Fire-resisting lining body crack repairing material

Abstract

The invention discloses a fire-resisting lining body crack repairing material, which is prepared from the following raw materials in parts by mass: 60 to 62 parts of brown aluminum oxide particles, 5 to 6 parts of active alpha-Al2O3, 25 to 30 parts of Al-80 special alumina homogenizing material fine powder, 3 to 5 parts of high-quality silicon dioxide micro powder, 5 to 6 parts of plasticizers and 1.5 to 2.5 parts of storing agents. 14.5 to 15.5 parts of bonding agents are added into the raw materials; first mechanical stirring mixing is performed; after the uniform mixing, the material ageing is performed for more than 24 hours; then, the secondary mechanical stirring is performed; finally, the crack repairing material is prepared after the extrusion treatment by an extrusion machine; the crack repairing material is in a paste shape with good plasticity; finally, a 5.0-10kg plastic bag is used for sealing and packaging. The fire-resisting lining body crack repairing material has the advantages that the intensity is high; the high-temperature etching resistance is high; the high-temperature wear-resistance is high; the construction is convenient; the adhesion performance is high; the fire-resisting lining body crack repairing material can be firmly combined with the original lining body; the safe period operation of a thermal kiln furnace is met; the fire-resisting lining body crack repairing material is particularly suitable for the CFB boiler lining body crack fast rush repair.

Description

technical field [0001] The invention belongs to the technical field of refractory materials, and in particular relates to a crack filling material for refractory linings. Background technique [0002] During the operation of high-temperature kilns in metallurgy, petrochemical, building materials, electric power and other industries, the furnace wall is frequently subjected to high temperature changes, and a large comprehensive stress is generated inside the furnace wall lining, which leads to cracks and irregular cracks in the furnace wall, which affects The overall strength of the furnace wall and the safe operation of the furnace. At present, there is no professional refractory material for repairing furnace wall cracks. When the furnace wall cracks or peels off and cannot be operated, the furnace must be replaced with new refractory bricks or castables for repairs. This will increase the production cost of the enterprise. , nor can it guarantee the final use effect of th...

AI Technical Summary

Problems solved by technology

At present, there is no professional refractory material for repairing furnace wall cracks. When the furnace wall cracks or peels off and cannot be operated, the furnace must be replaced with new refractory bricks or castables for repairs. This will increase the production cost of the enterprise. , nor can it guarantee the final use effect of the furnace