$Raw Materials for Refractory - High Purity White Fused Alumina System 1$

$Raw Materials for Refractory - High Purity White Fused Alumina$

$Raw Materials for Refractory - High Purity White Fused Alumina System 1$

Raw Materials for Refractory - High Purity White Fused Alumina

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Specifications

High Alumina Castable Refractory
1.Professional manufacturer
2.Al2O3:99.33%min
3.Customized production
4.Passed ISO9001:2008

Industrial Product Refractory Material With High Quality

Thanks for you interest in our products. We have been original factory and professional manufacturer for 18 years ,we have confidence to have your 100% satisfactory .Let us know if anything we can do for you .

White Aluminum Oxide:

White Aluminum Oxide is fused from high quality bayer aluminum in high temperature. Its hardness is higher but toughness lower compared with Brown Aluminum Oxide. It is characterized by high purity, excellent self-sharpening, efficient grinding efficiency, and low frictional heat. It can withstand acid and alkali erosion, with high temperature resistance and good thermo stability.

Applications:

1. It is used as abrasives materials and in lapping processing.

2. It is also used in polishing and acrylic fabric of prettify processing.

3. Sandblasting in producing television screen.

4. It can be used in cutting silicon wafer.

5. Sandblasting in washing teeth model.

6. It could be the molding sand for precision casting.

7. It is high grade refractory and other additives of porcelain.

8. It is used as jeans abrasives materials as well.

Advantages:

a.Professional manufacturer 18 years

b.Al2O3:99.33%min content

c.Customized production

d.Free sample

e.Prompt delivery

f. Output 2000M/T monthly

g.Passed ISO9001:2008 Certofication

Abrasives Grade:

Grit Size	Al2O3	Na2O
F12-220	>99.5%	<0.35%
F230-400	>99.2%	<0.4%
F500-1200	>99.0%	<0.5%

Refractory Grade:

Grit Size	Al2O3	Na2O
0-1mm	>99.5%	<0.4%
1-3mm	>99.5%	<0.4%
3-5mm	>99.5%	<0.4%
200mesh	>99.0%	<0.5%
325mesh	>99.0%	<0.5%

FACTORY:

$High Purity Refractory Castable Raw Material White Fused Alumina$

Q: How to divide the fire resistant level of EVB?: According to the indicators of amount of smoke, heat value, burning rate, and ignition point, combustion performance insulation materials are divided into A (non-combustible), B1 (flame retardant), B2 (flammable), B3 (combustible). It can be divided into the organic and inorganic types: The organic includes polyurethane and polystyrene board, the inorganic the includes glass wool and rock wool. The price of organic is lower, and it is combustible materials, it will produce hydrogen cyanide and other toxic gases when burned, the inhaled would die. The inorganic material is completely non-combustible insulation material.

Q: Kinds of refractory mortar: It needs no heating when hardened. There are two kinds of refractory mortar, the finished products and semi-finished products. Clinker is compounded in proportion according to the hardening temperature. (3) Chemical bonding refractory mortar is made from refractory aggregate and chemical binders (inorganic, high alumina refractory mortar). After this refractory mortar with thermal hardness is hardened, it has some contraction. Ther is a wide variety of refractories used on the constrcuction sites: // a, Advanced refractories (1770 ~ 2000 ℃) and AAA level refractories (2000 ℃ above). It can only be delivered in dry state. Air hardening refractory mortar is often compounded air hardening binders such as sodium silicate. It will harden below ceramic bonding temperature. According to different binding agents.

Q: How long is the fire-fighting time of A class fire resisting window?: Duration of fire resistance of A class fire resisting window is not less than 1.2 hours; B class window is not less than 0.9 hours. And when install fire window, you must use Level to correct or use hanging line method to correct verticality of four directions, making its same horizontally anf vertically. Window frame must be integrated with the building, using wooden or metal parts connected to the wall. After steel frame is installed, cement mortar must be watered between window frame and wall , and is maintained more than 24 hours before normal use.

Q: Are the specification of fireclay bricks and ordinary clay brick the same?: Do you want to know whether the specifications of fireclay bricks and ordinary clay brick are the same?

Q: Who knows the fire resistant level of the rock wool color plate?: The rock wool color steel rock wool board is used in a area of high ??fire safety requirements. According to "interior decoration of buildings for fire protection design", the color steel rock wool board belongd to level A. Its life is more than 15 years and still can be used when the temperature is up to about 700 ℃, with maximum fireproofing hour of six hours. And the rock wool color plate is a environmentally friendly material, the preferred material in the construction industry .

Q: what is the fireproofing material of engine room? who knows it ?: machine room fireproofing materials include: Inorganic binder: The main material includes sodium silicate, gypsum, phosphates, cement,ect.; refractory mineral filler: aluminium oxide, asbestos powder, calcium carbonate, perlite, cornstarch, ect.; nonflammable organic resin: it mainly includes polyvinyl chloride, perchloro-ethylene, chlorinated rubber, neoprene latex, epoxy resin, phenol resin, ect.. nonflammable fireproof addictive: it mainly has phosphorus, halogens, nitrogen organic compounds (chlorinated paraffins, tributyl phosphate,deca-brominated diphenyl ether), and boron series (boric acid, zinc borate, aluminium borate), antimony system, aluminium series, zirconium system, etc. inorganic compounds.

Q: What types does soft fire prevention materials have?: Types of fire resistant species. Mainly listed as follows: finishing fire retardant paint, component fire retardant coating, fire-resistant coating for steel structure and othe kinds of fire retardant coating. Flame retardant plastics and its products, textiles, building materials, flame retardant fabric and exterior wall thermal insulation system products, floor materials, such as various types of fire prevention materials;Fire prevention board, fire doors, fire prevention, fire shutter, fire glass window frame, elevator doors, ventilation pipes, fire blocking material, fire smoke exhaust fan and other kinds of artifacts (resistance) fire prevention. Indicators of judging fire mainly include: difficult to fire, ignition, smoke toxicity, smoke density, heat release and flue gas; fireproof performance, combustion performance and combustion heat value, fire resistance, high temperature resistance, fire rating, etc. And some specific parameter is needed to use professional testing instrument to judge, but to the inorganic lab for understanding, fire prevention level test result accuracy.

Q: what are the types of piping insulation material fire?rating?: according to China's national standard GB8624-97, the combustion performance of construction materials can be divided into several grades grade A: Incombustible building material: Almost no burning material. Class B1: nonflammable building material: nonflammable material has a good flame resistance effect. when it meet the open fire in the air or burnd at high temperature, it is difficult to spread quickly, and when the fire source is removed, the combustion stop immediately. Class B2: flammable building material: flammable material has a good flame resistance effect. when it meets open fire in the air or at high temperature, it will immediately burst into flames and easily cause fire spread, such as wooden column, timber roof truss, timber beam, and wooden stairs,ect.. Class B3: inflammable building material: No flame resisting effects, highly flammable, high fire risk. 2, external wall thermal insulation materials, in accordance with fire rating, can be divided into1) grade A combustion performance thermal insulation material: Rock wool, glass wool, foam glass, foamed ceramics, foam cement, hole-closed perlite ect.. 2) class B1 combustion performance insulation materials: Extruded polystyrene board (XPS) after special treatment / Special treatment of polyurethane (PU), phenolic aldehyde, gelatine powder polyphenyl granule, etc. 3) combustion performance of class B2 insulation material: molding polystyrene board(EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE), etc.

Q: What are the differences of ceramics and refractories? Is the ceramics belonging to refractories?: The ceramics and refractories are different with the porcelain ceramic with high temperature of 1300℃ as household porcelain refractory. The porcelain refractory material of 1450℃ as the same as the aluminum oxide, kaolin, refractory clay and other raw materials demand the deployment ratio of the raw material the same as the temperature.

Q: Who knows the fire endurance of B-level fireproof doors and windows?: Rock wool board of B-grade fireproof doors keeps 46mm in thickness, doors that are generally used in relatively common fire fighting access, while A-grade fireproof doors are generally used in machine rooms, warehouses, oil depots and other important fire fighting access and flammable and combustible pulbic places. B-grade fireproof doors are more widely used than A-grade fireproof doors.

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