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Technological conditions for preparing high purity magnesium oxidie

HU Zhang-wen, WANG Zi-you, YANG Baojun, SHAN Cheng-xiang(Dept. of Bioch. Engn. , Anhui University of Technology and Science, Wuhu 241000,China; Sch. of Chem. Engn., Hefei University of Technology, Hefei 230009, China)  
The high purity magnesium oxide is a kind of important inorganic chemical products, which is of very extensive application. Using serpentine as raw materials, high purity magnesium oxide was prepared. The results by using orthogonal indicate that the optimum technological conditions are as follows: the reaction temperature 50 ℃ , the reaction time 40 min, the concentration of magnesium sulfate 1.5 mol/L and the calcinations time 3 h. Under above conditions, the purity of magnesium oxidize is over 99% , which meets the demand for high pure magnesium oxidie. The technological process is simple and the product quality is steady. It is suitable for industrial uses.
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