THE USE OF DITHIOPHOSPHATES AND DITHIOCARBAMATES FOR THE FLOTATION OF ARSENOPYRITE

被引：20

作者：

OCONNOR, CT

BRADSHAW, DJ

UPTON, AE

机构：

[1] Dept. of Chemical Engineering, University of Cape Town, Rondebosch

[2] Karbochem Ltd., Sasolburg, 9570

来源：

MINERALS ENGINEERING | 1990年 / 3卷 / 05期

关键词：

Arsenopyrite; dithiocarbamate; dithiophosphate; flotation; pyrite;

D O I：

10.1016/0892-6875(90)90038-D

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The recovery of arsenopyrite from an arsenopyrite/pyrite ore is desirable for a number of reasons. This can be optimized using a two stage flotation process in which a dithiophosphate is added at pH=11 in the first stage and copper sulphate and a dithiocarbamate in the second stage. It was found that better separations were obtained when aged ore was used. It was possible to simulate this ageing process by heating. Various alkyl functional groups of the collectors were tested and the best separations were obtained using sodium isobutyl dithiophosphate and a mixture of 10% : 90% sodium cyclohexyl : n-propyl dithiocarbamate. This suite of collectors led to a recovery of 74.8% arsenopyrite and 8.4% pyrite with grades of 37.9% arsenopyrite and 11.6% pyrite respectively. The grades of gold in the feed, concentrate and tailings for these conditions were 8.10 g/ton, 271 g/ton and 2.55 g/ton respectively. This represented a gold recovery of 83.6%. © 1990.

引用

页码：447 / 459

页数：13

共 10 条

[1]

Swash, A mineralogical investigation of refractory gold ores and their beneficiation, with special reference to arsenical ores, J. S. Afr. Inst. Min. Metall., 88, (1988)

[2]

Draskic, Manojlovic-Grifting, Pavlic, Important surface modifications of pyrite and arsenopyrite in the presence of potassium permanganate in the depression of arsenopyrite, Ind. Miner. Tech., 6, (1984)

[3]

Kogan, Kurchenko, Antsiterova, Depression of arsenopyrite in the selection of gold containing products, Tsvetn. Mot., 1, (1986)

[4]

Abeidu, Almahdy, Magnesia mixture as a regulator in the separation of pyrite from chalcopyrite and arsenopyrite, Int. J. Miner. Process., 6, (1980)

[5]

McCabe, Smith, Unit Operations of Chemical Engineering, (1956)

[6]

Dimou, MSc. Thesis, (1986)

[7]

O'Connor, Bradshaw, Karbochem Report, (1984)

[8]

Ackerman, Harris, Klimpel, Aplan, Evaluation of flotation collectors for copper sulphides and pyrite, Int. J. Miner. Process., 21, (1987)

[9]

Fuerstenau, Huiatt, Kuhn, Dithiophosphate vs. xanthate flotation of chalcocite and pyrite, Trans. A.I.M.E., 250, (1971)

[10]

Gaudin, Wilkinson, Surface action of some sulphur bearing organic compounds on some finely ground minerals, J. Phys. Chem., 37, (1933)

← 1 →