The method for determining the refractory of bauxite usually adopts the high-temperature furnace test method, and the specific steps include:
1.The specimen is processed into a cylinder or square block with a diameter of 10 mm and weighed for its mass.
2.The specimen was placed in a high-temperature furnace and heated to 900 1200 at a rate of 5 min and 10 min.
3.Observe the changes of the sample at high temperatures, such as deformation, cracking, melting, etc., and record the temperature at which they occur.
4.At the end of the observation, the specimen is removed and its dimensional change is measured. Calculate the refractoriness index.
In addition, the refractory resistance of bauxite can be determined by the ingot method, which includes:
1.The specimen is processed into a cylindrical or rod shape and pressed into an 8 mm diameter ingot.
2.The specimen is heated to the desired temperature at a certain rate in a high-temperature furnace.
3.Hold at high temperatures for a certain amount of time to observe how the specimen changes.
4.The specimen is removed and its dimensional change is measured. Calculate the refractoriness index.
It should be noted that when determining the refractory resistance of bauxite, the uniformity and consistency of the sample should be ensured to obtain accurate test results. In addition, depending on the application area and test requirements, other relevant standards and methods can be used for testing.