GB689824A - Electro-melting process for the extraction of precious metals from ashes or industrial residues - Google Patents
Electro-melting process for the extraction of precious metals from ashes or industrial residuesInfo
- Publication number
- GB689824A GB689824A GB1181151A GB1181151A GB689824A GB 689824 A GB689824 A GB 689824A GB 1181151 A GB1181151 A GB 1181151A GB 1181151 A GB1181151 A GB 1181151A GB 689824 A GB689824 A GB 689824A
- Authority
- GB
- United Kingdom
- Prior art keywords
- ashes
- parts
- precious metals
- lead
- extraction
- 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
- 235000002918 Fraxinus excelsior Nutrition 0.000 title abstract 4
- 239000002956 ash Substances 0.000 title abstract 4
- 239000010970 precious metal Substances 0.000 title abstract 3
- 238000000605 extraction Methods 0.000 title abstract 2
- 238000010309 melting process Methods 0.000 title 1
- 239000002893 slag Substances 0.000 abstract 3
- 150000002611 lead compounds Chemical class 0.000 abstract 2
- HTUMBQDCCIXGCV-UHFFFAOYSA-N lead oxide Chemical compound [O-2].[Pb+2] HTUMBQDCCIXGCV-UHFFFAOYSA-N 0.000 abstract 2
- YEXPOXQUZXUXJW-UHFFFAOYSA-N lead(II) oxide Inorganic materials [Pb]=O YEXPOXQUZXUXJW-UHFFFAOYSA-N 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- MFEVGQHCNVXMER-UHFFFAOYSA-L 1,3,2$l^{2}-dioxaplumbetan-4-one Chemical compound [Pb+2].[O-]C([O-])=O MFEVGQHCNVXMER-UHFFFAOYSA-L 0.000 abstract 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- 229910000003 Lead carbonate Inorganic materials 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 abstract 1
- 238000005868 electrolysis reaction Methods 0.000 abstract 1
- 239000011521 glass Substances 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000011872 intimate mixture Substances 0.000 abstract 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 abstract 1
- 229910021514 lead(II) hydroxide Inorganic materials 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 abstract 1
- 230000001590 oxidative effect Effects 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
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
- C22B11/02—Obtaining noble metals by dry processes
- C22B11/021—Recovery of noble metals from waste materials
- C22B11/023—Recovery of noble metals from waste materials from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge
-
- 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
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)
- Processing Of Solid Wastes (AREA)
Abstract
A process for the extraction of precious metals from ashes and industrial residues containing them comprises charging an intimate mixture of the said material with scorifying substances (having a reducing or an oxidizing action as required) and a lead compound on to the surface of a previously prepared molten slag, the process being characterized by the use of electrical self-resistance heating for bringing the slag to the required temperature and maintaining it at that temperature. The raw materials used may be goldsmith's ashes or sludges from the electrolysis of copper or from the production of copper sulphate. The lead compound may be litharge, lead carbonate or lead hydroxide. In an example the charge contained 100 parts by weight of goldsmith's ashes, 60 parts of cupel sole, 50 parts of glass and 100 parts of litharge the reaction being carried out at about 1200 DEG C. Metallic lead containing precious metals is formed and sinks below the slag. Specification 652,776, [Group XI], is referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| IT689824X | 1950-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB689824A true GB689824A (en) | 1953-04-08 |
Family
ID=11311074
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1181151A Expired GB689824A (en) | 1950-07-31 | 1951-05-21 | Electro-melting process for the extraction of precious metals from ashes or industrial residues |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB689824A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3841863A (en) * | 1973-04-12 | 1974-10-15 | Atomic Energy Commission | Purification of platinum |
| US4029494A (en) * | 1973-08-24 | 1977-06-14 | Outokumpu Oy | Process for smelting and recovery of a material containing noble metals |
| EP0176491A1 (en) * | 1984-09-28 | 1986-04-02 | Boliden Aktiebolag | A method for recovering precious metals |
| FR2809336A1 (en) * | 2000-05-26 | 2001-11-30 | Jean Albert Francois Sunnen | Method for the selective reduction of industrial and household waste using a combination of high temperature melting and the addition of oxygenated compounds to neutralise the reducing potential |
| CN110408793A (en) * | 2019-08-28 | 2019-11-05 | 中南大学 | A method for directly enriching precious metals from copper matte |
-
1951
- 1951-05-21 GB GB1181151A patent/GB689824A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3841863A (en) * | 1973-04-12 | 1974-10-15 | Atomic Energy Commission | Purification of platinum |
| US4029494A (en) * | 1973-08-24 | 1977-06-14 | Outokumpu Oy | Process for smelting and recovery of a material containing noble metals |
| EP0176491A1 (en) * | 1984-09-28 | 1986-04-02 | Boliden Aktiebolag | A method for recovering precious metals |
| US4613365A (en) * | 1984-09-28 | 1986-09-23 | Boliden Aktiebolag | Method for recovering precious metals |
| FR2809336A1 (en) * | 2000-05-26 | 2001-11-30 | Jean Albert Francois Sunnen | Method for the selective reduction of industrial and household waste using a combination of high temperature melting and the addition of oxygenated compounds to neutralise the reducing potential |
| CN110408793A (en) * | 2019-08-28 | 2019-11-05 | 中南大学 | A method for directly enriching precious metals from copper matte |
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