GB435731A - A process for refining auriferous material - Google Patents
A process for refining auriferous materialInfo
- Publication number
- GB435731A GB435731A GB363435A GB363435A GB435731A GB 435731 A GB435731 A GB 435731A GB 363435 A GB363435 A GB 363435A GB 363435 A GB363435 A GB 363435A GB 435731 A GB435731 A GB 435731A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sludge
- gold
- hydrochloric acid
- acid
- copper
- 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
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/20—Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
435,731. Refining gold by electrolysis. DEUTSCHE GOLD-UND SILBERSCHEIDEANSTALT VORM. ROESSLER, 7, Weissfrauenstrasse, Frankfort - on - Main, Germany. Feb. 4, 1935, No. 3634. Convention date, Feb. 6, 1934. [Class 41] Material rich in gold but free from, or poor in, platinum is treated as anode in an electrolyte containing hydrochloric acid and, if desired, non-precious metal chlorides, but free from precious metal chlorides, using a current density of about 1200 amps. per sq. metre or higher. Chloride or other halide of copper is preferably present in the electrolyte. Gold and copper together with silver chloride are deposited at the cathode as a sludge. Copper may be removed by treatment with acid. Silver chloride may be removed by treatment with a solvent such as a thiosulphate or ammonia ; alternatively, it may be reduced, for example, by zinc and acid, and the silver dissolved by boiling with concentrated sulphuric acid. Alternatively, the sludge may first be chlorinated either dry or in a suspension ; the chlorides of the base metals are then dissolved out in water or dilute hydrochloric acid. The chlorine may be generated by addition of potassium chlorate and hydrochloric acid to the sludge. The electrolysis may be carried out at 70‹ C. using crude hydrochloric acid of concentration 100 gms. per litre as electrolyte with or without diaphragms. Anode residues are separated from the sludge deposit by sieving or screening.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE435731X | 1934-02-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB435731A true GB435731A (en) | 1935-09-26 |
Family
ID=6506809
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB363435A Expired GB435731A (en) | 1934-02-06 | 1935-02-04 | A process for refining auriferous material |
Country Status (2)
| Country | Link |
|---|---|
| BE (1) | BE407634A (en) |
| GB (1) | GB435731A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11319613B2 (en) | 2020-08-18 | 2022-05-03 | Enviro Metals, LLC | Metal refinement |
-
0
- BE BE407634D patent/BE407634A/xx unknown
-
1935
- 1935-02-04 GB GB363435A patent/GB435731A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11319613B2 (en) | 2020-08-18 | 2022-05-03 | Enviro Metals, LLC | Metal refinement |
| US11578386B2 (en) | 2020-08-18 | 2023-02-14 | Enviro Metals, LLC | Metal refinement |
Also Published As
| Publication number | Publication date |
|---|---|
| BE407634A (en) | 1900-01-01 |
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