Silicon carbide used in industry is a synthetic material, commonly known as emery. Silicon carbide is one of the most commonly used non-oxide refractory raw materials in the field of refractories.
Silicon carbide SiC for conventional abrasive
Silicon carbide used in industry is a synthetic material, commonly known as emery. Silicon carbide is one of the most commonly used non-oxide refractory raw materials in the field of refractories. Clay-bonded silicon carbide, oxide-bonded silicon carbide, silicon nitride-bonded silicon carbide, recrystallized silicon carbide, reactive sintering silicon carbide and other products produced from silicon carbide
And amorphous refractories are widely used in blast furnaces, zinc smelting furnaces in metallurgy industry, kiln furniture in ceramic industry, etc.
Silicon carbide is available in black and green varieties. The content of SiO2 in the siliceous raw material is as high as possible and the impurity content is as low as possible when treating green silicon carbide; while the content of SiO2 in the production of black silicon carbide raw material can be slightly lower.
In the production of advanced silicon carbide refractories such as Si3N4-SiC, recrystallized SiC (R-SiC) and reactive sintered silicon carbide (Sisic), it is best to use shaped SiC sand. In the production of silicon carbide kiln furniture of the above materials, shaped SiC sand is widely used abroad, and the density, strength and oxidation resistance of kiln furniture have been significantly improved.
particle size range |
SiC> |
FC≤ |
Fe2O3 |
F4~F90 P12~P100 |
98.6 |
0.20 |
0.40 |
F100~F150 P120~P150 |
98.10 |
0.25 |
0.50 |
F180~F220 P180~P220 |
97.20 |
0.30 |
0.55 |
F230~F280 P240~P360 |
97.20 |
0.30 |
0.55 |
F320~F500 P400~P1000 |
97 |
0.35 |
0.60 |
F600~F800 P200~P1500 |
96.5 |
0.40 |
0.60 |
F1000~F1200 P2000~P2500 |
95.5 |
0.50 |
0.70 |
F4~F90 P12~P100 |
99.10 |
0.20 |
0.20 |
F100~F150 P120~P150 |
98.6 |
0.25 |
0.45 |
F180~F220 P180~P220 |
98.00 |
0.25 |
0.50 |
F230~F280 P240~P360 |
98.00 |
0.30 |
0.50 |
F320~F500 P400~P1000 |
97.50 |
0.30 |
0.50 |
F600~F800 P200~P1500 |
97.00 |
0.35 |
0.50 |
F1000~F1200 P2000~P2500 |
96.50 |
0.40 |
0.50 |
particle size range |
SiC%≥ |
FC%≤ |
Fe2O3%≤ |
F4~F90 P12~P100 |
98.10 |
0.25 |
0.50 |
F100~F150 P120~P150 |
97.60 |
0.30 |
0.60 |
F180~F220 P180~P220 |
96.70 |
0.35 |
0.65 |
F230~F280 P240~P360 |
96.70 |
0.35 |
0.65 |
F320~F500 P400~P1000 |
96.50 |
0.40 |
0.70 |
F600~F800 P200~P1500 |
96.00 |
0.45 |
0.70 |
F1000~F1200 P2000~P2500 |
95.00 |
0.55 |
0.80 |
F4~F90 P12~P100 |
98.00 |
0.25 |
0.25 |
F100~F150 P120~P150 |
98.10 |
0.30 |
0.50 |
F180~F220 P180~P220 |
97.50 |
0.30 |
0.60 |
F230~F280 P240~P360 |
97.50 |
0.35 |
0.60 |
F320~F500 P400~P1000 |
97.00 |
0.35 |
0.60 |
F600~F800 P200~P1500 |
96.50 |
0.40 |
0.65 |
F1000~F1200 P2000~P2500 |
96.00 |
0.45 |
0.65 |
Silicon carbide uses
1. Main use: used for wire cutting of 3-12 inch monocrystalline silicon, polycrystalline silicon, potassium arsenide, quartz crystal, etc. Solar photovoltaic industry, semiconductor industry, piezoelectric crystal industry engineering processing materials.
2. Chemical industry, abrasives industry, steel industry, etc.
Silicon carbide is also called moissanite. Among contemporary C, N, B and other non-oxide high-tech refractory raw materials, silicon carbide is the most widely used and most economical one, which can be called gold steel sand or refractory sand. At present, China's industrially produced silicon carbide is divided into two types: black silicon carbide and green silicon carbide, both of which are hexagonal crystals with a specific gravity of 3.20-3.25 and a microhardness of 2840-3320kg/mm2.
White corundum is made from industrial alumina powder, which is smelted in an arc at a high temperature above 2000 ℃ and then cooled. After crushing and shaping, magnetic separation to remove iron, it is divided into various particle sizes.
Silica brick is an acidic refractory mainly composed of tridymite, cristobalite and a small amount of residual quartz and glass phases
Insulating high alumina refractory bricks mainly refer to refractory products with an aluminum content of more than 48%. They are also called lightweight high-alumina bricks or heat-insulating high-alumina bricks due to their advantages of low bulk density, light weight, and good heat insulation effect. . It is a kind of thermal insulation refractory brick commonly used in high temperature industrial kilns and thermal equipment.
High alumina castable is a refractory castable made of high alumina bauxite clinker as aggregate and refractory clay as powder, adding aluminate cement and sodium tripolyphosphate according to the formula proportion
Fireclay bricksis suitable for supporting hot blast stoves of large, medium and small blast furnaces
Anhydrous tap hole mix for blast furnace tap hole
The unshaped refractory material used when repairing the lining of thermal equipment by spray construction method is called refractory gunning material. It is made of a refractory set with a certain particle gradation
Magnesia alumina bricks use periclase as the main crystal phase and magnesia-alumina spinel as the matrix. They are better in thermal shock resistance than magnesia bricks. In order to improve the thermal shock resistance of magnesia bricks, alumina or alumina is introduced into the ingredients. Bauxite clinker fine powder to form a magnesia-alumina sharp stone matrix, thereby making magnesia-alumina bricks
White corundum is made from industrial alumina powder, which is smelted in an arc at a high temperature above 2000 ℃ and then cooled. After crushing and shaping, magnetic separation to remove iron, it is divided into various particle sizes.
Silica brick is an acidic refractory mainly composed of tridymite, cristobalite and a small amount of residual quartz and glass phases
Insulating high alumina refractory bricks mainly refer to refractory products with an aluminum content of more than 48%. They are also called lightweight high-alumina bricks or heat-insulating high-alumina bricks due to their advantages of low bulk density, light weight, and good heat insulation effect. . It is a kind of thermal insulation refractory brick commonly used in high temperature industrial kilns and thermal equipment.
High alumina castable is a refractory castable made of high alumina bauxite clinker as aggregate and refractory clay as powder, adding aluminate cement and sodium tripolyphosphate according to the formula proportion
Fireclay bricksis suitable for supporting hot blast stoves of large, medium and small blast furnaces
Anhydrous tap hole mix for blast furnace tap hole
The unshaped refractory material used when repairing the lining of thermal equipment by spray construction method is called refractory gunning material. It is made of a refractory set with a certain particle gradation
Magnesia alumina bricks use periclase as the main crystal phase and magnesia-alumina spinel as the matrix. They are better in thermal shock resistance than magnesia bricks. In order to improve the thermal shock resistance of magnesia bricks, alumina or alumina is introduced into the ingredients. Bauxite clinker fine powder to form a magnesia-alumina sharp stone matrix, thereby making magnesia-alumina bricks
White corundum is made from industrial alumina powder, which is smelted in an arc at a high temperature above 2000 ℃ and then cooled. After crushing and shaping, magnetic separation to remove iron, it is divided into various particle sizes.
Silica brick is an acidic refractory mainly composed of tridymite, cristobalite and a small amount of residual quartz and glass phases
Insulating high alumina refractory bricks mainly refer to refractory products with an aluminum content of more than 48%. They are also called lightweight high-alumina bricks or heat-insulating high-alumina bricks due to their advantages of low bulk density, light weight, and good heat insulation effect. . It is a kind of thermal insulation refractory brick commonly used in high temperature industrial kilns and thermal equipment.
High alumina castable is a refractory castable made of high alumina bauxite clinker as aggregate and refractory clay as powder, adding aluminate cement and sodium tripolyphosphate according to the formula proportion
Fireclay bricksis suitable for supporting hot blast stoves of large, medium and small blast furnaces
Anhydrous tap hole mix for blast furnace tap hole
The unshaped refractory material used when repairing the lining of thermal equipment by spray construction method is called refractory gunning material. It is made of a refractory set with a certain particle gradation
Magnesia alumina bricks use periclase as the main crystal phase and magnesia-alumina spinel as the matrix. They are better in thermal shock resistance than magnesia bricks. In order to improve the thermal shock resistance of magnesia bricks, alumina or alumina is introduced into the ingredients. Bauxite clinker fine powder to form a magnesia-alumina sharp stone matrix, thereby making magnesia-alumina bricks