Calcined Alumina Refractory Powder

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Product Description:

Specifications

1.heat resistant
2,material origin: alumina from Australia
3, produced as per general international law of Bayer
4,ISO, SGS.

Features:
1,heat-resistance and corrosion-resistance
2,Superior quality with competitive price
3, superior material from Australia          
   

Product Description:

Taking the superior industrial alumina as raw material, Calcined Alumina is produced through the method of advanced high temperature down draught kiln with scientific calcine. These make sure it has the advantages as follows: less trash, high transfer rate, stable contraction, and great variety of goods. The shape is fine sand or powdery with white color, As its equal particle sizes and dispersing easily, it has a good sinterability. Calcined Alumina is the basic raw material for heat-resistance and corrosion-resistance products, such as high-alumina refractory, high level ceramic products, car used sparking plug, electronic ceramic parts, material for iron and steel oven, high temperature friction material and polishing grinding products, ect.

Calcined Alumina Parameters

ApplicationModelAl2O3Na2OFe2O3SiO2TiO2LOITrue Densitya-Al2O3D50Particle SizeSpecific Surface
Unit≥ %≤%≤%≤%≤%≤%g/m3≥ %umumm2/g
Dry pressing/CIP seriesTCH-10199.70.080.020.0180.0060.153.9696752--30.6-0.8
TCH-10299.60.10.020.0180.0060.153.9595752--30.6-0.8
TCH-10399.50.20.020.0180.0060.23.9595752--30.8-1.0
TCH-10599.40.30.020.0180.0060.23.9393752--30.8-1.0
Injection mouldingTCH-21399.50.150.020.0180.0060.153.9595753--40.5-0.6
TCH-21199.70.10.020.0180.0060.13.9696753--50.5-0.6
Refractory seriesTCH-3199.40.30.020.0180.0060.153.9290752--30.1-0.8
TCH-3099.50.250.020.0190.0080.13.959532--41.0-1.2
TCH-3399.40.30.020.0180.0060.153.9595432--30.9-1.0
TCH-00399.40.30.020.0180.0060.133.959543--51.0-1.2
TCH-35990.30.020.020.0060.23.990433--50.9-1.0
Active A-Al2o3TCH-5H98.80.150.020.15 3.95951
TCH-5L98.60.150.020.15 3.93930.8
Polishing seriesTCH-61970.10.1-0.20.18-2 3.959540-60
TCH-62970.10.1-0.20.18-2 3.95954--5
TCH-63980.10.05-0.60.18-0.2 3.97954--5
Glazing seriesTCH-799.60.20.020.018 3.959555
TCH-70399.60.20.020.018 3.959515
TCH-71399.60.20.020.018 3.95954


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Q:What are the specifications of refractory kilns ?
Rotating equipment is widely used in mechanical, physical or chemical treatment of solid materials in building materials, metallurgy, chemical and environmental protection industry. Such equipment is called rotary kiln. The best materials are magnesia-chrome bricks, unfired magnesite-chrome bricks, silmo bricks, magnesia-alumina spinel bricks, magnesia calcium zirconate bricks, iron magnesia bricks and castables.
Q:Who knows about the criteria of fireproof and thermal insulation materials?
Seven levels are divided according to "The classification of combustion performance of building materials and products", namely, A1, A2, B, C, D, E, F. It mainly refers to the combustion performance of materials. You can check on this standard for the specific dividing evidence. There are detail charts which mainly describe that whether there is drip or not, the ignition time, continuous burning time and so on.
Q:Who knows what kind of fire prevention materials are there?
Plant use general steel structure more often without too much modification. If there is a need for modification, boards which can meet the requirements of fireproof are suitable, such as gypsum boards and aluminium sheets. As for coating, it is favorable to use coating that has fine powder, high density and better sealing. Hardening agent mainly depends on the specific requirements.
Q:How many external wall thermal insulation fireproof material are there
Class A exterior wall insulation: Rock wool, glass wool, silicate, aluminum silicate, calcium silicate, phenolic foam, foam glass
Q:Why the corundum can be used as refractory
Do you need white corundum Its main chemical element of corundum is the 99.3% aluminium oxide and it is sintered byelectric furnace, so it can be used as a refractory raw material, the other can also be used as grinding wheel. It is very useful
Q:which kind of material is chosen for fireproofing window?
Firstly, fireproofing window glass must be tempered, ordinary glass won't play a role of fireproofing, and fireproofing window fan is fixed, can't be open, if you can open it, it won't play a role of fireproofing. And you can ask the property to provide texture report of fireproofing windows, fireproof material stipulated by our national fire protection laws and regulations must have fireproofing inspection reports, there must be. and fire window glass should have a fireproofing sign. The main role of fireproofing window is to isolate the fire, and play a role of fireproofing and escaping, avoid the fire quickly spread in.
Q:Does anyone know about the classification standards of B2-level fireproof and thermal insulation materials?
The classification standards of B2-level fireproof and thermal insulation materials: 1. the national standard GB8624-97 classifies construction materials combustion performances into several grades, B2-level: combustible building materials: combustible building materials can play a certain role in preventing combustion. It will immediately burst into flames when coming across open fire or at high temperature, and will lead to fire spreading, such as wooden pillars, roof frames and beams as well as stairs. 2.The exterior wall thermal insulation materials can be classified according to fire rating, insulation materials with B2-level combustion performance are: Expanded polystyrene sheets(EPS), Extruded polystyrene board(XPS), Polyurethane(PU), Polyethylene(PE), etc.
Q:Who knows what kind of fire protection material is better?
Characteristic of polyurethane rigid foam thermal insulation decorative composite board: (1) ultra high cost performance, increased property's selling point (high cost performance) new model of thermal insulation material, excellent thermal insulation properties, elegant decorative effect, 50 years of service life, reduce maintenance costs and social waste. (2) it overcomes defects of traditional insulation technology (to solve the freezing and thawing, veneer cracking and shedding) traditional benzene board, the phenomenon of freezing and thawing that is easily appear in plastic extruded sheet, paint finish is easy to crack; its veneer facing can easily fall off; thermal insulation materials and wall are poorly adhered, easy off the whole. There is a themal bridge in dry hanging wall. (the characteristics of polyurethane composite board)
Q:What kind of materials can be tested their electrical resistivity in the current refractory industry?
Graphite, Magnesium Oxide, and alumina are all feasible.
Q:Does anyone know the refractory temperature of fire-resistant glass?
Ordinary glass will burst under sharp temperature difference of about 70-120 degrees and toughened glass of 200 degrees. It is not yet clear for the bursting temperature differences of the refractory glass. If the overall glass is heated evenly, it will have no significant change below 600 degrees, and it will deform with the increase of temperature until melting. The fire-resistant time of the glass you said is the time to heat the glass into the extreme temperature differences it can endure, which should not be more than 10 minutes

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