Industrial production method of titanium-containing soluble solid solution anode

Abstract

The invention relates to an industrial production method of a titanium-containing soluble solid solution anode, and belongs to the technical field of titanium smelting. The industrial production method comprises a melting and stirring step, a casting forming step, a cooling step and a shaping step. According to the industrial production method, titanium-containing soluble solid solution are adopted as raw materials, melting into the liquid state under the conditions that the temperature is higher than the melting point of the raw materials and under the protection of the inert atmosphere, andare fully stirring, then pouring the melt into a mold preheated to be 1000 DEG C or higher for casting forming, cooling under the protection of the inert atmosphere at a certain cooling speed, after the cooled anode is subjected to shaping treatment, and the cooled anode can be directly used for molten salt electrolysis to produce the metal titanium. The industrial production method of the titanium-containing soluble solid solution anode is simple in process, high in efficiency and low in cost, and the produced anode has the advantages of being high in density, good in conductivity, free of defects in the interior and the like. By adopting the anode for industrial production to carry out molten salt electrolysis to prepare the metal titanium, the anode can be stably dissolved for a long time, the anode without slag falling during the electrolysis process, and the electrochemical dissolution efficiency of the anode is 90% or higher.

Description

technical field [0001] The invention relates to the technical field of titanium smelting, in particular to an industrial production method of a titanium-containing soluble solid solution anode. Background technique [0002] Titanium metal has excellent physical, chemical and mechanical properties. Its density is about 60% of steel, but its specific strength is more than twice that of steel, and titanium metal has a high melting point, corrosion resistance and good biocompatibility, and is widely used in military industry, aerospace, chemical industry, medical treatment Implantation, electronic information and other fields, known as "future metal". Titanium is extremely abundant in the earth's crust (0.44%, ranking 9th among all elements), but the production and sales of titanium are very limited (the global annual output is less than 200,000 tons). At present, the mainstream production process of titanium metal is the Kroll method, that is, the magnesium reduction method. ...

AI Technical Summary

Problems solved by technology

Titanium is extremely rich in reserves in the earth's crust (0.44%, ranking 9th among all elements), but the production and sales of titanium are very limited (the global annual output is less than 200,000 tons)

The biggest problem with this method is: (1) After carbonization of cellulose or pitch additives at high temperature, additional carbon will be brought, which makes it difficult to precisely control the composition of titanium-containing soluble solid solutions; (2) TiO 2 When reacting with carbonaceous reducing agent, a large amount of gas will be released, which will cause many pores inside the anode after sintering, and the prepared anode will have a lower density and a higher resistivity.

Although this kind of anode structure is simple, the biggest problem is that except for anodes made of metal titanium and titanium alloys, anodes made of soluble solid solutions cannot achieve stable dissolution for a long time, because the anode continues to dissolve with electrolysis, and the soluble solid solution particles Good electrical contact cannot be guaranteed continuously, so the cell voltage rises rapidly after 1 to 3 hours of electrolysis and finally breaks the circuit, resulting in the inability to continue the electrolysis process