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A kind of process flow of group separation of medium yttrium and europium-rich rare earth ore with four outlets

A technology of process flow and rare earth ore, which is applied in the field of process flow of yttrium and europium-rich rare earth ore in four-outlet group separation, can solve the problem of high acid and alkali consumption, achieve the effects of reducing acid and alkali consumption, high separation efficiency and high yield

Inactive Publication Date: 2020-11-27
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the high acid-base consumption in the existing process flow of yttrium-europium-rich rare earth ore in separation, the present invention establishes a process flow of yttrium-europium-rich rare earth ore in group separation with four outlets, and obtains 5N-grade LaCePrNd, 4N-grade SmEuGd, and 4N-grade TbDy and 4N-grade HoYErTmYbLu four grouped products to reduce the acid-base consumption of yttrium-europium-rich rare earth ore in separation

Method used

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  • A kind of process flow of group separation of medium yttrium and europium-rich rare earth ore with four outlets

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Embodiment 1

[0026] P507 organic phase: kerosene solution of extractant P507, wherein the volume percentage of P507 is 30%, the volume percentage of isooctyl alcohol is 10%, and the volume percentage of kerosene is 60%. When used, a general saponification method must be adopted to obtain the corresponding rare earth saponified organic phase after corresponding saponification.

[0027] The rare earth chloride aqueous solution of medium yttrium and europium-rich rare earth ore: in terms of rare earth elements, the composition of the rare earth chloride aqueous solution of medium yttrium and europium-rich rare earth ore is: the molar fraction of LaCePrNd is 0.50, the molar fraction of SmEuGd is 0.12, and the molar fraction of TbDy is 0.070, and the mole fraction of HoYErTmYbLu is 0.31.

[0028] 1) La~Nd / SmEuGd / TbDy / Ho~Lu two-in and four-out fractional distillation extraction separation system

[0029] The 5N lanthanum cerium praseodymium neodymium saponification P507 organic phase is used as...

Embodiment 2

[0039] P507 organic phase: sulfonated kerosene solution of extractant P507, wherein the volume percentage of P507 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.

[0040] The rare earth chloride aqueous solution of medium yttrium and europium-rich rare earth ore: calculated as rare earth elements, the composition of the rare earth chloride aqueous solution of medium yttrium and europium-rich rare earth ore is: the molar fraction of LaCePrNd is 0.55, the molar fraction of SmEuGd is 0.10, and the molar fraction of TbDy is 0.060, and the mole fraction of HoYErTmYbLu is 0.29.

[0041] 1) La~Nd / SmEuGd / TbDy / Ho~Lu two-in and four-out fractional distillation extraction separation system

[0042] The 5N lanthanum cerium praseodymium neodymium saponification P507 or...

Embodiment 3

[0052] P507 organic phase: kerosene solution of extractant P507, wherein the volume percentage of P507 is 30%, the volume percentage of isooctyl alcohol is 10%, and the volume percentage of kerosene is 60%. When used, a general saponification method must be adopted to obtain the corresponding rare earth saponified organic phase after corresponding saponification.

[0053] The rare earth chloride aqueous solution of medium yttrium and europium-rich rare earth ore: calculated as rare earth elements, the composition of the rare earth chloride aqueous solution of medium yttrium and europium-rich rare earth ore is: the molar fraction of LaCePrNd is 0.60, the molar fraction of SmEuGd is 0.080, and the molar fraction of TbDy is 0.050, and the mole fraction of HoYErTmYbLu is 0.27.

[0054] 1) La~Nd / SmEuGd / TbDy / Ho~Lu two-in and four-out fractional distillation extraction separation system

[0055] The 5N lanthanum cerium praseodymium neodymium saponification P507 organic phase is used...

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Abstract

A process flow for group separation of medium yttrium and europium-rich rare earth ore with four outlets, using the rare earth chloride aqueous solution of medium yttrium and europium-rich rare earth ore as the feed liquid, P507 as the extraction agent, and isooctyl alcohol as the modifier; specifically, it consists of three fractional distillation The composition of the extraction system is La~Nd / SmEuGd / TbDy / Ho~Lu two-inlet and four-outlet fractionation extraction separation system, SmEuGd / TbDy fractionation extraction separation system and TbDy / Ho~Lu two-inlet fractionation extraction separation system. Through the combination of three fractional distillation extraction systems, the rare earth elements were divided into four groups, namely LaCePrNd, SmEuGd, TbDy and HoYErTmYbL; four grouped separation products of 5N grade LaCePrNd, 4N grade SmEuGd, 4N grade TbDy and 4N grade HoYErTmYbLu were obtained. The invention has the advantages of high purity of grouped separation products, high yield of rare earth elements, low acid and alkali consumption, low separation cost and the like.

Description

technical field [0001] The invention relates to a process flow for grouping separation of medium yttrium and europium-rich rare earth ore with four outlets. Specifically, the rare earth chloride aqueous solution of medium yttrium and europium-rich rare earth ore is used as a feed liquid, P507 is used as an extraction agent, and isooctyl alcohol is used as an organic phase modifier. , realize the group separation of four groups of rare earth elements LaCePrNd, SmEuGd, TbDy and HoYErTmYbLu, and obtain four group separation products of 5N grade LaCePrNd, 4N grade SmEuGd, 4N grade TbDy and 4N grade HoYErTmYbLu. The specific technical field of the present invention is separation of yttrium-europium-rich rare earth ore by fractional distillation extraction method. Background technique [0002] Medium yttrium and europium-rich rare earth ores are important raw materials for extracting medium and heavy rare earths, and solvent extraction is the preferred separation method. In order...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/38C22B59/00
CPCC22B59/00C22B3/3844Y02P10/20
Inventor 钟学明徐玉娜
Owner NANCHANG HANGKONG UNIVERSITY