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Product introduction of Alumina powder
Aluminum oxide powder is alumina Al2O3 solid powder, usually processed into α- Alumina powder β- Alumina powder γ- Alumina powder is used for different purposes.
α Aluminum oxide powder has very stable physical and chemical properties, high hardness, wear resistance, high mechanical strength, insulation, high temperature resistance, low combustion capacity, low thermal expansion coefficient, good thermal conductivity, etc, α Alumina is usually used as abrasive, toughening agent, refractory, polishing material, etc.
β- Aluminum oxide powder and γ- Aluminum oxide powder, also known as active aluminum oxide powder, has rich pore structure and large specific surface area, and is usually used as dehydrating agent, catalyst, catalyst support, etc.
α-Alumina Micropowder/Activated Alumina Micropowder
α- High quality industrial aluminum oxide and aluminum hydroxide additive technology are used in the production of aluminum oxide powder. After low-temperature phase change calcination, advanced grinding technology and process are used to produce activated aluminum oxide powder, which is characterized by large activity and small particle size.
It is especially suitable for stereotyped products and refractory castables, plastics, repair materials, paint spraying, coating materials and other stereotyped refractory materials. It has a strong role in improving the high-temperature strength of refractory materials and improving the corrosion resistance of materials.
Application of Alumina powder
Unshaped refractory materials: refractory castables, self flowing materials, repair materials, iron hook materials, etc.
Shaped refractory: refractory preforms: breathable bricks, base bricks, non carbon steel coated bricks, RH impregnated pipe castables, furnace covers, etc. Machine pressing products: high alumina bricks, high chrome bricks, magnesia spinel bricks, slide plates, nozzle bricks, etc.
Parameters of Alumina powder
| α-Alumina Micropowder | KRHA-101 | KRHA-101 | KRHA-102 | KRHA-102 | KRHA-103 | KRHA-103 |
| Guarantee | typical | Guarantee | Typical | Guarantee | Typical | |
| Al2O3, % | ≥99.5 | 99.52 | 99.5 | 99.6 | >99.5 | 99.53 |
| K2O+Na2O, % | ≤0.20 | 0.13 | <0.20 | 0.14 | ≤0.25 | 0.15 |
| Fe2O3, % | ≤0.05 | 0.02 | ≤0.05 | 0.02 | ≤0.08 | 0.03 |
| SiO2, % | ≤0.15 | 0.08 | ≤0.15 | 0.08 | ≤0.15 | 0.09 |
| D50, μm | <2.0 | 1.7 | 2.0~3.0 | 2.4 | 3.0~5.0 | 3.5 |
| α-A12O3, % | ≥93 | 95 | >93 | 95 | >93 | 96 |
| True Density, g/cm3 | >3.93 | 3.96 | >3.93 | 3.96 | > 3.93 > | 3.96 |