+30 23940 25290 info@roka-refractory.com
Insulating Firebricks JM

Insulating Firebricks are whitish in color and light weight. They are made of mullite, a product of aluminum and silicate after exposure of refractory clay in high temperature. Depending on the density and the refractoriness they are classified as JM23, JM26, JM28, JM30, JM32.

Insulating fire bricks (IFBs) are porous light weight firebricks that endure in continuous use temperatures as the maximum continuous use temperature depends on the application. JM’s are mostly used in refractories industries and home appliance industry as well. They are insulating fire bricks that resist in extreme temperatures ideal for the insulation of kilns, doors, pizza ovens etc.

They can be easily cut by handheld hack saw or other hand tools like chisel. Insulating firebricks have high porous rate and have excellent insulating properties,

Each type is formulated to meet specific thermal and physical requirements and after firing, each type is machined to precise tolerances. Made from high purity refractory clays and other ceramic raw materials, these Insulating firebricks contain carefully graded organic filler, which is burned out during production to give a uniform controlled pore structure.

The lightweight and high insulating value of our IFB’s improves efficiency and lower operating costs. Next to the delivery of standard sizes, Roka Refractories has a specific department in cuttings by which we can provide you in boxes the exact dimensions of your requirements.

✅Low thermal conductivity.
✅Excellent resistance to heat shock.
✅Low heat storage capacity.
✅Light weight and low thermal conductivity reduce heat absorption, producing significant energy.
✅High cold strength and to good refractoriness under load in operating conditions.
✅ Easy handling, easy cutting.
✅ Can be machined into special shapes without the need for multiple sections and joints.

Indicative applications as hot face refractory lining or as back-up insulation in:
✔️Home appliance industry:
In firebrick ovens, stoves, fireplaces for better insulation, less losses so that with less wood and charcoal you have a more suitable temperature.

✔️Stoves and Fireplace industry:
It can be placed behind the firebrick in the combustion chamber and maintain high temperatures without losses. In combination with the firebricks that are thermoaccumulative gives more kw of combustion temperature with less wood / pellets / coals.

✔️Industrial ovens:
It is installed in the internal combustion chamber in metallurgy, power generation, cement production, petrochemical industry, glass industry, food incineration kilns, roller kilns, car tops and frames, ceramic industry, and any use of furnace mainly where it is a key solution since it withstands extreme temperatures and maintains its internal temperature and protects from high temperatures around the furnace.

✔️ Aluminium Industry:
Anode bake furnaces, primary electrolytic cells and secondary remelt furnaces.