Effect of technological factors on bacterial leaching of low-grade Ni-Cu sulfide ore
来源期刊：中国有色金属学报(英文版)2001年第5期
论文作者：方兆珩 陈泉军
文章页码：774 - 777
Key words：Thiobacillus ferrooxidans; Thiobacillus thiooxidans; low-grade Ni-Cu sulfide ore; bioleaching
Abstract: The bioleaching of a low-grade Ni-Cu sulfide ore from Jinchuan Mine with Thiobacillus ferrooxidans(TF5) and Thiobacillus thiooxidans (TT) was investigated. The effect of pH, the initial cell numbers of bacteria, the pulp density and the ratio of TF5 and TT on leaching was described, and the favorable bioleaching conditions for the ore were experimentally confirmed. The aeration leaching, agitation leaching with air bubbling, and column leaching were respectively tested. The highest recovery was achieved in the aeration leaching. After leachingfor 20d with pulp density of 15%,the extractions of Ni, Cu and Co were respectively 95.4%,48.6% and 82.6%.
