method extracting ep0522234a1

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EP0710297A1 - Method of extracting fluorine from

1. A method of extracting fluorine from a mineral or mineral species comprises, contacting the mineral or mineral species with a leachate solution which contains metal or metalloid ions capable of forming soluble fluoro-complexes of high bond strength with fluorine in the mineral or mineral species. 2.

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RU2471011C1 - Extraction method of rare-earth

Method involves sorption of rare-earth metals. At that, prior to sorption, phosphogypsum is crushed in water so that pulp is obtained in the ratio Solid : Liquid=1:(5-10). Sorption is performed by introducing to the obtained pulp of sorbent containing sulphate and phosphate functional groups, at the ratio of Solid : Sorbent=1:(5-10) and mixing during 3-6 h.

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US9896743B2 - Method for re-extraction of rare-earth ...

The preferable ratio between organic and aqueous phase is 500:1 to 1:2. Recovery of REM into the concentrate according to the method of the present invention is up to 99% in the course of one stage of the re-extraction. After re-extraction of lanthanides, the

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RU2473708C1 - Method of extracting rare-earth

SUBSTANCE: invention relates to the technology of producing compounds of rare-earth elements during complex processing of apatites, particularly extraction of rare-earth elements from phosphogypsum. The method involves preparation of pulp from phosphogypsum and sorption of rare-earth elements on a

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EP0710297A1 - Method of extracting fluorine from

1. A method of extracting fluorine from a mineral or mineral species comprises, contacting the mineral or mineral species with a leachate solution which contains metal or metalloid ions capable of forming soluble fluoro-complexes of high bond strength with fluorine in the mineral or mineral species. 2.

More

US9896743B2 - Method for re-extraction of rare-earth ...

The preferable ratio between organic and aqueous phase is 500:1 to 1:2. Recovery of REM into the concentrate according to the method of the present invention is up to 99% in the course of one stage of the re-extraction. After re-extraction of lanthanides, the

More

RU2471011C1 - Extraction method of rare-earth

Method involves sorption of rare-earth metals. At that, prior to sorption, phosphogypsum is crushed in water so that pulp is obtained in the ratio Solid : Liquid=1:(5-10). Sorption is performed by introducing to the obtained pulp of sorbent containing sulphate and phosphate functional groups, at the ratio of Solid : Sorbent=1:(5-10) and mixing during 3-6 h.

More

RU2473708C1 - Method of extracting rare-earth

SUBSTANCE: invention relates to the technology of producing compounds of rare-earth elements during complex processing of apatites, particularly extraction of rare-earth elements from phosphogypsum. The method involves preparation of pulp from phosphogypsum and sorption of rare-earth elements on a

More

EP0710297A1 - Method of extracting fluorine from

1. A method of extracting fluorine from a mineral or mineral species comprises, contacting the mineral or mineral species with a leachate solution which contains metal or metalloid ions capable of forming soluble fluoro-complexes of high bond strength with fluorine in the mineral or mineral species. 2.

More

US9896743B2 - Method for re-extraction of rare-earth ...

The preferable ratio between organic and aqueous phase is 500:1 to 1:2. Recovery of REM into the concentrate according to the method of the present invention is up to 99% in the course of one stage of the re-extraction. After re-extraction of lanthanides, the

More

RU2471011C1 - Extraction method of rare-earth

Method involves sorption of rare-earth metals. At that, prior to sorption, phosphogypsum is crushed in water so that pulp is obtained in the ratio Solid : Liquid=1:(5-10). Sorption is performed by introducing to the obtained pulp of sorbent containing sulphate and phosphate functional groups, at the ratio of Solid : Sorbent=1:(5-10) and mixing during 3-6 h.

More

RU2473708C1 - Method of extracting rare-earth

SUBSTANCE: invention relates to the technology of producing compounds of rare-earth elements during complex processing of apatites, particularly extraction of rare-earth elements from phosphogypsum. The method involves preparation of pulp from phosphogypsum and sorption of rare-earth elements on a

More