Apparatus for the production of metal including a furnace for melting metal provided with a crucible inside which a metal charge is melted. The furnace provides for tapping a liquid metal disposed on the bottom of the crucible and includes a tapping channel for the transfer of the liquid metal from the furnace. The apparatus also includes a delivery unit for delivering inert material (S) having a delivery device for the selective delivery of the inert material (S) into the tapping channel.

Provided is a cyclonic plasma melting furnace. A melting furnace chamber body includes an inlet through which waste is input and an outlet through which air or gas is discharged. The outlet is provided in a direction opposite to the inlet. At least one plasma torch is provided on the melting furnace chamber body so as to be inclined at a predetermined angle with respect to a direction in which the air or the gas is discharged through the outlet.

Provided is a cyclonic plasma melting furnace. A melting furnace chamber body includes an inlet through which waste is input and an outlet through which air or gas is discharged. The outlet is provided in a direction opposite to the inlet. At least one plasma torch is provided on the melting furnace chamber body so as to be inclined at a predetermined angle with respect to a direction in which the air or the gas is discharged through the outlet.

A tap hole cleaning apparatus (20) for an electric arc furnace and a corresponding electric arc furnace (1) enable the cleaning of a tap hole (12) of an electric arc furnace (1) comprising a furnace vessel (2) having an eccentric or offset bottom tap hole (12). A lance head (24) is movable in a first step from a lower end position to an upper end position into and through the tap hole (12), and in a second step, the lance head (24) is movable back through the tap hole (12) from the upper end position to the lower end position while ejecting oxygen through one or more lateral oxygen ejection nozzles to clean the inner periphery of the tap hole (12).

With a method for detecting variables in an outlet of a metallurgical vessel, different variables in the outlet are detected or measured by at least one coil surrounding the outlet channel and/or an induction coil of an induction heater as a monitoring system, wherein the variables relate to the slag portion when pouring out the metal melt, wear condition of refractory parts in the outlet channel, the solidified metal melt, flow rate and/or plugging mass in the outlet channel. After evaluation, a closure element for the outlet is actuated, heating of the metal in the outlet channel is activated and/or renewal of the outlet channel is triggered. In this way, optimum operation in the pouring of metal melt out of a vessel is simply achieved, wherein occurrence of irregularities are detected during the entire pouring, and pouring out of slag can be successfully prevented at the end of the pouring.

A melting furnace for metallurgical plant comprising a vessel provided with a bottom; a tapping duct passing through the bottom; rotation means to rotate the vessel so that the tapping duct passes from a first reference position to a second position inclined with respect to said first reference position, and vice versa; wherein said tapping duct has a first stretch arranged in the thickness of the bottom and completely passing through the bottom, and a second stretch, adjacent to the first stretch, protruding inside the vessel; wherein there is provided a cover of the second stretch shaped as a tube closed at an upper end thereof and open at a lower end thereof; said tube being coaxial and spaced from said second stretch, and being spaced from a zone of the bottom which includes the first stretch of the tapping duct, whereby the cover, in cooperation with the second stretch of the tapping duct, acts as a tapping hood.

The present invention relates to delivering sand to a metal melting furnace to fill a tap hole. The swiveling sander moves into position through a horizontal arcing movement. The Swiveling Sanding Systems comprises a swiveling sander with slag plunger. The Swiveling Sander swivels from a home position into a sanding position in order to add sand to a metal melting furnace at the same time as the slag plunger moves out of the way. After delivering sand, the swiveling sander swivels back to home position while the slag plunger also moves back to home position followed by the plunger clearing any slag.

Apparatus for the production of metal including a furnace for melting metal provided with a crucible inside which a metal charge is melted. The furnace provides for tapping a liquid metal disposed on the bottom of the crucible and includes a tapping channel for the transfer of the liquid metal from the furnace. The apparatus also includes a delivery unit for delivering inert material (S) having a delivery device for the selective delivery of the inert material (S) into the tapping channel.

The present invention provides an electric furnace including: a cylindrical furnace wall; a furnace cover that is provided at an upper end of the furnace wall; and a furnace bottom that is provided at a lower end of the furnace wall and includes a deep bottom portion and a shallow bottom portion as a region having a height of 150 mm to 500 mm from a deepest point of the deep bottom portion, in which a slag pouring port into which molten slag or a solidified slag lump is capable of being poured from a slag transport container directly or through a tilting trough is provided, the slag pouring port overlaps the shallow bottom portion in a plan view, and the area ratio of the shallow bottom portion to the furnace bottom in a plan view is 5% to 40%.

With a method for detecting variables in an outlet of a metallurgical vessel, different variables in the outlet are detected or measured by at least one coil surrounding the outlet channel and/or an induction coil of an induction heater as a monitoring system, wherein the variables relate to the slag portion when pouring out the metal melt, wear condition of refractory parts in the outlet channel, the solidified metal melt, flow rate and/or plugging mass in the outlet channel. After evaluation, a closure element for the outlet is actuated, heating of the metal in the outlet channel is activated and/or renewal of the outlet channel is triggered. In this way, optimum operation in the pouring of metal melt out of a vessel is simply achieved, wherein occurrence of irregularities are detected during the entire pouring, and pouring out of slag can be successfully prevented at the end of the pouring.