Novel efficient combined additive for zinc electrodeposition

An additive, zinc electrowinning technology, applied in the improvement of process efficiency, photography technology, instruments, etc., to achieve the effect of improving enterprise economic benefits, reducing production energy consumption, and improving the quality of electro-zinc

Active Publication Date: 2017-05-17
SHENYANG RES INST OF NONFERROUS METALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems existing in the prior art. By optimizing the combination of various components of various surface active substances and repeated tests, a new type of high-efficiency combined additive is finally developed, which overcomes the disadvantages of single additives in production and application. Insufficient, and greatly improved the current efficiency and the precipitation quality of the cathode plate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Current density 500A / m 2 , the electrolyte temperature is 35~40°C, the same pole distance is 60mm, the electrolysis cycle is 48h, the new electrolysis solution contains zinc 150g / L, and the pH value is 5~6; the electrolysis waste solution contains zinc 50~55g / L, sulfuric acid 155~165g / L . The cathode plate is a rolled pure aluminum plate, and the anode plate is a lead plate containing 1% silver. The electrolyte adopts the cycle system of top in and bottom out, that is, the waste liquid overflowing from the electrowinning cell is mixed with new liquid in a certain proportion and then reused. Generally, the mixing volume ratio of new liquid and waste liquid is 1:5~1:10. Adding 0.1 g / L bone glue, the current efficiency is 88.48%, and the DC power consumption is about 2966 kwh / t Zn. Under the same conditions, adding a combined additive consisting of 0.1 g / L bone glue, 0.05 g / L aloe gel, and 0.015 g / L cetylpyridinium chloride, the current efficiency is 90.54%, and the DC p...

Embodiment 2

[0015] Current density 550A / m 2 , the electrolyte temperature is 35~40°C, the same pole distance is 65mm, the electrolysis cycle is 24h, the new electrolysis solution contains zinc 150g / L, and the pH value is 5~6; the electrolysis waste solution contains zinc 50~55g / L, sulfuric acid 155~165g / L . The cathode plate is a rolled pure aluminum plate, and the anode plate is a lead plate containing 1% silver. The electrolyte adopts the cycle system of top in and bottom out, that is, the waste liquid overflowing from the electrowinning cell is mixed with new liquid in a certain proportion and then reused. Generally, the mixing volume ratio of new liquid and waste liquid is 1:5~1:10. Adding 0.15 g / L bone glue, the current efficiency is 88.25%, and the DC power consumption is about 2948kwh / t Zn. Under the same conditions, adding a combined additive consisting of 0.15g / L bone glue, 0.1g / L aloe gel, and 0.024 g / L cetylpyridinium chloride, the current efficiency is 91.83%, and the DC pow...

Embodiment 3

[0017] Current density 600A / m 2 , the electrolyte temperature is 35~40°C, the distance between the same poles is 70mm, the electrolysis cycle is 36h, the new electrolytic solution contains 150g / L zinc, and the pH value is 5~6; the electrolytic waste solution contains 50~55g / L zinc and sulfuric acid 155~165g / L . The cathode plate is a rolled pure aluminum plate, and the anode plate is a lead plate containing 1% silver. The electrolyte adopts the cycle system of top in and bottom out, that is, the waste liquid overflowing from the electrowinning cell is mixed with new liquid in a certain proportion and then reused. Generally, the mixing volume ratio of new liquid and waste liquid is 1:5~1:10. Adding 0.2 g / L bone glue, the current efficiency is 87.62%, and the DC power consumption is about 2984 kwh / t Zn. Under the same conditions, adding a combined additive consisting of 0.2g / L bone glue, 0.05g / L aloe gel, and 0.03 g / L cetylpyridinium chloride, the current efficiency is 90.77%,...

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Abstract

The invention discloses a novel efficient combined additive for zinc electrodeposition. The novel efficient combined additive for zinc electrodeposition is characterized in that the combined additive comprises 0.05-0.2 g/L of bone glue, 0.01-0.1 g/L of aloe gel, 0.01-0.03 g/L of cetylpyridinium chloride; during usage, bone glue, aloe gel and cetylpyridinium chloride are prepared into a solution; the required additives are molten with hot water and then are fully mixed to the fixed volume. The combined additive provided by the invention is used for the zinc electrodeposition process, has a certain creative and positive significance of solving the detail problems during production, improving the current efficiency and the electrolytic zinc quality, reducing energy consumption of zinc electrodeposition and saving the labor cost and also has the great practical production significance of realizing efficient automatic production of zinc electrodeposition, improving the production of zinc smelting, lowering the production cost, increasing the economic benefits of enterprises and other aspects.

Description

technical field [0001] The invention relates to a chemical additive, in particular to a new type of high-efficiency combined additive for zinc electrolysis used in zinc electrolysis operation, the combined additive can greatly improve the cathode current efficiency, reduce production energy consumption, and improve the precipitation quality of the cathode plate It lays a good foundation for the mechanization and automatic production of the zinc electrodeposition process, and belongs to the field of zinc hydrometallurgy technology. Background technique [0002] In recent years, my country's zinc metallurgy has developed rapidly and has become the world's largest zinc producer and consumer. However, there is still a certain gap between my country's zinc metallurgy technology level and foreign advanced levels. Internationally, zinc metallurgy is mainly developing in the direction of large-scale equipment, continuous production, automation and mechanization of operation processe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25C1/16
CPCY02P10/20
Inventor 舒方霞丛自范李辉
Owner SHENYANG RES INST OF NONFERROUS METALS
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