Magnesium aluminate spinel composite brick

Abstract

The invention provides a magnalium spinelle composite brick, which is a sector block and consists of a little end magnalium spinelle layer and a big end light heat-insulation layer. The thickness A is 98 millimeters, the sector angle B is 6.53 degrees, the radius of an outer circle of the light heat-insulation layer is 2000 millimeters, the radial length of the light heat-insulation layer is 60 millimeters, and the total radial length of the magnalium spinelle layer and the light heat-insulation layer is 230 millimeters. The service life is longer than 2 years.

Description

Magnesium-aluminum spinel composite brick technical field The invention relates to a magnesia-aluminum spinel composite brick, which is especially suitable for building a rotary kiln. Background technique The magnesia-aluminum spinel bricks lining the existing rotary kiln are all two-layer structure, the outer layer close to the kiln skin is made of lightweight heat-insulating bricks, and the material is the inner layer of magnesia-alumina spinel bricks. Lightweight insulation bricks and magnesia-aluminum spinel bricks are independent. On the one hand, it is difficult to build masonry, on the other hand, it is easy to loosen. With the thinning of magnesia-aluminum spinel bricks, it is easy to cause collapse accidents in the kiln. The service life of the refractory lining of the rotary kiln is within one year. Invention content: In order to overcome the disadvantages of the prior art, the present invention provides a magnesia-aluminum spinel composite brick with a servi...

AI Technical Summary

Problems solved by technology

On the one hand, it is difficult to build masonry, on the other hand, it is easy to loosen. With the thinning of magnesia-aluminum spinel bricks, it is easy to cause collapse accidents in the kiln. The service life of the refractory lining of the rotary kiln is less than one year.

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