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Magnesium Sand for The Production of Magnesium Carbon Bricks What Is Magnesium Sand? Magnesia sand classification, from the point of view of the production process of magnesia sand, is mainly divided into two kinds: one is electrofusion magnesia sand, and the other is sintered magnesia sand. Electrofusion magnesium sand is made of high-quality magnesite as raw material by melting and crystallizing in an electric arc furnace. Sintered magnesium sand is mainly coal or natural gas as the main fuel, the magnesite calcined by 1550 ~ 1800 ℃ and gets. Email:[email protected]