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Method for extracting and separating thulium, ytterbium and lutetium enrichment matter from solvent

A technology of enrichment, thulium, ytterbium and lutetium, which is applied in chemical instruments and methods, rare earth metal compounds, inorganic chemistry, etc., can solve the problems of acid-base consumption, high acid-base consumption, and insufficient purity, and achieve low acid-base consumption, The effect of reducing acid and alkali consumption and shortening the process flow

Active Publication Date: 2019-10-29
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The separation and purification of 4N grade ytterbium to 5N grade by solvent extraction also requires further consumption of acid and alkali
Therefore, the existing solvent extraction method for separating thulium, ytterbium and lutetium concentrates has the disadvantages that the product purity of ytterbium is not high enough, and the consumption of acid and alkali is relatively large.

Method used

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  • Method for extracting and separating thulium, ytterbium and lutetium enrichment matter from solvent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] C272 organic phase: the volume percentage of C272 is 30%, the volume percentage of isooctyl alcohol is 10%, and the volume percentage of sulfonated kerosene 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 aqueous solution of thulium, ytterbium and lutetium chloride concentrates is: Er 0.00080g / L, Tm 17.0g / L, Yb 125.0g / L, Lu 25.0g / L.

[0026] 1) Tm / TmYb / YbLu / Lu three-in and four-out fractional distillation extraction separation system

[0027] The 4N thulium saponification C272 organic phase enters the Tm / TmYb / YbLu / Lu three-inlet and four-out fractionation extraction separation system from the first stage, and the first stage water phase from the Tm / Yb full-load fractionation extraction separation system 2N Thulium chloride is fed from the first stage The inlet enters the Tm / TmYb / YbLu / Lu three-inlet and four-out fractional distillation extr...

Embodiment 2

[0036] C272 organic phase: the volume percentage of C272 is 30%, the volume percentage of isooctyl alcohol is 10%, and the volume percentage of sulfonated kerosene 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 aqueous solution of thulium, ytterbium and lutetium chloride concentrates is: Er 0.00050g / L, Tm 19.0g / L, Yb 130.0g / L, Lu 22.0g / L.

[0038] 1) Tm / TmYb / YbLu / Lu three-in and four-out fractional distillation extraction separation system

[0039] The 4N thulium saponification C272 organic phase enters the Tm / TmYb / YbLu / Lu three-inlet and four-out fractionation extraction separation system from the first stage, and the first stage water phase from the Tm / Yb full-load fractionation extraction separation system 2N Thulium chloride is fed from the first stage The inlet enters the Tm / TmYb / YbLu / Lu three-inlet and four-out fractional distillation extr...

Embodiment 3

[0048] C272 organic phase: the volume percentage of C272 is 30%, the volume percentage of isooctyl alcohol is 10%, and the volume percentage of sulfonated kerosene 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 aqueous solution of thulium, ytterbium and lutetium chloride concentrates is: Er 0.00030g / L, Tm 21.0g / L, Yb 125.0g / L, Lu 19.0g / L.

[0050] 1) Tm / TmYb / YbLu / Lu three-in and four-out fractional distillation extraction separation system

[0051]The 4N thulium saponification C272 organic phase enters the Tm / TmYb / YbLu / Lu three-inlet and four-out fractionation extraction separation system from the first stage, and the first stage water phase from the Tm / Yb full-load fractionation extraction separation system 2N Thulium chloride is fed from the first stage The inlet enters the Tm / TmYb / YbLu / Lu three-inlet and four-out fractional distillation extra...

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Abstract

The invention relates to a method for extracting and separating a thulium, ytterbium and lutetium enrichment matter from a solvent. The method for extracting and separating thulium, ytterbium and lutetium enrichment matter from the solvent comprises the steps that a thulium, ytterbium and lutetium chloride enrichment matter aqueous solution is used as a raw material, C272 is used as an extractingagent, and isooctyl alcohol is an organic phase modifying agent, the thulium, ytterbium and lutetium enrichment matter is composed of three fractionation extraction systems, that is, Tm / TmYb / YbLu / Luthree-in four-out fractionation extraction separation system, a Tm / Yb full load fractionation extraction separation system and a Yb / Lu fractionation extraction separation system. Through the combination of the three fractionation extraction systems, three separation products of 4N grade thulium chloride, 5N grade ytterbium chloride and 4N grade lutetium chloride are directly obtained. The method for extracting and separating thulium, ytterbium and lutetium enrichment matter from the solvent has the advantages of high purity of a target separation product, high yield of rare earth element thulium, ytterbium and lutetium, less acid-base consumption, short process flow and low separation cost.

Description

technical field [0001] The invention relates to a method for solvent extraction and separation of thulium, ytterbium and lutetium concentrates. Specifically, an aqueous solution of thulium, ytterbium, and lutetium chloride concentrates is used as a feed liquid, C272 is used as an extraction agent, and isooctyl alcohol is used as an organic phase modifier to realize light rare earth The separation between the three elements of thulium, ytterbium and lutetium obtained three products of 4N grade thulium chloride, 5N grade ytterbium chloride and 4N grade lutetium chloride. The specific technical field of the present invention is separation of thulium, ytterbium and lutetium concentrates by solvent extraction. Background technique [0002] Ion-adsorption type rare earth ore is an important rare earth raw material, and the ore must obtain thulium, ytterbium and lutetium concentrates in the solvent extraction separation process. Thulium, ytterbium and lutetium concentrates are int...

Claims

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Application Information

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IPC IPC(8): C01F17/00
CPCC01P2006/80C01F17/10C01F17/271
Inventor 钟学明刘俊辰奉凤娟徐志宇
Owner NANCHANG HANGKONG UNIVERSITY
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