Raw Materials for Refractory:White Fused Alumina (99.2% Al2O3, 0.3% Na2O)
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Packaging & Delivery
Packaging Detail: | 25kg bag or ton bag or as your requirement. |
Delivery Detail: | within 20 days delivery after receipt of advance payment. |
Specifications
99% high purity abrasive White fused alumina for refractory
1.White fused alumina99%
2.Refractory: 0-1mm, 1-3mm, 3-5mm, 5-8mm
Products discription
1.Introduction
The main raw material of white fused alumina is high grade processed alumina, which is fused with the carbon material and scrap iron in the electic furnace under the high temperature of above 2200°C.The product is characterized by low expansion coefficient, high refractoriness, good thermal and chemical stability.
2. Grain size commonly used
Refractory: 0-1mm, 1-3mm, 3-5mm, 5-8mm ,200#-0, 325#-0.
Abrasives: F24-F60.
Sandblasting abrasive:F10-F240.
Precision casting: F80-100, F100-F120.
Ceramic & electronic polishing:F240-800.
3.Physical properties of White Fused Alumina
Item | Color | Color System | Mohs Hardness | Melting Temperature(°C) | Refractory Temperature(°C) | True Density( g/cm3) | Magnetic Material |
Specification | white |
trigonal system | min10 | 2250°C | 1900°C | min3.50 | max0.003%
|
4.Chemical index of White Fused Alumina
Purpose | Specification | Chemical composition(%) | Magnetic material content(%) | ||||
Al2O3 | Na2O | SIO2 | CaO | ||||
For abrasive | F | 12#—80# | min99 | max0.6 | max0.4 | max0.003 | |
90#—150# | min98.5 | max0.003 | |||||
180#—240# | min98.2 | max0.7 | max0.4 | max0.002 | |||
For refractory | Size sand | 0—1mm | min99 | max0.5 | max0.4 | max0.003 | |
1—3mm | |||||||
3—5mm | |||||||
5—8mm | |||||||
Fine powder | 200#—0 | min98.5 | max0.5 | max0.5 | max0.003 | ||
325#—0 |
WE CAN ALSO DO NA2O:0.3% MAX IF CLIENT SPECIAL NEED.
- Q:For refractory, why is it necessary to store the first mixing materials for some time under proper moisture and temperature?
- It is mainly to remove gas form chemical reactions in the pug, give full play to plasticity and binding properties of combined, and store unburned?brick whose cememting agent is phosphoric?acid or aluminium?phosphate for some time under proper moisture and temperature. For example, to avoid the formed bricks in the initial stage of drying and firing form cracking due to hydration of calcium oxide. Mixing materials is to store the first mixing materials for some time under proper moisture and temperature in order to improve the evenness and moldability of pud, such as making the distribution of combined clay and water more even. The length of storing chiefly depends on the process requirements and the characteristics of blanks. For the producing pug of high temperature kiln furnitures, the storing time is longer. The function of storing mxing materials varies with different natures of blanks. For honeycomb ceramics, it is to fully digest calcium oxide in blanks. For storing magnesia brick blanks containing much calcium oxide, it should be stored for some time in proper humidity and temperature.
- Q:What materials are needed to make the amorphous refractory bricks?
- The amorphous refractory brick is composed of a certain proportion of aggregate and powder, a binder and an additive, and it can be directly used or used after allocation with some liquids. The amorphous refractory brick is a new type of refractory material without calcination, its refractoriness is below 1580℃.There is a wide variety of refractory materials. According to the production method and usage thereof can be divided into concrete, castable, plastic refractory, ramming refractory, gunning mix, sling refractory, coating material, dry ramming mix , fire clay, and all kinds of repairing mass(Asphalt combined with large surface charge compensation, Martin also belongs to the shape of the amorphous refractory material).
- Q:How to divide fire rating of decorating materials ?
- level A: incombustible, B1: Flame retardant, Level B2: combustible, Level B3: Flammable.
- Q:What does the function of SiC for refractories?
- The main feature is with high temperature, the wear gold resistance of refractory is recognized by our customers. Hope my answer will help you.
- Q:What are included in roof thermal insulation fireproofing material?
- Aluminium foil, bubble, aluminium foil/air bubbles/fireproofing aluminium foil thermal insulation material, fireproofing bubble thermal insulation material, fire?retardant thermal insulation material, thermal insulation construction materials, aluminum foil insulation material.
- Q:What is the material of fire resistant glass reinforced plastics grating?
- What is the material of fire resistant glass reinforced plastics grating?
- Q:What are the specifications of fire resistant bag?
- Fire resistant bag is featured by wear resistance, resistance to heat, shock, acid and alkali, somke, fire, bacteria, mould and static electricity. Fire resistant bag is generally used for table top, desktop, wall face, cabinet, office furniture, wall-hung cupboard, etc. The common specifications include: 2135mm×915mm, 2440mm×915mm, 2440mm×1220mm, thickness 0.6-1.2mm. I hope it can help you.
- Q:how long is the fire endurance of plasterboard?
- Gypsum board is flame retardant materials, combustion performance rating B1, but when mounted on a steel joist, it can be seen as rating A(non-combustible material) . So it is fine to use as a ceiling. You can randomly choose several samples to run some tests at the quality inspection insititute and the quality of these samples are subject to the testing results.
- Q:What are the commonly used admixture for alumina-magnesia refractory? What are the impacts on its performance?
- Sodium silicate, pure calcium aluminate cement, boric acid
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Raw Materials for Refractory:White Fused Alumina (99.2% Al2O3, 0.3% Na2O)
- Loading Port:
- China Main Port
- Payment Terms:
- TT OR LC
- Min Order Qty:
- -
- Supply Capability:
- -
OKorder Service Pledge
OKorder Financial Service
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