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Atmospheric and vacuum equipment
Products required for atmospheric and vacuum equipment: lightweight mullite brick series products and supporting mortar, lightweight castable series products.
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SQM series of lightweight heat-insulating castables
SQM series technical performance indicators
|
performance Grade |
Bulk density Kg/m3 |
Compressive strength MPa |
Flexural strength MPa |
Linear change rate % |
Thermal Conductivity w/m。k |
|
|
110℃ |
110℃ |
815℃ |
110℃ |
815℃ |
350℃ |
|
|
SQM-1300 |
≤1300 |
≥6 |
≥5 |
≥2 |
≤0.3 |
≤0.35 |
|
SQM-1200 |
≤1200 |
≥5 |
≥4.5 |
≥1.5 |
≤0.4 |
≤0.3 |
|
SQM-1000 |
≤1000 |
≥4 |
≥3.5 |
≥1.3 |
≤0.45 |
≤0.25 |
|
SQM-900 |
≤900 |
≥3 |
≥2.5 |
≥1.0 |
≤0.5 |
≤0.23 |
|
SQM-800 |
≤800 |
≥6 |
≥2.1 |
≥0.8 |
≤0.5 |
≤0.21 |
|
SQM-700 |
≤700 |
≥6 |
≥1.8 |
≥0.7 |
≤0.55 |
≤0.17 |
|
SQM-500 |
≤500 |
≥6 |
≥1.2 |
≥0.6 |
≤0.6 |
≤0.15 |
High temperature mullite insulation brick
Physical and chemical indexes of high temperature mullite insulation brick
| project | Grade | |||
|
KDM-23 |
KDM-26 |
KDM-28 |
||
|
Refractoriness℃ |
1260 |
1430 |
1540 |
|
|
Bulk density Kg/m3 |
780 |
780 |
880 |
|
|
Compressive strength at room temperature Mpa |
≥1.3 |
≥1.6 |
≥2.1 |
|
| 1500℃×8h reburning line change% |
≤1.0 |
≤1.0 |
≤1.0 |
|
|
Thermal Conductivity w/m.k |
600℃ |
0.16 |
|
0.38 |
|
800℃ |
0.18 |
0.31 |
0.40 |
|
|
chemical composition % |
Al2O3 |
≥37.0 |
≥58.0 |
≥62.0 |
|
Fe2O3 |
≤1.2 |
≤1.0 |
≤0.8 |
|
| Thermal shock stability (900℃~air cooling) times |
|
|
≥20 |
|
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