陕西某地石煤钒矿制备五氧化二钒产品工艺研究  

Processing Technique for Preparing Vanadium Pentoxide with Vanadium-Containing Stone Coal from Shaanxi

作　　者：吴天骄 康敏 梁效 程倩 李英 宁新霞 张圆明 WU Tianjiao;KANG Min;LIANG Xiao;CHENG Qian;LI Ying;NING Xinxia;ZHANG Yuanming(Xi′an Northwest Institute of Nonferrous Geology Co.,Ltd.,Xi′an 710055,Shaanxi,China;Shaanxi Provincial Engineering Research Center for Comprehensive Utilization of Mineral Resources,Xi′an 710055,Shaanxi,China)

机构地区：[1]西安西北有色地质研究院有限公司,陕西西安710055 [2]陕西省矿产资源综合利用工程技术研究中心,陕西西安710055

出　　处：《矿冶工程》2024年第5期133-136,共4页Mining and Metallurgical Engineering

摘　　要：采用硫酸熟化-水浸工艺从石煤钒矿中提钒,考察了熟化条件及浸出条件对钒浸出率的影响。结果表明,适宜的熟化工艺条件为:熟化温度130℃、熟化时间8 h、H_(2)SO_(4)用量25%。对熟化料进行水浸,在浸出温度90℃、浸出时间120 min、液固比2∶1条件下,钒浸出率为90.79%。对含钒浸出液用NaClO_(3)进行氧化,采用D202吸附氧化后液中的钒,再对树脂中钒进行解吸,解吸液经沉钒煅烧后五氧化二钒产品纯度达99.21%,钒总回收率为85.99%。Vanadium was extracted from vanadium-containing stone coal by adopting a process of sulphuric acid curing and water leaching,and the effects of sulphuric acid curing and water leaching conditions on vanadium leaching rate were investigated.It is found that the vanadium-containing stone coal is firstly subjected to a sulphuric acid curing process at 130℃for 8 h,with an addition of H_(2)SO_(4) at an amount of 25%;and then the obtained product is leached by water at 90℃for 120 min,with liquid-solid ratio of 2∶1,resulting in the vanadium leaching rate of 90.79%.After the vanadium-containing leachate is oxidized with NaClO_(3),the vanadium in the oxidized solution is adsorbed with D202,and then the vanadium in the resin is desorbed.The obtained solution after desorption is subjected to calcination,and vanadium pentoxide is produced with a purity up to 99.21%.It is shown that a total recovery rate of vanadium is 85.99%.

关 键 词：硫酸熟化 浸出 离子交换 五氧化二钒 石煤钒矿 提钒 水浸 

分 类 号：TD983[矿业工程—选矿] TF111[冶金工程—冶金物理化学]