Method for controlling a melt process in an arc furnace and signal processing component, program code and data medium for performing said method

US9370053B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Björn Dittmer · Lüneburg, DE
• Arno Döbbeler · Herzogenaurach, DE
• Klaus Krüger · Bensberg, DE
• Sascha Leadbetter · Birkenfeld, DE
• Thomas Matschullat · Eckental, DE
• Detlef Rieger · Baldham, DE

Key dates

• Filing date: Sep 14, 2010
• Grant date: Jun 14, 2016
• Expiry date: May 6, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/25
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

A method for controlling a melt process in an arc furnace, including a signal processing component, program code, and data medium for performing the method. Sound signals or vibrations from the interior of the furnace container are captured by solid-borne sound sensors, from which characteristic values can be derived representing the distribution of melting material, melt, and slag in the furnace fill. A characteristic values are generated in priority sequence for: thermal radiation impinging on the furnace wall of the container, the lumpiness of the melting material in the volume of furnace fill, and the change to the portion of solid melting material contacting the furnace wall. The energy distribution at the electrodes is chanced by a control system based on the characteristic values in priority sequence, such that thermal load peaks are dampened or even completely prevented.