Method for recovering gold from refractory ore

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United States of America Patent

PATENT NO 9920395
APP PUB NO 20160083816A1
SERIAL NO

14856277

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Abstract

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A method of recovering gold from refractory ore containing a carbonaceous material, a sulfide and gold is provided. Gypsum seed crystals are added to a slurry containing a roasted refractory ore or a pressure-oxidized refractory ore to decrease gypsum encapsulation of gold and improve gold recovery.

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Patent Owner(s)

  • ECOLAB USA INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Child, Daniel E Spring Creek, US 2 8
Davis, Ronald V Geneva, US 18 94
Gerlach, Walter Naperville, US 3 6

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