湖北某石煤型钒矿石工艺矿物学研究  

Study on Mineralogy of a Stone-coal Vanadium Ore from Hubei

作　　者：李美荣[1,2] 梁冬云[2] 何晓娟[2] 

机构地区：[1]中南大学资源加工与生物工程学院,湖南长沙410083 [2]广州有色金属研究院,广东广州510650

出　　处：《金属矿山》2015年第2期87-91,共5页Metal Mine

摘　　要：为了给湖北某石煤型钒矿石中钒的回收工艺研究提供指导,采用化学分析、显微镜观察、单矿物化学成分能谱分析、MLA矿物自动定量检测技术等手段对该矿石进行了工艺矿物学研究,得出的主要结论为:1矿石V2O5含量为0.96%,含钒矿物有钒云母(纤维钒云母、含碳钒云母和片状钒云母)、含钒褐铁矿、钒钙榴石及水钒铁矿、羟钒铜矿、钒钡铜矿等;2虽然矿石中含钒矿物种类较多,但回收钒的主要对象为钒云母、含钒褐铁矿和钙钒榴石,这三者的V2O5分配率合计达97.08%;3含钒褐铁矿和钙钒榴石具有一定磁性,而钒云母磁性极弱。根据以上结论,建议先通过强磁选预富集含钒褐铁矿和钙钒榴石、通过浮选预富集含钒云母,然后采用直接酸浸工艺回收强磁选精矿中的钒、采用加助浸剂的酸浸工艺或焙烧—酸浸工艺回收浮选精矿中的钒。Process mineralogy was conducted on a stone-coal vanadium ore from Hubei by chemical analysis,microscope observation,energy spectrum analysis of mono-mineral chemical components,MLA automated quantitative surveying technique to provide guidelines for vanadium extraction from the ore. The mainly results are as follows：①the V2 O5 content of the ore was 0. 96%,and vanadium bearing minerals includes vanadium mica （ fiber vanadium mica,carbon vanadium mica and flake ros-coelite） , vanadium-containing limonite, calcium vanadium garnet and fervanite, hydroxyl copper, vanadium barium copper, etc.;②Although vanadium exists in many minerals,the objective minerals are vanadium mica,turanite,and vesignieite only with V2 O5 distribution rate of these three 97. 08%;③Both the vanadium-bearing limonite and calcium-vanadium garnet have a certain magnetism,while vanadium mica is lower. According to the conclusion above,it is recommended that the high intensi-ty magnetic separation is adopted to enrich vanadium bearing limonite and calcium vanadium garnet,vanadium mica is pre-en-riched by flotation,and then vanadium is recovered from magnetic separation concentrate by the direct acid leaching method, and from flotation concentrate by acid leaching process or roasting-acid leaching process with the addition of leaching agent.

关 键 词：石煤型钒矿石 工艺矿物学 提钒工艺 

分 类 号：TD912[矿业工程—选矿]