Customized Sizes Diameters Alumina Refractory Balls High Alumina Balls Zhengzhou
Customized Sizes Diameters Alumina Refractory Balls High Alumina Balls Zhengzhou
The main materials of refractory ball are industrial alumina and fire-proof kaolin, it is made by scientific formula, molding and high temperature calcination. Its maximum refractoriness can reach 1900℃. It is of high mechanical strength, long service life, good chemical stability, high temperature resistance, etc
Physical and Chemical Index:
| Description |
High Alumina |
Modified High Alumina | High Alumina and Density | High Density and Low Creep |
| Al2O3 | 55 | 65-75 | 70 | 70-80 |
| Fe2O3 | 2.0 | 1.8 | 1.8 | 1.8 |
| Refractoriness ℃ | 1750 | 1770 | 1790 | 1790 |
| Apparent Porosity (%) | 26 | 25 | 24 | 20 |
| Bulk & Density ≥g/cm3 | 2.35 | 2.35 | 2.6 | 2.75 |
| Cold Crushing Strength | 10 | 11 | 12 | 13 |
| Softening Temperature with Load | 1420 | 1450 | 1480 | 1520 |
Refractory balls include ordinary refractory ball and high alumina refractory ball. The ordinary refractory ball is suitable for converter and shift converter of sulfuric acid and fertilizer industry. High alumina refractory ball is suitable for the hot-blast furnace, heating shift converter and other equipment of urea and steel industry.
Different refractory balls are acceptable:
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