Calcined corundum is a new variety developed by our company, which undergoes high-temperature 1100C secondary calcination

● Silicon iron alloy can be separated from corundum particles to enhance magnetic separation effect.

● It can improve the strength and hydrophilicity of abrasives, and increase toughness.

● The oxidation of low valence bowls in calcined diamond sand into high valence bowls is beneficial for eliminating abnormal expansion during grinding and avoiding "lattice cracks"