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BULLETIN OF THE CHINESE CERAMIC SOCIETY ›› 2021, Vol. 40 ›› Issue (2): 485-492.

Special Issue: 资源综合利用

• Solid Waste and Eco-Materials • Previous Articles     Next Articles

Research Progress on Purification and Application of High-Silicon Magnesite

QI Xin1,2,3, LUO Xudong1, LI Zhen4, ZHOU Yuanpeng5, PAN Zhenzhong5   

  1. 1. School of Materials and Metallurgy, University of Science and Technology Liaoning, Anshan 114051, China;
    2. School of Metallurgy Engineering, Liaoning Institute of Science and Technology, Benxi 117004, China;
    3. Liaoning Key Laboratory of Optimization and Utilization of Non-associated Low-grade Iron Ore, Benxi 117004, China;
    4. School of Materials Science and Engineering, Yingkou Institute of Technology, Yingkou 1150145, China;
    5. Haicheng Far East Mining Co., Ltd., Anshan 114200, China
  • Received:2020-09-25 Revised:2020-11-06 Online:2021-02-15 Published:2021-03-10

Abstract: Magnesite is one of superior mineral resources in China. It has been widely used in metallurgy, building industry, chemical industry etc. High-silicon magnesite (SiO2>3%, mass fraction) is one of low-grade and difficult-to-select magnesite with high content of SiO2. High-quality magnesia products are prepared from high-silicon magnesite by flotation. By direct calcination of high-silicon magnesite with reasonable ingredients, high value-added refractory materials such as magnesia-silica, forsterite and composite powder materials are prepared. Important raw materials such as building materials and chemical materials are also prepared from high-silicon magnesite. Hence high-silicon magnesite has high economic and scientific research value. In the paper, the purification processes of high-silicon magnesite at home and abroad were reviewed. The purification principles and technical indicators were expounded. Finally the comprehensive utilization of high-silicon magnesite were introduced.

Key words: high-silicon magnesite, flotation, refractory, active magnesia, low-grade magnesite, magnesite tailings

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