Black Silicon carbide is produced at high temperature in an electric resistance type furnace with quarts sand and petroleum coke.
Silicon Carbide is produced by a process involving the electrochemical reaction of silica – in the form of quartz with Carbon in the form of raw petroleum coke. The stoichiometric mixture is reacted in an electrical resistance furnace at a temperature greater than 2200˚C to yield high quality crystals. The large crystals are then segregated, crushed, cleaned of magnetic impurities in high intensity magnetic separators and classified into narrow size fractions to suit the end use. Dedicated lines produce products for different applications.
Description of items |
BLACK |
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SiC |
98.0-99.4% |
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Fe2O3 |
0.05-0.40% |
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F.C |
0.06-0.20% |
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Melting point(℃) |
2250 |
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Maximum service temperature (℃) |
1900 |
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Specific Gravity |
3.20g/cm3 |
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Mohs Hardness |
9.15 |
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Production Sizes |
GRIT |
JIS |
#16 #20 #24 #30 #36 #46 #54 #60 #70 #80 #90 #100 #120 #150 #180 #220 |
FEPA |
F16 F20 F22 F24 F30 F36 F40 F46 F54 F60 F70 F80 F90 F100 F120 F150 F180 F220 |
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Powder |
JIS |
#240 #280 #320 #360 #400# #500 #600 #700 #800 #1000 #1200 #1500 #2000 #2500 #3000 #4000 #6000 #8000 #10000 |
|
FEPA |
F230 F240 F280 F320 F360 F400 F500 F600 F800 F1000 F1200 F1500 |
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M |
4# 3# M28 M20 M14 M10 M7 M5 |
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Boron carbide is a compound that contains boron and carbon, especially B4C; an extremely hard, non-metallic, black crystalline compound or solid solution.
White fused alumina was made from the high quality alumina by melting above 2000 in the electric arc furnace and cooling.
Ceramic Foundry sand is a kind of refractory particle with diameter of 0.053-2.0mm.Mainly made of Al2O3·SiO2. It is ball-shaped particle made from bauxite,by high-temperature melting in electric-arc furnace, spraying and cooling.
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