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Maintenance and clinker removal method of sub lance for converter dual blown from top and bottom, and equipment

A top-bottom combined blowing and converter technology, which is applied in the manufacture of converters, etc., can solve the problems of inflexible movement of the scraper-type slag scraper, affecting the operation of the sub-gun program of the converter, and incomplete cleaning of slag during maintenance. Converter smelting cycle, improving the operation rate of the sub-lance, and the effect of improving the operation rate of the converter

Inactive Publication Date: 2009-04-29
ANGANG STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in the prior art, the top-bottom re-blowing converter sub-lance maintenance is not clean and the slag removal is not thorough, the action of the split scraper type slag scraper is not flexible, the failure rate is high, and the converter sub-lance program is affected operation, delaying production, and when the sub-gun is used for testing again, the sub-gun is not clean due to maintenance and removal of slag, and the test probe is not installed properly, so that the test cannot be performed, resulting in a low operation rate of the sub-gun, which cannot meet production needs

Method used

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  • Maintenance and clinker removal method of sub lance for converter dual blown from top and bottom, and equipment
  • Maintenance and clinker removal method of sub lance for converter dual blown from top and bottom, and equipment

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Embodiment Construction

[0019] The preferred embodiment for realizing the present invention is: the embodiment of the 260t top-bottom combined blowing converter sub-lance maintenance and slag removal method, and the technical solution adopted is to carry out the test or lift the sub-lance after the sub-lance goes deep into the converter. The scraping brush removes the sticky residue, so the auxiliary gun can be maintained and cleaned in time to achieve normal use. To maintain the slag removal method, follow the steps below:

[0020] 1. Equipped with sub-gun test probe,

[0021] 2. The auxiliary gun goes deep into the converter for the first test,

[0022] 3. Lift the sub-gun after the test, and then wipe off the bonding residue on the sub-gun body and the probe equipment end,

[0023] 4. Equip the sub-lance with a test probe again, go deep into the converter for the second test, and then scrape the bonding slag of the sub-lance again.

[0024] 5. Lift the sub-gun after the test, and then scrape th...

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Abstract

This invention discloses method and apparatus for maintaining and removing slag from sublance of steelmaking top-bottom composite blown converter. The method solves the problems of adverse effects and many malfunctions caused by slag adhered to sublance. The method comprises: brushing slag, maintaining sublance and removing slag on the probe end during sublance lifting process after testing in converter. Therefore, the sublance can receive maintenance in time, and the method has such advantages as simple process, good slag removing effect, and few malfunctions. The brushing apparatus is easy to adjust, use and maintain. The converter with cleaned sublance has such advantages as high productivity, and short smelting period.

Description

technical field [0001] The invention relates to a top-bottom double-blowing converter for steelmaking, in particular to a maintenance and slag removal method and device for a sub-gun of the double-blowing converter, belonging to the ferrous metallurgy steelmaking converter maintenance technology. Background technique [0002] In the steelmaking top-bottom re-blowing converter, the auxiliary gun is used to test the composition and temperature of the molten steel during the blowing process. Usually, each furnace of steel is controlled and smelted to pass at least two tests. The first test converter is in a state of intense oxygen blowing of 80%-90%. During the process, the molten pool churned and the steel slag splashed and overflowed, so that the gun body was bound to be bonded with steel slag during the test of the sub-lance. When the bonded steel slag was serious, it would cause failure or even damage accidents, which would affect the use of the sub-lance. Due to the influe...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/46
Inventor 魏春新张越张志文
Owner ANGANG STEEL CO LTD
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