Treatment method of organic extraction agent

An organic extraction agent and treatment method technology, applied in the field of metallurgy, can solve the problems of reducing the extraction capacity of the extraction agent, poor extraction phase separation effect, and extraction "poisoning", and achieve the effect of improving the extraction and separation capacity, easy operation, and simple equipment

Active Publication Date: 2017-01-04
CHINALCO JINYUAN RARE EARTH
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These metal ions are gradually enriched in the extractant, which reduces the extraction capacity of the extrac

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

Example Embodiment

[0021] Example one

[0022] Put 500L of P507 extractant with a concentration of 1.5mol / L into a 1000L reactor, add 50L of oxalic acid solution with a concentration of 0.8mol / L to it, stir for 5min, clarify the layers, drain the water phase and add OH - The mixed solution of sodium carbonate and sodium bicarbonate (weight ratio: 3:1) 200L with a concentration of 1.8mol / L, clarify and separate after stirring for 10min, drain the water phase and add H + 100L of a hydrochloric acid solution with a concentration of 5.0mol / L, stirred for 10min to clarify and layer, drain the water phase and add 50L of pure water, stir for 10min, clarify and layer, the remaining organic phase after draining the water phase is the regenerated P507.

Example Embodiment

[0023] Example two

[0024] Put 500L naphthenic acid extractant with a concentration of 0.5mol / L into a 1000L reactor, add 100L of oxalic acid solution with a concentration of 0.2mol / L to it, stir for 10min, clarify the stratification, drain the water phase and add OH - 200L of sodium carbonate solution with a concentration of 1.5mol / L, after stirring for 10min, clarify the layering, drain the water phase and add H + 80L of hydrochloric acid solution with a concentration of 3.0mol / L, clarify and layer after stirring for 10min, add 100L of pure water after draining the water phase, and stir for 5min to clarify and layer, the remaining organic phase after draining the water phase is the regenerated naphthenic acid .

Example Embodiment

[0025] Example three

[0026] Put 500L of N235 extractant with a concentration of 0.3mol / L into a 1000L reactor, add 100L of oxalic acid solution with a concentration of 1.0mol / L to it, stir for 8min, clarify the layers, drain the water phase and add OH - 100L sodium bicarbonate solution with a concentration of 0.5mol / L, stirred for 8min to clarify the layers, drain the water phase and add H + 50L of hydrochloric acid solution with a concentration of 5.0mol / L, clarified and separated after 10 minutes of stirring. After draining the water phase, 200L of pure water was added. After stirring for 15 minutes, the remaining organic phase was regenerated N235.

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

Disclosed is a treatment method of an organic extraction agent. The treatment method comprises the following steps of an acid reaction, an alkali reaction, an inorganic acid reaction and pure water treatment. According to the treatment method, the feature that the capacity of combination between part of metal ions causing contamination of the organic extraction agent and oxalic acid or sodium carbonate or sodium bicarbonate is higher than the capacity of combination between the metal ions and the organic extraction agent is utilized to enable the metal ions to be extracted back to the water phase, and the purpose that the organic extraction agent is regenerated is achieved. The treatment method can effectively remove the metal ions in the organic extraction agent, improves the extraction separation capacity of the organic extraction agent, further has the advantages of being short in technological process and simple in equipment and easy and convenient to operate, and is an excellent organic extraction agent regeneration method.

Description

technical field [0001] The invention relates to the technical field of metallurgy, in particular to a method for treating an organic extractant. Background technique [0002] In hydrometallurgy, organic extractants have different extraction capabilities for different non-ferrous metal elements, so organic extractants are commonly used to separate and purify metal elements. Metal elements such as lanthanides, copper, nickel, cobalt, uranium, indium, tungsten, molybdenum, etc. are all separated and purified by wet methods using organic extractants. Common organic extractants are divided into acidic extractants, neutral extractants, and amine extractants, among which acid extractants include P204, P507, Cyanex272, naphthenic acid, etc., neutral extractants include TBP, P350, TOPO, etc., amine extractants Types of extraction include tri-n-octylamine, N235, N503, etc. With the recycling of organic extractants in the production process, some metal ions that are easily extracted ...

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): C22B3/28C22B3/32C22B3/38
CPCC22B3/282C22B3/324C22B3/3844Y02P10/20
Inventor 马朝扬利天军陈建彬吴冬兰黎廷护田莉婷
Owner CHINALCO JINYUAN RARE EARTH
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