脆硫铅锑矿精矿的还原造锍熔炼

来源期刊：中南大学学报(自然科学版)2003年第5期

论文作者：唐朝波 唐谟堂 姚维义 杨声海 何静 彭及

文章页码：502 - 505

关键词：脆硫铅锑矿;固硫;还原造锍熔炼

Key words：jamesonite concentrate; fixed sulfur; reducing-matting smelting

摘    要：采用富含氧化铁的黄铁矿烧渣作为固硫剂的铅、锑、铋还原造锍熔炼方法,对脆硫铅锑矿精矿还原造锍熔炼的工艺进行了研究,考察了温度、添加剂加入量、烧渣加入量等对还原造锍熔炼工艺的影响,得出最佳工艺条件为:先在900℃下反应,再升温到1 200℃过热放渣;烧渣加入量为理论量的100%~105%;添加剂与苏打质量比为10%,无水硫酸钠为13%(质量分数).在最佳条件下,锑直收率为83.26%,铅直收率为68.50%,固硫率为98.97%,但约有15%的铅和30%的银分散在铁锍中.

Abstract: A new smelting process of lead, antimony ,and bismuth sulfides concentrates with free sulfur dioxide reducing-matting smelting by use of pyrite cinder as a fixed sulfur agent was used to study reducing-matting smelting of jamesonite concentrate. The effect of process conditions such as the smelting temperature, the amount of pyrite cinder, the amount of additive on smelting process were studied . Under the optimum condition, the directly recovery ratios of antimony and lead are 83.26% and 68.50%,respectively, the ratio of sulfur fixed is 98.97%, and about 15% (mass fraction) lead and 30% silver remain in ferrous matte.