mineral flotation sulfide
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mineral flotation sulfide

Sulphide Flotation - an overview ScienceDirect Topics

Pentlandite is one of the major nickel – hosting sulfide minerals. In sulfide flotation, the recovery of pentlandite is often associated with the recovery of nickel. Different nickel recoveries have been observed from various ores (Heiskanen et al., 1991) and, in some cases, from different areas of the same deposit. Besides other factors, such as mineralogical variations in the ores, dissolution of minerals,

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CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

Sulphide minerals are floated by sulphydryl collectors (thio-componds) Adsorption of Sulphydryl Collectors: Adsorption of sulphydryl collectors may occur mainly by chemisorption at metal ion sites on

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(PDF) Sulfide Mineral Flotation Morgan Zhao -

These arguments suggest that the reasons for the floatability of sulfide minerals observed in the absence of collectors may vary from mineral to mineral. In most cases, the flotation behavior depends on the nature of the surface, and this might be readily altered by

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Principles and practice of sulphide mineral flotation ...

This paper presents both the fundamentals of sulphide mineral flotation and the practical aspects of sulphide ore flotation. The fundamental aspects of the flotation of sulphide minerals both in the absence and presence of thiol collectors are discussed in relation to their crystal structure, surface chemistry and electrochemical characteristics. Since the electrochemistry of the sulphide

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Lime use and functionality in sulphide mineral flotation ...

01/11/2019  The flotation response of sulphide minerals and their interactions with collectors (xanthates, dithiophosphates, thionocarbamates, and their derivates) is strongly pH dependent. Selective flotation, of one mineral over another, can thereby be achieved by varying the pulp pH. For example, chalcopyrite can be selectively floated from iron sulphides (pyrite, pyrrhotite) in a highly alkaline

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Sulfide mineral flotation Request PDF

The flotation of four copper sulfide minerals (chalcopyrite, chalcocite, bornite, covellite) and pyrite with xanthates shows that a minimum in the collector concentration necessary for flotation ...

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CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

sulphide minerals. Bornite (Cu 5 FeS 4) and covellite (CuS) and energite (Cu 3 AsS 4) are normally present in lesser quantities. The complete flotation of chalcocite is achieved between ph = 1 to ph = 10 with ethyl xanthate. The resulting hydrophobic species is CuX. 1. Hydroxyl as depressant (OH-)

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Sulfide mineral flotation Request PDF

The flotation of four copper sulfide minerals (chalcopyrite, chalcocite, bornite, covellite) and pyrite with xanthates shows that a minimum in the collector concentration necessary for flotation ...

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Electrochemistry of Flotation of Sulphide Minerals ...

"Electrochemistry of Flotation of Sulphide Minerals" systematically covers various electrochemical measurements, especially electrochemical corrosive methods, electrochemical equilibrium calculations, surface analysis, semiconductor energy band theory as well as molecular orbital theory. Behaviour and mechanism of collectorless and collector-induced flotation of sulphide minerals in various flotation

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Division of Sustainable Process Engineering Sulphide ...

Sandenbergh 2007) that galvanic interactions occur in every grinding media-sulphide mineral system, which affects the subsequent flotation properties of the sulphide minerals through unselective surface coatings by iron oxidation products. Recently it was revealed that H 2O 2

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Flotation of Sulfide Minerals - sinonine.blogspot

In mineral processing plant, Sulfide minerals are semiconductors, enabling electrochemical phenomena to occur in these systems. These minerals, therefore, develop a potential, termed the rest potential, when placed in an aqueous solution. Rest potentials of various sulfide minerals have been established under flotation conditions, as Table 1 shows for a solution containing 6.25 × 10–4 mol/L ...

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Mining Industry Copper Sulfide Ore and Flotation

The floatability of common copper sulfide minerals is reduced in the following order: chalcopyrite > covellite > bornite > chalcopyrite. (4) The floatability of copper sulfide minerals is also affected by factors such as crystal grain size, grain size, etc. fine grain is not easy to float.

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Flotation Behavior of Complex Sulfide Ores in the

In sulfide mineral flotation, Polymers have been used as potential candidates to replace hazardous reagents. Polyacrylamide polymers (PAMs) with different functional groups exhibited depressing ability for ferrous sulfide minerals such as pyrite . Recently a biodegradable polymer chitosan has also shown a promising depressing ability for ferrous sulfide minerals. Chitosan has a lot of advantages over

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Effect of pH on pulp potential and sulphide mineral

The floatability of sulfide minerals can be affected by the redox conditions on particle surface and in the pulp and can be used as one of the parameters for the separation of sulfide minerals. In ...

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Slurry Treatment and Flotation Reagent Selection of Non ...

In addition, before flotation, non-sulfide minerals usually need a more complex pulp preparation process, which includes scrubbing, desliming, heating and mixing slurry, high concentration stirring, etc. Among them, desliming is a common and critical operation. The fine mud produced in non-sulfurized minerals will not only consume flotation reagents, but also adhere to the surface of coarse particles, interfering with

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List Sulphide Minerals - Mineral Processing Metallurgy

17/03/2017  The sulphide minerals are compounds of the metals with sulphur. Nearly all these minerals have a metallic luster, i.e., the peculiar shining appearance of metals, such as gold, silver, copper, lead, tin, iron, etc. They are all heavy minerals and nearly all are of economic importance. Iron Pyrites or Pyrite. FeS2. — Color, pale brass-yellow; fine powder (streak), greenish black or brownish

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Mining Industry Copper Sulfide Ore and Flotation

2 Main copper sulfide minerals and their floatability (1) Chalcopyrite (CuFeS2) Chalcopyrite (including Cu 34.57%) is the most common copper mineral in China’s copper mines,... (2) Chalcocite (Cu2S) The chalcocite is one of the most common associated copper minerals. It is brittle and easy to be... ...

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Investigation of Sulfide Mineral Flotation in High ...

Investigation of Sulfide Mineral Flotation in High Salinity Water. Direct Applicability to Industry: High concentration of soluble salts can cause gypsum crystallization of mineral surfaces and pipelines and reduce the selectivity and recovery of flotation. Restrictions in fresh water use and high concentrations of salt in used water have forced industry to look at alternative methods of ...

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US7461745B2 - Flotation of sulfide mineral species with ...

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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Flotation Behavior of Complex Sulfide Ores in the

Bulk flotation tests of sulfide mineral samples containing galena, chalcopyrite, pyrite, and sphalerite were carried out in laboratory scale Denver flotation cell to compare the depression capability of NaCN and chitosan polymer, separately. It was found that chitosan was effective mostly in depressing pyrite minerals. Chitosan depressed 5.6% more pyrite as compared to conventional depressants (NaCN) at

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Effect of pH on pulp potential and sulphide mineral

The floatability of sulfide minerals can be affected by the redox conditions on particle surface and in the pulp and can be used as one of the parameters for the separation of sulfide minerals. In...

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Flotation of sulfide minerals - Inspiration Consolidated ...

The efficiency of flotation of sulfide minerals is controlled by a number of variables, one of which is the particle size and configuration of the material being floated. In general, the greater the quantity of slime bearing constituents, the poorer the separation of minerals in gangue. In most primary copper deposits, the naturally occurring slimes and that produced by beneficiation are of ...

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Kinetic Studies of Sulfide Mineral Oxidation and Xanthate ...

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. Xanthate, a thiol collector, has gained immense usage in sulfide minerals flotation.

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Descriptor of catalytic activity of metal sulfides for ...

Froth flotation has been widely used to separate sulfide minerals from sulfide ores, where the oxygen reduction reaction (ORR) plays a significant role as the cathodic reaction. However, the intrinsic ORR mechanism over sulfide minerals and its effect on the flotation performance remain unclear. Herein, we explored the intrinsic ORR mechanism over metal sulfides through density functional theory (DFT)

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(PDF) Handbook of Flotation Reagents Chemistry,

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. Handbook of Flotation Reagents Chemistry, Theory and Practice: Flotation of Sulfide Ores . Download. Handbook of Flotation Reagents Chemistry, Theory and ...

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List Sulphide Minerals - Mineral Processing Metallurgy

17/03/2017  The sulphide minerals are compounds of the metals with sulphur. Nearly all these minerals have a metallic luster, i.e., the peculiar shining appearance of metals, such as gold, silver, copper, lead, tin, iron, etc. They are all heavy minerals and nearly all are of economic importance. Iron Pyrites or Pyrite. FeS2. — Color, pale brass-yellow; fine powder (streak), greenish black or brownish black; luster,

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