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Method for purifying and removing impurities from ionic rare earth ore leachate

An ionic rare earth ore, purification and impurity removal technology, which is applied in the field of beneficiation and smelting, can solve the problems of low purification and impurity removal efficiency, low rare earth loss rate, and high rare earth loss rate, so as to promote full effect, enhance dispersion force, and strengthen purification and removal. Effect

Active Publication Date: 2022-03-01
JIANGXI UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the problems of low purification and impurity removal efficiency, high cost, serious ammonia nitrogen pollution, and high rare earth loss rate of ionic rare earth ore leachate, the purpose of the present invention is to provide a rare earth A New Method of Purification and Impurity Removal with Low Loss Rate

Method used

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  • Method for purifying and removing impurities from ionic rare earth ore leachate
  • Method for purifying and removing impurities from ionic rare earth ore leachate

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Effect test

Embodiment 1

[0033] 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 685.43 mg / L, and the impurity Al 3+ The content is 235.58mg / L, impurity Fe 3+ The content is 56.72mg / L. The impurity Al in the leaching solution obtained by the traditional impurity removal process 3+ The removal rate is 86.32%, Fe 3+ The removal rate is 81.28%, and the loss rate of rare earth in sedimentation residue is 8.74%.

[0034] Adopt the method for purifying and removing impurities of a kind of ionic rare earth ore leachate of the present invention to carry out impurity removal, the impurity removal process comprises adding cocoyl glucoside as impurity remover, and its impurity removal step is:

[0035] (1) Mix and stir the ionic rare earth ore leaching solution in a beaker, and the stirring intensity is 200r / min;

[0036] (2) Add 50% of the liquid-phase impurity-...

Embodiment 2

[0040]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 648.26mg / L, the content of impurity aluminum ions is 214.45mg / L, and the content of impurity iron ions is 48.66mg / L. The impurity Al in the leaching solution obtained by the traditional impurity removal process 3+ The removal rate is 88.53%, Fe 3+ The removal rate was 84.31%, and the rare earth loss rate in the sedimentation residue was 7.15%.

[0041] Adopt the method for purifying and removing impurities of a kind of ionic rare earth ore leachate of the present invention to carry out impurity removal, the impurity removal process comprises adding cocoyl glucoside as impurity remover, and its impurity removal step is:

[0042] (1) Mix and stir the ionic rare earth ore leaching solution in a beaker, and the stirring intensity is 300r / min;

[0043] (2) Add 55% liquid-phase impu...

Embodiment 3

[0047] 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 672.48mg / L, the content of impurity aluminum ions is 232.76mg / L, and the content of impurity iron ions is 52.15mg / L. The impurity Al in the leaching solution obtained by the traditional impurity removal process 3+ The removal rate is 85.26%, Fe 3+ The removal rate is 83.15%, and the loss rate of rare earth in sedimentation residue is 8.27%.

[0048] Adopt the method for purifying and removing impurities of a kind of ionic rare earth ore leachate of the present invention to carry out impurity removal, the impurity removal process comprises adding cocoyl glucoside as impurity remover, and its impurity removal step is:

[0049] (1) Mix and stir the ionic rare earth ore leaching solution in a beaker, and the stirring intensity is 200r / min;

[0050] (2) Add 60% of the liquid-phase...

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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 purifying and removing impurities from leachate of ionic rare earth ores. Background technique [0002] Rare earth is the general term for seventeen metal elements including lanthanides, scandium and yttrium in the periodic table of elements. There are 250 kinds of rare earth ores in nature, but there are only more than 10 kinds of industrial minerals suitable for the current dressing and smelting conditions. Rare earths have special physical and chemical properties. Different energy level orbitals that are not filled by rare earth ions are conducive to accepting lone electron pairs and forming hybridization to delocalize π electrons, thereby improving the magnetic properties, dispersibility, mass transfer, and oxygen storage / release (nitrogen / sulfur) properties of the material , so that rare earth materials play an important role in modern high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B59/00C22B3/44
CPCC22B59/00C22B3/44Y02P10/20
Inventor 罗仙平何坤忠张永兵周贺鹏谢帆鑫龚磊
Owner JIANGXI UNIV OF SCI & TECH
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