The main factors affect the performance of magnesia-calcium brick include MgO / CaO ratio, chemical purity and density etc.
The MgO / CaO ratio of magnesia-calcium brick can increase high temperature resistance, chemical erosion resistance of slag,high temperature corrosion resistance and hydration resistance. But it will decrease the magnesia-calcium brick’s spalling resistance, resistance to the slag penetration and molten steel purification performance.
Add appropriate amount of ZrO2 can improve the performance of spalling resistance, high temperature corrosion resistance and hydration resistance of the magnesia-calcium bricks. ZrO2 is called the "multi-functional" additives of magnesia-calcium brick.
At abroad, eye bricks of AOD furnace generally use high-purity, high density sintered magnesia dolomite brick with 1% content of ZrO2 with favorable results.
Wanhao is a manufacturer who is specialized in designing various kinds of furnace and making refractory products for electric furnace, ladle, tundish, blast furnace, AOD furnace, IF furnace, etc.
Add: Caogou Industry Zone,Yichuan County,Luoyang.China