Blast Furnace Ironmaking Plant with Highly Sealed Bottom

Abstract

The invention discloses a blast furnace ironmaking device with a high-leakproofness hearth. The blast furnace ironmaking device comprises a furnace foundation, a bottom plate, a furnace shell, a sealing plate, a first cooling device, a sealing device and a heat conducting isolation barrel, wherein a refractory brick layer and a concrete layer are sequentially horizontally arranged in a space formed by the sealing plate and the bottom plate from up to down; the first cooling device is arranged between the sealing plate and the upper surface of the refractory brick layer; the first cooling device comprises a first cooling pipe, a second cooling pipe and a plurality of heat conducting connecting plates which are in the shape of a mosquito-incense holder; the sealing device is arranged on theouter side wall of the bottom of the furnace shell; the sealing device comprises an integrally formed sealing barrel and a sealing round plate which is horizontally and fixedly connected to the upperend of the sealing barrel; two groups of drainage plates are vertically and fixedly connected between the heat conducting isolation barrel and the furnace shell; and two groups of heat conducting plates are vertically and fixedly connected between the heat conducting isolation barrel and the sealing barrel. According to the blast furnace ironmaking device, temperature of the hearth can be decreased, the hearth can be subjected to liquid seal, and leakproofness of the hearth is greatly improved.

Description

technical field [0001] The invention relates to a blast furnace ironmaking equipment. More specifically, the invention relates to a blast furnace ironmaking equipment with a highly sealed furnace bottom, which belongs to the technical field of ironmaking equipment. Background technique [0002] Blast furnace is an important ironmaking equipment, which is widely used in ironmaking production because of its advantages of large output, high production efficiency and low cost. The bottom of the blast furnace is an important part of the blast furnace, and the sealing performance of the bottom directly affects the production safety and service life of the blast furnace. At present, the bottom of the blast furnace is generally sealed and welded by the furnace bottom steel plate and the furnace shell to form a rigid sealing body, so as to meet the sealing requirements and prevent the molten iron in the furnace from seeping out and the by-product blast furnace gas from leaking out. ...

AI Technical Summary

Problems solved by technology

However, because the raw materials used in ironmaking contain some harmful elements, especially alkali metal elements, at high temperatures, these harmful elements will cause serious erosion to the inner lining of the furnace, resulting in upturning and deformation of the furnace bottom steel plate. The higher the temperature, the more deformation Seriously, the furnace bottom steel plate will be torn or cracked in the end, resulting in obvious deterioration of the furnace bottom sealing, resulting in leakage of gas in the furnace, and in serious cases, leakage of molten iron. This will not only waste resources, but also cause major safety hazards. ACCIDENT

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