Letteratura scientifica selezionata sul tema "Froth flotation"

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Articoli di riviste sul tema "Froth flotation"

1

Aldrich, Chris, and Xiu Liu. "Monitoring of Flotation Systems by Use of Multivariate Froth Image Analysis." Minerals 11, no. 7 (2021): 683. http://dx.doi.org/10.3390/min11070683.

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Froth image analysis has been considered widely in the identification of operational regimes in flotation circuits, the characterisation of froths in terms of bubble size distributions, froth stability and local froth velocity patterns, or as a basis for the development of inferential online sensors for chemical species in the froth. Relatively few studies have considered flotation froth image analysis in unsupervised process monitoring applications. In this study, it is shown that froth image analysis can be combined with traditional multivariate statistical process monitoring methods for rel
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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 (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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Farai, Katsande, Phiri, and S. Nyambara Mufaro. "Optimizing froth flotation techniques for sustainable beneficiation of spodumene and lepidolite in Zimbabwe: Enhancing lithium recovery for battery-grade material production." i-manager's Journal on Material Science 12, no. 3 (2024): 31. https://doi.org/10.26634/jms.12.3.21739.

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Zimbabwe hosts Africa's largest hard-rock lithium reserves, presenting a significant opportunity for local battery-grade lithium production. This study focuses on optimizing froth flotation for sustainable beneficiation of spodumene and lepidolite, primarily from the Bikita lithium deposit. Experimental results confirmed froth flotation as a highly effective method, achieving Li₂O concentrate grades up to 5.8% from ores initially averaging 1–3.2% Li₂O. Anionic collectors such as oleic acid and sodium oleate were evaluated, with oleic acid proving more effective for spodumene and sodium oleate
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Wang, Lei, and Chao Li. "A Brief Review of Pulp and Froth Rheology in Mineral Flotation." Journal of Chemistry 2020 (February 8, 2020): 1–16. http://dx.doi.org/10.1155/2020/3894542.

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In mineral flotation, rheological problems have limited the efficient upgrading of low-grade and complex ores. Since pulp and froth rheology are deemed to play different roles in influencing the separation performance, in this paper, a brief review on pulp and froth rheology in flotation is provided, with an objective of developing a basic understanding of rheology in flotation. The essential variables that affect the rheology of a flotation pulp and froth are discussed. The methods for measuring pulp and froth rheology are presented. The correlations of pulp and froth rheological properties t
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WAKAMATSU, Takahide. "Froth flotation." Hyomen Kagaku 12, no. 1 (1991): 28–33. http://dx.doi.org/10.1380/jsssj.12.28.

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Han, K. N. "Froth flotation." International Journal of Mineral Processing 28, no. 1-2 (1990): 152–54. http://dx.doi.org/10.1016/0301-7516(90)90034-v.

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Ralston, J. A. "Froth flotation." Minerals Engineering 2, no. 2 (1989): 272. http://dx.doi.org/10.1016/0892-6875(89)90049-6.

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Li, Chao, Zhongren Wu, Zhihang Wu, Xianggen Chen, and Yijun Cao. "Effect of the Interaction between Clays and Cations on Froth Rheology in Flotation." Minerals 14, no. 7 (2024): 706. http://dx.doi.org/10.3390/min14070706.

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Abstract (sommario):
The significance of froth rheology in affecting flotation performance is widely acknowledged. Clays could deteriorate flotation performance by altering froth rheology. The presence of cations further complicates the flotation system. Thus far, the interaction between clay minerals and cations and their impact on froth rheology remains unclear. The present work selected three typical clays and cations with two valences (Na+ and Ca2+) to investigate their interacting influences on froth rheology. The results indicate that clays exhibit diverse froth rheological behaviors, with increasing cation
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Jera, Tawona M., and Clayton Bhondayi. "A Review of Flotation Physical Froth Flow Modifiers." Minerals 11, no. 8 (2021): 864. http://dx.doi.org/10.3390/min11080864.

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Abstract (sommario):
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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Zhou, Xiaojun, and Yiping He. "Deep Ensemble Learning-Based Sensor for Flotation Froth Image Recognition." Sensors 24, no. 15 (2024): 5048. http://dx.doi.org/10.3390/s24155048.

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Froth flotation is a widespread and important method for mineral separation, significantly influencing the purity and quality of extracted minerals. Traditionally, workers need to control chemical dosages by observing the visual characteristics of flotation froth, but this requires considerable experience and operational skills. This paper designs a deep ensemble learning-based sensor for flotation froth image recognition to monitor actual flotation froth working conditions, so as to assist operators in facilitating chemical dosage adjustments and achieve the industrial goals of promoting conc
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Tesi sul tema "Froth flotation"

1

Hanumanth, G. S. "Froth flotation of china clay." Thesis, Swansea University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.637217.

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An experimental and theoretical study of froth flotation separation of kaolinite from other associated minerals of china clay is presented herein. A new laboratory flotation equipment has been designed and built for the above study. Its novel features are discussed. Effects of physico-chemical variables such as pH, initial solid concentration of feed, froth height and air flowrate are studied by systematically carrying out series of semi-batch kinetic experiments. pH is shown to influence both recovery and grade of the product. The effects of pH are interpreted in terms of particle/particle in
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Kaya, Muammer. "Froth washing in mechanical flotation cells." Thesis, McGill University, 1989. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74232.

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This basic research project was aimed at assessing the potential of wash water for mechanical flotation machines. Test work at laboratory scale first examined the nature of entrainment; froth structures with and without wash water; and the location, geometry, and flowrate of wash water addition. The relationship between slurry, total water recovery and gangue recovery was characterized. Confirmatory work at pilot plant was completed.<br>The effect of wash water on metallurgical performance was tested with various streams from the Falconbridge Strathcona mill at laboratory and pilot and full pl
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Kelley, Kyle. "Model-based Computer Simulation of Froth Flotation." Thesis, Virginia Tech, 2011. http://hdl.handle.net/10919/76850.

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Froth flotation is a separation process by which particles are selectively attached to air bubbles. It is one of the most dynamically complex industrial processes in use today. This complexity has steered research towards understanding the fundamental principles of the process. Relatively few researchers have successfully attempted to create a flotation simulator based on first principles. This thesis presents the development and testing of a simulator called SimuFloat, which is based on the flotation model developed at Virginia Tech. Flotation of chalcopyrite, coal, and phosphate are sim
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Henwood, Daryl. "The effect of conditioning on froth flotation." Master's thesis, University of Cape Town, 1995. http://hdl.handle.net/11427/21416.

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Bibliography: pages 154-159.<br>The method and extent to which mineral slurries are conditioned have been shown to greatly affect flotation grades and recovery. Most of this work is very mineral specific and centres around one or two operating variables. One of the major obstacles to understanding the effects of such pretreatment more fully, and to developing a global understanding of conditioning, is the system specific nature of the procedures applied to each mineral, and the apparently conflicting results across a range of mineral types. This thesis sets out to define conditioning both broa
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Zhang, Jian-Gou. "Factors affecting the kinetics of froth flotation." Thesis, University of Leeds, 1989. http://etheses.whiterose.ac.uk/3305/.

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In this research work, three types of flotation models (discrete, mean rate and the gamma function models) are modified based on the relationship between mass recovery and recovery. The modified models can be used to calculate both the recovery and grade of concentrate. Experimental work was carried out by using three different samples, which are chalcopyrite, coal and complex sulphide. In the chalcopyrite and coal flotation, air flow rate (AFR) was varied and different size fractions were considered in coal flotation. In complex sulphide flotation, the impeller speed (IPS) and air flow rate w
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Riaz, Muhammad. "An electrochemical investigation of synergism in froth flotation." Thesis, Brunel University, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.257547.

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Shumba, Tanaka Casandra. "Relationship between flotation operational factors and froth behaviour." Master's thesis, University of Cape Town, 2014. http://hdl.handle.net/11427/9127.

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Includes bibliographical references.<br>This study utilised laboratory-scale column flotation experiments to investigate froth stability, with respect to, water recovery and top-of-froth bubble burst rate. Tests were conducted at different froth heights, superficial air rates and depressant dosages in a 2 m high Plexiglass column, using a PGM bearing UG2 ore from the Bushveld Igneous Complex. Four concentrate and tailings samples were simultaneously collected and solids and water recoveries were determined. Assays of the concentrates were conducted to establish the amount of platinum, palladiu
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Kaushik, Sarthak. "Surface properties of crandallite in relation to froth flotation." Thesis, University of British Columbia, 2012. http://hdl.handle.net/2429/42550.

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The surface properties of crandallite relevant to the anionic flotation of salt-type minerals were investigated through electrokinetic, turbidity, and wettability techniques. All the tests were performed on fine crandallite particles as a function of pH and reagent concentration. The selected reagents included starch and oleic acid. From the zeta potential measurements, the iso-electric point of crandallite was found to be at pH 5.5 and the mineral surface can be expected to be negatively charged under typical flotation conditions (pH 9-11). The value of the iso-electric point correlated well
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Noble, Christopher Aaron. "Laboratory-Scale Analysis of Energy-Efficient Froth Flotation Rotor Design." Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/76881.

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Abstract (sommario):
Froth Flotation is an industrial separation process commonly used in the primary enrichment of run-of-mine mineral material. Over the past 100 years, much of the process's development has come from empirical evolution, rather than fundamental understanding. While many of the governing sub-processes are still poorly understood, the primary influential factors lie within the chemical, equipment, and operational variables unique to each flotation system. This investigation focuses on the phenomenological investigation of the equipment variables, particularly the rotor design, at the laboratory
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Ramberg, J. (Juhani). "Effect of the reagents and minerals on froth electrical conductivity in pilot scale froth flotation process." Master's thesis, University of Oulu, 2016. http://urn.fi/URN:NBN:fi:oulu-201601131001.

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This thesis studies how the changes to the flotation process caused by adjusting pH and the dosage of the flotation reagents affect the electrical conductivity of the froth flotation froth in different parts of the froth. The measurements in the experimental part were done in Oulu Mining School’s continuous minipilot beneficiation plant at the University of Oulu in March and May of 2015. The conductivity of the froth was measured with Outotec’s ERT (Electrical Resistance Tomography) based test probe. The probe was placed inside the 4-litre flotation cell that acted as a rougher in copper refin
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Libri sul tema "Froth flotation"

1

Fan, Xianfeng. Froth flotation of ilmenite ores. University of Birmingham, 1999.

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Rao, S. Ramachandra. Surface Chemistry of Froth Flotation. Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-9124-9.

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Rao, S. Ramachandra. Surface Chemistry of Froth Flotation. Springer US, 2004. http://dx.doi.org/10.1007/978-1-4757-4302-9.

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Latin-American Congress on Froth Flotation (2nd 1985 Concepción, Chile). Froth flotation: Proceedings of the 2nd Latin-American Congress on Froth Flotation, Concepción, Chile, 19-23 August 1985. Elsevier, 1988.

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Karr, C. L. Froth flotation collision efficiencies in strong force fields. U.S. Dept. of the Interior, Bureau of Mines, 1990.

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Riaz, Muhammad. An electrochemical investigation of synergism in froth flotation. Brunel University, 1990.

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Karr, C. L. Froth flotation collision efficiencies in strong force fields. Dept. of the Interior, 1990.

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Ding, Jian. A study on feed slurry aeration in froth flotation. National Library of Canada, 1993.

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Khan, L. A. Froth flotation of coal fines from Illinois coal mine effluent. s.n, 1990.

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International, Colloquium Developments in Froth Flotation 1989 Gordon's Bay South Africa). Developments of froth flotation: International colloquium, 3-4 August 1989, Gordon's Bay, Cape Town. The Branch, 1989.

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Capitoli di libri sul tema "Froth flotation"

1

Adeleke, Abraham Adewale. "Froth Flotation." In Mineral Processing Technology. CRC Press, 2023. http://dx.doi.org/10.1201/9781003323433-13.

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Rao, S. Ramachandra. "Flotation Kinetics and Fine Particle Flotation." In Surface Chemistry of Froth Flotation. Springer US, 2004. http://dx.doi.org/10.1007/978-1-4757-4302-9_14.

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Rao, S. Ramachandra. "Flotation Kinetics and Fine Particle Flotation." In Surface Chemistry of Froth Flotation. Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-9124-9_14.

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Rao, S. Ramachandra. "Flotation Surfactants." In Surface Chemistry of Froth Flotation. Springer US, 2004. http://dx.doi.org/10.1007/978-1-4757-4302-9_9.

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Rao, S. Ramachandra. "Flotation Surfactants." In Surface Chemistry of Froth Flotation. Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-9124-9_9.

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Majumder, Subrata Kumar. "Basics of Froth Flotation." In Mechanical and Solid-Fluid Operations. CRC Press, 2025. https://doi.org/10.1201/9781003581123-15.

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Rao, S. Ramachandra. "Erratum to: Flotation Kinetics and Fine Particle Flotation." In Surface Chemistry of Froth Flotation. Springer US, 2004. http://dx.doi.org/10.1007/978-1-4757-4302-9_15.

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Rao, S. Ramachandra. "Erratum to: Flotation Kinetics and Fine Particle Flotation." In Surface Chemistry of Froth Flotation. Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-9124-9_15.

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Stoev, St, L. Kuzev, M. Metodiev, and Sht Djendova. "Vibroacoustic Improvements of Froth Flotation." In Innovations in Flotation Technology. Springer Netherlands, 1992. http://dx.doi.org/10.1007/978-94-011-2658-8_19.

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Rao, S. Ramachandra. "Surface Forces in Flotation." In Surface Chemistry of Froth Flotation. Springer US, 2004. http://dx.doi.org/10.1007/978-1-4419-9124-9_6.

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Atti di convegni sul tema "Froth flotation"

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Dehon, Victor, Paulina Quintanilla, and Antonio Del Rio Chanona. "Probabilistic Model Predictive Control for Mineral Flotation using Gaussian Processes." In The 35th European Symposium on Computer Aided Process Engineering. PSE Press, 2025. https://doi.org/10.69997/sct.122018.

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Recent advancements in machine learning and time series analysis have opened new avenues for improving predictive control in complex systems such as mineral flotation. Techniques leveraging multivariate predictive control in mineral flotation have seen significant progress in recent years. However, challenges in developing an accurate dynamic model that encapsulates both the pulp and froth phases have hindered further advancements. Now, with a readily available model containing equations that describe the physics of flotation froths, an opportunity for novel control strategies presents itself.
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Pantula, Priyanka D. "Dynamic Data-Based Modeling for Froth Flotation Process." In 2024 Tenth Indian Control Conference (ICC). IEEE, 2024. https://doi.org/10.1109/icc64753.2024.10883720.

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Lindqvist, Johan, Khalid Atta, and Andreas Johansson. "Optimization of Froth Flotation using Geometrically Constrained Extremum Seeking Control." In 2024 IEEE Conference on Control Technology and Applications (CCTA). IEEE, 2024. http://dx.doi.org/10.1109/ccta60707.2024.10666556.

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Prokopov, Egor, Daria Usacheva, Mariia Rumiantceva, and Valeria Efimova. "Weak Segmentation and Unsupervised Evaluation: Application to Froth Flotation Images." In 20th International Conference on Computer Vision Theory and Applications. SCITEPRESS - Science and Technology Publications, 2025. https://doi.org/10.5220/0013181100003912.

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Galas, Jacek, Dariusz Litwin, Michał Kozielski, et al. "Flotation froth content estimation on the basis of a machine learning process." In 23rd Slovak-Czech-Polish Optical Conference on Wave and Quantum Aspects of Contemporary Optics, edited by Ivana Lettrichová, Dušan Pudiš, and Daniel Jandura. SPIE, 2025. https://doi.org/10.1117/12.3055202.

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Luo, Jin, Ying Fan, and Hu Zhang. "Binocular Camera Synchronization Calibration Based on Composite Image Correction for Froth Flotation." In 2024 8th Asian Conference on Artificial Intelligence Technology (ACAIT). IEEE, 2024. https://doi.org/10.1109/acait63902.2024.11021939.

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Gu, Wentao, Degang Xu, and Guanzheng Tan. "Unsupervised Domain Adaptation Image Segmentation for Froth Flotation Process Based on Appearance Generative - Adversarial Adaptation Networks." In 2024 China Automation Congress (CAC). IEEE, 2024. https://doi.org/10.1109/cac63892.2024.10865063.

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Marco, Surracco, and Tilocca Maria Caterina. "FLOTATION AND MAGNETIC SEPARATION PROCESSES FOR A MINERAL OF WOLLASTONITE." In 24th SGEM International Multidisciplinary Scientific GeoConference 24. STEF92 Technology, 2024. https://doi.org/10.5593/sgem2024/1.1/s04.56.

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This paper presents the results of laboratory processing tests conducted to explore the potential for beneficiation of a wollastonite mineral (calcium metasilicate, CaSiO3). The ore studied comes from a mineralized body located in the southern part of Sardinia (Italy), which has been studied in the past with geological surveys and sampling. In the investigated area the mineralization was very irregular. The encasing rocks consist of schist and the mineralized body is composed of wollastonite associated with limestone, garnets and silica. The sample used for treatment tests was taken from this
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Dong, Xianfa, and Xuezhong Wang. "Online Microscopic Imaging Combined with Machine Learning Image Processing for Online Monitoring of Mineral Froth Flotation Process." In 2024 8th International Conference on Electrical, Mechanical and Computer Engineering (ICEMCE). IEEE, 2024. https://doi.org/10.1109/icemce64157.2024.10862198.

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Cai, Yaoyi, Degang Xu, Jing Ouyang, Pengfei Yin, and Zuolei Cai. "Quantitative analysis of antimony sulfide in the froth layer during antimony flotation process based on Raman spectroscopy combined with a LW-PLS model." In 2024 43rd Chinese Control Conference (CCC). IEEE, 2024. http://dx.doi.org/10.23919/ccc63176.2024.10662457.

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Rapporti di organizzazioni sul tema "Froth flotation"

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Skone, Timothy J. Froth Flotation. Office of Scientific and Technical Information (OSTI), 2014. http://dx.doi.org/10.2172/1509061.

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Shirey, G. A., and R. D. Stoessner. Air-Sparged Hydrocyclone/Advanced Froth Flotation fine coal cleaning. Office of Scientific and Technical Information (OSTI), 1988. http://dx.doi.org/10.2172/5727527.

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Ferris, D. D., J. R. Bencho, and E. R. Torak. Engineering development of advanced froth flotation. Volume 2, Final report. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/78560.

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Author, Not Given. Engineering development of advanced physical fine coal cleaning technologies: Froth flotation. Office of Scientific and Technical Information (OSTI), 1992. http://dx.doi.org/10.2172/6782789.

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Author, Not Given. (Advanced froth flotation techniques): Quarterly technical progress report No. 1, September 1, 1988--November 30, 1988. Office of Scientific and Technical Information (OSTI), 1988. http://dx.doi.org/10.2172/6245259.

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Honaker, R. Q., and M. K. Mohanty. A modified release analysis procedure using advanced froth flotation mechanisms. Technical report, September 1--November 30, 1995. Office of Scientific and Technical Information (OSTI), 1995. http://dx.doi.org/10.2172/257326.

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Honaker, R. Q. ,. Mohanty, M. K. A modified release analysis procedure using advanced froth flotation mechanisms: Technical report, March 1, 1996-May 31, 1996. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/469647.

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Honaker, R. Q., and M. K. Mohanty. A modified release analysis procedure using advanced froth flotation mechanisms. Final technical report, September 1, 1995--August 31, 1996. Office of Scientific and Technical Information (OSTI), 1997. http://dx.doi.org/10.2172/475631.

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Harrison, K. E., D. D. Ferris, R. M. Kosky, et al. Controlled comparison of advanced froth flotation process technology and economic evaluations for maximizing BTU recovery and pyritic sulfur rejection. Office of Scientific and Technical Information (OSTI), 1990. http://dx.doi.org/10.2172/6778849.

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Author, Not Given. Engineering development of advanced physical fine coal cleaning technologies - froth flotation: Third quarterly report, April 1, 1989--June 30, 1989. Office of Scientific and Technical Information (OSTI), 1989. http://dx.doi.org/10.2172/6024370.

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