Treatment method of blast furnace central conical section throat and its wear-resistant structure

Abstract

The invention discloses a blast furnace center conical segment throat pipe and a treating method for a wear-resistant structure thereof, belonging to the technical fields of design and manufacture of accessory devices of metallurgical equipment. The invention provides a blast furnace center conical segment throat pipe strong in wear resistance and long in service life and a treating method for the wear-resistant structure of the blast furnace center conical segment throat pipe. The blast furnace center conical segment throat pipe comprises a blast furnace center conical segment throat pipe matrix, wherein a wear-resistant structure composed of a wear-resistant cladding layer and a wear-resistant mounting layer is covered on the surface at the inner side of the blast furnace center conical segment throat pipe matrix, and the wear-resistant cladding layer is covered on the wear-resistant mounting layer and the inner side wall of the blast furnace center conical segment throat pipe matrix which is not provided with the wear-resistant mounting layer. According to the treating method, infiltration is realized in such a way that the inner side of the blast furnace center conical segment throat pipe matrix is provided with a refractory accommodating cavity for accommodating wear-resistant material powder, and then, the blast furnace center conical segment throat pipe matrix is wholly heated through a resistance furnace.

Description

technical field [0001] The invention relates to a blast furnace central conical section throat, which belongs to the technical field of design and manufacture of metallurgical equipment attachments. The invention also relates to a treatment method for the wear-resistant structure of the blast furnace central conical section throat. Background technique [0002] At present, the central cone section throat pipes in domestic blast furnace top charging equipment are generally made of surfacing wear-resistant welding consumables or wear-resistant castings. Since the central conical throat of the blast furnace is located at the top of the feed inlet, it bears the most serious erosion and wear of the furnace charge, and its service life is generally about 8 months; while the equipment at the lower part of the central conical throat is relatively less erosive. Its service life can reach about two years, resulting in a large gap between the maintenance period of the central cone sec...

AI Technical Summary

Problems solved by technology

Since the central conical throat of the blast furnace is located at the top of the feed inlet, it bears the most serious erosion and wear of the furnace charge, and its service life is generally about 8 months; while the equipment at the lower part of the central conical throat is relatively less erosive. Its service life can reach about two years, resulting in a large gap between the maintenance period of the central cone section throat and the related equipment in the lower part

The overall replacement will cause a large increase in the operating cost of the equipment, and it will also cause a waste of resources; if it is not replaced, it will seriously affect the normal production, not only reduce the production volume, but also cause waste of production raw materials, but the gain outweighs the loss

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