The appropriative refractory castable for coal-injection duct is based on the characteristics of materials such as andalusite, corundum-mullite, composite material, and differential combination of activated aluminum powder.
The appropriative refractory castable for coal-injection duct is based on the characteristics of materials such as andalusite, corundum-mullite, composite material, and differential combination of activated aluminum powder. Appropriative heat resistant castable for coal-injection duct has the characteristics of good thermal shock stability, high corrosion resistance, stable volume, no cracking and no peeling.
|
Items |
CH-PJZ68 |
CH-PJZ72 |
CH-PJZ78 |
|
|
AL2O3 /% ≧ |
68 |
72 |
78 |
|
|
Bulk density (110℃×24h) g/cm3 ≥ |
2.6 |
2.7 |
2.8 |
|
|
Flexural strength/ MPa ≥
|
110℃×24h |
8 |
9 |
9 |
|
1400℃×3h |
11 |
12 |
12 |
|
|
Compressive strength/ MPa ≥
|
110℃×24h |
60 |
70 |
80 |
|
1400℃×3h |
70 |
80 |
90 |
|
|
Permanent Linear Change /% (1100℃×3h) ≤ |
±0.5 |
±0.5 |
±0.5 |
|
Electro-fused AZS hot refractroy repair material uses fused cast corundum refractory as raw material, adding α-alumina micro-powder to the furnish, adopting new generation ceramic binder, adding special component ultrafine powder and introducing dispersing medium, modified adding phase and chemical adding phase.
Electro-fused AZS refractory ramming mass is monolithic refractories and electro-fused AZS refractory ramming mix is composed of molten corundum aggregate particles and a small amount of additives.
Using high quality magnesia as the main materials, by adding compound binding additives, this series of gunning mixes for EAF feature high adhesive strength, low rebound rate, good sintering, good erosion resistance, and can be used as cold or hot repair materials at slag line and side wall.
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