高硫矿石细菌脱硫及其反应动力学分析  

Bacterial desulfurization of sulfide ores and its reaction kinetics analysis

作　　者：艾纯明[1,2] 吴爱祥[1,2] 王贻明[1,2] 王少勇[1,2] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083 [2]北京科技大学金属矿山高效开采与安全教育部重点实验室,北京100083

出　　处：《中国有色金属学报》2015年第5期1345-1354,共10页The Chinese Journal of Nonferrous Metals

基　　金：国家自然科学基金资助项目(50774011;51304011);新世纪优秀人才支持计划资助项目(NECT-07-0070)

摘　　要：为解决硫化矿井下堆存易发生自燃这一问题,进行了高含硫矿石的细菌脱硫试验,对比了不同矿石粒径条件下的脱硫效果,对脱硫反应表面进行了扫描电镜观察,并对细菌脱硫反应进行动力学分析。结果表明:细菌液计脱硫率与矿石粒径呈反比,当矿石粒径为3 mm时,取得了最大脱硫率为22.56%;脱硫反应对矿石表面侵蚀严重,矿石表面的硫含量由43%左右降低至15%以下;6组试验矿石的表面脱硫率均为65%左右,矿石的可燃性降低;反应受内扩散和化学反应共同控制,其中内扩散为主要因素。Acidophilus bacteria desulfurization column leaching was used to explore the effect of the desulfurization of metal sulfide ore and the feasibility of inhibiting the spontaneous combustion. The ore surface of the desulfurization of ore with different particles sizes and the kinetics of desulfurization were analyzed. The results show that the bacterial desulfurization rate is inversely proportional to the ore particle size. The desulfurization rate achieves the maximum of 22.56% when the ore particle size is 3mm. The sulfur content of the ore surface reduces from about 43% to 15% or less. The surface desulfurization rate of 6 groups is 65%. The ore surface is eroded severely after the desulfurization reaction. The internal diffusion influences the desulfurization reaction most, followed by the chemical reaction.

关 键 词：细菌脱硫 硫化矿 表面脱硫率 动力学 

分 类 号：TD75[矿业工程—矿井通风与安全]