How does bioleaching start?

被引：39

作者：

Lizama, HM ^{[1
]}

Fairweather, MJ ^{[1
]}

Dai, Z ^{[1
]}

Allegretto, TD ^{[1
]}

机构：

[1] Teck Cominco Met Ltd, Trail, BC V1R 4S4, Canada

来源：

HYDROMETALLURGY | 2003年 / 69卷 / 1-3期

关键词：

bioleaching; zinc sulphide; monod-type kinetics;

D O I：

10.1016/S0304-386X(03)00028-8

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

Discrete particle size fractions of a zinc sulphide ore were bioleached in stirred tank reactors operated in batch mode. Kinetic analyses of these tests revealed that the leaching process was divided into two stages: (1) a period of colonization of the ore by bacteria, and (2) a steady rate period where the reaction could be described by classical shrinking-core kinetics. The colonization period itself could be described by classical bacterial growth kinetics and followed the logistic equation. The bacterial colonization rate constant was a function of the available zinc sulphide mineral surface area and could be described by classical Monod-type kinetics. The steady reaction rate constant was also a function of the particle size and fractional zinc content. (C) 2003 Elsevier Science B.V. All rights reserved.

引用

页码：109 / 116

页数：8

共 19 条

[1]

BRAUN RL, 1974, METALL TRANS, V5, P1717, DOI 10.1007/BF02644133

[2] EFFECT OF IRON IMPURITY IN ZINC-SULFIDE CONCENTRATES ON THE RATE OF DISSOLUTION [J].