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A system and a method for determining temperature of a metal melt in an electric arc furnace

A metal melt and electric arc furnace technology, which is applied in chemical instruments and methods, electric furnaces, metal processing, etc., can solve the problems of delaying processing time, increasing the cost of consumable probes, and cumbersome problems, so as to improve the working environment and reliable release time Effect

Active Publication Date: 2017-05-10
ABB (SCHWEIZ) AG
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These temperature tests can delay processing time and also increase the cost of consumable probes
Secondly, performing such measurements is an unpleasant task for the operator, since he has to face high temperatures in a harsh environment while being equipped with cumbersome clothes

Method used

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  • A system and a method for determining temperature of a metal melt in an electric arc furnace
  • A system and a method for determining temperature of a metal melt in an electric arc furnace
  • A system and a method for determining temperature of a metal melt in an electric arc furnace

Examples

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Embodiment Construction

[0027] figure 2 Shown is a system 1 for determining / predicting the tap time of a metal melt in an electric arc furnace (EAF) 20, comprising an electromagnetic stirring system (EMS) 30 with an electromagnetic stirrer provided for stirring the metal melt, for A temperature measurement device 40 providing temperature measurement of the metal melt, and a temperature control unit 50 for estimating / predicting the temperature of the metal melt.

[0028] The EAF 20 is arranged for melting metallic material, such as metal or metal alloys. EAF can be DC EAF or ACEAF.

[0029] The EAF 20 also includes one or more electrodes 22 (this example shows three electrodes equipped with an EAF); covered with a retractable top ( figure 2 (not shown in ) container 24 through which the electrode enters the furnace; and a power supply system 26 operatively connected to the electrode 22 for supplying power to the electrode to melt the scrap into a metal melt, with reference to step S10 of FIG. 1 ....

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Abstract

The present invention relates to a system and a method for determining / predicting a tapping time for a metal melt in an electric arc furnace (EAF), wherein at least one electrode is provided for melting the metal melt until it reach a target tapping temperature, wherein the EAF further comprises a slag and smoke layer on the surface of the metal melt, wherein an electromagnetic stirrer is provided for stirring the metal melt. The method comprises supplying a power to the electrode in order to melt a scrap to a metal melt (S10), electromagnetic stirring the metal melt in the EAF (S20), blowing away the slag and smoke from the surface of the metal melt (S30), non- contactingly measuring a temperature of the metal melt (S40), receiving the measured temperature (S50), calculating a temperature profile based on the received temperature (S60), estimating / predicting a tapping temperature at a time point based on the calculated temperature profile (S70), and determining a tapping time based on the estimated temperature, the target tapping temperature and the power supplied to the electrode (S80).

Description

technical field [0001] The present invention relates to a system and method for determining the tapping time of a metal melt in an electric arc furnace (EAF), wherein the financial melt is stirred by means of an electromagnetic stirrer. Background technique [0002] A typical EAF-EMS system includes an electric arc furnace (EAF) and an electromagnetic stirring system (EMS). An EAF is a furnace that uses an electric arc to melt metallic materials. A typical EAF includes one or more electrodes and a power system operatively connected to the electrodes. The EAF is also equipped with gas burners mounted on the side walls and arranged to provide chemical energy to the melt. Additional chemical energy is provided by means (eg, lances) for injecting oxygen and carbon into the furnace. The operation of the electrodes is controlled by a control unit operatively connected to the power system. The power supplied to the electrodes to create the arc is called arc power. The electrod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F27D27/00H05B6/34B01F13/08C03B5/185C21C5/52F27D21/00F27D19/00
CPCC21C5/5217C21C5/5247F27D27/00C21C2005/5288C21C2300/06F27D2019/0003H05B7/18F27D21/0014F27D3/1509Y02P10/20Y02P10/25B01F33/451F27B3/28F27B3/085G01J5/0044
Inventor 张小京J-E·埃里克森M·伦德C·斯瓦恩
Owner ABB (SCHWEIZ) AG
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