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金属矿山 ›› 2015, Vol. 44 ›› Issue (02): 87-91.

• 矿物工程 • 上一篇    下一篇

湖北某石煤型钒矿石工艺矿物学研究

李美荣1,2,梁冬云2,何晓娟2   

  1. 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
  • 出版日期:2015-02-15 发布日期:2015-07-29

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

Li Meirong1,2,Liang Dongyun2,He Xiaojuan2   

  1. 1.School of Mineral Processing and Bioengineering,Central South University,Changsha 410083,China;2.Guangzhou Research Institute of Non-ferrous Metals,Guangzhou 510650,China
  • Online:2015-02-15 Published:2015-07-29

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。

关键词: 石煤型钒矿石, 工艺矿物学, 提钒工艺

Abstract: 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 V2O5 content of the ore was 0.96%,and vanadium bearing minerals includes vanadium mica (fiber vanadium mica,carbon vanadium mica and flake roscoelite),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 V2O5 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 intensity magnetic separation is adopted to enrich vanadium bearing limonite and calcium vanadium garnet,vanadium mica is pre-enriched 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.

Key words: Stone-coal vanadium ore, Process mineralogy, Vanadium extraction