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Blast furnace middle sleeve drawing process

A drawing process and blast furnace technology, used in metal processing, manufacturing tools, metal processing equipment, etc., can solve the problems of time-consuming, low efficiency, laborious and other problems in drawing blast furnaces, and achieve the effect of reducing the time of wind break

Active Publication Date: 2018-05-11
MCC BAOSTEEL TECH SERVICE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a drawing process for the middle sleeve of a blast furnace, which is used to solve the problems of time-consuming, laborious and low efficiency in drawing the middle sleeve of a blast furnace in the prior art

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  • Blast furnace middle sleeve drawing process
  • Blast furnace middle sleeve drawing process
  • Blast furnace middle sleeve drawing process

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Embodiment Construction

[0034] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0035] According to attached figure 1 The blast furnace air supply system shown includes a large sleeve 100, a middle sleeve 200 and a small sleeve 300, wherein the large end face of the middle sleeve 200 extends into the small end face of the large sleeve 100, and the gap between the middle sleeve 200 and the small end face of the large sleeve 100 is It is welded and sealed by the pressure plate 201 and tightened by the jacking bolt ...

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Abstract

The invention provides a blast furnace middle sleeve drawing process. A drawing machine is adopted for drawing a middle sleeve, the middle sleeve is pretreated before drawing, thus, the middle sleevemeets the drawing requirements, and pretreatment comprises the steps of dismounting of a puller bolt and cut-off of a pressing plate; then check settings of the drawing machine are conducted and comprise drawing machine test running and connection of the drawing machine and a forklift; and finally, the middle sleeve is drawn through the drawing machine. Through the blast furnace middle sleeve drawing process, the dismounting and replacing construction efficiency of the blast furnace middle sleeve is improved, and the damping down time of a blast furnace due to overhaul construction is shortened.

Description

technical field [0001] The invention belongs to the field of heating, and relates to a blast furnace tuyere, in particular to a drawing process for a blast furnace middle jacket. Background technique [0002] Air supply system for ironmaking blast furnace, including three inner sets: large, medium and small. The environment in which the air supply system is located is extremely harsh. It not only has to withstand a high temperature of about 1500 degrees, but also has to withstand the scour of high-temperature iron flow and the wear and tear of furnace materials and slag. [0003] Due to the direct thermal erosion of liquid slag and iron and the severe wear of falling hot material, the middle sleeve is particularly easy to be damaged, and the damaged middle sleeve is prone to wear and leakage, resulting in water leakage and affecting the normal production of the blast furnace. Therefore, the damaged middle sleeve must be replaced in time. [0004] The existing process for r...

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Application Information

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IPC IPC(8): B23P19/027
Inventor 高勇超刘杰夏洪飞茅忠道舒业魁
Owner MCC BAOSTEEL TECH SERVICE