Description of Checker Brick:
The checker brick is a kind of heat-exchange capacity, large heat storage area, smooth ventilation, low resistance and other heat-carrying heat storage body, with good volume stability, high temperature creep performance, high density and low porosity and other excellent characteristics. According to the structure, there are 7, 9, 19, 31 and 37-hole high-efficiency checker bricks, and the materials are silica, clay, high alumina, etc.
Technique Data of Checker Brick:
Item | Specification | |||
GZ | DRN120 | DRL127 | DRL145 | |
Al2O3 % | ≤1.0 | ≥42 | ≥50 | ≥65 |
SiO2 % | ≥95 | / | / | / |
Fe2O3 % | ≤1.2 | ≤1.8 | / | / |
Apparent Porosity % | ≤24 | ≤22 | ≤25 | ≤23 |
Bulk Density g/cm3 | ≤2.34(真密度) | 2.1~2.3 | 2.3~2.5 | 2.5~2.7 |
CCS, MPa | ≥30 | ≥25 | ≥40 | ≥50 |
0.2MPa Creep Rate % 0~50h | ≤0.8 1500℃ | ≤0.8 1200℃ | ≤0.8 1270℃ | ≤0.8 1450℃ |
Thermal Expansion Rate % 1000℃ | ≤1.26 | / | / | / |
PLC % | / | 1350℃×2h -0.4~0.1 | 1450℃×2h -0.3~+0.2 | 1500℃×2h ±0.2 |
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