Leaching method of weathered crust illuviation type ion rare earth ore

A weathering crust leaching type, ionic rare earth technology, applied in the direction of improving process efficiency, can solve the problems of low leaching rate, large consumption of leaching agent, waste of resources, etc., so as to reduce the generation of ammonia nitrogen wastewater and promote the effect of column leaching. , the effect of reducing costs

Active Publication Date: 2014-06-11
JIANGXI UNIV OF SCI & TECH
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the leaching rate of rare earths with ammonium sulfate is low, and the consumption of leaching agents is large, which not only causes waste of resources, but also produces a large amount of ammonia nitrogen wastewater. Therefore, the research and development of high-efficiency leaching agents can not only increase the leaching rate of rare earths, but also reduce the generation of ammonia nitrogen wastewater , to achieve an economical and environmentally friendly rare earth extraction process

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
  • Leaching method of weathered crust illuviation type ion rare earth ore
  • Leaching method of weathered crust illuviation type ion rare earth ore
  • Leaching method of weathered crust illuviation type ion rare earth ore

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Take 300g of the original ore sample from the Longnan Rare Earth Mine of Ganzhou Rare Earth Group Company and load it into the leaching column, and use the prepared leaching agent for leaching test. Test conditions: 300g rare earth ore sample, leaching agent: ammonium sulfate, leaching agent concentration: 40g / L, leaching flow rate 0.42mL / min, and leaching liquid-to-solid ratio 0.40mL / g. The leaching rate is 84.03%.

Embodiment 2

[0050] Take 300g of the original ore sample from the Longnan Rare Earth Mine of Ganzhou Rare Earth Group Company and load it into the leaching column, and use the prepared leaching agent for leaching test. Test conditions: 300g rare earth ore sample, leaching agent: ammonium sulfate, leaching agent concentration: 40g / L, leaching aid: fulvic acid, leaching aid concentration: 1g / L; leaching flow rate 0.42mL / min, leaching liquid-to-solid ratio 0.40 mL / g. The leaching rate is 94.14%.

Embodiment 3

[0052] Take 300g of the original ore sample from the Longnan Rare Earth Mine of Ganzhou Rare Earth Group Company and load it into the leaching column, and use the prepared leaching agent for leaching test. Test conditions: 300g rare earth ore sample, leaching agent: ammonium sulfate, leaching agent concentration: 30g / L, leaching aid: fulvic acid, leaching aid concentration: 1g / L; leaching flow rate 0.42mL / min, leaching liquid-to-solid ratio 0.40 mL / g. The leaching rate is 92.82%.

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 leaching method of weathered crust illuviation type ion rare earth ore and relates to improvement of a wet metallurgical rare earth leaching process. The leaching process of the leaching method comprises adding a leaching agent for leaching. The leaching method is characterized in that fulvic acid is further added in the leaching process of the leaching method as a leaching aid. The leaching method of weathered crust illuviation type ion rare earth ore provided by the invention obviously prompts the column leaching effect of rare earth while reducing the dosage of ammonium sulfate, reduces the dosage of the leaching agent ammonium sulfate while improving the rare earth leaching rate, and also effectively reduces the rare earth extraction cost and generation of ammonia-nitrogen wastewater.

Description

Technical field [0001] A method for leaching a weathered crust leaching ion rare earth ore relates to an improvement of a hydrometallurgical process for leaching rare earths. Background technique [0002] The chemical composition of weathering crust leaching type rare earth ore is based on SiO 2 Mainly, quartz, plagioclase, potash feldspar, kaolinite and muscovite are the main ore minerals that make up the weathering crust leaching type rare earth ore. The rare earths are mainly adsorbed on kaolinite, halloysite and illite in the form of ions. In clay minerals, when rare earth ions encounter more active electrolyte cations (Na + , K + , NH 4 + , H + Etc.) can be exchanged and resolved from clay minerals. [0003] The extraction of weathered crust leaching rare earth ore successively uses sodium chloride and ammonium sulfate as the leaching agent. The leaching selectivity of ammonium sulfate is significantly better than sodium chloride, which is beneficial to the extraction of rare ...

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): C22B59/00C22B3/04
CPCY02P10/20
Inventor 罗仙平陈晓明梁长利周贺鹏邹丽萍钱有军唐学昆罗才贵
Owner JIANGXI UNIV OF SCI & TECH
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