Diatomite insulated lightweight firebrick Refractory Materials Iron and steel smelting
Refractory fired from refractory clay or other refractory materials. Light yellow or brown. It is mainly used in building smelting furnace and can withstand high temperature of 1580 ℃ - 1770 ℃. Also known as refractory brick. Refractory of certain shape and size. According to the preparation process, it can be divided into sintered brick, non sintered brick, fused cast brick (fused cast brick) and refractory and heat insulation brick; According to the shape and size, it can be divided into standard brick, ordinary brick, special-shaped brick, etc. It can be used as structural materials for high-temperature building materials, building kilns and various thermal equipment. It can withstand various physicochemical changes and mechanical effects at high temperature. Such as refractory clay brick, high alumina brick, silica brick, magnesia brick, etc.
1, chemical composition: the main composition determines the quality and characteristics of the refractory
2, volume density: unit volume weight, high density, indicating good density, strength may be high, but the thermal conductivity may be large.
3, apparent porosity: no specific requirements, but as a manufacturer must strictly control the apparent porosity.
4, load softening temperature: also known as high temperature load deformation temperature, this parameter is very important, marking the high temperature resistance of the material
5, thermal shock resistance: resistance to rapid temperature changes without being damaged
6, compressive strength: withstand (room temperature) the maximum pressure capacity
Diatomite insulated lightweight firebrick
Diatomite insulated lightweight firebrick is a heat insulation refractory product made of diatomite as the main raw material. It is mainly used in 900℃ below the insulation layer.
Chinese standard (GB 3996 -- 1983) divides diatomite insulation products into GG -- 0.7A, GG -- 0.7B, GG -- 0.6, GG -- 0.5a, GG -- 0.5B and GG -- 0.4 by volume density.