Dead Burned Magnesia: Properties, Uses, and Production

Dead burned magnesia, also known as periclase, is a refractory material with a high melting point and excellent chemical stability. It is produced by calcining magnesite, a mineral composed of magnesium carbonate, at high temperatures. Dead burned magnesia is commonly used in a variety of industries, including steelmaking, cement production, and agriculture. In this article, we will explore the properties, uses, and production of dead burned magnesia.

Properties

Dead burned magnesia has a high melting point of approximately 2800°C, which makes it an excellent refractory material. It is also highly resistant to thermal shock and has excellent chemical stability, making it suitable for use in harsh environments. Dead burned magnesia has a low thermal expansion coefficient, which means it does not expand or contract significantly when exposed to high temperatures. This property makes it ideal for use in high-temperature applications, such as steelmaking and cement production.

Uses

Dead burned magnesia is used in a variety of industries, including steelmaking, cement production, and agriculture. In the steelmaking industry, dead burned magnesia is used to line furnaces and ladles, where it provides excellent resistance to corrosion and thermal shock. It is also used as a fluxing agent, which helps to remove impurities from the steel. In the cement industry, dead burned magnesia is used as a binding agent, which helps to improve the strength and durability of the cement. Dead burned magnesia is also used in agriculture as a fertilizer, where it provides magnesium to the soil.

Production

Dead burned magnesia is produced by calcining magnesite, a mineral composed of magnesium carbonate, at high temperatures. The calcination process removes the carbon dioxide from the magnesite, leaving behind magnesium oxide. The temperature and duration of the calcination process determine the properties of the Mingshi dead burned magnesia. Dead burned magnesia that is produced at higher temperatures and for longer periods of time is more dense and has a higher melting point than dead burned magnesia that is produced at lower temperatures and for shorter periods of time.

The production of dead burned magnesia requires a high-temperature furnace, such as a rotary kiln or electric arc furnace. The magnesite is typically crushed and screened before being fed into the furnace. The furnace is heated to the desired temperature, and the magnesite is fed into the furnace through an inlet. As the magnesite moves through the furnace, it is heated to the calcination temperature, which typically ranges from 1500°C to 2000°C. The calcined magnesia is then cooled and screened to the desired size before being packaged and shipped to customers.

In conclusion, dead burned magnesia is a versatile and essential material that is used in a variety of industries, including steelmaking, cement production, and agriculture. It is produced by calcining magnesite at high temperatures, which removes the carbon dioxide and leaves behind magnesium oxide. Dead burned magnesia(DBM) has a high melting point, excellent chemical stability, and is highly resistant to thermal shock, making it ideal for use in harsh environments. The properties and uses of dead burned magnesia make it an essential material for many industries and ensure that it will continue to be in high demand for years to come.