GB728135A - Improvements in or relating to the recovery of precious metal content in arsenic-bearing ores and concentrates thereof - Google Patents
Improvements in or relating to the recovery of precious metal content in arsenic-bearing ores and concentrates thereofInfo
- Publication number
- GB728135A GB728135A GB1130/52A GB113052A GB728135A GB 728135 A GB728135 A GB 728135A GB 1130/52 A GB1130/52 A GB 1130/52A GB 113052 A GB113052 A GB 113052A GB 728135 A GB728135 A GB 728135A
- Authority
- GB
- United Kingdom
- Prior art keywords
- slurry
- arsenic
- precious metal
- added
- concentrates
- 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
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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
In a process for recovering the precious metal content of minerals from particulate arsenic bearing ores and concentrates, an aqueous slurry of the particles is formed with a sulphuric acid leaching liquor having an acid content below 10 per cent. by weight but greater than one having a pH of 4.5, the slurry is oxidized with air, oxygen-enriched air or oxygen at a temperature of 250 DEG F.-650 DEG F. under a pressure exceeding the vapour pressure of the solution at the temperature concerned, treatment being continued until the reaction substantially ceases, the slurry is pressure-relieved and cooled. Before or after cooling alkaline earth metal compound such as limestone or dolomite or its equivalent is added whereby the arsenic and the iron content of the feed in amount up to the chemical equivalent of the arsenic is precipitated, separated, washed and agitated in an alkaline cyanide slurry to dissolve the precious metals which are recovered in known manner. The alkaline earth compound or iron, e.g. in the form of sulphide, may be added to the original slurry or, to avoid unnecessary increase in the bulk of solids to be treated with cyanide, it may be added after the precious metal-containing solid residue from the oxidation reaction has been separated. Acid soluble metals remain in the solution and may be recovered after separation of the solid residue. Specifications 728,134 and 728,136 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US728135XA | 1951-01-19 | 1951-01-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB728135A true GB728135A (en) | 1955-04-13 |
Family
ID=22109909
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1130/52A Expired GB728135A (en) | 1951-01-19 | 1952-01-15 | Improvements in or relating to the recovery of precious metal content in arsenic-bearing ores and concentrates thereof |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB728135A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2160480A1 (en) * | 2007-05-18 | 2010-03-10 | CESL Limited | Process for precious metal recovery from a sulphide ore or concentrate or other feed material |
-
1952
- 1952-01-15 GB GB1130/52A patent/GB728135A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2160480A1 (en) * | 2007-05-18 | 2010-03-10 | CESL Limited | Process for precious metal recovery from a sulphide ore or concentrate or other feed material |
EP2160480A4 (en) * | 2007-05-18 | 2010-12-29 | Cesl Ltd | Process for precious metal recovery from a sulphide ore or concentrate or other feed material |
US8025859B2 (en) | 2007-05-18 | 2011-09-27 | Cesl Limited | Process for gold and silver recovery from a sulphide concentrate |
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