Refractory Coating Material
Top

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