China Calcined Alumina (RA) Series for Refractory Materials factory and suppliers

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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

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Specification

Model No.	Chemical Composition(%)					Apparent Density	Grain Size	+325 Mesh	Original Crystal	Features	Recommended Applications
Model No.	Al2O3 ≥%	SiO2 ≤%	Fe2O3 ≤%	Na2O ≤%	LOI ≤%	g/cm3 ＞	D50 (μm)	＜%	D50(μm)	Features	Recommended Applications
RA1G	99.5	0.15	0.04	0.08	0.1	0.7	1.5-2.2	0.5	~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	0.08	0.1	0.75	2.2-2.7	1	~2.2	1. Fully grinding 2. Low sodium 3. Small primary crystal size 4. Good particle size distribution 5. High activity
RA2G	99.5	0.15	0.04	0.08	0.1	0.8	3.0-3.6	1	2.5-3.0	1. Fully grinding 2. Low sodium 3. Small primary crystal size 4. Reasonable particle size distribution 5. Certain activity
RA370	99.5	0.08	0.04	0.08	0.1	0.9	2.2-2.6	0.5	/	1. Bimodal particle size distribution 2. Low Sodium 3. Good ffowability 4. Have certail reactivity
RA3GD	99.5	0.08	0.04	0.06	0.1	0.85	4.0-5.0	1	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	0.15	0.1	0.85	4.0-5.0	1	4.0-4.5	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	0.12	0.1	0.95	5.0-6.0	1	5.0-6.0	1. Grinding 2. Medium sodium 3. High calcination temperature 4. Large primary crystal size 5. Good flowability 6. Large bulk density