A fully quenched metallurgical furnace and a method for constructing a protective layer on its inner wall

Abstract

The invention provides a full-quenching metallurgical furnace and a method for constructing a protective layer on the inner wall of the full-quenching metallurgical furnace. The full-quenching metallurgical furnace comprises an inner shell wall and an outer shell wall on the outer side of the inner shell wall, wherein the inner shell wall is made of a heat conduction material, the portion betweenthe inner shell wall and the outer shell wall are separated into several independent cooling bodies through an isolation assembly, and a closed cavity is formed inside the inner shell wall. Accordingto the provided full-quenching metallurgical furnace, a cooling wall and a furnace shell of a traditional industrial furnace are integrated, the structure is simple, and the thermal expansion consistency is good; meanwhile, the inner shell wall adopts molten slag as a raw material for building the protective layer under an actual production environment, the slag is used for protecting the furnace,the slag is used for resisting to the slag, and in addition, the two working procedures of furnace drying and protective layer construction are combined into one during blow-in; compared with the traditional industrial furnace, the provided full-quenching metallurgical furnace has the characteristics that manufacturing cost and later maintenance cost are low, the overall performance and the safety are better, and accidents caused by falling-off of refractory materials in the existing industrial furnace are avoided.

Description

technical field [0001] The invention belongs to the technical field of industry, and in particular relates to a fully quenched metallurgical furnace and a method for constructing a protective layer on its inner wall. Background technique [0002] The main components of the industrial furnace wall are the inner refractory material and the outer steel plate. The steel plate used as the outer shell is used to make the furnace body strong and ensure good air tightness, and to withstand and protect the lining refractory material; and the main refractory material The function is to resist the erosion of high temperature and melt, and protect the furnace shell. According to the classification of appearance, refractory materials can be divided into refractory bricks and unshaped refractory materials. According to different practical applications, the types and layers of refractory materials in different furnace walls are also different. , these refractory materials are usually mason...

AI Technical Summary

Problems solved by technology

[0003] Since multiple separate water-cooling elements are arranged in the furnace wall, expansion joints should be reserved between adjacent water-cooling elements. Inhomogeneity, loose contour lines will appear in the refractory material in the inner layer of the furnace, destroying the consistency and continuity of the density of the entire inner refractory material, making the refractory material easy to fall off

In addition, the separated cooling elements are generally hung on the outer steel plate respectively, and the integrity and stability of the entire furnace wall structure are not good. Under the long-term erosion and erosion of a large amount of furnace material, the refractory material in the inner layer falls off, resulting in wear and tear. Furnace accidents happen from time to time

[0004] To sum up, the current industrial furnace wall structure with water cooling system is complex, the cost of water cooling components is high, the consumption is large, and the integrity and consistency of the furnace wall structure are not good, resulting in frequent repairs and regular maintenance of refractory materials and water cooling components. Replacement, high maintenance cost

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