Brief Description
Plastic Refractory,is a kind of monolithic refractory, consisting of 70% to 80% granular and powdery materials and 10% to 25% plastic clay and some amount of plasticizers.
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.
Technical Data
The price of plastic refractory varies depending on the brand, specification and application. The following are Rongsheng’s reference specifications, and our products support customization!
| 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(1120℃, 5h) | |
| Refractoriness ℃ | ≥1730℃ |
| Thermal shock resistance/ times (900℃, water cooling) | ≥25 |
| Thermal conductivity (w/m·K) | 1.72（350℃） |
| Abrasion resistance | ≤6 |
Application
Plastic refractory materials are mainly used in various heating furnaces that are not in direct contact with the molten material, like heating furnaces, soaking furnaces, annealing furnaces, hot air furnaces, etc.
It is also suitable for the furnace cover of small electric arc furnaces, the burner of high-temperature furnaces, etc., because it has good thermal shock resistance and easy construction.