Made from industrial alumina and refractory kaolin as the main raw materials, produced through scientific formulation, forming, and high-temperature calcination.
1.High mechanical strength and long service life.
2.Good chemical stability: Does not react chemically with materials.
3.Excellent high-temperature performance: Refractory ceramic balls can withstand temperatures up to 1900 degrees.
Particularly suitable for high and low-temperature shift converters, conversion furnaces, hydrogenation converters, desulfurization tanks, and methanation furnaces in fertilizer plants, dispersing gas-liquid, supporting, covering, and protecting catalysts.
In the iron and steel industry, refractory ceramic balls are used in hot blast stoves and heating conversion equipment. They can be divided into ordinary refractory balls and high alumina refractory balls. Ordinary refractory balls are used in converters and shift converters in the sulfuric acid and fertilizer industries, while high alumina refractory balls are used in hot blast stoves and heating conversion furnaces in industries such as urea and steel.
|
Performance/Type |
Refractory Ball |
Corundum Refractory Ball |
Low-silica Refractory Ball |
|
|
chemical composition(%) |
AI2O3 |
45~90 |
90~98 |
≥99 |
|
SiO2 |
10~70 |
0.5~5.0 |
≤0.3 |
|
|
Fe2O3 |
≤1 |
≤0.5 |
≤0.1 |
|
|
Porosity % |
≤20 |
≤15 |
≤10 |
|
|
Refractoriness ℃ |
≥1450 |
≥1750 |
≥1850 |
|
|
Resistance to rapid temperature change(℃) |
600 |
800 |
800 |
|
|
Crushing strength |
150~20000 |
Depends on alumina content and specifications |
||
|
Moh's hardness (Scal) |
≥7 |
≥8 |
≥9 |
|
|
Acid resistance % |
≥95 |
≥98 |
≥98 |
|
|
Alkali resistance % |
≥85 |
≥95 |
≥98 |
|
|
Stacking weight kg/m³ |
1200~1600 |
1600~1800 |
1800~2000 |
|
Alumina content is 48%-60% Refractoriness is above 1770℃
High alumina poly light brick is a high quality lightweight refractory material.
Low creep clay bricks have a low creep rate in high temperature environments and can maintain good shape and dimensional stability for a long time.
