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Noncontact type metal element carbon-hot-melt reduction method

A metal element, non-contact technology, applied in the field of metallurgical materials, can solve problems such as solid electrolyte erosion, aggravation of air pollution, reduction product pollution, etc., and achieve the effects of stable oxygen partial pressure, shortened metallurgical process, and high activity

Inactive Publication Date: 2006-03-15
UNIV OF SCI & TECH BEIJING
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Problems solved by technology

[0004] The purpose of the present invention is to find out a method that also uses oxygen ion conduction solid electrolyte, but the reducing agent uses primary resources to reduce the method to obtain pure metal or low-priced compound, so as to solve the problem of waste of resources and aggravate the pollution of the atmosphere. The solid electrolyte is affected by slag The problem of erosion, and the problem of "contamination" of the reduction product by the reducing agent caused by the traditional contact reduction

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  • Noncontact type metal element carbon-hot-melt reduction method
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  • Noncontact type metal element carbon-hot-melt reduction method

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Embodiment Construction

[0019] A non-contact carbothermal fusion reduction method of Fe and FeO, which consists of oxygen ion conductive solid electrolyte, Fe-C melt, slag containing FeO and electrochemical controller to form a concentration battery, Fe-C melt It is separated from the FeO-containing slag on both sides of the solid electrolyte, and the electrochemical reduction is performed by the oxygen potential difference on both sides, and a metal "protective isolation layer" is set between the slag and the solid electrolyte. Fe-C melt can be produced from coal and Fe, which can provide lower oxygen partial pressure and higher activity of dissolved carbon; the reduced FeO is dissociated into Fe in the slag 2+ and O 2- ; The solid electrolyte not only plays the role of isolating the reducing agent and the reduced product, but also ensures that the oxygen ion (O 2- ) transmission, relying on the electronic conduction of the external circuit to eliminate the inhibition of the electric field on the c...

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Abstract

A non-contact fusion reduction process for pure metal features that such materials as O ion conducting solid electrolyte, molten metal-C body, molten slag containing the substance to be reduced, the substance to be reduced, and electrodes. The coal is used as reducer. A metallic isolating layer is between molten slag and solid electrolyte. An electrochemical controller is connected between two electrodes. Its advantages are no pollution to target product and environment and high efficiency.

Description

Technical field: [0001] The invention belongs to the field of metallurgical materials, and is particularly suitable for the smelting reduction of pure metals. technical background: [0002] The reduction of metal elements is an important link in metallurgy. It is a process in which metal atoms with positive charges obtain electrons through some means and become free atoms. There are two main types of reduction methods used in traditional production. One is through reducing agents. Provide electrons to the reduced object for reduction, relying on the direct contact between the reducing agent and the reduced object for electron exchange, the reaction speed is fast, but there is a problem of "contamination" of the reduction product by the reducing agent, such as the reduction of carbon in the blast furnace to iron oxide to generate iron At the same time, part of the carbon also enters the molten iron. In order to improve the performance of the steel material, decarburization an...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B5/10
Inventor 郭兴敏高运明周国治
Owner UNIV OF SCI & TECH BEIJING