Mannesmann Aktiengesellschaft

Sms Demag Ag

Reinhard Fuchs

Ewald Feuerstacke

Werner Hofmann

Jan Reichel

A method of slag-free teeming of metal melt includes arranging outside of the metal vessel and closely adjacent to the discharge edge of the vessel discharge opening, of a jetting lance an inclination of which relative to a bath surface in the vessel and spacing from the discharge edge is changeable and injecting, through the discharge opening of the melt vessel, immediately before start of the teeming process and during the teeming process, a fluid jet having a high kinetic pulse energy substantially parallel to the bath surface for forcing a slag melt, which is located in a discharge region of the vessel and covers the metal melt, back.

Method and apparatus for slag-free teeming of metal melt from a metallurgical melt vessel

Process and device for closing a tap hole

A method and apparatus for treating residual or waste materials that can be recycled energetically, especially light-weight refuse from shredders, which, reduced in size and classified, are stored in bunkers. The residual or waste material is fed by portions from the bunkers to a supply trough in a metal melting furnace, especially an electric arc furnace for melting steel. After a predetermined time, the residual material is placed by portions into a sluice that can be closed in a gas-tight manner. After the sluice is closed, the residual material is subjected to an oxygen-containing gas, the pressure of which is higher than the pressure at the furnace head of the metal melting furnace, until the pressure within the sluice exceed the pressure in the furnace head. The sluice output opening facing toward the furnace vessel bottom is opened after the pressure within the sluice exceeds the pressure in the furnace head and the residual material is conveyed pneumatically into the chamber part. Nozzles in the chamber part inject oxygen into the shaft to encourage combustion and to assist the acceleration of the residual or waste material through the chamber and into the bottom area of the furnace. The residual material is then submerged in the metal melt located in the bottom area of the metal melting furnace for complete conversion or incineration.

Growing community of inventors

Wassenberg, Germany

Reinhard Fuchs