大容积富锰渣炉回收铅银锌的工艺技术及实践  

TECHNOLOGY AND PRACTICE OF RECYCLING LEADꎬSILVER AND ZINC IN LARGE-VOLUME MANGANESE-RICH SLAG FURNACE

作　　者：雷金碧 梁宇蕾 刘建勇 LEI Jinbi;LIANG Yulei;LIU Jianyong(Ningxia Shengyan Energy Circular Economy Co.,Ltd.,Ningxia Shizuishan 753200,China)

机构地区：[1]宁夏晟晏集团能源循环经济有限公司,宁夏石嘴山753200

出　　处：《铁合金》2024年第6期10-15,共6页Ferro-alloys

摘　　要：随着锰硅合金生产工艺的不断创新,高炉冶炼富锰渣技术不断成熟,逐步淘汰简陋的装备,炉容由最初的5 m^(3)逐步扩至目前最大450 m^(3),炉顶设备由最初简易的手动单钟式已逐步过渡到目前全自动钟阀式和无料钟环保高压型炉顶。但随着装备水平的提高和环保节能产业政策的限制,高炉冶炼富锰渣工艺技术已偏离最初的工艺路线,仅限于主要处理国外高铁贫锰矿(如:南非高铁、印度高铁、澳洲高铁等),对于国内外大部分待富集回收的含铅、银及锌的贫锰矿资源无法得到有效回收利用.原因是100 m^(3)级以上富锰渣炉回收铅银锌的工艺技术不成熟,导致富锰渣炉的运行维护成本远大于回收铅银获得的经济效益,现结合宁夏晟晏公司128 m^(3)、350 m^(3)富锰渣炉回收铅银锌的冶炼实践及工艺技术,从炉底铅银道的设计砌筑、入炉结构的调整及操作工艺制度的完善进行工艺浅析.With the continuous innovation of the production process of ferromanganese-silicon,the maturity of blast furnace smelting technology for manganese-rich slag,and the gradual elimination of rudimentary equipment,the furnace capacity has gradually expanded from the initial 5 m^(3)to the current maximum 450 m^(3),and the furnace roof equipment has gradually transitioned from the initial simple manual single bell type to the current fully automatic bell-valve type and bell-less environmental protection high-pressure type.However,with the improvement of the equipment and the restrictions of environmental protection and energy-saving industry policies,the technology of smelting manganese-rich slag in blast furnaces has deviated from the original process route and is only limited to mainly processing foreign iron-rich poor manganese ore(such as South African,Indian,Australia,etc.).For most of the domestic and foreign manganese ore resources containing lead,silver,and zinc that need to be enriched and recovered,they cannot be further effectively recovered and utilized.The reason is that the process technology for recovering lead,silver,and zinc from manganese-rich slag furnaces with a capacity of over 100 m^(3)is not mature,resulting in the operation and maintenance costs of the manganese-rich slag furnace far exceeding the economic benefits obtained from recovering lead and silver.Based on the smelting practice and process technology of 128 m^(3)and 350 m^(3)manganese-rich slag furnaces for recovering lead,silver,and zinc in Ningxia Shengyan Company,this article conducts a process analysis from the design and mason-ry of lead and silver channel at the furnace bottom,the adjustment of entering furnace structure,and the improvement of the operating process system.

关 键 词：富锰渣炉 冶炼原理 铅银道 操作制度 入炉结构 经济效益 

分 类 号：TF642[冶金工程—钢铁冶金]