微生物浸出反应硫化铜矿石表面形态特征显微分析  

Microscopic analysis of surface characteristics of sulfide copper ore in its bacteria leaching reaction

作　　者：江怀春[1] 吴爱祥[1] 习泳[2] 苏永定[1] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083 [2]中国有色工程设计研究总院,北京100038

出　　处：《化工矿物与加工》2007年第3期12-14,21,共4页Industrial Minerals & Processing

基　　金：973国家重点基础研究发展规划项目(2004CB619200);国家杰出青年基金项目(50325415);国家创新群体项目(50321402)

摘　　要：通过光学显微镜和电子显微镜分析了硫化铜原矿样和经摇瓶浸出反应后的矿样表面形态变化特征。结果表明:两个矿样的铜的浸出率、TFe离子质量浓度均随着浸出逐渐上升,粒径较小的矿样浸出率较大。未经浸出反应的原矿样表面比较平整,微观尺度上的孔隙、孔洞很少;浸出反应后,矿石表面吸附有大量细菌,表面变得凹凸不平,大量目的金属元素被浸出。Using optical microscopes and electron microscope, the changes of surface characteristics of sulfide copper ore were analyzedbefore and after shaking flask reaction. The results showed that two kinds of copper ore＇s extraction rates and TFe ion concentrations increased gradually with increase of leaching time, and the extraction rate of smaller size ore was greater. The surface of undressed ore was smooth, whieh had little micro-scale pores and cavities; after leaching, the ore surface had adsorbed a large number of bacteria, .so it became rugged and a lot of target elements were extracted out.

关 键 词：微生物浸出 硫化铜 显微分析 吸附 

分 类 号：TF18[冶金工程—冶金物理化学]