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 grades are fire resistance of fireproofing glass divided into?
According to the fire resistance levels, it can be divided into three categories: Class A, it's a kind of fireproofing glass that can satisfy the requirements of refractory integrity, refractory and thermal insulation at the same time. This kind of glass has the properities of transmittance,fireproofing(smoke insulation, fire resistance, and keeping out thermal radiation), sound insulation, shock resistance. Class B, it's a kind of fireproofing glass that can satisfy the requirements of refractory integrity, refractory and thermal insulation at the same time. Such kind of fireproofing glasses mostly are composite fireproofing glasses and has characteristics of transmittance,fireproofing and smoke insulation. Class C, it's a kind of fireproofing glass that only satisfies the requirements of refractory integrity. This kind of glass has characteristics of transmittance, fireproofing, smoke insulation and high strength,etc.
Q:What is the the best matching ratio of refractory cement?
Refractory cement is very easy to use. Add some water and mix, and it will harden. Generally there is no need to add other binding agents, but you can add some refractory aggregate and powder. If you use only refractory cement, it will produce a lot of cracks after high temperature. Generally refractory cement can withstand temperature of about 1300 degrees. Refractory cement can be used together with ordinary sand, and the ratio of cement and the sand is about 30 percent.
Q:What refractories are accessible with ease in daily life? This material is suitable as a disposable mold and crucible for melting brass.
Common red brick and refractory brick.
Q:What are the characteristics of the carbon composite refractories?
The features of carbon composite refractories: 1. It is with an aggressive high thermal shock resistance 2. Good resistance to molten steel and slag
Q:what is the material of fixed first rate fire resistant window?
Fixed first rate fire resistant window is produced by the steel sash windows, steel casement, fireproofing glass. Fireproof windows, is composed by steel window frame, steel casement, fire-proofing glass. it refers to the window which can isolate and stop the fire spreading. The fire window product is named after the main material of window frame and the window casement, window frames is made of steel, casement is made of wood or the sash frame is made of wood and the casement is made of fire window.
Q:Which industry does refractory belong to?
It belongs to decoration industry.
Q:What are the grades of refractory exterior wall thermal insulation materials?
Classification of fire rating of extrior thermal insulation materials 1, According to national standard GB8624-97, the combustion performance of building materials are divided into the following grades A level: Incombustible building materials: Materials hardly burn. B1 class: Flame-retardant building materials: Flame-retardant material has good flame resistance. In case of fire in the air or at high temperature, it is difficult to catch fire and the fire will not spread quickly. And when the combustion source is removed, the burning will stop immediately. B2 Class: Combustible building materials: Combustible materials have a certain flame retardancy. In case of fire in the air or at high temperature, it will immediately burst into flames and it is easily to spread fire, such as wooden column, wooden roof truss, wooden beams and wooden stairs, etc. B3 level: Inflammable building materials: It has no flame retardant effect, and it is extremely inflammable, and the risk of fire is high. Classification of exterior wall thermal insulation materials according to fire rating: 1. Thermal insulation materials with A-level combustion performance Rock wool, glass wool, foam glass, foamed ceramic, foam cement, hole-closed perlite, etc. 2, Thermal insulation materials with B1-level combustion performance: Extruded polystyrene board (XPS) after special treatment / polyurethane (PU) after special treatment, phenolic aldehyde, gelatine powder polystyrene granule, and etc. 3. Thermal insulation materials with B2-level combustion performance: Molded polystyrene board (EPS), extruded polystyrene board (XPS), polyurethane (PU), polyethylene (PE), etc.
Q:What's the difference of fire-resistant material's density, specific gravity and bulk specific gravity?
It usually used to test lightweight refractory. Density can be divided into apparent density (usually called as density) and true density: apparent density includes blow hole inside the sample; Unit weight is using quality to divide volume of sample and specific weight is used to represent liquid.
Q:what is the original materials of fireproof coating?
Fire retardant coating is composed of the base materials (that is film forming substance), pigments, ordinary coating additives, fire retardant agent and dispersion medium.
Q:What material is refractory material?
alumina refractory concrete, silica brick clay brick, metal ceramic, high temperature machine coating fiber reinforced ceramics, diatomite product, asbestos products, insulation board refractory. The definition of refractory can be searched in the website.

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