亚熔盐法钒渣高效清洁提钒技术  

Efficient and Cleaner Technology of Vanadium Extraction from Vanadium Slag by Sub-molten Salt Method

作　　者：郑诗礼[1] 杜浩[1] 王少娜[1] 张懿[1] 陈东辉[2] 白瑞国[2] 

机构地区：[1]中国科学院过程工程研究所,北京100190 [2]河北钢铁集团承德分公司,河北承德067002

出　　处：《钢铁钒钛》2012年第1期15-19,共5页Iron Steel Vanadium Titanium

基　　金：国家自然科学基金重大项目(51090382);国家自然科学基金国际合作项目(51011140343)

摘　　要：针对目前钒渣焙烧提钒工艺钒资源利用率低、铬无法同步提取、"三废"环境污染严重等问题,基于亚熔盐非常规介质优异的物理化学性能,通过反应分离耦合工艺设计,提出了亚熔盐法高效清洁提钒新技术。亚熔盐新技术可将钒渣分解温度由传统工艺的850℃降至200～400℃,钒一次转化率可达95%以上,铬回收率提高到80%以上,可望突破传统钒渣提钒方法的资源环境制约。To address the problems of low vanadium utilization rate during vanadium extraction process through vanadium slag roasting,unavailability of chromium and severe environment pollution caused by ＇three wastes＇,an improved efficient and cleaner technology of vanadium extraction by sub-molten salt method is introduced based on excellent physical or chemical properties of sub-molten salt and design of reaction-separation coupling process.The new sub-molten salt technology can reduce the decomposition temperature of vanadium slag to 200～400 ℃from 850 ℃ with vanadium conversion rate up to over 95% and chromium recovery rate up to over 80%,which are expected to tackle the resource and environmental problems that have bottlenecked the application of traditional vanadium extraction process.

关 键 词：钒渣 亚熔盐 钒 铬 清洁生产 

分 类 号：TF841.3[冶金工程—有色金属冶金]