The classification of complicated shape brick

Chinafirebrick provides refractory products, calcium silicate products, castable & mortar, fire brick china, ladle & tundish nozzle, ceramic fiber with high quality for you. Refractory brick manufacturers suggest that special-shaped refractory bricks according to the preparation process can be divided into firing bricks, not burning bricks, fused brick (cast brick), fire-resistant insulation bricks; specific type of refractory bricks by shape and size can be divided into standard Brick, ordinary brick, and so on. Shaped refractory bricks can be used as high-temperature building materials and structural materials for building furnaces and various thermal equipment. Shaped refractory bricks can withstand various physical and chemical changes and mechanical effects at high temperatures. Such as refractory clay brick, high alumina brick, silica brick, magnesia carbon bricks and so on.

Special strength refractories bricks, its main feature is the early high strength, 3-7 days maximum room temperature compressive strength of up to 30MPa or more, the disadvantage is poor in the temperature volumetric stability, reduced strength, the maximum decline of up to 40%, so require room temperature Strength must meet the design and national standards requirements. The main factors that reduce the temperature strength are: low-calcium high-alumina cement of special-shaped refractory brick in the heating furnace oven heating process to a certain temperature (350 ℃ or so), the hydrate began to dehydrate, the hydration of cement stone structure, dense Degree and strength decreased, castable volume changes, then castable body strength dropped to the lowest point, then stabilized.

With the heating temperature rose to 1100 ℃, the cement stone gradually sintered, shaped refractory brick crystal began to convert mullite crystals. With the rising temperature, mullite crystals continue to grow, castable in the matrix glass phase was liquid state, the formation of high temperature ceramic sintered, the strength significantly improved. At about 1300 ℃, the strength of the special-shaped refractory brick body can reach more than 60MPa, which is a special characteristic of the special-shaped refractory bricks at high temperature.

Xinmi Changxing furnace refractory Tips: You may also on the refractory fire brick, magnesia carbon brick, refractory manufacturers, refractory bricks prices, high alumina refractory bricks, clay refractory bricks, Henan refractory brick factory, Xinwei refractory brick factory, Xinwei refractory brick factory Interested if you have any need please call our service hotline.

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Article Source: Thermal conductivity of refractory bricks
Company name: Henan Xinmi Changxing Refractory Materials Co.,Ltd
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