BACTERIAL OXIDATION OF AN ARSENICAL GOLD SULFIDE CONCENTRATE FROM OLYMPIAS, GREECE

被引：33

作者：

KOMNITSAS, C

POOLEY, FD

机构：

[1] University of Wales College of Cardiff, School of Engineering, Cardiff, CF2 1TA, Newport Rd

来源：

MINERALS ENGINEERING | 1990年 / 3卷 / 3-4期

关键词：

Arsenical gold concentrate; bacterial leaching; cyanide leaching; gold and silver recovery; pachuca reactor leaching;

D O I：

10.1016/0892-6875(90)90125-U

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

The application of bacterial oxidation as a pretreatment step for the extraction of gold from arsenical gold sulphide concentrates offers potentially significant economic advantages over oxidative pretreatment alternatives. In this study the bacterial oxidation of an extremely refractory gold sulphide concentrate, from Olympias, Greece, is examined. Leaching tests were conducted in air-stirred pachuca reactors in order to determine the effect of pulp density on the degree of pyrite and arsenopyrite oxidation. Cyanidation tests were conducted in order to determine the degree of gold and silver liberation in relation to the degree of each sulphide phase oxidised and to the cyanide consumed. Mathematical analysis of the leaching data allowed the gold distribution in each sulphide mineral phase to be estimated and the gold recoveries according to the degree of each mineral oxidised predicted. © 1990.

引用

页码：295 / 306

页数：12

共 21 条

[1]

Adam, Stefanakis, Kontopoulos, Bacterial Oxidation of the Olympias Arsenical Pyrite Concentrate, Paper presented in Biotechnology in Minerals and Metal Processing, S.M.E., (1989)

[2]

Nicolaou, Kokonis, Geology and Development of Olympias Mine, Eastern Chalkidiki, Macedonia Greece, Complex Sulphide Ores, pp. 260-270, (1980)

[3]

Adam, Preliminary Tests for the Separation of Olympias Pyrites, METBA S.A., Technical Report, 142, (1989)

[4]

Lazer, Southwood, Southwood, The Release of Refractory Gold from Sulphide Minerals during Bacterial Leaching, Gold 100, Proc. of the Intr. Conf. on Gold, V.2, Extractive Metallurgy of Gold, pp. 235-237, (1986)

[5]

Lawrence, Bruyvesteyn, Biological Pre-oxidation to Enhance Gold and Silver Recovery from Refractory Pyrite Ores and Concentrates, C.I.M. Bulletin, 76, pp. 107-110, (1983)

[6]

Pooley, Use of Bacteria to Enhance Recovery of Gold from Refractory Ores, Minprep 87, Intr. Sym. on Innovative Plant and Processes for Mineral Engr., pp. 1-14, (1987)

[7]

Hoffman, Hendrix, Inhibition of T. Ferrooxidans in Soluble Silver, Biotech. Bioeng., 18, 8, (1976)

[8]

Pooley, Bacteria Accumulate Silver during Leaching of Sulphide Ore Minerals, Nature, 296, pp. 642-643, (1982)

[9]

Panin, Karavainko, Polkin, Mechanism and Kinetics of Bacterial Oxidation of Sulphide Minerals, Biotechnology of Metals, pp. 197-225, (1977)

[10]

Atkins, Study on the Oxidation of Sulphide Minerals in the Presence of Bacteria, Metallurgical Applications of Bacterial Leaching and Related Microbiological Phenomena, pp. 403-426, (1978)

← 1 2 3 →