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

A method for forming a composite ceramic film on the surface of a lead-silver alloy anode

A lead-silver alloy and ceramic film layer technology is applied in the field of electrochemical film formation, which can solve the problems of limited widespread use and increased anode corrosion rate, and achieves the effects of strong corrosion resistance, reduced cell voltage, and easy washing.

Active Publication Date: 2017-06-23
KUNMING HENDERA SCI & TECH +1
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The transition layer of the fluorine-containing product obtained after the anode is treated with the pretreatment solution is without Mn 2+ When it exists, the corrosion rate of its anode will increase instead, thus limiting its widespread use

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
  • A method for forming a composite ceramic film on the surface of a lead-silver alloy anode
  • A method for forming a composite ceramic film on the surface of a lead-silver alloy anode
  • A method for forming a composite ceramic film on the surface of a lead-silver alloy anode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for forming a composite ceramic membrane on the surface of a lead-silver alloy anode, wherein the composite ceramic membrane on the surface of the lead-silver alloy anode consists of an intermediate membrane and an outer membrane. In the method of the invention, an intermediate film layer is first compounded on the surface of the lead-silver alloy anode, and then an outer film layer is compounded on the surface of the intermediate film layer. Wherein, the film forming steps of the intermediate film layer are as follows:

[0029] (1) Use a rod-shaped aluminum-based lead-silver alloy with a diameter of 12 to 14 mm as a pretreatment anode, remove the oil stain on the surface of the pretreatment anode by chemical method, and then rinse the anode surface with water;

[0030] (2) After the supporting electrolyte and water are mixed evenly, it is configured into an intermediate membrane layer film-forming electrolyte, the sulfuric acid concentration of the supporting ...

Embodiment 2

[0037] In the method for forming a composite ceramic film on the surface of the lead-silver alloy anode, an intermediate film layer is first compounded on the surface of the lead-silver alloy anode, and then an outer film layer is compounded on the surface of the intermediate film layer. Wherein, the film forming steps of the intermediate film layer are as follows:

[0038] (1) A section of aluminum-based lead-silver alloy with a width of 15mm and a thickness of 7mm is used as a pretreatment anode, and the oil stain on the surface of the pretreatment anode is removed by a chemical method, and then the surface of the anode is washed with water;

[0039] (2) After the supporting electrolyte and water are mixed evenly, it is configured into an intermediate membrane layer film-forming electrolyte, the sulfuric acid concentration of the supporting electrolyte is 150g / L, and the cerium sulfate concentration is 30g / L;

[0040] (3) With pure lead or pure aluminum plate as the negative...

Embodiment 3

[0046] In the method for forming a composite ceramic film on the surface of the lead-silver alloy anode, an intermediate film layer is first compounded on the surface of the lead-silver alloy anode, and then an outer film layer is compounded on the surface of the intermediate film layer. Wherein, the film forming steps of the intermediate film layer are as follows:

[0047] (1) the rod-shaped aluminum-based lead-silver alloy with a diameter of 12mm is used as the pretreatment anode, removes the oil stain on the surface of the pretreatment anode by chemical method, and then rinses the anode surface with water;

[0048] (2) After the supporting electrolyte and water are mixed uniformly, it is configured into an intermediate membrane layer film-forming electrolyte, the concentration of the sulfuric acid of the supporting electrolyte is 200g / L, and the concentration of cerium sulfate is 50g / L;

[0049] (3) With pure lead or pure aluminum plate as the negative electrode, the lead-s...

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

PropertyMeasurementUnit
diameteraaaaaaaaaa
diameteraaaaaaaaaa
diameteraaaaaaaaaa
Login to View More

Abstract

A method for forming a composite ceramic film on the surface of a lead-silver alloy anode, comprising first compounding an intermediate film on the surface of a lead-silver alloy anode, and then compounding an outer layer of film. For the anode, rinse after removing the surface oil; use supporting electrolyte and water to form an intermediate film-forming electrolyte; use pure lead or pure aluminum plate as the cathode, place the lead-silver alloy anode in the intermediate film-forming electrolyte, and place it on the surface of the anode Obtain the lead dioxide ceramic film layer, i.e. the middle film layer; the film-forming of the outer film layer is to configure the supporting electrolyte, additives and water into the film-forming electrolyte of the outer film layer, and use the lead-silver alloy anode of the composite middle film layer as the The anode, the pure aluminum plate as the cathode, is placed on the outer film layer to form the film-forming electrolyte, and the outer film layer is obtained on the surface of the middle film layer. The composite ceramic film layer obtained by the invention has excellent electrical conductivity, catalytic activity and electrochemical performance, and has lower oxygen evolution potential and cell voltage during zinc electrowinning, thereby realizing energy saving and consumption reduction.

Description

technical field [0001] The invention belongs to the technical field of electrochemical film formation, in particular to a method for forming a composite ceramic film layer on the surface of a lead-silver alloy anode. Background technique [0002] In the process of electrowinning zinc, lead-silver alloy anodes often have corrosion and lead dissolution, thereby increasing the concentration of Pb in the zinc electrowinning solution. 2+ Concentration, eventually leading to lead deposition in the zinc cathode to reduce the quality of zinc. At the same time, the lead-silver alloy anode is in the zinc electrowinning process, due to the MnO generated in the zinc electrowinning solution 2 The adhesion is not dense and irregular so that it is easy to fall off from the anode without protecting the anode. [0003] Usually, a new lead-silver alloy anode can form a protective film on the surface of the lead-silver alloy anode after a long period of time during the zinc electrowinning pr...

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
Patent Type & Authority Patents(China)
IPC IPC(8): C25D9/06
Inventor 黄惠陈步明施学金郭忠诚
Owner KUNMING HENDERA SCI & TECH
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