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

Method for rapidly detecting content of thiourea in copper electrolyte

A copper electrolyte and electrolyte technology, applied in the field of copper electrolysis, can solve problems such as obvious system hysteresis effect, difficulty in accurately controlling the use of thiourea, systemic risks, etc.

Active Publication Date: 2021-05-07
ANHUI UNIVERSITY OF TECHNOLOGY
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Aiming at the problem that the existing copper electrolysis system has a long cycle and obvious system hysteresis effect, which makes it difficult to timely and accurately control the use of thiourea and brings systemic risks to production, the present invention provides a rapid A method for detecting the content of thiourea. This method establishes the mapping rule between the load transfer resistance and the concentration of thiourea through the hydrodynamic impedance method, and can quickly detect the content of thiourea in the copper electrolyte, so that the adjustment of thiourea in the production process can be realized. advance adjustment

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
  • Method for rapidly detecting content of thiourea in copper electrolyte
  • Method for rapidly detecting content of thiourea in copper electrolyte
  • Method for rapidly detecting content of thiourea in copper electrolyte

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1. In Cu 2+ In the electrolyte with a concentration of 60g / L and a sulfuric acid concentration of 200g / L, the load transfer resistance R ct Standard curve with thiourea concentration

[0042] Select copper electrolytes with thiourea concentrations of 20mg / L, 40mg / L, 60mg / L, and 80mg / L respectively, and carry out the following tests on the electrolytes with four thiourea concentrations in turn, wherein the main salt components and Concentrations are: Cu 2+ Concentration 60g / L, sulfuric acid concentration 200g / L.

[0043] testing method:

[0044] (1) Liquid inlet: Add or pump the copper electrolyte into the test tank.

[0045] (2) Hydrodynamic impedance spectroscopy test: Insert three electrodes into the electrolyte to be tested in step (1), wherein the working electrode is a rotating disk electrode Pt, located in the middle of the test tank, and the saturated calomel electrode is a reference electrode , which is located 5mm above the working electrode, and the inert...

Embodiment 2

[0053] 1. In Cu 2+ In the electrolyte with a concentration of 40g / L and a sulfuric acid concentration of 150g / L, the load transfer resistance R ct Standard curve with thiourea concentration

[0054] Select copper electrolytes with thiourea concentrations of 0mg / L, 20mg / L, 40mg / L, 60mg / L, and 80mg / L respectively, and carry out the following tests on the electrolytes with four thiourea concentrations in turn. The salt composition and concentration are: Cu 2+ Concentration 40g / L, sulfuric acid concentration 150g / L.

[0055] testing method:

[0056] (1) Liquid inlet: Add or pump the copper electrolyte into the test tank.

[0057] (2) Hydrodynamic impedance spectroscopy test: Insert three electrodes into the electrolyte to be tested in step (1), wherein the working electrode is a rotating disk electrode Pt, located in the middle of the test tank, and the saturated calomel electrode is a reference electrode , located 3mm above the working electrode, the inert electrode is the a...

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
Rotating speedaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for rapidly detecting the content of thiourea in a copper electrolyte, and belongs to the technical field of copper electrolysis. The technology can be used for rapidly and quantitatively detecting the content of the additive thiourea in the copper electrolyte. According to the method, a hydrodynamic impedance method is adopted, a rotating disc electrode is used as a working electrode, electrochemical impedance is tested at 0V (vs SCE), and the load transfer resistance of the copper ion reduction reaction is obtained. And a corresponding relation between the charge transfer resistance and the thiourea concentration is established so as to obtain a standard curve, and the thiourea concentration in the copper electrolyte is rapidly determined according to the charge transfer resistance value of the to-be-tested solution. The application range of the copper electrolyte is as follows: the Cu<2+> concentration is 40-60g / L, the sulfuric acid concentration is 150-200g / L, and the thiourea concentration is 0-80mg / L.

Description

technical field [0001] The invention belongs to the field of copper electrolysis, and more specifically relates to a method for rapidly detecting the content of thiourea in copper electrolyte. Background technique [0002] Copper electrolytic refining or electrolytic deposition is the main method to obtain high-purity cathode copper (>99.99%) products in the copper metallurgy industry at home and abroad. The impurity content and apparent quality of cathode copper are the two most important production control indicators. In order to produce qualified cathode copper products, in addition to controlling reasonable electrolysis process parameters and electrolyte impurity content, a certain amount of mixed organic additives are usually regularly added to the electrolyte, mainly including gelatin (bone glue), thiourea, Avaton, Casein, etc., among which gelatin and thiourea are the most widely used and essential. The application of thiourea plays a vital role in refining cathod...

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): G01N27/26G01N27/30
CPCG01N27/301G01N27/26Y02P10/20
Inventor 何世伟李继华张礼宁赵维顺樊友奇
Owner ANHUI UNIVERSITY OF TECHNOLOGY
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