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金属矿山 ›› 2008, Vol. 38 ›› Issue (07): 61-63.

• 矿物工程 • 上一篇    下一篇

碳化法处理巴盟菱镁矿

易小祥,杨大兵,李亚伟   

  1. 武汉科技大学
  • 收稿日期:2008-05-22 出版日期:2008-07-15 发布日期:2011-07-16

Processing of Bameng Magnesite Ore by Carbonization Method

Yi Xiaoxiang,Yang Dabing,Li Yawei   

  1. Wuhan University of Science and Technology
  • Received:2008-05-22 Online:2008-07-15 Published:2011-07-16

摘要: 采用碳化法处理巴盟菱镁矿,以煅烧制得的轻烧镁为原料,经消化、碳化、浸出和煅烧后,可获得MgO品位大于99.41%的高纯活性产品,MgO回收率达61.34%。其最佳工艺条件:煅烧温度800 ℃,轻烧时间2.5 h,振动磨磨矿时间2.5 min,消化时间30 min,重镁水加温温度150 ℃,CO2通气量8 L/min,通气时间3 min,固液比60∶1,二次碳化的pH值7.0。

关键词: 菱镁矿, 碳化法, 氧化镁

Abstract: Carbonization method was used to process Bameng Magnesite ore.The light-burned magnesia produced by calcination was hydrated,carbonized,leached and calcined.As a result,a highly pure active product having an MgO grade of higher than 99.41% and an MgO recovery of  61.34% was obtained.The best process conditions include:a calcination temperature of 800 ℃,light-burning time of 2.5 h,vibrating grinding time of 2.5 min,hydration time of 30 min,Mg(HCO3)2  liquid temperature of 150 ℃,CO2 aeration volume of 8 L/min,aeration time of 3 min,solid/liquid ratio of 60∶1 and pH value of 7.0 for the secondary carbonation.

Key words: Magnesia, Carbonization method, Magnesia