Effect of vanadium occurrence state on the choice of extracting vanadium technology from stone coal
来源期刊：Rare Metals2008年第2期
论文作者：WANG Mingyu XIANG Xiaoyan ZHANG Liping XIAO Liansheng School of Metallurgical Science and Engineering,Central South University,Changsha ,China
文章页码：112 - 115
摘 要：<正>The extraction technology of vanadium from stone coal by means of no-salt-roasting and dilute acid solution leaching treatment has the ad- vantages of low pollution,low investment,as well as high vanadium leaching efficiency,which makes it the best technology for extending application.In the present study,the effects of vanadium occurrence state in stone coal,roasting temperature and additive agent on the leach- ing efficiency of vanadium were studied.The results indicate that the effect of vanadium occurrence state on the extracting vanadium tech- nology is obvious.If the vanadium component in stone coal existed in amorphous phase form,this type of stone coal can be treated by no-slat-roasting and dilute acid solution leaching technology;while the vanadium-bearing crystalline phase existed in stone coal,the roasting additive must be added to destroy this crystalline form so as to acquire high vanadium leaching rate.
WANG Mingyu XIANG Xiaoyan ZHANG Liping XIAO Liansheng School of Metallurgical Science and Engineering,Central South University,Changsha 410083,China
摘 要：<正>The extraction technology of vanadium from stone coal by means of no-salt-roasting and dilute acid solution leaching treatment has the ad- vantages of low pollution,low investment,as well as high vanadium leaching efficiency,which makes it the best technology for extending application.In the present study,the effects of vanadium occurrence state in stone coal,roasting temperature and additive agent on the leach- ing efficiency of vanadium were studied.The results indicate that the effect of vanadium occurrence state on the extracting vanadium tech- nology is obvious.If the vanadium component in stone coal existed in amorphous phase form,this type of stone coal can be treated by no-slat-roasting and dilute acid solution leaching technology;while the vanadium-bearing crystalline phase existed in stone coal,the roasting additive must be added to destroy this crystalline form so as to acquire high vanadium leaching rate.
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