从酸泥浸铅渣中综合回收有价金属试验研究  

Comprehensive Recovery of Valuable Metals from Lead Leaching Residue of Acid Mud

作　　者：张琼[1] 罗世金 贺康锦 杨林波 向朝瑞 罗文波 ZHANG Qiong;LUO Shijin;HE Kangjin;YANG Linbo;XIANG Chaorui;LUO Wenbo(Faculty of Materials and Energy Engineering,Guizhou Institute of Technology,Guiyang 550003,China)

机构地区：[1]贵州理工学院材料与能源工程学院,贵州贵阳550003

出　　处：《湿法冶金》2025年第1期59-64,共6页Hydrometallurgy of China

摘　　要：酸泥浸铅渣中含有大量复杂稀散贵金属,具有极高的回收价值。研究了以盐酸+硫酸为浸出剂、氯酸钠为氧化剂从酸泥浸铅渣中同时浸出硒、铋、铜、汞,考察了温度、氯酸钠用量、浸出时间、液固体积质量比、盐酸浓度对硒、铋、铜、汞浸出率的影响。结果表明:在温度40℃、氯酸钠用量为原料质量的40%、浸出时间1 h、液固体积质量比4 mL/1 g、盐酸浓度1 mol/L、硫酸浓度1.5 mol/L条件下,硒、铋、铜、汞浸出率分别为98.78%、98.13%、99.38%、99.42%。该法可实现硒、铋、铜、汞的高效浸出,同时使留存于渣中的锡、铅、银得到较好富集。Lead leaching residue of acid mud contains a large number of complex and scattered precious metals,which has high recovery value.The leaching of selenium,bismuth,copper and mercury from lead leaching residue using a mixture of hydrochloric acid and sulfuric acid as the leaching agent and sodium chlorate as the oxidizing agent was studied.The effects of temperature,dosage of sodium chlorate,leaching time,liquid volume to solid mass ratio and hydrochloric acid concentration on the leaching rates of selenium,bismuth,copper and mercury were investigated.The results show that under the conditions of temperature of 40℃,dosage of sodium chlorate as 40%of raw material mass,leaching time of 1 h,liquid volume to solid mass ratio of 4 mL/1 g,hydrochloric acid concentration of 1 mol/L and sulfuric acid concentration of 1.5 mol/L,the leaching rates of selenium,bismuth,copper and mercury are 98.78%,98.13%,99.38%and 99.42%,respectively.The method can achieve high efficiency leaching of selenium,bismuth,copper and mercury,and enrich the tin,lead and silver in the residue.

关 键 词：酸泥 铅 浸出渣 浸出 盐酸 氯酸钠 有价金属 

分 类 号：TF803.21[冶金工程—有色金属冶金]