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selective flotation of chalcopyrite and bornite from pyrite:

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Aug 15, 2019 · Single mineral flotation tests were performed to evaluate the flotation behavior of chalcopyrite and pyrite using HEDP or EX as collector at a dosage of 2 × 10 −4 mol/L with the results shown in Fig. 1(a). It can be seen from Fig. 1(a) that, within the pH range studied, the flotation recovery of chalcopyrite using HEDP as collector was slightly higher than that of chalcopyrite with EX as ...

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Apr 01, 2015 · Flotation recovery of chalcopyrite and pyrite at different pH values with a collector concentration of 8 × 10 −5 mol/L. (Cp and Py represent chalcopyrite and pyrite respectively in all figures). Fig. 3 reveals the recoveries of chalcopyrite and pyrite without collector and with SBX and SDTP as collectors in the presence of 35 mg/L SGX.

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Screening and/or designing more selective and green collectors is a ‘hot topic’ in mineral processing field. In this work, 1-Hydroxyethylidene-1, 1-diphosphonic acid (HEDP), a cheap green reagent widely used in water treatment, was for the first time, applied in

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Jul 31, 2019 · Single mineral flotation of chalcopyrite, molybdenite and pyrite with a regular collector (potassium amyl xanthate) and a selective collector (N-isopropoxypropyl-N′-ethoxycarbonyl thiourea) for ...

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Sep 20, 2019 · In this regard, this study introduces a novel pyrite depressant, polyglutamic acid (PGA), in the selective flotation of chalcopyrite with xanthate as the collector. A series of flotation tests, zeta potential measurements, adsorption analysis, infrared spectral (IR) analysis and X-ray photoelectron spectroscopy (XPS) analysis were used to study ...

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Jan 06, 2005 · Separation of pyrite from chalcopyrite is conventionally achieved by selective depression of pyrite using depressants like cyanide under alkaline conditions. On the other hand, separation of pyrite from arsenopyrite has been a problem due to their similar flotation behaviour with sulphidic collectors.

Selective separation of chalcopyrite from pyrite with a ...

Pyrite depression in copper ore flotation often requires large doses of inorganic depressants that lead to high toxicity, high costs, and low selectivity. Thus, this study offers a novel pyrite depressant, polyglutamic acid (PGA), in the selective flotation of chalcopyrite with xanthate as a collector. The flotation and adsorption mechanism on chalcopyrite and pyrite were systematically ...

(PDF) Dextrin as a Regulator for the Selective Flotation ...

Results are presented on the flotation of chalcopyrite from a chalcopyrite-galena bulk concentrate high in pyrite using dextrin as a depressant for galena and pyrite at pH 8.

AN FTIR STUDY ON SELECTIVE SEPARATION OF PYRITE

Chalcopyrite and arsenopyrite are often associated with pyrite and selective depression of the pyrite from these would prove economically beneficial for further extraction. As against the conventional techniques, microbially induced flotation and flocculation stands out to be more effective, economically viable and an environmentally benign process

Selective separation of chalcopyrite from pyrite with a ...

Sep 20, 2019 · Pure crystals of pyrite and chalcopyrite samples used in this investigation were received from Yunfu, Guangdong Province, China. The X-ray fluorescence (XRF) and X-ray diffraction (XRD) analysis, shown in Table 1 and Fig. 1, respectively, were carried out to confirm the purity of the minerals.The mineral samples were carefully handpicked, crushed, ground in a porcelain mill, and

A STUDY OF FLOTATION AND LEACHING BEHAVIOUR OF

Mar 17, 2011 · chalcopyrite. Chalcopyrite recovery was marginally improved from the collectorless flotation case while bornite experienced vastly improved recoveries in the presence of a collector to surpass the recovery of chalcopyrite. The gap between floatability of bornite and chalcopyrite

Selective Flotation - Mineral Processing & Metallurgy

Sep 17, 2015 · In selective flotation, less is more! ... Since we are in a sulfide system containing pyrite, sphalerite, chalcopyrite, bornite, and chalcocite; this graph presents how well the test conditions were at recovering ‘selectively’ Copper species without too much of the other sulfides.

Minerals | Free Full-Text | Selective Attachment of ...

L.f exhibits selective attachment to pyrite between 0 h and 168 h exposure via an indirect contact mechanism. Separation of chalcopyrite from pyrite was achieved through exposing the minerals for 72 h with an L.f culture grown on either HH media, chalcopyrite, or pyrite. The results produced 80.4, 43.4, and 47.4% recovery of chalcopyrite ...

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

greater effect on the chalcopyrite flotation than the other parameters. The recovery and grade of chalcopyrite and pyrite were obtained as 79.95%, 49% and 5.3%, 7.98% using the Aero 407, respectively. Under the optimum conditions, the grade of final concentrate increased from 0.94% to 21.3% with three cleaner stages.

Investigating the selectivity of a xanthate derivative for ...

Sep 21, 2019 · Separating chalcopyrite, an important copper-containing ore, from pyrite is an important mineral-processing objective. Herein, we report the synthesis of S-hydroxyethyl-O-isobutyl xanthate (HEIBX), a novel surfactant bearing both hydroxyl and thione groups, through the attachment of a hydroxyethyl group to sodium isobutyl xanthate (SIBX), and its first application as a flotation collector

Selective flotation of chalcopyrite and molybdenite using ...

Jun 15, 2018 · Hydrogen peroxide (H 2 O 2) has been used as an oxidizing agent in the selective flotation of chalcopyrite and molybdenite.However, this method required relatively high concentration of H 2 O 2 to deliver flotation results (i.e., mineral grades and recoveries) comparable to those obtained by the conventional copper-molybdenum (Cu-Mo) ores flotation using sodium hydrosulfide (NaHS).

Selective chalcopyrite flotation from pyrite with ...

Micro-flotation test showed that when the pH was 8.5, the recovery efficiency of pyrite decreased from 80.18% to 22.17% after adding SDD, while that of chalcopyrite decreased from 96.32% to 92.79% ...

NIOSHTIC-2 Publications Search - 10004717 - The Flotation ...

The flotation of chalcocite, bornite, chalcopyrite, and pyrite has been studied in a microflotation cell in which the potential of a bed of the mineral particles could be controlled electromechanically. The ethylxanthate-induced flotation of each mineral is markedly dependent on electrochemical potential, with the recovery changing from 0 to 100 pct in potential intervals of - 0.2 V.

Increasing selectivity of chalcopyrite and chalcocite ...

The flotation of four copper sulfide minerals (chalcopyrite, chalcocite, bornite, covellite) and pyrite with xanthates shows that a minimum in the collector concentration necessary for flotation ...

Selective flotation of enargite and chalcopyrite | Request PDF

Selective flotation of enargite from chalcopyrite under varied pulp potentials was conducted to investigate the feasibility of enargite removal from a chalcopyrite concentrate.The test results ...

Selective separation of pyrite and chalcopyrite by ...

Sep 01, 2004 · Selective separation of pyrite from other associated ferrous sulphides at acidic and neutral pH has been a challenging problem. This paper discusses the utility of Acidithiobacillus ferrooxidans for the selective flotation of chalcopyrite from pyrite. Consequent to interaction with bacterial cells, pyrite remained depressed even in the presence ...

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

greater effect on the chalcopyrite flotation than the other parameters. The recovery and grade of chalcopyrite and pyrite were obtained as 79.95%, 49% and 5.3%, 7.98% using the Aero 407, respectively. Under the optimum conditions, the grade of final concentrate increased from 0.94% to 21.3% with three cleaner stages.

Selective Flotation - Mineral Processing & Metallurgy

Sep 17, 2015 · In selective flotation, less is more! ... Since we are in a sulfide system containing pyrite, sphalerite, chalcopyrite, bornite, and chalcocite; this graph presents how well the test conditions were at recovering ‘selectively’ Copper species without too much of the other sulfides.

Minerals | Free Full-Text | Selective Attachment of ...

L.f exhibits selective attachment to pyrite between 0 h and 168 h exposure via an indirect contact mechanism. Separation of chalcopyrite from pyrite was achieved through exposing the minerals for 72 h with an L.f culture grown on either HH media, chalcopyrite, or pyrite. The results produced 80.4, 43.4, and 47.4% recovery of chalcopyrite ...

Study of Flotation Parameters for Copper Recovery from ...

minerals along with chalcopyrite, pyrite and sphalerite are generally complex. Tetrahedrite-tennantite minerals ... with chalcopyrite and sphalerite , bornite , and sometimes galena , in the form of veins and nests in aggregates of fine- ... issue, effective selective flotation of tennantite ores is still the subject to investigation. 4.2 ...

Selective Attachment of Leptospirillum ferrooxidans for ...

L.f exhibits selective attachment to pyrite between 0 h and 168 h exposure via an indirect contact mechanism. Separation of chalcopyrite from pyrite was achieved through exposing the minerals for 72 h with an L.f culture grown on either HH media, chalcopyrite, or pyrite.

Selective adsorption mechanism of salicylic acid on pyrite ...

Selective adsorption mechanism of salicylic acid on pyrite surfaces and its application in flotation separation of chalcopyrite from pyrite Separation and Purification Technology ( IF 7.312) Pub Date : 2020-02-03, DOI: 10.1016/j.seppur.2020.116650

Minerals | Free Full-Text | Metal-Selective Processing ...

Chalcopyrite, bornite, and pyrite were analyzed to determine Co, Au, Ag, Te, and As, while molybdenite was analyzed for Re, and Au, (plus W), because they represent the prime trace metals that could be concentrated in molybdenite crystals . ... bulk-sulfide flotation, and selective Cu-sulfide flotation. However, identification of critical and ...

Differential flotation of a chalcocite-pyrite particle bed ...

External control of the electrochemical potential of a bed of mineral particles was investigated by the US Bureau of Mines as a method for controlling particle interaction with organic collectors and, thus, flotation response. A cylindrically shaped, 200- to 300-g bed of sulfide mineral particles was used as the working electrode in an electrochemical-flotation cell. In a pH 9.2 sodium ...

Flotation Conditioners -Modifiers -Activators -Depressants

Aug 10, 2015 · As Iron pyrite (FeS2) and chalcopyrite (CuFeS2) are very similar the collector will be attracted to both of them. Gold on the other hand is not of the same mineral composition meaning of course that the collector will not attach itself as easily to gold. Iron pyrite unfortunately does not have a market value, therefore is an unwanted mineral.

The separation of chalcopyrite and chalcocite from pyrite ...

These flotation results indicate a possibility for selective flotation of copper sulfide and arsenic-bearing copper minerals. ... pyrite > chalcopyrite > bornite > enargite Pyrite is the most ...

Investigation of Copper Recovery from a New Copper Ore ...

Pure mineral rock specimens of chalcopyrite (>92% grade), chalcocite (>93% grade) and bornite (>91% grade) were purchased commercially. The samples were obtained from Sweden, England and Austria respectively. Pure crystalline calcite and quartz samples used in

Use of chelating agents as collectors in the flotation of ...

Feb 01, 1999 · The general order of mineral floatability with these reagents is chalcopyrite = chalcocite > covellite > bornite » pyrite. The flotation of malachite is generally similar to that of the copper sulfides, indicating the special effectiveness of copper in the crystal lattice for collector attachment.

Study on selective adsorption of organic depressant on ...

Chalcopyrite and pyrite are difficult to separate under low alkaline environment. The selective depression mechanism of pyrite by sodium dimethyl dithiocarbamate (SDD) was explored in this study. Micro-flotation test showed that when the pH was 8.5, the recovery efficiency of pyrite decreased from 80.18% to 22.17% after adding SDD, while that of chalcopyrite decreased from 96.32% to 92.79% ...

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