Unshaped refractories for preheater, cooler, smoke chamber, transfer chute, kiln cover, etc。
(2-3% heat resistant steel fiber can be added to the castables according to the use environment and temperature)。
Physical and chemical index
Physical and chemical index | |||||||
---|---|---|---|---|---|---|---|
Item Brand Number | GH-D70 | GH-D65 | GH-D60 | GH-D50 | GH-DN40 | GH-DN30 | |
Al2O3 %≥ | 70 | 65 | 60 | 50 | 40 | 30 | |
Bulk densit (g/cm³) | 2.70 | 2.60 | 2.50 | 2.40 | 2.20 | 2.00 | |
Compressive strength:(MPa)≥ | 110℃ x24h | 80 | 60 | 50 | 50 | 40 | 40 |
1100℃x3h | 90 | 70 | 70 | 60 | 60 | 50 | |
Flexural strength: (MPa)≥ | 110℃x24h | 10 | 8 | 8 | 6 | 6 | 6 |
1100℃x3h | 14 | 12 | 10 | 8 | 8 | (850℃x3h) | |
Line Change Rate:(1300℃x3h)% | ±0.3 | ±0.5 | ±0.5 | (1100℃x3h) ±0.5 | (1100℃x3h) | (850℃x3h) |