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Artículos de revistas sobre el tema "Froth recovery"

Autor: Grafiati

Publicado: 4 de junio de 2021

Última modificación: 30 de enero de 2023

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1

Martinez, Jose, Miguel Maldonado, and Leopoldo Gutierrez. "A Method to Predict Water Recovery Rate in the Collection and Froth Zone of Flotation Systems." Minerals 10, no. 7 (July 16, 2020): 630. http://dx.doi.org/10.3390/min10070630.

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This paper describes a method to predict water recovery rate into and through the foam in a bubble column operating under different gas rates, froth depths, and frother types and concentrations. Three frothers were considered: Metil Isobutil Carbinol (MIBC), a proprietary blend of alcohols, aldehydes, and esters commercialized under the name PINNACLE® 9891, and a PGE-based Dow Froth 1012 (DF1012). The water rate entering into the froth (foam) layer from the bubbly (collection) zone was estimated as the water rate overflowing the column when operating at a thin stable foam layer, i.e., 0.5 cm.

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2

Ostadrahimi, Mahdi, Saeed Farrokhpay, Khodakaram Gharibi, and Ali Dehghani. "Effects of Operating Parameters on the Froth and Collection Zone Recovery in Flotation: An Industrial Case Study in a 10 m3 Cell." Minerals 11, no. 5 (May 7, 2021): 494. http://dx.doi.org/10.3390/min11050494.

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The effects of flotation operation parameters, including froth depth, air flowrate, and frother dosage, on the froth and collection zone recovery and the flowrate of particles into the froth phase were investigated in a 10 m3 industrial cell. The results showed that froth recovery increases upon increasing air flowrate and frother dosage, as well as reducing froth depth. While all tested parameters affected the particles that entered into the froth phase, air flowrate and frother dosage showed the most and least significance, respectively. When the air flowrate, frother dosage, and froth depth

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3

Yianatos, Juan, Paulina Vallejos, Luis Vinnett, and Sebastián Arriagada. "Semi-Continuous Froth Discharge to Reduce Entrainment of Fine Particles in Flotation Cells Subject to Low-Mineralized Froths." Minerals 10, no. 8 (August 5, 2020): 695. http://dx.doi.org/10.3390/min10080695.

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An operational strategy is proposed to improve the metallurgical performance of flotation cells subject to low-mineralized froths. This strategy consists of using a semi-continuous discharge into the concentrate, in which the froth is operated under loading and unloading periods. A transient model is developed to evaluate the proposed approach. The model is calibrated using experimental data from two industrial flotation banks. The metallurgical performances of the last cells of these banks are then simulated, considering the semi-continuous froth discharge. The results show that the semi-cont

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4

Jera, Tawona Martin, and Clayton Bhondayi. "A Review on Froth Washing in Flotation." Minerals 12, no. 11 (November 19, 2022): 1462. http://dx.doi.org/10.3390/min12111462.

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In the attempt to process lower-grade ores, mineral flotation has taken centre stage as the preferred recovery route. However, in many instances, the froth product does not have a high grade due to the entrainment of gangue minerals. Industry has solved this challenge by introducing froth washing mechanisms. Clean wash water is introduced into or on top of the froth to reduce the amount of entrained gangue in the final concentrate. This article reviews froth-washing systems in detail and highlights the advantages and disadvantages of each wash-water delivery mechanism. Comments on industrial u

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5

Jera, Tawona M., and Clayton Bhondayi. "A Review of Flotation Physical Froth Flow Modifiers." Minerals 11, no. 8 (August 10, 2021): 864. http://dx.doi.org/10.3390/min11080864.

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Over the past few decades, the need to process more minerals while lowering capital costs has led to an increase in the size of flotation cells, e.g., 0.03 m3 to 1000 m3. However, this increase has created new challenges in the operation and design of industrial flotation cells, particularly in terms of froth removal, because the distance the froth must travel increases with an increase in the flotation cell diameter. This has a negative impact on recovery. Physical froth flow modifiers can be used to improve froth removal. Their major functions are to modify and optimise the flow of the froth

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6

Ruismäki, Ronja, Tommi Rinne, Anna Dańczak, Pekka Taskinen, Rodrigo Serna-Guerrero, and Ari Jokilaakso. "Integrating Flotation and Pyrometallurgy for Recovering Graphite and Valuable Metals from Battery Scrap." Metals 10, no. 5 (May 21, 2020): 680. http://dx.doi.org/10.3390/met10050680.

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Since the current volumes of collected end-of-life lithium ion batteries (LIBs) are low, one option to increase the feasibility of their recycling is to feed them to existing metals production processes. This work presents a novel approach to integrate froth flotation as a mechanical treatment to optimize the recovery of valuable metals from LIB scrap and minimize their loss in the nickel slag cleaning process. Additionally, the conventional reducing agent in slag cleaning, namely coke, is replaced with graphite contained in the LIB waste flotation products. Using proper conditioning procedure

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7

Duoc, Tran Van, Nguyen Hoang Son, Nhu Thi Kim Dung, and Vu Thi Chinh. "Recovery of clean coal from blast furnace dusts by flotation column." Journal of Mining and Earth Sciences 61, no. 1 (February 28, 2020): 124–31. http://dx.doi.org/10.46326/jmes.2020.61(1).14.

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The paper presents the results of the study on recovery of clean coals from blast furnace dusts of the Cao Bang Iron Steel plant. The study has explored the effects of the most important operating parameters on the coal flotation performance including flotation reagent dosage, solid concentration, froth wash-water rate, flotation time and the froth thickness. The results of the study showed that using a combination of a rougher and a cleaning flotation operations at respectively collector dosage, solid concentration, flotation time, froth wash-water rate and froth thickness of 1000 g/t, 100 g/

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8

Khan, Shaihroz, Omar Bashir Wani, Mohammad Shoaib, John Forster, Rana N. Sodhi, Darryel Boucher, and Erin R. Bobicki. "Mineral carbonation for serpentine mitigation in nickel processing: a step towards industrial carbon capture and storage." Faraday Discussions 230 (2021): 172–86. http://dx.doi.org/10.1039/d1fd00006c.

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We incorporate the carbonation of ultramafic ore followed by froth-flotation to enhance nickel recovery in the beneficiation stage, instead of the traditional froth-flotation step for nickel processing.

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9

Yianatos, J. B., M. H. Moys, F. Contreras, and A. Villanueva. "Froth recovery of industrial flotation cells." Minerals Engineering 21, no. 12-14 (November 2008): 817–25. http://dx.doi.org/10.1016/j.mineng.2007.12.012.

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10

Neethling, S. J. "Simple approximations for estimating froth recovery." International Journal of Mineral Processing 89, no. 1-4 (December 2008): 44–52. http://dx.doi.org/10.1016/j.minpro.2008.09.007.

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11

Taner, Hasan Ali, and Vildan Onen. "Study of chalcopyrite flotation in the presence of illite using a design of experiments approach." Clay Minerals 56, no. 3 (September 2021): 197–209. http://dx.doi.org/10.1180/clm.2021.35.

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AbstractThe interaction between chalcopyrite and illite particles was analysed using ζ-potential measurements and flotation tests. Statistically designed tests were used to examine the factors controlling flotation (frother concentration, dispersant concentration, froth height, airflow rate and amount of clay). Furthermore, the significance levels of the impacts of these factors on responses (chalcopyrite grade/recovery, pyrite grade/recovery, dynamic froth stability and mean bubble diameter) were determined. Chalcopyrite and pyrite ζ-potentials were measured in the presence of illite. The add

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12

ÄMMÄLÄ, ARI, LIISA MÄKINEN, HENRIKKI LIIMATAINEN, and JOUKO NIINIMÄKI. "Effect of carboxymethylcellulose and starch depressants on recovery of filler and fines in tertiary flotation." March 2013 12, no. 3 (April 1, 2013): 43–50. http://dx.doi.org/10.32964/tj12.3.43.

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Yield loss in state-of-art deinking processes for newsprint is usually 15%–20%. Economic and environmental concerns associated with reject handling point to a need to improve yield. This paper describes a study conducted to determine whether it is possible to recover fillers and fiber fines from flotation froth reject of an old newsprint/old magazine processing mill by refloating froth with and without the use of depressants. The recovery of approximately 10%–15% of material was observed without the use of additional flotation chemicals in the reflotation stage. Carboxymethylcellulose (CMC) wa

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13

Muanda, Meschack Mukunga, Pele Pascal Daniel Omalanga, and Vanessa Mwambaie Mitonga. "Comparative Cleaning Stages in Recovery of Copper and Cobalt from Tailings using Potassium Amylxanthate as Collector." European Journal of Engineering and Technology Research 6, no. 2 (February 16, 2021): 96–100. http://dx.doi.org/10.24018/ejers.2021.6.2.2165.

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Copper and cobalt demand is projected to be increased from here to 2050 and the challenge is to find treat economically minerals which contains those metals. Several tailings from oxide ores throughout the word contain good grades of copper and cobalt that should be recovered by froth flotation. This paper investigates the recovery of copper and cobalt through reprocessing of spiral classifier tailings by determination of specific reagents dosage. The flotation behaviours of malachite and heterogenite were studied through many roughing and cleaning flotation tests in order to recovery most of

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14

Muanda, Meschack Mukunga, Pele Pascal Daniel Omalanga, and Vanessa Mwambaie Mitonga. "Comparative Cleaning Stages in Recovery of Copper and Cobalt from Tailings using Potassium Amylxanthate as Collector." European Journal of Engineering and Technology Research 6, no. 2 (February 16, 2021): 96–100. http://dx.doi.org/10.24018/ejeng.2021.6.2.2165.

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Copper and cobalt demand is projected to be increased from here to 2050 and the challenge is to find treat economically minerals which contains those metals. Several tailings from oxide ores throughout the word contain good grades of copper and cobalt that should be recovered by froth flotation. This paper investigates the recovery of copper and cobalt through reprocessing of spiral classifier tailings by determination of specific reagents dosage. The flotation behaviours of malachite and heterogenite were studied through many roughing and cleaning flotation tests in order to recovery most of

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15

Yu, Shaning, and J. A. Finch. "Froth Zone Recovery in a Flotation Column." Canadian Metallurgical Quarterly 29, no. 3 (July 1990): 237–38. http://dx.doi.org/10.1179/cmq.1990.29.3.237.

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16

Lepage, Mark R., Cesar O. Gomez, and Kristian E. Waters. "Using Top-of-Froth Conductivity to Infer Water Overflow Rate in a Two-Phase Lab-Scale Flotation Column." Minerals 12, no. 4 (April 7, 2022): 454. http://dx.doi.org/10.3390/min12040454.

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The metallurgical performance of a flotation machine is largely defined by phenomena occurring in the froth zone. The water content in the froth affects recovery by influencing froth stability and mobility and, at the same time, reduces grade by mechanical entrainment of gangue particles in the overflow water. Efficient operation requires a compromise between the water carried by bubbles from the collection zone and that which overflows. It is believed that the most suitable operating strategy could be based on the measurement of froth water content, as a strong correlation with water overflow

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17

You, Hao, Hongjuan Sun, Tongjiang Peng, Yating Qin, and Song Tang. "Recovery of Residual Carbon from Ti-Extraction Blast Furnace Slag by Flotation with Simultaneous Dechlorination." Energies 15, no. 18 (September 16, 2022): 6777. http://dx.doi.org/10.3390/en15186777.

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Ti-extraction blast furnace slag (EBFS) is a secondary slag produced by titanium extraction of titanium-bearing blast furnace slag (TBBFS), which is challenging to be used directly because of its residual carbon and chlorine. This study was performed to recover the residual carbon and remove chlorine from EBFS by froth flotation. The finely ground EBFS (FEBFS) contained graphitized carbon and khamrabaevite and had a 10.19% loss on ignition (LOI) and 5.52% Cl. The graphitized carbon was mainly recovered by flotation rather than khamrabaevite. Graphitized carbon appeared as flakes embedded in or

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18

Vallejos, Paulina, Juan Yianatos, Rodrigo Grau, and Alejandro Yáñez. "The Impact of Froth Launders Design in an Industrial Flotation Bank Using Novel Metallurgical and Hydrodynamic Models." Minerals 13, no. 2 (January 24, 2023): 169. http://dx.doi.org/10.3390/min13020169.

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In flotation cells, especially in large flotation units, froth management is a crucial variable that should be considered during the design phase or optimized to improve the performance of existing flotation circuits. This paper presents a simulation evaluation of the effect of launder design on the metallurgical performance of an industrial flotation circuit consisting of five TankCell® e630 (630 m3) cells in a Cu rougher duty. This analysis was carried out using a new industrial simulator that includes novel metallurgical and hydrodynamic models, developed from a wide database collected from

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19

McFadzean, B., T. Marozva, and J. Wiese. "Flotation frother mixtures: Decoupling the sub-processes of froth stability, froth recovery and entrainment." Minerals Engineering 85 (January 2016): 72–79. http://dx.doi.org/10.1016/j.mineng.2015.10.014.

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20

Mdoe, Reuben J., and Anand Anupam. "Recovery of Coal Values from Middling and Rejects by Froth Flotation and Mozley Mineral Separation." Studies in Engineering and Technology 8, no. 1 (June 18, 2021): 40. http://dx.doi.org/10.11114/set.v8i1.4785.

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The recovery of coals values from Middling and Rejects carries out by using Froth flotation and Mozley Mineral Separation. The middling and rejects are the waste products from gravity beneficiation process, it has been noted that most of washery plants are selling this product at low cost because they have less values.The independent variables selected for Mozley Mineral Separator and their ranges were indicated in the parentheses as follow, water flow rates (400, 600, 800ml/s), amplitude (1.25, 1.5, 1.75inch) and collection time (30, 40, 60 s) while the independent variables for froth flotati

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21

Guler, Taki, and Ercan Polat. "Gangue Entrainment in Olivine Flotation: Effect of MIBC Dosage on the Mitigation of Lizardite Recovery." Current Physical Chemistry 10, no. 2 (August 19, 2020): 98–106. http://dx.doi.org/10.2174/1877946809666190919092219.

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Background: Olivine is an important industrial raw material especially for metallurgical applications like foundry sand, refractory, slag conditioning, etc. Loss On Ignition (LOI) value (>1%) is the main specification of olivine ore/concentrate for those areas together with the chemical specifications. Objective: This flotation study was conducted in natural pH condition with Na-oleate as collector to clarify the effect of frother (MIBC) dosage on the LOI value of olivine concentrate. Methods: Characterization of ore sample for this study was made by XRD, XRF and petrographic analyses. Liza

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22

Gutierrez, Leopoldo, Fernando Betancourt, Lina Uribe, and Miguel Maldonado. "Influence of Seawater on the Degree of Entrainment in the Flotation of a Synthetic Copper Ore." Minerals 10, no. 7 (July 9, 2020): 615. http://dx.doi.org/10.3390/min10070615.

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Froth flotation is a process in which hydrophobic particles attach to bubbles forming particle–bubble aggregates, which are transported to the top section of the cell where they overflow to form the concentrate. Particles also reach the concentrate by entrainment, which is a non-selective process that leads to low concentrate grades. The objective of this work was to study and compare the degree of entrainment measured using three methods, in fresh and seawater, and using methyl isobutyl carbinol (MIBC) and DF-250 as frothers. The experimental results indicated that the degree of entrainment d

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23

Park, Chul-Hyun, Ho-Seok Jeon, Byoung-Gon Kim, and Oh-Hyung Han. "Recovery of Roasting-Molybdenite Concentrate by Froth Flotation." Korean Journal of Materials Research 19, no. 12 (December 27, 2009): 661–66. http://dx.doi.org/10.3740/mrsk.2009.19.12.661.

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24

Rahman, Reza M., Seher Ata, and Graeme J. Jameson. "Froth recovery measurements in an industrial flotation cell." Minerals Engineering 53 (November 2013): 193–202. http://dx.doi.org/10.1016/j.mineng.2013.08.003.

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25

Alexander, D. J., J. P. Franzidis, and E. V. Manlapig. "Froth recovery measurement in plant scale flotation cells." Minerals Engineering 16, no. 11 (November 2003): 1197–203. http://dx.doi.org/10.1016/j.mineng.2003.07.016.

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26

Lan, Zhuo Yue, Yong Cheng Zhou, and Xiong Tong. "Recovery of Fine Cassiterite from Tin Tailings Slime by Froth Flotation." Advanced Materials Research 634-638 (January 2013): 3478–83. http://dx.doi.org/10.4028/www.scientific.net/amr.634-638.3478.

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Tin gravity slime tailings of Datun mineral processing plant in south-eastern China contains fine and ultrafine cassiterite. Tin recovery from the slime tailings was studies in the presence of different flotation reagents. A flotation process has been used on a laboratory scale to investigate the effect of various reagents such as collectors, auxiliary collector, activators, ect., and theirs dosages in neutral flotation environment. To reach an optimum tin recovery, different dosages of the reagents were also studied. Due to cassiterite is friable and a large amount of fines and slimes were ge

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27

Chen, Yong, Jiankang Wen, Yongsheng Song, Wenjuan Li, Shuang Liu, and Ying Liu. "Mineralogical Characteristics of Pegmatite Tailings and Beneficiation Assessment of Pollucite in Recovering Cesium." Minerals 12, no. 5 (April 27, 2022): 541. http://dx.doi.org/10.3390/min12050541.

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The technological mineralogical characteristics of cesium-containing minerals in tailings were examined by means of chemical analysis, the energy spectrum analysis method, and MLA (mineral liberation analyzer) to determine the element content, phase analysis, associated mineral components, degree of liberation, particle size, etc. The results showed that the samples mainly contained spodumene, quartz, feldspar, mica, and other minerals. Pollucite was the main cesium-containing mineral in the sample, which had a cesium oxide content that was as high as 34.58%. The mineral content of pollucite i

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28

Ityokumbul, M. T., W. Bulani, and N. Kosaric. "Economic and Environmental Benefits from Froth Flotation Recovery of Titanium, Zirconium, Iron and Rare Earth Minerals from Oilsand Tailings." Water Science and Technology 19, no. 3-4 (March 1, 1987): 323–31. http://dx.doi.org/10.2166/wst.1987.0213.

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The froth flotation recovery of titanium, zirconium, iron and rare earth minerals from oil-sand tailings and their further beneficiation are described in this paper. The recovery of rare earth mineral value from these tailings has not been reported previously due to their low concentrations. The economic value of all of these minerals recovered in this way has been estimated to be almost double the cost of full effective tailings management. Adoption of these processes can eliminate the current unsound practice of simply storing these tailings behind high dykes in large lagoons.

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29

Al-Maghrabi, Mohammed-Noor. "Modeling the Recovery of Froth Flotation Using Game Theory." Journal of Mining World Express 5 (2016): 1. http://dx.doi.org/10.14355/mwe.2016.05.001.

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30

Jameson, Graeme J., and Cagri Emer. "Coarse chalcopyrite recovery in a universal froth flotation machine." Minerals Engineering 134 (April 2019): 118–33. http://dx.doi.org/10.1016/j.mineng.2019.01.024.

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31

Hay, Martyn P. "Optimising froth condition and recovery for a nickel ore." Minerals Engineering 21, no. 12-14 (November 2008): 861–72. http://dx.doi.org/10.1016/j.mineng.2008.04.013.

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32

Zhang, Jie, Jiapeng Li, Yu Wang, Meijie Sun, Lufan Wang, and Yanan Tu. "Separation of Graphites and Cathode Materials from Spent Lithium-Ion Batteries Using Roasting–Froth Flotation." Sustainability 15, no. 1 (December 20, 2022): 30. http://dx.doi.org/10.3390/su15010030.

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The separation of graphites and cathode materials from spent lithium-ion batteries (LIBs) is essential to close the loop of material used in LIBs. In this study, the roasting characteristics of the spent LIB materials are carefully analyzed, and the effects of roasting on the surface morphology and elemental chemical states of electrode materials are fully investigated by thermogravimetric analysis, SEM-EDS, and XPS to explore the roasting–flotation enhancement mechanism. Then, froth flotation is utilized to separate the graphites and cathode materials from the spent LIB materials. The optimal

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33

Dvoichenkova, G. P., V. V. Morozov, E. L. Chanturia, and E. G. Kovalenko. "Selection of recycled water electrochemical conditioning parameters for preparation of diamond-bearing kimberlite for froth separation." Gornye nauki i tekhnologii = Mining Science and Technology (Russia) 6, no. 3 (October 13, 2021): 170–80. http://dx.doi.org/10.17073/2500-0632-2021-3-170-180.

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The main reason of decreasing diamond recovery through froth separation is their surface hydrophilization by hypergene minerals and technogenic films, crystallized from the supersaturated aqueous phase, fixed on the surface structurally or by adhesion. Various types of physical actions, including thermal and ultrasonic treatment of the initial feed of froth separation, are recommended to increase the diamond-bearing kimberlite beneficiation process performance, providing cleaning of the surface of diamonds due to destruction of their accretions with rock minerals and removal of film hydrophili

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34

Cao, Qin Bo, Shu Ming Wen, Chen Xiu Li, Shao Jun Bai, and Dan Liu. "Application of New Flotation Machine on Phosphate Flotation." Advanced Materials Research 616-618 (December 2012): 624–27. http://dx.doi.org/10.4028/www.scientific.net/amr.616-618.624.

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Phosphate is a typical oxide ore characterizing that generating abundant froth during flotation. In this research a new flotation machine was employed in the flotation of phosphate. Comparing to regular flotation machine, in the reverse flotation of dolomite the recovery and grade of MgO has no significance improvement. While, in the case of reverse flotation of silicon dioxide, the new flotation machine has significance advantage. In 5 minutes of flotation time, the yield of froth is 20.66% with new machine, which equals to yield using regular machine under 8 minutes. The flotation time has b

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35

Bustamante Rúa, Moises Oswaldo, Sindy Dayanis Gonzalez Arias, and Pablo Bustamante Baena. "Nickel laterite concentration through a non-conventional method with surface sulfidization." DYNA 87, no. 215 (October 1, 2020): 18–27. http://dx.doi.org/10.15446/dyna.v87n215.85981.

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Nickel ores are found mainly as sulfides and laterites in oxidized ores, such as iron oxides, which are usually “Ni-bearing”. This investigation determined the physical-chemical conditions necessary to increase the tenor and recovery in lateritic deposits, with the implementation of a new technology that allows the increase of the tenor (a process called “up-grading”). The froth flotation is proposed as a concentrating process to increase the Nickel content in the lateritic deposits. By means of sulfidization and direct flotation, specific hydrophobicity of the mineral is achieved, substantial

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36

Akande, S., E. O. Ajaka, O. O. Alabi, and T. A. Olatunji. "Effects of varied process parameters on froth flotation efficiency: A case study of Itakpe iron ore." Nigerian Journal of Technology 39, no. 3 (September 16, 2020): 807–15. http://dx.doi.org/10.4314/njt.v39i3.21.

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The dire need for Itakpe iron ore concentrates of appreciable iron content meets for smelting operation necessitated this study. Core samples of the iron ore sourced from Itakpe, Kogi State, Nigeria were prepared for petrological analysis followed by chemical and particle size analyses. Froth flotation was done using different collectors at varying particle sizes and pH values. Characterization studies carried out revealed that Itakpe iron ore is a lean ore assaying 36.18% Fe2O3 and contains predominantly quartz, sillimanite, and haematite. Its liberation size lies favourably at 75 μm. Process

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37

Amelunxen, Peter, Gerson Sandoval, David Barriga, and Roger Amelunxen. "The implications of the froth recovery at the laboratory scale." Minerals Engineering 66-68 (November 2014): 54–61. http://dx.doi.org/10.1016/j.mineng.2014.04.022.

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38

Koutlemani, M. M., P. Mavros, A. I. Zouboulis, and K. A. Matis. "Recovery of Co2+Ions from Aqueous Solutions by Froth Flotation." Separation Science and Technology 29, no. 7 (April 1994): 867–86. http://dx.doi.org/10.1080/01496399408006631.

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39

Muhammad Arif Bhatti, Muhammad Arif Bhatti, Kamran Raza Kazmi Kamran Raza Kazmi, Samreen Zahra Samreen Zahra, and Ansar Mehmood and Rashid Mehmood Ansar Mehmood and Rashid Mehmood. "Beneficiation Study on Low-Grade Graphite Ore of Shounter Valley, Azad Kashmir, Pakistan." Journal of the chemical society of pakistan 42, no. 1 (2020): 1. http://dx.doi.org/10.52568/000617.

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A low-grade graphite ore originating from Kael area, Shounter Valley, Azad Kashmir, assaying 8.90% graphite content was upgraded by froth flotation technique to produce a commercial grade graphite concentrate. Mineral phases present in the ore were identified by using X-ray diffraction (XRD) technique. The variables of flotation process such as particle size of the feed, pH of the pulp, % solids of the pulp, speed of impeller, type and quantity of collecting and frothing agents, conditioning time and froth collecting time were optimized to get maximum grade and recovery of graphite mineral. Th

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40

Muhammad Arif Bhatti, Muhammad Arif Bhatti, Kamran Raza Kazmi Kamran Raza Kazmi, Samreen Zahra Samreen Zahra, and Ansar Mehmood and Rashid Mehmood Ansar Mehmood and Rashid Mehmood. "Beneficiation Study on Low-Grade Graphite Ore of Shounter Valley, Azad Kashmir, Pakistan." Journal of the chemical society of pakistan 42, no. 1 (2020): 1. http://dx.doi.org/10.52568/000617/jcsp/42.01.2020.

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A low-grade graphite ore originating from Kael area, Shounter Valley, Azad Kashmir, assaying 8.90% graphite content was upgraded by froth flotation technique to produce a commercial grade graphite concentrate. Mineral phases present in the ore were identified by using X-ray diffraction (XRD) technique. The variables of flotation process such as particle size of the feed, pH of the pulp, % solids of the pulp, speed of impeller, type and quantity of collecting and frothing agents, conditioning time and froth collecting time were optimized to get maximum grade and recovery of graphite mineral. Th

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41

Mehta, Neha, Giovanna Dino, Iride Passarella, Franco Ajmone-Marsan, Piergiorgio Rossetti, and Domenico De Luca. "Assessment of the Possible Reuse of Extractive Waste Coming from Abandoned Mine Sites: Case Study in Gorno, Italy." Sustainability 12, no. 6 (March 21, 2020): 2471. http://dx.doi.org/10.3390/su12062471.

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Supply of resources, a growing population, and environmental pollution are some of the main challenges facing the contemporary world. The rapid development of mining activities has produced huge amounts of waste. This waste, found in abandoned mine sites, provides the potential opportunity of extracting raw material. The current study, therefore, focuses on testing the validation of a shared methodology to recover extractive waste from abandoned mines, and applies this methodology to a case study in Gorno, northwest Italy. The methods focused on: (1) analyzing the impact of tailings and fine f

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42

Grassia, P., E. Mas-Hernández, N. Shokri, S. J. Cox, G. Mishuris, and W. R. Rossen. "Analysis of a model for foam improved oil recovery." Journal of Fluid Mechanics 751 (June 20, 2014): 346–405. http://dx.doi.org/10.1017/jfm.2014.287.

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AbstractDuring improved oil recovery (IOR), gas may be introduced into a porous reservoir filled with surfactant solution in order to form foam. A model for the evolution of the resulting foam front known as ‘pressure-driven growth’ is analysed. An asymptotic solution of this model for long times is derived that shows that foam can propagate indefinitely into the reservoir without gravity override. Moreover, ‘pressure-driven growth’ is shown to correspond to a special case of the more general ‘viscous froth’ model. In particular, it is a singular limit of the viscous froth, corresponding to th

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43

Leiva, Claudio, Claudio Acuña, Luis Bergh, Saija Luukkanen, and Cristóbal da Silva. "Online Superficial Gas Velocity, Holdup, and Froth Depth Sensor for Flotation Cells." Journal of Sensors 2022 (December 19, 2022): 1–12. http://dx.doi.org/10.1155/2022/7221294.

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In flotation process, the efficiency and selectivity depend on mineralogy, particle size distribution and liberation, reagents added, mixing, and particle coverage. However, the kinetics of particle recovery is highly dependent on cell hydrodynamic and circuit configuration and operational strategy. Controlling froth depth and gas flow rate, measured as superficial gas velocity, is a straightforward alternative related to kinetics in the froth and collection zones. However, these parameters are not measured accurately. Froth depth measurement is based on a floating device coupled with a sonic

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44

Högberg, Ida, Dariusz Zasadowski, Anette Karlsson, Bengt Wikman, Fredrik Andersson, Erik Hedenström, Håkan Edlund, and Magnus Norgren. "Brightness development of a hydrogen peroxide bleached spruce TMP. Comparisons of pre-treatments with DTPA and a separable chelating surfactant." Nordic Pulp & Paper Research Journal 27, no. 1 (January 1, 2012): 50–55. http://dx.doi.org/10.3183/npprj-2012-27-01-p050-055.

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Abstract In this investigation a new type of recoverable complexing agent (chelating surfactant) has been compared with a conventional complexing agent; diethylenetriamine pentaacetic acid (DTPA), in the metal ion sequestering of thermomechanical pulps (TMP) to be hydrogen peroxide bleached. After different degrees of washing of the pulps, bleaching experiments at different total alkali charges were performed with and without sodium silicate additions, and the ISO brightness of handmade sheets was measured. The residual hydrogen peroxide in the bleaching liquor was also determined. No signific

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45

Alabi, Oladunni Oyelola, Olanrewaju Rotimi Bodede, and Taiwo Paul Popoola. "Froth Flotation Beneficiation a Sure Way to Value Addition to Arufu (Nigeria) Zinc Ore Towards Smelting Grade Concentrate Production." European Journal of Engineering Research and Science 5, no. 5 (May 31, 2020): 622–25. http://dx.doi.org/10.24018/ejers.2020.5.5.1933.

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Froth flotation of Arufu ore was carried out at varying particle sizes after characterization. Fifty (50) kilogram crude sample of the ore was sourced from Arufu zinc mine in Arufu town of Nassarawa state, Nigeria. The whole sample was crushed out of which five (5) kilogram was sampled out using random sampling method. One kilogram each of the resulting sample was then ground and sieved to three particle sizes viz; 63 µm, 90 µm and 125 µm. Chemical analysis of the representative sample of the sourced ore was carried out using Energy Dispersive X-Ray Fluorescence Spectrometer (ED –XRF). 250 gra

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46

Alabi, Oladunni Oyelola, Olanrewaju Rotimi Bodede, and Taiwo Paul Popoola. "Froth Flotation Beneficiation a Sure Way to Value Addition to Arufu (Nigeria) Zinc Ore Towards Smelting Grade Concentrate Production." European Journal of Engineering and Technology Research 5, no. 5 (May 31, 2020): 622–25. http://dx.doi.org/10.24018/ejeng.2020.5.5.1933.

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Froth flotation of Arufu ore was carried out at varying particle sizes after characterization. Fifty (50) kilogram crude sample of the ore was sourced from Arufu zinc mine in Arufu town of Nassarawa state, Nigeria. The whole sample was crushed out of which five (5) kilogram was sampled out using random sampling method. One kilogram each of the resulting sample was then ground and sieved to three particle sizes viz; 63 µm, 90 µm and 125 µm. Chemical analysis of the representative sample of the sourced ore was carried out using Energy Dispersive X-Ray Fluorescence Spectrometer (ED –XRF). 250 gra

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47

Cruz, Constanza, Sebastián Herrera-León, Daniel Calisaya-Azpilcueta, Ruth Salazar, Luis A. Cisternas, and Andrzej Kraslawski. "Using Waste Brine from Desalination Plant as a Source of Industrial Water in Copper Mining Industry." Minerals 12, no. 9 (September 14, 2022): 1162. http://dx.doi.org/10.3390/min12091162.

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One of the main challenges of seawater desalination is a large volume of waste brine production that is commonly discharged into the sea and may threaten the marine ecosystem. This is critical in regions where conventional water resources are scarce and desalinated seawater is an alternative to meet water demand. Especially in regions where the mining industry is a key player in the economic development. The novelty of this research consists in the determination of the potential use of waste brine, discharged from the reverse osmosis process, as a source of industrial water in copper mining in

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Morozov, Iurii, Tatiana Intogarova, Olga Valieva, and Iuliia Donets. "Flotation classification in closed-circuit grinding as a way of reducing sulphide ore overgrinding." Izvestiya vysshikh uchebnykh zavedenii. Gornyi zhurnal, no. 1 (February 17, 2021): 85–96. http://dx.doi.org/10.21440/0536-1028-2021-1-85-96.

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Research object and aim. Flotation classification in closed-circuit grinding is a way of improving copper ore flotation indicators by reducing minerals overgrinding. Due to valuable components froth recovery with their uncovering in the process of grinding, loss of copper in flotation tailings with secondary slime are reduced significantly. The research aims to study the possibility to improve the flotation of copper ore based on the use of flotation classification in the closed-circuit grinding. Methodology. In order to solve the problem, laboratory studies on closed-circuit grinding experime

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Dzingai, Mathew, Malibongwe Manono, and Kirsten Corin. "Simulating the Effect of Water Recirculation on Flotation through Ion-Spiking: Effect of Ca2+ and Mg2+." Minerals 10, no. 11 (November 19, 2020): 1033. http://dx.doi.org/10.3390/min10111033.

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Froth flotation is a multifaceted complex process which is water intensive. The use of recycled water as an alternative source of water to meet water demands of the process may introduce deleterious inorganic ions that affect the mineral surface, pulp chemistry, and reagent action, hence the need to establish whether threshold ion concentrations exist beyond which flotation performance will be adversely affected. This is of paramount importance in informing appropriate recycle streams and allowing simple, cost-effective water treatment methods to be applied. Here we report that increasing ioni

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Yianatos, J., and P. Vallejos. "Limiting conditions in large flotation cells: Froth recovery and bubble loading." Minerals Engineering 185 (July 2022): 107695. http://dx.doi.org/10.1016/j.mineng.2022.107695.

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