pyrite recovery circuit

pyrite recovery circuit

Pyrite-Gold Recovery in Copper Rougher Flotation Tailings

The pyrite recovery circuit (not discussed in this study) consists of a two cleaning stages, involving 5 and 3 SFRs respectively. It delivers the pyrite concentrate enriched in gold, which is subsequently dewatered and stocked for shipment, and the final tailing being disposed.

Development of a Pyrite Regrind Circuit at Telfer Gold ...

The recovery of pyrite at 5 min of flotation is 97.8%, and at 7 min of flotation the maximum estimated recovery of 99.1% is reached. In order to produce a concentrate with a pyrite grade closest to 90%, and a recovery above 90%, 3.5 min were selected for the recleaner flotation stage as the optimum flotation time. 3.3 Determination of the split ...

Pyrite-Gold Recovery in Copper Rougher Flotation Tailings

In 2018, Newmont Goldcorp completed the construction of the Pyrite Leach Plant ("PLP") at Peñasquito, which envisages leaching a pyrite concentrate from the zinc flotation circuit tails to recover gold and silver. The PLP is expected to recover approximately 40% of the gold and 48% of the silver currently reporting to the tailings.

Coupling mineralogy with physicochemical parameters in ...

unintentional pyrite flotation is undesirable in a Cu-Au ore flotation circuit due to the detrimental effect on Cu final grade. Therefore, in order to improve final concentrate grade, pyrite depression strategies (e.g. aeration, sulphite, cyanide addition, etc.) have been used over the years to minimise pyrite recovery.

Pyrite - Wikipedia

At industrial scale, the use of Aerofloat 7249 provided a 4.5% improved gold recovery at the Freeport Copper Mine (Hartati et al., 1997), while the addition of 3477 in the cleaner scavenger circuit improved the recovery of tarnished flaky gold at the Kemess Copper–Gold Mine in Canada (Chryssoulis et al., 2003b). 8.

pyrite flotation - inlineskateschool.nl

The recovery of pyrite at 5 min of flotation is 97.8%, and at 7 min of flotation the maximum estimated recovery of 99.1% is reached. In order to produce a concentrate with a pyrite grade closest to 90%, and a recovery above 90%, 3.5 min were selected for the recleaner flotation stage as the optimum flotation time. 3.3 Determination of the split ...

Recovery of pyrite from copper tailings by flotation ...

Flotation Circuit Characterization Docsharetips. Investigation of the reasons for copper and gold loss in the cleaner tail at ok tedi png 14 chapter 2 literature review also studied the effect of froth depth on pyrite recovery and provided similar mineral flotation circuits there is a tradeoff between concentrate grade and recovery

Application of Aeration to Complex Sulphide Ore and its ...

Flotation Circuit Characterization Docsharetips. Investigation of the reasons for copper and gold loss in the cleaner tail at ok tedi png 14 chapter 2 literature review also studied the effect of froth depth on pyrite recovery and provided similar mineral flotation circuits there is a tradeoff between concentrate grade and recovery

An Alternative Circuit for Chalcopyrite-Pyrite Ores with ...

X‐ray photoelectron spectroscopy (XPS) has been used to investigate the interaction of copper(II)‐containing aerated aqueous solution (pH 4–10) with pyrite (FeS 2) surfaces and its influence on subsequent ethyl xanthate adsorption from solution.Evidence is provided that Cu(II) ions can be adsorbed independent of pH, changing their oxidation state to Cu(I).

Underground achiever - CIM

In cleaning (bulk circuit), the effective pH for pyrite depression was 11.8–11.9; copper recovery was 70–75 per cent (grade of 15–20 per cent copper) and the sulfur recovery (pyrite product) was 80–85 per cent (grade of 34–36 per cent sulfur).

Recovery of Gold in Pyritic Sulfide Ores - Mine Engineer

Recovery of gold in sulfide ores has fallen into several categories. First is froth flotation, and second is cyanidation of the ores. Using cyanide to recover gold from sulfide ores generally results in 30 to 35% recovery, and the best I have heard of is around 50% recovery.

Pyrite recovery mechanisms in rougher flotation circuits - CORE

circuit potentials of pyrite, pyrrhotite, and steel electrodes with respect to the reference electrode. To verify the results, two ... effects on the recovery and selectivity of minerals during flotation. Methods and materials Figure 1 shows the circuit that was used to measure open-circuit potentials. In this circuit, potential differences between

New Technology In Pyrite Recovery Circuits Gold Copper And ...

Slurry from the grinding circuit, at approximately 35% solids and 80—85% passing 135 mm is pumped to three thickeners. Thickener underflow, at approximately 54% w/w solids, is pumped to a train of four acidulation tanks. Sulfuric acid is added to the slurry to destroy sufficient carbonate prior to entering the autoclave circuit. Process air is also injected into the acidulation tanks to …

Separation of silica from pyrite cinder via reverse ...

Pyrite's metallic luster and pale brass-yellow hue give it a superficial resemblance to gold, hence the well-known nickname of fool's gold.The color has also led to the nicknames brass, brazzle, and Brazil, primarily used to refer to pyrite found in coal.. The name pyrite is derived from the Greek πυρίτης λίθος (pyritēs lithos), "stone or mineral which strikes fire", in turn from ...

Separation efficiency improvement of a low grade copper ...

This circuit consists of four parallel banks of seven 130 m mechanical cells. Results of testing the first rougher cell (approximately 69% Cu recovery), showed that 40-60% of pyrite in the finer class of the concentrate (-45 μm) was recovered by entrainment.

Interaction of copper(II) ions with pyrite and its ...

Sep 10, 2014· The $14-million pyrite recovery circuit went up as planned with the flotation circuit consisting entirely of staged flotation reactors; it began producing concentrate within the existing surface mill facility in early 2014. But current market conditions do not justify the pressure oxidation facility, so for now Chelopech is selling its pyrite ...

Optimising the Telfer Pyrite Regrind Circuit – Effect of ...

A process is disclosed for the recovery of a metal from a pyrite-bearing material. The process comprises thermally decomposing the pyrite-bearing material so as to produce a material comprising pyrrhotite (FeS). The process also comprises leaching the material comprising pyrrhotite with an acid such that the iron in the pyrrhotite is oxidised to a +3 oxidation state, …

Recovery of Gold in Pyritic Sulfide Ores - Mine Engineer

Recovery of gold in sulfide ores has fallen into several categories. First is froth flotation, and second is cyanidation of the ores. Using cyanide to recover gold from sulfide ores generally results in 30 to 35% recovery, and the best I have heard of is around 50% recovery.

Pyrite recovery mechanisms in rougher flotation circuits ...

The open-circuit flotation separation of pyrite cinder was studied at pH 6.4~6.7 and 8.0~8.5, respectively. The flow sheet of open-circuit separation of pyrite cinder is shown in Fig.6, and the results are shown in Table 3.The results

Development of AERO® MX3048 Promoter for MMG Sepon ...

To reduce reagent costs and improve the pyrite recovery, a mixed collector of NDM + PIAX (mass ratio of 2:1, the rougher concentration 150 g/t, the scavenger concentration 75 g/t, the cleaner concentration 30 g/t) was adopted in the flotation circuit.

An Alternative Circuit for Chalcopyrite-Pyrite Ores with ...

Sep 01, 2019· The recovery of pyrite at 5 min of flotation is 97.8%, and at 7 min of flotation the maximum estimated recovery of 99.1% is reached. In order to produce a concentrate with a pyrite grade closest to 90%, and a recovery above 90%, 3.5 min were selected for the recleaner flotation stage as the optimum flotation time. 3.3.

Wheaton Precious Metals Corp. - Streams - Peñasquito

Jan 01, 2011· Pyrite recovery in the flotation circuit is critical to the operation, as it is used to generate acid and soluble ferric ion for the leach circuit. Low pyrite recovery has been an on-going challenge in the flotation circuit. Final tailings characterization work done by Ian Wark Research Institute (Bassell et al., 2006) showed that the pyrite ...