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A simple method for co-production of pure lanthanum, rich cerium and pure yttrium

A cerium-rich and method technology, which is applied in the field of co-production of pure lanthanum, cerium-rich and pure yttrium, achieves the effects of improved stability, high degree of greenness and improved qualification rate

Inactive Publication Date: 2020-08-18
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by a kind of simple way of co-producing pure lanthanum, rich cerium and pure yttrium in the present invention is: reduce the acid-base consumption of preparing 4N grade lanthanum and preparing 4N grade yttrium

Method used

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  • A simple method for co-production of pure lanthanum, rich cerium and pure yttrium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The saponified P507+TBP organic phase is a kerosene solution of extractant P507 and modifier TBP, wherein the volume percentage of P507 is 30%, the volume percentage of TBP is 10%, and the saponification rate is 36%.

[0029] The pH of the lanthanum cerium chloride solution is 3, and the concentrations of rare earth elements are: La 120.0g / L, Ce 10.0g / L.

[0030] The pH of lanthanum cerium yttrium chloride is 3, and the concentrations of rare earth elements are: La 3.0g / L, Ce 1.0g / L, Y 85.0g / L.

[0031] Step 1, full-load quasi-fractionation extraction and separation of La / Ce:

[0032]The saponified P507+TBP organic phase is used as the extraction organic phase, the lanthanum cerium chloride solution is the first feed liquid, and the cerium chloride-rich aqueous solution obtained from the first-stage outlet water phase of the LaCe / Y full-load fractionation extraction system is used as the detergent. The saponified P507+TBP organic phase enters the La / Ce full-load quasi-...

Embodiment 2

[0042] The saponified P507+TBP organic phase is a kerosene solution of extractant P507 and modifier TBP, wherein the volume percentage of P507 is 30%, the volume percentage of TBP is 10%, and the saponification rate is 36%.

[0043] The pH of the lanthanum cerium chloride solution is 4, and the concentrations of rare earth elements are: La 100.0g / L, Ce 15.0g / L.

[0044] The pH of lanthanum cerium yttrium chloride is 4, and the concentrations of rare earth elements are: La 10.0g / L, Ce 2.0g / L, Y 80.0g / L.

[0045] Step 1, full-load quasi-fractionation extraction and separation of La / Ce:

[0046] The saponified P507+TBP organic phase is used as the extraction organic phase, the lanthanum cerium chloride solution is the first feed liquid, and the cerium chloride-rich aqueous solution obtained from the first-stage outlet water phase of the LaCe / Y full-load fractionation extraction system is used as the detergent. The saponified P507+TBP organic phase enters the La / Ce full-load quas...

Embodiment 3

[0056] The saponified P507+TBP organic phase is a kerosene solution of extractant P507 and modifier TBP, wherein the volume percentage of P507 is 30%, the volume percentage of TBP is 10%, and the saponification rate is 36%.

[0057] The pH of the lanthanum cerium chloride solution is 2, and the concentrations of rare earth elements are: La 140.0g / L, Ce 5.0g / L.

[0058] The pH of lanthanum cerium yttrium chloride is 2, and the concentrations of rare earth elements are: La 1.0g / L, Ce 0.50g / L, Y 90.0g / L.

[0059] Step 1, full-load quasi-fractionation extraction and separation of La / Ce:

[0060] The saponified P507+TBP organic phase is used as the extraction organic phase, the lanthanum cerium chloride solution is the first feed liquid, and the cerium chloride-rich aqueous solution obtained from the first-stage outlet water phase of the LaCe / Y full-load fractionation extraction system is used as the detergent. The saponified P507+TBP organic phase enters the La / Ce full-load quasi...

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Abstract

The invention discloses a simple method for co-producing pure lanthanum, rich cerium and pure yttrium. The present invention uses P507 as extraction agent, TBP as modifier, lanthanum cerium chloride solution as the first feed liquid, and lanthanum cerium yttrium chloride solution as the second feed liquid; Fractional distillation extraction separation LaCe / Y and Y stripping section consists of three steps. An extraction and separation process flow of the present invention simultaneously obtains three products of 4N grade lanthanum chloride aqueous solution, 4N grade yttrium chloride aqueous solution and cerium-rich chloride aqueous solution. The invention can not only reduce the consumption of acid and alkali for preparing 4N-grade lanthanum and 4N-grade yttrium, but also improve the qualified rate of 4N-grade lanthanum and 4N-grade yttrium to a certain extent.

Description

technical field [0001] A kind of simple way of co-producing pure lanthanum, rich cerium and pure yttrium of the present invention relates to taking P507 as extraction agent, TBP as modifier, lanthanum cerium chloride solution as the first feed liquid, lanthanum cerium chloride yttrium solution as The second kind of material liquid is prepared three kinds of products: 4N grade lanthanum chloride aqueous solution, 4N grade yttrium chloride aqueous solution and cerium-rich chloride aqueous solution. The specific technical field to which the invention belongs is the preparation of 4N-grade lanthanum chloride, 4N-grade yttrium chloride and cerium-rich chloride by a fractional distillation extraction method. Background technique [0002] Lanthanum-cerium chloride solution and lanthanum-cerium-yttrium chloride solution are usually obtained in the separation process of ion-adsorption rare earth ores. Lanthanum cerium chloride is one of the main raw materials for preparing 4N-grade ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01F17/17C01F17/271C01F17/206C01F17/247C22B59/00
CPCC01F17/271C01P2006/80C22B59/00
Inventor 徐玉娜李艳容钟学明
Owner NANCHANG HANGKONG UNIVERSITY
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