闪锌矿微生物浸出过程溶解动力学研究进展  

Research Progress on Dissolution Kinetics in Sphalerite Bioleaching Process

作　　者：童格 顾帼华[1] 王艳红 黄娇 巫銮东[2] TONG Ge;GU Guohua;WANG Yanhong;HUANG Jiao;WU Luandong(School of Resource Processing and Bioengineering,Central South University,Changsha 410083,China;Zijing Mining Group Co.,Ltd.,Shanghang 364200,China)

机构地区：[1]中南大学资源加工与生物工程学院,长沙410083 [2]紫金矿业集团股份有限公司,福建上杭364200

出　　处：《有色金属工程》2022年第6期75-82,共8页Nonferrous Metals Engineering

基　　金：国家自然科学基金资助项目(51934009);湖南省自然科学基金资助项目(2019JJ50835)。

摘　　要：锌是国民经济建设中重要的战略性矿产资源,具有不可替代的重要作用。随着低品位难处理矿产资源种类和产量的不断增加,以及资源开发带来的环境污染问题日益突出,生物浸出技术由于具备工艺流程简单、无污染、能够处理低品位矿石等优点,在该类型矿产资源中得到了广泛应用。闪锌矿作为主要的含锌矿物之一,在生物浸出过程中存在反应周期长、溶解动力学缓慢等问题,亟待突破。重点介绍了“收缩核模型”在闪锌矿动力学方面的应用,阐述了浸矿细菌的种类、Fe^(2+)浓度、温度等因素对矿物溶解过程的影响,揭示了生物浸出体系下影响矿物溶解动力学的速度控制步骤及关键因素,并对闪锌矿微生物浸出溶解动力学的研究方向进行了展望。Zinc is an important strategic mineral resource in national economic construction and plays an irreplaceable role.With the increasing types and yields of low-grade refractory mineral resources,and the increasingly prominent environmental pollution problems caused by resource development,bioleaching technology has been widely used in these types of mineral resources due to its advantages of simple process flow,less pollution,and ability to deal with low-grade ores.As one of the main zinc-containing minerals,sphalerite has problems such as long reaction period and slow dissolution kinetics in the leaching process,which needs to be broken through urgently.This paper focuses on the application of the“shrinking core model”in the kinetics of sphalerite.The effects of different bioleaching bacteria,Fe^(2+) concentration,temperature,and other factors on the dissolution process of minerals were discussed.The rate-control steps and key factors affecting the dissolution kinetics of minerals in the bioleaching system were revealed.The research direction of the dissolution kinetics of sphalerite bioleaching is prospected.

关 键 词：闪锌矿 生物浸出 溶解动力学 模型 速度控制步骤 

分 类 号：TF11.31[冶金工程—冶金物理化学]