Study on high resistance to spalling magnesium-carbon brick
Three different formulations and magnesia carbon bricks treated with different heat treatment methods (see table below) were studied. The 1# sample is a low-temperature heat-treated brick composed of fused magnesia, high-purity graphite and phenolic resin, and the 2# sample is a brick which is fired and asphalt-impregnated on the basis of the 1# sample, and 3# is in Add powder bricks in 1#.
|Heat treatment||Low temperature heat treatment||Firing + asphalt impregnation||Low temperature heat treatment|
|Cold crushing strength||44||57||45|
As a result, it is considered that the brick (2#) which is not immersed in the aluminum powder and is immersed and fired by the asphalt is better than the other two bricks.