Four light-weight insulation bricks in refractory brick series

 
Light-weight clay brick is a kind of high-temperature insulation refractory material. It uses refractory clay clinker as raw material, plastic clay as binder, and adds appropriate amount of combustible or foaming agent. It is formed by brick press and sintered. Lightweight thermal insulation bricks are generally used in the thermal insulation layer of various high-temperature kilns as thermal insulation materials. Light clay bricks have high porosity, low bulk density, and good thermal insulation properties, and are widely used as heat insulation and filling materials in the space between refractory bricks and ketone bodies in various industrial kiln to reduce the heat of the kiln. Dissipate to obtain high energy utilization efficiency.  
High alumina poly light brick is also called high alumina heat insulation brick. Lightweight refractory with alumina content above 48%, mainly composed of mullite and glass phase or corundum. Bulk density is 0.4 ～ 1.35g / cm3. The porosity is 66% to 73%, and the compressive strength is 1 to 8MPa. Good thermal shock resistance. It is used for lining and insulation layer of masonry kiln, and for parts without strong high temperature molten material erosion and scouring effect. When the light high alumina poly light brick directly contacts the flame, the surface contact temperature should not be higher than 1350 ° C.
 
 
Mullite insulation bricks Mullite insulation bricks are high-aluminum refractory materials with mullite as the main crystal phase. We call them mullite lightweight insulation bricks. Generally, the alumina content is between 40% and 70%. Mineral composition In addition to mullite, the lower alumina content also contains a small amount of glass phase and cristobalite; mullite lightweight insulation bricks have the advantage of being exposed to flames and can be directly used in high-temperature furnace linings. Mullite lightweight insulation brick is a refractory insulation material widely used in emerging industrial furnaces and high temperature equipment.
 
 
Diatomite thermal insulation brick: using natural porous diatomite as the main raw material, adding a small amount of combined clay and combustibles, and mixing, molding, drying and firing to make bricks of different shapes. The maximum operating temperature is 900 ~ 1000 ℃, which is used as a medium temperature insulation layer. Product performance: Thermal insulation products made of porous diatomaceous earth. The main raw material is natural porous diatomite, and a small amount of combined clay and combustibles are added. Mainly used for industrial kiln and other thermal equipment, heat pipe insulation materials, generally withstand hot surface temperature of about 1000 ℃