Description
Light weight fireclay brick, also known as fireclay insulating brick, is a type of lightweight refractory material made from refractory clay with an alumina content of 30% to 46%. The characteristics of these bricks include low density, low thermal conductivity, high refractoriness and good thermal insulation performance, making them primarily used in the areas that need heat insulation in various kilns.
Specification
| Item | Grade | ||||||
| NG140-1.5 | NG135-1.3 | NG135-1.2 | NG130-1.0 | NG125-0.8 | NG120-0.6 | NG115-0.5 | |
| Bulk Density/(g/cm³) | ≤1.5 | ≤1.3 | ≤1.2 | ≤1.0 | ≤0.8 | ≤0.6 | ≤0.5 |
| CCS / MPa | ≥6.0 | ≥5.0 | ≥4.5 | ≥3.5 | ≥2.5 | ≥1.3 | ≥1.0 |
| 5.5 | 4.5 | 4.0 | 3.0 | 2.0 | 1.0 | 0.8 | |
| HPLC / % | 1400 ℃× 12 h | 1350 ℃×12 h | 1300 ℃× 12 h | 1250 ℃× 12 h | 1200 ℃× 12 h | 1150 ℃× 12 h | |
| Xmin~Xmax: -2 ~ 1 | |||||||
| λ [W/m·k](350±25℃) | ≤0.65 | ≤0.55 | ≤0.50 | ≤0.40 | ≤0.35 | ≤0.25 | ≤0.23 |
Applications
Mainly used for heat insulation inside various industrial furnaces, such as blast furnaces, hot blast stoves, carbon roasting furnaces, carbon calcining furnaces, coke ovens, boilers, lime kilns, cement kilns and glass furnaces,etc.
