摘要
以凤凰县石煤钒矿为原料,经焙烧后采用氢氧化钠溶液浸出,得到V(Ⅳ)质量分数为98.10%的+4价石煤钒矿,在硫酸用量35%、液固比1∶1、浸出温度95℃和时间10 h条件下,+4价石煤钒矿中钒的浸出率为81.8%,研究了+4价态含钒石煤钒矿直接浸出动力学,结果表明:在实验温度范围内,钒的浸出过程符合混合控制过程,近似求得其反应表观活化能为32.92 kJ/mol。
TheⅣvalence stone coal vanadium ore which contained V(Ⅳ)of 98.10%was prepared by leaching with sodium hydroxide solution after roasting,the stone coal vanaium ore came from Fenghuang county.Under the conditions of sulfuric acid dosage 35%,liquid-solid ratio 1∶1,leaching temperature 95℃and leching time 10 h,the leching rate of vanadium in theⅣvalence stone coal vanadium ore was 81.8%.The direct leaching kinetics ofⅣvalence stone coal vanadium ore was investigated.The result shows that the leaching process conformsd to the mixed control in the range of experimental temperature,and the apparent activation energy has been obtained approximately 32.92 kJ/mol.
作者
华骏
蔡俊
颜文斌
高峰
李丽洁
邹姣
HUA Jun;CAI Jun;YAN Wen-bin;GAO Feng;LI Li-jie;ZOU Jiao(College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,Hunan Province,China;The Collaborative Innovation Center of Manganese-Zinc-Vanadium Industrial Technology(the 2011 Plan of Hunan Province),Jishou 416000,Hunan Province,China;Key Laboratory of Mineral Cleaner Production and Exploit of Green Functional Materials in Hunan Province,Jishou 416000,Hunan Province,China)
出处
《化学工程》
CAS
CSCD
北大核心
2020年第7期68-72,共5页
Chemical Engineering(China)
基金
国家自然科学基金资助项目(21566010)
湖南省自然科学基金资助项目(2018JJ3413)
“锰锌钒产业技术”湖南省2011协同创新中心开放基金项目“MXF201918”资助。
关键词
石煤钒矿
直接浸出
动力学
表观活化能
stone coal vanadium ore
direct leaching
kinetics
apparent activation energy
