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A continuous centrifugal electrochemical reaction device and its operation method and application

A technology of electrochemical reaction and centrifugal pump, which is applied in the field of electrochemical reaction, can solve the problems of slow progress in the industrialization of the new centrifugal enhanced electrochemical method, and achieve the effects of industrial upgrading, accelerated rate and efficiency, and enhanced mass transfer of metal ions

Inactive Publication Date: 2019-03-22
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the defects in the design of existing experimental devices and many difficulties in industrial scale-up have led to slow progress in the industrialization of the new method of centrifugal enhanced electrochemistry

Method used

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  • A continuous centrifugal electrochemical reaction device and its operation method and application

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Continuous centrifugal electrochemical reaction device see figure 1 , the upper electrode 5 is fixed on the bottom of the electrolytic cell cover 4 through a hard copper wire, and the electrolytic cell cover 4 is a detachable structure; the lower electrode 10 is fixed on the bottom of the electrolytic cell body 8 through a hard copper wire; Fasteners are equidistantly fixed on the rotating shaft 2, and the middle electrode 7 and the upper and lower end electrodes 5, 10 form a disk electrode group.

[0043] The motor 1 drives the rotating shaft 2 to rotate. The display and adjustment of the rotating speed of the rotating shaft 2 are controlled by the motor controller 21. The rotating shaft 2 drives the high-speed rotation of the middle electrode 7 to form a centrifugal field at the interface micro-area between the electrode and the solution. The intensity of the centrifugal field is controlled by the motor 1. Speed ​​regulation.

[0044] The positive and negative poles ...

Embodiment 2

[0048] The electrolytic cell of the continuous centrifugal electrochemical reaction device is made of polytetrafluoroethylene, the inner diameter is 300mm, the height is 400mm, the number of intermediate electrode sheets is 3, the diameter of the electrode plate is 200mm, the electrode spacing is 50mm, and the electrode is single-sided A titanium electrode with a noble metal coating, the side with the coating is the anode, and the side without the coating is the cathode. Turn on the centrifugal pump 15 before electrolysis to input the raw electrolytic solution into the reaction device. When the device is filled with electrolyte, turn on the motor 1 to rotate to drive the rotation of the intermediate electrode 7, adjust the rotation speed of the rotating shaft 2, and turn on the rectifier 18 at the same time to perform electrochemical reactions. It flows out from the overflow port 20 at the upper part of the shell, and the powdery electrolytic product is discharged from the disc...

Embodiment 3

[0050] Using the same device and operation method as in Example 2, for a 5g / L copper-containing solution, when the rotating shaft does not rotate, the current efficiency of the electrolytic copper is 32.1%, and the recovery rate of copper in the solution is 43%.

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Abstract

The invention provides a continuous-type centrifugal electrochemical reaction device and an operating method and application thereof. The device comprises an electrolytic bath; a detachable electrolytic bath cover is arrange at the top of the electrolytic bath, and the top end of a rotary shaft is connected with an electric motor; the lower end of the rotary shaft sequentially penetrates through through holes of the electrolytic bath cover, an upper end electrode and a lower end electrode to stretch into the bottom of the electrolytic bath, and the electrolytic bath is internally provided with a disk electrode assembly which comprises the upper end electrode, a middle electrode and the lower end electrode; a powder scraping brush is fixedly arranged on the rotary shaft, and the electrolytic bath is externally provided with a rectifier; an electrolytic useless solution output unit is arranged on the upper portion of the electrolytic bath, and an electrolytic stock solution input unit is arranged on the lower portion of the electrolytic bath; and a discharging port is formed in the bottom of the electrolytic bath. According to the continuous-type centrifugal electrochemical reaction device, an electric conduction slipping ring is not needed, accurate transmission of a large current can be achieved, an electrolyte can be continuously circulated, electrolytic products can be continuously collected in an on-line mode, and demands of centrifugal electrochemical industrialized application are met.

Description

technical field [0001] The invention belongs to the technical field of electrochemical reaction, and relates to a continuous centrifugal electrochemical reaction device and its operation method and application. Background technique [0002] Electrochemical metallurgy has become a common method for extracting metals from bulk mineral resources because of its advantages of no need to add chemical reducing agents, less pollution, and less harm to the environment. However, in the metallurgical electrochemical reaction process, the ion mass transfer step is often a controlling step, which will cause serious concentration polarization, resulting in a decrease in the efficiency and rate of the electrochemical reaction, and an increase in electrolysis energy consumption, which greatly limits the reaction potential of the electrode surface. limits. [0003] Centrifugal acceleration can enhance the liquid-phase mass transfer in the electrochemical reaction process and effectively red...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25C7/00C25C5/02C25C1/12C02F1/461C02F101/20C02F101/30
CPCC02F1/46104C02F2101/20C02F2101/30C25C1/12C25C5/02C25C7/00Y02P10/20
Inventor 王明涌安康王志公旭中
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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