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我厂对粗铋火法精炼的“粗铋熔化”和“加硫除铜”作业,进行了小改革——由捞取粉末状熔化渣和除铜渣改为捞取熔化稀渣和除铜稀渣。实践表明,改革后的熔化渣量比改革前减少50～60％,渣中铋总量减至1/6～1/8,熔化作业直收率提高1～2％;改革后的除铜渣中铋总量比改革前减至1/80～1/100,除铜作业直收率提高3～5％,现简介如下:
I plant crude bismuth fire refining “rough bismuth melting” and “sulfur and copper removal” operation, a small reform - from the fishing of powdery slag and copper slag in addition to remove the molten slag and remove the copper slag . Practice shows that the amount of molten slag after the reform is reduced by 50-60% compared with that before the reform, the total amount of bismuth in the slag is reduced to 1/6 to 1/8, and the straight-line yield of the melting operation is increased by 1-2%. The reformed copper slag The total amount of bismuth reduced to 1/80 ~ 1/100 than before the reform, in addition to straight copper operation increased by 3 to 5%, are summarized as follows: