METHOD OF RARE-EARTH ELEMENTS EXTRACTION FROM PHOSPHATE ORE Russian patent published in 1995 - IPC

Abstract RU 2031842 C1

FIELD: processing of phosphate ores. SUBSTANCE: apatite concentrate is treated with phosphoric acid excess. Pulp formed is heated up to 60-110 C, and solid and liquid pulp phases were separated.. Finely divided fraction is isolated from the solid pulp phase. Size particle of finely divided fraction is less then 0.1-50 mcm, and it consists of mainly compounds of rare-earth elements. EFFECT: improved method of extraction. 5 cl, 1 dwg, 1 tbl

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RU 2 031 842 C1

Authors

Gornyj Jurij Georgievich

Dates

1995-03-27—Published

1991-07-01—Filed