coke oven clay brick
1. product name:clay brick 2. Applicsation: coke oven 3. Delivery: 14days after payment 4. Resources:Made in China
| Useful | Chamotte brick for coke oven | semi-silica brick | chamotte brick for Hot-Blast Stove | |||
| Mark | JNZ-35 | BGZ-65 | RN-42 | RN-40 | RN-36 | |
| Chemical Composition | W(SiO2)/% ≥ | — | 65 | — | — | — |
| W(AI2O3)/% | 32-42 | ≤30 | 42 | 40 | 36 | |
| W(Fe2O3)/% ≤ | 2 | 2 | 1.8 | 2 | 2 | |
| W(K2O+Na2O)/% ≤ | 1 | 1 | 1 | 1 | 1 | |
| Physical Index | apparent porosity % ≤ | 24 | 24 | 22(24) | 22(24) | 22(24) |
| Bulk density g/cm ≥ | 2~2.2 | 2~2.2 | 2~2.2 | 2~2.2 | 2~2.2 | |
| compression strength Mpa ≥ | 25 | 25 | 35 | 30 | 30 | |
| linear changes on reheating(1350°C×2h)% | 0.2,-0.4 | 0.2,-0.2 | –0.4~0 | –0.4~0 | –0.4~0 | |
| softening temperature (point) under load 0.2Mpa°C≥ | 1350 | 1350 | 1401 | 1350 | 1300 | |
| Refractoriness(Degree) °C ≥ | 1730 | 1750 | 1750 | 1730 | 1700 | |
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coke oven clay brick
