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A control method for preventing dry dedusting converter from blowing and venting

A control method and technology of dry dust removal, which is applied in the manufacture of converters, etc., can solve the problems of explosion venting, dry dust removal affecting the stability of the converter, promotion of dry dust removal, converter equipment damage, etc., to reduce the number of blowing and venting , solve the problem of blowing and venting, and stabilize the effect of converter operation

Active Publication Date: 2019-01-08
LAIWU STEEL YINSHAN SECTION CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Converter dry dust removal is very easy to produce explosion venting in normal smelting, and the problem of dry dust removal explosion venting has always been the main reason affecting the stability of the converter and restricting the promotion of dry dust removal
At present, all major steel mills adopt manual control mode, and use manual experience to control the blowing timing, oxygen pressure and blowing gun position. Excessive pressure or too fast lifting can easily lead to explosion venting, which seriously affects the safety and stability of the converter, and severe explosion venting will cause serious damage to the converter equipment, and even personal injury accidents

Method used

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Embodiment Construction

[0022] Hereinafter, the control method for blowing and firing the dry dust-removing converter in the present invention will be described in detail.

[0023] A control method for preventing blowing and venting of a dry dust-removing converter, the control method comprising the following steps:

[0024] 1) Confirm the amount of slag remaining and the state of slag:

[0025] By weighing the slag, the standard for the amount of slag remaining is determined as follows: when the carbon is pulled, the slag is poured and shaken to 82-85 degrees; -8 tons; after the slag splashing, the slag volume in the furnace will decrease by 0-2 tons for every 0-10° increase in the angle of the shaking furnace; during the process of rewinding the furnace, confirm the state of the slag to ensure that the state of the slag is that the slag is splashed dry and in the form of particles If the slag does not meet the requirements, it is strictly forbidden to leave slag;

[0026] 2) Loading sequence and ...

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Abstract

The invention discloses a control method for preventing blowing-in explosion venting in a dry-method dust removal converter. The control method includes the steps of: 1) verifying slag remaining quality and slag status; 2) controlling burdening sequence and waste steel status; 3) setting a blowing-in curve to control the blowing-in process; 4) verifying blowing-in ignition effect; and 5) handling adverse abnormal ignition situations. The control method can satisfy demands in the blowing-in ignition of the dry-method dust removal converter, solves a problem of blowing-in explosion venting and stabilizes operation in the converter.

Description

technical field [0001] The invention belongs to the field of converter steelmaking, and in particular relates to a control method for preventing blowing and venting of a dry dust-removing converter. Background technique [0002] Converter dry dust removal is very prone to explosion venting in normal smelting. The problem of dry dust removal and explosion venting has always been the main reason that affects the stability of converters and restricts the promotion of dry dust removal. Converter explosion venting mainly includes open blowing venting, blowing process venting and point blowing venting. Converter venting with open blowing has the highest probability of occurrence, the most difficult control, and the highest operational requirements. At present, all major steel mills use manual control methods. The timing of blowing, the oxygen pressure of blowing and the position of blowing guns are all controlled by manual experience. This method has unstable operation control, po...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21C5/30
CPCC21C5/30
Inventor 薛志高志滨于亮涛胡增跃
Owner LAIWU STEEL YINSHAN SECTION CO LTD
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