The high-strength wear-resistant self-flowing castables are made of high-quality bauxite clinker, mullite and fused corundum. The pure calcium aluminate cement, corundum micro-powder and silicon micro-powder are used as binders.
The high-strength wear-resistant self-flowing castables are made of high-quality bauxite clinker, mullite and fused corundum. The pure calcium aluminate cement, corundum micro-powder and silicon micro-powder are used as binders. It has the characteristics of high strength, good thermal shock resistance, abrasion resistance, erosion resistance and strong corrosion resistance. It has good fluidity and convenient construction. It can be used in CFB boilers and other high temperature furnaces.
|
Items |
CH-ZLJZ75 |
CH-ZLJZ80 |
|
|
AL2O3/% ≥ |
75 |
80 |
|
|
SiO2/% ≤ |
20 |
16 |
|
|
Bulk density g/cm3 ≥ |
2.6 |
2.7 |
|
|
Flexural strength/MPa ≥
|
110℃×24h |
7.0 |
8.0 |
|
1100℃×3h |
11 |
12 |
|
|
Compressive strength/ MPa ≥
|
110℃×24h |
60 |
70 |
|
1100℃×3h |
70 |
85 |
|
|
Normal temperature wear /cm3 ≤ |
8 |
9 |
|
|
Refractoriness /℃ ≥ |
1790 |
1790 |
|
|
Thermal shock stability TSR (900℃ ,water-cooling) time≥ |
20 |
20 |
|
|
PLC % （1000℃×3h） ≤ |
-0.25 |
-0.25 |
|
|
The self flow value /mm ≥ |
200 |
200 |
|
The alkali-resistant firebricks use silica, coke stones and appropriate additives to improve the microstructure of the product.
The appropriative refractory castable for tertiary air duct has the characteristics of high strength, good wear resistance, erosion resistance, erosion resistance and no cracking.
Corundum mullite firebrick uses corundum and mullite as aggregate and fine powder, adding appropriate additives. Corundum mullite fireproof brick is formed by high-pressure and sintered at medium-temperature through reasonable process ratio.
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