High Strength Alkali Proof Castable For Industrial Kilns
♦ Refractory Castable Introduction:
High Strength Alkali Proof Castable has strong erosion resistance capacity against the alkali gas and clinker and its service life is long. This product is mainly used in linings of kiln hood, decomposing furnace, preheater system, pipeline system and other industrial kiln.
♦ Refractory Castable Application:
Used in furnaces and kilns for many industries as chemical, metallurgy
Classifications
Alkali proof refractory castable can be classified into light and heave. The former means its porosity is greater than 45%, while that of the latter is less than 45%.
While the heavy alkali resistance refractory castable uses calcined bauxites and chamotte as the aggregates binder and alkali resistant powder are the same with that of the light alkali resistant castable.
Light alkali proof refractory castable is mainly used in the preheater roof, kiln shell, and the alkali erosion area of kiln as the alkali resistant and heat insulation linings. Heavy alkali resistant refractory castable are mainly used in the rotary kiln for the calcined alumina, and the head, end, preheater, discharge hole and tuyere of the cement rotary kiln.
Light Alkali Proof Castable
- Porosity: more than 45%
- Chemical components： Al2O3 30% ~ 55%， SiO2 25% ~ 45%
- Applications: preheater roof, kiln shell, and the alkali erosion area of kiln, etc.
High Strength Alkali Proof Castable
- Porosity:less than 45%
- Chemical components: Al2O3 35% ~ 60%, SiO2 35% ~ 60%
- Applications: rotary kiln for the calcined alumina, and the head, end, preheater, discharge hole and tuyere of the cement rotary kiln.
Classifications
Alkali proof refractory castable can be classified into light and heave. The former means its porosity is greater than 45%, while that of the latter is less than 45%.
While the heavy alkali resistance refractory castable uses calcined bauxites and chamotte as the aggregates binder and alkali resistant powder are the same with that of the light alkali resistant castable.
Light alkali proof refractory castable is mainly used in the preheater roof, kiln shell, and the alkali erosion area of kiln as the alkali resistant and heat insulation linings. Heavy alkali resistant refractory castable are mainly used in the rotary kiln for the calcined alumina, and the head, end, preheater, discharge hole and tuyere of the cement rotary kiln.
Refractory Castable Physical andChemical Indicators：
| Items | High Strength Alkali Proof Castable | ||
| YH-13NL | YH-14N | ||
| Chemical Composition % | Al2O3 | 48 | 45 |
| Bulk Density g/cm 3 | 110°Cx24h | 2.2-2.4 | 2.2-24 |
| MOR MPa | 110°Cx24h | 7 | 8 |
| 1110°Cx3h | 7 | 8 | |
| Cold Crushing Strength MPa | 110°Cx24h | 70 | 80 |
| 1110°Cx3h | 70 | 80 | |
| Linear Dimensional Change% | 1110°Cx3h | ±0.4 | ±0.4 |
| Maximum Service Temperature °C | 1300 | 1400 | |
