Kaifeng He Cheng Special Refractories Co., Ltd.
Kaifeng He Cheng Special Refractories Co., Ltd.
Alumina hollow ball Alumina hollow ball
Alumina hollow spheres are made by melting chemical grade AL2O3, which is characterized by light weight, closed cells and high temperature resistance. It is an ideal insulation filler for high-temperature furnaces and a high-quality aggregate for high-temperature lightweight refractory castables.
Fused pure calcium aluminate binder Fused pure calcium aluminate binder
Fused pure calcium aluminate binder
Alumina hollow ball Alumina hollow ball
Alumina hollow spheres are made by melting chemical grade AL2O3, which is characterized by light weight, closed cells and high temperature resistance. It is an ideal insulation filler for high-temperature furnaces and a high-quality aggregate for high-temperature lightweight refractory castables.
Tabular corundum Tabular corundum
Tabular corundum is a pure sintered alpha corundum material, which is a compact body that is quickly sintered at a temperature higher than 1900°C without sintering aids. The tabular corundum has approximately 200 μm and well-developed hexagonal plate-shaped alpha corundum crystals. Its excellent thermal volume stability and thermal shock resistance can be attributed to the special microstructure of tabular corundum: few open pores, large crystals, and closed spherical pores trapped by recrystallization during rapid sintering. Tabular corundum has extremely high heat resistance, mechanical strength and abrasion resistance, high chemical purity, excellent insulation properties, and good acid and alkali corrosion resistance. Tabular corundum is the preferred aggregate for unshaped and shaped high-performance refractories. It is widely used in steel, foundry, petrochemical, ceramics and incineration industries. Other application areas include electrical insulators, kiln furniture and catalyst carriers. The ground corundum powder is an excellent product used as a filler for epoxy resin or resin systems. It can be used to obtain the desired high insulation strength, thermal conductivity and abrasion resistance.

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