预处理对铜钴铁合金中钴浸出率的影响  

Effects of Pre-treatment on Cobalt Leaching Rate from Cu-Co-Fe Alloy Powder

作　　者：彭忠东[1] 万文治[1] 胡国荣[1] 李国[1] 周玉琳[1] 

机构地区：[1]中南大学冶金科学与工程学院,湖南长沙410083

出　　处：《有色金属（冶炼部分）》2007年第6期20-23,共4页Nonferrous Metals（Extractive Metallurgy)

摘　　要：主要研究了铜钴铁合金掺CaCO3焙烧对合金中钴浸出率的影响。合金分别添加5%、10%、15%、20%的CaCO3在900℃、1 000℃1、100℃、1 200℃、1 300℃下煅烧保温10 h,底层金属富集区与上层渣分离后破碎筛分,溶于H2SO4中。结果表明合金粉在900℃、1 000℃、1 100℃下煅烧时,钴浸出率随CaCO3添加量增加而提高;合金粉添加10%CaCO3在1 300℃下煅烧后浸出,钴浸出率达到峰值,约为95%,其后钴浸出率随CaCO3添加量增加而下降。Effect of roasting by adding CaCO3 during leaching Cu-Co-Fe alloy powder was investigated. Alloy powder, which added CaCO3 individually at the amount of 5 % to 20 %, was calcined at 900～ 1 300℃ for 10 h. Metal phase was separated from slag, broken, and then dissolved in sulfuric acid. Results show that cobalt leaching rates increased when more CaCO3 was added at 900℃, 1 000℃, 1 100℃ ; cobalt leaching rates reached peak value about 95% when alloy powder was roasted at 1 300℃by adding 10% CaCO3, losses of cobalt during roasting were rapid increased when CaCO3 was more than 10%, leading to lower leaching rate of cobalt.

关 键 词：铜钴铁合金粉 CACO3 钴浸出率 

分 类 号：TF802.67[冶金工程—有色金属冶金]