FR2152912A1 - Extraction of non-ferrous and noble metals from seawater - sludge - by treating with air and hydrogen sulphide - Google Patents
Extraction of non-ferrous and noble metals from seawater - sludge - by treating with air and hydrogen sulphideInfo
- Publication number
- FR2152912A1 FR2152912A1 FR7232432A FR7232432A FR2152912A1 FR 2152912 A1 FR2152912 A1 FR 2152912A1 FR 7232432 A FR7232432 A FR 7232432A FR 7232432 A FR7232432 A FR 7232432A FR 2152912 A1 FR2152912 A1 FR 2152912A1
- Authority
- FR
- France
- Prior art keywords
- air
- seawater
- sludge
- ferrous
- 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.)
- Withdrawn
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
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
- C22B3/06—Extraction of metal compounds from ores or concentrates by wet processes by leaching in inorganic acid solutions, e.g. with acids generated in situ; in inorganic salt solutions other than ammonium salt solutions
- C22B3/10—Hydrochloric acid, other halogenated acids or salts thereof
-
- 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
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Removal Of Specific Substances (AREA)
Abstract
Seawater sludge is oxidised with air to convert Fe into Fe hydroxide, and then with pref. H2S contg. natural gas to convert the non-ferrous metals into sulphides. The solids are sepd. from the salt water and leached in two stages (a), with HCl soln contg. alkali metal-, alkaline earth-, and Zn chloride and (b) passing a Cl2-air mixt. through the soln. to dissolve the non-ferrous metals under liberation of H2S, CO2 and elemental S. This S is sepd. continuously by the flotation action of the Cl-air mixt.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2145361A DE2145361C2 (en) | 1970-09-11 | 1971-09-10 | Device for recording and / or reproducing signals on or from a magnetic tape contained in a cassette |
Publications (1)
Publication Number | Publication Date |
---|---|
FR2152912A1 true FR2152912A1 (en) | 1973-04-27 |
Family
ID=5819225
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7232432A Withdrawn FR2152912A1 (en) | 1971-09-10 | 1972-09-13 | Extraction of non-ferrous and noble metals from seawater - sludge - by treating with air and hydrogen sulphide |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR2152912A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2340376A1 (en) * | 1976-02-06 | 1977-09-02 | Minemet Rech Sa | HYDROMETALLURGIC PROCESS FOR THE SELECTIVE DISSOLUTION OF MIXTURES OF OXYGEN COMPOUNDS |
EP0081310A2 (en) * | 1981-12-03 | 1983-06-15 | Saudi-Sudanese Red Sea Joint Commission | Metal sulphide extraction |
-
1972
- 1972-09-13 FR FR7232432A patent/FR2152912A1/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2340376A1 (en) * | 1976-02-06 | 1977-09-02 | Minemet Rech Sa | HYDROMETALLURGIC PROCESS FOR THE SELECTIVE DISSOLUTION OF MIXTURES OF OXYGEN COMPOUNDS |
EP0081310A2 (en) * | 1981-12-03 | 1983-06-15 | Saudi-Sudanese Red Sea Joint Commission | Metal sulphide extraction |
EP0081310A3 (en) * | 1981-12-03 | 1984-05-09 | Saudi-Sudanese Red Sea Joint Commission | Metal sulphide extraction |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |