An Overview of Alumina Ramming Mass: Types and Heat Resistance

Alumina ramming mass, also known as corundum ramming mass, is a monolithic refractory material used for lining induction furnaces. It is made of high-purity alumina powder, refractory aggregate, and binder.
There are three main types of alumina ramming mass: ordinary, semi-pure, and pure. Ordinary alumina ramming mass has a lower purity level and is suitable for lining low-temperature induction furnaces. Semi-pure alumina ramming mass has a higher purity level and can withstand higher temperatures. Pure alumina ramming mass has the highest purity level and the best heat resistance, making it ideal for lining high-temperature induction furnaces.
The heat resistance of alumina ramming mass is determined by its mineral composition and the firing temperature. The mineral composition affects the refractory properties of the material, while the firing temperature affects its density and strength. The heat resistance of alumina ramming mass typically ranges from 1650℃ to 1850℃.
In addition to its heat resistance, alumina ramming mass also has excellent corrosion resistance and thermal shock resistance. It can withstand sudden temperature changes without cracking or breaking, making it ideal for use in harsh industrial environments.
In summary, alumina ramming mass is a versatile and durable refractory material used in induction furnace linings. Its heat resistance properties vary depending on the type of material and firing temperature, with pure alumina ramming mass offering the highest level of heat resistance.