Device for extracting metals or metal compounds from a material containing the metal or the metal compound

A technology of metal compounds and metals, which is applied in the field of devices for obtaining metals or metal compounds, and can solve problems such as heat loss and slag cooling

Inactive Publication Date: 2010-12-01
SMS DEMAG AG
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Cooling of the slag and thus heat loss occurs between the two devices
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Method used

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  • Device for extracting metals or metal compounds from a material containing the metal or the metal compound
  • Device for extracting metals or metal compounds from a material containing the metal or the metal compound

Examples

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Embodiment Construction

[0026] The embodiment comprises a combination of a conventional electric reduction furnace (SAF) of circular or polygonal design, usually operated with alternating current (AC), and a direct current (DC) reduction furnace with anodes and cathodes, giving the DC reduction furnace Supplemented with a permanent or electromagnet oriented transversely to the DC reduction furnace. Thus, in terms of process technology and according to the invention, the furnace combines a known electric reduction furnace and an enhanced slag cleaning furnace in one device.

[0027] Furnaces (intensified slag cleaning furnaces) of this type, denoted 15 , generally have three or six electrodes 1 arranged in rows or on a pitch circle in a circular or polygonal furnace chamber 2 . The medium (slag) 14 is supplied with the energy required for reduction, for melting and for deposition via these electrodes, usually operated with AC. However, the furnace is now configured differently from known furnaces in ...

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PUM

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Abstract

The invention relates to a device for extracting metals or metal compounds from a material containing the metal or the metal compound, with a furnace vessel (2), with a first inlet for supplying the material, a first outlet (10) for discharging exhaust gas, one or more electrodes (1) for melting and/or reducing the material supplied, which protrude into the furnace vessel, with a bottom electrode(5) formed as a cathode, a space (16) provided in the region of the slag tap hole (12) and serving as a settling zone, with an electromagnet or permanent magnet (6), which is placed in the furnace vessel in such a way that a DC current flow produced in the furnace vessel is crossed by the magnetic field, and also a tap hole (8) for removing the molten metal or the metal compound and an overflow or tap hole (12) for the slag.

Description

technical field [0001] The invention relates to a device for obtaining metals or metal compounds from materials containing them. [0002] The field of application of the invention is the purification of slag / slag from ferrous and non-ferrous metal extraction as well as precious metal extraction and improvement of metal yield in slag-based ferroalloy processes. Background technique [0003] Known from EP 1807671 B1 is a device for obtaining metal from metal-containing slag, which has a first furnace as an AC furnace and a second furnace as a DC furnace, wherein between the first furnace and the second furnace Connecting elements are provided for the melt, so that the melt can be brought into the second furnace after being heated in the first furnace. [0004] Enhanced slag cleaning by DC techniques using one or more electrodes and a bottom electrode and a transversely oriented magnetic field has been proposed. Round or rectangular electric reduction furnaces are proven stan...

Claims

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Application Information

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IPC IPC(8): F27B3/08C21C5/52
CPCC21C5/5247C21C5/5229C21C5/5252F27B3/085
Inventor R·科尼格R·德格尔J·孔泽H·J·奥特杜姆A·瓦尔措克
Owner SMS DEMAG AG
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