Calcined bauxite is a type of aluminum oxide that is produced by heating bauxite, a sedimentary rock made up of aluminum hydroxides, to high temperatures. During this process, the water molecules present in bauxite are removed, resulting in a dry, powdery material with a high aluminum oxide content.
Calcined bauxite is a widely used material in various industrial applications, including the production of refractory bricks, abrasives, and welding electrodes. Its high hardness, chemical stability, and resistance to heat make it a valuable material for these applications.
At Mineore Enterprises, we take great care to ensure that our calcined bauxite meets the highest standards of quality, consistency, and purity. We begin by carefully selecting high-quality bauxite raw materials that meet our rigorous specifications for purity and mineral composition. We then subject the raw materials to a series of processing steps, including crushing, drying, and calcination, under strict quality control measures.
Throughout the production process, our experienced technicians conduct regular checks and tests to ensure that our calcined bauxite meets the required standards. We test for chemical composition, particle size distribution, physical properties, and other critical parameters to ensure that the final product meets our customers’ specifications.
We take pride in our commitment to quality control, which enables us to provide our customers with consistent, high-quality calcined bauxite that meets their specific needs and requirements.
|
Product Grades
|
||||||
|---|---|---|---|---|---|---|
|
Primary Parameter
|
A90
|
A85
|
A82
|
A80
|
A75
|
A70
|
|
Al₂O₃
|
90%
|
85%
|
82%
|
80%
|
75%
|
70%
|
High Hardness and Durability: Calcined bauxite has a high hardness rating, making it an extremely durable material that can withstand wear and tear. Its high hardness also makes it ideal for use in anti-skid road surfaces, where it provides excellent traction and improves safety.
Chemical Stability: Calcined bauxite is a chemically stable material that is resistant to corrosion and erosion. It does not react with water or other chemicals, making it ideal for use in harsh chemical environments.
Heat Resistance: Calcined bauxite has a high melting point, making it an ideal material for use in high-temperature applications. It can withstand temperatures of up to 1770°C, making it ideal for use in the production of refractory bricks and other high-temperature materials. The heat resistance of calcined bauxite also makes it an ideal material for use in the welding industry, where it is used as a coating for welding electrodes.
Low Thermal Expansion: Calcined bauxite has low thermal expansion, making it an ideal material for refractory applications. Its low thermal expansion ensures that refractory materials made from calcined bauxite maintain their shape and size at high temperatures, providing reliable performance.
Abrasive Properties: Calcined bauxite’s abrasive properties make it an ideal material for use in the manufacture of sandpaper, grinding wheels, and polishing compounds. The abrasive grains of calcined bauxite are hard and durable, allowing them to remove material quickly and efficiently.
