Ceramic Fibre
We offers a wide range of fibre blanket products in a wide range of chemistries, densities and thicknesses. Supercera Blanket (from Murugappa Morgan Thermal Ceramics Ltd) is a refractory fibre needled mat made without binder from Supercera fibres the only super-spun double needled fibre in the country today. Supercera RTZ and HTZ Blankets are zirconoca stabilized and are suitable or use upto 1260°c and 1425°c respectively. Other Insulation materials used to avoid heat loss from inside the working area Mineral wool Glass wool These are generally used in lab ovens, tray driers, kitchen equipment , packaging machinery , sound proofing, Steam pipe line areas in clothing companies , beverage, biscuit manufacturing to name a few.
Insulation Material
Insulating materials greatly reduce the heat losses through walls. Insulation is achieved by providing a layer of material with low heat conductivity between the internal hot surface of a furnace and the external surface, thus keeping the temperature of the external surface low.
Insulating materials may be classified into the following groups:
1. Insulating bricks
2. Insulating Castables
3. Ceramic fiber
4. Calcium silicate
5. Ceramic coating
Insulating materials owe their low conductivity to their pores while their heat capacity depends on the bulk density and specific heat. Air insulating materials consist of minute pores filled with air, which have a very low thermal conductivity. Excessive heat affects all insulation material
adversely, but at what temperatures this takes place varies widely. Therefore the choice of an insulating material must be based on its ability to resist heat conductivity and on the highest temperature it will withstand. One of the most widely used insulating materials is diatomite, also
known as kiesel guhr, which consists of a mass of skeletons of minute aquatic plants deposited thousands of years ago on the beds of seas and lakes. Its chemical composition is silica contaminated with clay and organic matter. A wide range of insulating refractories with wide
combinations of properties is now available.
Ceramic fiber
Ceramic fiber is a low thermal mass insulation material, which has revolutionized furnace design lining systems. Ceramic fiber is manufactured by blending and melting alumina and silica at a
temperature of 1800 – 2000 oC, and breaking the molten stream by blowing compressed air or dropping the molten stream on a spinning disc to form loose or bulk ceramic fiber. The bulk fiber is used to produce various insulation products including blankets, strips, veneering and
anchored modules, paper, vacuum formed boards and shapes, ropes, wet felt, mastic cement etc.Fibers are usually produced in two temperature grades based on Al2O3 content. A new product is
ZrO2 added alumina-silicate fiber, which helps to reduce shrinkage levels and thereby making the fiber suitable for higher temperatures. C
Ceramic fibers are generally produced in bulk wool form and needles into a blanket mass of various densities ranging from 64 to 190 kg/m3. Converted products and over 40 different forms are made from blankets to suit various requirements.
The characteristics of ceramic fibers are a remarkable combination of the properties of refractories and traditional insulation material.
Other advantages offered by ceramic fiber are:
1. Lightweight furnace
2.Simple steel fabrication work
3.Low down time
4.Increased productivity
5.Additional capacity
6.Low maintenance cost
7.Longer service life
8.Higher thermal efficiency
9.Faster response
Sai Balaaji Refractories Private Limited, Chennai 