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a p 204 Preparation method and application of doped polythiophene light rare earth solid phase extractant

A solid-phase extraction agent, polythiophene technology, applied in the direction of improving process efficiency, etc., can solve the problems of easy to produce emulsification, difficult to handle organic waste liquid, easy to produce third phase, and achieve difficult emulsification, low price, and reduced The effect of emissions

Active Publication Date: 2020-09-11
NORTHEASTERN UNIV LIAONING
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] At present, there are many problems in the process of extracting rare earth elements by solvent extraction, such as volatilization of organic solvents, complicated separation operations, easy emulsification, secondary pollution, third phase, and large amounts of organic waste that are difficult to handle, etc., which need to be solved urgently

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  • a p <sub>204</sub> Preparation method and application of doped polythiophene light rare earth solid phase extractant
  • a p <sub>204</sub> Preparation method and application of doped polythiophene light rare earth solid phase extractant
  • a p <sub>204</sub> Preparation method and application of doped polythiophene light rare earth solid phase extractant

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Embodiment 1

[0034] Embodiment 1: as figure 1 As shown, in this embodiment a P 204 The preparation and method thereof of doped polythiophene light rare earth solid-phase extraction agent are carried out according to the following steps:

[0035] (1) to contain La 3+ The rare earth chloride solution is the raw material solution, La 3+ The concentration of the rare earth solution is 0.01mol / L, and the pH of the rare earth solution is adjusted to 3.00 with inorganic acid;

[0036] (2) The rare earth raw material liquid is mixed with a solid extractant for extraction, P 204 The ratio with polythiophene is 0.30ml / g, the dosage of solid phase extraction is 0.2g, the rotation speed is 200r / min, the extraction time is 30min, and the extraction temperature is 25°C. After the extraction is completed, the mixed solution is filtered through a suction filtration device to separate the raffinate and the solid phase extractant. The concentration of the rare earth in the aqueous phase was measured, a...

Embodiment 2

[0038] (1) to contain La 3+ The rare earth chloride solution is the raw material solution, La 3+ The concentration of the rare earth solution is 0.005mol / L, and the pH of the rare earth solution is adjusted to 5.00 with inorganic acid;

[0039] (2) The rare earth raw material liquid is mixed with a solid extractant for extraction, P 204 The ratio with polythiophene is 0.70ml / g, the amount of solid extractant is 0.2g, the rotation speed is 200r / min, the extraction time is 30min, and the extraction temperature is 25°C. After the extraction is completed, the mixed solution is filtered through a suction filtration device to separate the raffinate and the solid phase extractant. The rare earth concentration in the aqueous phase was measured, and the extraction rate was calculated to be 61.9%.

Embodiment 3

[0041] (1) to contain La 3+ The rare earth chloride solution is the raw material solution, La 3+ The concentration of the rare earth solution is 0.01mol / L, and the pH of the rare earth solution is adjusted to 3.00 with inorganic acid;

[0042] (2) The rare earth raw material liquid is mixed with a solid extractant for extraction, P 204 The ratio with polythiophene is 0.30ml / g, the dosage of solid phase extraction is 0.5g, the rotation speed is 400r / min, the extraction time is 30min, and the extraction temperature is 25°C. After the extraction is completed, the mixed solution is filtered through a suction filtration device to separate the raffinate and the solid phase extractant. The rare earth concentration in the aqueous phase was measured, and the extraction rate was calculated to be 71.42%.

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Abstract

The invention belongs to the field of rare earth hydrometallurgy and the technical field of solid phase extraction, and specifically relates to a P 204 Preparation method and application of doped polythiophene light rare earth solid-phase extractant, through extraction agent P 204 The solid-phase extractant prepared by doping polythiophene extracts light rare earth elements, and the doped polythiophene solid powder is used as the solid-phase extractant, and the rare earth elements are transferred from the rare earth solution to the solid powder by solid-liquid extraction, and the extraction is carried out by centrifugation. Separation to realize the extraction of rare earths from aqueous solution.

Description

technical field [0001] The invention belongs to the field of rare earth hydrometallurgy and the technical field of solid phase extraction, and specifically relates to a P 204 Preparation method and application of doped polythiophene light rare earth solid-phase extractant, through extraction agent P 204 Extraction of light rare earth elements with solid phase extractant prepared by doping polythiophene. Background technique [0002] Rare earth refers to the general term of 17 metal elements including lanthanides, scandium and yttrium. As a non-renewable scarce strategic resource, it is known as "industrial vitamin" and "mother of new materials", and is widely used in cutting-edge technology and military fields. Rare earth elements are widely distributed in the earth's crust, but very unevenly. my country is rich in rare earth minerals, ranking first in four worlds: first in resource reserves, first in output, first in sales, and first in applications. Rare earth elements...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/40C22B59/00
CPCC22B59/00C22B3/409Y02P10/20
Inventor 李勇赵曼任静
Owner NORTHEASTERN UNIV LIAONING
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