pyrite flotation depression

Adsorption mechanism of a new depressant on pyrite ...

Compared with guar gum, PAM, dextrin, CMC, and SHMP, GM exhibited the best performance in the depression of pyrite flotation but had a negligible influence on the chalcopyrite flotation. An excellent separation of chalcopyrite and pyrite was achieved at weakly alkaline (pH 8), for which the flotation recovery of chalcopyrite was 86.11% and that of pyrite was only 13.85%.

Pyrite Depression in Copper Flotation

08-10-2015· 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. The more flotation collector you have on, the higher you will need to increase that pH for effective pyrite ...

Pyrite Depression - Froth Flotation (Sulphide & Oxide ...

Pyrite floats at very low pH or gets entrapped during flotation. Column flotation will give good results for such problems. It has forth washing system where entrapped minerals are separated, to get very clean concentrate. 4 years of R&D in RDM proved to reduce silica from 7 to 3% in Zinc cleaning in column with very low pyrite.

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

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 …

The depression of pyrite in selective flotation by ...

The depression of pyrite in selective flotation by different reagent systems – A Literature review. Author links open overlay panel Yufan Mu a Yongjun Peng a Rolf A. Lauten b. Show more. ... Pyrite may float due to natural or self-induced hydrophobicity or collector-induced hydrophobicity.

Adsorption and depression mechanism of an eco-friendly ...

05-07-2021· The flotation recovery of chalcopyrite and pyrite in the absence and presence of the depressant PCA as a function of pH was shown in Fig. 3.From the results, it could be seen that the recoveries of chalcopyrite and pyrite were kept in a high level (more than 93.18%) in the pH range of 4.28–10.03 by using SBX alone.

The depression of pyrite in selective flotation by ...

01-10-2016· 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 (Wark and Cox, 1934, Prestidge et al., 1993).

A novel depressant for selective flotation separation of ...

01-09-2019· Based on the results of single mineral flotation, the flotation tests for mixed pyrite-pyrophyllite were conducted with different depressant (glucan, guar gum) to verify the selectivity of glucan, and the best results are shown in Table 1.Guar gum was one of the most widely used industrial depressants for hydrophobic gangue minerals in flotation of sulfide ores [11,12,34].

chemistry of pyrite depression in flotation

depression of pyrite in seawater flotation by guar gum - mdpi. ... Get Price. pyrite depression by phosphates in coal flotation | springerlink. feb 1, 1998 — most of the organic tested showed little selectivity in . it was found that both orthophosphate and pyrophosphate ...

Depression of pyrite in the flotation of high pyrite low ...

01-01-2010· In this research work, selective depression of pyrite in the flotation of a low-grade lead–zinc ore containing 31% pyrite was investigated in the absence and presence of Acidithiobacillus ferrooxidans. Pyrite was significantly depressed with these bacteria using …