Preparation of magnesia by calcining brucite powder: detailed process analysis

Magnesia is an important refractory material, widely used in steel, nonferrous metallurgy, glass, ceramics and other industries. As a high-quality magnesium raw material, brucite powder can be used to produce high-quality magnesia through calcination. This article will introduce the detailed process flow of calcining brucite powder to prepare magnesia, helping you better understand and master this process.

Process flow of calcining brucite powder to prepare magnesia

Pretreatment and crushing

Pretreatment: The brucite raw material is first pretreated to remove impurities such as red tendons and soil to improve product quality.

Crushing: The treated brucite is crushed to a certain particle size, usually 100~200 mesh, for subsequent calcination.

Calcination process

Calcination equipment: The crushed brucite powder is sent to the calcination kiln for calcination. The commonly used calcination kiln is an indirect heating rotary kiln, and the fuel can be coal or gas.

Calcination conditions: The calcination temperature is controlled at 400~700℃, and the calcination time is adjusted according to the brucite particle size and temperature to ensure full reaction.

Cooling and treatment

Cooling: The calcined light-burned magnesium oxide is cooled to recover heat, which not only reduces production costs but also improves energy utilization efficiency.

Crushing and classification: The cooled magnesium oxide is crushed and graded to obtain products of the required particle size to ensure the quality and performance of magnesia.

Product quality and application

Product quality: The magnesia prepared by the above process has high purity, high density and good refractory properties, and is suitable for various high-temperature industrial environments.

Application field: Magnesia is widely used in steel, non-ferrous metallurgy, glass, ceramics and other industries. As a refractory material, furnace lining material, etc., it has important industrial value.

The process flow of calcining brucite powder to prepare magnesia includes pretreatment and crushing, calcination process, cooling and treatment. By strictly controlling the process parameters of each link, high-quality magnesia products can be prepared to meet the needs of industrial production.