A kind of method for preparing high-purity thulium, high-purity ytterbium and high-purity lutetium

A technology of thulium, ytterbium, lutetium and ytterbium chloride, which is applied in the field of preparing high-purity thulium, high-purity ytterbium and high-purity lutetium, can solve the problem that the product purity does not reach 5N level, and achieve acid-base consumption saving, acid-base consumption reduction, The effect of high yield

Active Publication Date: 2021-05-14
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
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Problems solved by technology

[0004] A method for preparing high-purity thulium, high-purity ytterbium and high-purity lutetium according to the present invention provides a method for separating thulium, ytterbium and lutetium concentrates, which has the disadvantages that the product purity does not reach 5N level, etc. Method for directly preparing 5N grade thulium chloride, 5N grade ytterbium chloride and 5N grade lutetium chloride in rare earth chloride aqueous solution

Method used

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  • A kind of method for preparing high-purity thulium, high-purity ytterbium and high-purity lutetium

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Effect test

Embodiment 1

[0024] The C272 organic phase is a sulfonated kerosene solution of the extractant C272, wherein the volume percentage of C272 is 30%, the volume percentage of isooctyl alcohol is 10%, and the volume percentage of the sulfonated kerosene solution is 60%. When used, a general saponification method must be adopted to obtain the corresponding rare earth saponified organic phase after corresponding saponification.

[0025] The concentrations of related rare earth ions in the rare earth chloride aqueous solution of thulium, ytterbium and lutetium concentrates are divided into: Er 0.000080g / L, Tm 18.0g / L, Yb 120.0g / L, Lu 26.0g / L.

[0026] 1) Tm / TmYb / YbLu / Lu four-outlet fractional distillation extraction separation system

[0027] The 2N grade thulium saponification C272 organic phase is used as the extraction organic phase, the rare earth chloride aqueous solution of thulium, ytterbium and lutetium enrichment is used as the feed solution, and 3.0mol / L HCl is used as the washing acid....

Embodiment 2

[0036] The C272 organic phase is a sulfonated kerosene solution of the extractant C272, wherein the volume percentage of C272 is 30%, the volume percentage of isooctyl alcohol is 10%, and the volume percentage of the sulfonated kerosene solution is 60%. When used, a general saponification method must be adopted to obtain the corresponding rare earth saponified organic phase after corresponding saponification.

[0037] The concentrations of related rare earth ions in the rare earth chloride aqueous solution of thulium, ytterbium and lutetium concentrates are divided into: Er 0.000050g / L, Tm 20.0g / L, Yb 125.0g / L, Lu 23.0g / L.

[0038] 1) Tm / TmYb / YbLu / Lu four-outlet fractional distillation extraction separation system

[0039] The 2N grade thulium saponification C272 organic phase is used as the extraction organic phase, the rare earth chloride aqueous solution of thulium, ytterbium and lutetium enrichment is used as the feed solution, and 3.0mol / L HCl is used as the washing acid....

Embodiment 3

[0048] The C272 organic phase is a sulfonated kerosene solution of the extractant C272, wherein the volume percentage of C272 is 30%, the volume percentage of isooctyl alcohol is 10%, and the volume percentage of the sulfonated kerosene solution is 60%. When used, a general saponification method must be adopted to obtain the corresponding rare earth saponified organic phase after corresponding saponification.

[0049] The relevant rare earth ion concentrations in the rare earth chloride aqueous solution of thulium, ytterbium and lutetium concentrates are divided into: Er 0.000010g / L, Tm22.0g / L, Yb 130.0g / L, Lu 20.0g / L.

[0050] 1) Tm / TmYb / YbLu / Lu four-outlet fractional distillation extraction separation system

[0051] The 2N grade thulium saponification C272 organic phase is used as the extraction organic phase, the rare earth chloride aqueous solution of thulium, ytterbium and lutetium enrichment is used as the feed solution, and 3.0mol / L HCl is used as the washing acid. Th...

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Abstract

The present invention is a method for preparing high-purity thulium, high-purity ytterbium and high-purity lutetium. The rare earth chloride aqueous solution of thulium-ytterbium-lutetium enrichment is used as feed liquid, C272 is used as extraction agent, and isooctanol is used as organic phase modifier; It is composed of Tm / TmYb / YbLu / Lu four-outlet fractionation extraction and separation system, Tm / Yb full-load two-feeder fractional distillation and extraction system, and Yb / Lu two-feeder fractional distillation and extraction system; through the combination of three fractional distillation extraction and separation systems , directly obtain 5N grade thulium chloride, 5N grade ytterbium chloride and 5N grade lutetium chloride three separated products. The invention has the advantages of high product purity, high rare earth element yield, less acid-base consumption, short process flow, low separation cost and the like.

Description

technical field [0001] The invention relates to a method for preparing high-purity thulium, high-purity ytterbium and high-purity lutetium. Specifically, the rare earth chloride aqueous solution of thulium, ytterbium and lutetium concentrates is used as the feed liquid, C272 is used as the extraction agent, and isooctyl alcohol is used as the organic phase modification agent to achieve the separation between the three elements of thulium, ytterbium and lutetium, and obtain three high-purity products of 5N grade thulium chloride, 5N grade ytterbium chloride and 5N grade lutetium chloride. The specific technical field of the invention is the preparation of high-purity thulium, high-purity ytterbium and high-purity lutetium by fractional distillation extraction. Background technique [0002] Thulium, ytterbium and lutetium concentrates are intermediate products that must exist in the separation process of ion-adsorption rare earth ores in southern my country. There is no doubt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B59/00C22B3/38
CPCC22B59/00C22B3/3842Y02P10/20
Inventor 钟学明李艳容
Owner NANCHANG HANGKONG UNIVERSITY
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