Factory:  Corner Steyr & Alfa Sts 
Aureus Industrial sites 
Email: info@keramicalia.co.za
Website: www.keramicalia.co.za
Cell: Dave  082  808 4757
Email: keraccounts@iafrica.co.za
Accounts: Myrtle Wakeford
Tel: (011) 764 2139
Tel: (011) 412 3261
P O  Box 2288
Wilro Park,1731

It is often necessary to harden the surface of ceramic fibre, particularly in areas of high gas flow velocities.

There are two different materials used. The one is sodium silicate, and can only be used at low temperatures. The other is colloidal silica, which is far superior but expensive. Keracast binder is colloidal silica based.

The greatest problem with using rigidisers is that the extent of application cannot be seen. Keracast binder contains an organic dye which makes the area and extent of application easily visible. It can therefore be applied more economically and no areas will be missed.