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Device and method for conducting diffusion dialysis and electrolysis electrodialysis integrated treatment on vanadium-alkali feed liquid in alkali method vanadium extraction process

A technology of electrolytic electrodialysis and diffusion dialysis, which is applied in the field of integrated treatment of diffusion dialysis and electrolytic electrodialysis, can solve the problems of separating vanadium alkali material liquid, blank, and none, and achieve the effect of fast separation speed, simple process and cost saving

Inactive Publication Date: 2016-04-06
HEFEI CHEMJOY POLYMER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application of diffusion dialysis in the vanadium alkali feed solution system is blank.
[0006] Therefore, there is no integrated method of diffusion dialysis and electrolytic electrodialysis to separate the vanadium alkali feed solution in the process of alkaline vanadium extraction.

Method used

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  • Device and method for conducting diffusion dialysis and electrolysis electrodialysis integrated treatment on vanadium-alkali feed liquid in alkali method vanadium extraction process
  • Device and method for conducting diffusion dialysis and electrolysis electrodialysis integrated treatment on vanadium-alkali feed liquid in alkali method vanadium extraction process
  • Device and method for conducting diffusion dialysis and electrolysis electrodialysis integrated treatment on vanadium-alkali feed liquid in alkali method vanadium extraction process

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Experimental program
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Effect test

Embodiment 1

[0033] figure 1 It is a schematic diagram of the diffusion dialysis device used in this example. The diffusion dialysis device is assembled in the following way: PVA series cation exchange membranes (13 sheets) produced by Shandong Tianwei Membrane Technology Co., Ltd. and gaskets with grids are assembled alternately to form 7 repeating units (7 pieces) feed liquid chamber and 7 alkali recovery chambers) membrane stack-DD3, the effective area of ​​each membrane is 69cm 2 , the total effective membrane area is 0.0897m 2 , The thickness of the gasket with grid is 0.8mm. The membrane stack-DD3 is clamped with the DD front splint 25 and the DD rear splint 24 by bolts to form a diffusion dialysis device 1 . The DD feed liquid chamber inlet 16 and the DD feed liquid chamber outlet 17 are respectively connected to the inside of the feed liquid storage tank 5 and the retentate tank 6 through silicone tubes, and the DD alkali recovery chamber inlet 18 and the DD alkali recovery cham...

Embodiment 2

[0040] figure 2 It is a schematic diagram of the electrolytic electrodialysis device used in this example. The electrolytic electrodialysis device is assembled in the following way: a membrane stack-EED2 is formed by using a cation exchange membrane CMV (1 sheet) produced by Asahi Glass Co., Ltd., a gasket and a flow channel grid, and the membrane stack includes an anode chamber and One cathode chamber, the effective area of ​​the membrane is 189cm 2 , The gasket thickness is 0.8mm. The membrane stack-EED4 is clamped by bolts with the EED positive electrode 14 and the EED negative electrode 15 respectively arranged at both ends of the membrane stack, and the EED front splint 26 and EED rear splint 27 arranged at both ends of the electrode to form an electrolytic electrodialysis device 2 . Its EED anode chamber inlet 20 and EED anode chamber outlet 21 are respectively connected to the inside of the anolyte tank 6 through silicone tubes, and the EED cathode chamber inlet 22 a...

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Abstract

The invention discloses a device and method for conducting diffusion dialysis and electrolysis electrodialysis integrated treatment on vanadium alkali feed liquid in the alkali method vanadium extraction process. The device is characterized in that a retentate tank of a diffusion dialysis device is combined with an anode liquor tank of an electrolysis electrodialysis device, a dialysate tank of the diffusion dialysis device is combined with a cathode liquor tank of the electrolysis electrodialysis device, and the device for conducting integrated treatment on the vanadium-alkali feed liquid in the alkali method vanadium extraction process is formed; and primary separation is conducted on vanadium-alkali feed liquid through the diffusion dialysis device in the integrated treatment device, and retentate generated after diffusion dialysis is deeply separated through electrolysis electrodialysis. According to the method, in combination with the diffusion dialysis device which has the advantages of being large in treatment capacity, low in energy consumption, low in film pollution, high in electrolysis electrodialysis zero-vanadium leakage rate and efficiency and the like, the vanadium-alkali feed liquid is treated in the alkali method vanadium extraction process with the lower energy consumption, the concentration of the recycled alkali liquor is high, the former working procedure can be directly executed, vanadium extraction can be conducted again, and circulating use is achieved.

Description

technical field [0001] The invention belongs to the technical field of separation of vanadium-alkaline feed liquid in the process of vanadium extraction by alkaline method, and in particular relates to a method and device for integrated treatment of the feed liquid by diffusion dialysis and electrolysis-electrodialysis. Background technique [0002] In industrial production, the methods for extracting vanadium from vanadium ore mainly include sodium roasting vanadium extraction method, acid leaching vanadium extraction method, calcification roasting vanadium extraction method and solvent extraction vanadium extraction method. Among them, the vanadium extraction method of sodium roasting mainly includes adding salt to pulverize stone coal, roasting, water immersion, sinking crude vanadium, alkali dissolution, preparing ammonium vanadate, and calcination, so as to obtain vanadium pentoxide products with high purity. . The alkali dissolution process in this method has the adva...

Claims

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Application Information

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IPC IPC(8): C25C1/22C25C7/00C22B34/22
CPCC22B34/22C25C1/22C25C7/00Y02P10/20
Inventor 张勤颜海洋汪耀明李为吴亮李传润
Owner HEFEI CHEMJOY POLYMER MATERIALS CO LTD
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