Refractory spray coating is a kind of amorphous refractory material, which is applied to the lining of thermal equipment by spraying construction method.
The main components of refractory spray coating generally include high-alumina bauxite, corundum, mullite, etc. Its particle size distribution will affect the bulk density and construction performance of the spray coating. Usually, there are coarse, medium and fine particles with different particle sizes, so that the aggregates form a dense stacking structure.
(1) Convenient construction
(2) Good adaptability
(3) Excellent fire resistance
(4) Good mechanical properties
Metallurgical industry, building materials industry, chemical industry, power industry
|
Item |
Light paint spraying |
Acid paint spraying |
||
|
RJP-1.2 |
RJP-1.5 |
NSP |
||
|
(AL2O3)/% |
≥35 |
≥40 |
≥35 |
|
|
（CaO）/% |
- |
- |
≤0.5 |
|
|
Body density（g/cm3） |
110°×24H |
≤1.2 |
≤1.5 |
≥1.8 |
|
Cold bending strength /MPa |
110°×24H |
≥1.0 |
≥2.0 |
≥3.0 |
|
- |
- |
2.0 |
||
|
3H |
2.0(1000℃) |
3.0（1000℃） |
4.0（1000℃） |
|
|
Heating line changes /% 110°×24H |
- |
- |
±0.5 |
|
|
Thermal conductivity（350℃）/（W/(m·k)）≤ |
0.3 |
0.4 |
- |
|
|
Recommended parts |
Hot air pipe insulation layer |
Hot blast stove ball top |
||
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