$Raw Materials for Refractory:Abrasive Black Silicon Carbide/Carborundum Grit System 1$
$Raw Materials for Refractory:Abrasive Black Silicon Carbide/Carborundum Grit System 2$

$Raw Materials for Refractory:Abrasive Black Silicon Carbide/Carborundum Grit$

$Raw Materials for Refractory:Abrasive Black Silicon Carbide/Carborundum Grit System 1$

$Raw Materials for Refractory:Abrasive Black Silicon Carbide/Carborundum Grit System 2$

Raw Materials for Refractory:Abrasive Black Silicon Carbide/Carborundum Grit

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Loading Port:: China main port

Payment Terms:: TT OR LC

Min Order Qty:: 25 m.t.

Supply Capability:: 2000 m.t./month

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Product Description

Product name	Abrasive black silicon carbide/Carborundum
Model No	BA-#20
Brand name	CNBM
Description	Black silicon carbide is produced in an electric-resistance type furnace through fusing quarts sand and petroleum coke and high quality silica with high temperature. Its hardness is between fused alumina and diamond's. higher mechanical intensity than fused alumina's. It is brittle and sharp and has electrical and heat conductivity in some degree. Black silicon carbide, metallic, sic≥95%, stronger than green silicon carbide but softer than green silicon carbide, is mainly used for grinding of cast iron and non-metallic materials.
Advantage	Raw materials are of high quality: pure silicon carbide, guaranteeing the products’ good quality. Sharp knife-edge, having cutting function. Centralized and uniform particle size distribution Electrical conductivity Heat conductivity Chemical stability High thermal conductivity Low expansion coefficient Good abrasion-resistance
Parameter	The shape: polygon Color: black Proportion:3:2 Bulk density:1.45-1.56 g/m³ Mircohardness:2840-3320g/mm2 Mosh hardness: 9.15 Package: 25\kg Composition%:SiO≥92.5%,Free C≤0.3%,Fe2O3≤1.2%
Usage	Black silicon carbide, sic≥98.5%,its toughness is better than green silicon carbide. Mostly for processing low tensile strength of the materials, such as glass, ceramics, stone, refractory materials, cast iron and non-ferrous metals.
Shipping way	By sea, by air, by express
Delivery time	Within 7 days from the receipt of payment
Loading seaport	Shenzhen
Package	25kg/bag with woven bag
Price term	FOB Shenzhen, CFR,, CIF, FCA, EXW ect
Payment term	100% T/T in advance(negotiation)

Abrasive Black Silicon Carbide/Carborundum Grits

Q: How to distinguish the construction fire-proof material rating?: According to national standard GB8624-97,combustion performance of building materials are divided into the following levels: Class A: Incombustible building material: Material that almost never burn. Class B1: Nonflammable building material: Nonflammable materials have good effect of flame resistance. In case of fire it in the air or at high temperature it is difficult to catch fire and spread, and when the fire source is removed, the combustion can stop immediately. Class B2: Combustible?building?material: Combustible materials have good effect of flame resistance. In case of open fire in the air or at high temperature, it will immediately burst into flames and spread the fire quickly, such as wooden column, timber roof truss, wooden stairs, etc. Class B3: Flammable building material: No flame-retardant effect, highly flammable, high risk of fire. According to national standard, the fire?rating of PVC floor must be class B1.

Q: Which brand of thermal insulating refractory is good?: The most famous is the dragon, Morgan, Luyang, which are good at making ordinary thermal insulation materials and whose products are cheap but quality. Guangdong ALISON nanometer aerogel is more expensive. The heat conductivity coefficient is 0.018. It can work under 1000℃

Q: The primary problem, does the gas permeable brick is fired refractory bricks(refractory) ?: gas permeable brick have two types:built-in type and external mounted type. the built-in gas permeable brick and the external mounted gas permeable brick are usually made by fire burning, and small part of bricks are made by the low temperature heat.

Q: How to distinguish the fire?rating of rubber and plastic thermal insulation material?: Fire?rating grading of external wall thermal insulation materials. 1, China's national standard GB8624-97 divides the combustion performance of building materials external insulation materials into the following grade. Level A: Incombustible materials: Almost no burning materials. Level B1: Incombustible materials: Flame-like material has good fire-retardant effect. In case of fire in the air or at high temperature, it is difficult to fire and doesn't spread quickly, and when the fire source is removed after combustion, it stops immediately. Level B2: Incombustible materials: Combustible materials have a certain flame resistance. In case of fire in the air or at high temperature, it will immediately burst into flames, and easily leads to the spread of fire, such as poles, wooden frame, wooden beams and wooden stairs,ect. Level B3 : Incombustible materials: No flame-retardant effect, hidhly flammable and high fire risk. 2, The external wall thermal insulation materials could be divided according to the fire?rating. 1) thermal insulation material that has the level A combustion performance: Spraying inorganic fiber, glass wool, foam glass, ceramic foam, rock wool, foam cement and perlite obturator, and so on. 2), The thermal insulation material that has level B1 combustion performance: Special processed extruded polystyrene board (XPS) / special processed polyurethane (PU), phenolic and polystyrene powder. 3), Thermal insulation materials that have level B2 combustion performance: Molded polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU) and polyethylene (PE), etc. The information given is for reference only. Hope it will help you.

Q: The development prospect of fire-resistant material: I also want to know, who can say, thanks all the way.

Q: What kind of material is refractory bauxite?: Bauxite (aluminous soil; bauxite), also known as alumina or bauxite ore whose main component is alumina oxde, is a hydrated alumina containing impurities. It is an earthy mineral. It is white or gray, and as it contains iron, it is also brownish yellow or light red. Density of 2.4-2.5g / cm3, hardness 1-3, opaque and crispy. It is extremely difficult to melt.

Q: The manufacturing technique of refractory material: The major components of alkaline refractory material include magnesium oxide and calcium oxide. The commonly used alkaline refractory material is magnesia bricks. The magnesia bricks with 80%～85% magnesium oxide has good resistance to basic slag and slag and higher refractoriness than clay bricks and silica bricks. It is mainly used in open hearth, oxygen blowing of converter, electric furnace and smelting non-ferrous metal equipment and other high temperature equipment. Refractory materials applied on special occasions include high temperature oxide refractory materials such as alumina, lanthanum oxide, beryllium oxide, calcium oxide, zirconium oxide, etc., refractory compounds such as carbide, nitride, boride, silicide and sulfide, etc., and high temperature composite materials, including metal ceramics, high temperature inorganic coating and fiber reinforced ceramics, etc. Consult and find reference for efractory materials production equipment, go to http://hi.baidu.

Q: which is better as household fireproof material ?: If it is from the perspective of fire rating inorganic active insulation material for wall thermal, cement foam insulation board, glass beads of insulation movitrified?micro bead?thermal insulation?mortar, rock wool board, glass wool board, ect.. thermal insulation material are Class A fireproofing, polyphenyl board, extruded sheet, phenolic foam board, Polyurethane board, ect..belong to B1 level fireproofing, if it is used for external wall thermal insulation in decorative board, then rock wool board is more often used.

Q: What kinds of refractory materials that can resist 3,000 Celsius degree?: steel fiber reinforced spalling resistant bricks, phosphate bonded high alumina brick with high strength and wear-resistance, and high R.U.L bricks and composite bricks

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