고밀도 용융 알루미나

Dense fused alumina — also known as dense fused corundum — is a premium grade of aluminum oxide produced through the electric arc fusion of high-purity bauxite or calcined alumina at temperatures exceeding 2000°C. Under these extreme melting conditions, the aluminum oxide fully liquefies and recrystallizes upon cooling into a highly dense, low-porosity structure with a well-developed corundum crystalline phase.

What distinguishes dense fused alumina from standard white or brown fused alumina is its significantly reduced porosity and higher bulk density. This is achieved through careful raw material selection, precise furnace temperature control, and optimized cooling rates — all of which contribute to a tighter, more consolidated grain structure. The result is an alumina material that combines exceptional hardness, outstanding mechanical strength, and superior resistance to thermal shock and chemical attack, making it one of the most reliable high-performance alumina grades available for demanding industrial environments.