High Alumina Magnesia Silicon Carbide Refractory Castable
High Alumina Powder Silicon Carbide Insulating Insulation Magnesia Refractory Castable used in heat-treatment furnace is a kind of unshaped refractory made of granular and powdery material, in which add a certain amount of binder and water together. It has high mobility, is suitable for casting construction, and can be hardened without heating. Refractory castables consist of refractory aggregates, powders, binders, admixtures, water or other liquid materials. Generally in the use site, it is molded by pour, vibration or tamping method, and can be used as preforms. Refractory castables are mainly used in the metallurgical industry furnace, also in the petroleum, chemical, building materials, power and machinery industry furnace and thermal equipment.
We could offer you the best refractory castable as following:
1. High alumina castable.
2. low cement refractory castable.
3. corundum castable.
4. Self flowing refractory castable.
5. Corundum mullite castable.
6. Silicon carbide castable.
7. Zirconia Refractory Castable.
8. Lightweight insulation Refractory castable
Features and Advantages of refractory castable:
1. High refractoriness, High refractoriness under load.
2. High density, low porosity.
3. Good slag resistance and corrosion resistance.
4. High strength and wear resistance.
5. Good resistance to flake performance.
6. Good thermal shock stability.
7. Scouring resistance
8. Good hot strength.
Applications:
Mainly used to construct various heating furnace linings and other integral structures. Certain high-quality varieties can also be used in smelting furnaces. For example, aluminate cement refractory castables can be widely used in various heating furnaces and other thermal equipment without slag and acid and alkali corrosion. In the parts that are corroded by molten iron, molten steel and molten slag and have high working temperature, such as tapping trough, ladle, blast furnace body, tapping trough, etc., a combination of low calcium and pure high alumina cement can be used. Refractory castable made of high-quality granular and powdery materials with high alumina content and good sintering. For another example, phosphate refractory castables can be widely used in heating furnaces and soaking furnaces for heating metals, as well as coke ovens and cement kilns that directly contact materials. In some parts of metallurgical furnaces and other containers that are in direct contact with slag and molten metal, repairing with high-quality phosphate refractory castables also has a good effect.
| Item | LN-55 | LN-65 | LN-75 |
| Al2O3 % | ≥55 | ≥65 | ≥75 |
| Refractoriness ℃ | ≥1760 | ≥1780 | ≥1780 |
Cold bending strength
MPa | after dry 110℃ | ≥1.0 | ≥1.0 | ≥1.0 |
| after burning 1400℃X3h | ≥4.0 | ≥4.0 | ≥4.0 |
| Rate of permanent linear change of heating, % | after burning 1400℃X3h | -5~+1 | -5~+1 | -5~+1 |
| Bonding time/ min | 1~3 | 1~3 | 1~3 |
| grain size/% | ＜1.0 mm | 100 | 100 | 100 |
| ＞0.5 mm | ≤2 | ≤2 | ≤2 |
| ＜0.075 mm | ≤50 | ≤50 | ≤50 |
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High Alumina Magnesia Silicon Carbide Refractory Castable Images
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