Semi-continuous metallothermic reduction process

A metal thermal and semi-continuous technology, applied in the field of vacuum smelting reduction tanks for smelting metal magnesium or calcium, can solve the problems of low production efficiency and poor continuity, and achieve the effects of improving production efficiency, saving energy and shortening the reduction time

Inactive Publication Date: 2008-10-22
辛卫亚
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0010] Aiming at the deficiencies of the prior art, the object of the present invention is to provide a semi-continuous metallothermic reduction method to solve the problems of poor continuity and low production efficiency in traditional metal vacuum smelting

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  • Semi-continuous metallothermic reduction process
  • Semi-continuous metallothermic reduction process
  • Semi-continuous metallothermic reduction process

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Embodiment Construction

[0041] In order to better understand the structure and features of the present invention, the present invention will be described in detail below in combination with preferred embodiments and accompanying drawings. In order to make the structure of the present invention clearer, the actual scale relationship of the drawings may be changed during the drawing process, which should not be construed as a limitation to the patent application.

[0042] As shown in Figure 1, it is a schematic structural view of the semi-continuous metallothermic reduction method of the present invention, including a reduction furnace 1, a reduction tank 4, a liquid crystallizer 8 and a liquid tundish 20, wherein:

[0043] The reduction furnace 1 adopts regenerative combustion technology, and is equipped with a furnace body 3 and a burner 2, both of which are prior art and will not be described in detail.

[0044] The reduction tank 4 is vertically arranged in the furnace body 3 of the reduction furna...

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Abstract

The invention provides a method for semi continuous metallothermic reduction. In the method, a reduction pot is communicated with a liquid crystallizer arranged outside the reduction pot by a diversion device, therefore metal steams in the reduction pot enter the liquid crystallizer through the diversion device and are converted to liquid state and kept as the liquid state; liquid metal in the liquid crystallizer periodically and quantificationally flows into liquid pouring baskets; when a liquid pouring basket is filled up, another liquid pouring basket replaces the original liquid pouring basket to connect the liquid crystallizer so as to continuously collecting the liquid metal in the liquid crystallizer; after complete separation of the metal in the reduction pot, slag is removed, and new palletized feed stock is put in the reduction pot for starting a new reduction. The method has the advantages of realizing the semi continuous production of metal vacuum metallurgy, improving production efficiency and lowering production cost.

Description

technical field [0001] The invention relates to a metal vacuum smelting reduction tank, in particular to a vacuum smelting reduction tank for smelting metal magnesium or calcium. Background technique [0002] Some alkali metals and alkaline earth metals with high vapor pressure, such as chromium, chromium, magnesium, calcium, etc., can be prepared by metallothermic reduction of silicon, aluminum or their alloys under vacuum conditions. Among the metallothermal reduction preparation methods of magnesium, the silicothermal or aluminothermic metalthermal reduction principles are most widely used, but the reducing agent is mostly used in the form of ferrosilicon alloy, and the raw material to be reduced is mostly calcined dolomite. A wrought product of a mixture of magnesite and limestone can also be used. The use of ferrosilicon reducing agent, known as silicothermal magnesium smelting, is the most widely used. [0003] According to the different heating methods, the current ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B5/16C22B26/20
Inventor 辛卫亚唐贤军李文胜
Owner 辛卫亚
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