BFA and WFA are two types of fused alumina. Fused alumina is a type of ceramic material that is made by fusing bauxite ore at high temperatures. It is a hard, strong, and wear-resistant material that is used in a variety of applications, including abrasives, refractories, and electrical insulators.
The choice of BFA or WFA will depend on the specific application. BFA is less expensive and is often used in applications where the color is not important. WFA is more expensive, but it is also more wear-resistant and has a higher purity. WFA is often used in applications where the color is important, such as in the manufacture of grinding wheels.
Refractory BFA-WFA Suppliers
The manufacture process of fused mass is then cooled and crushed into smaller pieces. These pieces are then screened to remove any impurities. The final product is a hard, strong, and wear-resistant material that is used in a variety of applications.
The specific manufacturing process will vary depending on the specific requirements of the product. For example, the type of furnace used, the temperature and time of the fusing process, and the type of materials used will all affect the properties of the final product.
- Preparation: The bauxite ore is first crushed and then ground to a fine powder. The powder is then mixed with other materials, such as iron fillings and carbon, to form a batch.
- Fusing: The batch is then fused in a furnace at high temperatures, typically between 2,000 and 2,500 degrees Celsius. This process melts the bauxite ore and other materials, and then solidifies them into a fused mass.
- Bauxite ore quality: The quality of the bauxite ore is important, as it will affect the purity and properties of the final product.
- Furnace type: The type of furnace used will affect the temperature and time of the fusing process, which will in turn affect the properties of the final product.
- Fusing temperature and time: The fusing temperature and time will affect the purity and properties of the final product.
The manufacture of BFA and WFA is a complex process that requires careful control of the various parameters. The quality of the final product will depend on the quality of the bauxite ore, the type of furnace used, the fusing temperature and time, and the other materials used in the batch.
- Hardness
- Strength
- Chemical inertness
- High melting point
- Cost-effectiveness
Fire brick is mostly used where heat insulation is required. For example,in :
- Abrasives
- Refractories
- Electrical insulators
- Wear-resistant parts
- Chemical processing