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

Cobalt removal agent and cobalt removal process for high-cobalt zinc sulfate solution

A technology of high-cobalt zinc sulfate and cobalt removal agent, applied in the direction of improving process efficiency, etc., can solve the problems that β-naphthol and activated carbon cannot be recycled, unfavorable for the stable control of purification quality, and zinc powder cannot be fully utilized. Achieve the effects of improving the effect of cobalt and impurity removal, significant economic benefits, and reducing the content of impurity elements

Inactive Publication Date: 2017-11-14
JIANGXI UNIV OF SCI & TECH +1
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The cost of the process is high, β-naphthol and activated carbon cannot be recycled, and the waste of resources is serious
[0003] The purification slag produced in the zinc sulfate purification process is usually no longer used, which makes the large amount of incompletely reacted zinc powder contained in the purification slag not fully utilized, resulting in an increase in processing costs and is not conducive to the quality of purification. stability control

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] A process for removing cobalt from a high-cobalt zinc sulfate solution, comprising the steps of:

[0038] (1) At normal temperature, use Sean filter to accurately filter the supernatant solution in zinc sulfate, so that the content of suspended solids in the solution after accurate filtration is less than 50mg / L;

[0039] (2) Add zinc powder 2.0-2.5Kg / m to the filtered supernatant solution at 70-80°C 3 , stirred and reacted for 0.5-1.0h, press-filtered to obtain a net liquid;

[0040] (3) Adjust the temperature of the liquid after cleaning to 55-65°C, continue to add zinc powder, stir for 0.5-1.0h, and press filter until the concentration of the main metal ions in the solution reaches Zn 120-150g / L, Cd 1- 50mg / L, Cu 0.01-0.3mg / L, Ni0.1-1.5mg / L, Fe 1.0-2.0mg / L, Ge 0.01-0.02mg / L, stop adding zinc powder, get two clean liquid, and measure The cobalt content in it, the amount of zinc powder added is between 1.0-1.5Kg / m 3 between;

[0041] (4) Prepare the cobalt removal ...

Embodiment 2

[0052] The cobalt removal agent of a kind of high-cobalt zinc sulfate solution is the same as embodiment 1, and the difference is that a kind of cobalt removal process of high-cobalt zinc sulfate solution comprises the steps:

[0053] (1) At normal temperature, use Sean filter to accurately filter the supernatant solution in zinc sulfate, so that the content of suspended solids in the solution after accurate filtration is less than 50mg / L;

[0054] (2) Add zinc powder 2.0-2.5Kg / m to the filtered supernatant solution at 70-80°C 3 , stirred and reacted for 0.5-1.0h, press-filtered to obtain a net liquid;

[0055] (3) Adjust the temperature of the liquid after cleaning to 55-65°C, continue to add zinc powder, stir for 0.5-1.0h, and press filter until the concentration of the main metal ions in the solution reaches Zn 120-150g / L, Cd 1- 50mg / L, Cu 0.01-0.3mg / L, Ni0.1-1.5mg / L, Fe 1.0-2.0mg / L, Ge 0.01-0.02mg / L, stop adding zinc powder, get two clean liquid, and measure The cobalt c...

Embodiment 3

[0066] The cobalt removal agent of a kind of high-cobalt zinc sulfate solution is the same as embodiment 1, and the difference is that a kind of cobalt removal process of high-cobalt zinc sulfate solution comprises the steps:

[0067] (1) At normal temperature, use Sean filter to accurately filter the supernatant solution in zinc sulfate, so that the content of suspended solids in the solution after accurate filtration is less than 50mg / L;

[0068] (2) Add zinc powder 2.0-2.5Kg / m to the filtered supernatant solution at 70-80°C 3 , stirred and reacted for 0.5-1.0h, press-filtered to obtain a net liquid;

[0069] (3) Adjust the temperature of the liquid after cleaning to 55-65°C, continue to add zinc powder, stir for 0.5-1.0h, and press filter until the concentration of the main metal ions in the solution reaches Zn 120-150g / L, Cd 1- 50mg / L, Cu 0.01-0.3mg / L, Ni0.1-1.5mg / L, Fe 1.0-2.0mg / L, Ge 0.01-0.02mg / L, stop adding zinc powder, get two clean liquid, and measure The cobalt c...

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 provides a cobalt removal agent and technology for a high-cobalt zinc sulfate solution, and belongs to the technical field of zinc sulfate solution purification production. The cobalt removal technology comprises the steps that filtering operation is conducted, primary standing liquid is prepared, secondary standing liquid is prepared, a cobalt removal agent-A is prepared, a cobalt removal agent-B is prepared, the standing liquid is preheated, mixing and stirring operation are conducted, and filter pressing operation is conducted, so that new liquid is obtained, wherein the cobalt removal agent is a mixture of the cobalt removal agent-A and the cobalt removal agent-B. According to the invention, the problem that zinc powder is excessive in the process of zinc sulfate solution purification can be thoroughly solved, the usage amount of the zinc powder is reduced, the utilization rate of the zinc powder is increased, and the stability of the zinc sulfate solution purification quality is improved.

Description

technical field [0001] The invention belongs to the technical field of zinc sulfate solution purification production, and more specifically relates to a cobalt removal agent for a high-cobalt zinc sulfate solution and a cobalt removal process thereof. Background technique [0002] At present, the cobalt removal process of zinc sulfate solution in the electrolytic zinc production process at home and abroad mainly includes antimony salt method, arsenic salt method, xanthate method and β-naphthol method. In both the antimony salt method and the arsenic salt method, arsenic salt or antimony salt are used as additives in the purification process. The principle of cobalt removal is based on the chemical reaction of the more electronegative zinc powder with the more electropositive cobalt ions in the zinc sulfate solution at a certain pH, temperature and stirring intensity, thereby replacing the cobalt ions from the solution. The purpose of adding antimony salt or arsenic salt is ...

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): C22B3/46C22B3/44
CPCC22B3/44C22B3/46Y02P10/20
Inventor 唐云志廖元杭金鑫刘云派张新振柳中梅孙明生杜敏
Owner JIANGXI UNIV OF 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