Ultrasonic leaching-extracting separation method for yttrium-rich rare earth mine

A technology of yttrium-rich rare earth and separation method, which is applied in the field of separation of yttrium-rich rare earth ore and separation of yttrium-rich rare earth ore, which can solve problems such as leaching, low extraction rate and efficiency, slow extraction rate, and difficult separation of impurities , to achieve the effect of improving the leaching-extraction process, increasing the rate and efficiency, and increasing the mass transfer rate

Inactive Publication Date: 2007-08-08
YANGZHOU UNIV +2
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] ①The separation process route is long, both leaching equipment and extraction equipment are required, and the production capacity of the equipment is low;
[0006] ②As the extraction proceeds, the non-yttrium rare earth element hydrochloride or sulfate enrichment is continuously transferred from the water phase to the extraction phase, which greatly reduces the concentration of rare earth element hydrochloride or sulfate in the water phase, thereby making The extraction rate slows down, and the content of non-yttrium rare earth element hydrochloride or sulfate enrichment in the obtained extract phase is low, and the content of the hydrochloride or sulfate enrichment of yttrium in the obtained raffinate phase also does not reach saturation concentration, In the separa...

Method used

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  • Ultrasonic leaching-extracting separation method for yttrium-rich rare earth mine
  • Ultrasonic leaching-extracting separation method for yttrium-rich rare earth mine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: Main production equipment: probe-type ultrasonic generator, 1L stirring tank, analysis and testing instrument, etc.

[0029] Main raw materials: water, hydrochloric acid, naphthenic acid, yttrium-rich rare earth ore.

[0030] The separation process steps are as follows: put the yttrium-rich rare earth ore, leaching solution, and extraction solution into a 1L stirring tank in a ratio of 1000g:5L:1L, wherein the addition amount of the yttrium-rich rare earth mineral material is 100g, and the leaching solution prepared by water and hydrochloric acid 0.5L liquid, 0.1L extract prepared by naphthenic acid and kerosene, place the probe of the ultrasonic generator in the mixed material, adjust the ultrasonic frequency to 19kHz, and the ultrasonic intensity is 0.2W / cm 2 , the operating temperature is controlled at 5°C, and after ultrasonic leaching-extraction and separation for 35 minutes, the extract phase, raffinate phase and solid phase are obtained. ; The extr...

Embodiment 2

[0031] Embodiment 2: Main equipment: probe-type ultrasonic generator, 5L stirring tank, analysis and testing instrument, etc.

[0032] Main raw materials: water, sulfuric acid, naphthenic acid, yttrium-rich rare earth ore.

[0033] The separation process steps are as follows: put the yttrium-rich rare earth ore, leaching solution, and extraction solution into a 5L stirring tank in a ratio of 1000g: 10L: 10L, wherein the addition amount of the yttrium-rich rare earth mineral material is 200g, and the leaching solution prepared by water and hydrochloric acid Liquid 2L, 2L of extraction liquid prepared by naphthenic acid and kerosene, place the probe of the ultrasonic generator in the mixed material, adjust the ultrasonic frequency to 25kHz, and the ultrasonic intensity to 2.0W / cm 2 , the operating temperature was controlled at 40°C, and after ultrasonic leaching-extraction separation for 15 minutes, the extract phase, raffinate phase and solid phase were obtained.

Embodiment 3

[0034] Embodiment 3: main production equipment: probe type ultrasonic generator, 10L stirring tank, analytical testing instrument etc.;

[0035] Main raw materials: water, hydrochloric acid, naphthenic acid, yttrium-rich rare earth ore;

[0036]The separation process steps are as follows: put the yttrium-rich rare earth ore, leaching solution, and extraction solution into a 10L stirring tank at a ratio of 1000g:50L:20L, wherein the addition amount of the yttrium-rich rare earth mineral material is 100g, and the leaching solution prepared by water and hydrochloric acid 5L of liquid, 2L of extract prepared by naphthenic acid and kerosene, place the probe of the ultrasonic generator in the mixture, adjust the ultrasonic frequency to 80kHz, and the ultrasonic intensity to 20.0W / cm 2 , the operating temperature was controlled at 60°C, and after ultrasonic leaching-extraction separation for 25 minutes, the extract phase (organic phase), raffinate phase (water phase) and solid phase ...

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Abstract

The invention discloses an ultrasonic leaching-extracting separating method of enriched rare earth ore, which is characterized by the following: leaching enriched yttrium rare earth ore, leached liquid and extract in the same container; extracting group by group; separating; obtaining yttrium hydrochlorate or enriched sulfate material as residual phase and non-yttrium rare earth element hydrochlorate or enriched sulfate material as extracting phase.

Description

Technical field: [0001] The invention relates to a method for separating yttrium-rich rare earth ore, in particular to a method for separating yttrium-rich rare earth ore by using hydrochloric acid aqueous solution or sulfuric acid aqueous solution as the leaching liquid, naphthenic acid and kerosene as the extracting liquid, and belongs to the field of hydrometallurgy . Background technique: [0002] Yttrium (atomic number 39) and lanthanides (atomic number 57-71) coexist in nature, and their chemical properties are very similar, making it difficult to separate them. At present, the hydrometallurgical process for purifying yttrium mainly uses liquid-liquid extraction technology. [0003] At present, yttrium-rich rare earth ores (high-yttrium heavy rare earth type, medium-yttrium heavy rare earth type, etc.) are used as raw materials, and the separation methods of rare earth leaching and solvent extraction are usually used to obtain yttrium oxide products and corresponding ...

Claims

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Application Information

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IPC IPC(8): C22B3/06C22B3/26
CPCY02P10/20
Inventor 许文林王雅琼魏晓廷朱金玉魏巍丁培兴
Owner YANGZHOU UNIV
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