Refractory hardener KAOWOOL / SUPERWOOL

Price: on request

Kaowool and Superwool hardeners are inorganic liquid hardening agents which, when applied to Blanket, Modules or Board, produces a hard surface finish with increased resistance to mechanical abrasion and to gas flowersion. Blanket, Modules and Board can be treated to produce depths of hardening varying from a thin eggshell surface to total penetration, the latter resulting in a rigidised material. During storage the Hardener temperature should not fall below +2 ⁰C. The product has a shelf life of app roximately 12 months.

Applications procedure:
Refractory hardener is normally used diluted 50-50 with water and can be applied by brushing, spraying, or dipping. Spray operation should be carried out under well ventilated conditions, taking care to avoid breathing in the spray. The amount needed varies with the type of application, and is dependent on variables such as Blanket density and the depth of treatment required. As a surface coating, 2.5 litres of diluted Hardener will cover 1m², and 17 litre swill saturate the same area of 25mm 128kg/m³ Blanket. Drying procedure is not critical but 12 hours at 90 ⁰C is fairly typical. Natural drying is feasible but, in the case ofthrough - hardened Blanket or Board, migration of Hardener to the material surface may occur.

Applications:
Where enhanced resistance to erosion by high velocity gases is required, such as occur around burner block assemblies, Blanket Modules or Board can be hardened after installation. A final hardening spray is often given to the Blanket hotface linings of furnaces, ductwork, etc. where gas flow is significant, or when it is desired to impart some resistance to mechanical damage. Surface hardening is also recommended for applications involving contact with molten non-ferrous metal, e.g. launder linings.

Availability:
• Kaowool Hardener is supplied in 5 litre and 200 litre containers;
• Superwool Hardener is supplied in 5 litre containers.