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

Method for short-process extraction of rubidium chloride from rubidium-containing high-salt brine

A rubidium chloride, short-process technology, applied in chemical instruments and methods, rubidium/cesium/francium compounds, polluted waterways/lakes/ponds/rivers treatment, etc. Small size, serious potassium co-extraction phenomenon, etc., to achieve the effect of reducing the cost of subsequent treatment, reducing the amount of production, and reducing the number of stages of extraction and washing

Active Publication Date: 2021-01-08
INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

4-tert-butyl-2-(α-methylbenzyl)phenol (t-BAMBP) is an extractant that can achieve high recovery of rubidium, but the co-extraction of potassium during the extraction process is serious
However, in order to ensure the effective separation of rubidium and potassium, it is necessary to use more washing water
This leads to the fact that in the fractional distillation extraction, the washing water will be incorporated into the extraction liquid, so that the phase ratio of the extraction process will be reduced, thereby affecting the extraction recovery of rubidium

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 short-process extraction of rubidium chloride from rubidium-containing high-salt brine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] use figure 1 The process flow shown is to extract rubidium from a certain solid waste leach solution (ie high potassium salt brine containing rubidium), and its main metal components are shown in Table 1.

[0047] Table 1 Main metal components of solid waste leachate

[0048] Element Rb Cs K Na Cu Zn Content (g / L) 3.77 0.41 140.71 47.23 4.78 2.10

[0049] S1: Add NaOH to the solid waste leaching solution, adjust the pH value of the solution to 10, let it stand for 2 hours, precipitate metal ion precipitates, filter and remove the metal ion precipitates, and obtain a purified solution;

[0050] S2: adding NaOH to the purification solution obtained in step S1, adjusting the pH value of the solution to 13.5, and filtering after standing for 2 hours to obtain the extraction material liquid and the purification residue;

[0051] S3: performing extraction-washing-reverse osmosis-back-extraction treatment on the extraction liquid obtained ...

Embodiment 2

[0063] use figure 1 The process flow shown is to extract rubidium in the leaching solution of a certain rubidium-containing ore sinter (ie high-potassium salt brine containing rubidium), and its main metal components are shown in Table 4.

[0064] Table 4 Main metal components of rubidium-containing ore sinter leachate

[0065] Element Rb Cs K Na Cu Zn Pb Content (g / L) 1.74 0.005 88.21 13.26 1.34 8.72 1.11

[0066] S1: adding NaOH to the leaching solution of rubidium-containing ore sinter, adjusting the pH value of the solution to 10, standing for 2 hours, depositing metal ion precipitates, filtering and removing the metal ion precipitates, and obtaining a purified solution;

[0067] S2: adding NaOH to the purification solution obtained in step S1, adjusting the pH value of the solution to 13.5, and filtering after standing for 2 hours to obtain the extraction material liquid and the purification residue;

[0068] S3: performing extract...

Embodiment 3

[0080] use figure 1 The process flow shown is to extract rubidium in a simulated rubidium-containing salt lake water (ie, rubidium-containing high-potassium salt brine), and its main metal components are shown in Table 7.

[0081] Table 7 The main metal components of simulated rubidium-containing salt lake water

[0082] Element Rb Cs K Na Li Mg Content (g / L) 0.21 0.002 27.72 96.95 6.85 28.38

[0083] S1: adding NaOH to the leaching solution of rubidium-containing ore sinter, adjusting the pH value of the solution to 10, standing for 2 hours, depositing metal ion precipitates, filtering and removing the metal ion precipitates, and obtaining a purified solution;

[0084] S2: adding NaOH to the purification solution obtained in step S1, adjusting the pH value of the solution to 13.5, and filtering after standing for 2 hours to obtain the extraction material liquid and the purification residue;

[0085] S3: performing extraction-washing-rever...

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 relates to the technical field of rubidium separation and purification, and particularly discloses a method for short-process extraction of rubidium chloride from rubidium-containing high-salt brine. The method comprises the following steps: firstly, adding inorganic alkali into rubidium-containing high-salt brine in stages, precipitating metal ion impurities such as copper, lead, zinc and magnesium, and adjusting the pH value of the high-salt brine to 13-14; and then, carrying out extraction washing reverse osmosis reverse extraction treatment on the high-salt brine by using 4-tert-butyl-2-(alpha-methyl benzyl) phenol as an extracting agent and sulfonated kerosene as a diluent to obtain a reverse extraction solution containing rubidium chloride, and sequentially carrying outprecipitation, calcination and recrystallization treatment on the reverse extraction solution to obtain a high-purity rubidium chloride product. According to the method disclosed by the invention, the rubidium is separated and purified from the high-salt brine by utilizing a short extraction process, so that the extraction process is shortened, partial circulation of washing water is realized, the yield of raffinate is reduced, and the subsequent treatment cost of the salt brine is reduced on the premise of ensuring the separation effect and the recovery rate of the rubidium.

Description

technical field [0001] The invention relates to the technical field of rubidium separation and purification, in particular to a short-flow method for extracting rubidium chloride from rubidium-containing high-salt brine. Background technique [0002] Rubidium is a rare alkali metal element, which has a wide range of applications in optical glass, thermoelectric generators, atomic clocks, solar cells, and medicine. However, rubidium does not have a pure natural mineral, and is often dispersed in mica, cesium garnet, and halides containing cesium, lithium, and potassium, and can only be extracted as a by-product, resulting in its scarcity. [0003] The separation and purification of rubidium is a challenging task, because the associated alkali metal elements have very similar physical and chemical properties. Common separation methods include precipitation, ion exchange, adsorption and extraction. The precipitation method is the earliest rubidium separation method, but it ha...

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 Applications(China)
IPC IPC(8): C01D17/00C02F9/10C02F101/12
CPCC01D17/00C02F1/001C02F1/04C02F1/26C02F1/441C02F1/5236C02F1/66C02F9/00C02F2101/12C02F2103/007
Inventor 吕先谨吕建芳刘勇马致远周吉奎陈志强胡红喜饶金山吕昊子刘超
Owner INST OF RESOURCES UTILIZATION & RARE EARTH DEV GUANGDONG ACAD OF SCI
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