软锰矿、菱锰矿吸收烧结烟气中的SO_2制取硫酸锰  

Study on Production of Manganese Sulfate by Absorption of SO_2 From Sintering Fume With Pyrolusite and Mild Manganese

作　　者：吴复忠[1] 蔡九菊[1] 张琦[1] 王建军[1] 葛红[1] 

机构地区：[1]东北大学国家环境保护生态工业重点实验室,辽宁沈阳110004

出　　处：《钢铁》2007年第4期78-82,共5页Iron and Steel

基　　金：国家重点基础研究发展计划(973)专项基金资助项目(2005CB724206)

摘　　要：现代钢铁联合企业的高炉-转炉流程是铁-煤化工过程,针对该流程中烧结工序排放含二氧化硫烟气的特点,采用软锰矿、菱锰矿脱硫制取硫酸锰。采用菱锰矿调节和控制矿浆的pH值,利用软锰矿中MnO2的氧化性和SO2的还原性,用软锰矿矿浆在填料吸收塔内进行脱硫试验。试验结果表明:二氧化硫的吸收率在95%以上,该工艺还具有湿法除尘的特性,对烟尘的吸收率达90%以上,且副产品硫酸锰的质量能达到工业级,是一种真正实现“综合治理、变废为宝”的脱硫新技术。The BF-converter route of steelmaking is a chemical process of iron and coal. Sulfur dioxide is released in sintering process which can be absorbed by pyrolusite and mild manganese to produce manganese sulfate. The experiments of removal of SO2 with pyrolusite and mild manganese were performed, and the pH scale of pulp was con- trolled; utilizing the oxidability of MnO2 and reducibility of SO2, the pyrolusite pulp was put into the absorption tower of padding. The above-90% absorptivity of flue dust indicated that wet dust collection was available to this technique, in which the absorptivity of SO2 was above 95 %, and the by-product technical grade manganese sulfate was produced. The technique is proved to be a new technology on： removal of SO2, for waste treatment.

关 键 词：烧结烟气 软锰矿 菱锰矿 脱硫 硫酸锰 

分 类 号：X756[环境科学与工程—环境工程]