Plasma melting furnace arrangement

US4546483A · kind A · utility

Assignee

• Voest-Alpine · AT

Inventors

• Walter Lugscheider · Linz, AT
• Alois Leutgob · Steyr, AT
• Ernst Riegler · Kirchschlag, AT
• Ernst Zajicek · Leonding, AT
• Othmar Puhringer · Linz, AT

Key dates

• Filing date: Sep 27, 1983
• Grant date: Oct 8, 1985
• Expiry date: Sep 27, 2003

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S266/901
• WIPO field: Thermal processes and apparatus
• WIPO sector: Mechanical engineering

Abstract

There is disclosed a plasma melting furnace through the side wall of whose cylindrical furnace body a plurality of downwardly directed plasma burners are guided, whose mouths project into the furnace interior. In order to avoid several rechargings, which has been common so far, in particular with scrap of low apparent density, and to be able to charge continuously, without endangering the plasma burners by electric flashovers between parts of the charge material and the burner mouths or falling-down materials and by maintaining the inert gas atmosphere within the furnace, the cover of the furnace interior comprises a shoulder-likely re-entering part projecting upwardly. This part is closeable by a lid and delimits a central charging opening whose diameter is smaller than the diameter of the circle on which the mouths of the plasma burners are arranged.