Method for leaching vanadium by anode electrolysis in strong alkali electrolyte solution

A technology of strong alkali electrolyte and anode electrolysis, which is applied in the field of leaching vanadium from vanadium iron spinel minerals by electrolysis, which can solve the problems of increasing production costs, increasing production costs, increasing energy consumption, etc., and achieves pollution reduction and convenient operation , to handle the effect of easy
CN110042233AInactive Publication Date: 2019-07-23UNIV OF SCI & TECH BEIJING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
UNIV OF SCI & TECH BEIJING
Publication Date
2019-07-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention belongs to the field of leaching vanadium from ferrovanadium spinel minerals by an electrolysis method, and particularly relates to a method for leaching vanadium by anode electrolysis in a strong alkali electrolyte solution. The method comprises the following steps of preparing ferrovanadium spinel type vanadium-containing concentrate into a soluble anode and directly electrolyzingin the strong alkali electrolyte solution to obtain vanadium-containing leachate. In the method, iron contained in the anode is oxidized into ferrate ions which enter the solution, and the ferrate ions further promote the oxidation and leaching of vanadium in the vanadium-containing concentrate, and at the same time, pollution-free oxygen is precipitated on the anode surface. In addition, the ferrate ions entering the electrolyte solution are reduced by water and hydrogen generated by a cathode to form ferric oxide or / and ferric hydroxide precipitate, so that vanadium and iron are separated from the solution. The method electrolyzes the ferrovanadium spinel type vanadium-containing concentrate at normal temperature and pressure without adding any oxidant by utilizing the conductivity of ferrovanadium spinel and ferrate ions with the strong oxidizing property generated by electrolysis.
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Description

technical field

[0001] The invention belongs to the field of leaching vanadium from vanadium-iron-spinel type minerals by electrolysis, and in particular relates to a method for anode electrolytic leaching of vanadium in a strong alkali electrolyte solution. Background technique

[0002] Vanadium is an important alloying element. Vanadium-containing steel has excellent characteristics such as high strength, high toughness, and good wear resistance. It is widely used in machinery, aviation, electronic technology, and national defense industries. Among other things, vanadium is used in the production of rechargeable hydrogen batteries or vanadium redox batteries. And vanadium-containing superconducting materials have also received extensive attention because of their excellent performance.

[0003] At present, the sources of vanadium are mainly vanadium-titanium magnetite and vanadium-containing stone coal. The vanadium-titanium magnetite is smelted in a blast furnace and en...

Claims

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