FR2434781A1 - Procede de pyrohydrolyse modifie pour le traitement des residus provenant de la fabrication de l'aluminium - Google Patents

Procede de pyrohydrolyse modifie pour le traitement des residus provenant de la fabrication de l'aluminium

Info

Publication number
FR2434781A1
FR2434781A1 FR7910773A FR7910773A FR2434781A1 FR 2434781 A1 FR2434781 A1 FR 2434781A1 FR 7910773 A FR7910773 A FR 7910773A FR 7910773 A FR7910773 A FR 7910773A FR 2434781 A1 FR2434781 A1 FR 2434781A1
Authority
FR
France
Prior art keywords
pyrohydrolysis
aluminum
manufacture
residues
content
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.)
Granted
Application number
FR7910773A
Other languages
English (en)
Other versions
FR2434781B1 (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.)
Kaiser Aluminum and Chemical Corp
Original Assignee
Kaiser Aluminum and Chemical Corp
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 Kaiser Aluminum and Chemical Corp filed Critical Kaiser Aluminum and Chemical Corp
Publication of FR2434781A1 publication Critical patent/FR2434781A1/fr
Application granted granted Critical
Publication of FR2434781B1 publication Critical patent/FR2434781B1/fr
Granted legal-status Critical Current

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
    • C25C3/00—Electrolytic production, recovery or refining of metals by electrolysis of melts
    • C25C3/06—Electrolytic production, recovery or refining of metals by electrolysis of melts of aluminium
    • C25C3/08—Cell construction, e.g. bottoms, walls, cathodes
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B7/00—Halogens; Halogen acids
    • C01B7/19—Fluorine; Hydrogen fluoride
    • C01B7/191—Hydrogen fluoride
    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
    • C01F7/00—Compounds of aluminium
    • C01F7/48—Halides, with or without other cations besides aluminium
    • C01F7/50—Fluorides
    • 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
    • Y02C—CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG]
    • Y02C20/00—Capture or disposal of greenhouse gases
    • Y02C20/30—Capture or disposal of greenhouse gases of perfluorocarbons [PFC], hydrofluorocarbons [HFC] or sulfur hexafluoride [SF6]
    • 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
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S423/00—Chemistry of inorganic compounds
    • Y10S423/09—Reaction techniques
    • Y10S423/16—Fluidization

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Engineering & Computer Science (AREA)
  • Treating Waste Gases (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Electrolytic Production Of Metals (AREA)

Abstract

La présente invention concerne un procédé perfectionné pour récupérer des constituants de valeur par traitement de substances usées et résidus produits au cours des processus électrolytiques de préparation de l'aluminium par réduction. Ce traitement consiste en une pyrohydrolyse dans un réacteur à lit fluidisé. On utilise un courant gazeux, contenant au moins environ 90 % en volume de O2 , pour la fluidisation et pour la combustion du carbone. Ce procédé permet d'obtenir un gaz effluent de teneur substantiellement accrue en HF, lequel peut être utilisé pour la fabrication, en présence d'alumine hydratée, d'un produit contenant au moins 85 % en poids de AlF3 . Le gaz effluent de la pyrohydrolyse, de teneur accrue en HF, peut être aussi utilisé pour produire de l'acide fluorhydrique de concentration élevée avec un apport énergétique beaucoup plus faible que dans les systèmes usuels de concentration.
FR7910773A 1978-07-24 1979-04-27 Procede de pyrohydrolyse modifie pour le traitement des residus provenant de la fabrication de l'aluminium Granted FR2434781A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/927,084 US4160809A (en) 1978-07-24 1978-07-24 Modified pyrohydrolysis process for spent aluminum reduction cell linings

Publications (2)

Publication Number Publication Date
FR2434781A1 true FR2434781A1 (fr) 1980-03-28
FR2434781B1 FR2434781B1 (fr) 1984-12-14

Family

ID=25454151

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7910773A Granted FR2434781A1 (fr) 1978-07-24 1979-04-27 Procede de pyrohydrolyse modifie pour le traitement des residus provenant de la fabrication de l'aluminium

Country Status (9)

Country Link
US (1) US4160809A (fr)
JP (1) JPS5520286A (fr)
AU (1) AU531376B2 (fr)
CA (1) CA1099079A (fr)
DE (1) DE2915798A1 (fr)
FR (1) FR2434781A1 (fr)
GB (1) GB2026453B (fr)
IT (1) IT1112593B (fr)
NO (1) NO154431C (fr)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2928368A1 (de) * 1979-07-13 1981-02-05 Metallgesellschaft Ag Verfahren zur herstellung von fluorwasserstoff
DE2942439C2 (de) * 1979-10-20 1981-10-15 Vereinigte Aluminium-Werke Ag, 5300 Bonn Verfahren und Vorrichtung zur Gewinnung von Fluorwasserstoff aus fluorhaltigen Materialien durch Pyrohydrolyse
US4355017A (en) * 1981-05-14 1982-10-19 Martin Marietta Corporation Aluminum electrolytic cell cathode waste recovery
US4444740A (en) * 1983-02-14 1984-04-24 Atlantic Richfield Company Method for the recovery of fluorides from spent aluminum potlining and the production of an environmentally safe waste residue
US4743271A (en) * 1983-02-17 1988-05-10 Williams Technologies, Inc. Process for producing a clean hydrocarbon fuel
GB8305583D0 (en) * 1983-03-01 1983-03-30 Alcan Int Ltd Treatment of scrap lining material
US5336480A (en) * 1983-11-07 1994-08-09 Aluminum Company Of America Steam producing process
US4770869A (en) * 1983-11-07 1988-09-13 Aluminum Company Of America Steam producing process and products
DE3405452A1 (de) * 1984-02-16 1985-08-22 Kaiser Aluminum & Chemical Corp., Oakland, Calif. Verfahren zur herstellung von aluminiumfluorid
US4584178A (en) * 1984-11-16 1986-04-22 Quantum Teechnologies, Inc. Apparatus for the manufacture of hypochlorous acid
US4735784A (en) * 1986-07-11 1988-04-05 Morrison-Knudsen Company, Inc. Method of treating fluoride contaminated wastes
GB2198722B (en) * 1986-12-22 1991-04-17 Comalco Alu Process for the recovery of fluoride values
US4763585A (en) * 1987-09-08 1988-08-16 Ogden Environmental Services Method for the combustion of spent potlinings from the manufacture of aluminum
US4973464A (en) * 1989-02-21 1990-11-27 Ogden Environmental Services Method for the removal of cyanides from spent potlinings from aluminum manufacture
DE4025083A1 (de) * 1990-08-08 1992-02-13 Vaw Ver Aluminium Werke Ag Verfahren zur aufarbeitung fluorhaltiger rueckstaende
US5164174A (en) * 1991-10-11 1992-11-17 Reynolds Metals Company Detoxification of aluminum spent potliner by thermal treatment, lime slurry quench and post-kiln treatment
CA2118943C (fr) * 1992-07-24 2004-04-20 Ian Lewis Kidd Procede de traitement de matieres solides
EP0693005B1 (fr) 1993-04-06 2001-07-11 Ausmelt Limited Fusion de materiau contenant du carbone
US5558690A (en) * 1994-12-23 1996-09-24 Vortec Corporation Manufacture of ceramic tiles from spent aluminum potlining
JP2000508290A (ja) * 1996-04-09 2000-07-04 ボーテック・コーポレイション フライアッシュからのセラミックタイルの製造
US20110078948A1 (en) * 2009-10-01 2011-04-07 Chandrashekhar Ganpatrao Sonwane Ash removal from coal: process to avoid large quantities of hydrogen fluoride on-site
US20110081284A1 (en) * 2009-10-02 2011-04-07 Mark Weaver Treatment of bauxite residue and spent pot lining
CN102134727B (zh) * 2011-03-10 2012-10-31 伊川龙海科技实业有限公司 一种电解槽余热回收利用的方法及装置
CN103771473B (zh) * 2014-02-18 2015-08-05 贵州万方铝化科技开发有限公司 一种制备小粒径Al2O3粉末的方法
CN109909272B (zh) * 2019-04-11 2022-04-12 新疆新能源(集团)准东环境发展有限公司 以废治废无害化处理铝电解槽大修渣的工艺方法
CN114377338A (zh) * 2021-12-28 2022-04-22 郑州鸿跃环保科技有限公司 一种对铝电解槽大修渣进行脱毒的处理系统及处理方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1271252A (fr) * 1960-07-29 1961-09-08 Electrochimie Soc Procédé de pyrohydrolyse
US4065551A (en) * 1968-02-01 1977-12-27 Elkem-Spigerverket A/S Method of recovering fluorine from carbonaceous waste material
FR2410047A1 (fr) * 1977-11-28 1979-06-22 Kaiser Aluminium Chem Corp Procede de recuperation des dechets provenant des installations de production electrolytique de l'aluminium

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1271252A (fr) * 1960-07-29 1961-09-08 Electrochimie Soc Procédé de pyrohydrolyse
US4065551A (en) * 1968-02-01 1977-12-27 Elkem-Spigerverket A/S Method of recovering fluorine from carbonaceous waste material
FR2410047A1 (fr) * 1977-11-28 1979-06-22 Kaiser Aluminium Chem Corp Procede de recuperation des dechets provenant des installations de production electrolytique de l'aluminium

Also Published As

Publication number Publication date
IT1112593B (it) 1986-01-20
IT7922183A0 (it) 1979-04-26
US4160809A (en) 1979-07-10
AU4655879A (en) 1980-01-31
CA1099079A (fr) 1981-04-14
FR2434781B1 (fr) 1984-12-14
DE2915798A1 (de) 1980-02-07
GB2026453B (en) 1982-07-14
NO154431B (no) 1986-06-09
NO154431C (no) 1986-09-17
AU531376B2 (en) 1983-08-18
JPS5520286A (en) 1980-02-13
JPS63374B2 (fr) 1988-01-06
GB2026453A (en) 1980-02-06
DE2915798C2 (fr) 1987-01-29
NO791451L (no) 1980-01-25

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