Classification and application of mullite insulating bricks

Classification of  mullite insulating brick:

Mullite insulating brick is different according to the density is divided into light and heavy mullite brick, according to the use of different temperature are divided into: 1350 mullite bricks, 1450 mullite bricks, 1550 mullite bricks etc..

Performance and application of mullite insulating brick:

Refractory degree is high, can reach more than 1790 DEG C. Refractoriness under load was 1600 ~ 1700 DEG C. Compressive strength of 70 ~ 260MPa. Good thermal shock resistance. Sintered mullite brick and fused mullite brick two. Sintered mullite brick with high alumina bauxite clinker as the main raw material, adding a small amount of clay or raw bauxite as binder, after molding, sintering and made. Electric cast mullite brick with high alumina, A12O3 and refractory clay as raw material, adding charcoal or coke fines as a reducing agent, after forming by reduction of electric melting method to manufacture. Crystal fused mullite than sintered mullite, thermal shock resistance than sintered products. Uniformity of content in the high temperature properties of alumina and mullite mainly depends on their distribution and glass. Mainly used for blast furnace hot blast stove top, bottom, and glass furnace regenerator, ceramic sintering furnace, petroleum cracking system dead lining.

What is fire resistant plastic

Fire resistant plastic is composed of 70% ~ 80% granular and powdery materials, plus 10% ~ 25% plasticity clay binder and refractory material amount of plasticizer prepared.

Plastics can be made into flake, lump. Some bond can be added in the construction. Whenusing the mixture compaction or ramming, when baked to form dense lining and structures. In the pre hardening plasticity is good; with certain strength after hardening. Have good sintering performance and volume stability of certain and other high temperature properties at high temperature. A stiff mud paste, and keep in a long period, high plasticity clay plasticity contain more points, water is ramming material much. Mainly used for various heating furnace is not in direct contact with the molten material, material for clay and high alumina, there are silica based, magnesia and chrome, zircon and silicon carbide etc..

Mainly used for lining of the body in the iron and steel industry for various kinds of heating furnaces and soaking furnace, annealing furnace, sintering furnace and furnace top etc..