Magnesia

Magnesia is one of the raw materials of refractory materials. Also known as magnesia refractory raw materials, it refers to raw materials with MgO as the main component and periclase as the main crystal phase. Magnesia can be divided into two categories: sintered magnesia and fused magnesia. Today our editor will briefly summarize sintered magnesia and fused magnesia for you below.

 

 

Sintered magnesia is a sintered block obtained by calcining the natural magnesite ore MgCo3 at high temperature, and then crushed and screened. Or magnesium oxide raw material obtained by fully sintering magnesium hydroxide produced from seawater or brine at 1450-1900°C. Generally speaking, sintered magnesia refers to a product obtained by calcining magnesite as raw material. Due to the high sintering temperature and good degree of sintering of magnesia, sintered magnesia is also called dead burnt magnesia, which is similar to light-burned oxidized magnesia. Magnesium phase difference. It is the raw material for the production of ordinary magnesia bricks and amorphous refractory materials.

Fused magnesia is a magnesia raw material made of natural magnesite, light-burned magnesia powder or sintered magnesia that is melted in an electric arc furnace at a high temperature of 2750 degrees. Its strength, corrosion resistance and chemical inertness are better than those of sintered magnesia. Magnesia. Perclase has large grains, dense structure, good slag resistance, and excellent high-temperature volume stability. Sintered magnesia is increasingly being replaced in magnesia and magnesia carbon refractory materials. It is a good raw material for high-grade alkaline bricks, carbon-containing products and amorphous refractory materials.

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