A method for preparing ferroniobium alloy by electrolysis of niobium concentrate molten oxide

A technology of molten oxide and niobium-iron alloy, which is applied in the fields of chemical instruments and methods, magnetic separation, solid separation, etc., can solve the problem that the resources of niobium in Baiyun Obo have not been effectively recycled, the process of hydrometallurgy is complicated, and the impurities do not meet the requirements of smelting. Steel requirements and other issues, to achieve the effect of green metallurgy, lower temperature, and low cost
CN103160863BInactive Publication Date: 2016-01-20SHANGHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI UNIV
Publication Date
2016-01-20
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a method for preparing ferroniobium alloy by electrolysis of niobium concentrate molten oxide, which belongs to the technical field of comprehensive resource utilization and alloy preparation. Firstly, selectivity and magnetic separation of niobium concentrate are carried out to separate the iron in it to obtain a niobium-rich and rare earth mixture, and the molten niobium-rich and rare earth mixture is prepared by electrolysis of molten oxide to prepare ferroniobium alloy. The invention realizes selective reduction of niobium concentrate and magnetic separation and electrolysis of molten oxide to prepare ferroniobium alloy at a temperature below 1650°C, which can significantly reduce the temperature of the reactor and reduce energy consumption; control the content of iron elements in the niobium-rich and rare earth mixture, which can be highly efficient Preparation of intermediate and high-grade ferroniobium alloys with high niobium-iron ratios that are difficult to prepare by hydrometallurgy and pyrometallurgy; controllable preparation of ferroniobium can be realized in the process of high-temperature electrochemical electrolysis, and the process is simple and efficient; the whole process has simple equipment and low cost , can realize continuous production, there is no pollution and carbon dioxide emission in the whole process, and realize green metallurgy.
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Description

technical field

[0001] The invention relates to a method for preparing ferroniobium alloy by electrolysis of niobium concentrate molten oxide, belonging to the technical field of iron and steel metallurgical refining technology. Background technique

[0002] Niobium and niobium compounds have the characteristics of high strength, high hardness, high melting point, and very stable properties, and are widely used in high-tech fields such as steel, aerospace, superconductivity, electronics industry, and electromechanical technology. With the advancement of science and technology, the demand for niobium raw materials in various countries is increasing, and the development and utilization of niobium resources is of great significance.

[0003] Baotou Baiyun Obo iron-rare earth-niobium and other polymetallic symbiotic ore is not only rich in iron and rare earth, but also rich in niobium resources. It is one of the important strategic resources in my country. It is of great academ...

Claims

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