High Alumina Brick

Showing the single result

Brief Of Laurel Group

The Laurel Group is a renowned supplier and manufacturer of refractory brick and insulation high alumina brick. At the same time, we are committed to providing high-quality products, services, and technical support for the global market. At the same time, in order to meet the needs of overseas customers for the local market, we provide relevant certificates below:

  1. ISO9001:2008
  2. Certification ECM
  3. ISET

High Alumina Brick With Chemical Compositions

High alumina bricks contain a high percentage of alumina (Al2O3), which gives them excellent performance at high temperatures. Typical chemical composition of high alumina bricks will list below:

  1. Alumina (Al2O3) around 45-72%. This is the main constituent that provides high temperature strength and resistance to thermal shock.
  2. Silica (SiO2) about 16-28%. Silica helps in lowering the coefficient of expansion and improving resistance to chemical attack.
  3. Iron oxide (Fe2O3) such as 0.5% to 5%. Iron oxide acts as a flux and improved sinterability. However, too much iron leads to melting of bricks at high temperatures.
  4. Calcium oxide (CaO) rough at 0-5%. Calcium oxide acts as a flux in small quantities only.
  5. Magnesium oxide (MgO) close to 0-3%. MgO helps in improving resistance to metal attack in small quantities.
  6. Alkalis (Na2O+K2O) required from 0% to 3.5%. Alkalis act as fluxes and improve sinter ability.
  7. Manganese oxide (MnO) near since 0-1%. MnO improves resistance to solidification of molten chemicals.

This composition provides excellent refractoriness (around 1,600-1,700°C), high strength (200-300 MPa) and good thermal shock resistance for high alumina bricks.

High Alumina Bricks Laurel Group Provided, Have Several Advantages

  1. Aluminum refractory bricks have a very high refractory value, melting point or resistance to thermal shock.
  2. The sintered microstructure of high alumina bricks provides high density and compressive strength.
  3. Although high alumina bricks conduct heat to some extent, they provide fairly good insulation.
  4. High alumina bricks are chemically very stable. And also resistant to attack by molten chemical reactions and fumes.
  5. Fire resistant bricks contain a high percentage of alumina (Al2O3). So they can withstand temperatures of up to 1700°C without damage.
  6. Minor damage in high alumina bricks can be easily repaired by re-glazing the surface.

Product Categories