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chemistry of pyrite depression in flotation

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The Chemistry of Pyrite Flotation and Depression

Flotation of pyrite has long been employed in gold ore processing, and it appears that pyrite flotation from coal may become important in the future (1). It is probably a direct consequence of this relative ease of separation, plus the low economic value of pyrite, that detailed investigations on the chemistry of its flotation and depression are relatively limited.

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chemistry of pyrite depression in flotation

chemistry of pyrite depression in flotation. chemistry of pyrite depression in flotation Effect of redox conditions and copper ions on pyrite . Redox conditions and stone reactions involved in depression mechanisms of pyrite by MBS or sodium sulfite in seawater are investigated and discussed based on the acidifying effect of MBS oxidation of sulfite ions by dissolved oxygen and the role of ...

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chemistry of pyrite depression in flotation

chemistry of pyrite depression in flotation. the and of are interpreted in terms of mixed-potential mechanisms. previous ... a.i. vogeltextbook of practical organic . Get Price. Relate Product. Get Quick Quote. ... depression of pyrite in seawater flotation by guar gum - mdpi.

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The depression of pyrite in selective flotation by ...

01-10-2016· Janetski et al. (1977) studied the depression of pyrite flotation from an electrochemical viewpoint and found that an increase in pH facilitated pyrite oxidation. It was suggested that oxidation of pyrite replaced oxidation of xanthate as the dominant anodic process. Thus, the formation of dixanthogen is inhibited at high pH.

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Pyrite Depression in Copper Flotation

08-10-2015· In froth flotation, depressing pyrite or any metal is impossible if minerals are locked. Effective grinds-liberation and good pH targeting will let you effectively depress pyrite. Generally, the higher you raise the pH, the less floatable sulphides become. pH control and pyrite depression/rejection in a poly-metallic environment is different.

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The Chemistry of Pyrite Flotation and Depression

Flotation of pyrite has long been employed in gold ore processing, and it appears that pyrite flotation from coal may become important in the future (1). It is probably a direct consequence of this relative ease of separation, plus the low economic value of pyrite, that detailed investigations on the chemistry of its flotation and depression are relatively limited.

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Chemistry Of Pyrite Depression In Flotation

Chemistry Of Pyrite Depression In Flotation The depression of pyrite by lime is attributed to the surface formation of CaOH 2 CaSO 4 and FeOH 3 as determined by XPS analysis Xanthate flotation tests show that oxalic acid and other organic acids as well as sulphuric acid and other inorganic acids and their salts can restore xanthate flotation of pyrite after depression by lime.

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chemistry of pyrite depression in flotation

24-12-2020· Pyrite Depression in Copper Flotation. The Pyrite Depression in a Copper Only Flotation circuit is simple enough. If your froth flotation system only tries to recover chalcopyrite-copper, you need to bring the plant’s pH up to the other side (right side) of the PYRITE curve.

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The role of sodium metabisulphite in depressing pyrite in ...

01-10-2019· Therefore, the depression effect of MBS on pyrite flotation is more likely through the interference of copper activation on pyrite surface, which weakens the interaction between collectors and pyrite surface. 3.1.2. The effect of MBS dosing points on pyrite depression

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chemistry of pyrite depression in flotation

The depression of pyrite in selective flotation by . The depression of pyrite flotation by cyanide may result from one or more of the following mechanisms: (1) Cyanide may depress pyrite flotation by replacing xanthate ions on pyrite surface, similar to hydroxyl ions …

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The chemistry of flotation activation and depression of ...

Flotation studies demonstrated that freshly ground arsenopyrite and pyrite are non-floatable in the absence of xanthate as a collector or strong iron-complexing agent: EDTA (hydrophilic). Good flotation was observed for both minerals with EDTA or ethyl xanthate. The floatability depends strongly on the pH value and concentration.

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(PDF) Depression of Pyrite in Seawater Flotation by Guar Gum

The application of guar gum for pyrite depression in seawater flotation was assessed through microflotation tests, Focused Beam Reflectance Measurements (FBRM), and Particle Vision Measurements (PVM).

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2000-Surface chemistry of activation of lime-depressed ...

AbstractThe depression of pyrite by lime is attributed to the surface formation of Ca(OH) 2, CaSO 4 and Fe(OH) 3 as determined by XPS analysis. Xanthate flotation tests show that oxalic acid and other organic acids, as well as sulphuric acid and other inorganic acids and their salts can restore xanthate flotation of pyrite after depression by lime.

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Sodium Metabisulfite MBS for pH Control and Pyrite ...

07-08-2013· Below is a graph showing pH VS pyrite recovery at various collector addition rates. It is also used to prevent flotation of sphalerite by copper activation in the presence of Tennantite/Covellite in the ore. For pyrite flotation, you see maximum iron/pyrite depression using Sodium Metabisulfite/MBS takes effect at around pH 6.

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The depression of quartz in sulphide flotation

hence depression of the gangue minerals in the flotation of sulphides from an artificial pyrite-quartz mixture. Flotation . of . any given mineral is intimately bound up with the degree of dispersion or flocculation of that mineral in the pulp and it may be aaid(l4) that flotation is not (14) Wark, I.i. Principles of Flotation.

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The Chemistry of Pyrite Flotation and Depression

Flotation of pyrite has long been employed in gold ore processing, and it appears that pyrite flotation from coal may become important in the future (1). It is probably a direct consequence of this relative ease of separation, plus the low economic value of pyrite, that detailed investigations on the chemistry of its flotation and depression are relatively limited.

Get Quote

Chemistry Of Pyrite Depression In Flotation

Chemistry Of Pyrite Depression In Flotation The depression of pyrite by lime is attributed to the surface formation of CaOH 2 CaSO 4 and FeOH 3 as determined by XPS analysis Xanthate flotation tests show that oxalic acid and other organic acids as well as sulphuric acid and other inorganic acids and their salts can restore xanthate flotation of pyrite after depression by lime.

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chemistry of pyrite depression in flotation

The depression of copper-activated pyrite in flotation by biopolymers with different compositions. Minerals Engineering, 96-97, 113-122. doi: 10.1016/j.mineng.2016.06.011. The depression of pyrite in selective flotation by different reagent systems - a Literature review. Mu, Yufan, Peng, Yongjun and Lauten, Rolf A. (2016). Get Price

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chemistry of pyrite depression in flotation

Surface chemistry of activation of limedepressed pyrite in flotation ... The depression of pyrite by lime is attributed to the surface formation of Ca ... Get Price; Depression of pyrite in porphyry copper … Depression of pyrite in porphyry ... Limited depression of pyrite with lime Flotation tests on plant rougher con (60% Cp, 18% Py) (Ore 1 ...

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chemistry of pyrite depression in flotation

24-12-2020· Pyrite Depression in Copper Flotation. The Pyrite Depression in a Copper Only Flotation circuit is simple enough. If your froth flotation system only tries to recover chalcopyrite-copper, you need to bring the plant’s pH up to the other side (right side) of the PYRITE curve.

Get Quote

The chemistry of flotation activation and depression of ...

Flotation studies demonstrated that freshly ground arsenopyrite and pyrite are non-floatable in the absence of xanthate as a collector or strong iron-complexing agent: EDTA (hydrophilic). Good flotation was observed for both minerals with EDTA or ethyl xanthate. The floatability depends strongly on the pH value and concentration.

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(PDF) Depression of Pyrite in Seawater Flotation by Guar Gum

The application of guar gum for pyrite depression in seawater flotation was assessed through microflotation tests, Focused Beam Reflectance Measurements (FBRM), and Particle Vision Measurements (PVM).

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Pyrite Depression In Copper Flotation

Pyrite Depression In Copper Flotation. A review of the considerable, but often contradictory, literature examining the specific surface reactions associated with copper adsorption onto the common metal sulfide minerals sphalerite, (zn,fe)s, and pyrite (fes(2)), and the effect of the co-location of the two minerals is presented. copper a ….

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chemistry of pyrite depression in flotation

Mechanisms Of Phosphate Depression Flotation. phosphate ores--Control of process water chemistry and depression of "Depression of Pyrite Flotation by Get Price MINERAL DRESSING Quantum–Mechanics of Pyrite formation also favor pyrite flotation but complicate pyrite depression in an alkaline medium.

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The depression of quartz in sulphide flotation

hence depression of the gangue minerals in the flotation of sulphides from an artificial pyrite-quartz mixture. Flotation . of . any given mineral is intimately bound up with the degree of dispersion or flocculation of that mineral in the pulp and it may be aaid(l4) that flotation is not (14) Wark, I.i. Principles of Flotation.

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