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Froth flotation is influenced by several operating factors. The most important of these is pH. Interaction with collector and formation of hydrophobic film at a mineral occurs within certain pH range. In the case of sulfide minerals, at pH above a certain value, called critical pH, the collector uptake does not occur and the mineral ceases to ...
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Froth flotation was developed at the Broken Hill mine, Australia, a century ago with the flo-tation of the common sulfide mineral, sphalerite. With this development, billions of tons of worthless rock containing a variety of valuable metals became
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This invention is directed to the use of non-sulfur containing compounds as collectors in the froth flotation of certain mineral sulfide and metallic compounds. These non-sulfur-containing compounds may be from natural sources, such as vegetable oils, or synthesized commercial sources. These non-sulfide collectors can be used singularly, in combinations, and in mixtures with known commercial ...
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th The technology of froth flotation, invented in the early 20 century was first used for the concentration of sulfide minerals. Since then it has been applied for the processing of many nonsulfide ores as weIl, including oxides, carbonates, silicates, soluble minerals like halite and sylvite and energy minerals like coal and bitumen.
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US4081363A US05/582,040 US58204075A US4081363A US 4081363 A US4081363 A US 4081363A US 58204075 A US58204075 A US 58204075A US 4081363 A US4081363 A US 4081363A Authority US United States Prior art keywords mineral partial ester flotation froth flotation collector Prior art date 1975-05-29 Legal status (The legal status is an assumption and is not a legal conclusion.
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Oct 15, 2002 In froth flotation processes in which it is desirable to selectively collect copper sulfide minerals and selectively reject iron sulfide minerals such as pyrite and pyrrhotite, as well as other gangue sulfides, the collector is preferably used in amounts of from about 0.01 lb./ton to about 5 lbs./ton of ore in the slurry.
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Initially, Denver flotation cells used in the mineral industry were installed in paper mills. These cells are open, rectangular vats, with mechanical removal of flotation froth by a rotating paddle and mechanical mixing of air and pulp suspension at the bottom. However, these cells are not currently in use.
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The effect of water quality on flotation is a common issue when designing and when operating concentrators. Liu et al. (2013) reviewed existing studies on water quality variation in flotation and developed a framework and analysis around three aspects: causes of water quality variation, conseque
Read MoreFroth flotation was developed at the Broken Hill mine, Australia, a century ago with the flo-tation of the common sulfide mineral, sphalerite. With this development, billions of tons of worthless rock containing a variety of valuable metals became
Read More
FROTH FLOTATION : RECENT TRENDS @IIME, JAMSHEDPUR, 1998; pp. 18-41 Flotation of Sulphide Ores - HZL Experience V.P. KOHAD Hindustan Zinc Ltd., Zawar Mines, Udaipur - 313 901 ABSTRACT Flotation process, patented in the year 1906, was originally developed for mineral industry to recover values from high grade tailings of gravity separation plants.
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An improvement in the froth flotation separation of metallic sulfide mineral ores, particularly those ores bearing copper and molybdenum, in which a mercaptan collector is used in an earlier primary flotation stage, the improvement comprising the addition of activated carbon to achieve deactivation of the mercaptan collector prior to the component mineral separation stage, thereby providing ...
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The selectivity of froth flotation for specific sulfide minerals is dependent upon surfactant, slurry pH, and surface interactions with dissolved ions. Fuerstenau et al. (2007) present a ...
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sulfides flotation performance. Introduction Froth flotation takes advantage of a minerals surface properties as a means of separating valuable minerals from non-valuable gangue. When air is introduced into the mineral slurry, the hydrophobic particles (most often valuables) attach to the air bubbles and rise
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What is claimed is: 1. In the process of froth flotation concentration of a sulfide mineral which minimizes the collection of slimes and in which an aqueous pulp of an ore containing such mineral is subjected to a flotation operation to produce a final high recovery of such mineral in a flotation concentrate, the improvement comprising carrying out said flotation with a polyglycerol added ...
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th The technology of froth flotation, invented in the early 20 century was first used for the concentration of sulfide minerals. Since then it has been applied for the processing of many nonsulfide ores as weIl, including oxides, carbonates, silicates, soluble minerals like halite and sylvite and energy minerals
Read More
Froth flotation and mineral processing is one of the most widely used processes, which occupies a dominant position in various mineral processing processes and can be used for processing various non-ferrous metals, rare metals and non-metallic minerals. ... Froth flotation of sulfide
Read MoreOct 15, 2002 In froth flotation processes in which it is desirable to selectively collect copper sulfide minerals and selectively reject iron sulfide minerals such as pyrite and pyrrhotite, as well as other gangue sulfides, the collector is preferably used in amounts of from about 0.01 lb./ton to about 5 lbs./ton of ore in the slurry.
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Froth Flotation machine plays an indispensable role in the mineral beneficiation process, flotation is susceptible to a number of factors during the process, including grinding fineness, slurry concentration, pulp pH, pharmaceutical system, aeration and agitation, flotation
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Sulfide minerals are a major source of metals; however, certain sulfide minerals, such as pyrite and pyrrhotite, are less desirable. Froth flotation is a commonly used separation technique, which requires the use of several reagents to float and depress different sulfide minerals.
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Copper sulfide minerals are separated from other gangue minerals by a flotation method. Flotation utilizes the surface wettability property evaluated by a contact angle degree. Law and Zhao [ 1 ] demonstrated that the tangential angle at liquid-solid-air interface can quantitatively describe the wetting of a solid surface by a liquid.
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Gold flotation. The Froth Flotation Method is means separating minerals according to their different physical and chemical properties. According to classification, the flotability of gold and silver minerals is included in the first category of natural and non-ferrous heavy metal sulfides, characterized by low surface wettability and easy flotation, which can be flotation
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Dec 22, 2020 A single sulfide ore is mostly processed by forth flotation, and the whole process includes crushing, grinding, classification, and forth flotation. Under the appropriate grinding fineness and agent system, from the raw ore with a Cu content of 0.77%, a concentrate with a Cu grade of 23.86% can be obtained, and the recovery rate is 95.24%.
Read Moresulfides flotation performance. Introduction Froth flotation takes advantage of a minerals surface properties as a means of separating valuable minerals from non-valuable gangue. When air is introduced into the mineral slurry, the hydrophobic particles (most often valuables) attach to the air bubbles and rise
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Froth Flotation Improvement by Plasma Pretreatment of Sulfide Minerals Inauguraldissertation zur Erlangung des akademischen Grades eines doctor rerum naturalium (Dr. rer. nat.) an der Mathematisch-Naturwissenschaftlichen Fakultät der Ernst-Moritz-Arndt-Universität Greifswald vorgelegt von: Frank May geboren am 23. April 1982 in Wolgast ...
Read MoreGold flotation. The Froth Flotation Method is means separating minerals according to their different physical and chemical properties. According to classification, the flotability of gold and silver minerals is included in the first category of natural and non-ferrous heavy metal sulfides, characterized by low surface wettability and easy flotation, which can be flotation
Read MoreSep 28, 2011 Objective of this experiment was To gain experience in sulphide flotation To investigate some effects of chemical environment on the flotation of sulphide minerals, the effect of pH on pyrite in particular. We were given pyrite ore and had to grind the ore to minus 250 microns and prepare four equal samples of approximately 0.5
Read MoreWhat is claimed is: 1. In the process of froth flotation concentration of a sulfide mineral which minimizes the collection of slimes and in which an aqueous pulp of an ore containing such mineral is subjected to a flotation operation to produce a final high recovery of such mineral in a flotation concentrate, the improvement comprising carrying out said flotation with a polyglycerol added ...
Read MoreFroth flotation and mineral processing is one of the most widely used processes, which occupies a dominant position in various mineral processing processes and can be used for processing various non-ferrous metals, rare metals and non-metallic minerals. ... Froth flotation of sulfide
Read MoreCopper sulfide minerals are separated from other gangue minerals by a flotation method. Flotation utilizes the surface wettability property evaluated by a contact angle degree. Law and Zhao [ 1 ] demonstrated that the tangential angle at liquid-solid-air interface can quantitatively describe the wetting of a solid surface by a liquid.
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Handbook of Flotation Reagents Chemistry, Theory and Practice: Flotation of Sulfide Ores. Serkan Gökçen. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 36 Full PDFs related to this paper. READ PAPER.
Read MoreFroth Flotation machine plays an indispensable role in the mineral beneficiation process, flotation is susceptible to a number of factors during the process, including grinding fineness, slurry concentration, pulp pH, pharmaceutical system, aeration and agitation, flotation
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At present, the commonly used beneficiation processes include gravity separation, magnetic separation, flotation and so on. The chemical beneficiation process such as flotation process is more complicated than the physical beneficiation process su...
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Froth flotation is a commonly used method for efficient separation of different minerals from finely grinded sulfide ore. The mineral level information is an important tool for the optimization of flotation process parameters as it is uneconomical to make mineral
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As for zinc, Figure 10 shows that, at 50 g/ton of chitosan, the recovery of zinc in the froth increased by 40% compared to NaCN at its optimum dosage which is undesirable in the differential flotation of sulfide minerals where lead and copper sulfides are floated in the first flotation stages while sphalerite is depressed. Results also revealed ...
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The lead-zinc sulfide is often associated with a variety of valuable components, such as lead, zinc, copper, sulfur and other useful minerals, whose floatability is obviously different, which determines the different froth flotation process of lead and zinc sulfide ores. The common froth flotation process of sulfide ore mainly includes priority ...
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Feb 04, 2004 In froth flotation processes in which it is desirable to selectively collect copper sulfide minerals and selectively reject iron sulfide minerals such as pyrite and pyrrhotite, as well as other gangue sulfides, the collector is preferably used in amounts of from about 0.01 lb./ton to about 5 lbs./ton of ore in the slurry.
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