- Time:Jul 01, 2023
Heavy refractory bricks are a high-quality refractory material, usually composed of the following raw materials:
1. Clay: Clay is one of the main raw materials for manufacturing heavy refractory bricks. It is a natural soil with a high proportion of clay minerals and has good refractory properties at high temperatures.
2. Kaolin: Kaolin is another commonly used raw material, which is a white powder rich in kaolinite minerals. Kaolin has high aluminum content and excellent refractory properties, which can improve the refractoriness and erosion resistance of heavy refractory bricks.
3. Alumina: Alumina is an additive used to increase the refractory performance of heavy refractory bricks. Alumina has an extremely high melting point and high temperature resistance, which can maintain stability at high temperatures and prevent bricks from melting and deforming.
4. Magnesium oxide: Magnesium oxide is another common additive used to improve the refractoriness of heavy refractory bricks. Magnesium oxide has a high melting point and excellent fire resistance, and can also improve the alkali resistance and erosion resistance of bricks.
5. Silica: Silica is a raw material rich in silica, which is used to increase the stability and mechanical strength of heavy refractory bricks. It improves the compressive strength and durability of bricks.
6. Other additives: According to specific requirements, other auxiliary materials and additives may be added to the heavy refractory bricks, such as binders, anti-sticking agents, expansion agents, etc., to adjust the physical properties and processing properties of the bricks.
The above are the raw materials commonly used in the manufacture of heavy refractory bricks. These raw materials are sintered at high temperature through proper proportioning and processing. Different proportions and processing methods will result in heavy refractory bricks with different characteristics and performance to meet the needs of various high-temperature applications.
