High temperature and Slag Resistance of Magnesia-calcium Brick

December 19, 2018
High temperature and slag resistance of magnesia-calcium brick
Magnesia-calcium brick is an alkaline composite refractory product containing MgO and CaO as main chemical components, including dolomite brick and magnesia dolomite brick. Magnesia-calcium bricks have excellent performance, especially for purifying molten steel, which is not available in other types of refractory materials. Therefore, magnesia-calcium bricks are widely used in refining equipment such as AOD furnaces, VOD furnaces and LF furnaces, and have achieved good results.
1. High temperature resistance of magnesia-calcium brick
The high temperature resistance of magnesia-calcium brick means that the magnesia-calcium brick does not melt under high temperature working conditions, does not soften and deform, and maintains good high temperature stability and mechanical strength. In the high temperature working environment, the main minerals of Magnesia Calcium Brick, MgO and CaO, are high temperature mineral materials and have good high temperature stability.
2. Anti-slag performance of magnesia-calcium brick
The slag resistance of magnesia-calcium brick refers to the resistance to chemical attack and penetration of slag when magnesium-calcium brick is in contact with slag during use. It is one of the most important performance properties of magnesia-calcium bricks.
In various refining furnaces, chemical erosion and penetration of slag is one of the main causes of damage to the lining. Therefore, improving the slag resistance of magnesia-calcium bricks is particularly important for improving the service life of refining furnace linings. The slag resistance of magnesia-calcium bricks depends mainly on its chemical composition, structure and alkalinity and temperature of the slag.
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