Magnesium hydroxide is also known as caustic magnesia, light burnt magnesia, etc., colorless hexagonal crystal or white powder, odorless, insoluble in water and alcohol, soluble in dilute acid and ammonium salt solution, and the aqueous solution is alkaline. Magnesium hydroxide is a medium-strong base. It is dehydrated and decomposed when heated to 623K (350°C). Like magnesium oxide, it is easy to absorb carbon dioxide in the air and gradually form basic carbonate. It is decomposed into magnesium oxide and water when it is higher than 350℃, but it can be completely dehydrated only when it is above 1800℃.
The active ingredient of brucite is magnesium oxide, which is a hydroxide mineral. At present, brucite products are widely used in steel, electric power, agriculture, plastics and other industries. For example: the solution of making pure magnesium hydroxide with brucite, or the use of brucite in blast furnace slag splashing process has also made a breakthrough. At the same time, in the flame retardant industry, the development of magnesium hydroxide flame retardants from brucite as raw materials is very rapid. The following is an introduction to the application fields of magnesium hydroxide.
1. In the iron and steel industry, it is used as a magnesia slag making agent
2. In the power industry, it is used for desulfurization of power plant flue gas
3. In the plastics industry, it is used as a flame retardant, mixed with components such as coupling agents and whitening agents to manufacture cables;
4. In agriculture, it is used to make magnesium fertilizer raw materials.
5. In the field of environmental protection, it is used as a neutralizing treatment agent for acidic wastewater
The following will introduce the application fields of magnesium hydroxide.