Lightweight high alumina bricks generally refer to various lightweight refractory products containing more than 45% Al2O3. Rongsheng’s lightweight high alumina bricks are usually divided into two categories. One is ordinary lightweight high alumina bricks made from natural high alumina bauxite clinker. The other is high-quality lightweight high-alumina products made from fused or sintered alumina. Because its main crystal phase is corundum, it is also called lightweight corundum brick. Contact Rongsheng for free detailed information. High-quality lightweight high alumina bricks manufacturers, low prices, and fast delivery.

Production Process and Performance Characteristics of Lightweight High-Alumina Bricks

Rongsheng’s lightweight high-alumina bricks are generally produced by the foam method. The clinker is ground and mixed with a binder (such as clay) and a foaming agent to prepare a slurry, which is cast and fired at 1350~1500℃. Generally, the volume density of lightweight high-alumina bricks is 0.4~1.35 g/cm3 and the porosity is 66%~73%. The compressive strength is 1.3~8.1 MPa and the thermal conductivity is 0.291~0.582W/(m·K)(350℃).

Physical and Chemical Indicators of Lightweight High-Alumina Bricks

Rongsheng manufacturers divide lightweight high-alumina bricks into 7 grades, including LG-1.0, LG-0.9, and LG-0.8, according to volume density. The following table lists the technical indicators of lightweight high-alumina bricks. (With the development of technology, this indicator may change.) Rongsheng manufacturers can customize lightweight high-alumina bricks according to the actual working conditions of high-temperature industrial furnaces.

Application of Lightweight High Alumina Bricks

The operating temperature of lightweight high alumina bricks is 1350~1500℃, and the operating temperature of high-purity products can reach 1650~1800℃. Lightweight high alumina bricks have high refractoriness and good thermal shock resistance and are often used as high-temperature insulation layers for kilns. High-quality lightweight high alumina bricks can be used for kiln linings that are in direct contact with flames but should not be used in places where they are directly corroded by slag. Since lightweight high alumina bricks have good chemical stability in reducing atmospheres, kilns that use gases such as hydrogen and carbon monoxide as protective atmospheres generally use lightweight high alumina bricks as insulation linings.

Rongsheng Lightweight Insulating Refractory Bricks Manufacturer

Rongsheng Refractory Material Manufacturer is a powerful manufacturer and seller of refractory materials. Rongsheng Factory is committed to providing high-quality refractory lining materials for high-temperature industrial furnaces. In addition, our refractory insulation materials can also help companies reduce energy consumption and save production costs. Rongsheng lightweight insulating refractory bricks include lightweight high-alumina bricks, lightweight silica bricks, mullite insulation bricks, Rongsheng high-strength nano insulation bricks, insulation boards, etc. If you need insulation bricks, lightweight high-alumina bricks, or lightweight clay bricks, please contact Rongsheng. Get free samples and quotes.