Method and device for continuously preparing high-purity titanium through oxide fusion electrolysis-vacuum rectification

Abstract

The invention relates to a method and device for continuously preparing high-purity titanium through oxide fusion electrolysis-vacuum rectification, and belongs to the field of electrochemical metallurgy and vacuum metallurgy. The process comprises the following steps of adding a metal or alloy cathode and a titanium-containing oxidation slag electrolyte into an electrolytic furnace, and using aninert electrode or graphite as an anode; carrying out electrolyzation under a high-temperature condition, feeding the titanium-containing alloy obtained through electrolysis into a rectification furnace for rectification, and separating the titanium from the metal or alloy cathode; and enabling the metal or alloy cathode to return to the rectification furnace to realize circulation through evaporation. According to the method and the device, it is realized that the high-purity titanium is continuously prepared through oxide fusion electrolysis-vacuum rectification by controlling the rectification furnace and the electrolytic furnace in the whole operation process, the method and the device accord with green metallurgy requirements, utilize an electrochemical metallurgy and vacuum metallurgy principle to continuously and comprehensively recover metallurgical secondary resources, and have the advantages of being low in energy consumption, simple to operate, short in flow and the like.

Description

technical field

[0001] The invention relates to a method and equipment for continuous preparation of high-purity titanium by oxide melting electrolysis-vacuum rectification, belonging to the fields of electrochemical metallurgy and vacuum metallurgy. Background technique

[0002] Due to its high specific strength, corrosion resistance and good biocompatibility, titanium is considered as a future metal and is widely used in aerospace, petrochemical, nuclear power, ships, submarines and biomedicine. It accounts for about 0.42% in the earth's crust, which is 16 times the total amount of copper, nickel, lead, and zinc. However, most titanium-containing minerals are composite ores, which are difficult to directly smelt. At present, the Kroll method is the main industrial production method of titanium. While producing titanium, this method has high requirements for intermediates such as titanium tetrachloride and magnesium, and has strict requirements for the airtightness and pre...

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