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Method of preparing high purity thulium, high purity ytterbium and high purity lutecium

A technology of thulium, ytterbium, lutetium and ytterbium chloride, applied in the direction of improving process efficiency, etc., can solve the problem that the product purity does not reach 5N level

Active Publication Date: 2019-10-18
NANCHANG HANGKONG UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Method of preparing high purity thulium, high purity ytterbium and high purity lutecium

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Experimental program
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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 composition of the rare earth chloride aqueous solution of thulium, ytterbium and lutetium enrichment is: Er 0.000080g / L, Tm 18.0g / L, Yb120.0g / L, Lu 26.0g / L.

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

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

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 composition of the rare earth chloride aqueous solution of thulium, ytterbium and lutetium enrichment is: Er 0.000050g / L, Tm 20.0g / L, Yb125.0g / L, Lu 23.0g / L.

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

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

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 composition of the rare earth chloride aqueous solution of thulium, ytterbium and lutetium enrichment is: Er 0.000010g / L, Tm 22.0g / L, Yb130.0g / L, Lu 20.0g / L.

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

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

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Abstract

The invention relates to a method of preparing high purity thulium, high purity ytterbium and high purity lutecium. By taking a rare earth chloride aqueous solution of thulium, ytterbium and luteciumconcentrate as a feed liquid, C272 as an extractant and isooctanol as an organic phase modifier, a system is formed by a Tm / TmYb / YbLu / Lu four outlet fractional extraction separation system, a Tm / Yb full load two feed inlet fractional extraction separation system and a Yb / Lu two feed inlet fractional extraction separation system. By combining the three fractional extraction separation systems, three separated products of 5N grade thulium chloride, 5N grade ytterbium chloride and 5N grade lutecium chloride are obtained directly. The method has the advantages of being high in product purity, highin yield of rare earth elements, small in acid and alkali consumption, short in process flow, low in 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 Applications(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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