GB427600A - Improvements in or relating to the recovery of gold from roasted pyrites - Google Patents
Improvements in or relating to the recovery of gold from roasted pyritesInfo
- Publication number
- GB427600A GB427600A GB22988/34A GB2298834A GB427600A GB 427600 A GB427600 A GB 427600A GB 22988/34 A GB22988/34 A GB 22988/34A GB 2298834 A GB2298834 A GB 2298834A GB 427600 A GB427600 A GB 427600A
- Authority
- GB
- United Kingdom
- Prior art keywords
- leaching
- gold
- cyanide
- recovered
- sodium
- 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
Abstract
Roasted pyrites containing less than 4,5 grms. of gold per ton are subjected to a chlorinating roast, copper is removed by leaching, and the gold then recovered from the residue by leaching with known solvents, such as sodium or potassium cyanide, calcium cyanide, cyanogen bromide, or thiourea. Leaching liquids rendered strongly alkaline as by lime are preferably employed, and gold may be recovered from the solutions obtained by means of zinc dust. A 0,05 per cent solution of sodium cyanide is preferably used, leaching being effected in a number of tanks, and later fractions of the solvent used in any one tank being passed to the next tank in the series. A flow sheet illustrating the leaching step is given.ALSO:Roasted pyrites containing less than 4,5 grms. of gold per ton are subjected to a chlorinating roast, copper is removed by leaching, and the gold then recovered from the residue by leaching with known solvents such as sodium or potassium cyanide, calcium cyanide, cyanogen bromide, or thiourea. Leaching liquids rendered strongly alkaline as by lime are preferably employed, and gold may be recovered from the solutions obtained by means of zinc dust. A 0,05 per cent solution of sodium cyanide is preferably used, leaching being effected in a number of tanks, and later fractions of the solvent used in any one tank being passed to the next tank in the series. A flow sheet illustrating the leaching step is given.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE427600X | 1933-08-09 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB427600A true GB427600A (en) | 1935-04-26 |
Family
ID=6477338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB22988/34A Expired GB427600A (en) | 1933-08-09 | 1934-08-08 | Improvements in or relating to the recovery of gold from roasted pyrites |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB427600A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112111647A (en) * | 2019-06-21 | 2020-12-22 | 中国科学院过程工程研究所 | Method for pre-treating gold leaching by using gold ore calcine or roasting cyanidation tailings |
-
1934
- 1934-08-08 GB GB22988/34A patent/GB427600A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112111647A (en) * | 2019-06-21 | 2020-12-22 | 中国科学院过程工程研究所 | Method for pre-treating gold leaching by using gold ore calcine or roasting cyanidation tailings |
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