It is not corroded by alkaline substances, which causes the construction quality to be unsatisfactory. Some users are not clear about the anti-alkali treatment method, which leads to processing errors and a larger problem. So, let's talk about what is the correct alkaline treatment method.
1. Direct contact melting erosion method. Under high temperature sealing conditions, the molten steel is in direct contact with the test block to carry out the erosion reaction, and the changes in various properties of the sample before and after being eroded are measured. The better.
2.mixed erosion method. The coke particles were mixed with anhydrous K2CO3, and the test block was buried therein. Under high temperature sealing conditions, the test block was subjected to an erosion reaction, and the dimensional change or strength reduction rate of the test block before and after erosion was measured.
3. The alkali resistance of refractory bricks is the ability of high alumina refractory bricks to resist alkali corrosion at high temperatures. During blast furnace smelting, refractory bricks will be corroded by alkali. If raw materials are added to alkali-containing minerals, the corrosion of these alkali-containing minerals on the aluminum-silicon and carbon refractory brick linings is affected by the alkali concentration, temperature and water vapor, which is related to the service life of the blast furnace lining and improves the resistance of the refractory bricks. Alkali performance extends the life of the blast furnace.
During the process of alkali resistance treatment with high-alumina refractory bricks, there may be hidden dangers. This requires the safety precautions to be taken into account. It is the correct way to deal with it on the premise of ensuring safety. During the alkali-resistant treatment, we must remember to stir the refractory bricks and other liquids. After homogenization, the properties will be appropriately enhanced, which will help the success of the refractory bricks.
