Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Shijie Wang0
Daniel Kim0
Date of Patent
December 24, 2019
0Patent Application Number
157244600
Date Filed
October 4, 2017
0Patent Primary Examiner
Patent abstract
An apparatus for the recovery of gold from a gold-bearing aqueous filtrate, the process comprising the steps of:(A) Contacting the aqueous filtrate with dibutyl carbitol (DBC) in a two-stage solvent extraction process to remove the gold from the aqueous filtrate into the DBC to form a gold-loaded DBC; and(D) Contacting the gold-loaded DBC with an aqueous acid scrub of hydrochloric acid in a four-stage countercurrent scrub process to remove impurities, e.g., non-gold metal, from the DBC into the aqueous scrub solution to form an impurity-loaded aqueous scrub.
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