The production process of light-burned magnesium powder

Light-burned magnesia powder is produced by roasting magnesite at a temperature below 1000 °C, and plays a role in metallurgy, chemical industry, light industry, agriculture, mining, environmental protection and other industries. Light-burned magnesia is an important part of the raw materials required for the production of magnesite products. The magnesia manufacturer is the active magnesia produced by calcining magnesite. The ability of magnesium oxide to carry out physical adsorption and chemical reaction is called the activity of magnesium oxide, which has a very significant impact on the production process and quality of the product. The light-burned magnesia is calcined by a two-step calcination method to obtain sintered magnesia. Lightly burnt powder

Light-burned magnesia is commonly known as light-burned powder, light-burned magnesium oxide, also known as caustic magnesia, and is often presented in white or light yellow shapes. Its melting point and boiling point are 2852°C and 3600°C, respectively. It is easily soluble in acid and ammonium salts, but not easily soluble in organic solvents such as ethanol. It is a hard cementitious material that is easily deliquescent in the air. The sample with a mass fraction higher than 98% is called high-purity magnesium oxide, because it has excellent alkali resistance, insulation resistance, light transmission performance in high temperature environment, and has a relatively large thermal expansion coefficient and excellent performance. Thermal conductivity and other advantages are widely used in electronics, ceramics, chemical industry and so on.

At present, most of the production of light-burned magnesia is obtained by calcining at 700-1200 ℃ with magnesite with a size of 20-100mm. The activity also varies depending on the decomposition rate of MgCO3 and the state of MgO development. Its activity lies in the content of active magnesia in light-burned magnesia, and its physical adsorption and chemical reactivity depend on this. Because of this, the ability to accurately measure its activity directly affects the production and application of light-burned magnesia in practice.