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Calcined Alumina (RA) Series for Refractory Materials

Features:

  • 1. Fully grinding
  • 2. Low sodium
  • 3. Small primary crystal size
  • 4. Good particle size distribution
  • 5. High activity
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Applications

Parameter

Model No.  Chemical Composition(%) True Density Apparent Density Grain Size +325 Mesh Original Crystal Water Absorption Features Recommended Applications
Al2O3 ≥% SiO2 ≤% Fe2O3 ≤% Na2O ≤% LOI ≤%  g/cm3 ≥ g/cm3 ＞ d50 (μm) ＜% d50(μm) %
RA1G 99.5 0.15 0.04 0.10 0.15 3.92 0.7 1.5-2.2 1 ~1.0 1. Fully grinding
2. Low sodium
3. Small primary crystal size
4. Good particle size distribution
5. High activity		 Used to produce various high-end refractory materials
RA2GL 99.5 0.15 0.04 0.10 0.15 3.94 0.7 2.3-2.7 1 ~2.3 1. Fully grinding
2. Low sodium
3. Small primary crystal size
4. Good particle size distribution
5. High activity
RA2G 99.5 0.15 0.05 0.15 0.1 3.95 0.85 3.0-3.6 2 2.5-3.0 1. Fully grinding
2. Low sodium
3. Small primary crystal size
4. Reasonable particle size distribution
5. Certain activity
RA3GD 99.5 0.08 0.04 0.10 0.1 3.95 0.83 4.0-5.0 2 4.0-4.5 1. Grinding, low sodium
2. High calcination temperature
3. Moderate primary crystal size
4. Good fluidity
5. Large bulk density
RA3G 99.5 0.15 0.05 0.25 0.1 3.93 0.83 4.0-5.0 3 4.0-4.5 T18-22 1. Grinding
2. Medium sodium
3. High calcination temperature
4. Moderate primary crystal size
5. Good fluidity
6. Large bulk density
RA5G 99.5 0.15 0.05 0.25 0.1 3.93 0.85 5.6-6.6 3 5.0-6.0 1. Grinding
2. Medium sodium
3. High calcination temperature
4. Large primary crystal size
5. Good fluidity
6. Large bulk density

FAQ for RA series:

  • 1. How about your price compare to other company's?

    Factory direct price,no medium trading company cost,and with more better quality products.

  • 2. What's your alumina content?

    Usually the alumina will not less than 99.5%,special demands can be customized.

  • 3. What's the Na2O content of your RA series?

    The Na2O will be 0.1%,0.15%,0.25%....which are suitable for different requirements. Also special customized services will be supported.

  • 4. What's the original crystal D50 with your RA products?

    According to different requirements of refractory material,there are: ~1.0. ~2.3. ~ 2.5-3.0. ~4.0-4.5. etc.

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