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Silicon carbide ceramic's hardness is second only to diamond and cubic boron nitride. Its high hardness results in low wear, prevents material contamination, and makes it suitable for various grinding and dispersing applications; its high thermal conductivity quickly dissipates the heat generated by friction, preventing the grinding material from accumulating heat; its high grinding efficiency and long service life, combined with low operating costs, have led to its widespread use in the sand mill field.

Demand is extremely high for pressureless sintered silicon carbide grinding barrels. The high wear-resistant cyclone silicon carbide lining is a new type of wear-resistant material. This lining material features high hardness, excellent wear resistance, impact resistance, high temperature resistance, and acid and alkali corrosion resistance. Its actual service life is more than 6 times that of polyurethane, and it is especially suitable for grading, concentrating, and dewatering operations of strongly abrasive, coarse-grained materials. It has been successfully applied in many mines.

Physical Properties of Pressureless Sintered Silicon Carbide Ceramic Products

Physical Properties		UNIT	Pressureless Sintered Silicon Carbide
Composition: SiC		vol%	≥98
Density 20°℃		g/cm³	≥3.10
Open Porosity		Vol%	＜3.0
Hardness	Rockwell Hardness 45N	R45N	93
	Vickers Hardness HVI	kg/mm²	2350
Flexural Strength 20℃		MPa	320–400
Flexural Strength1300℃		MPa	300–400
Cofficient of Themal Expansion		10⁻⁶K⁻¹	4
Themal Conductivity 20℃		Wm⁻¹K⁻¹	116
Thermal Conducivity 1200℃		Wm⁻¹K⁻¹	35
Modulus of Elasticity @ RT		GPa	410
Thermal shock resistance		℃	＞350
Mar. Service Temp (air)		℃	approx.1650