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Preparation method of lutetium nitrate feed liquid

A technology of lutetium nitrate and feed liquid is applied in the preparation/processing of rare earth metal compounds, rare earth metal nitrate and other directions, which can solve the problems of high chloride ion and sodium ion content, complicated production process and the like

Pending Publication Date: 2020-12-04
CHALCO GUANGXI RARE EARTH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In view of the above disadvantages, the present invention discloses a preparation method of lutetium nitrate feed liquid, which solves the problems of complicated production process of existing lutetium nitrate feed liquid and high content of chloride ions and sodium ions in the obtained lutetium nitrate feed liquid

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  • Preparation method of lutetium nitrate feed liquid

Examples

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Effect test

Embodiment 1

[0052] A preparation method for lutetium nitrate feed liquid, it comprises the steps:

[0053] (1) Preparation of organic extractant: Mix naphthenic acid, octanol, and kerosene uniformly to obtain an organic extractant, wherein the volume ratio of naphthenic acid: octanol: kerosene is 1:1:2;

[0054] (2) Saponification of the organic extractant: add a sodium hydroxide solution with a concentration of 6 mol / L to the organic extractant obtained in step (1), then carry out the saponification reaction under shaking conditions for 15 minutes, and control to obtain a saponification degree of 0.40 organic extractant;

[0055] (3) Rare earth saponification: Rare earth saponification is carried out in a cascade reaction, which includes the first stage extraction section, 4 intermediate extraction sections and the final extraction section in series, and the flow rate of the organic phase in each extraction section is 25L / min, the flow rate ratio of the organic phase to the aqueous pha...

Embodiment 2

[0081] A preparation method for lutetium nitrate feed liquid, it comprises the steps:

[0082] (1) Preparation of organic extractant: Mix naphthenic acid, octanol, and kerosene uniformly to obtain an organic extractant, wherein the volume ratio of naphthenic acid: octanol: kerosene is 1:1:2;

[0083] (2) Saponification of the organic extractant: add a sodium hydroxide solution with a concentration of 6 mol / L to the organic extractant obtained in step (1), then carry out the saponification reaction under shaking conditions for 10 minutes, and control to obtain a saponification degree of 0.42 organic extractant;

[0084] (3) Rare earth saponification: Rare earth saponification is carried out in a cascade reaction, including the first stage extraction section, 2 intermediate extraction sections and the final stage extraction section in series, and the flow rate of the organic phase in each extraction section is 25L / min, the flow rate ratio of the organic phase to the aqueous ph...

Embodiment 3

[0108] A preparation method for lutetium nitrate feed liquid, it comprises the steps:

[0109] (1) Preparation of organic extractant: Mix naphthenic acid, octanol, and kerosene uniformly to obtain an organic extractant, wherein the volume ratio of naphthenic acid: octanol: kerosene is 1:1:2;

[0110] (2) Saponification of the organic extractant: add a sodium hydroxide solution with a concentration of 6 mol / L to the organic extractant obtained in step (1), then carry out the saponification reaction under shaking conditions for 12 minutes, and control to obtain a saponification degree of 0.45 organic extractant;

[0111] (3) Rare earth saponification: Rare earth saponification is carried out in a cascade reaction, including the first stage extraction section, 6 intermediate extraction sections and the final stage extraction section in series, and the flow rate of the organic phase in each extraction section is 30L / min, the flow rate ratio of the organic phase to the aqueous ph...

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Abstract

The invention discloses a preparation method of lutetium nitrate feed liquid. The preparation method comprises the following steps: mixing naphthenic acid, octanol and kerosene to obtain an organic extraction agent; then adding a sodium hydroxide solution into the organic extraction agent, and carrying out saponification reaction to obtain a saponified organic extraction agent; then carrying out rare earth saponification in a cascade reaction mode, and mixing and reacting the obtained saponification organic extraction agent and lutetium chloride feed liquid and then standing for phase splitting; then adopting a multi-stage washing mode, taking an organic phase obtained in the last-stage extraction section to be mixed with a water phase or nitric acid in a next-stage washing section for reaction, and then standing for phase splitting; and mixing the organic phase obtained in the last-stage washing section with the water phase or nitric acid in the next-stage back extraction section in amulti-stage back extraction mode, reacting, standing, and carrying out phase splitting to obtain a water phase, namely lutetium nitrate feed liquid, in the last-stage back extraction section. The method effectively solves the problems that the existing lutetium nitrate feed liquid production process is complicated, and the content of chloride ions and sodium ions in the obtained lutetium nitratefeed liquid is high.

Description

technical field [0001] The invention belongs to the technical field of preparation of rare earth materials, and in particular relates to a preparation method of lutetium nitrate liquid. Background technique [0002] Rare earths are indispensable and important materials in the high-tech field. With the continuous development of new materials, the application fields of rare earths are becoming wider and wider. Among them, lutetium oxide is mainly used in the manufacture of magnetic materials, optical glass, ceramic colorants, laser materials, luminescent materials, and electronic materials, such as lutetium oxide-based transparent ceramic scintillator materials, which are especially suitable for applications in static digital imaging and fluorescent inspection , is also a new type of polycrystalline laser working medium, and will play an important role in the future digital radiography technology system. Now lutetium oxide-based transparent ceramics often use lutetium nitrate ...

Claims

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Application Information

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IPC IPC(8): C01F17/276C01F17/17
CPCC01F17/276C01F17/17
Inventor 欧小萍俞志春胡建林张亮玖韦世强潘冬海杨金涛周慧荣江泽佐庄辉马宗云羊多彦雷利利潘务霞谢华玉覃世富蓝灵江蒙泽景李宽
Owner CHALCO GUANGXI RARE EARTH DEV CO LTD
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