High-alumina composite refractory brick

Abstract

The invention provides a high-alumina composite refractory brick. The high-alumina composite refractory brick comprises a high-alumina refractory material framework and a light high-alumina refractory material filling layer, wherein the high-alumina refractory material framework is of a cuboid concave surface structure, zigzag crinkles are arranged on all four inner sides of the concave surface structure, the high-alumina refractory material filling layer is arranged in the concave portion of the concave surface structure and is tightly attached to the four sides of the concave surface structure, and the upper surface of the high-alumina refractory material framework is flush with the upper surface of the light high-alumina refractory material filling layer. The high-alumina composite refractory brick has the advantages that construction of a heat insulation lining is more convenient, construction intensity is reduced, the structure is simple, production is convenient, service life is long, and heat insulation performance is excellent.

Description

technical field [0001] The invention belongs to the field of refractory materials, and in particular relates to a refractory brick composed of a high-alumina refractory material and a lightweight high-alumina refractory material. Background technique [0002] In the existing technology, the raw materials of refractory bricks have poor thermal insulation properties. If thermal insulation is required, additional masonry of the thermal insulation layer will be added, which will increase the cost and construction period. And the current refractory thermal insulation lining is usually composed of a working layer and a thermal insulation layer. After long-term use, the density and high-temperature shrinkage of the working layer and the thermal insulation layer are different, resulting in a gap between the two layers, making the refractory thermal insulation lining Shortened service life. Contents of the invention [0003] The problem to be solved by the present invention is to ...

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Problems solved by technology

[0002] In the existing technology, the raw materials of refractory bricks have poor thermal insulation performance. If thermal insulation is required, additional masonry of thermal insulation layer will be added, which will increase the cost and construction period.

And the current refractory thermal insulation lining is usually composed of a working layer and a thermal insulation layer. After long-term use, the density and high-temperature shrinkage of the working layer and the thermal insulation layer are different, resulting in a gap between the two layers, making the refractory thermal insulation lining shortened service life

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