高温合金酸浸渣氧化焙烧—碱浸工艺研究  

Study on Oxygen Roasting and Alkali Leaching of Acid Leaching Slag of Waste Superalloy

作　　者：吴永谦[1] 吴贤[1] 陈昆昆[1] 张卜升[1] 郭瑞[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）》2015年第8期43-45,58,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：采用氧化焙烧—碱浸工艺提取某废旧高温合金酸浸渣中的钨。考察了焙烧温度、焙烧时间、氢氧化钠浓度、浸出温度及浸出时间等对钨浸出率的影响。结果表明,在下述最佳工艺条件下,钨浸出率可达98%以上:焙烧温度700℃、焙烧时间60min、氢氧化钠浓度160g/L、浸出温度85℃、液固比3、浸出时间60min。Tungsten was recovered from acid leaching slag of waste superalloy by oxygen roasting and alkali leaching.The effects of roasting temperature,roasting time,NaOH concentration,leaching temperature,leaching time on tungsten leaching rate were investigated.The results show tungsten leaching rate is 98%above under the optimum conditions including roasting temperature of 700 ℃,roasting time of 60 min,NaOH concentration of 160g/L,leaching temperature of 85 ℃,L/S=3∶1,and leaching time of 60 min.

关 键 词：高温合金 焙烧 碱浸 钨 

分 类 号：TF841.1[冶金工程—有色金属冶金]