Process for the removal of arsenic compounds from tungsten or molybdenum concentrates

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United States of America Patent

PATENT NO 4457776
SERIAL NO

06519626

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Abstract

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A process for the removal of arsenic compounds from tungsten and/or molybdenum concentrates by selective extraction, characterized in that the concentrates are extracted with an aqueous solution of a ferric compound of a pH below 2.5 and a temperature of at least 60.degree. C.

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Patent Owner(s)

Patent OwnerAddress
SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ B V2596 HR THE HAGUE

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Nieuwhof, Arjen Arnhem, NL 6 47
Van't, Sant Jan P Westervoort, NL 2 5

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