These are general-purpose firebricks made from selected grades of
calcined fire clay and fired to suit the customers application.
Superduty bricks are made from a
combination of superior grades of calcined clays and calcined kaoline. Brands such as MCL
42SD and MCLS are very pure, low porosity bricks with exceptional hot strength suggested
for glass regenerator and iron making applications.
This is by far the most versatile range
of high alumina refractory shapes in Maithans portfolio. Extra pure dense grades
with very high mullite content are ideal solutions for glass plant, Blast furnace Stove
and stack and other demanding applications where as MCL SILL is the economical low iron
alternative for applications upto 1700°C.
Bauxite Based Bricks:
Manufactured from calcined
indigenous/imported bauxite, these bricks are the most economical solution in their
alumina class. Especially noteworthy are the 70% and 80% class which proven their mettle
in steel ladles and cement rotary kilns.
In the 70-90% alumina class, dense
products for application such as lime calcination, aluminum melting furnace, sponge iron
rotary kilns and re-heating furnace bottoms are manufactured with a blend of brown and
white alumina synthetic grains. These products are distinguished by their excellent
abrasion resistance, high cold and hot strength and volume stability.
Initially developed for Maithans
1800°c tunnel kiln, MCL COR99 has given trouble free service in firing temperatures above
1750°c. With further refinements, this product is now offered for secondary reformers,
carbon black and ceramic industries.
Zircon and Zircon-mullite
High purity zircon, fused AZS grains and
stabilized Zirconia are among the inputs for a range of high performance Zircon (upto 67%
ZrO2 content) and Zircon Mullite refractories. The entire range of bonded ZrO2 containing
refractories have been indigenously developed and are distinguished by their excellent
alkali resistance in regenerator and melter applications in glass plants. Blocks and tiles
can also be supplied in these qualities.
Alumina SiC - Carbon Bricks:
Designed and indigenously developed by
Maithan, this class of refractories is an integral part of Maithans ladle management solution. These are ideally
suitable for wear zones in steel ladles such as impact pads, metal zone (bottom rings)
Using high purity SiC grains, Maithan
manufactures SiC refractory fired in reducing atmospheres. Due to its high conductivity,
corrosion and spalling resistance it is preferred for versatile applications such as kiln
furniture in ceramic industries, reduction cells for aluminium melting
and coal fired boilers and Ferroalloys Industry.
Alumina chrome bricks have been developed for extreme
applications such as LRF metal zones, waste incineration, copper and zinc manufacture.
Based on such inputs as fused alumina and chromic oxide, these products display very high
resistance to molten metal, slag and fluxes.