Relevant bibliographies by topics / Flotation waste

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Academic literature on the topic 'Flotation waste'

Author: Grafiati
Published: 9 March 2023

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Journal articles on the topic "Flotation waste"

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Du, Yunpeng, Xiong Tong, Xian Xie, Wenjie Zhang, Hanxu Yang, and Qiang Song. "Recovery of Zinc and Silver from Zinc Acid-Leaching Residues with Reduction of Their Environmental Impact Using a Novel Water Leaching-Flotation Process." Minerals 11, no. 6 (May 31, 2021): 586. http://dx.doi.org/10.3390/min11060586.

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Zinc-leaching residue (ZLR) is a strongly acidic hazardous waste; it has poor stability, high heavy metal levels, and releases toxic elements into the environment. ZLR has potential as a valuable resource, because it contains elevated levels of zinc and silver. In this paper, the recovery of zinc (Zn) and silver (Ag) from ZLR wastes from zinc hydrometallurgy workshops using water leaching followed by flotation was studied. During water leaching experiments, the zinc and copper recovery rates were 38% and 61%, respectively. Thereafter, various flotation testing parameters were optimized and included grinding time, reagent dosages, pulp density, flotation time, and type of adjuster. Experimental results demonstrated this flotation method successfully recycled Ag and Zn. A froth product containing more than 9256.41 g/t Ag and 12.26% Zn was produced from the ZLR with approximately 80.32% Ag and 42.88% Zn recoveries. The toxicity characteristic leaching procedure (TCLP) results indicated the water-leaching flotation process not only recycled valuable metals such as zinc and silver in zinc-containing hazardous wastes but lowered the hazardous waste levels to those of general wastes and recycled wastes in an efficient, economical, and environmentally friendly way.
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Retka, Jacek, Grzegorz Rzepa, Tomasz Bajda, and Lukasz Drewniak. "The Use of Mining Waste Materials for the Treatment of Acid and Alkaline Mine Wastewater." Minerals 10, no. 12 (November 27, 2020): 1061. http://dx.doi.org/10.3390/min10121061.

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The mining of metal ores generates both liquid and solid wastes, which are increasingly important to manage. In this paper, an attempt was made to use waste rocks produced in the mining of zinc and lead to neutralizing acid mine drainage and alkaline flotation wastewater. Waste rock is a quartz-feldspar rock of hydrothermal origin. It is composed of, besides quartz and potassium feldspar (orthoclase), phyllosilicates (chlorite and mica), and sulfides (chiefly pyrite). To determine its physicochemical parameters and their variability, acid mine water and flotation wastewater were monitored for 12 months. Acid mine drainage (AMD) is characterized by a low pH (~3), high zinc concentration (~750 mg·L−1), and high sulfate content (~6800 mg·L−1). On the other hand, the determinations made for flotation wastewater showed, among others, a pH of approximately 12 and ca. 780 mg·L−1 of sulfates. AMD and flotation wastewater neutralization by the waste rock was shown to be possible and efficient. However, in both cases, the final solution contained elevated concentrations of metals and sulfates. Premixing AMD with alkaline flotation wastewater in the first step and then neutralizing the obtained mixture with the waste rock was considered the best solution. The produced solution had a circumneutral pH. However, the obtained solution does not meet the legislative requirements but could be further treated by, for example, passive treatment systems. It is noteworthy that the proposed approach is low cost and does not require any chemical reagents.
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TAKAHASHI, Hiromichi. "Waste-paper Recycling by Flotation." Journal of Japan Oil Chemists' Society 42, no. 10 (1993): 834–39. http://dx.doi.org/10.5650/jos1956.42.834.

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Karamanov, Alexander, Mirko Aloisi, and Mario Pelino. "Vitrification of copper flotation waste." Journal of Hazardous Materials 140, no. 1-2 (February 2007): 333–39. http://dx.doi.org/10.1016/j.jhazmat.2006.09.040.

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Yu, Hui Mei, Hua Jun Wang, and Ai Fei Yi. "Detection Study on the Mineral Processing Reagents Preparation from Catering Waste Oil and Application on Ore Flotation." Advanced Materials Research 699 (May 2013): 119–25. http://dx.doi.org/10.4028/www.scientific.net/amr.699.119.

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The composition of catering waste oil is similar to that of traditional materials for the preparation of fatty acid collectors, which makes it possible to change catering waste oil into fatty acid collector applied to ore flotation. The collectors which come from catering waste oil are detected by FTIR and GC-MS analyses. The FTIR date shows that collectors contains lively carboxyl functional groups and The GC-MS date reveals that those carboxyl functional groups exist in single unsaturated fatty acid and three unsaturated fatty acid. The collectors can be applied to iron ore reverse flotation, apatite flotation, and fluorite flotation. It has better flotation experiment results than the traditional collector that using in field production.
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Fečko, Peter, Alena Kašpárková, Eva Pertile, Vlastimil Kříž, Barbara Tora, Andrzej Jarosiński, and Iva Janáková. "Application of pyrolysis residue from waste materials in black coal flotation." Polish Journal of Chemical Technology 12, no. 2 (January 1, 2010): 62–66. http://dx.doi.org/10.2478/v10026-010-0020-3.

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Application of pyrolysis residue from waste materials in black coal flotation The paper deals with the verification of the floatability of pyrolytic oils, which were obtained through the pyrolysis of waste, namely mixed plastics, tyres and waste rubber in combination with black coal from Lazy Mine, and classical collector Montanol 551 in black coal flotation. Black coal from ČSA OKD, a.s. coal preparation plant was used for flotation tests. The results imply that it is possible to produce collectors from waste materials which may be applied in the flotation of black coal. Next, the paper focused on the identification of a suitable combination of pyrolytic oils and Montanol 551 in order to reach ash content in the concentrate below 10%.
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Abbastabardelavar, Mohammadreza, Amir Izadi, and Fereshte Asadiamiri. "Investigating Effects of Coal Flotation Waste on Aged Hot Mix Asphalt Performance." Civil Engineering Journal 4, no. 10 (October 30, 2018): 2491. http://dx.doi.org/10.28991/cej-03091175.

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The present study was an attempt to investigate the effect of fresh and old coal flotation waste (coal waste), used as asphalt filler and additive, on the properties of hot asphalt mixtures in aged and un-aged condition. In this experimental study, fresh and old coal flotation waste, obtained from the Central Alborz Coal Washing Plant, were used to produce filler specimens (100% Wt.) as substitutes for limestone powder and asphalt additive (7% w.t). Finally, the performance of the asphalt mixture containing flotation waste was evaluated using Marshall Stability and indirect tensile tests. The afore-mentioned compounds were used to produce specimens under short-term aging conditions and the results were compared with other results obtained under un-aged condition. The results indicate that flotation waste improved performance of hot mix asphalt under short-term aging conditions.
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Li, Rong Gang, Xiao Feng Xie, and Chuan Shan Zhao. "Study of Flotation Deinking of Old Magazine and Mixed Office Waste Paper." Advanced Materials Research 550-553 (July 2012): 3267–72. http://dx.doi.org/10.4028/www.scientific.net/amr.550-553.3267.

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The effect of flotation parameters such as flotation consistency, temperature, flotation time, air to pulp ratio, and velocity of pulp flow (turbulence level) on OMG/MOW deinking efficiency was studied by using a high-consistency laboratory pulper and a laboratory deinking cell. The optimized flotation conditions were: flotation consistency 1.1%, 40°C, 8min, air to pulp ratio 40%, velocity of pulp flow 3.5m/s and pH 9.0. By using the optimized flotation conditions, the deinked pulp brightness could reach 70.56%ISO, 11.78%ISO higher than that of the control, the effective residual ink concentration was 108.46 mg/kg, which less than 378.14mg/kg of the control, theoretic deinking efficiency was up to 88.41%.
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Çoruh, Semra, Sermin Elevli, and Feza Geyikçi. "Statistical Evaluation and Optimization of Factors Affecting the Leaching Performance of Copper Flotation Waste." Scientific World Journal 2012 (2012): 1–8. http://dx.doi.org/10.1100/2012/758719.

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Copper flotation waste is an industrial by-product material produced from the process of manufacturing copper. The main concern with respect to landfilling of copper flotation waste is the release of elements (e.g., salts and heavy metals) when in contact with water, that is, leaching. Copper flotation waste generally contains a significant amount of Cu together with trace elements of other toxic metals, such as Zn, Co, and Pb. The release of heavy metals into the environment has resulted in a number of environmental problems. The aim of this study is to investigate the leaching characteristics of copper flotation waste by use of the Box-Behnken experimental design approach. In order to obtain the optimized condition of leachability, a second-order model was examined. The best leaching conditions achieved were as follows: pH = 9, stirring time = 5 min, and temperature = 41.5°C.
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Milosavljevic, Milutin, Dusan Mijin, Sandra Konstantinovic, Natasa Elezovic, Ljiljana Takic, and Ljubinka Drazevic. "A new procedure for the treatment of an industrial waste containing flotation reagents." Chemical Industry 68, no. 3 (2014): 331–39. http://dx.doi.org/10.2298/hemind130618059m.

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Flotation reagents can be transformed to industrial waste if they are stored for a long period of time. Also, if synthesis or drying process is not performed under defined conditions in industrial plants, which produce flotation reagents, batch of waste may arise and be stored as a waste. The chemical composition of this waste depends on the phase in which it was created, but typically includes: unreacted alkali hydroxide, solvent - alcohol and trithiocarbonate and oxidation product - dixanthogenate. In this paper a new laboratory procedure for the treatment of such wastes is described. The identification and separation of industrial waste components is also included. From the separated dixantogenate and xanthate a laboratory synthesis of thioncarbamates is given. In addition, a semi-industrial treatment of waste xanthate is presented. Synthesis of N-alkyl and N,N-dialkyl-O-isobutylthioncarbamates were obtained from the filtrate obtained in the first step. As a by-product, sodium thioglycolate was produced. This by-product is transformed to a thioglycolic acid by the addition of an acid. Also, the synthesis of thioncarbamates from dixanthogenates, isolated from industrial waste as a cake, is desribed. Described waste treatment is additionally interesting due to the production of sulphur as another by-product. Laboratory synthesis gave thioncarbamates in yields from 69.7 to 87.7 %, while the semi-industrial process for the selected batches produced thioncarbamates in yields from 74.2 to 80.5 %. Taking into account the importance of the synthesized compounds as selective flotation reagents, a new procedure of their synthesis from industrial waste is characterized by good yields and purity of the obtained compounds, the simplicity of process, low environmental impact and short reaction times of synthesis.
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Dissertations / Theses on the topic "Flotation waste"

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Schmidt, Dale C. "Flotation deinking of toner-printed papers /." Thesis, Connect to this title online; UW restricted, 1996. http://hdl.handle.net/1773/9828.

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Emerson, Zachery Ian. "Particle and bubble interactions in flotation systems." Auburn, Ala., 2007. http://repo.lib.auburn.edu/2007%20Spring%20Dissertations/EMERSON_ZACHERY_45.pdf.

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Ajersch, Michael. "Mechanisms of pulp loss in flotation deinking /." *McMaster only, 1997.

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Siame, Edward. "Recovery of lithium from china clay waste using a combination of froth flotation, magnetic separation, roasting and leaching." Thesis, University of Exeter, 2011. http://hdl.handle.net/10036/3096.

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This study was aimed at recovering lithium from china clay waste using a combination of froth flotation, magnetic separation, roasting and leaching. The china clay waste produced by Goonvean Ltd contains about 0.84% Li2O and 0.36% Rb2O, present in some of the mica minerals. Among the mica minerals, zinnwaldite is the major source of lithium with smaller amounts being contributed by muscovite. The results of the flotation tests showed that the dodecylamine collector dosage had a greater effect on the recovery and grade of mica minerals to concentrate than pH over the range tested. It was found that a mica concentrate containing 1.45% Li2O, 0.55% Rb2O and 4.47% Fe2O3 could be produced at a recovery of 98.6%, 85.2% and 92.8% respectively. Mineralogical analysis of the flotation products showed that the concentrate consisted mainly of muscovite, zinnwaldite and kaolinite with minor amounts of K-feldspar and quartz. The tailing consisted of mainly quartz, K-feldspar and kaolinite with minor amounts of apatite, topaz, zinnwaldite and muscovite. Further upgrading of the concentrate was found to be possible using a wet high intensity magnetic separator producing a magnetic fraction containing 2.07% Li2O, 0.74% Rb2O and 7.42% Fe2O3 with a recovery of 73%, 67% and 77% respectively. A mineralogical analysis of the separation products showed that the magnetic fraction consisted of predominantly zinnwaldite with muscovite as the main contaminant. The non-magnetic fraction consisted of muscovite and kaolinite as the main minerals while zinnwaldite, K-feldspar and quartz were subordinate. Electron-microprobe analysis on individual mica grains have shown that zinnwaldite and muscovite contain on average a calculated Li2O content of 3.88% and 0.13% respectively. Lithium extraction from the concentrate is only possible after the lithium has been converted into a water-soluble compound. Thus, in order to convert the lithium in concentrate into a water-soluble compound, the gypsum and limestone lithium extraction methods together with the new method of using sodium sulphate were investigated. The process involved roasting a predetermined amount of lithium-mica concentrate with either gypsum, limestone or sodium sulphate at various temperatures and subsequently leaching the pulverised materials in water at 85oC. A lithium extraction efficiency of about 84% was obtained using gypsum at 1050oC while rubidium extraction was very low at 14%. It was found possible to extract about 97% Li and 16% Rb if the concentrate was roasted with sodium sulphate at 850oC. Processing the concentrate with limestone resulted in very low lithium extraction. Iron co-extraction was low in all cases. The XRD analysis of the gypsum and sodium sulphate roast-products showed that the water soluble lithium species were KLiSO4 and Li2KNa(SO4)2 respectively. Preliminary tests on the leach solution obtained by using sodium sulphate as an additive have shown that a Li2O3 product with a purity of > 90% could be produced by precipitation with sodium carbonate although more work is required to reach the industrial target of > 99%. The lithium carbonate obtained with Li2CO3 content of about 90% is still suitable for use in the glass and ceramic industries, and as feedstock for the production of high-purity lithium compounds. An economic evaluation of the proposed lithium carbonate production plant has indicated an annual rate of return on the investment before tax of 7.2%.
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Huang, Ying. "Removal of Organohalogen Compounds from Municipal Solid Waste Incineration Fly Ash by Column Flotation." 京都大学 (Kyoto University), 2003. http://hdl.handle.net/2433/148541.

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Hogan, David E., and David E. Hogan. "Biosurfactant (Monorhamnolipid) Complexation of Metals and Applications for Aqueous Metalliferous Waste Remediation." Diss., The University of Arizona, 2016. http://hdl.handle.net/10150/623071.

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Biosurfactants are compounds that exhibit surface activity (e.g., reduce surface and interfacial tension) and are derived from natural, biological sources. They are considered green substances due to their natural derivation, biodegradability, and relatively low toxicity. Biosurfactants from multiple classes have been shown to interact with metals, and a review of these interactions is provided. Rhamnolipids produced by Pseudomonas aeruginosa are attracting attention for metal remediation applications. The purpose of this dissertation is to evaluate rhamnolipids' ability to complex rare earth elements, determine the environmental compatibility of novel rhamnolipid diastereomers, and assess the efficacy of rhamnolipid as a collector in ion flotation. Previous research shows rhamnolipids selectively bind elements of environmental concern over common soil and water cations, but there had been no examination of transition metals from the f-block of the periodic table. The f-block elements include the rare earth elements, which are a vital component of nearly every modern technology and subject to supply risk. The interaction between monorhamnolipids and the rare earth elements was investigated by determining conditional stability constants using a resin-based ion exchange method. For the 27 metals examined, the conditional stability constants could be divided into three groups, albeit somewhat subjectively: weakly, moderately, and strongly bound. UO22+, Eu3+, Nd3+, Tb3+, Dy3+, La3+, Cu2+, Al3+, Pb2+, Y3+, Pr3+, and Lu3+are strongly bound with conditional stability constants ranging from 9.82 to 8.20; Cd2+, In3+, Zn2+, Fe3+, Hg2+, and Ca2+ are moderately bound with stability constants ranging from 7.17 to 4.10; and Sr2+, Co2+, Ni2+, UO22+, Cs+, Ba2+, Mn2+, Mg2+, Rb+, and K+ are weakly bound with stability constants ranging from 3.95 to 0.96. The uranyl ion is reported twice due to the ion demonstrating two distinct binding regions. The conditional stability constants were demonstrated to be an effective predictor of metal removal order. The metal parameters of enthalpy of hydration and ionic charge to radius ratio were shown to be determinants of complexation strength. Naturally produced rhamnolipids are a mixture of congeners. Synthetic rhamnolipid synthesis has recently enabled production of four monorhamnolipid diastereomers of a single congener. The biodegradability, acute toxicity (Microtox assay), embryo toxicity (Zebrafish assay), and metal binding capacity of the diastereomers was investigated and compared to natural monorhamnolipid. Biodegradability testing showed all the diastereomers were inherently biodegradable. By the Microtox assay, all of the monorhamnolipids were categorized as slightly toxic by Environmental Protection Agency ecotoxicity categories. Out of 22 parameters tested, the zebrafish toxicity assay showed only diastereomer toxicity for the mortality parameter, except for diastereomer R,R which showed no toxic effects. All the monorhamnolipids interacted with both Cd2+ and Pb2+. Ion flotation is one possible technology for metal recovery and remediation of metal contaminated waters. Ion flotation utilizes charged surfactants to collect and concentrate non-surface active ions at the surface of an aerated solution. Rhamnolipid's suitability as a collector in ion flotation was investigated. A flotation column was designed to test monorhamnolipid efficacy as a collector. Monorhamnolipids form foams and effectively remove Cs+, Cd2+, and La3+ from solution. The efficacy of the flotation process relies on the collector:colligend ratio and valency of the colligend. Flotation of metal solutions showed a removal order of Cd2+>La3+>>Cs+ when the metals were present individually and mixed at equimolar concentrations. When mixed at order of magnitude different concentrations, the flotation order was Cd2+>>Cs+>>La3+. These studies show rhamnolipid has potential to be used for environmentally-compatible metal recovery and metalliferous water remediation, especially for the rare earth elements.
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Shemi, Akpojotor. "Flexographic deinking with electric field technology by destabilization and flotation." Diss., Atlanta, Ga. : Georgia Institute of Technology, 2008. http://hdl.handle.net/1853/24666.

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Thesis (Ph.D.)--Chemical Engineering, Georgia Institute of Technology, 2009.
Committee Chair: Hsieh, Jeffery; Committee Member: Breedveld, Victor; Committee Member: Empie, Jeff; Committee Member: Forney, Larry; Committee Member: Singh, Preet
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Fundikwa, Bridget. "Environmental Performance Assessment of Froth Flotation for Coal Recovery and Sulfur Removal from Ultrafine Coal Waste." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/21191.

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The South African coal mining industry generates large volumes of coal ultrafine waste (< 150 microns) each year, with a significant amount being dumped in tailing slurry dams. These slurry dams have been associated with prolonged pollution and loss of valuable resources. In the two stage flotation process developed at the University of Cape Town, froth flotation is used to both recover coal (stage 1) and remove pyritic sulfur (stage 2) from ultrafine coal waste, resulting in three outputs streams: a saleable coal product, a small volume sulfide-rich stream, and a reduced volume sulfide lean tailings stream. Pre-disposal removal of sulfide sulfur and coal recovery by means of froth flotation is aimed at effectively removing the acid rock drainage (ARD) risk associated with sulfide bearing waste s and at recovering valuable resources respectively. Previous studies have demonstrated the technical feasibility of this process for a number of coal waste types on a laboratory-scale, with results indicating that it is possible to recover large quantities of useable coal whilst generating a tailings waste stream with a reduced sulfur content and negligible ARD risk. An order of magnitude financial model for a fictitious plant has also been developed, and applied to demonstrate the economic viability for s elected case studies. To date, however, studies on the environmental viability of the process have only focused on the ARD mitigating potential of the two-stage flotation process and little attention has been given to the systemic environmental implication s of the process such as the energy and reagent usage. The research study therefore aims to evaluate the environmental burdens and benefits of the two-stage flotation process, particularly from a South African context, and to compare the environmental performance to the conventional disposal of untreated coal ultrafines. Furthermore, this project aims to establish which stages along the process contribute the most to the environmental burdens of the process and how the variations of the input parameters affect the overall environmental performance of the proposed process. To this end, a life cycle inventory of inputs and outputs was compiled on the basis of the empirical results derived from a previous laboratory-scale case study conducted on a sample of an acid generating ultrafine coal waste from the Waterberg region. Experimental results from the case study, which entailed two-stage flotation (using Naflote 9858 as a coal collector and xanthate (SIBX) as a sulfide collector in stages 1 and 2), and detailed characterisation of the feed and desulfurised tailings, was supplemented with literature information and data from mass and energy balance calculations for a fictitious plant. An environmental impact analysis was subsequently conducted using a combination of Life Cycle Impact Assessment and risk-based impact assessment techniques and criteria. The impact categories selected included climate change, terrestrial acidification, fossil fuel depletion, natural land transformation, aquatic water pollution risk, drinking water quality risk, aqueous acidification, salinity and consumptive water footprint. Aquatic water pollution risk, drinking water quality risk and aqueous acidification impact indicators were calculated by summing up risk potential factors for the constituents of the final disposed waste streams. The rest of the impact categories were calculated by multiplying the inventory result with a characterisation factor developed from impact assessment models The case study results indicated that the simple mentation of the two-stage flotation process results in a notable decrease in eco-toxicity, salinity, consumptive water footprint, metal toxicity, aqueous acidification, fossil fuel depletion and natural land transformation impacts. However, the results al so indicated an increase in atmospheric related impacts (climate change and terrestrial acidification impacts), which has been attributed to the additional energy consumption associated with the two-stage flotation process and the production processes associated with the flotation reagents. Analyses of the process contributions to the individual impact categories for the two-stage flotation process revealed the climate change and terrestrial acidification impact categories to be dominated by the electricity production process and the flotation reagents production process. The sensitivity analyses revealed a higher dependence of the fossil fuel depletion impact category on the percentage coal yield than the electricity consumption of the foreground process. Furthermore the sensitivity analyses indicated a strong dependence of the climate change and terrestrial acidification impacts on the electricity consumption and the SIBX dosage in the foreground process. In the South African context, implementation the two-stage flotation process would result in a significant recovery of coal (approximately 1.2 million tonnes for every 4 million tonnes dry coal ultrafines lost per annum) and a sulfide-rich product which can be utilised for electricity production and sulfuric acid production respectively, hence promoting resource efficiency. Although higher than in the case of conventional land disposal, the energy used in the two-stage flotation process is infinitesimal compared to the energy recovered in the process through the generation of additional coal, and results in only a 0.025 % increase in the annual greenhouse gas emissions. The implementation of the two-stage flotation would also result in reduced water losses in comparison to conventional land disposal, which is beneficial in the South African context as South Africa is a water scarce region. Lastly whilst the implementation of the two-stage flotation process would result in the reduction of water related impacts associated with acidification, salinization and metal pollution, it might pose a further threat to aquatic life if the xanthate salt reagents are emitted to local water sources. The limitations of the study were mainly associated with the quality of the input and output data, the impact categories and the system boundary and scenario development. The multiple sources of information and the variations in literature of the energy input estimates were noted as a source of uncertainty. The lack of characterisation factors for some of the substances in the system as well as the exclusion of the possibility of utilization of the sulfide-lean stream were also part of the limitations associated with the study. Recommendations for future work include improving the environmental assessment by incorporating various case studies and by incorporating downstream processing as well as optimizing the two-stage flotation process by using less energy and by using less toxic flotation reagents.
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Mukandi, Melody. "Modelling of a bioflocculant supported dissolved air flotation system for fats oil and grease laden wastewater pretreatment." Thesis, Cape Peninsula University of Technology, 2017. http://hdl.handle.net/20.500.11838/2637.

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Thesis (MTech (Chemical Engineering))--Cape Peninsula University of Technology, 2017.
In the recent past, the poultry industry in South Africa has grown due to an increased demand of poultry products as a result of population growth and improved living standards. Furthermore, this has led to poultry slaughterhouses generating high strength wastewater which is laden with a high concentration of organic and inorganic pollutants from the slaughtering process and sanitation of equipment and facilities. As a result, South Africa has promulgated restrictions and a set of quality standards for effluent discharged into the environment to minimize ecological degradation and human health impact. Hence, there is a need for improved Poultry Slaughterhouse Wastewater (PSW) pre-treatment prior to either discharge into municipal wastewater treatment plants (WWTP) or on-site secondary treatment processes such as anaerobic digesters. Additionally, amongst the pre-treatment methods for Fats, Oil and Grease (FOG) laden wastewater, flotation remains the most popular with Dissolved Air Flotation (DAF) system being the most applied. However, modelling and optimization of a biological DAF system has never been attempted before in particular for a bioflocculant supported DAF (BioDAF) for PSW pre-treatment. Process modelling and optimization involves process adjustment to optimize influential parameters. In this study, Response Surface Methodology (RSM) was used to develop an empirical model of a BioDAF for pre-treatment of PSW, for which a bioflocculant producer including production conditions, flocculant type and its floc formation mechanism, were identified. Twenty-one (n = 21) microbial strains were isolated from the PSW and their flocculation activity using kaolin clay suspension (4g/L) was quantified, with a mutated Escherichia coli (mE.coli) [accession number LT906474.1], having the highest flocculation activity even in limited nutrient conditions; hence, it was used for further analysis in other experiments. Furthermore, the optimum conditions for bioflocculant production achieved using RSM were pH of 6.5 and 36°C conditions which induced instantaneous bioflocculant production with the highest flocculation activity. The bioflocculant produced by the mE.coli showed the presence of carboxyl/amine, alkyne and hydroxyl functional groups, which was indicative that the bioflocculant contained both polysaccharides and some amino acids.
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Chockalingam, Evvie. "Studies On Biodegradation Of Organic Flotation Collectors Using Bacillus polymyxa." Thesis, Indian Institute of Science, 2000. http://hdl.handle.net/2005/184.

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Numerous organic reagents of diverse structural composition are employed in the froth flotation process for the beneficiation of non-metallic and sulphide ores. Alkyl xanthates are used as collectors for sulphide ores while amines and fatty acids are used for non-metallic ore beneficiation. Although these collector reagents react preferentially with the concerned minerals in the treated ore pulp, excess and unreacted concentration of these organic collectors end up in the mill process effluents. It has been known that even small concentrations of these organic reagents in water streams are toxic to water life, besides their deleterious influence on end stream processes during recycling. Bioremediation has long been recognised as an inexpensive, flexible and environmentally benign technique for waste water treatment. These organic flotation reagents are amenable to biological degradation. The major objective of this work is the degradation of solubilized collector reagents from aqueous solutions using a microbial technique. Bacillus polymyxa, a Gram-positive, neutrophilic, periflagellated heterotroph that occurs indigenously in soils and certain mineral deposits has been used in the bioremediation studies. Organic flotation reagents namely, dodecyl ammonium acetate (DAA), which is used as a collector for oxides and silicates, sodium isopropylxanthate which finds application in sulphide flotation and sodium oleate, mainly used for oxide and salt-type minerals, have been chosen for the degradation studies. Pure minerals of galena, pyrite, magnetite, quartz and calcite have been typically selected for these investigations. The growth of Bacillus polymyxa in the presence of these organic reagents at different concentrations has been assessed and the degradation of these reagents monitored. Attempts have been made to grow the bacterium in the presence of the organic reagents, both in the absence and presence of sucrose, by adaptation technique. Electrokinetic studies on the chosen minerals namely, galena, pyrite, quartz, calcite and magnetite have been carried out both in the presence of the organic reagents and Bacillus polymyxa cells or metabolite. Biological stripping of the adsorbed collector reagents from the mineral surfaces have been examined through FTIR spectroscopy. The progress of bioremoval of the organic reagents along with the generation of newer reaction products has also been monitored through uv-visible spectroscopic technique. The results of this study highlight that Bacillus polymyxa and its metabolic products bring about the degradation of the chosen organic flotation collectors. Further, the bacteria are able to utilise the collector reagents as carbon source for their growth, in the absence of added organic carbon (sucrose). Electrokinetic studies and examination by FTIR spectroscopy reveal that consequent to interaction with Bacillus polymyxa, significant surface modification on the mineral takes place. Probable mechanisms in the biodegradation processes are illustrated. Biological metabolic products responsible for bringing about the bio-deterioration have been analysed and characterised.
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Books on the topic "Flotation waste"

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W, Smith C. Flotation of silicon carbide from waste sludges. Pittsburgh, Pa: U.S. Dept. of the Interior, Bureau of Mines, 1987.

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Shiao, S. Y. Physical cleaning of waste coal by dissolved-CO2 flotation. S.l: s.n, 1993.

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Watson, Jeffrey A. Deinking recycled paper using column flotation: Jeffrey A. Watson. [s.l: s.n.]., 1996.

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Hardie, Colin Alexander. In-plant comparison of internal and external spargers for flotation column deinking. Montréal, Qué: [s.n.]., 1998.

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Fečko, Peter. Netradiční způsoby úpravy černouhelných kalů. 2nd ed. Ostrava: Vysoká škola báňská-Technická univerzita Ostrava, 2001.

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Ehrlinger, F. Fine coal flotation of plant waste: An in-plant comparison column vs. sub-a-cells-reagent testing. S.l: s.n, 1992.

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Shen, Jie. Effect of process water on flotation deinking: A survey of the influence of common mill process water contaminants on laboratory flotation deinking performance. 1996.

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Rogers, Robert Murray. Water quality attributes that impact flotation deinking performance. 1993.

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Williams, Jonathan A. Effect of process water system closure on the flotation deinking efficiency of newsprint. 1996.

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Edzwald, James K. Impacts of Filter Backwash Recycle on Clarification and Filtration. Amer Water Works Assn, 2001.

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Book chapters on the topic "Flotation waste"

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Shammas, Nazih K., Jacek P. Wasowski, Lawrence K. Wang, and William A. Selke. "Pretreatment of Meat-Processing Waste." In Flotation Technology, 503–65. Totowa, NJ: Humana Press, 2010. http://dx.doi.org/10.1007/978-1-60327-133-2_16.

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Zouboulis, A. I., K. A. Matis, and G. A. Stalidis. "Flotation Techniques in Waste Water Treatment." In Innovations in Flotation Technology, 475–97. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2658-8_25.

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Dobias, B., W. Klar, and K. Schwinger. "Flotation of Pigments and Inks from Waste Paper." In Innovations in Flotation Technology, 499–511. Dordrecht: Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2658-8_26.

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Yefremova, S., L. Bunchuk, Yu Sukharnikov, E. Li, A. Niyazov, S. Shalgimbayev, Yu Hain, and A. Zharmenov. "Universal Flotation Reagent Produced from Plant Waste." In Proceedings of the 18th Symposium on Environmental Issues and Waste Management in Energy and Mineral Production, 163–67. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99903-6_14.

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Kamberi, B., A. Ibar, I. Ahmet, and O. Ibar. "The Chemical Contents of Alkaline Wastewater From the Selective Flotation of Pb-Zn Ores and Its Use." In Appropriate Waste Management for Developing Countries, 417–24. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2457-7_30.

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Sai Kumar, M., K. Rashid Sulthan, N. Vasumathi, Ajita Kumari, and T. V. Vijaya Kumar. "Flotation of Low-Grade Graphite Ore Using Collector Derived from Low-Density Polyethylene Waste." In Lecture Notes in Mechanical Engineering, 213–24. Singapore: Springer Nature Singapore, 2022. http://dx.doi.org/10.1007/978-981-19-7264-5_16.

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Tarasov, A. V., and A. D. Besser. "Waste-Less Technology for Processing of Subgrade Lead Concentrates and Flotation Middlings Containing Precious Metals." In Recycling of Metals and Engineercd Materials, 117–22. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118788073.ch10.

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Kou, Lulu, Wenjuan Wang, Yanfang Huang, and Guihong Han. "Study on the Application of Absorbing Colloid Flotation for Phosphate Removal from the Hydrometallurgy Waste Liquid." In The Minerals, Metals & Materials Series, 467–72. Cham: Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-22765-3_41.

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Utimura, S. K., J. A. S. Tenório, and D. C. R. Espinosa. "The Effect of Ethanol Concentration for the Separation of ABS and HIPS from Waste Electrical and Electronic Equipment (WEEE) by Flotation Technique." In EPD Congress 2014, 173–80. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2014. http://dx.doi.org/10.1002/9781118889664.ch21.

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Palaniandy, Puganeshwary, Hj Adlan, Hamidi Aziz, Mohamad Murshed, and Yung Hung. "5 Dissolved Air Flotation (DAF) for Wastewater Treatment." In Advances in Industrial and Hazardous Wastes Treatment, 145–82. 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487–2742: CRC Press, 2017. http://dx.doi.org/10.1201/9781315164199-6.

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Conference papers on the topic "Flotation waste"

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Stokfisz, Anna. "FLOTATION WASTE MANAGEMENT." In 15th International Multidisciplinary Scientific GeoConference SGEM2015. Stef92 Technology, 2011. http://dx.doi.org/10.5593/sgem2015/b51/s20.048.

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Semushkina, L. V., and S. M. Narbekova. "On the possibility of flotation processing of technogenic gold-containing waste from enrichment plants." In Challenges of Science. Institute of Metallurgy and Ore Beneficiation, Satbayev University, 2021. http://dx.doi.org/10.31643/2021.06.

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The aim of the work is the flotation processing of gold-containing tailings using composite flotation (CF) agents. According to the results of chemical analysis, the studied tailings sample contains 0.39 g/t gold. The main part of the initial tailings sample is represented by rock-forming minerals such as quartz, clinochlore, microcline, tremolite, albite, calcite, and muscovite. According to the results of the rational analysis, 39.50% of gold is in the hard-to-recover form with quartz; 28.87% is in the form of fine-grained gold; 31.63% is in intergrowths with sulfides and rocks. The optimum reagent scheme of flotation processing of tailings was chosen: degree of regrinding of 95% of grade -0,074 mm, consumption of sodium butyl xanthate of 100 g/t, consumption of foaming agent T-92 of 30 g/t. Under the chosen reagent scheme the gold-containing concentrate containing 6,4 g/t gold at the recovery of 49,68% was obtained. Preliminary regrinding of tailings allows to increase the gold recovery in the blanks concentrates by 27.96%. The reagent scheme of flotation of gold-containing tailings with the application of composite flotation (CF) agent was tested. A composition of sodium butyl xanthate and reaeflot was used as a composite flotation reagent for the improvement of gold extraction from flotation tailings. Application of composite flotation (CF) agent pre-treated on the dispersant increases gold recovery into gold-containing concentrate by 4.65%, in comparison with the basic collector sodium butyl xanthogenate. Consumption of flotation agent CF is reduced by 20%.
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Weng, Xiaoqing, Guangjun Mei, Yong Li, Jie Zong, and Hongqiang Li. "Notice of Retraction: Preparation of Flotation Reagent from Waste Cooking Oil." In 2011 5th International Conference on Bioinformatics and Biomedical Engineering. IEEE, 2011. http://dx.doi.org/10.1109/icbbe.2011.5781061.

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Cablik, Vladimir. "UTILIZATION OF LIQUID PRODUCTS FROM PYROLYSIS OF WASTE MATERIALS IN COAL FLOTATION." In 14th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING. Stef92 Technology, 2014. http://dx.doi.org/10.5593/sgem2014/b13/s4.129.

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Landecka, Aneta. "THE EXTRACTION OF AG�CONCENTRATE FROM THE WASTE MATERIAL BY MEANS OF FLOTATION." In 17th International Multidisciplinary Scientific GeoConference SGEM2017. Stef92 Technology, 2017. http://dx.doi.org/10.5593/sgem2017/11/s04.140.

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Kondratenko, A. S., S. L. Buyantuev, S. Yu Shishulkin, and I. V. Starinsky. "Electroplasmic processing of coal flotation waste into organo-mineral sorbents for wastewater treatment." In PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON ADVANCES AND APPLICATIONS IN PLASMA PHYSICS (AAPP 2019). AIP Publishing, 2019. http://dx.doi.org/10.1063/1.5135484.

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Artemev, Alexandr, Elena Veselova, Irina Nikitina, and Galina Viktorovna. "RECOVERY OF NEPHELINE FROM APATITE FLOTATION TAILINGS OF APATITE-NEPHELINE COMPLEX MINERAL COMPOSED ORES." In GEOLINKS Conference Proceedings. Saima Consult Ltd, 2021. http://dx.doi.org/10.32008/geolinks2021/b2/v3/19.

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"The recovery of all possible useful components from ores corresponds to modern approach to the mineral raw materials processing and provides a reduction in the amount of waste sent to tailings dumps. The increasing complexity of the mineral composition of the ore leads to the fact that the existing beneficiation methods and regimes do not provide the necessary quality of the obtained concentrates. This study shows the peculiarities of nepheline recovery from apatite flotation tailings of apatite-nepheline ores with low nepheline fraction. Two reagent regimes were tested for nepheline reverse flotation: a mixture of pine and foliate tall oil, a mixture of tall oil and polyalkylbenzene sulfonic acid, which previously showed high selectivity of separation of nepheline and dark-coloured minerals. On the studied apatite-nepheline ore samples the necessary selection of flotation separation was not observed. Mineralogical analysis shows that losses of nepheline with froth products occur both at the expense of nepheline in intergrowths with associated minerals and at the expense of liberated minerals. Nepheline is quite actively floated, which is associated with a change in the surface properties of the mineral. The quality of flotation nepheline concentrates is reduced due to liberated grains of amphiboles, pyroxenes, and mica. The high content of feldspar in the ore, which during flotation predominantly remains in the chamber product, also affects the quality of the nepheline concentrate. It was possible to increase the Al2O3 content in the concentrate to the required values only after magnetic separation in a strong field."
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Zavada, Jaroslav. "VERIFICATION OF THE POSSIBILITY OF EXTRACTING SILVER CONCENTRATE FROM WASTE AFTER PROCESSING SILVER ORE BY FLOTATION." In 13th SGEM GeoConference on SCIENCE AND TECHNOLOGIES IN GEOLOGY, EXPLORATION AND MINING. Stef92 Technology, 2013. http://dx.doi.org/10.5593/sgem2013/ba1.v2/s04.019.

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Endsley, Stephen L. "Saxton Nuclear Experimental Corporation, Containment Vessel (CV) Concrete Removal: Decommissioning in a Flood Plan." In ASME 2003 9th International Conference on Radioactive Waste Management and Environmental Remediation. ASMEDC, 2003. http://dx.doi.org/10.1115/icem2003-4685.

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The Saxton Nuclear Experimental Corporation (SNEC) constructed and operated a nuclear reactor in rural Pennsylvania as an early demonstration project. The 23.5 MWth pressurized water reactor (PWR) operated from 1962 through 1972, and completed operations with failed fuel experiments. The facility was placed into SAFSTOR and decommissioning activities began in the mid 1990’s. The reactor facility was sited on the banks of a Pennsylvania river within the immediate one hundred year floodplain. Because of the elevated groundwater levels at the site, completion of the decommissioning process would prove to be challenging. The containment was constructed as a vertical steel cylinder of 11/16” (1.75 cm) thick carbon steel, one hundred and nine feet (33 meters) tall with a diameter of fifty feet (15.25 meters). The bottom of the containment vessel was torispherical steel located approximately fifty feet below grade in the flood plain of Central Pennsylvania’s Juniata River. Construction of the vessel included an internal concrete structure that was designed as the ballast to prevent flotation of the vessel, and provided mechanical structure for the reactor and equipment installation. The steel cylinder provided the forms for the internal concrete installation. The initial phase of decommissioning for the reactor containment consisted of the complete removal of the reactor and associated components, and was completed in the late 1990’s without regard to stabilization requirements required to maintain the stability of containment. Due to concerns of possible radioactive material between the concrete structure and the steel shell, it was decided that the internal concrete would be removed. Removal of the concrete constituted removal of the ballast material and possibly degraded the structural integrity of the CV. Therefore, stabilization of the steel cylinder was required to prevent uplift (flotation) and/or deformation of the steel shell. This stabilization required the installation of a bedrock anchoring system, internal and external anti-buckling steel beam stiffener rings, and a complete site dewatering system. TLG Services completed concrete removal in October of 2002, and this paper will provide information and details of the complex concrete removal project, project challenges, and lessons learned.
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Sottnik, Peter, Tomas Farago, Ondrej Brachtyr, and Jaroslav Vozar. "ABANDONED LOCATIONS AFTER MINERAL EXPLORATION - ENVIRONMENTAL BURDEN OR PERSPECTIVE SOURCES OF RAW MATERIALS?" In 22nd SGEM International Multidisciplinary Scientific GeoConference 2022. STEF92 Technology, 2022. http://dx.doi.org/10.5593/sgem2022/1.1/s03.022.

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Mining wastes represent a specific type of waste and, like sites after mining, represent sites where a comprehensive assessment of pollution at these sites needs to be approached, taking into account various specific conditions. Subsequently, the design of the remediation technologies used at a specific location must also be adapted to this fact. Until now, mining waste facilities (heaps and sludge ponds) have been treated as environmental burdens. However, it should be borne in mind that abandoned extractive waste facilities may be a significant source of minerals in the future, due to improved treatment technologies and combined with new requirements in the raw materials market (requirements for new useful components that have not been mined in the past). Many extractive waste facilities also contain elements that are currently listed as critical raw materials for the European Union. Within the project APVV-17-0317 "Antimony - a critical element and a dangerous contaminant affecting biodiversity in mining sites" a preliminary survey and research was carried out at selected sites in order to determine the potential of deposited materials as secondary sources of minerals. Samples of flotation sludge used in our research were taken at the localities of Dubrava, Medzibrod and Cucma from tailing ponds after the extraction of antimony, which is one of the critical raw materials for the EU.
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Reports on the topic "Flotation waste"

1

Ehrlinger, H. P. III. Fine coal flotation plant waste comparison--column vs. sub-a cells. Office of Scientific and Technical Information (OSTI), January 1991. http://dx.doi.org/10.2172/6042322.

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Groppo, J. G. Recovery of fine coal from waste streams using advanced column flotation. Office of Scientific and Technical Information (OSTI), January 1991. http://dx.doi.org/10.2172/6086292.

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Groppo, J. G. Recovery of fine coal from waste streams using advanced column flotation. Annual report, September 1, 1990--August 31, 1991. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/10106332.

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Ehrlinger, H. P. III. Fine coal flotation plant waste comparison--column vs. sub-a cells. Final technical report, September 1, 1990--August 31, 1991. Office of Scientific and Technical Information (OSTI), December 1991. http://dx.doi.org/10.2172/10107310.

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Shiao, S. Y. Physical cleaning of waste coal by dissolved-CO{sub 2} flotation. Final technical report, September 1, 1992--August 31, 1993. Office of Scientific and Technical Information (OSTI), December 1993. http://dx.doi.org/10.2172/10132412.

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Shiao, S. Y. Removal of pyrite and trace elements from waste coal by dissolved- CO{sub 2} flotation and chelating agents. Technical report, September 1, 1993--November 30, 1993. Office of Scientific and Technical Information (OSTI), December 1993. http://dx.doi.org/10.2172/10134283.

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Shiao, S. Y., and K. Ho. Removal of pyrite and trace elements from waste coal by dissolved-CO{sub 2} flotation and chelating agents. Final technical report, September 1, 1993--August 31, 1994. Office of Scientific and Technical Information (OSTI), December 1994. http://dx.doi.org/10.2172/10115131.

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Shiao, S. Y. Removal of pyrite and trace elements from waste coal by dissolved-CO{sub 2} flotation and chelating agents. [Quarterly] technical report, December 1, 1993--February 28, 1994. Office of Scientific and Technical Information (OSTI), August 1994. http://dx.doi.org/10.2172/10170912.

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