Wearing proof refractory castable:
1.strong wearing proof property
2.good erosion resistance
3.good volume stability
1.strong wearing proof property
2.good erosion resistance
3.good volume stability
Wearing proof refractory castable used for CFB boiler:
Wearing proof refractory castable has the advantage of high strength under high temperature,strong and good wearing proof performance,excellent erosion resistance and good volume stability @ high temperature.It can be used as wearing proof lining of kinds of CFB boiler,this products effectively extend the service life and overhaul period of CFB boiler.
Analysis Data of wearing proof refractory castable
| Items | GC-1 | GC-2 | GBG-1 | GBG-2 |
| Al2O3,% ≥ | 70 | 75 | 80 | 85 |
| SiO2,% ≤ | 26 | 21 | 16 | 11 |
| Bulke density,g/cm3 ≥ | 2.7 | 2.8 | 2.85 | 2.9 |
| Compressive strength,Mpa @110°c*24h ≥ | 60 | 65 | 70 | 75 |
| Compressive strength,Mpa @1100°c*3h ≥ | 90 | 95 | 100 | 105 |
| Compressive strength,Mpa @1400°c*3h ≥ | 90 | 100 | 105 | 110 |
| Modulus of rupture,Mpa @110°c*24h ≥ | 8.5 | 9.3 | 10 | 11.5 |
| Modulus of rupture,Mpa @1100°c*3h ≥ | 11.5 | 12.5 | 13.5 | 15 |
| Modulus of rupture,Mpa @1400°c*3h ≥ | 13 | 13.5 | 15 | 16 |
| Cold wearing capacity,cm3 ≤ | 7.5 | 7 | 6 | 5 |
| 0.2Mpa refractoriness under load,°c ≥ | 1450 | 1490 | 1530 | 1560 |
| Thermal shock resistance(900°c,water cooling),times ≥ | 25 | 20 | 25 | 20 |
| Maximum service temperature,°c | 1600 | 1550 | 1550 | 1600 |
| Reheating linear change,% ≤ | -0.3 | -0.3 | -0.2 | -0.2 |
Application:
•GC-1 is mainly used for ignition system and low wearing region of CFB boiler
•GC-2 is mainly used for wearing region of CFB boiler under 130t/h
•GBG-1 is maily used for wearing region of CFB boiler overtop 220t/h
•GBG-2 is widely used for severe wearing region of kinds of CFB boiler