Kiln Building Refractory Bricks and Insulating Firebrick for Furnace Building and Repair

Insulating Fire Brick,There are two main types of high temperature fire brick: Soft brick ,Insulating Fire Brick and Hard or Dense Fire Brick.

Both types are made of refractory fire clay, alumina to make it more refractory (resistant to heat), and grog which is ground up, pre-fired clay. Grog helps limit the expansion and contraction that fire bricks go though in heating a cooling cycles.

Dense FireBrickDense fire bricks are very heavy at about 3.7 kilograms each. Dense firebrick resists abrasion and chemical atmospheres so these are used in wood burning kilns and furnaces, salt and soda kilns, as well as in power plant fire boxes.

Insulating Fire Brick are porous and light weight at about 1.7kilograms a piece. They usually pale yellow and that is generally lighter in color than dense bricks which are are a more orange tan color. Insulating Fire Brick are used in electric and gas kilns and furnaces where abrasion and chemical attack are not a factor. If you can stick your finger nail in a brick then you have Insulating Firebrick.

Various Firebrick shapes Both insulating and dense fire bricks are available in a large number of standard tapered and straight shapes.

The basic sizes of start with dimensions of 230x114x65mm" or 230*114*75mm". There are many tapered versions (Arch bricks and Wedge bricks) of either size for creating arches and circles with either 230mm" thickness or 114mm" thickness.There are also Split Bricks which are half thickness : 230x114x32.5mm"

With our decades of experience, let the experts at Hongtai guide you to the correct bricks for your project!

Refractory shapes include precast cement and fused or sintered refractory products that are formed prior to installation in furnaces, boilers or other high temperature equipment. Refractories are hard, heat resistant materials and products such as alumina, silicon carbide, fire clay, bricks, precast shapes, cement or monolithics and ceramic kiln furniture. Ceramics and refractories have high melting points are suitable for applications requiring wear resistance, high temperature strength, electrical or thermal insulation or other specialized characteristics.

Kiln building refractory fire bricks, blocks, and tiles are stacked to form insulating furnaces, boilers or other thermal process vessel walls. The refractory fire bricks are usually cemented together with refractory mortar.