Remote-control thermal-state wet-process injection lining making method

Abstract

The invention relates to a repairing and maintaining method for a blast furnace lining, in particular to a remote-control thermal-state wet-process injection lining making method. The remote-control thermal-state wet-process injection lining making method comprises the following steps that S1, equipment enters a site, specifically, a spraying manipulator is mounted in a blast furnace and is connected with an injection workstation outside the blast furnace in a matched manner; S2, banking fire is performed, specifically, the internal environment of the blast furnace is adjusted; S3, cleaning is performed, specifically, washing is performed on to-be-repaired positions of the inner wall of the blast furnace for multiple times so as to perform spraying, repairing and lining making; S4, injection is performed, specifically, the spraying manipulator is controlled to perform spraying repairing on the inner wall of the blast furnace; S5, the furnace is dried, specifically, hot air is supplied into the furnace to bake the interior of the blast furnace; and S6, the furnace is opened, specifically, the furnace is opened for normal production after the interior of the furnace reaches a specified state. By means of the remote-control thermal-state wet-process injection lining making method, the hot repair efficiency of the blast furnace can be rapidly improved and the service life of the blast furnace can be prolonged to the maximum extent during the damping-down time of the blast furnace, particularly gunning in a hot state.

Description

technical field [0001] The invention relates to a method for repairing and maintaining the inner lining of a blast furnace, in particular to a method for remote-controlled thermal wet injection lining. Background technique [0002] Blast furnace is a smelting equipment that has been in continuous high-temperature production for a long time. During the long-term operation, the lining of the blast furnace is corroded, spalled and partially or extensively damaged, which affects the normal operation of the blast furnace. To achieve the purpose of long life and high efficiency of the blast furnace and prolonging the life of the blast furnace has always been a subject of concern to the smelting engineering technicians. In the blast furnace maintenance technology, the traditional production shutdown, shutdown maintenance, and re-laying of bricks and linings are expensive, time-consuming and labor-intensive, and the production cost is high. The use of remote control thermal gunning...

AI Technical Summary

Problems solved by technology

The traditional technology adopts the dry spraying method, which cannot avoid the disadvantages of high rebound rate, poor uniformity of the sprayed layer structure (adding water to the spray gun head, it is difficult to mix the water material uniformly and fully), serious dust during spraying, etc.

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