Chrome Fused Alumina

Chrome Fused Alumina forms a stable Al₂O₃–Cr₂O₃ solid solution at elevated temperatures, providing superior resistance to alkaline slags and metal oxides compared with conventional corundum. In refractory formulations, it is commonly used as a key aggregate or reinforcing phase, significantly enhancing erosion resistance and extending the service life of refractory products.
Chrome Fused Alumina is produced by adding a small amount of chromium oxide (Cr₂O₃) to high-purity alumina and smelting it in an electric arc furnace, resulting in its characteristic pink to purplish-red color.
It exhibits a hardness slightly higher than brown fused alumina and comparable to white fused alumina, with a microhardness of 2200–2300 kg/mm². Its toughness is higher than white fused alumina but slightly lower than brown fused alumina.
Abrasives made from this material are particularly suitable for grinding high-carbon steel, high-speed steel, and thin-walled components. In addition, it can be used as a polishing material, foundry sand, blasting media, catalyst carrier, and in the production of special ceramics and refractory materials.
Shandong Haixin supplies Chrome Fused Alumina with customized chromium content and particle size distribution to meet diverse application requirements. It is suitable for use in high-end refractory castables, precast components, and specialized refractory brick systems.