1. The components of chrome corundum castable mainly include aluminum oxide, chromium oxide and magnesium oxide. Among them, the addition amount of chromium oxide can affect the specific surface area, acid corrosion resistance and thermal shock resistance of chrome corundum.
2. The high temperature performance of chrome corundum castable is very good, and it can be used for a long time in a high temperature environment above 1500℃ without failure.
3. The main use of chrome corundum castable is as a lining material for steel smelting furnaces, which can resist the corrosion and erosion of molten metal at high temperature.
4. The preparation process of chrome corundum castable includes powder batching, preparation of molding slurry, casting molding and drying. Among them, the fineness and dispersibility of the powder have a great influence on the quality of the castable.
5. During the use of chrome corundum castable, due to the cyclic action of high temperature and cooling, thermal shock and thermal expansion problems are prone to occur. Therefore, an appropriate amount of structural adhesive, expansion adhesive and fiber need to be added during the preparation process to improve its thermal shock resistance.
6. Chrome corundum castable can be divided into two types: ordinary type and low expansion type. The low expansion type castable has a low expansion coefficient, which can reduce the damage caused by thermal expansion caused by high temperature.
7. Chrome corundum castable has good wear resistance and corrosion resistance, which can effectively resist the erosion and wear of metal liquid and extend the service life of the furnace.
8. Chrome corundum castable has high refractoriness, can be used for a long time at high temperature, and is not easy to anneal and soften. Therefore, it is widely used in high temperature processes such as steel smelting.
9. One thing to note in the construction of chrome corundum castable is that the quality requirements of the castable are high, the molding is uniform, and it is not easy to produce hollows and defects. In order to meet this requirement, the proportion and vibration method of the castable need to be reasonably selected during construction.
10. The pouring and curing process of chrome corundum castable is also very important. During the pouring process, the pouring speed and temperature should be controlled to avoid cracks and deformation. During the curing process, the temperature and humidity should be controlled to achieve the ideal sintering effect of the material.
Chrome corundum castable is a high-temperature refractory material with excellent thermal stability and wear resistance. It is widely used in high temperature environments such as steel smelting. During use, attention should be paid to the quality of the castable and the construction process to ensure its performance and life.
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