Construction process of composite ladle bottom of steel ladle

Abstract

The invention discloses a construction process of a composite ladle bottom of a steel ladle. The construction process comprises the following specific construction process flows of cleaning the ladlebottom of the steel ladle; pouring a permanent lining castable; carrying out primary curing; building a working layer brick of the ladle bottom; pouring a working layer castable of the ladle bottom; and carrying out secondary curing and baking. According to construction process of the composite ladle bottom of the steel ladle, the ladle bottom is divided into three layers, namely the first layer of the ladle bottom permanent lining, the second layer of a working layer aluminum-magnesium-carbon brick layer and the third layer of a ladle bottom castable layer, wherein the first layer of the permanent lining castable can ensure the safety of the ladle bottom and heat insulation, the second layer of the ladle bottom working layer brick ensures the safe use of the repaired ladle bottom, and thethird layer of the ladle bottom castable protects the ladle bottom working brick.

Description

technical field [0001] The invention relates to the technical field of steel ladles for iron and steel metallurgy, in particular to a construction technique for ladle composite bottoms. Background technique [0002] With the rapid development of iron and steel metallurgy technology, various and complex smelting processes, and the gradual increase of high-temperature and high-vacuum smelting, the requirements for the use of molten steel containers are getting higher and higher. The refining ladle is the container with the most severe conditions in the molten steel refining process. The application of special refractory materials is large, and the configuration of refractory materials is diverse. While various refractory materials perform different smelting functions, the matching of the life of each refractory material becomes the key to the overall life of the ladle; [0003] In a service cycle of the steel ladle, due to the different service life of the refractory materials...

AI Technical Summary

Problems solved by technology

[0004] The domestic ladle cold repair cycle is roughly once in 30-50 furnaces. The refractory material in the impact area of ​​the molten steel at the bottom of the ladle needs to be replaced or repaired every time it is cold repaired, and the refractory material in the non-impact area needs to be replaced or repaired once after two or three cold repairs. If the bottom brick or bottom material is completely replaced, the repair cost will be high, resulting in a waste of refractory materials. If part of the replacement is required, the labor intensity and workload of dismantling the refractory material will be high. When the maintenance area is different, how to replace or repair the refractory material safely, conveniently and economically is the problem solved by the present invention

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