Prefabricated part of blast furnace throat

Abstract

The invention belongs to the technical field of blast furnace equipment, and particularly discloses a prefabricated part of a blast furnace throat. The prefabricated part of the blast furnace throat comprises a furnace throat body, the furnace throat body is formed by mutual splicing of a plurality of prefabricated plates, each prefabricated plate is made of high-temperature resistant metal materials, a filling cavity is arranged inside each prefabricated plate, and each filling cavity is filled with clay slurry; and the clay slurry is baked at high temperature to form clay bricks, a dovetailinserting connecting groove is formed in one side of each prefabricated plate, a dovetail inserting connecting block is arranged on the other side of each prefabricated plate, the dovetail inserting connecting block on one prefabricated plate is slidably connected within the dovetail inserting connecting groove of another prefabricated plate in an inserted mode, each dovetail inserting connectinggroove communicates with the corresponding filling cavity, a positioning inserting groove is formed in the bottom end of each prefabricated plate, a positioning inserting connecting block is fixed onone side of each positioning inserting groove, and a far-infrared ceramic coating is coated on the inner wall of each prefabricated plate. According to the prefabricated part of the blast furnace throat, the fact that the safety and efficiency of blast furnace smelting is influenced due to the fact that the furnace throat body falls off from a furnace body under the upward impact force from the outside is effectively prevented.

Description

technical field [0001] The invention belongs to the technical field of blast furnace equipment, in particular to a blast furnace throat prefabricated part. Background technique [0002] At present, domestic iron-making blast furnaces are called large-scale blast furnaces with an area of ​​more than 2500m3. Generally, more than 12,000 tons of raw fuel are loaded into the furnace through furnace top equipment every day, of which sinter and coke with strong abrasiveness are the main ones. It will cause great erosion and wear to equipment such as furnace throat steel bricks, and the equipment is in a high temperature environment, the normal temperature is 250°C, and the short-term temperature is 600-700°C, while the material falling into the furnace is approximately at room temperature, and the hardness of the abrasive remains unchanged. And the maximum temperature of furnace throat steel brick reaches 600~700℃. [0003] Blast furnace throat steel bricks are used in the blast f...

AI Technical Summary

Problems solved by technology

[0004] Most of the throats of existing blast furnaces are made of clay bricks, and at the same time, the clay bricks are wrapped with wear-resistant and high-temperature cast steel to achieve high-temperature and wear-resistant effects. Poor cushioning and cushioning, which will cause the throat to bulge when it is used for a long time or the clay brick and the protective cast steel will fall off, which will lead to the phenomenon that the furnace throat body will fall off the furnace body, which will affect the safety and security of blast furnace smelting. Efficiency

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