电解金属锰阳极泥的综合回收利用研究

A Research on Comprehensive Recycling of Electrolytic Manganese Anode Slime

电解金属锰阳极泥中Mn含量在40%~50%,Pb含量达3%~5%,是一种很好的锰资源和铅资源。采用电解金属锰阳极泥为氧化剂,葡萄糖为还原剂,在硫酸溶液中还原浸出阳极泥中的锰,以酸性含锰溶液回收阳极泥中锰的同时,得到以硫酸铅为主成份的浸出渣。试验考察了糖矿比、酸矿比、反应时间、反应温度对锰浸出及铅富集效果的影响。结果表明,在糖矿比0.13、酸矿比1.26、反应时间4 h、反应温度90℃的条件下,阳极泥中锰的浸出率可达99%以上,通过浸出富集,渣中铅品位达43%以上,达到电解金属锰阳极泥综合回收利用的目的。

Electrolytic manganese anode slime,with 40% ~ 50% manganese and 3% ~ 5% lead,is an excellent resource for manganese and lead. The paper took electrolytic manganese anode slime as an oxidizing agent and glucose to reduce manganese from the anode slime into the lixivium. When this process occurred in the sulfuric acid solution,lead in the anode slime would become lead sulfate into the leaching slag. After investigating the effects of mass ratio of glucose-to-ore,including mass ration of acid-to-ore,reaction time,reaction temperature on the manganese leaching and accumulation of lead,it was found that when the mass ratio of glucose-to-ore was 0. 13,the mass ration of acid-to-ore was 1. 26,the reaction time was 4 h,and the reaction temperature was 90℃,the recovery rate of manganese from the anode slime could reach over 99%. Through leaching accumulation,the lead concentration in the leaching slag could reach over 43%. In such a way,electrolytic manganese anode slime could be comprehensively recycled.