常压酸浸从废旧镍基合金中浸出镍钴  

Atmospheric Acid Leaching of Nickel and Cobalt from Nickel-base Alloy Scrap

作　　者：王治钧[1] 王靖坤[1] 郭瑞[1] 李进[1] 陈昆昆[1] 马光[1] 

机构地区：[1]西北有色金属研究院,西安710016

出　　处：《有色金属（冶炼部分）》2014年第8期5-8,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家高技术研究发展计划项目(2012AA063204)

摘　　要：以氯酸钠为氧化剂,采用常压氧化酸浸工艺从废旧镍基合金中浸出镍、钴,钨、钼、钽等稀贵元素富集在浸出渣中.结果表明,在下述最佳条件下,镍、钴的浸出率均可达到99％以上：粒度0.075～0.100mm、硫酸浓度4.5 mol/L、液固比8∶1、氯酸钠用量2.0 g（占合金废料的2％）、反应时间2.5h、反应温度（85±3）℃.Nickel and cobalt were leached from waste nickel-base alloy scrap by atmospheric acid leaching with sodium chlorate as oxidant,and tungsten,molybdenum and tantalum were enriched in residue.The results show that nickel and cobalt leaching rates are both 99％ above under the optimum leaching conditions including particle size of waste alloy scrap of 0.075～0.100 mm,concentration of sulfuric acid of 4.5 mol/L,ratio of liquid to solid of 8 ∶ 1,dosage of sodium chlorate of 2.0 g （2％ of waste alloy）,leaching time of 2.5 h,and temperature of （85±3）℃.

关 键 词：镍基合金 常压酸浸 镍 钴 回收率 

分 类 号：TF815[冶金工程—有色金属冶金] TF816