Preparation method of anode for producing metallic titanium by electrolysis

A metal titanium and anode technology, applied in the direction of electrodes, electrolysis process, electrolysis components, etc., can solve the problems of slow anode dissolution, low current efficiency, high anode density, etc. low rate effect

Inactive Publication Date: 2015-03-25
GUIZHOU BRANCH CHINA ALUMINUM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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 i

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0018] Example 1

[0019] Titanium dioxide and graphite powder with a molar ratio of 1:1 are used as basic raw materials, and pitch with an average particle size of 0.05 mm is added. Pure water with a total mass of 200% of the basic raw material of the anode is ball-milled with a planetary ball mill for 4 hours and mixed, dried at 80°C for 24 hours, and the obtained dry powder is sieved, and then hydroformed in a mold with a pressure of 100kN. ℃ drying for 30 hours, then heating at room temperature to 800 ℃ for 12 hours, and then raising the temperature to 1600 ℃ for 4 hours and sintering to prepare a titanium oxide carbon composite anode.

Example Embodiment

[0020] Example 2

[0021] Titanium dioxide and graphite powder with a molar ratio of 3:2 are used as the basic raw materials, and pitch with an average particle size of 0.18mm is added in an amount of 35% of the total mass of the basic raw materials for the anode, and 20% of the total mass of the basic raw materials for the anode is added. Pure water with a total mass of 150% of the basic raw materials is mixed with a planetary ball mill for 4 hours, dried at 80°C for 24 hours, and the obtained dry powder is sieved, hydroformed in a mold with a pressure of 80kN and then heated at 120°C Dry it for 24 hours, then raise the temperature from room temperature to 800° C. for 10 hours, then raise the temperature to 1500° C. and sinter for 5 hours to prepare a titanium oxide carbon composite anode.

Example Embodiment

[0022] Example 3

[0023] Titanium dioxide and graphite powder with a molar ratio of 1:3 are used as the basic raw materials, and pitch with an average particle size of 0.018mm is added in an amount of 5% of the total mass of the basic raw materials for the anode, and 2% of the total mass of the basic raw materials for the anode is added. Pure water with a total mass of 150% of the basic raw materials is mixed with a planetary ball mill for 4 hours, dried at 80°C for 24 hours, and the obtained dry powder is sieved, hydroformed in a mold with a pressure of 150kN and then heated at 120°C Dry it for 24 hours, then raise the temperature from room temperature to 800° C. for 10 hours, then raise the temperature to 1800° C. and sinter for 5 hours to prepare a titanium oxide carbon composite anode.

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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...

Claims

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Application Information

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IPC IPC(8): C25C3/28
CPCC25C3/28C25C7/025
Inventor 颜恒维杨建红孙凤娟王芳平穆天柱王成智
Owner GUIZHOU BRANCH CHINA ALUMINUM IND
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