摘要
为回收含钒石油焦中的钒,采用“焙烧—球磨—硫酸熟化—水浸—水解沉钒—中和除铁铝—中和沉镍”工艺处理含钒石油焦,实现钒、镍的梯次回收。单因素条件试验结果表明:在优化后条件下,钒、镍的浸出率分别可达到93.11%、68.71%。针对沉钒渣,采用“碱溶—铵盐沉钒”工艺制备偏钒酸铵(AMV),可获得纯度大于98%的偏钒酸铵,钒总回收率为91.2%。采用两级中和工艺处理沉钒后溶液制备粗制碳酸镍,所得粗制碳酸镍含镍为19.61%,镍总回收率为64.7%。
Vanadium and nickel can be recycled in steps from V-containing petroleum coke by the process,“roasting—milling—sulfuric acid curing—water leaching—hydrolysis precipitation of vanadium—neutralization of iron and aluminum—neutralization of nickel”.The results of the single factor test indicate that under the optimized experimental conditions,leaching rates of vanadium and nickel can reach 93.11%and 68.71%,respectively.Then the ammonium metavanadate(AMV)was prepared from the vanadium precipitation by the process“alkali leaching—vanadium precipitation with ammonium salt”.The total recovery of vanadium is 91.2%and the AMV purity is more than 98%.The crude nickel carbonate was obtained from solution after hydrolysis precipitation by two stage neutralization process.The total recovery of nickel is 64.7%and the nickel content in crude nickel carbonate was 19.61%.
作者
王为振
高崇
王治飞
黄海辉
徐晓辉
靳冉公
WANG Wei-zhen;GAO Chong;WANG Zhi-fei;HUANG Hai-hui;XU Xiao-hui;JIN Ran-gong(BGRIMM Technology Group,Beijing 100160,China)
出处
《矿冶》
CAS
2023年第3期124-129,共6页
Mining And Metallurgy
基金
钒钛国家重点实验室开放基金资助项目(2021P4FZG02A)。
关键词
石油焦
钒镍
偏钒酸铵
碳酸镍
硫酸熟化
水解
铵盐沉钒
中和
petroleum coke
vanadium and nickel
ammonium metavanadate
nickel carbonate
sulfuric acid curing
hydrolysis
vanadium precipitation with ammonium salt
neutralization
