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Extraction column chromatography for separating La, Ce, Pr and Nd mixed rare earth ions

A mixed rare earth and extraction column technology, applied in the field of extraction column chromatography for separating Ce, La, Pr, Nd mixed rare earth ions, can solve the problems of complicated separation process, low separation efficiency, large amount of acid and alkali, etc. High efficiency, high purity of rare earth, simple and practical effect

Inactive Publication Date: 2016-01-06
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims to solve the technical problems of complex separation process of La, Ce, Pr, and Nd mixed rare earth ions, low separation efficiency, and large amount of acid and alkali. ion method

Method used

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  • Extraction column chromatography for separating La, Ce, Pr and Nd mixed rare earth ions
  • Extraction column chromatography for separating La, Ce, Pr and Nd mixed rare earth ions

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] (1): Preparation of chromatographic column packing:

[0024] Weigh 80g of diatomite with a particle size of 100 mesh and place it in a 500mL beaker, add about 200mL of deionized water, stir for 30 minutes, then filter with suction, discard the filtrate; add about 200mL of absolute ethanol, stir for 30 minutes, then filter with suction, discard Remove the filtrate; add about 200mL deionized water, stir for 30 minutes, then suction filter, discard the filtrate; soak the washed diatomite with 200mL10% hydrochloric acid solution for 24 hours; wash the diatomite after acid leaching with deionized water until medium Dry after sex for later use.

[0025] Weigh 20g of [A336][BDGA] ionic liquid, dilute with 60g petroleum ether / acetone (V / V=8 / 2) diluent, mix with 60g of activated diatomaceous earth, stir for 12 hours, then rotary evaporate Remove the thinner and dry for later use.

[0026] (2): Preparation of mixed rare earth samples:

[0027] Preparation concentration is 0.10...

Embodiment 2

[0033] (1): Preparation of chromatographic column packing:

[0034] Weigh 40g of diatomite with a particle size of 300 mesh and place it in a 500mL beaker, add about 200mL of deionized water, stir for 30 minutes, then filter with suction, discard the filtrate; add about 200mL of absolute ethanol, stir for 30 minutes, then filter with suction, discard Remove the filtrate; add about 200mL deionized water, stir for 30 minutes, then suction filter, discard the filtrate; soak the washed diatomite with 200mL10% hydrochloric acid solution for 24 hours; wash the diatomite after acid leaching with deionized water until medium Dry after sex for later use.

[0035] Weigh 15g of [A336][BDGA] ionic liquid, dilute with 30g of kerosene / ethanol (V / V=8 / 2) diluent, mix evenly with 30g of activated diatomaceous earth, stir for 12 hours, and remove by rotary evaporation Thinner, dried for later use.

[0036] (2): Preparation of mixed rare earth samples:

[0037] Prepare the nitric acid solutio...

Embodiment 3

[0043] (1): Preparation of chromatographic column packing:

[0044]Weigh 50g of diatomite with a particle size of 200 mesh and place it in a 500mL beaker, add about 200mL of deionized water, stir for 30 minutes, then filter with suction, discard the filtrate; add about 200mL of absolute ethanol, stir for 30 minutes, then filter with suction, discard Remove the filtrate; add about 200mL deionized water, stir for 30 minutes, then suction filter, discard the filtrate; soak the washed diatomite with 200mL10% hydrochloric acid solution for 24 hours; wash the diatomite after acid leaching with deionized water until medium Dry after sex for later use.

[0045] Weigh 15g [A336][BDGA] ionic liquid, dilute with 60g petroleum ether / ethanol (V / V=8 / 2) diluent, mix with 60g activated diatomaceous earth, stir for 12 hours, then rotary evaporate Remove ethanol and dry for later use.

[0046] (2): Preparation of mixed rare earth samples:

[0047] Preparation concentration is 0.01mol / L respe...

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Abstract

The invention provides an extraction column chromatography for separating La, Ce, Pr and Nd mixed rare earth ions, and belongs to the field of rare earth separation and purification. The extraction column chromatography for separating the La, Ce, Pr and Nd mixed rare earth ions comprises the steps that a chromatographic column is prepared through [A336][BDGA] ionic liquid, and the La, Ce, Pr and Nd mixed rare earth ions are separated through leaching of leacheate. According to the extraction column chromatography for separating the La, Ce, Pr and Nd mixed rare earth ions, extraction efficiency is high, selectivity is good, operation is easy and convenient, chromatographic column packing can be recycled, no pollution is produced to the environment, the separated rare earth is high in purity, and the requirement of the current society for the purity of a single rare earth oxide can be met.

Description

technical field [0001] The invention relates to the field of rare earth separation and purification, in particular to an extraction column chromatography for separating mixed rare earth ions of La, Ce, Pr and Nd. Background technique [0002] Nowadays, rare earth has become an extremely important strategic resource. Rare earth elements have been widely used in petroleum, chemical industry, metallurgy, textile, ceramics, glass, permanent magnet materials and other fields. However, the excellent optical, electrical, magnetic, catalytic and other intrinsic properties of each rare earth element often require a single high-purity rare earth to fully reflect. my country is very rich in rare earth minerals, but rare earth elements have similar chemical properties and coexist in minerals. Therefore, the separation and purification of rare earth elements has become an important process in the rare earth industry. The extraction method is widely used in the existing rare earth separa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B59/00C22B3/24
CPCY02P10/20
Inventor 弓爱君潘裕红邱丽娜谢艳萍杨静赵云波
Owner UNIV OF SCI & TECH BEIJING
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