Customer case aboutpyrite flotation depressants

pyrite flotation depressants

Pyrite Depressant Froth Flotation (Sulphide & Oxide

2021-11-20  Of course, there are other depressants for pyrite (more selective). The world of the flotation reagents has changed. Now there are a lot of good new reagents on a commercial scale. Aeration The surface of the pyrite oxidizes rapidly and it floated worse. At the same time at a short aeration of the pulp extraction of copper increases.

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Dextrin as a non-toxic depressant for pyrite in flotation

2004-9-1  Flotation of pyrite with xanthate is due to dixanthogen formation on the surface of pyrite through the oxidation reaction of xanthate ions coupled with a reduction reaction of ferric oxyhydroxide species to ferrous species (Lopez Valdivieso et al., 2003; Bulut and Atak, 2002; Fuerstenau et al., 1968). Due to the heterogeneous nature of the

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The depression of pyrite in selective flotation by

2016-10-1  Since dixanthogen is the main species responsible for pyrite flotation, any reagents that are more reducing than the X-/X 2 couple are supposed to act as pyrite depressants by preventing oxidation of xanthate (Fuerstenau et al., 1985). The reducing agents, sulfide/sulfite ions, are readily oxidized following Eqs.

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US5853571A 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 0.05 to 0.75 kilograms per ton of concentrate solids using a pyrite depressant compounds selected from the group consisting of R1, R2, R3 N.sup.+ O.sub.2 H.sub.4 SR4X.sup.-

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Dextrin as a non-toxic depressant for pyrite in flotation

2004-9-1  The results of single mineral flotation tests showed that konjac glucomannan had a stronger depression effect on pyrite than traditional organic depressants (Starch, Dextrin, Guar gum) with the

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(PDF) Depression of Pyrite in Seawater Flotation by Guar

The application of guar gum for pyrite depression in seawater flotation was assessed through microflotation tests, Focused Beam Reflectance Measurements (FBRM), and Particle Vision Measurements (PVM).

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Pyrite Depression in Copper Flotation

2015-10-8  In froth flotation, depressing pyrite or any metal is impossible if minerals are locked. Effective grinds-liberation and good pH targeting will let

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Pyrite Depression with Pionera Biopolymers Borregaard

Initial laboratory flotation experiments and a full-scale plant trial revealed that Pionera F-250 biopolymer could replace cyanide as a pyrite depressant at the Tara mine in Ireland. The use of Pionera F-250 gives flotation recoveries similar to the use of cyanide as a pyrite depressant. For the mine, the replacement of cyanide as a pyrite

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Pyrite depressants useful in the separation of pyrite from

The conventional first flotation is followed by a second stage which uses an organic colloid as a depressant for the coal. The use of polyhydroxy alkyl xanthate depressants to depress the flotation of pyrite in coal flotation is taught in U.S. Pat. No. 4,211,642.

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Depressants Solvay

2021-11-28  Other applications of depressants include the flotation of simple metal sulfide and complex polymetallic bearing ores, where we provide products that depress iron sulfides such as pyrite and marcasite. Solvay also offers products for the depression of magnesium silicates such as talc, pyrophyllite, serpentines, olivines and pyroxenes.

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Pyrite Depression with Pionera Biopolymers Borregaard

Initial laboratory flotation experiments and a full-scale plant trial revealed that Pionera F-250 biopolymer could replace cyanide as a pyrite depressant at the Tara mine in Ireland. The use of Pionera F-250 gives flotation recoveries similar to the use of cyanide as a pyrite depressant. For the mine, the replacement of cyanide as a pyrite

get price

(PDF) Depression of Pyrite in Seawater Flotation by Guar

The application of guar gum for pyrite depression in seawater flotation was assessed through microflotation tests, Focused Beam Reflectance Measurements (FBRM), and Particle Vision Measurements (PVM).

get price

Pyrite depressants useful in the separation of pyrite from

The conventional first flotation is followed by a second stage which uses an organic colloid as a depressant for the coal. The use of polyhydroxy alkyl xanthate depressants to depress the flotation of pyrite in coal flotation is taught in U.S. Pat. No. 4,211,642.

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2021-Evaluation of green synthetic depressants for sulfide

2021-3-1  Khoso S A, Hu Y, Tian M, et al. Evaluation of green synthetic depressants for sulfide flotation: Synthesis, characterization and floatation performance to pyrite and chalcopyrite[J]. Separation and Purification Technology, 2021, 259: 118138.

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ROLE OF STARCH AND METABISUPHITE ON PURE

2011-8-19  investigates the role of non-toxic depressants on the flotation of pyrite. Starch and meta bisulphite were used as a depressant for pure pyrite sample and a pyritic copper ore at two different pHs values. pH was 6.5 and 10 in pure pyrite study while it was 6.9 and 12 in pyritic ore study.

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A comparison of native starch, oxidized starch and CMC as

Depression of pyrite is very important in sulphide ore flotation. This paper investigates the role of non-toxic depressants on the flotation of pyrite. Starch and meta bisulphite were used as a

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Selective separation of chalcopyrite from pyrite with a

2019-6-5  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

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Dr Yufan Mu School of Chemical Engineering University

2021-11-27  Depression of pyrite in the flotation of chalcopyrite using biopolymer depressants. XXVIII International Mineral Processing Congress Proceedings, Québec City, Canada, 11-15 September 2016. Québec City, Canada: Canadian Institute

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Depressants Solvay

2021-11-28  Other applications of depressants include the flotation of simple metal sulfide and complex polymetallic bearing ores, where we provide products that depress iron sulfides such as pyrite and marcasite. Solvay also offers products for the depression of magnesium silicates such as talc, pyrophyllite, serpentines, olivines and pyroxenes.

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电化学调控浮选能带模型及应用(Ⅰ)①——半导体能带理论及

Molecular structures and activity of organic depressants for marmatite,jamesonite and pyrite flotation[J].中国有色金属学报:英文版,2010,20(10):1993-1999. 被引量:6 1 陈建华,冯其明,卢毅屏.电化学调控浮选能带模型及应用(Ⅱ)——黄药与硫化矿物作用的能带模型

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ROLE OF STARCH AND METABISUPHITE ON PURE

2011-8-19  investigates the role of non-toxic depressants on the flotation of pyrite. Starch and meta bisulphite were used as a depressant for pure pyrite sample and a pyritic copper ore at two different pHs values. pH was 6.5 and 10 in pure pyrite study while it

get price

Depression of Pyrite in Seawater Flotation by Guar Gum

The application of guar gum for pyrite depression in seawater flotation was assessed through microflotation tests, Focused Beam Reflectance Measurements (FBRM), and Particle Vision Measurements (PVM). Potassium amyl xanthate (PAX) and methyl isobutyl carbinol (MIBC) were used as collector and frother, respectively. Chemical species on the pyrite surface were

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Selective separation of chalcopyrite from pyrite with a

2019-6-5  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

get price

Dr Yufan Mu School of Chemical Engineering University

2021-11-27  Depression of pyrite in the flotation of chalcopyrite using biopolymer depressants. XXVIII International Mineral Processing Congress Proceedings, Québec City, Canada, 11-15 September 2016. Québec City, Canada: Canadian

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古尔胶和鞣酸添加方式对硫化矿浮选的影响

2013-10-9  Abstract: The effects of two types of organic depressants, guar gum and tannic acid, on the flotation of galena, chalcopyrite and pyrite were investigated using micro-flotation tests, and different addition orders of the two reagents and ethyl xanthate were also studied.

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2 Gold Processing Technology Online Course 2021

2021-3-31  Depressants Increase the selectivity by preventing the flotation of gangue Dispersants Acts on aggregates to improve selectivity. Activators pyrite concentrate. Flotation is done at about pH

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Depressants Solvay

2021-11-28  Other applications of depressants include the flotation of simple metal sulfide and complex polymetallic bearing ores, where we provide products that depress iron sulfides such as pyrite and marcasite. Solvay also offers products for the depression of magnesium silicates such as talc, pyrophyllite, serpentines, olivines and pyroxenes.

get price

电化学调控浮选能带模型及应用(Ⅰ)①——半导体能带理论及

Molecular structures and activity of organic depressants for marmatite,jamesonite and pyrite flotation[J].中国有色金属学报:英文版,2010,20(10):1993-1999. 被引量:6 1 陈建华,冯其明,卢毅屏.电化学调控浮选能带模型及应用(Ⅱ)——黄药与硫化矿物作用的能带模型

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磨矿和浮选过程中黄铁矿电化学行为的研究进展

2020-6-29  Mu Y F, Peng Y J, Lauten R A. The depression of pyrite in selective flotation by different reagent systems-A literature review. Miner Eng, 2016, 96-97: 143 doi: 10.1016/j.mineng.2016.06.018 [36] Janetski N D, Woodburn S I, Woods R. An electrochemical

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陈建华-金属资源与环境创新中心 gxu.edu.cn

2018-1-7  [44]Molecular structures and activity of organic depressants for marmatite, jamesonite and pyrite flotation. Transactions of Nonferrous Metals Society of China. 2010, 20(10): 1993-1999. (第一作者) (SCI影响因子: 1.34) [45]First-principles theory on electronic

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