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Automatic control method for feeding, oxygen lance position and oxygen flow in converter steelmaking process

An oxygen flow, converter steelmaking technology, applied in the direction of manufacturing converters, etc., to improve the stability of molten steel quality, reduce the consumption of raw and auxiliary materials, and reduce the cost of converter steelmaking

Inactive Publication Date: 2018-01-09
TANGSHAN IRON & STEEL GROUP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The contents of the above three patents only describe a certain aspect or a certain process in the steelmaking process, and have certain limitations in guiding the control of the converter steelmaking process

Method used

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  • Automatic control method for feeding, oxygen lance position and oxygen flow in converter steelmaking process
  • Automatic control method for feeding, oxygen lance position and oxygen flow in converter steelmaking process
  • Automatic control method for feeding, oxygen lance position and oxygen flow in converter steelmaking process

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Embodiment 1

[0042] Embodiment one of the present invention, referring to the attached image 3 :

[0043] 1) Start the static calculation model and set various material parameters in the static model;

[0044] 2) The static calculation model automatically obtains the information of molten iron and steel scrap for smelting furnaces, the amount of molten iron charged is 72.4t, the temperature of molten iron is 1320°C, and the amount of scrap steel added is 6.23t;

[0045] 3) Set the target value of the molten steel in the smelting furnace in the static calculation model, the target temperature of the molten steel is 1665°C, and the target carbon content is 0.06%;

[0046] 4) In the static calculation model, set the reference lance position of the oxygen lance according to the charging amount of the smelting furnace, and the reference lance position is 1.85m;

[0047] 5) Use the pre-calculation function in the static model to generate the material step information and oxygen step informati...

Embodiment 2

[0052] Embodiment two of the present invention, referring to the attached Figure 4 :

[0053] 1) Start the static calculation model and set various material parameters in the static model;

[0054] 2) The static calculation model automatically obtains the molten iron and steel scrap information of smelting furnaces. The molten iron loading is 72.1t, the molten iron temperature is 1336°C, and the scrap steel loading is 5.1t;

[0055] 3) Set the target value of the molten steel in the smelting furnace in the static calculation model, the target temperature of the molten steel is 1665°C, and the target carbon content is 0.06%;

[0056]4) In the static calculation model, set the reference lance position of the oxygen lance according to the charging amount of the smelting furnace, and the reference lance position is 1.85m;

[0057] 5) Use the pre-calculation function in the static model to generate the material step information and oxygen step information of the smelting furnace...

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Abstract

The invention relates to an automatic control method for feeding, the oxygen lance position and the oxygen flow in the converter steelmaking process and belongs to the technical field of converter steelmaking processes. According to the technical scheme of the automatic control method, three parts of a static calculation model, a feeding control module and an oxygen lance control module are included; the feeding control module transmits a material step information instruction in the smelting process to a PLC of a feeding system, and automatic control over feeding operation in the smelting process is achieved through a basic automation system of the feeding system; and the oxygen lance control module transmits an oxygen step information instruction in the smelting process to a PLC of an oxygen lance system, and automatic control over the oxygen lance position and the oxygen flow in the smelting process is achieved through execution of a basic automation system of the oxygen lance system. The automatic control method has the beneficial effects that full-process automatic control over feeding, the oxygen lance position and the oxygen flow in the converter steelmaking process is achieved, the standard operation level of smelting and the quality stability of molten steel are advantageously improved, the production efficiency of a converter is improved, consumption of raw materials and auxiliary materials of the converter is reduced, and the steelmaking cost of the converter is reduced.

Description

technical field [0001] The invention relates to an automatic control method for feeding materials, oxygen lance positions and oxygen flow in the converter steelmaking process, and belongs to the technical field of converter steelmaking process. Background technique [0002] The process of converter steelmaking is to use the oxygen lance to blow high-speed oxygen jet into the furnace, and use the high-level bunker on the top of the converter to add slagging material and coolant, so that oxygen, slagging material, coolant and molten iron will undergo complex physical processes in the furnace. Chemical reaction to achieve the purpose of removing impurities in molten steel and raising the temperature of molten steel. With the development of computer automatic control technology, the control of feeding, oxygen lance position and oxygen flow in the converter steelmaking process has gradually shifted from manual experience to computer automatic control, thus realizing automatic con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21C5/30
Inventor 张朝发郝华强马旭朝张宝景武世卿赵树鑫王振刚
Owner TANGSHAN IRON & STEEL GROUP
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