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 sulphide

Info

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Withdrawn
Application number
FR7232432A
Other languages
French (fr)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Preussag AG
Original Assignee
Preussag AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from DE2145361A external-priority patent/DE2145361C2/en
Application filed by Preussag AG filed Critical Preussag AG
Publication of FR2152912A1 publication Critical patent/FR2152912A1/en
Withdrawn legal-status Critical Current

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.
FR7232432A 1971-09-10 1972-09-13 Extraction of non-ferrous and noble metals from seawater - sludge - by treating with air and hydrogen sulphide Withdrawn FR2152912A1 (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (3)

* Cited by examiner, † Cited by third party
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