Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Preparation method of novel corrosion-resisting zinc cathode plate

A cathode plate, corrosion-resistant technology, applied in the field of preparation of new corrosion-resistant zinc cathode plate, can solve the problems of complex operation process, easy to be corroded, not clear enough, etc., achieve simple preparation process, reduce adhesion, increase anti-F performance effect

Active Publication Date: 2017-03-08
湖南株冶有色金属有限公司
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Aluminum is a relatively active metal and is easily corroded, especially the part of the electrolytic zinc cathode plate exposed outside the liquid level line. The anti-corrosion methods mentioned above are not clear enough, the operation process is relatively complicated, and how to reduce the cell voltage , the improvement of electric efficiency has never been mentioned

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method of novel corrosion-resisting zinc cathode plate
  • Preparation method of novel corrosion-resisting zinc cathode plate
  • Preparation method of novel corrosion-resisting zinc cathode plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Step A, pretreatment process: After polishing the common cathode plate, put it into a sulfuric acid solution with a volume percentage concentration of 50g / L and soak it at a temperature of 75°C for 1 hour, then perform alkali washing, water washing, polishing and ultrasonic washing to obtain Pretreat cathode plates.

[0044] Step B, oxidation process: oxidize the pretreated cathode plate obtained in step A in an acidic oxidation tank with hydrogen peroxide, a sulfuric acid solution with a volume percentage concentration of 120g / L, an oxidation temperature of 95°C, an oxidation time of 3 hours, and wash with water Afterwards, an oxidized cathode plate is obtained.

[0045] Step C, sealing process: put the oxidized cathode plate obtained in step B into a sulfuric acid solution with a volume percentage concentration of 50 g / L, a mass percentage concentration of potassium permanganate of 20%, a sealing temperature of 70°C, and a sealing time of 5 hours , to obtain a closed...

Embodiment 2

[0049] Step A, pretreatment process: After polishing the common cathode plate, put it into a sulfuric acid solution with a volume percentage concentration of 100g / L and soak it at a temperature of 50°C for 3 hours, then perform alkali washing, water washing, polishing and ultrasonic washing to obtain Pretreat cathode plates.

[0050] Step B, oxidation process: oxidize the pretreated cathode plate obtained in step A in an acidic oxidation tank with hydrogen peroxide, a sulfuric acid solution with a volume percentage concentration of 180g / L, an oxidation temperature of 80°C, an oxidation time of 6 hours, and wash with water Afterwards, an oxidized cathode plate is obtained.

[0051] Step C, sealing process: put the oxidized cathode plate obtained in step B into a sulfuric acid solution with a volume percentage concentration of 120 g / L, a mass percentage concentration of potassium permanganate of 15%, a sealing temperature of 90°C, and a sealing time of 3 hours , to obtain a clo...

Embodiment 3

[0055] Step A, pretreatment process: After polishing the common cathode plate, put it into a sulfuric acid solution with a volume percentage concentration of 80g / L and soak it at a temperature of 65°C for 2 hours, then perform alkali washing, water washing, polishing and ultrasonic washing to obtain Pretreat cathode plates.

[0056] Step B, oxidation process: oxidize the pretreated cathode plate obtained in step A in an acidic oxidation tank with hydrogen peroxide, a sulfuric acid solution with a concentration of 150 g / L by volume, an oxidation temperature of 85° C., and an oxidation time of 4 hours. Wash with water Afterwards, an oxidized cathode plate is obtained.

[0057] Step C, sealing process: put the oxidized cathode plate obtained in step B into a sulfuric acid solution with a volume percentage concentration of 80g / L, the mass percentage concentration of potassium permanganate is 17%, the sealing temperature is 80°C, and the sealing time is 4 hours , to obtain a close...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to a preparation method of a novel corrosion-resisting zinc cathode plate. The preparation method comprises the following steps: pre-treating a common zinc cathode plate; removing impurities and grease dirt on the surface of the cathode plate; meanwhile, damaging dense aluminum oxide on the surface of the cathode plate; putting the cathode plate into an acidic oxidization groove for carrying out oxidation treatment to obtain one layer of modified dense oxide thin film; then putting the modified dense oxide thin film into a potassium permanganate solution and carrying out oxidization to seal micro-holes; and carrying out curing treatment on the sealed cathode plate at a high-temperature condition to obtain the novel corrosion-resisting zinc cathode plate. According to the preparation method of the novel corrosion-resisting zinc cathode plate, provided by the invention, the zinc stripping efficiency can be remarkably improved and the service life of the cathode plate is prolonged; and the anti-knocking performance of the cathode plate is improved and an application prospect is wide.

Description

technical field [0001] The invention relates to the technical field of non-ferrous metal zinc metallurgy and cathode plate surface treatment, in particular to a preparation method of a novel corrosion-resistant zinc cathode plate. Background technique [0002] The cathode plate for wet electrolytic zinc is made of pure aluminum rolled plate, and the anode plate is made of lead-silver alloy or lead-silver multi-element alloy. During the production process, most of the surfaces of the cathode plate and the anode plate are immersed in the zinc sulfate solution in the electrolytic cell. Under the action of direct current, the cathode and the anode each undergo discharge deposition, and the zinc in the zinc sulfate is deposited and adhered. On the surface of the cathode plate, the total electrochemical reaction formula of its electrolytic deposition is: [0003] ZnSO 4 +H 2 O+е Zn+H 2 SO 4 +1 / 2O 2 [0004] However, during the production process, the parts above the neck ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C25C7/02C25C1/16C23C22/56
CPCC23C22/56C25C1/16C25C7/02Y02P10/20
Inventor 廖贻鹏刘一宁伏东才林文军潘向阳黄鹏飞
Owner 湖南株冶有色金属有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com