The magnesia
ramming mass for EAF bottom has been used by steel mills and proved its superior performance, which is embodied in the following aspects:
1. The sintering performance is good. It can be quickly sintered at a guaranteed sintering temperature to form a sintered layer with a certain strength and a certain thickness, which is sufficient to resist the mechanical impact of the charge.
2. Appropriate expansion performance. Its expansion and contraction will not produce local excessive cracks to reduce the intrusion of molten steel and steel slag, nor will it cause local floating due to cracks caused by shrinkage, ensuring continuous operation of the furnace.
3. Larger natural bulk density and density after firing can not only avoid uneven density caused by construction and sintering, but also have higher resistance to molten steel, steel slag penetration and erosion.
4. Strong corrosion resistance to molten steel and steel slag, low corrosion rate, uniform corrosion, and long service life.
5. The hot surface of the furnace bottom has a strong affinity with the new furnace bottom
ramming mass, which can ensure the repair effect.
