Flocculation extraction separation method of zinc and cobalt ions

An extraction and flocculent technology, which is applied in the field of flocculent extraction and separation of zinc and cobalt ions, can solve the problems of poor extraction capacity, high production cost, and high price of P507, and achieve fewer extraction stages, low dosage, and good separation effect of zinc and cobalt Effect

Active Publication Date: 2018-03-06
SANMING UNIV
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The inventor has found that when P507 is used as the extraction agent, the separation effect of zinc and cobalt is usually better, but P507 is expensive, resulting in excessive production costs; and when P204 is used as the extraction agent, although P204 is relatively cheap, its extraction capacity is relatively

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
  • Flocculation extraction separation method of zinc and cobalt ions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037]A method for flocculent extraction and separation of zinc-cobalt ions provided in this embodiment comprises the following steps:

[0038] (1) leaching waste residue containing zinc and cobalt with sulfuric acid, the excess coefficient of sulfuric acid is 1.2, the leaching time is 2.5h, the filtrate after leaching is leachate, and the leaching rate of zinc and cobalt reaches 99.7%;

[0039] (2) Add zinc powder to the leaching solution, the excess coefficient of zinc powder is 1.5, and the purification time is 0.8h to remove impurities such as copper and cadmium in the leaching solution. ;

[0040] (3) Add sodium hydroxide to the purification solution, adjust the pH value of the purification solution to 7.8, until the purification solution becomes a flocculent suspension;

[0041] (4) With P204 as the extractant, after adding sulfonated kerosene, mix and configure the extracted organic phase whose concentration of P204 is 0.3mol / L;

[0042] (5) Mix the flocculent suspens...

Embodiment 2

[0047] (1) leaching waste residue containing zinc and cobalt with sulfuric acid, the excess coefficient of sulfuric acid is 1.1, the leaching time is 2h, the filtrate after leaching is leachate, and the leaching rate of zinc and cobalt reaches 98.2%;

[0048] (2) Add zinc powder to the leaching solution, the excess coefficient of zinc powder is 1.2, the purification time is 0.9h, remove copper, cadmium and other impurity components in the leaching solution, the filtrate after impurity removal and filtration is the purification solution, and obtain purification residue ;

[0049] (3) Add sodium hydroxide to the purification solution, adjust the pH value of the purification solution to 7.5, until the purification solution becomes a flocculent suspension;

[0050] (4) Take P204 as the extraction agent, add sulfonated kerosene and mix to form an extraction organic phase whose concentration of P204 is 0.25mol / L;

[0051] (5) Mix the flocculent suspension and the extracted organic ...

Embodiment 3

[0056] (1) leaching waste residue containing zinc and cobalt with sulfuric acid, the excess coefficient of sulfuric acid is 1.3, the leaching time is 2h, the filtrate after leaching is leachate, and the leaching rate of zinc and cobalt reaches 99.6%;

[0057] (2) Add zinc powder in the leaching solution, the excess coefficient of the zinc powder is 1.3, and the purification time is 1h, remove the impurity components such as copper and cadmium in the leaching solution, the filtrate after the impurity removal and filtration is the purification solution, and obtain the purification slag;

[0058] (3) Add sodium hydroxide to the purification solution, adjust the pH value of the purification solution to 8.5, until the purification solution becomes a flocculent suspension;

[0059] (4) Take P204 as the extraction agent, add sulfonated kerosene and mix to form an extraction organic phase whose concentration of P204 is 0.1mol / L;

[0060] (5) Mix the flocculent suspension and the extra...

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 flocculation extraction separation method of zinc and cobalt ions, and relates to the technical field of extraction separation. The flocculation extraction separation method of zinc and cobalt ions comprises the following steps: leaching zinc-cobalt-containing waste residue with nitric acid or sulfuric acid to obtain a leachate; adding zinc powder to the leachate, and removing impurity components to obtain a purified liquid; adjusting the pH of the purified liquid with an alkaline reagent to obtain a flocculent suspension, mixing the flocculent suspension with an extracted organic phase containing P204, obtaining a loaded organic phase and a raffinate through an extraction reaction, and using the raffinate to recover cobalt; reversely extracting the loaded organicphase to obtain a zinc ion solution, and then recovering zinc. The alkaline reagent is added to convert metal ions to a hydroxide flocculent precipitate; the hydroxide flocculent precipitate has a large specific surface area, high specific surface energy and chemical reactivity, and can rapidly undergo an extraction reaction with acidic P204, the single-stage reaction rate is high, the extractionreaction is thorough, the amount of P204 is small, the separation effect is good, and the application prospect is broad.

Description

technical field [0001] The invention relates to the technical field of extraction and separation, and in particular to a method for flocculent extraction and separation of zinc and cobalt ions. Background technique [0002] Cobalt is an important strategic element, which has the advantages of high melting point, good wear resistance, high strength, and strong magnetism. It is widely used in national defense, atomic energy, aerospace, electronics, chemical, medical and other industries. At present, cobalt ore resources in my country are scarce, and the recovery of cobalt in cobalt-containing wastes by leaching-extraction-electrowinning process is an important way to alleviate the scarcity of cobalt resources. [0003] Zinc-cobalt-containing waste slag is an important cobalt-containing waste. In the process of cobalt recovery, the separation effect of zinc and cobalt has an important impact on the recovery rate of cobalt and the quality of cobalt products. At present, the sep...

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): C22B7/00C22B3/06C22B3/08C22B3/38C22B3/44
CPCC22B3/44C22B7/007C22B3/3846Y02P10/20
Inventor 李强李奇勇何丽钦吴婷婷包云江张杭郑佳佳付春英
Owner SANMING UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap