A refractory is a material that is resistant to decomposition by heat, pressure, or chemical attack, and retains strength and form at high temperatures. Refractory materials are used in furnaces, kilns, incinerators, and reactors.
Here to introduce a few common refractory materials.
High aluminum brick can be further divided into ordinary high aluminum brick, high load fire resistance high aluminum brick, low creep high aluminum brick, phosphate bonded high aluminum brick, micro expansion high aluminum brick, etc.
High aluminum brick features 1. Low bulk density, low thermal conductivity, good thermal insulation performance. 2. Refractory category allows direct contact with fire, suitable for all kinds of atmosphere 3. The furnace lining has good integrity, long service life, easy operation, and can be shaped arbitrarily 4. Product specifications: standard type, ordinary type, special-shaped brick. 5. Suitable for all kinds of kilns, low price, pallet packaging general. Of all the refractories, it is the most widely used.
Alkali resistant brick is a kind of low alumina brick, Al2O3 content of 30-25%, the main material is low alumina refractory clay, cement kiln system is good alkali erosion resistance of alumina series refractory products.
Alkali resistant brick is in high temperature reaction with alkali metal oxide can generate high viscosity of the liquid phase, forming a layer of glaze layer change shape, surface coverage of the surface of the brick block pore, prevent infiltration and erosion of alkali metal molten material, the purpose of alkali corrosion.
Alkali-resistant block is made of refractory clay with low alkali-resistant brick and aluminum in cement kiln system, which has good alkali-resistant corrosion resistance and low thermal conductivity.
Magnesium aluminum brick is to improve the thermal stability of magnesium bricks, adding alumina in the ingredients and the production of magnesium aluminum spinel as the main mineral magnesium brick.
Magnesium aluminum brick is a low calcium content of high quality magnesia and industrial alumina powder as the main raw material, by high pressure forming, high temperature firing. High quality pre-synthetic spinel is made of amorphous and shaped high purity refractory.Magnesia aluminum brick is widely used in cement rotary kiln or as ladle refractory, used in ladle castable production, greatly improve the corrosion resistance of steel lining.