GB851552A - Process for extracting gold and silver from their ores - Google Patents

Process for extracting gold and silver from their ores

Info

Publication number
GB851552A
GB851552A GB691858A GB691858A GB851552A GB 851552 A GB851552 A GB 851552A GB 691858 A GB691858 A GB 691858A GB 691858 A GB691858 A GB 691858A GB 851552 A GB851552 A GB 851552A
Authority
GB
United Kingdom
Prior art keywords
ores
silver
pulp
hydroxy
solution
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB691858A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fairweather Harold G C
Original Assignee
Fairweather Harold G C
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Fairweather Harold G C filed Critical Fairweather Harold G C
Priority to GB691858A priority Critical patent/GB851552A/en
Publication of GB851552A publication Critical patent/GB851552A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C22B11/08—Obtaining noble metals by cyaniding

Abstract

Metallic gold and silver present in ores are extracted in an aqueous solution comprising an alkyl or aralkyl a -hydroxy nitrile with which the metals form complexes. Specified nitriles are lactonitrile, a -hydroxy-iso-butyronitrile, glycolonitrile and mandelonitrile. An inorganic cyanide may also be present in the extracting solution.ALSO:Silver and gold are extracted from ores by grinding the ore, forming a pulp thereof with an aqueous solution comprising an alkyl or aralkyl a -hydroxynitrile and digesting the pulp to form a solution from which the metal can be recovered. Specified nitriles are lactonitrile, a -hydroxy-iso-butyronitrile, glycolonitrile and mandelonitrile. If desired an inorganic cyanide may also be present in the solution used for digestion. The pH of the pulp may be adjusted by means of lime, e.g. to about 11 or may be allowed to remain at about 6.
GB691858A 1958-03-04 1958-03-04 Process for extracting gold and silver from their ores Expired GB851552A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB691858A GB851552A (en) 1958-03-04 1958-03-04 Process for extracting gold and silver from their ores

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB691858A GB851552A (en) 1958-03-04 1958-03-04 Process for extracting gold and silver from their ores

Publications (1)

Publication Number Publication Date
GB851552A true GB851552A (en) 1960-10-19

Family

ID=9823223

Family Applications (1)

Application Number Title Priority Date Filing Date
GB691858A Expired GB851552A (en) 1958-03-04 1958-03-04 Process for extracting gold and silver from their ores

Country Status (1)

Country Link
GB (1) GB851552A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010721A1 (en) * 1989-03-07 1990-09-20 Dean Robert Butler Recovery of gold, silver and platinum group metals with various leachants at low pulp densities

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990010721A1 (en) * 1989-03-07 1990-09-20 Dean Robert Butler Recovery of gold, silver and platinum group metals with various leachants at low pulp densities
GB2248631A (en) * 1989-03-07 1992-04-15 Dean Robert Butler Recovery of gold, silver and platinum group metals with various leachants at low pulp densities
GB2248631B (en) * 1989-03-07 1993-06-09 Dean Robert Butler Recovery of gold, silver and platinum group metals with various leachants at low pulp densities

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