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By fusing in an electric arc furnace, Fused Magnesia can be produced, which along with sintered magnesia is used for refractory bricks (e.g. to line steel furnaces or cement rotary kilns) and for electrical insulation in furnaces. Magnesia has a melting point of approx. 2800°C. Here too there are single-stage and two-stage processes in which either magnesium carbonate is fused directly or via the interim stage of caustic calcined magnesia. Fused Magnesia can also be produced in a flotation where rejects or lower category raw stone is milled and impurities are washed out. Material is briquetted, caustic calcined then fused, screened and crushed.
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In addition to ceramic, refractory and welding industry applications there are also other industrial applications, including:
Brown Fused Alumina (BFA) is a very hard, tough abrasive raw material produced by melting bauxite (an aluminum ore) at extremely high temperatures. During the melting proce...
Brucite is also referred to as magnesium hydroxide when it exists in its synthetic or chemical form. Magnesium hydroxide is an inorganic compound that occurs in the form of...
Caustic Calcined Magnesia (CCM) is a mineral raw material produced by calcining magnesium carbonate at high temperatures. It is characterized by high purity and excellent c...