摘要
采用二段逆流浸出—沉钒—氨溶重结晶—再提纯的工艺流程从废旧催化剂中综合回收有价金属钨、钼、钒。结果表明,控制浸出温度70℃,时间3.5h,碳酸钠浓度350g/L,液固比3∶1,钨、钼、钒浸出率均在95%以上,综合回收率可以达到90%以上。
Tungsten, molybdenum, and vanadium were comprehensively recovered from waste catalyst with a series of processes including two-stage countercurrent leaching, vanadium precipitation, recrystallization after ammonia dissolving, and purification. The results show that leaching rate of W, Mo, V is all 95% above, and comprehensive recovery is over 90% under the optimum conditions including leaching temperature of 70 ℃, leaching time of 3.5 h, sodium carbonate concentration of 350 g/L, and ratio of liquid to solid of 3 ： 1.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2014年第7期35-37,共3页
Nonferrous Metals（Extractive Metallurgy)
基金
科技部科研院所技术开发研究专项资金(2011EG115010)
关键词
废旧催化剂
钨
钼
钒
综合回收
waste catalyst
W
Mo
V
comprehensive recovery
