separating flotation copper from pyrite

Heterocoagulation of chalcopyrite and pyrite minerals in ...

Heterocoagulation between various fine mineral particles contained within a mineral suspension with different structural and surface chemistry can interfere with the ability of the flotation processes to selectively separate the minerals involved. This paper examines the interactions between chalcopyrite (a copper mineral) and pyrite (an iron ...

Removal of Copper(II) from Aqueous Solutions by …

2018-2-18 · Removal of Copper(II) from Aqueous Solutions by Flotation 177 the absence of copper(II) ions. After complete flotation, the LS-containing float was filtered through a G 5 sintered-glass filter (porosity 1– 1.5 m) and dried to constant weight in an oven at 125º C. The percentage floatability of LS (%F) was calculated from: %F=C f /C i ×100 ...

Pyrite depressant useful in flotation separation ...

1997-6-17 · We claim: 1. A process for separating pyrite from sulfide ores and coal which comprises subjecting said sulfide ore or coal containing said pyrite to flotation in the presence of a depressant for pyrite, said depressant comprises about 0.125 to 1.250 pounds per ton of 2-S thiouronium-ethane sulfonate.

Biodepression of Copper-Activated Pyrite with ...

2021-9-25 · anhydrous (CuSO4) with a molecular weight 159.61g/mol was used to activate pyrite with copper. First, 1g of pyrite was contacted with 18.5mL of water and 1mL of CuSO4 solution with a concentration of 0.5 10 3 M or 1 10 3 M for 5min. Subsequently, 0.5mL of bacterial suspension with a concentration of 1.2 1010 bacteria/mL was added

Separation of chalcopyrite and pyrite from a copper ...

In order to separate chalcopyrite from pyrite in low pulp pH, ammonium humate (AH) was singled out as the effective regulator. The depression mechanism of AH on the flotation of pyrite was proved by FTIR spectrum and XPS spectrum, demonstrating that there was a chemical adsorption between AH and pyrite.

Separation of chalcopyrite and pyrite from a copper ...

2018-9-1 · 1. Introduction. Copper tailings generated from engineering process of copper-containing mine constitute a large proportion of mine wastes, which were estimated to be more than 30 million tons produced worldwide pper tailings can serve as the source materials for the residual minerals, such as pyrite, chalcopyrite, and chalcocite,,, sides, the discarding of copper …

Biodepression of Copper-Activated Pyrite with ...

Acidithiobacillus ferrooxidans has been shown to be a good depressant of pyrite in freshwater and seawater flotation. However, the effect of these bacteria over copper-activated pyrite has not been studied. At the industrial scale, the activation of pyrite with copper is a common process that occurs because Cu2+ ions, released from other minerals, react with pyrite.

Chapter 7 Electrochemical Control of Pyrite-Activation by ...

2021-5-25 · flotation plants is to reject pyrite to produce a marketable grade concentrate. More recently, clean air regulations mandate pyrite removal from smelter feeds to reduce the emission of acid rain precursor. Pyrite, like a number of other sulfides, may be activated for more efficient flotation by interaction with dissolved heavy metals ions, e.g ...

Research of Laws Pyrite-Bearing Slag Flotation of Copper ...

2020-4-20 · pyrite copper and copper-zinc ores. Flotation technology is a universal method of enrichment of natural raw materials (minerals) and man-made (mining and metallurgical waste) origin. It contains non-ferrous metals, and allows you to extract copper from free-milling crystallized copper slag aggregates [1, 2]. Flotation copper ground to 0.074 mm ...

Selectively Depress Copper-Activated Pyrite in Copper ...

2021-1-26 · Pyrite depression in the flotation of copper ores is difficult due to the activation of Cu 2+ ions on pyrite surface. In this study, the radical chain reaction involving the redox cycling of Cu(I/II) induced by sodium metabisulphite (MBS) was exploited to selectively depress the flotation of copper-activated pyrite at pH 8.0.

Optimization of a Copper/Molybdenum Flotation Circuit …

2020-6-16 · Optimization of a Copper/Molybdenum Flotation Circuit by Depressing Pyrite from the Rougher Flotation Stage Using Different Scheme of Reagents A thesis submitted in partial fulfillment of the requirements for the degree of Master Of Science in Metallurgical Engineering by Wander A. Valderrama Dr. Carl C. Nesbitt/Thesis Advisor May 2020

The effect of degree of liberation on copper recovery from ...

2020-10-1 · Flotation of grinding products with 55, 60, 65, 70, and 75% of grain size <74 μm, was conducted at the pulp''s pH values of 10 and 12. Higher copper recovery was obtained in concentrates at pH 10, but with lower copper grades, approximately 2%. Copper recovery in concentrates at pH 12 was slightly less, but copper grades were much higher.

The Effect of Regrinding Chemistry and Particle Breakage ...

2019-10-9 · Effect of regrinding conditions on pyrite flotation in the presence of copper ions. International Journal of Mineral Processing 125: 129-136. Chen, X., Peng, Y. and Bradshaw, D., 2014. The separation of chalcopyrite and chalcocite from pyrite in cleaner flotation after regrinding. Minerals Engineering 58: 64-72.

Extraction of Copper from Copper pyrite | Grade 12 …

Extraction of Copper from Copper pyrite. The principal ore of copper is copper pyrite and copper is extracted from this ore. The different steps in extraction of copper are: The ore obtained from mines are broken down into small piece by …

A review of the fundamental studies of the copper ...

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 …

Selective separation of galena and sphalerite from pyrite ...

2021-9-23 · inorganic pyrite depressants and also specific collectors were used in the appropriate combination using the mixture design method. After achieving an optimum flotation test condition, the effect of auxiliary collector types and pH were evaluated on the flotation of galena, pyrite and sphalerite. 2. Materials and Methods 2.1.

Separation efficiency improvement of a low grade …

2017-12-21 · The recovery of gold-containing pyrite to the copper concentrate is encouraged to achieve a higher total gold recovery provided that a saleable copper concentrate grade is still produced. Mineralogical diagnosis of feed and product streams from the copper flotation circuit have shown that the copper bearing minerals are well liberated

THERMOMECHANICAL ASPECT OF SELECTIVE …

2016-1-10 · ration of copper and zinc minerals from pyrite [2]. However, with selective reagents in copper flotation, amount of sphaler-ite and fine-ground pyrite grows in the zinc flotation cycle, which mutilates flotation process. It is known that zinc cycle of copper–zinc ore flotation uses xanthate modifications that are not selective relative to pyrite.

CHAPTER 7 FLOTATION OF SULPHIDE MINERALS

2015-10-19 · Chemisorption of sulphide ions on pyrite probably occurs similarly to sulphite4 ion on pyrite. Flotation of Chalcopyrite (CuFeS 2) Complete flotation of chalcopyrite is possible from pH 3 to pH 12 with ethyl xanthate. Both electrochemical oxidation of xanthate to dixanthogen as well as chemisorption of

A study on the effect of active pyrite on flotation of ...

2018-6-27 · separate the copper-activated from pyrite along with isobutyl xanthate (Boulton et al., 2001). Polyacrylamide 2001 Using the polyacrylamide leads to depressing the pyrite during the flotation. 3 The special mill was used for controlling the pH for separating chalcopyrite from pyrite (Peng et al., 2003). Chromium grinding medium

The Selective Flotation of Arsenopyrite from Pyrite

2016-11-28 · pyrite, giving rise to a higher selectivity compared to the blank test (no MAA present). 3.4. Copper sulphate addition The activator copper sulphate was added at a dosage of 0.05 kg/t to test if the flotation characteristics of py-rite could be improved resulting in greater recovery. To determine whether the activating effect of the copper

Separation of chalcopyrite and pyrite from a copper ...

In order to separate chalcopyrite from pyrite in low pulp pH, ammonium humate (AH) was singled out as the effective regulator. The depression mechanism of AH on the flotation of pyrite was proved by FTIR spectrum and XPS spectrum, demonstrating that there was a chemical adsorption between AH and pyrite. By Response Surface Methodology (RSM ...

Pyrite Flotation Separation and Encapsulation: A ...

2021-1-28 · Pyrite flotation separation and encapsulation in tailings dams is proposed as a viable way to chemically stabilize tailings. Characterization of potential acid mine generation in tailings led to an innovative process in which acid-generating pyrite is separated by flotation from the coarse tailings and incorporated into the slime zone.

The collecting performance and interaction mechanism …

2021-3-17 · 5.5; thus it, is impossible to separate these two minerals. Flotation tests showed that at pH=10 thionocarbamate had good selective flotation of chalcopyrite from pyrite [22]. It was revealed that pulp oxidation potential (Eh) and zinc sulfate played an important role in copper-activated pyrite recovery. At

SEPARATION OF COPPER MINERALS FROM PYRITE

A process of separating copper minerals from pyrite wherein a flotation concentrate containing copper minerals and pyrite is reground in the presence of lime and subsequently conditioned at a pH of 12.0 or more for a predetermined period sufficient to depress the pyrite, with optional additions of sulf-hydryl collector, cyanide and dispersing agent, and the conditioned pulp is …

Copper and Pyrite Separation by Selective and Sequential ...

2016-4-13 · A copper-pyrite mill in Canada uses the 12-cell No. 21 "Sub-A" Flotation Machine, shown above, for roughing, and a 2-cell No. 21 "Sub-A" Flotation Machine for cleaning to produce a fairly coarse pyrite …

Effect of Ultrasonic Pre-Treatment and Aeration on ...

2021-8-30 · separation of chalcopyrite from pyrite was investigated at different amounts of potassium ethyl xanthate (KEX), as a collector, and pH values. Artificially-mixed samples of chalcopyrite and pyrite were subjected to flotation studies to understand the effect of aeration with or without ultrasonic treatment on the flotation behavior of the minerals.

SEPARATION OF COPPER MINERALS FROM PYRITE

Copper and Pyrite Separation by Selective and Sequential Flotation

COPPER EXTRACTION FROM COPPER SMELTER SLAG …

2017-6-9 · found that a great effect on copper leaching has the pyrite/flotation tailings: ratio. The best results were achieved by sulphating of 5.00 g slag with 2.00 g of pyrite or 3.00 g of tailings. Keywords: smelter slag, roasting, pyrite, leaching * University in Belgrade, Technical Faculty in Bor, VJ 12, 19210 Bor, Serbia

Method of floatation of copper-zinc-pyrite ore (versions)

1. Method of flotation of copper-zinc-pyrite ore, including grinding in an alkaline medium, air conditioning with reagents - collectors and frothers, collective copper-zinc flotation to produce collective concentrate containing copper minerals and natural-activated sphalerite, and tails, characterized in that as the collector used is supplied in the following sequence composition …

Study of Flotation Parameters for Copper Recovery from ...

2020-4-1 · grained pyrite, performs interstitial 100-500 microns by size [16]. Intergrowth of pyrite, sphalerite, tennantite and other copper sulphides, difference in their activity and size create the considerable problems in implementation of selective flotation, obtaining conditional copper and zinc concentrates.

An Electrochemical Study of Surface Oxidation and ...

2018-5-8 · pyrite, polysulfide, and elemental sulfur are hydrophobic. The influence of pyrite oxidation on flotation of other valuable sulfide minerals is an important topic for the mineral industry and has attracted many studies [34-37]. Owusu et al. [4] recently