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FR2788225B1 - Procede de reduction a froid des oxydes et des sels de metaux lourds, permettant ulterieurement de separer ces metaux toxiques des melanges pulverulents qui les contiennent - Google Patents

Procede de reduction a froid des oxydes et des sels de metaux lourds, permettant ulterieurement de separer ces metaux toxiques des melanges pulverulents qui les contiennent

Info

Publication number
FR2788225B1
FR2788225B1 FR9900343A FR9900343A FR2788225B1 FR 2788225 B1 FR2788225 B1 FR 2788225B1 FR 9900343 A FR9900343 A FR 9900343A FR 9900343 A FR9900343 A FR 9900343A FR 2788225 B1 FR2788225 B1 FR 2788225B1
Authority
FR
France
Prior art keywords
oxides
separate
metal salts
heavy metal
mixtures containing
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 - Fee Related
Application number
FR9900343A
Other languages
English (en)
Other versions
FR2788225A1 (fr
Inventor
De L Eprevier Alain F Grandin
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to FR9900343A priority Critical patent/FR2788225B1/fr
Publication of FR2788225A1 publication Critical patent/FR2788225A1/fr
Application granted granted Critical
Publication of FR2788225B1 publication Critical patent/FR2788225B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D3/00—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances
    • A62D3/30—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents
    • A62D3/37—Processes for making harmful chemical substances harmless or less harmful, by effecting a chemical change in the substances by reacting with chemical agents by reduction, e.g. hydrogenation
    • 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
    • C22B5/00—General methods of reducing to metals
    • C22B5/02—Dry methods smelting of sulfides or formation of mattes
    • C22B5/12—Dry methods smelting of sulfides or formation of mattes by gases
    • 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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/001—Dry processes
    • C22B7/002—Dry processes by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding)
    • 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
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04—Working-up slag
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/08—Toxic combustion residues, e.g. toxic substances contained in fly ash from waste incineration
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/40—Inorganic substances
    • A—HUMAN NECESSITIES
    • A62—LIFE-SAVING; FIRE-FIGHTING
    • A62D—CHEMICAL MEANS FOR EXTINGUISHING FIRES OR FOR COMBATING OR PROTECTING AGAINST HARMFUL CHEMICAL AGENTS; CHEMICAL MATERIALS FOR USE IN BREATHING APPARATUS
    • A62D2101/00—Harmful chemical substances made harmless, or less harmful, by effecting chemical change
    • A62D2101/40—Inorganic substances
    • A62D2101/43—Inorganic substances containing heavy metals, in the bonded or free state
    • 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)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Health & Medical Sciences (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • General Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Toxicology (AREA)
  • Health & Medical Sciences (AREA)
  • Treating Waste Gases (AREA)
FR9900343A 1999-01-11 1999-01-11 Procede de reduction a froid des oxydes et des sels de metaux lourds, permettant ulterieurement de separer ces metaux toxiques des melanges pulverulents qui les contiennent Expired - Fee Related FR2788225B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9900343A FR2788225B1 (fr) 1999-01-11 1999-01-11 Procede de reduction a froid des oxydes et des sels de metaux lourds, permettant ulterieurement de separer ces metaux toxiques des melanges pulverulents qui les contiennent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9900343A FR2788225B1 (fr) 1999-01-11 1999-01-11 Procede de reduction a froid des oxydes et des sels de metaux lourds, permettant ulterieurement de separer ces metaux toxiques des melanges pulverulents qui les contiennent

Publications (2)

Publication Number Publication Date
FR2788225A1 FR2788225A1 (fr) 2000-07-13
FR2788225B1 true FR2788225B1 (fr) 2001-03-23

Family

ID=9540856

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9900343A Expired - Fee Related FR2788225B1 (fr) 1999-01-11 1999-01-11 Procede de reduction a froid des oxydes et des sels de metaux lourds, permettant ulterieurement de separer ces metaux toxiques des melanges pulverulents qui les contiennent

Country Status (1)

Country Link
FR (1) FR2788225B1 (fr)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2627756B2 (ja) * 1987-12-17 1997-07-09 富士通株式会社 半導体装置の製造方法
GB9102104D0 (en) * 1991-01-31 1991-03-13 Tait Robert A R Non-contacting transaction system

Also Published As

Publication number Publication date
FR2788225A1 (fr) 2000-07-13

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Legal Events

Date Code Title Description
ST Notification of lapse