ISP工艺烧结机富氧烧结改造实践  

Reforming practice of oxygen-rich sintering of sintering machine in ISP process

作　　者：翟亮 ZHAI Liang

机构地区：[1]中冶葫芦岛有色金属集团有限公司,辽宁葫芦岛125003

出　　处：《中国有色冶金》2020年第1期26-29,共4页China Nonferrous Metallurgy

摘　　要：某公司铅锌冶炼厂采用铅锌密闭鼓风炉法(ISP)生产锌和铅,需要在烧结机的原配料中加入公司积存的含锌、铅、银的中间物料,这样就出现了鼓风炉的处理量与烧结机生产能力不相匹配的问题。公司通过设备改造,采用富氧鼓风进行强化烧结焙烧,解决了这一问题,最佳富氧强化烧结焙烧试验结果:结块率从试验前19.5%左右提高至21%~22%,烧结块产量提高约10.7%;块残硫平均降低了0.2%左右,降幅16.7%;烧结块含铅下调至17.5%~18.5%区间,减少了铅精矿使用量;每天硫酸产量对比试验前提高6~20 t左右;转化器保温用电炉开动率由试验前50%左右降至最低17%左右。A company s lead-zinc smelter used the lead-zinc closed blast furnace method(ISP)to produce zinc and lead.It was necessary to add the company's accumulated intermediate materials containing zinc,lead and silver to the original ingredients of the sintering machine,and this causes the problem that the blast furnace processing capacity and the sintering machine production capacity does not match,and which was solved through equipment modification and intensive sintering roasting with oxygen-enriched blast.The results of the best oxygen-rich sintering roasting test were as follows:the caking rate increased from about 19.5%to 21%~22%,and the output of the sinter lump increased by about 10.7%;the average block residual sulfur decreased by about 0.2%,and decreased by about 16.7%;the lead content of the sinter lumps was reduced to 17.5%~18.5%,which reduced the use of lead concentrate;the daily sulfuric acid production was increased by about 6~20 t;the operating rate of the electric furnace preserving heat for the converter was reduced from about 50%to about 17%.

关 键 词：烧结机 富氧烧结 中间物料 结块率 块残硫 

分 类 号：TF813[冶金工程—有色金属冶金] TF046.4