高铅锌烟尘中砷的选择性脱除试验研究  

Experimental Study of Selective Removal of Arsenic in High Lead-zinc Fume

作　　者：张红 尹为波 肖毕高 ZHANG Hong;YIN Weibo;XIAO Bigao(Yunnan Chihong Zn&Ge Co.,Ltd.,Qujing,Yunnan 655011,China)

机构地区：[1]云南驰宏锌锗股份有限公司,云南曲靖655011

出　　处：《云南冶金》2024年第5期96-101,共6页Yunnan Metallurgy

摘　　要：针对侧吹还原熔炼炉产出的As含量高达17%且富含Pb、Zn等有价金属的烟尘,采用碱性浸出+苛化沉砷的方法选择性脱除烟尘中的As。结果表明:在NaOH浓度100 g/L、H_(2)O_(2)加入量60 mL、浸出温度60℃、浸出时间3h的条件下浸出后,对浸出后液以Ca/As摩尔比3:1进行苛化沉砷,As的脱除率为75%,Pb、Zn回收率为85%。The content of As in the production generated from side blown reduction smelting furnace reaches up to 17%,and it is rich in Pb,Zn,and other valuable metals,so alkaline leaching+Causticizing arsenic deposition method is adopted for the selective removal of As in the fume.Results show:that under the leaching conditions,the NaOH concentration is 100 g/L.The additional amount of H_(2)O_(2) was 60 mL,the leaching temperature was 60℃,the leaching time was 3 h,the causticizing arsenic deposition with Ca/As mole ratio was 3:1 for the after-leaching solution was carried out,then the removal rate of As is 75%,the recovery rate of Pb,Zn is 85%.

关 键 词：烟尘 砷 铅 锌 粗铅 

分 类 号：TQ126.41[化学工程—无机化工]