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Device for extracting zinc by electrodeposition with double electrolytic baths and application of device

A double electrolytic tank, electrowinning technology, applied in the direction of electrolysis process, electrolysis components, electrodes, etc., can solve the problem that it is difficult to avoid the generation of acid mist, and achieve the effect of solving the problem of acid mist, low concentration of sulfuric acid, and reducing remelting

Active Publication Date: 2017-10-20
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the generation of acid mist has been improved by this method, it is difficult to avoid the generation of acid mist

Method used

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  • Device for extracting zinc by electrodeposition with double electrolytic baths and application of device
  • Device for extracting zinc by electrodeposition with double electrolytic baths and application of device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The device for electrowinning zinc with double electrolytic cells includes an inert anode 1, a pure aluminum cathode 2, an auxiliary electrode I3, an auxiliary electrode II4, an anode tank 5, a cathode tank 6, a sulfuric acid-containing electrolyte solution 7 and a zinc sulfate-containing electrolyte solution 8, An inert anode 1 and an electrolyte 7 containing sulfuric acid are housed in the anode tank 5, an aluminum cathode 2 and an electrolyte 8 containing zinc sulfate are housed in the cathode tank 6, the inert anode 1 is connected to the positive pole of the power supply, and the pure aluminum cathode 2 is connected to the negative pole of the power supply. An auxiliary electrode I3 and an auxiliary electrode II4 are respectively provided in the anode tank 5 and the cathode tank 6 , and the auxiliary electrode I3 and the auxiliary electrode II4 are connected by a wire 9 .

[0032] (1) Preparation of auxiliary electrodes

[0033] Take 5g of lead powder (200 mesh, 3N)...

Embodiment 2

[0040] The device for electrowinning zinc with double electrolytic cells includes an inert anode 1, a pure aluminum cathode 2, an auxiliary electrode I3, an auxiliary electrode II4, an anode tank 5, a cathode tank 6, a sulfuric acid-containing electrolyte solution 7 and a zinc sulfate-containing electrolyte solution 8, An inert anode 1 and an electrolyte 7 containing sulfuric acid are housed in the anode tank 5, an aluminum cathode 2 and an electrolyte 8 containing zinc sulfate are housed in the cathode tank 6, the inert anode 1 is connected to the positive pole of the power supply, and the pure aluminum cathode 2 is connected to the negative pole of the power supply. An auxiliary electrode I3 and an auxiliary electrode II4 are respectively provided in the anode tank 5 and the cathode tank 6 , and the auxiliary electrode I3 and the auxiliary electrode II4 are connected by a wire 9 .

[0041] (1) Preparation of auxiliary electrodes

[0042] Take 5g of lead powder (200 mesh, 3N)...

Embodiment 3

[0046] The device for electrowinning zinc with double electrolytic cells includes an inert anode 1, a zinc cathode 2, an auxiliary electrode I3, an auxiliary electrode II4, an anode tank 5, a cathode tank 6, a sulfuric acid-containing electrolyte solution 7 and a zinc sulfate-containing electrolyte solution 8, and the anode Tank 5 is equipped with inert anode 1 and electrolyte 7 containing sulfuric acid, and cathode tank 6 is equipped with zinc cathode 2 and electrolyte 8 containing zinc sulfate. The inert anode 1 is connected to the positive pole of the power supply, and the zinc cathode 2 is connected to the negative pole of the power supply. Auxiliary electrode I3 and auxiliary electrode II4 are also provided in 5 and cathode tank 6 respectively, and auxiliary electrode I3 and auxiliary electrode II4 are connected by wire 9 .

[0047] (1) Preparation of auxiliary electrodes

[0048] Take 5g of spongy metal lead powder (3N), 1.0% of lead mass barium sulfate, 0.5% of lead mas...

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Abstract

The invention relates to a device for extracting zinc by electrodeposition with double electrolytic baths and application of the device, and belongs to the technical field of wet metallurgy. The device comprises an inert anode, a pure aluminum or zinc cathode, an auxiliary electrode I, an auxiliary electrode II, an anode bath, a cathode bath, sulfur-acid-containing electrolyte and zinc-sulfate-containing electrolyte, wherein the inert anode and the sulfur-acid-containing electrolyte are arranged in the anode bath; the aluminum or zinc cathode and the zinc-sulfate-containing electrolyte are arranged in the cathode bath; the inert anode is connected with the positive pole of a power supply; the pure aluminum or zinc cathode is connected with the positive pole of the power supply; the auxiliary electrode I and the auxiliary electrode II are respectively arranged in the anode bath and the cathode bath; and the auxiliary electrode I is connected with the auxiliary electrode II through a wire. The double electrolytic baths are used in the device, and decoupling of a metal zinc electrodeposition extracting process and a cathode and anode reaction process is realized, namely, cathode deposition and anode oxygen evolution of metal zinc are separately implemented in the different electrolytic baths.

Description

technical field [0001] The invention relates to a device for extracting zinc by electrowinning with double electrolytic cells and its application, which belongs to the technical field of hydrometallurgy. Background technique [0002] Modern zinc smelting methods are divided into hydro-method zinc smelting and pyro-method zinc smelting. Due to the advantages of wide resource sources, environmental friendliness and low energy consumption, hydro-method zinc production accounts for more than 80% of the total zinc. The conventional hydrometallurgy process of concentrate is roasting → leaching → purification → electrowinning → high-purity zinc. Zinc electrowinning uses a lead-based alloy as the anode, a rolled pure aluminum plate as the cathode, and the purified zinc sulfate / sulfuric acid solution as the electrolyte. Under the action of an electric field, zinc is precipitated at the cathode, and the acidity of the electrolyte increases at the same time. At present, in industrial z...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/16C25C7/02
CPCC25C1/16C25C7/02Y02P10/20
Inventor 杨长江沈庆峰翟大成
Owner KUNMING UNIV OF SCI & TECH
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