Product Name: High Aluminium Low Iron Insulating Bricks
Main raw material: polylight mullite insulation brick
Other raw materials: sintered at high temperature after matrix strengthening
Product features: This product is another new type of lightweight refractory product developed by our company according to market needs. It has the advantages of high temperature resistance, low thermal conductivity, low iron content, high compressive strength and good thermal stability. It is used on the insulating surface of separator and tail furnace wall.
The insulating brick is manufactured by foam quick-setting technology, with low bulk density, high compressive strength, high load softening point, small dimensional tolerance, and excellent thermal stability. It can effectively reduce the total weight of the furnace body and the thickness of the furnace wall, improve thermal efficiency, low price and energy consumption, improve working conditions and improve production efficiency.
Physical and chemical indicators of insulating fire bricks:
| Item | ZDT-0.8 | ZDT-1.0 | ZDT-1.2 | |
| Al2O3%≥ | 60 | 60 | 65 | |
| Fe2O3%≥ | 1.0 | 1.0 | 1.0 | |
| Bulk density ,g/cm3≤ | 0.8 | 1.0 | 1.2 | |
| Normal temperature compressive strength，Mpa≥ | 4.0 | 6.0 | 8.0 | |
| Reburn line changes℃×H≤2 | 1300×12 | 1300×12 | 1300×12 | |
| Thermal ConductivityW/m.K | 200℃ | 0.24 | 0.28 | 0.38 |
| 400℃ | 0.27 | 0.3 | 0.4 | |
| 800℃ | 0.32 | 0.35 | 0.44 | |
| 0.2Load softening start temperature℃≥ | 1400℃ | 1400℃ | 1400℃ |
Pictures of Insulation Bricks：
Lightweight high-alumina brick is one of the ideal insulating bricks and heat-insulating refractory materials. It has the characteristics of high compressive strength, low thermal conductivity, good thermal insulation performance and low price. Shuttle kiln, wall kiln, various heating furnaces, coke ovens and other thermal equipment, heat treatment pipelines in the iron and steel industry. As insulating fire brick suppliers, Gongyi Yuying Refractory Materials Co., Ltd. produces lightweight high-alumina bricks with high temperature, delicate materials, unique production technology and low cost.