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Calcined Alumina (RA) Series for Refractory Materials

Calcined Alumina (RA) Series for Refractory Materials

YUFA Group has developed high-performance refractory calcined alumina based on its more than 30 years of production experience.

The calcined alumina refractory raw materials produced through the use of exclusive production technology and advanced rotary kiln and tunnel kiln equipment sell well in more than 40 overseas markets.

Features

1. With high bulk density, reduce the water consumption of unshaped refractories

2. The original crystal is small in size, has superior sintering activity and volume stability

3. Reduce or replace the amount of other ultra-fine powders and improve the high-temperature mechanical properties of refractories


Product Detail

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Specification

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

Applications

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RA 用途

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