Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for complexation and impurity removal of ionic rare earth ore leachate

An ion-type rare earth ore and leachate technology, which is applied in the field of dressing and smelting, can solve the problems of low rare earth loss rate, high rare earth loss rate, and low impurity removal efficiency, so as to reduce rare earth loss, strengthen complexation removal, and promote full reaction Effect

Active Publication Date: 2022-03-01
JIANGXI UNIV OF SCI & TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of low impurity removal efficiency, high cost, serious ammonia nitrogen pollution, and high rare earth loss rate in ionic rare earth ore leachate, the purpose of the present invention is to provide a safe, environmentally friendly, low-consumption and high-efficiency, no ammonia nitrogen pollution, high impurity removal rate, and rare earth loss. A new method of complexation and impurity removal with low efficiency

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 complexation and impurity removal of ionic rare earth ore leachate
  • Method for complexation and impurity removal of ionic rare earth ore leachate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The leachate of ionic rare earth ore used in the impurity removal test comes from a rare earth mine in Xunwu, Ganzhou City, Jiangxi Province. The total amount of rare earth ions in the leachate is 671.55 mg / L, and the impurity Al 3+ The content is 218.46mg / L, impurity Fe 3+ The content is 49.38mg / L. The impurity Al in the leaching solution obtained by the traditional impurity removal process 3+ The removal rate is 88.58%, Fe 3+ The removal rate was 83.73%, and the loss rate of rare earth in sediment residue was 7.26%.

[0032] A method for complexing and removing impurities of ionic rare earth ore leachate of the present invention is used for removing impurities. The impurity removal process includes adding lauryl glucoside as an impurity remover. The steps for removing impurities are:

[0033] (1) Mix and stir the ionic rare earth ore leaching solution in a beaker, and the stirring intensity is 200r / min;

[0034] (2) Add 50% of the liquid-phase impurity-removing agen...

Embodiment 2

[0038] The ionic rare earth ore leachate used in the impurity removal test comes from a rare earth mine in Xunwu, Ganzhou City, Jiangxi Province. The total amount of rare earth ions in the leachate is 632.85mg / L, the content of impurity aluminum ions is 244.58mg / L, and the content of impurity iron ions is 46.32mg / L. The impurity Al in the leaching solution obtained by the traditional impurity removal process 3+ The removal rate is 87.85%, Fe 3+ The removal rate is 83.25%, and the loss rate of rare earth in sedimentation residue is 8.77%.

[0039] A method for complexing and removing impurities of ionic rare earth ore leachate of the present invention is used for removing impurities. The impurity removal process includes adding lauryl glucoside as an impurity remover. The steps for removing impurities are:

[0040] (1) Mix and stir the ionic rare earth ore leaching solution in a beaker, and the stirring intensity is 300r / min;

[0041] (2) Add 55% of the liquid-phase impurit...

Embodiment 3

[0045] The ionic rare earth ore leachate used in the impurity removal test comes from a rare earth mine in Xunwu, Ganzhou City, Jiangxi Province. The total amount of rare earth ions in the leachate is 654.78mg / L, the content of impurity aluminum ions is 238.15mg / L, and the content of impurity iron ions is 47.55mg / L. The impurity Al in the leaching solution obtained by the traditional impurity removal process 3+ The removal rate is 89.12%, Fe 3+ The removal rate is 84.26%, and the loss rate of rare earth in sedimentation residue is 9.14%.

[0046] A method for complexing and removing impurities of ionic rare earth ore leachate of the present invention is used for removing impurities. The impurity removal process includes adding lauryl glucoside as an impurity remover. The steps for removing impurities are:

[0047] (1) Mix and stir the ionic rare earth ore leaching solution in a beaker, and the stirring intensity is 400r / min;

[0048] (2) Add 55% of the liquid-phase impurit...

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 purifying and removing impurities from ionic rare earth ore leachate. The method comprises the following steps: uniformly stirring and mixing the ionic rare earth ore leachate, adding coco-glucoside as an impurity removing agent to regulate and control the pH value of the leachate, and carrying out solid-liquid separation after complete reaction to obtain purified leachate and precipitation residues. By adopting the purification and impurity removal method disclosed by the invention, the problems of high impurity ion content, difficulty in removal, high rare earth loss rate in the impurity removal process, serious ammonia nitrogen pollution and the like in the rare earth leaching solution can be obviously solved, and the novel purification and impurity removal method for the rare earth leaching solution is safe, environment-friendly, low in impurity removal cost, high in purification efficiency, free of ammonia nitrogen pollution and low in rare earth loss rate; popularization and application are facilitated.

Description

technical field [0001] The invention belongs to the field of beneficiation and smelting, and in particular relates to a method for complexing and removing impurities in leaching liquid of ionic rare earth ore. Background technique [0002] my country is rich in rare earth resources, with extremely high development and utilization value and unique special resource advantages. Among them, ionic rare earth ores are a new type of exogenous rare earth mineral resources unique to my country that exist in the form of ionic phases. They are mainly distributed in seven southern provinces represented by Jiangxi and Gannan, including Hunan, Jiangxi, Guangdong, Fujian , Guangxi, Yunnan, and Zhejiang. Ganzhou, Jiangxi has the most typical rare earth resources and the most abundant reserves. It has a complete distribution of rare earth elements and is rich in medium and heavy rare earths that are closely related to high-tech, high-tech, and new material industries. Elements and other advan...

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): C22B3/02C22B3/44C22B59/00
CPCC22B3/02C22B3/44C22B59/00Y02P10/20
Inventor 罗仙平何坤忠张永兵周贺鹏谢帆鑫龚磊
Owner JIANGXI UNIV OF SCI & TECH