电化学溶解镍基高温合金废料的研究  

Study on Electrochemical Dissolution of Nickel Base Superalloy Scraps

作　　者：李波[1] 朱军[1] 李进 许万祥 郭瑞[3] 

机构地区：[1]西安建筑科技大学冶金工程学院,西安710055 [2]西安瑞鑫科金属材料有限公司,西安710016 [3]西北有色金属研究院,西安710016

出　　处：《有色金属（冶炼部分）》2015年第5期51-54,共4页Nonferrous Metals（Extractive Metallurgy)

基　　金：国家高技术研究发展计划(863计划)项目(2012AA063204)

摘　　要：采用电化学溶解法对含Co、Cr、Al、W、Mo、Hf等金属的镍基高温合金废料在硫酸中的溶解过程进行研究。考察了电流密度、电解液酸度、温度、电解液Ni 2+浓度对电解过程的影响。结果表明,在阳极电流密度300A/m2、硫酸浓度1mol/L、电解液温度40℃的条件下平均槽电压为2.4V,电解1t合金的能耗为2 083kWh,电流效率98.46%。与硫酸体系相比,盐酸体系下稀散金属能在阳极泥中得到更好的富集。Dissolution process of Co, Cr, W, Al, Mo and Hf bearing nickel-base superalloy scraps in sulfuric acid solution was studied by electrochemical dissolution. The effects of current density, acidity, temperature and Niz＋ concentration on electrochemical dissolution were investigated. The results show that the average cell voltage is 2.4 V and energy consumption is 2 083 kwh with current efficiency of 98.46% for one ton alloy scraps under the optimum conditions including current density of 300 A/m^2 , H2SO4 acidity of 98 g/L, and temperature of 40 ℃. Scattered metals can get higher enrichment in anode slime in hydrochloric acid system than in sulfuric acid system.

关 键 词：电化学溶解 镍基高温合金废料 富集 

分 类 号：TF841[冶金工程—有色金属冶金] TF803.27