This article presents the main technologies for processing serpentine in order to obtain magnesium oxide. Acid processing methods are presented, such as sulphate, nitrate and hydrochloric acid methods. Also, for the sake of completeness, lesser known methods, such as sintering with ammonium sulphate and processing salt waste, are presented in this paper. The mechanism of action of each of the methods is briefly described, as well as the advantages and disadvantages of each of them. A review of the methods for producing magnesium oxide from magnesium-containing raw materials revealed that the development of new reagents and optimization of the equipment used to improve the quality of the resulting product are required, and the main areas of application of magnesium oxide are described.

serpentine, magnesium oxide, applications, nitric acid leaching, hydrochloric acid leaching, sulphate method, fusion with sulphate.

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