METHODS FOR SELECTIVE EXTRACTION OF METALLIC COMPONENTS Russian patent published in 2003 - IPC

Abstract RU 2203335 C2

FIELD: processes and equipment for extraction and selective extraction of metallic components such as uranium, thorium, scandium and zirconium out of raw material containing them. SUBSTANCE: method is especially suitable for extracting metallic components out of metal fluoride containing ore slimes of tantalum and niobium production. Method comprises steps of dissolving tantalum and niobium components; separating non-soluble material and treating it with sulfuric acid at removing out of it fluoride containing components in the form of gaseous hydrogen fluoride; subjecting prepared sulfated material to leaching. EFFECT: enhanced efficiency of method. 15 cl, 2 dwg, 1 tbl, 1 ex

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RU 2 203 335 C2

Authors

Braun Patrik M.

Khard Robert A.

Kharbuk Donna D.

Grin Gordon K.

Dates

2003-04-27Published

1997-03-14Filed