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Fibrecoat - Seals & Protects Refractory Ceramic Fibre. Zircon-Based

NEW from the laboratories, Fibrecoat has been specially developed to enhance the performance of Refractory Ceramic Fibre (RCF) in all applications, whilst at the same time solving many problems associated with the reclassification of RCF as a Class 2 Carcinogen.

  

Fibrecoat is a zircon based refractory composition specially developed for use as a surface coating and binding agent for ceramic fibre and other fibrous refractory insulation materials.

Fibrecoat will enhance the performance of Refractory Ceramic Fibre (RCF) in all applications, whilst at the same time solving many problems associated with reclassfication of RCF as a Class 2 Carcinogen.

By binding the surface fibres and forming a thin skin over the ceramic fibre linings, Fibrecoat strengthens the surface of an otherwise weak material greatly improving its resistance to erosion in areas subject to high gas velocities, flames, splashes from molten metals and many industrial chemical processes.

The ceramic fibre is rendered harmless under normal conditions of use and is also able to serve closer to its general classification temperature. Improved insulation is also achieved as the layer of Fibrecoat stops the passage of hot gases into the fibre lining reducing heat loss from energy radiated into the fibre.

Fibrecoat is supplied as a dry powder which is mixed with cold water to form a slurry. A typical application will use a 1 - 3mm spray applied coating to encapsulate and seal the ceramic fibre with these resulting benefits:

Fibrecoat is used in the following industries:-

MAIN BENEFITS OF FIBRECOAT

APPLICATION NOTES

Fibrecoat should only be applied to clean, sound surfaces. Any loose material, powders or contamination should be removed.

Fibrecoat should not be applied to RCF which has been treated with silica-sol rigidisers, neither will it adhere properly to modules containing processing oils. Any mineral oil should be burnt off prior to application of Fibrecoat.

The product is designed for spray application using textured paint or cement spraying equipment. It may also be brushed onto hard surfaces.

A coating of approximately 1.5mm will provide economical protection to most ceramic fibre linings. A gas tight coating is attained at >2.5mm. Several thin coatings each allowed to dry out are the best way of achieving thick coatings (>3mm).

MIXING

Mix 25kg of Fibrecoat briskly for two minutes with 4 litres of clean, cold water using a mechanical stirrer. Allow to stand after mixing for about 40 minutes ( or longer if schedules allow) then re-mix (mechanically) for a further three minutes adding more water at this stage for any final adjustments to viscosity bearing in mind the final application method.

PRE-WETTING

For the strongest coating on blanket, spray the fibre surface with cold water to a depth of 5 - 10 mm and then compact the wetted surface before applying Fibrecoat.

DRYING

Allow the coating to dry out completely before firing.

COVERAGE

1 mm of dried Fibrecoat over 1 square metre weighs 3 kg.

PACK SIZES

Fibrecoat is supplied as a dry powder in 25kg plastic tubs.

SHELF LIFE

Indefinite if stored as a powder in airtight containers as supplied. Approximately 12 months after mixing with water.

GENERAL PROPERTIES

Fibrecoat is odourless, tasteless and non-toxic.

Form:
Dry powder, density = 3.30
Bulk factor = 2.10

CHEMICAL RESISTANCE

After firing, Fibrecoat is unaffected by most acids and alkalis in liquid or gaseous form.

PHYSICAL PROPERTIES

Thermal expansion is approxiamately 1 % over the range 0 C - 1500 C.

Shrinkage is less than 0.30%

Emissity Value = 0.58

K Value = 3.05 at 500°C

Resistance to powdering is excellent.

CHEMICAL ANALYSIS

(Mainly as oxides) - %
Zirconium 62.50
Aluminium 1.65
Calcium 1.40
Sodium 4.03
Magnesium 0.34
Silicon 28.48
Titanium 0.25
Boron .-v 1.10
Fluorine ( as fluoride) 0.25

HEALTH & SAFETY

Avoid inhalation of dust. Wear dust mask, gloves and goggles whilst mixing and applying Fibrecoat


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