Plastic Refractory
1.Good Plasticity
2.Good Slag Resistance
3.Good Corrosion Resistance
4.High Strength And High Density
Product Description
Description of Plastic Refractory:
Plastic refractory has fairly good plasticity and is suitable for casting construction. Mouldable plastic refractory is produced by mixing quantitative refractory aggregate, power, fireclay, binder and other additive and squeezed to brick green body shape. Plastic refractory still has good plasticity when properly packed and stocked for certain time. According to different kinds of aggregate, plastic refractory can be classified into high alumina plastic refractory, fireclay based, corundum, silica, magnesia, chromite, zirconia, carborundum plastic refractory, etc. Plastic moldable refractory is a great solution when refractory castable and bricks are too complicated or cumbersome and formwork is unavailable. Plastic refractory possesses excellent strength and high density, as well as abrasion, slag and spall resistance, can be used in a wide range of applications. Ramming plastic refractory is also resistant to molten metals, which makes it perfect for applications such as boiler work, forge furnaces, tundish linings, ladle linings, burner blocks and patches.
Physiochemical Indexes of Plastic Refractory:
Corundum Refractory Plastic:
| Item | Index | |
| Al2O3 % | 85 | |
| Corundum refractory plastic ℃ | 1790 | |
| Bulk density g/cm³ | 2.8 | |
| Cold Crushing Strength MPa | 110℃×24h | ≥70 |
| 815℃×3h | ≥95 | |
| Modules Of Rupture MPa | 110℃×24h | ≥14 |
| 815℃×3h | ≥16 | |
| Thermal Shock Resistance（900℃ water quenching,cucle） | ≥30 | |
| Plasticity Index ％ | 20-40 | |
| Normal Temperature of Wear-resisting | ≤6 | |
Corundum Wear-resistant Plastic:
| Item | GS—70 | GS—75 | GS—80 | GS—85 | |
| Chemical composition（%） | Al2O3≥ | 70 | 75 | 80 | 85 |
| Cold crushing strength（MPa） | 110℃×24h | 10 | 12 | 15 | 15 |
| 600℃×3h | 16 | 20 | 20 | 22 | |
| 1350℃×3h | 25 | 25 | 26 | 28 | |
| Refractoriness under load（℃） | -0.2% | 1380 | 1400 | 1450 | 1500 |
| -0.4% | 1500 | 1550 | 1550 | 1580 | |
| Linear changing after burnt（%） | 1350℃×3h | ±2 | ±2 | ±1.5 | ±1.5 |
| Bulk density（g./cm3） | 1350℃×3h | 2.6 | 2.65 | 2.7 | 2.8 |
| Refractoriness（℃） ≥ | 1700 | 1750 | 1790 | 1790 | |
| Amount for construction（kg/m3） | 2800 | 2850 | 2900 | 3000 | |
High-strength Wear-resistant Refractory Plastic:
| Item | Index |
| SiO2 % | 60 |
| Bulk density g/cm³ | 2.6 |
| Cold Crushing Strength MPa 815℃×3h | ≥60 |
| PLC（850℃×3h）% | ≥0.6/0 |
| Thermal Shock Resistance（850℃×3h）cycle | ≥40 |
| Plasticity Index ％ | 15-40 |
Slightly Expanded Refractory Plastic:
| Item | Slightly Expanded Refractory Plastic | Slightly Expanded Wear Plastic | |||
| Bulk Density g/cm³ ≥ | 2.2 | 2.4 | 2.6 | 2.8 | |
| Refractoriness ℃ ≥ | 1650 | 1700 | 1750 | 1790 | |
| Plasticity Index ％ | 40-60 | 40-60 | 16-36 | 16-30 | |
| Al2O3 ％ ≥ | -- | 40 | 60 | 83 | |
| SiO2 ％ ≥ | 68 | 35 | 25 | -- | |
| SiC ％ ≥ | 8-10 | 8-10 | 8-10 | 8-10 | |
| Refractoiness Under Load | 0.6%≥ | 900 | 900 | 950 | 1000 |
| 4%≥ | 1000 | 1000 | 1050 | 1100 | |
| 850℃×3h Strength after burning MPa≥ |
耐压 | 60 | 70 | 80 | 90 |
| 抗折 | 15 | 16 | 18 | 20 | |
| Permanent Liner Change（1400℃×3h）％ | +2~+3.5 | +0.8~+1.0 | +0.5~+1.0 | +0.5~+0.8 | |
Acid And Wear Resistant Plastic:
| Item | Index |
| Bulk Density g/cm3 | ≥2.8（110℃,24h） |
| Crushing strength Mpa | ≥80(110℃, 24h) |
| ≥90(1100℃, 5h) | |
| Modulus of rupture Mpa | ≥14(110℃, 24h) |
| ≥18(1000℃, 3h) | |
| Refractoriness ℃ | ≥1730 |
| Thermal shock resistance/ times (900℃, water cooling) | ≥25 |
| Thermal conductivity (w/m·K) | 1.72（350℃） |
| Abrasion resistance | ≤6 |
