低品位钒矿直接酸浸提钒工艺研究

来源期刊：钢铁钒钛2010年第3期

论文作者：李欣 王毅 朱军

文章页码：10 - 14

关键词：钒矿； 物理选矿； 直接酸浸； 钒浸出率

Key words：vanadium ore； physical dressing； acid leaching； leaching rate of vanadium

摘    要：针对提钒工艺现状存在问题,根据物理选矿结果,确定了抛尾富集物酸法直接浸出钒的工艺方法。通过浸出试验,对酸浸提钒阶段各影响因素进行优化。确定了适宜的磨矿粒度、酸度、浸出温度、液固比和浸出时间等工艺条件,钒的浸出率可达到90%以上。

Abstract: According to the problems existing in current process for extracting vanadium,the screening classification of a low-grade vanadium ore were investigated,and the acid leaching process for vanadium extraction from the vanadium ore concentrated for tailing discarding was researched based on the mineralogy and physical dressing.The parameters in leaching process had been analyzed and optimized in experiments,and the suitable process conditions were determined including grinding fineness,the concentration of sulfuric acid,leaching temperature,liquid-solid ratio and leaching time.The leaching rate of vanadium can be over 90% under the optimum conditions.