Furnascote Nonvit

Improving Power Station Efficiency

Furnascote NONVIT can improve power station efficiency by
increasing the life of th eburner quarls and reducing down time.

Large modern burners benefit as much as older designs

Renovation of Burner Throats with Furnascote NONVIT

(courtesy, Mitsui Babcock Energy Ltd)

Preparation

Any large build up of slag will be carefully removed from the burner throats. Small areas can be left if firmly adhered and is not detrimental to the setting. If the remaining slag is glazed, it will be roughened up with an abrasive wheel to give a key. All remaining loose particles and dust will be removed.

Application

A 1mm brush coat of Furnascote Non Vit will be applied filling in any cracks or voids. Allow to dry for 30 minutes before the application of a second coat which will be applied by trowel to a finished thickness of 3mm. The second coat will be trowelled to a smooth finish.

Dry out and bake in

The finished throats will be left to air dry for 48 hours. They will then be slowly heated at 250°C / hour up to 1500°C gas temperature where it will be held for 5 hours. The heating cycle will continue with a steady temperature rise over the next 48 hours up to the maximum furnace temperature.

When coming off load the refractories should be allowed to cool naturally.

Increasing the life of Burner Quarls

The claims made in this document are made in good faith and are based on exhaustive tests carried out over a long period.
Polybond Ltd., their agents and their distributors cannot accept any liability for the behaviour of their materials in individual cases.