Method for recovering gold by solvent extraction
The following summary describes a Laos Patent titled “Method for recovering gold by solvent extraction”, filed by OUTOTEC OYJ on 2011-06-07; current status: Abandoned. Identifiers include application No. P/223; DIP id LAP223; protection kind Patent - PCT National Phase. Key dates: publication 2025-03-21. Classification: C01G 7/00、C22B 11/06、C22B 3/26. Inventor(s)/designer(s): Haapalainen, Mika, Paatero, Erkki. Abstract hint: The invention relates to a method for recovering gold by solvent extraction from an acidic chloride containing aqueous solution or from slu…. Unique application identifiers, holders and classification text are surfaced here to reduce near-duplicate IP landing pages; always verify against the competent office.
P/223
Mark
Key facts
- Type
- Patent
- App. no.
P/223- Status
- Abandoned
- Applicant
- OUTOTEC OYJ
- Agent
- Lao Trademark Agency
- Filing date
- 2011-06-07
- Publication
- 2025-03-21
- Protection kind
- Patent - PCT National Phase
- Priority
- FI · 20100243 · 2010-06-09
- Applicant address
- OUTOTEC OYJ · Riihitontuntie 7, FI-02200 Espoo · FI
- Agent address
- Lao Trademark Agency · LLC Bldg, Nongbone Road, Ban Nongbone, Saysettha District, P.O. Box: 925, Vientiane · LA
- Nice / IPC classes
- C01G 7/00 · C22B 11/06 · C22B 3/26
- Goods / services
- —
Process
Steps follow the current public status-
Filed
-
Formal examination Refused / terminated
-
Substantive examination
-
Published
-
Granted
Related records
Linked from the LaoBiz.com company databaseSimilar Patent
Abstract
The invention relates to a method for recovering gold by solvent extraction from an acidic chloride containing aqueous solution or from slurry containing gold-bearing solids using a diester based reagent that is poorly soluble in water as organic extraction solution. In accordance with the method, gold is extracted extremely effectively, but other precious metals and many other metals quite sparingly. Gold is stripped from the extraction phase with pure water, from which the gold can be reduced either chemically or electrochemically.
The invention relates to a method for recovering gold by solvent extraction from an acidic chloride containing aqueous solution or from slurry containing gold-bearing solids using a diester based reagent that is poorly soluble in water as organic extraction solution. In accordance with the method, gold is extracted extremely effectively, but other precious metals and many other metals quite sparingly. Gold is stripped from the extraction phase with pure water, from which the gold can be reduced either chemically or electrochemically.
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