(1. 中南大學(xué) 資源加工與生物工程學(xué)院, 長沙 410083;
2. 中國有色金屬工業(yè)技術(shù)開發(fā)交流中心, 北京 100841)
摘 要: 研究了閃鋅礦、 黃銅礦、 黃鐵礦、 方鉛礦、 元素硫和石英在礦漿密度分別為0.25%, 0.50%, 0.75%, 1.0%(固液比)時氧化亞鐵硫桿菌(Fe2+)的氧化活性。 結(jié)果表明: 在礦漿密度為0.25% 時, 石英對細(xì)菌(Fe2+)的氧化活性沒有影響; 而閃鋅礦、 黃銅礦、黃鐵礦、 方鉛礦以及元素硫?qū)V細(xì)菌(Fe2+)的氧化活性都有一定的抑制作用, 且隨著硫化礦礦漿密度升高,對細(xì)菌氧化活性的抑制作用加劇。
關(guān)鍵字: 硫化礦; 礦漿密度; 氧化亞鐵硫桿菌; 氧化活性; 抑制作用
(1. School of Resources Processing and Bioengineering,
Central South University, Changsha 410083, China;
2. Technology Development and Exchange Center of Nonferrous Metallurical Industry,Beijing 100841, China)
Abstract: The effects of sulfide minerals such as sphalerite, pyrite, ganela, chalcopyrite and sulfur on the growth and activity of wild and adapted acidithiobacillus ferrooxidans were studied under the common bioleaching condition of 30℃ and pH2.0. Experimental results show that the rates of oxidizing Fe2+ decrease in the 9K medium which contains sulfide minerals at four kinds of pulp density(0.25%,0.50%,0.75%,1.0%) respectively. This means that sulfide minerals used in this experiment have effects on the growth and activity of wild and adapted acidithiobacillus ferrooxidans.
Key words: sulfide minerals; pulp density; acidithiobacillus ferrooxidans; oxidation activity; bad effect


