东北大学学报（自然科学版）

东北大学学报(自然科学版) ›› 2009, Vol. 30 ›› Issue (10): 1489-1492.DOI: -

• 论著 • 上一篇    下一篇

低品位铝土矿在振动磨机中的选择性磨矿研究

韩跃新;朱一民;田祎兰;王泽红;   

  1. 东北大学资源与土木工程学院;
  • 收稿日期:2013-06-22 修回日期:2013-06-22 出版日期:2009-10-15 发布日期:2013-06-22
  • 通讯作者: Zhu, Y.-M.
  • 作者简介:-
  • 基金资助:
    国家高技术研究发展计划项目(2005CB623701)

Research on selective grinding of low-grade bauxite in vibration mill

Han, Yue-Xin (1); Zhu, Yi-Min (1); Tian, Yi-Lan (1); Wang, Ze-Hong (1)   

  1. (1) School of Resources and Civil Engineering, Northeastern University, Shenyang 110004, China
  • Received:2013-06-22 Revised:2013-06-22 Online:2009-10-15 Published:2013-06-22
  • Contact: Zhu, Y.-M.
  • About author:-
  • Supported by:
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摘要： 以w(Al2O3)/w(SiO2)=4.4的铝土矿为研究对象,采用振动磨机对铝土矿进行了选择性磨矿试验研究.结果表明:被磨物料质量分数为70%时,磨矿产品粗粒级的w(Al2O3)/w(SiO2)比较高,选择性较好;物料与磨球质量比为0.9时,其选择性磨矿效果较好;湿式磨矿较干式磨矿的选择性效果好;在上述各条件下,磨矿产品中+0.23mm粗粒级的w(Al2O3)/w(SiO2)可达7.5以上,产率为25%,Al2O3回收率为27%;对低品位铝土矿选择性磨矿脱硅是可行的.

关键词: 振动磨机, 铝土矿, 选择性磨矿, Al2O3与SiO2的质量分数比

Abstract: The selective grinding in vibration mill for bauxite whose components ratio in fraction of w(Al2O3)/w(SiO2)=4.4 was investigated via tests. The results showed that component ratio of coarse-particle bauxite ground is comparatively higher if its mass fraction in pulp is 70%, which means a better selectivity. And if the mass ratio of ground material to grinding ball is 0.9, the selective grinding will have a good effect. As to the type of grinding, wet grinding has better selective effect than dry grinding. Under the favorable conditions as above, the component ratio w(Al2O3)/w(SiO2) of ground product (particle size >+0.23 mm) is over 7.5 with the output rate 25% and recovery rate 27% of Al2O3. Desilication of low-grade bauxite by selective grinding is feasible.

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