Calcined Magnesite Powder

Calcined magnesite powder, also known as caustic calcined magnesite or magnesia powder, is a product obtained by heating magnesite ore (magnesium carbonate, MgCO3) at high temperatures to drive off carbon dioxide and water, resulting in the formation of magnesium oxide (MgO). The calcination process transforms magnesite into a highly reactive and refractory material with various industrial applications. Calcined magnesite powder’s unique properties make it indispensable in the manufacture of refractories and other applications requiring high-temperature resistance and reactivity. Its versatile nature and compatibility with different industries contribute to its significance in various sectors of manufacturing and engineering. The magnesite and steatite are made into a powder of ratio 3 : 1 by weight proportion, and the combination is thermally decomposed at a temperature of 1200° Celsius. The calcined powder along with and without Sodium Tripolyphosphate (STPP) salt is tested for its microscopic structural development, consistency, initial setting time, final setting time, and heat of hydration. The powder is made into paste with water/powder ratio as 0.25 and the hardened samples are tested for its compressive strength, drying shrinkage, pH value, SEM analysis, and XRD analysis.

Calcined Magnesite Powder Uses

Calcination Process

The calcination of magnesite involves heating the raw magnesite ore to temperatures ranging from approximately 700 to 1000 degrees Celsius (1292 to 1832 degrees Fahrenheit). During this process, carbon dioxide and water vapor are released, leaving behind magnesia powder.

Chemical Composition

Calcined magnesite powder primarily consists of magnesium oxide (MgO). The properties and reactivity of the powder depend on factors such as the calcination temperature and the source of the magnesite ore.

Refractories

Calcined magnesite powder is a fundamental material in the production of refractory bricks and linings used in high-temperature applications like furnaces, kilns, and steelmaking.

Agriculture

It can be used as a magnesium fertilizer in agriculture to provide magnesium nutrients to plants and improve soil fertility.

Construction

Calcined magnesite powder can be used as a binder in construction materials such as magnesia cement and magnesia-based concrete.

Water Treatment

It's used in water treatment processes for pH adjustment and as a coagulant in wastewater treatment.

Physical Properties

Calcined magnesite powder is often fine and powdery in texture, with a high melting point and excellent resistance to heat and corrosion.

Safety

Calcined magnesite powder is generally safe for industrial use. However, as with any fine powder, proper safety precautions should be taken to prevent inhalation of dust and contact with skin or eyes.

Global Production

Major producers of magnesite and calcined magnesite include China, Greece, and Turkey.

Reactivity

Calcined magnesite powder is highly reactive, making it useful in various chemical and industrial processes where its high temperature stability and alkalinity are advantageous.

Our Products

Our business operations are bolstered by a network of facilities and offices, ensuring seamless support to guarantee the production and delivery of the highest quality Lime and Limestone Powder to our valued clients.