Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for positioning slag stopping plug

A positioning method and technology of slag stoppers, which are applied in the manufacture of converters, etc., can solve the problems of slag stopper positioning, etc., and achieve the effects of reducing erosion, reducing rephosphorization of molten steel, and improving the effect

Active Publication Date: 2014-04-02
ANGANG STEEL CO LTD
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention aims to provide a method for positioning the slag stopper that can solve the problem that the slag stopper cannot be positioned at the angle of the slag stopper added to the converter, thereby improving the success rate of slag stopper and realizing effective control of tapping and lowering slag stopper

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] In the following, a 180-ton converter is taken as an example to further illustrate the present invention.

[0017] When tapping steel with slag dart, the converter angle is -92°.

[0018] The specific method and steps for positioning the slag stopper are as follows:

[0019] 1. When the furnace is empty, shake the converter to a tapping angle of -92°.

[0020] 2. Start the slag blocking dart car, insert the slag blocking plug into the tapping port, fix the left and right positions of the slag blocking dart car, and mark and record the front and back positions of the slag blocking dart car at this time.

[0021] 3. Exit the slag blocking dart car and roll the converter down to -100°.

[0022] 4. Add the slag stopper to the tapping port again, record the front and rear positions of the slag stop dart car at this time, and measure the distance difference between the two front and rear positions of the slag stop dart car as 550mm.

[0023] 5. In the future, each time the dart is adjust...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a method for positioning a slag stopping plug. The method comprises the following steps: rocking a converter to be in a darting angle in no-load furnace, adding the slag stopping plug into a steel discharge hole, recording the front and rear positions of a slag stopping dart trolley, withdrawing the slag stopping dart trolley, further rocking the converter for a certain angle downwards, further adding the slag stopping plug into the steel discharge hole, recording the front and rear positions of the slag stopping dart trolley at the moment, measuring the front and rear position difference values of the operation, rocking the converter to be in the angle when calibrating the dart each time when the steel discharge hole is changed, adding the slag stopping plug into the steel discharge hole, recording the front, rear, left and right positions of the slag stopping dart trolley at the moment, subsequently moving the slag stopping dart trolley to the opposite direction of darting for the distance of the difference value, that is, the darting position when steel is discharged. By adopting the method, the slag stopping success rate can be increased, the moisture of molten steel can be accurately controlled, molten steel rephosphorization is reduced, alloy consumption is reduced, the alloy element yield is increased, the impurity content in the steel is reduced, the steel ladle refining effect is improved, and erosion on steel ladle materials is reduced.

Description

Technical field [0001] The invention belongs to the technical field of steelmaking technology, and in particular relates to a method for positioning a slag stopper for a tapping dart. Background technique [0002] Slag tapping is one of the necessary methods for the production of pure steel. It is conducive to accurately controlling the composition of molten steel, effectively reducing the rephosphorization of molten steel, improving the recovery rate of alloy elements, and reducing alloy consumption; it is beneficial to reduce the content of inclusions in the steel and increase the ladle Refining effect; it also helps to reduce the erosion of the ladle refractories. At present, the slag blocking methods include a slag blocking cap method that blocks the primary slag drop, a slag ball, a slag stopper, a pneumatic slag stopper, and a pneumatic slag blowing method that block the secondary slag drop. [0003] A steelmaking plant uses a slag stop cap method for primary slag blocking a...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/28
Inventor 舒耀李伟东齐磊袁皓杨辉王成青赵晨光王荣
Owner ANGANG STEEL CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com