Ultrasonic leaching-extracting separation method for low-yttrium middle-heavy rare earth mine

Abstract

The invention discloses an ultrasonic leaching-extracting separating method of low-yttrium middle-heavy typed rare earth ore, which is characterized by the following: adopting low-yttrium middle-heavy typed rare earth ore as raw material and alcaine solution as leaching liquid; blending P507 or P204 and kerosene as extracting liquid; leaching low-yttrium middle-heavy typed rare earth ore to extract and separate at 5-60 deg.c; setting the ultrasonic frequency at 19-80kHz and ultrasonic strength at 0.2-20.0W / cm2; obtaining yttrium rare earth element hydrochlorate enriched material as extracting phase and cerium group rare earth hydrochlorate enriched material as residual phases.

Description

Technical field:

[0001] The invention relates to a method for separating medium and heavy rare earth ores with low yttrium, belonging to the field of hydrometallurgy. Background technique:

[0002] Low yttrium medium and heavy rare earth ores are rare earth minerals containing cerium group rare earth elements and yttrium group rare earth elements. The enrichment of cerium group rare earth elements and the enrichment of yttrium group rare earth elements can be separated from low-yttrium medium and heavy rare earth ores. Currently, the following separation methods are usually used for separation:

[0003] ① Hydrochloric acid leaching and dissolving, in the leaching equipment, use hydrochloric acid aqueous solution to soak and dissolve low-yttrium medium and heavy rare earth ores;

[0004] ② After solid-liquid separation and impurity removal, a mixture liquid containing cerium group rare earth elements and yttrium group rare earth elements is obtained;

[0005] ③ Use the extr...

Examples

Embodiment 1

[0038] Equipment: probe-type ultrasonic generator, 1L stirring tank, analysis and testing equipment.

[0039] Raw materials: water, hydrochloric acid, P507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester), kerosene, low yttrium medium and heavy rare earth ore.

[0040] The process steps of separation are as follows:

[0041] Put low-yttrium medium-heavy rare-earth ore, leaching solution, and extract into a 1L stirred tank in a ratio of 1000g: 2L: 1L, and the addition of concentrated low-yttrium medium-heavy rare-earth mineral material is 100g, then add hydrochloric acid aqueous solution (leaching Liquid) 0.2L and P507 and kerosene mixed solution (extract) 0.1L, place the probe of the ultrasonic generator in the mixed material, adjust the ultrasonic frequency to 19kHz, the intensity 0.2W / cm 2 , control the operating temperature at 5°C, and perform ultrasonic leaching-extraction separation for 30 minutes to obtain the extract phase (upper layer), raffinate phase (middle l...

Embodiment 2

[0043] Equipment: probe type ultrasonic generator, 2L stirring tank, analysis and testing equipment.

[0044] Raw materials: water, hydrochloric acid, P507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester), kerosene, low yttrium medium and heavy rare earth ore.

[0045] The process steps of separation are as follows:

[0046] Put low-yttrium medium-heavy rare-earth ore, leaching solution, and extract into a 2L stirring tank in a ratio of 1000g: 10L: 3L, and the addition of concentrated low-yttrium medium-heavy rare-earth mineral material is 100g, then add hydrochloric acid aqueous solution (leaching Liquid) 1L and P507 and kerosene mixed solution (extract) 0.3L, the probe of the ultrasonic generator is placed in the mixed material, the ultrasonic frequency is adjusted to 25kHz, the intensity is 2.0W / cm 2 , control the operating temperature at 40°C, and perform ultrasonic leaching-extraction separation for 15 minutes to obtain the extract phase (upper layer), raffinate ph...

Embodiment 3

[0048] Equipment: probe-type ultrasonic generator, 5L stirring tank, analysis and testing instruments;

[0049] Raw materials: water, hydrochloric acid, P507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester), kerosene, low yttrium medium and heavy rare earth ores;

[0050] The process steps of separation are as follows:

[0051] Put low-yttrium medium-heavy rare-earth minerals, leaching solution, and extract into a 10L stirred tank in a ratio of 1000g: 25L: 10L, and the addition of concentrated low-yttrium medium-heavy rare-earth minerals is 200g, then add hydrochloric acid aqueous solution (leaching Liquid) 5L and P507 and kerosene mixed solution (extract) 2L, the probe of the ultrasonic generator is placed in the mixed material, the ultrasonic frequency is adjusted to 80kHz, the intensity is 20.0W / cm 2 , control the operating temperature at 60°C, and perform ultrasonic leaching-extraction separation for 35 minutes to obtain the extract phase (upper layer), raffinate ph...

Technical field:

[0001] The invention relates to a method for separating medium and heavy rare earth ores with low yttrium, belonging to the field of hydrometallurgy. Background technique:

[0002] Low yttrium medium and heavy rare earth ores are rare earth minerals containing cerium group rare earth elements and yttrium group rare earth elements. The enrichment of cerium group rare earth elements and the enrichment of yttrium group rare earth elements can be separated from low-yttrium medium and heavy rare earth ores. Currently, the following separation methods are usually used for separation:

[0003] ① Hydrochloric acid leaching and dissolving, in the leaching equipment, use hydrochloric acid aqueous solution to soak and dissolve low-yttrium medium and heavy rare earth ores;

[0004] ② After solid-liquid separation and impurity removal, a mixture liquid containing cerium group rare earth elements and yttrium group rare earth elements is obtained;

[0005] ③ Use the extr...

Examples

Embodiment 1

[0038] Equipment: probe-type ultrasonic generator, 1L stirring tank, analysis and testing equipment.

[0039] Raw materials: water, hydrochloric acid, P507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester), kerosene, low yttrium medium and heavy rare earth ore.

[0040] The process steps of separation are as follows:

[0041] Put low-yttrium medium-heavy rare-earth ore, leaching solution, and extract into a 1L stirred tank in a ratio of 1000g: 2L: 1L, and the addition of concentrated low-yttrium medium-heavy rare-earth mineral material is 100g, then add hydrochloric acid aqueous solution (leaching Liquid) 0.2L and P507 and kerosene mixed solution (extract) 0.1L, place the probe of the ultrasonic generator in the mixed material, adjust the ultrasonic frequency to 19kHz, the intensity 0.2W / cm 2 , control the operating temperature at 5°C, and perform ultrasonic leaching-extraction separation for 30 minutes to obtain the extract phase (upper layer), raffinate phase (middle l...

Embodiment 2

[0043] Equipment: probe type ultrasonic generator, 2L stirring tank, analysis and testing equipment.

[0044] Raw materials: water, hydrochloric acid, P507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester), kerosene, low yttrium medium and heavy rare earth ore.

[0045] The process steps of separation are as follows:

[0046] Put low-yttrium medium-heavy rare-earth ore, leaching solution, and extract into a 2L stirring tank in a ratio of 1000g: 10L: 3L, and the addition of concentrated low-yttrium medium-heavy rare-earth mineral material is 100g, then add hydrochloric acid aqueous solution (leaching Liquid) 1L and P507 and kerosene mixed solution (extract) 0.3L, the probe of the ultrasonic generator is placed in the mixed material, the ultrasonic frequency is adjusted to 25kHz, the intensity is 2.0W / cm 2 , control the operating temperature at 40°C, and perform ultrasonic leaching-extraction separation for 15 minutes to obtain the extract phase (upper layer), raffinate ph...

Embodiment 3

[0048] Equipment: probe-type ultrasonic generator, 5L stirring tank, analysis and testing instruments;

[0049] Raw materials: water, hydrochloric acid, P507 (2-ethylhexyl phosphonic acid mono-2-ethylhexyl ester), kerosene, low yttrium medium and heavy rare earth ores;

[0050] The process steps of separation are as follows:

[0051] Put low-yttrium medium-heavy rare-earth minerals, leaching solution, and extract into a 10L stirred tank in a ratio of 1000g: 25L: 10L, and the addition of concentrated low-yttrium medium-heavy rare-earth minerals is 200g, then add hydrochloric acid aqueous solution (leaching Liquid) 5L and P507 and kerosene mixed solution (extract) 2L, the probe of the ultrasonic generator is placed in the mixed material, the ultrasonic frequency is adjusted to 80kHz, the intensity is 20.0W / cm 2 , control the operating temperature at 60°C, and perform ultrasonic leaching-extraction separation for 35 minutes to obtain the extract phase (upper layer), raffinate ph...

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