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Method for extracting vanadium by using ore pulp electrolysis

A technology of slurry electrolysis and anode electrolysis, which is applied in the field of vanadium extraction, and achieves the effects of simple process flow, improved vanadium extraction efficiency and product quality, and low pollution vanadium extraction.

Inactive Publication Date: 2021-07-13
PANZHIHUA UNIV
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Problems solved by technology

However, it is aimed at vanadium-containing stone coal mines, not vanadium-containing solid waste, because vanadium-containing solid waste contains a large amount of impurities such as ammonium ions

Method used

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  • Method for extracting vanadium by using ore pulp electrolysis

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Embodiment 1

[0038] Such as figure 1 As shown, the pretreatment process is divided into two stages of grinding and screening, and finally the particle size of vanadium-containing solid waste is 0-5mm. The waste vanadium catalyst obtained by pretreatment contains vanadium solid waste, the main component is V 2 o 5 The percentage content is 5.2%, Na 2 SO 4 The percentage content is 68.0%, (NH 4 ) 2 SO 4 The percentage content is 20.2%, NH 4 The percentage content of Cl is 3.2% and the concentration is 0.4mol / L HCl solution is mixed according to the mass ratio of 1:6, and then sent to the anode of the electrolytic cell. The separator used is a nafion film, and the electrodes of the cathode and anode are graphite. The electrolyte is NaCl, adjust the temperature of the electrolytic cell to 40°C, start the agitator in the anode electrolytic cell, control the rotation speed at 220r / min, and power on for electrolysis. During the electrolysis process, add HCl solution to the cathode, adjust...

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Abstract

The invention relates to a method for extracting vanadium by using ore pulp electrolysis, and belongs to the technical field of vanadium extraction. The method for extracting vanadium by using ore pulp electrolysis comprises the following steps: A, pretreatment: namely, drying vanadium-containing solid waste, grinding the dried vanadium-containing solid waste into powder, carrying out screening, and selecting vanadium-containing solid waste with the particle size of 0-5 mm, wherein the vanadium-containing solid waste is a waste vanadium catalyst; and B, uniformly mixing the vanadium-containing solid waste screened in the step A with an HCl solution with the concentration of 0.2-0.6 mol / L according to the mass ratio of 1: (5-9), then conveying the mixture to an anode electrolytic cell, and adjusting the temperature to 35-45 DEG C for electrolysis, wherein the pH value is maintained at 1-2 in the electrolysis process, and metal vanadium is continuously recycled from a cathode. With the method for extracting vanadium by using ore pulp electrolysis, vanadium-containing solid waste containing a large amount of ammonium ions and other impurities can be electrolyzed, the vanadium extraction efficiency is high, and thus the vanadium resource value is maximized.

Description

technical field [0001] The invention relates to a method for extracting vanadium by electrolysis of ore pulp, and belongs to the technical field of vanadium extraction. Background technique [0002] Vanadium has many excellent physical and chemical properties, so vanadium has a wide range of uses and is known as the metal "vitamin". The initial vanadium is mostly used in steel, by refining the structure and grain of steel, increasing the grain coarsening temperature, thereby increasing the strength, toughness and wear resistance of steel. Later, people gradually discovered the excellent improvement effect of vanadium in titanium alloy, and applied it to the aerospace field, which made breakthrough progress in the aerospace industry. With the rapid development of science and technology, human requirements for new materials are increasing day by day. The application of vanadium in non-steel fields is more and more extensive, and its scope covers aerospace, chemistry, batteri...

Claims

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Application Information

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IPC IPC(8): C25C1/06
CPCC25C1/06Y02P10/20
Inventor 万宁张士举费之奎陈应东徐玲俐王雪梅邓玉芳
Owner PANZHIHUA UNIV
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