Refractory
Coating Material |
Refracoat a special refractory coating material specially meant for protection of linings-Fire Bricks, Monolithic, Castables, Ceramic Blankets and Shells in Furnaces, Boilers and various high temperature vessels. It is Characterised by a high content of Zirconia (as 67% ZiO2) which imparts extremely high resistance to aggressive environments typically encountered at high temperature. Refracoat has a better adhesion even at low temperature than most other conventional Zirconia based coating material.
Refractory coating material
Main Application:
Protection to Refractory linings
Application
Typical Properties of Refracoat-Z
| Chemical Properties | ||
| Zirconia (ZrO2) | : | 62% min. |
| Silica (SiO2) | : | 32% |
| Physical Properties | ||
| Temperature Range | : | Upto 1900oC max. |
| Dry Density | : | 3.30 gm/cc |
| Thermal Expansion | : | 1% from 0oC to 1900oC |
| Volume Shrinkage | : | 0.25% max. |
| K Value | : | 0.43 Kcal Units @ 500oC |
| Electrical Property | : | Good Insulator after drying |
| Emissivity | : | 0.58 |
| Thermal Shocks | : | Excellent Resistance since coating becomes pyroplastic above 200oC - 250oC |
Packing : 50 Kgs. in air tight drums
Drying : - The coating must be allowed to air dry for a minimum of 12 hours.
Firing : Raise firing temperature as slowly and evenly as possible typically at 25oC per hour until 125oC is reached. Thereafter for Refracoat-Z, the furnace may be heated to its working temperature as usual.
Industries covered
Aluminium
Brass and other non ferrous
Ceramic and Potteries
Chemicals and Fertilizers
Cement
Iron and Steel
Refineries and Petrochemicals
Boilers & Furnaces.