摘要
以攀钢和承钢提钒尾渣为研究对象,通过对尾渣成分、物相和形貌结构的分析,在结合前人研究的基础上,归纳得到了国内提钒尾渣中钒的存在价态及可能物相。通过总结近年来不同提钒尾渣(以低价钒为主的攀钢提钒尾渣和以高价钒为主的承钢提钒尾渣)再提钒技术的研究进展,将提钒尾渣再提钒的关键问题总结为"外包裹硅酸盐矿物的分解、残留钒铁尖晶石结构的破坏和尾渣中低价钒的氧化"三种控制环节的选择性强化,通过与现有尾渣再提钒技术的对比,提出了不同类型的提钒尾渣需采用不同的再提钒工艺。
The composition,phase and morphology of vanadium-bearing tailings from Pan Steel and Cheng Steel were studied in this paper. Combining with the previous studies by others,the valences and possible phases of vanadium in the residue were obtained. By the induction of the research progress of extracting vanadium from low and high valence vanadium tailings respectively from Panzhihua and Chengde,it is concluded that the key issues of extracting vanadium from vanadium tailings are the selective strengthening of the three controlled steps： the decomposition of outer silicate mineral,the structure destruction of residual vanadium iron spinel and the oxidation of low valence vanadium in the tailings. Thus,it is proposed that different extracting methods should be employed according to the characteristics of the specific tailings.
出处
《钢铁钒钛》
CAS
北大核心
2015年第3期49-56,共8页
Iron Steel Vanadium Titanium
基金
国家重点基础研究发展计划(2013CB632605)
国家自然科学基金(51274179)
中国科学院重点部署项目(KGCX2-EW-215)
关键词
提钒尾渣
再提钒
酸浸
碱浸
vanadium-bearing tailings
secondary vanadium extraction
acid leaching
alkaline leaching
