Process for separation of antimony and arsenic from a leach solution

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United States of America Patent

PATENT NO 11124857
APP PUB NO 20190309389A1
SERIAL NO

16448226

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Abstract

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A stabilization process for an arsenic solution comprising thiosulfates, the process comprising: acidifying the arsenic solution to decompose the thiosulfates, to yield an acidified solution; oxidizing the acidified solution to oxidize residual As3+ to As5+ and reduced sulfur species to sulfates, to yield a slurry comprising elemental sulfur; separating elemental sulfur from the slurry to yield a liquid; oxidizing the liquid to oxidize residual reduced sulfur species, to yield an oxidized solution; and forming a stable arsenic compound from the oxidized solution.

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Patent Owner(s)

Patent OwnerAddress
GOLDCORP INC145 KING STREET WEST SUITE 2700 TORONTO ONTARIO M5H 1J8

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hille, Simon Vancouver, CA 4 4
Martinez, Teodoro Zacatecas, MX 3 2
Tomlinson, Marcus Vancouver, CA 4 4

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