Preparation method of anode for producing metallic titanium by electrolysis

Abstract

The invention provides a preparation method of an anode for producing metallic titanium by electrolysis, and relates to a preparation method of a titanium-oxygen-carbon porous anode for producing the metallic titanium by the electrolysis in alkaline-earth metal halide fused salt. The preparation method is characterized in that the preparation process comprises the following steps: by taking titanium dioxide and graphite powder as raw materials, and taking asphalt, PVA or paraffin as a binding agent and a pore-forming agent, carrying out pulping, uniformly mixing and drying to obtain dry powder; carrying out mold pressing and molding on the dried powder; and finally, drying and sintering the powder to obtain the titanium-oxygen-carbon porous anode. The preparation method of the anode for producing the metallic titanium by the electrolysis has the advantages that the flow is simple, fewer raw materials are consumed, the porosity of an obtained titanium-oxygen-carbon composite material is relatively great, the dissolving speed of the anode in electrolyte is high, the residual anode rate after the electrolysis is relatively small, and guarantees are provided for industrial production of electrolyzed titanium. The method provided by the invention can be used for finishing a primary formation process of electrolyzing the titanium composite anode by adopting a simple technological process, and an industrialized progress of directly electrolyzing the titanium is accelerated.

Description

technical field [0001] The invention relates to a preparation method of an anode for producing metal titanium by electrolysis, and relates to a preparation method of a titanium oxycarbon porous anode for producing metal titanium by electrolysis in alkaline earth metal halide molten salt. Background technique [0002] Titanium is one of the important rare metal materials because of its low density, high specific strength, heat resistance, non-magnetic, weldable and many other advantages. It is widely used in aviation, aerospace, petroleum, chemical industry, metallurgy, medical treatment and other fields, especially in aerospace field, titanium metal has become a pivotal material, known as "space metal". my country's titanium resources are very rich, ranking first in the world one. Now most of the world's titanium metal comes from sponge titanium produced by magnesia thermal reduction. Although my country's titanium resources are very rich, the production capacity of sponge t...

AI Technical Summary

Problems solved by technology

Yang Jianhong, Qin Qingdong and others (Chinese patent CN103305875A) studied the specific steps of anode forming process - two sintering molding, although it can meet the needs of electrolysis, but due to the use of two sintering, the cost is high, the process is complicated, and the molding After sintering, the anode density is high, the porosity is low, and there are also problems such as slow anode dissolution rate and low current efficiency during the electrolysis process.