Refractory high alumina bauxite is a commonly used refractory material, widely used in steel, cement, glass, chemical and other industrial fields. This article will introduce in detail the properties, applications and characteristics of high-alumina bauxite.
One:Properties of high alumina bauxite
Refractory high alumina bauxite is a refractory material mainly composed of kaolin, bentonite and other auxiliary materials. Its main components are alumina and aluminum silicate. It has high compressive strength, excellent heat resistance and chemical stability, and is an excellent refractory material.
The main properties of refractory high alumina bauxite are as follows:
1.High heat resistance
High-alumina bauxite has excellent heat resistance and can withstand extremely high temperatures, generally reaching over 1700°C. Therefore, it is a refractory material very suitable for use in high temperature environments.
2. High compressive strength
The compressive strength of high-alumina bauxite is also very high and can withstand huge pressure. This is because its physical structure is very tight and can effectively resist damage from external forces.
3. Good chemical stability
High-alumina bauxite has excellent chemical stability and can remain stable in acidic and alkaline environments. It will not be corroded by strong acids or alkalis and is not susceptible to oxidation.
Two: Application of high aluminum bauxite
Because high-alumina bauxite has good heat resistance, compressive strength and chemical stability, it is widely used in various industrial equipment in high temperature and corrosive environments. Mainly used in the following fields:
1. Steel smelting
High-aluminum bauxite is used in steel smelting to manufacture steel-making furnaces, converters and other forging equipment.
2. Cement production
In the cement production process, high-alumina bauxite is used to make refractory materials for kiln heads, kiln tails and kiln linings.
3.Chemical industry
High-alumina bauxite is widely used in the chemical industry to manufacture reactors, catalytic converters, heat exchangers and other equipment.
4.Glass manufacturing
High-alumina bauxite is also an indispensable material in the glass manufacturing process. It can make glass kilns, insulation panels, etc.
Three:Characteristics of high-alumina bauxite refractory materials
High-alumina bauxite has the following significant characteristics:
1. Strong heat resistance
High-alumina bauxite is very heat-resistant and can withstand extremely high temperatures. This makes it ideal for use in a variety of equipment in high temperature and corrosive environments.
2.Excellent compressive strength
High-alumina bauxite has very high compressive strength and can withstand huge pressure, which greatly extends its service life.
3. Better corrosion resistance
High-alumina bauxite has excellent chemical stability and can remain stable in acidic and alkaline environments. It will not be corroded by strong acids or alkalis and is not susceptible to oxidation.
4. Very good antioxidant properties
Refractory high alumina bauxite has good oxidation resistance and can effectively resist oxidation at high temperatures.
5. Easier to process
High-alumina bauxite is relatively soft and can be easily processed into various shapes, making it easy to use.
|
Item |
SNR88 |
SNR86 |
SNR85 |
|
Al2O3 (%) |
>88 |
>86 |
>85 |
|
Fe2O3 (%) |
<1.6 |
<1.8 |
<2 |
|
SiO2 (%) |
<5.5 |
<7 |
<8 |
|
TiO2 (%) |
<4.0 |
<4.0 |
<4.0 |
|
CaO+MgO (%) |
<0.4 |
<0.4 |
<0.4 |
|
R2O (%) |
<0.4 |
<0.4 |
<0.4 |
|
B.D. (g/cm3) |
>3.25 |
>3.2 |
>3.1 |
|
Moisture |
<0.3 |
<0.3 |
<0.4 |

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