METHOD OF RECOVERING MOLYBDATE OR TUNGSTATE FROM AQUEOUS SOLUTIONS BY ADSORPTION Russian patent published in 2013 - IPC C22B34/34 C22B34/36 C01G39/00 C01G41/00 C22B3/24

Abstract RU 2501872 C2

FIELD: chemistry.

SUBSTANCE: method of recovering molybdate or tungstate from an aqueous solution, in which molybdate or tungstate is bound from the aqueous solution at pH in the range from 2 to 6 with a water-soluble, cationised inorganic carrier. The saturated carrier is separated and the bound molybdate or tungstate is released once again into aqueous solution at a pH in the range from 6 to 14. The cationised inorganic carrier is bentonite, hectorite or attapulgite which is subjected to ion exchange with tetraalkylammonium ions or quaternised esters of fatty acids and alkanolamines.

EFFECT: simple method with high recovery of molybdate or tungstate from solutions.

19 cl, 2 tbl, 10 ex

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RU 2 501 872 C2

Authors

Ditts Tomas

Zjuss Khans Ul'Rikh

Dates

2013-12-20—Published

2009-04-27—Filed