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Pretreatment method and device of hydrometallurgy electrolysis additive

A pretreatment device and hydrometallurgy technology, applied in electrolysis components, electrolysis process and other directions, can solve the problems of large amount of additives, new impurities introduced in electrolysis power consumption, poor effect, etc.

Pending Publication Date: 2020-10-23
KUNMING METALLURGY COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the problems of large amount of additives, poor effect, introduction of new impurities, high electrolysis power consumption, and poor product quality caused by the traditional addition of hydrometallurgical electrolytic additives

Method used

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  • Pretreatment method and device of hydrometallurgy electrolysis additive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The new liquid and the waste liquid are used together, wherein the acid concentration of the new liquid is 163g / L, and the zinc concentration is 54g / L; the acid concentration of the waste liquid is 168g / L, and the zinc concentration is 50g / L. In the experiment, 20L of 1:1 new and old zinc sulfate solution was used as the electrolyte, a 20cm×15cm lead-silver alloy plate was used as the anode plate, and a 20.5cm×15.5cm rolled aluminum plate was used as the cathode plate, and the current density during electrolysis was controlled at 400A / m 2, the pole distance is 35mm, the cell voltage is 3.1V, and the temperature during electrolysis is controlled at 38°C. During the 24h electrolysis cycle, add EDTA30mg, SrCO 3 1500mg, gelatin 150mg, compare the effects of different addition methods on the current efficiency and cathode quality.

[0041] Zinc electrolysis current efficiency Zn Pb Fe Cd Cu Traditional way to add 89.92％ 99.855％ 0.026％ 0.078％ ...

Embodiment 2

[0043] In the experiment, 20L copper sulfate solution was used as the electrolyte, and Cu in the electrolyte 2+ 49g / L, H 2 SO 4 188g / L. During electrolytic refining, a thick copper plate with a size of 20cm×15cm is used as an anode, and a stainless steel plate with a size of 20.5cm×15.5cm is used as a cathode. Control the cathode current density to 300A / m 2 , the pole distance is 45mm, the cell voltage is 0.3V, and the electrolysis temperature is 60°C. During the electrolysis period of 24 hours, 12mg of animal glue, 10mg of thiourea, 10mg of casein, and hydrochloric acid are added to the electrolyte according to the traditional method and the pretreatment method respectively. 0.2ml, to compare the effects of different addition methods on the current efficiency and cathode quality.

[0044] copper electrolysis current efficiency Cu Pb Bi As S Traditional way to add 92.75％ 99.92％ 0.007％ 0.0015％ 0.002％ 0.005％ Added after preprocessing 97....

Embodiment 3

[0046] In the experiment, 20L lead fluorosilicate solution was used as the electrolyte, Pb 2+ Concentration 100g / L, free fluorosilicic acid (H 2 SiF 6 ) 100g / L. During electrolytic refining, crude lead with a size of 20cm×15cm is used as an anode, and a pure lead cathode with a size of 20.5cm×15.5cm is used. Control the cathode current density to 200A / m 2 , the pole distance is 40mm, the cell voltage is 0.4V, and the electrolysis temperature is 40°C. During the 24h electrolysis cycle, add 180mg of bone glue, 180mg of sodium lignosulfonate, and β-naphthol to the electrolyte according to the traditional method and pretreatment method respectively. 5mg, to compare the effects of different addition methods on the current efficiency and cathode quality.

[0047] lead electrolysis current efficiency Pb Ag Cu As Bi sn Traditional way to add 92.75％ 99.95％ 0.0043％ 0.003％ 0.0025％ 0.0086％ 0.005％ Added after preprocessing 97.13％ 99.99％ 0.000...

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Abstract

The invention discloses a pretreatment method and device of a hydrometallurgy electrolysis additive. The method comprises the steps of weighing, new electrolyte thermal solution, organic phase separation, filtration, scattering or emulsification and the like. The pretreated electrolysis additive is obtained. According to the pretreatment method and device of the hydrometallurgy electrolysis additive, the electrolysis additive is pretreated, the electrolysis additive is dissolved and filtered, and the qualified electrolysis additive cannot be obtained until mechanical agitation and ultrasonic scattering or emulsification are carried out; when an additive is added into an electrolyte, the dosage of the additive is large, the effect is poor, new impurities are brought into the electrolyte, and so on, and with the method and device, the problems are solved; and the problems such as high power consumption of electrolysis and poor quality of products are solved, the application effect of theadditive in the electrolysis process is effectively improved, the cathode product quality is improved, the current efficiency is improved, and the power consumption is reduced.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgy electrolysis, and in particular relates to a pretreatment method and device for hydrometallurgy electrolysis additives. Background technique [0002] Electrolytic additives refer to a small amount of additives added to the electrolyte to improve the electrochemical performance of the electrolyte and improve the quality of cathode deposition. Electrolyte additives are some natural or synthetic organic or inorganic compounds, generally do not participate in the electrode reaction of the electrolysis process, but can improve the electrochemical performance of the electrolyte system, affect the discharge conditions of ions, and make the electrolysis process in a better state. The amount of electrolyte additives is generally small, but it is an indispensable part of the electrolyte system. [0003] In hydrometallurgy, the electrolysis process is the most critical step in the production of zinc...

Claims

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Application Information

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IPC IPC(8): C25C7/06
CPCC25C7/06
Inventor 李永佳雷霆杨志鸿刘捷
Owner KUNMING METALLURGY COLLEGE
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