Method for real-time monitoring rare earth ion removing of fused salt by electrochemical means

A rare earth ion and real-time monitoring technology is applied in the field of real-time monitoring of molten salt to remove rare-earth ions, and electrochemical method of real-time monitoring of molten salt to remove rare-earth ions, which can solve the problems of tight energy supply, rapid growth rate, and large total energy demand. Achieve the effect of improving work efficiency, high sensitivity, and avoiding radiation hazards

Inactive Publication Date: 2018-11-13
HARBIN ENG UNIV
View PDF5 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the long-term rapid development of my country's economy, the total energy demand is large and the growth rate is fast, and the energy

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 real-time monitoring rare earth ion removing of fused salt by electrochemical means
  • Method for real-time monitoring rare earth ion removing of fused salt by electrochemical means
  • Method for real-time monitoring rare earth ion removing of fused salt by electrochemical means

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Table 1 LiCl-KCl-(2.6wt.%)DyCl at 500℃ 3 In the molten salt system, the ICP data of the molten salt supernatant when anhydrous sodium phosphate is added in different amounts

[0042]

[0043] Weigh 1 part of LiCl-KCl (the mass ratio of LiCl and KCl is 38:45) salt, mix well and put it into a corundum crucible, and bake it at 200°C for 12 hours to remove the water in it. Heat the eutectic salt to 500°C to fully melt. Connect the three-electrode system. Firstly, under the potential condition of -2.15V, pre-electrolysis was performed for 4 hours by chronoamperometry, and a new tungsten electrode was replaced. DyCl 3 Add to the molten salt several times, adding 0.00116mol DyCl each time 3 , adding DyCl each time 3 Finally, measure the square wave voltammetry after stirring evenly, until reaching the detection limit of the square wave voltammetry (the peak height of the square wave voltammetry no longer increases with the addition of dysprosium chloride). The relatio...

Embodiment 2

[0047] Table 2 LiCl-KCl-(2.6wt.%)DyCl at 450℃ 3 In the molten salt system, the ICP data of the molten salt supernatant when anhydrous sodium phosphate is added in different amounts

[0048]

[0049] Weigh 1 part of LiCl-KCl salt, mix well and put it into a corundum crucible, and bake it at 200°C for 12 hours to remove the water in it. The eutectic salt was heated up to 450°C to fully melt. Connect the three-electrode system. First, under the potential condition of -2.15V, pre-electrolyze with the method of chronoamperometry for 4 hours, and replace the tungsten electrode. DyCl 3 Add to the molten salt several times, adding 0.0012mol DyCl each time 3 , adding DyCl each time 3 Finally, measure the square wave voltammetry after stirring evenly, until reaching the detection limit of the square wave voltammetry (the peak height of the square wave voltammetry no longer increases with the addition of dysprosium chloride), arrange the experimental data to obtain the square wav...

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 method for real-time monitoring rare earth ion removing of fused salt by electrochemical means. The method comprises the following steps: heating rare earth chloride containing LiCl and KC1 fused salt until the fused salt is molten; connecting a reference electrode, a working electrode and a counter electrode three-electrode system to an electrochemical workstation; addingtrisodium phosphate anhydrous to the LiCl and KCl fused salt by batches; standing for 30min after adding trisodium phosphate anhydrous each time; detecting a square wave volt-ampere curve through thereference electrode, the working electrode and the counter electrode three-electrode system; and obtaining the variation of the concentration of rare earth ions based on the peak height of a standardworking curve of rare earth chloride. According to the method, fused chlorides can be purified and recycled; the purifying rate of the rare earth ions is more than 99%; and meanwhile, the precipitation reaction progress can be monitored in real time through square wave voltammetry; the process of monitoring the variation of the concentration of the ions by the square wave voltammetry is an automatic continuous process, and the method has the characteristics of being high in sensitivity and quick to analyze by being compared with other analyzing methods.

Description

technical field [0001] The invention relates to a method for real-time monitoring of molten salt removal of rare earth ions, in particular to an electrochemical method for real-time monitoring of molten salt removal of rare earth ions, belonging to the field of spent fuel reprocessing. Background technique [0002] With the long-term rapid development of my country's economy, the total energy demand is large and the growth rate is fast, and the energy supply is tight. Conventional fossil fuel energy cannot fundamentally guarantee my country's long-term energy security and sustainable development. Nuclear energy is a safe and clean energy. The development of nuclear energy is an objective requirement for China to optimize its energy structure and an important guarantee for my country's future energy and power security supply. Making full use of nuclear energy resources and realizing the minimization and safe disposal of nuclear waste are the basic requirements for the sustain...

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): G01N27/42G01N27/48
CPCG01N27/42G01N27/48
Inventor 李梅韩伟杨志强杨明帅董永昌
Owner HARBIN ENG 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