Refractory balls for hot blast furnaces
|
Index |
High-strength high-aluminum ball |
Low creep high-aluminum ball |
|
Al2O3 % |
≥65 |
≥65 |
|
Fe2O3 % |
≤1.6 |
≤1.5 |
|
Fire resistance Refractoriness, ℃ |
≥1790 |
≥1790 |
|
Bulk densityBD ,g/cm3 |
≥2.4 |
≥2.5 |
|
Apparent porosity % |
≤24 |
≤22 |
|
Normal temperature compressive strength CCS，MPa |
≥11 |
≥13 |
|
Softening onset temperature at 0.2 MPa load RUL，℃ |
≥1480 |
≥1530 |
|
TSR ，（1100℃ water cooling）next Cycle |
≥18 |
≥20 |
|
Creep rate(0.2Mpa),% |
/ |
（1450℃×50h）≤ |
Relevant case
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