pyrite flotation test

WO1993010904A1 Flotation separation of arsenopyrite from ...

Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO3 ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings ...

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A novel depressant for selective flotation separation of ...

Sep 01, 2019· The real ore for a batch flotation test was also obtained from Fengshan Pyrite Mine. Chemical analysis indicates that the main composition of the ore is as follows: % S, % Fe, % Al 2 O 3 and % SiO 2. The sample is composed mainly of pyrite…

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Minerals | Free FullText | Selective Flotation of Pyrite ...

Pyrite is a major gangue mineral associated with galena and other valuable minerals, and it is necessary to selectively remove pyrite to upgrade the lead concentrate by froth flotation. In this study, the flotation experiments of a single mineral and mixed minerals were performed using chitosan with different molecular weights (MW = 2−3, 3minus;6, 10 and 100 kDa) as a depressant, ethyl ...

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Recovery of pyrite from copper tailings by flotation ...

The pyrite grade in the fresh tailing sample and in the flotation product was determined indirectly from the content sulfur, copper and iron. Calculations carried out considering the elemental chemical composition presented in Table 1 and the mineralogical species that contained sulfur, identified by the XRD analysis, allowed to determine that the fresh tailings sample contained % FeS 2 ...

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EP0568672B1 Flotation separation of arsenopyrite from ...

Arsenopyrite is separated from a mixture with pyrite by contacting the mixture with a sulfitic agent providing HSO3 ions at elevated temperature and pH below about 8 for a period sufficient to impart a selective depression property to the arsenopyrite. On addition of a collector the pyrite is rendered floatable, enabling froth flotation to achieve a concentrate rich in pyrite and tailings ...

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Alternatives for Sodium Cyanide for Flotation Control

The three reagents selected and tested were sodium sulfite, sodium sulfide, and sodium thiosulfate. When the ‘.aboratory experi ments indicated that these reagents did exhibit depressant potential for pyrite flotation, possibly equal to that of cyanide (also tested in parallel experiments), Phase II …

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Flotation Behavior of Complex Sulfide Ores in the Presence ...

Jan 01, 2017· The overarching goal of this work was to test the possibility of replacing sodium cyanide by chitosan polymer as a selective pyrite depressant in the bulk flotation of complex sulfide ore sample containing galena (PbS), chalcopyrite (CuFe[]), sphalerite (ZnS), pyrite (Fe[]), dolomite (CaMg[(C[]).]), and marcasite (a ...

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PyriteGold Recovery in Copper Rougher Flotation Tailings

on its flotation was studied in a typical copper ore. A twostage (Cu and pyrite) rougher flotation indicated that maximum Au recovery (95%) can only be achieved with pyrite flotation (recovery, 93%). A decrease in grind size of the flotation feed from 70 µm to 38 µm and without pyrite flotation stage

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INTERPRETATION OF FLOTATION DATA FOR THE DESIGN OF …

pyrite) or as is the case for polymetallic ores, a complex three stage sequential separation (ie copper, lead, zinc). ... The open circuit batch flotation test work is generally the first step in an investigation. While the conditions employed in batch testing should be readily transferable to plantscale

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pyrite flotation depression

pyrite flotation depressants The Pyrite Depression in a Copper Only Flotation circuit is simple enough. If your froth flotation system only tries to recover chalcopyritecopper, you need to bring the plant's pH up to the other side (right side) of the PYRITE curve.

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The Adsorption of Cu Species onto Pyrite Surface and Its ...

Flotation tests were conducted in Hallimond tube with g pyrite sample for each test. The pyrite sample was first mixed with 30 mL of deionized water in a 50 mL beaker. The pH of the slurry was adjusted to the specified pH by using mol/L HCl and NaOH solution.

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ALTA Gold 2012 EDoc Home | Albion Process

Flotation test work was conducted on both samples and the optimum conditions presented in Table 2. For the low throughput Ore A flotation test work indicated that the majority of gold can be concentrated by concentrating the sulphide component in the ore to mass pulls of …

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CHAPTER 3 COMPARISON OF DIFFERENT PYRRHOTITE …

Industries Inc. developed several polymeric pyrite/pyrrhotite depressants. Of the various products tested, S7260 and S7261 showed the best results in depressing pyrite during coal flotation (85). The purpose of this research is to investigate the depression effect of two polymeric depressants (S7260 and S7261) developed by Cytec Industries by

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(PDF) Selective flotation of chalcopyrite from pyrite ...

Flotation results showed that the selective flotation of pyrite from galena can be achieved under the preferred reagent scheme, , 400 g/t chitosan (10 kDa), 1600 g/t ethyl xanthate, and 100 g ...

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US Patent for Pyrite depressant useful in flotation ...

The present invention relates to a process for separating pyrite from sulfide ores and coal during flotation separation which comprises the depressing of pyrite with from about to kilograms per ton of concentrate solids using a pyrite depressant compounds selected from the group consisting ofR1, R2, R3 + (I)where R1, R2 and R3 are lower alkyls wherein ...

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Influence of the Interaction between Sphalerite and Pyrite ...

In this paper, the effect of pyrite on the activation of sphalerite was investigated by microflotation, copper adsorption experiments, Xray photoelectron spectroscopy (XPS), and electrochemical measurement. The microflotation test results showed that the recovery and flotation rate of sphalerite with copper sulphate as activator and butyl xanthate as collector were significantly decreased ...

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Pyrite Tailings Recovery by Flotation

Pyrite has long been used as a source of sulphur, and its recovery as a byproduct from the flotation of certain base metal ores is a well established practice. Large tonnages of mill tailings which have accumulated as a result of various milling operations frequently contain significant amounts of pyrite. In many instances these tailings can be treated to yield pyrite concentrates that are a ...

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Separation of silica from pyrite cinder via reverse ...

sheet of opencircuit separation of pyrite cinder is shown in , and the results are shown in Table results showed that the separation of silica from pyrite cinder by reverse flotation is possible and good selectivity can be achieved at about pH Table 3 Results of reverse flotation of actual pyrite cinder ore (wt% )

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