DOC《低品位软锰矿还原技术的研究进展》

低品位软锰矿还原技术的研究进展 李康强1,李鑫培1,和飞1,陈2,3,陈晋1* (1.

昆明理工大学非常规冶金教育部重点实验室,云南昆明 650093;

2.云南民族大学云南省高校民族地区资源清洁转化重点实验室,云南昆明 650500;

3.中南大学锰资源高效清洁利用湖南省重点实验室,湖南长沙 410083) 摘要:锰在钢铁工业、有色冶金、电池、电子等领域的应用日益广泛.为提高大量低品位软锰矿的资源利用率,特别是由软锰矿生产一氧化锰工艺的优化,进一步降低生产成本,从而推进低品位锰矿资源的高效利用和锰系产品的质量升级.本文对近年来低品位软锰矿的还原工艺及研究进展进行了综述,同时针对不同的低品位软锰矿湿法浸出工艺,重点介绍其还原剂的选择和应用,为合理开发利用不同的低品位软锰矿提供了理论依据. 关键词: 低品位软锰矿;

微波还原;

直接还原浸出;

生物质热解还原 Review of reduction technology of low grade pyrolusite LI Kangqiang1, LI Xinpei1, HE Fei1, CHEN Guo2,3, CHEN Jin1,* (1. Key laboratory of Unconventional Metallurgy, Ministry of Education, Kunming University of Science and Technology, Kunming, Yunnan 650093, China;

2. Key Laboratory of Resource Clean Conversion in Ethnic Regions, Education Department of Yunnan, Yunnan Minzu University, Kunming, Yunnan 650500, China;

3. Hunan Provincial Key Laboratory of Efficient and Clean Utilization of Manganese Resources, Central South University, Changsha, Hunan 410083, China) Abstract: Manganese has been widely applied in the steel industry, non-ferrous metallurgy, batteries, electronics and other fields. Therefore, for improving the resource utilization rate of a large number of low-grade pyrolusite, especially the optimization of the process of producing manganese monoxide from pyrolusite, and reducing the production cost, further to promote the efficient utilization of low-grade manganese ore resources and the quality upgrade of manganese products, the reduction process and research progress of low-grade pyrolusite in recent years were reviewed in this paper;

moreover, the selection and application of reducing agent in wet leaching low-grade pyrolusite process were introduced, aiming at providing a theoretical basis for the rational development and utilization of different low-grade pyrolusite. Keywords: low-grade pyrolusite;

microwave reduction;

direct reduction leaching;

biomass pyrolysis reduction 0引言锰是重要的是国家战略储备资源.90%用于钢铁工业,锰合金是从"铁"到 "钢"转化过程中必不可少的原料,故有"无锰不成钢"之说.?而一氧化锰是生产电解锰、硫酸锰等其他锰盐的原料,在催化剂[1]、电极材料[2]、磁性材料[3]等领域应用广泛,近年来其制备技术及工艺优化成为较为热门的研究课题. 工业生产中上主要采用氧化锰矿制备一氧化锰.然而大多数高品位氧化锰矿(Mn>40%)主要分布在南非、乌克兰、印度、澳大利亚、加蓬和巴西等少数几个国家[4].我国锰矿主要为低品位氧化锰矿(Mn