Black Silicon Carbide

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Black Silicon Carbide

Black silicon carbide is produced by smelting quartz sand, petroleum coke (or coal coke), wood chips, and other raw materials in a resistance furnace. It appears as a black opaque body with hexagonal crystals and a Mohs hardness of 9.15. Second only to diamond and boron carbide, it possesses brittle and sharp properties with a certain degree of conductivity.

Applications

Abrasives: Primarily used in the production of grinding wheels, sandpaper, oilstones, grinding heads, polishing pastes, and for surface grinding and polishing of monocrystalline silicon, polycrystalline silicon, and various devices in photovoltaic products.
Advanced refractories: It can serve as a deoxidizer in metallurgy and a high-temperature resistant material for manufacturing high-temperature furnace components and support parts.
Functional ceramics: Not only can it reduce kiln capacity, but it also improves kiln product quality and shortens cycles. It is ideal for indirect material production of ceramic glaze firing and sintering, high-temperature non-oxide ceramics, and reaction sintered ceramics.
Non-ferrous metals: Applied in the steel industry, metallurgical ore dressing industry, and more.

Typical Physical Properties

Mohs Hardness	9.15
Melting Point	2250℃
Maximum Use Temperature	1900℃
True Density	3.2-3.4g/cm3

Grit Size & Chemical Analysis

Grits Size	F8 F10 F12 F14 F16 F20 F22 F24 F30 F36 F40 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220 P12 P16 P20 P24 P30 P36 P40 P50 P60 P80 P100 P120 P150 P180 P220#
Chemical Composition (%)	SIC	98-99%
	F.C	≤0.2
	Fe2O3	≤0.2

Micropowder Size & Chemical Analysis

Micropowder Size	P Standard	P240 P280 P320 P360 P400 P500 P600 P800 P1000 P1200 P1500 P2000 P3000 P4000 P5000
	W Standard	W63 W50 W40 W28 W20 W14 W10 W7 W5 W3.5
	FEPA Standard	F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200
	JIS Standard	240# 280# 320# 360# 400# 500# 600# 700# 800# 1000# 1200# 1500# 2000# 2500# 3000# 4000#
Chemical Composition (%)	SIC	97-99
	F.C	≤0.3
	Fe2O3	≤0.3

Production Flow

Production Flow of Black Silicon Carbide Grit

Smelting
Smelting into blocks
Crushing
Dust extraction and screening
Loading into warehouse

Production Process of Black Silicon Carbide Micro Powder

Black silicon carbide processing
Wind classification
Acid pickling tank

Overflow tank
Sedimentation pool
Drying
Sieving

Packaging

25KG Small bags
Bulk bags
Small bags pallet