The wear-resistant refractory plastic material is made of high-alumina bauxite clinker, corundum and silicon carbide and other wear-resistant materials, combined with powder or liquid binder, and mixed with some additives. It has excellent wear resistance at high temperature. Plastic.
Wear-resistant refractory plastics are classified into NMK-Ⅰ and NMK-Ⅱ according to their physical and chemical properties. N, M, and K respectively represent resistance, grinding, and three Chinese characters.
|
Product name |
Corundum (silicon carbide) wear-resistant refractory plastic |
|
Index |
MNK-Ⅰ |
NMK-Ⅱ |
|
Bulk density（110℃±5℃X24h） |
Kg/m |
≥2700 |
≥2600 |
|
Normal temperature compressive strength |
（110℃±5℃X24h） |
≥30 |
≥50 |
|
MPa |
800℃X3h |
≥80 |
≥70 |
|
Normal temperature flexural strength |
（110℃±5℃）X24h |
≥10 |
≥9 |
|
SPa |
800℃X3h |
≥15 |
≥12 |
|
Thermal shock stability（900℃，Water cooling） |
Times |
≥20 |
≥20 |
|
The rate of change after burning, the temperature of the test is not more than ±1% of the test temperature for 3 hours |
℃ |
1300 |
1300 |
|
Wear resistance（900℃X6h） |
cm3 |
≤8 |
≤9 |
|
Plasticity index |
% |
15～40 |
15～40 |
|
Refractoriness |
℃ |
≥1770 |
≥1770 |
|
Al2O3 |
% |
≥70 |
≥50 |
|
SiC |
% |
— |
≥30 |
It is suitable for the cyclone cylinder of circulating fluidized bed boiler, the lining of furnace wall and the part with severe impact and wear of coal ash. The wear-resistant refractory plastic material is made of high-alumina bauxite clin
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