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Method for calculating slag carrying amount of converter tapping

A calculation method and converter technology, applied in the manufacture of converters, complex mathematical operations, design optimization/simulation, etc., can solve problems such as difficult operation, difficult to accurately measure the density of steel slag, and poor on-site operating environment

Inactive Publication Date: 2021-09-21
河钢乐亭钢铁有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional method of evaluating the amount of slag from the converter is to measure the thickness of the top slag of the ladle. The inner diameter of the ladle is a known condition, calculate the volume of the top slag of the ladle, and multiply the density by the volume to obtain the quality of the slag from the converter. The density of steel slag is difficult to measure accurately, the inner wall of the ladle may not be a regular circle, and the accuracy of measuring the thickness of steel slag is related to the measurement tools, methods and measurement environment, and the operation of accurate measurement at high temperature is difficult
All in all, by measuring the thickness of ladle top slag and using the product of volume and density, it is difficult to obtain an accurate amount of slag from the steel strip of the converter, and the on-site operating environment is harsh, and there are potential safety hazards

Method used

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  • Method for calculating slag carrying amount of converter tapping
  • Method for calculating slag carrying amount of converter tapping
  • Method for calculating slag carrying amount of converter tapping

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1－3

[0046] Mass percentage content of aluminum element in converter smelting end slag ω 出钢Al , The mass percentage content of aluminum element in the slag material used for top slag modification ω 渣料Al , The mass percentage content of aluminum element in the slag after the ladle top slag modification is completed ω 改质Al , Top slag modification slag material burnt weight W 渣料烧减通过 Get tested. The mass percentage content of oxygen in molten steel at the end point of converter smelting ω 终点O , Mass percentage content of oxygen in molten steel after ladle top slag reforming ω 改质O It was detected by oxygen meter.

[0047] Embodiment 1-3 The steps for calculating the amount of slag in the steel strip are as follows:

[0048] Through (1) formula W 渣料Al =W 渣料 ×ω 渣料Al Calculate the weight W of the aluminum element in the slag material for each type of top slag modification 渣料Al , and then add up to get the total weight ∑W of aluminum in all slag materials used for top slag modific...

Embodiment 4－6

[0065] Mass percentage content of alumina in converter smelting end slag ω 出钢Al2O3 , The mass percentage content of alumina in the slag material used for top slag modification ω 渣料Al2O3 , The mass percentage of elemental aluminum in the slag used for top slag modification ω 渣料Als , Mass percentage content of alumina in slag after completion of ladle top slag modification ω 改质Al2O3 , Top slag modification slag material burnt weight W 渣料烧减通过 Get tested. The mass percentage content of oxygen in molten steel at the end point of converter smelting ω 终点O , Mass percentage content of oxygen in molten steel after ladle top slag reforming ω 改质O It was detected by oxygen meter.

[0066] Embodiment 4-6 The steps for calculating the amount of slag in the steel strip are as follows:

[0067] Through (6) formula W 渣料Al2O3 =W 渣料 ×ω 渣料Al2O3 Calculate the weight W of alumina in the slag material for each type of top slag modification 渣料Al2O3 , and then add up to get the total weight...

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Abstract

The invention relates to a method for calculating the slag carrying amount of converter tapping, which is suitable for an IF steel smelting process and a smelting process similar to IF steel. After converter tapping, molten steel enters a steel ladle, the top slag of the steel ladle is modified, and the slag carrying amount W of converter tapping is calculated by the following steps: (1) calculating the weight W of aluminum element in each slag material for modifying the top slag, and the slag material Al; (2) calculating the total weight Sigma W slag material Al of aluminum elements in all slag materials for top slag modification; (3) calculating the weight WO of the oxygen element entering the steel ladle top slag in the molten steel; (4) calculating the converter tapping slag quantity W. By adopting the method disclosed by the invention, the tapping slag carrying amount of different slag blocking levels can be determined, on this basis, technicians are guided to formulate the slag blocking levels of different steel grades, and meanwhile, a basis is provided for subsequent adjustment of refining slag components and improvement of molten steel quality.

Description

technical field [0001] The invention belongs to the technical field of steelmaking in the metallurgical industry, and in particular relates to a method for calculating the amount of slag in a converter furnace. Background technique [0002] The traditional method of evaluating the amount of slag from the converter is to measure the thickness of the top slag of the ladle. The inner diameter of the ladle is a known condition, calculate the volume of the top slag of the ladle, and multiply the density by the volume to obtain the quality of the slag from the converter. The density of steel slag is difficult to measure accurately, the inner wall of the ladle may not be a regular circle, and the accuracy of measuring the thickness of steel slag is related to the measurement tools, methods and measurement environment, and the operation of accurate measurement at high temperature is difficult. All in all, by measuring the thickness of ladle top slag and using the product of volume a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F17/11C21C5/28
CPCG06F30/20G06F17/11C21C5/28
Inventor 李哲张红奎蔡祖成吕利伟宋波王兆旺杨晓江张大勇李中华
Owner 河钢乐亭钢铁有限公司