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

A kind of separation method of la, ce, pr, nd mixed rare earth ions

A technology of mixing rare earths and separation methods, applied in the direction of improving process efficiency, etc., can solve the problems of complex separation process and low separation efficiency, and achieve the effect of high extraction efficiency, high purity of rare earths and meeting the needs

Inactive Publication Date: 2017-06-13
UNIV OF SCI & TECH BEIJING
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention will solve the technical problem that the separation process of La, Ce, Pr, Nd mixed rare earth ions is complex and the separation efficiency is low, so a method for separating La, Ce, Pr, Nd mixed rare earth ions is provided

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

[0020] (1): Preparation of chromatographic column filler: Take 10g of N,N,N',N'-tetraoctyl-3-oxoglutaramide diluted with 20g of petroleum ether, take the diluted solution and 40g of diatoms after 50 mesh activation Mix the soil and stir evenly, after the petroleum ether volatilizes, dry it for later use;

[0021] (2): Filling the chromatographic column: Take 10g of the chromatographic column filler processed in step (1), directly put it into the chromatographic column with the eluent, and keep stirring to ensure that the chromatographic column filler is evenly filled into the chromatographic column , and rinse with eluent until the pH of the liquid flowing out of the chromatographic column is stable and balanced;

[0022] (3): Preparation of rare earth carrier filler: the extraction conditions are that the concentration of nitric acid in the aqueous phase solution is 5mol / L, and the total mixed rare earth ion concentration of La, Ce, Pr, and Nd is 0.01mol / L, wherein La, Ce, Pr...

Embodiment 2

[0025] (1): Preparation of chromatographic column packing: Take 10g of N,N,N',N'-tetraoctyl-3-oxoglutaramide diluted with 60g of kerosene, take the diluted solution and 60g of diatomite after 150 mesh activation Mix well, and after the kerosene volatilizes, dry it for later use;

[0026] (2): Fill the chromatographic column: take 10g of the chromatographic column filler processed in step (1), add deionized water to it, stir evenly to moisten it, and then pour it into the chromatographic column equipped with deionized water to fill evenly. And rinse with eluent until the pH of the liquid flowing out from the chromatographic column is stable and balanced;

[0027] (3): Preparation of rare earth carrier filler: the extraction conditions are that the concentration of nitric acid in the aqueous phase solution is 3mol / L, and the total mixed rare earth ion concentration of La, Ce, Pr, and Nd is 0.01mol / L, where La, Ce, Pr, and Nd The concentration of rare earth ions is 0.0025mol / L, ...

Embodiment 3

[0030] (1): Preparation of chromatographic column packing: Take 10g of N,N,N',N'-tetraoctyl-3-oxoglutaramide diluted with 30g of octane, take the diluted solution and 20g of activated diatoms at 300 mesh Mix the soil and stir well, after the octane volatilizes, dry it for later use;

[0031] (2): Filling the chromatographic column: take 3.5g of the chromatographic column filler processed in step (1), add deionized water to it, stir evenly to moisten it, and then pour it into the chromatographic column filled with deionized water for even filling , and rinse with eluent until the pH of the liquid flowing out of the chromatographic column is stable and balanced;

[0032] (3): Preparation of rare earth carrier filler: the extraction conditions are that the concentration of nitric acid in the aqueous phase solution is 6mol / L, and the total mixed rare earth ion concentration of La, Ce, Pr, and Nd is 0.01mol / L, where La, Ce, Pr, and Nd The concentration of rare earth ions is 0.0025...

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 separation method of La, Ce, Pr and Nd mixed rare earth ions, which belongs to the field of separation and purification of rare earth. According to the separation method of the La, Ce, Pr and Nd mixed rare earth ions, which is provided by the invention, a chromatographic column which is prepared by utilizing N,N,N',N'-tetra octyl-3-oxa-pentanediamide is used for separating the mixed rare earth ions through leaching by using leacheate. The separation method of the mixed rare earth ions has the advantages of simplicity and practicability in operation, high extraction efficiency and no environmental pollution, the packing of the chromatographic column can be recycled, the purity of separated rare earth is high, and the requirement on the purity of single rare earth oxides in the current society can be satisfied.

Description

technical field [0001] The invention relates to the field of rare earth separation and purification, in particular to a method for separating La, Ce, Pr and Nd mixed rare earth ions. Background technique [0002] With the advancement of science and technology and the continuous breakthrough of application technology, the value of single rare earth oxide is increasing. Nowadays, rare earth has become an extremely important strategic resource. Rare earth elements have been widely used in petroleum, chemical industry, metallurgy, textile, ceramics, glass, permanent magnet materials and other fields. At present, the industrial separation method of rare earth is to use P204 and P205 for multiple extraction and separation, but the extraction efficiency is low, and the extraction result is not very ideal. In order to improve the process and improve the utilization efficiency of rare earth resources, a simple and efficient It is extremely necessary to separate a single rare earth e...

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): C22B59/00C22B3/28
CPCY02P10/20
Inventor 弓爱君谢艳萍邱丽娜童璐潘裕红赵云波
Owner UNIV OF SCI & TECH BEIJING
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