Repairing and placing method of liners of industrial furnace

Abstract

The invention discloses a repairing and placing method of liners of an industrial furnace. The method comprises the following steps of: (1), preparing a liner module, spraying high-temperature anti-scouring coatings on the surfaces of the liners made from zirconium-containing aluminum silicate fibre materials to form modules made from zirconium-containing aluminum silicate fibres, wherein the high-temperature anti-scouring coatings are obtained by mixing solid powders and liquid ingredients and then mixing uniformly; (2), setting expansion joints, setting a plurality of expansion joints in a light refractory brick wall in a horizontal direction and a vertical direction, wherein mutually crossed expansion joints can separate the light refractory brick wall into a plurality of blocks; (3), replacing and placing the liners, peeling the damaged liners off the light refractory brick wall, placing the newly replaced liners with neighbor liners in a staggered manner. The repairing and placing method of the liners of the industrial furnace has the beneficial effects of short repair cycle, good effect and excellent quality. A preferable technical solution is specifically as follows: in the step (2), plastic plates of 12mm thick are adopted, when the expansion joints are set, the plastic plates are placed among adjacent refractory bricks of the expansion joints, so as to guarantee the size of the expansion joints to be 12mm.

Description

technical field [0001] The invention belongs to the technical field of industrial furnaces, and in particular relates to a new method for repairing and arranging industrial furnace linings. Background technique [0002] Industrial furnaces are mainly composed of furnace body (including furnace lining), heating device, hot air circulation device, trolley, trolley transmission device, furnace door, heat dissipation device, sealing device, temperature control and recording system, power system and other main parts. The furnace lining in the furnace body is mostly made of all-aluminosilicate refractory fiber cotton with excellent heat insulation performance. [0003] The main function of the furnace lining is heat insulation, heat preservation, heat reflection, and reduction of energy consumption. The furnace lining with a fully refractory zirconium-containing aluminosilicate fiber structure has excellent energy-saving performance, and can save energy by about 30% compared w...

AI Technical Summary

Problems solved by technology

[0004] However, the chemical industrial furnace has been operated for many years, and the long-term high temperature has caused serious damage to the furnace lining, which affects normal production.

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