Fast change method of large-scale converter movable gas hood

A technology of movable hood and replacement method, which is applied in the direction of manufacturing converters, improving process efficiency, and improving energy efficiency. It can solve the problems of difficult adjustment angle, high construction cost, and long construction period, so as to improve operation safety. , to ensure the construction quality and shorten the construction period
CN101851694AInactive Publication Date: 2010-10-06SHANGHAI BAOYE GRP CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHANGHAI BAOYE GRP CORP
Publication Date
2010-10-06
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to the field of exhaust or separation devices of gas or smoke dusts in converters for processing and treating pig irons and discloses a fast change method of a large-scale converter movable gas hood. After a fixed gas hood is disassembled, the method sequentially comprises the following steps of: firstly, disassembling a cooling water pipe and rocking a converter (1) until the furnace bottom is arranged upwards; secondly, fixing a movable gas hood (2) on the converter (1) through a chain fall (4); thirdly, hoisting the movable gas hood (2) down through a crane (3); fourthly, hoisting a new movable gas hood onto the furnace bottom of the converter (1) through the crane (3) and fixing the new movable gas hood through the chain fall (4); fifthly, rocking the converter (1) until the furnace bottom is arranged upwards; and sixthly, reassembling a lifting chain of a hoisting device of the movable gas hood (2) and removing the chain fall (4). The invention has the advantages of simple steps, convenient operation, short construction period, less influence to production and high production efficiency.
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Description

Technical field

[0001] The invention relates to the field of discharge or separation devices for waste gas or smoke in a converter used for processing pig iron, in particular to a method for quickly replacing a large converter movable hood. Background technique

[0002] Converter steelmaking is a common method of smelting pig iron into steel, and converter steelmaking is carried out in the converter. When steelmaking, the converter is in a horizontal state at first, after injecting liquid pig iron and corresponding auxiliary materials, air or oxygen is blown, and the converter is turned to make it upright, at this time the steelmaking reaction occurs in the converter. When the steelmaking reaction is about to complete, the blast is stopped and the converter is turned back to a horizontal position, and the molten steel is poured from the converter to the ladle to complete the steelmaking process. During steelmaking, a large amount of exhaust gas and smoke will be discharged from ...

Claims

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