Refractory Spray coating is an amorphous refractory prepared by mixing mullite and pyrogem as aggregate, white corundum, alumina and mullite powder as powder, adding binder in a certain proportion.
Refractory Spray coating is an amorphous refractory prepared by mixing mullite and pyrogem as aggregate, white corundum, alumina and mullite powder as powder, adding binder in a certain proportion.
Refractory Spray coating is mainly used for permanent coating of hot air pipeline.Without high-temperature sintering, the refractory gunning material can complete curing and condensation under the working conditions of 100 ℃ – 300 ℃. After curing, it forms a high fire resistance overall structure with high strength, low linear change rate, no shrinkage, no expansion, airtight and airtight.
Refractory Spray coating characteristic:
(1) Erosion resistance and erosion resistance.
(2) Good volume stability at high temperature.
(3) High overall strength.
(4) Strong air tightness.
Refractory Spray coating Index
| Item | RDP-B1.5 |
| Al2O3，%≥ | 35 |
| Refractoriness ，℃ ≥ | 1540 |
| Bulk Density ，g/cm3（110℃×24h）≤ | 1.4 |
| Cold crushing strength，MPa（110℃×24h）≥ | 15 |
| Bending Strength，MPa（110℃×24h）≥ | 3 |
| Liner Change Rate After Burn，%（1300℃×3h） | ±1.0 |
