钢铁钒钛2025，Vol.46Issue(4)：1-7,7.DOI:10.7513/j.issn.1004-7638.2025.04.001
钒渣高效提取冶金:钙镁复合焙烧提钒工艺
Efficient extraction metallurgy of vanadium slag:calcium-magnesium composite roasting vanadium extraction process
摘要
Abstract
The calcification process is a relatively clean vanadium extraction technology from vana-dium slag,but there is still room for further improvement in vanadium yield and product index.The cal-cium-magnesium composite vanadium extraction process originally developed by our team has achieved the effect of improving vanadium recovery rate,reducing impurity dissolution rate and tailings reduc-tion through ion synergistic effect.In this paper,the comprehensive influence of calcium-magnesium composite on the whole process of vanadium extraction from vanadium slag is expounded.After calci-um-magnesium composite roasting,the main vanadium-containing phases in the roasting clinker of va-nadium slag are changed from Ca2V2O7 and Mn2V2O7 to Ca2V2O7,Mn2V2O7,Mg2V2O7 and Ca5Mg4V6O24.After acid leaching,the leaching rate of vanadium was increased by about 5％,and the dissolution rate of impurity elements such as Ca and P decreased.The vanadium precipitation rate of ammonium salt in vanadium leaching solution was 99.5％,and the purity of vanadium oxide product was 99.8％.The vanadium precipitation wastewater can be completely reused after lime neutralization treatment without affecting the smooth operation of the original process.关键词
钒渣/钙镁复合焙烧/提钒/回收率Key words
vanadium slag/calcium-magnesium composite roasting/vanadium extraction/recovery分类
矿业与冶金引用本文复制引用
ZHANG Xu,XIANG Junyi,SHEN Biao,HE Wenyi,WEI Linsen,LÜ Xuewei..钒渣高效提取冶金:钙镁复合焙烧提钒工艺[J].钢铁钒钛,2025,46(4):1-7,7.基金项目
国家自然科学基金(52004044) （52004044）
重庆科技大学研究生创新计划项目(YKJCX2420220). （YKJCX2420220）
