提高铅银渣中难溶锌浸出率研究  

Study on Leaching Efficiency Increasing of Insoluble Zinc in Lead-silver Slag

作　　者：周先超 周娴 ZHOU Xian-chao;ZHOU Xian(Yunnan Yongchang Lead&Zinc Co.,Ltd.,Longling,Yunnan 678307,China;Kunming Metallurgical Research Institute Co.,Ltd.,Kunming,Yunnan 650031,China)

机构地区：[1]云南永昌铅锌股份有限公司,云南保山678307 [2]昆明冶金研究院有限公司,云南昆明650031

出　　处：《云南冶金》2022年第2期65-71,共7页Yunnan Metallurgy

基　　金：复杂有色金属资源清洁利用国家重点实验室开放基金(CNMRCUKF20)。

摘　　要：对云南某铅锌冶炼厂铅银渣进行了热酸浸出的试验研究,考察了添加剂种类、添加剂用量、浸出温度、终酸浓度、液固比、浸出时间对难溶锌浸出率的影响。得到硫酸铁加入量5 g/L,硫精矿用量6%,液固比5∶1,终酸浓度60 g/L,浸出温度(90~100)℃,浸出时间5 h,在此试验条件下,难溶锌浸出率可达92.31%,渣含难溶锌可控制在1.08%左右。The hot acid leaching experimental study on lead-silver slag of one Yunnan lead-zinc smelting plant was carried out in order to investigated the effect of addition agent type,addition agent dosage,leaching temperature,end acid concentration,liquid-solid ratio,leaching time on leaching efficiency of insoluble zinc.It is confirmed test conditions that the addition amount of ferric sulfate is 5 g/L,sulfur concentrate dosage is 6%,the liquid-solid ratio is 5∶1,the end acid concentration is 60 g/L,the leaching temperature is(90~100)℃,the leaching time is 5 h,under the above mentioned test conditions,the leaching efficiency of insoluble zinc can reach to 92.31%,the insoluble zinc contents in residues can be controlled around 1.08%.

关 键 词：铅银渣 热酸浸出 难溶锌 

分 类 号：TF813[冶金工程—有色金属冶金] TF803.21