pp 1–7 | Cite as

Novel Alkaline Method for the Preparation of Low-Chromium Magnesia

  • Chao Wang
  • Hui Xu
  • Weiping LiuEmail author
  • Pengcheng Han
  • Xiyun Yang
  • Xuming WangEmail author
Design, Development, Manufacturing, and Applications of Refractory Metals and Materials


The typical method for the preparation of chromium-magnesia is by energy-consuming grinding, but the pollution of Cr6+ ions is a problem. However, the chromium-magnesia refractory is still irreplaceable due to its outstanding performance. In this regard, low-chromium magnesia was prepared by the alkaline chromium precipitation method from cheap light-burned magnesia. The impurities in the light-burned magnesia was removed in order to avoid the formation of Cr6+. The chromium was precipitated directly on the light-burned magnesia surface without the grinding process. The low-chromium magnesia was obtained after the calcination. The reaction temperature, solid content, reaction time and stirring speed were examined and low-chromium magnesia with Cr3+ 0.4%, MgO 98.5% was obtained. The effect of temperature on the surface tomography of low-chromium magnesia was also discussed. The present novel alkaline method should be a promising way for the preparation of low-chromium magnesia.



Funding for this research by National Natural Science Foundation of China (51574286) and China Postdoctoral Science Foundation (2016M592448) are gratefully acknowledged.


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Copyright information

© The Minerals, Metals & Materials Society 2018

Authors and Affiliations

  1. 1.School of Metallurgy and EnvironmentCentral South UniversityChangshaPeople’s Republic of China
  2. 2.Department of Metallurgical Engineering, College of Mines and Earth SciencesUniversity of UtahSalt Lake CityUSA

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