从铜镉渣中提取海绵镉的试验研究  

STUDY ON EXTRACTION OF SPONGE CADMIUM FROM COPPER CADMIUM SLAG

作　　者：汤顺贤 陈科彤[2] 万宁[3] 倪天斌 张永平[2] 

机构地区：[1]云南驰宏锌锗股份有限公司,云南曲靖655000 [2]昆明冶金研究院,昆明650031 [3]昆明理工大学冶金与能源工程学院,昆明650093

出　　处：《矿冶》2014年第5期65-68,共4页Mining And Metallurgy

摘　　要：锌粉置换过程是处理铜镉渣提取海绵镉的重要环节。对铜镉渣提取海绵镉原理及生产工艺进行了简单介绍,对锌粉置换过程中置换温度、锌粉用量、置换时间、搅拌强度进行了试验探索。研究表明,置换温度50℃、锌粉用量为理论用量的1.2倍、搅拌速率为80 r/min、置换时间20 min、澄清时间40min的条件下,海绵镉的品位可达到78.7%。采用多点加入锌粉的方式,可以减少海绵镉夹杂现象,提高海绵镉的品位。Zinc dust precipitation process is an important step in extracting sponge cadmium from copper cadmium slag,the principle and production process of extraction of sponge cadmium from copper cadmium slag are introduced. The temperature of replacement,consumption of zinc powder,reaction time,stirring intensity in zinc dust precipitation process are studied. The results show that： the sponge cadmium grade can reach 78. 7% under the condition of the temperature being 50 ℃,the consumption of zinc powder 1. 2 times of theory,stirring intensity80 r / min,the time of precipitation 20 min and the clarification time 40 min. The multipoint method of zinc powder input can reduce impurities in the sponge cadmium mixture,improving grade of the product.

关 键 词：湿法炼锌 铜镉渣 海绵镉 置换 品位 

分 类 号：X756[环境科学与工程—环境工程] TF819.2[冶金工程—有色金属冶金]