FR2440335A1 - Procede de pyrohydrolyse pour traiter des substances usees et residus contenant du fluor - Google Patents
Procede de pyrohydrolyse pour traiter des substances usees et residus contenant du fluorInfo
- Publication number
- FR2440335A1 FR2440335A1 FR7910774A FR7910774A FR2440335A1 FR 2440335 A1 FR2440335 A1 FR 2440335A1 FR 7910774 A FR7910774 A FR 7910774A FR 7910774 A FR7910774 A FR 7910774A FR 2440335 A1 FR2440335 A1 FR 2440335A1
- Authority
- FR
- France
- Prior art keywords
- pyrohydrolysis
- diluted
- phase
- solids
- fine
- 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
Links
Classifications
-
- 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
- C01F7/02—Aluminium oxide; Aluminium hydroxide; Aluminates
- C01F7/04—Preparation of alkali metal aluminates; Aluminium oxide or hydroxide therefrom
-
- 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
-
- 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)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Electrolytic Production Of Metals (AREA)
- Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
Abstract
L'INVENTION CONCERNE UN PROCEDE DE PYROHYDROLYSE POUR LA RECUPERATION DE COMPOSES A PARTIR DES RESIDUS PRODUITS DANS LES APPAREILLAGES ELECTROLYTIQUES DE PREPARATION DE L'ALUMINIUM PAR REDUCTION. CETTE PYROHYDROLYSE MET EN OEUVRE UNE ZONE DE REACTION EN LIT FLUIDISE A PHASE DENSE POUR LA PYROHYDROLYSE DES GROSSES PARTICULES CHARGEES ET UNE ZONE DE REACTION EN LIT FLUIDISE A PHASE DILUEE POUR LA PYROHYDROLYSE DES FINES PARTICULES, CETTE DERNIERE ZONE ETANT AU-DESSUS DE LA PREMIERE ET COMMUNIQUANT AVEC ELLE. LES GAZ EFFLUENTS, APRES ENLEVEMENT DES SOLIDES, SONT MIS EN CONTACT, DANS UNE ZONE FLUIDISEE A PHASE DILUEE, AVEC DU ALO POUR ENLEVER LES COMPOSES DE NA RESIDUELS ET DONNER HF EXEMPT DE NA. LES SOLIDES PROVENANT DE LA PREMIERE ZONE DILUEE ET PRESENTANT LE RAPPORT NAAL ELEVE SOUHAITE PEUVENT ETRE COMBINES AVEC LA SCORIE PROVENANT DE LA ZONE A LIT DENSE. LES GAZ EFFLUENTS, CONTENANT LA SOURCE DE ALO, SONT SOUMIS A UNE EXTRACTION DES SOLIDES QU'ILS CONTIENNENT ET LE HF EXEMPT DE SOLIDES ET DE NA EST RECUEILLI POUR UNE UTILISATION ULTERIEURE, TANDIS QUE LES SOLIDES DE FAIBLE RAPPORT MOLAIRE NAAL SONT RECYCLES VERS L'ETAPE DE CONVERSION DES COMPOSES DE NA RESIDUELS. APPLICATION A LA RECUPERATION DE FLUOR.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/958,061 US4158701A (en) | 1978-11-06 | 1978-11-06 | Pyrohydrolysis system for processing fluorine-containing spent and waste materials |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2440335A1 true FR2440335A1 (fr) | 1980-05-30 |
FR2440335B1 FR2440335B1 (fr) | 1984-12-14 |
Family
ID=25500552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR7910774A Granted FR2440335A1 (fr) | 1978-11-06 | 1979-04-27 | Procede de pyrohydrolyse pour traiter des substances usees et residus contenant du fluor |
Country Status (9)
Country | Link |
---|---|
US (1) | US4158701A (fr) |
JP (1) | JPS5830249B2 (fr) |
AU (1) | AU521832B2 (fr) |
CA (1) | CA1099080A (fr) |
DE (1) | DE2915731A1 (fr) |
FR (1) | FR2440335A1 (fr) |
GB (1) | GB2033359B (fr) |
IT (1) | IT1112764B (fr) |
NO (1) | NO151162C (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108585564A (zh) * | 2018-07-16 | 2018-09-28 | 长沙中硅水泥技术开发有限公司 | 水泥窑协同处置电解铝废渣联产双快水泥的系统及方法 |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4704084A (en) * | 1979-12-26 | 1987-11-03 | Battelle Development Corporation | NOX reduction in multisolid fluidized bed combustors |
US4355017A (en) * | 1981-05-14 | 1982-10-19 | Martin Marietta Corporation | Aluminum electrolytic cell cathode waste recovery |
US4523949A (en) * | 1982-09-30 | 1985-06-18 | Combustion Engineering, Inc. | Aluminum dross reclamation |
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 |
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 |
FR2664297B1 (fr) * | 1990-07-04 | 1992-09-11 | Pechiney Aluminium | Procede de traitement par choc thermique de brasquages uses provenant de cuves d'electrolyse hall-heroult. |
CA2118943C (fr) * | 1992-07-24 | 2004-04-20 | Ian Lewis Kidd | Procede de traitement de matieres solides |
US5470559A (en) * | 1993-02-26 | 1995-11-28 | Alcan International Limited | Recycling of spent pot linings |
RU2141076C1 (ru) | 1993-04-06 | 1999-11-10 | Осмелт Лимитед | Способ обработки углеродсодержащего материала |
US6217840B1 (en) | 1995-12-08 | 2001-04-17 | Goldendale Aluminum Company | Production of fumed silica |
US6193944B1 (en) | 1995-12-08 | 2001-02-27 | Goldendale Aluminum Company | Method of recovering fumed silica from spent potliner |
US5723097A (en) * | 1995-12-08 | 1998-03-03 | Goldendale Aluminum Company | Method of treating spent potliner material from aluminum reduction cells |
US6074623A (en) * | 1997-10-14 | 2000-06-13 | Vick; Steven C. | Process for thermal destruction of spent potliners |
US6248302B1 (en) | 2000-02-04 | 2001-06-19 | Goldendale Aluminum Company | Process for treating red mud to recover metal values therefrom |
US6774277B2 (en) | 2000-03-07 | 2004-08-10 | Waste Management, Inc. | Methods of destruction of cyanide in cyanide-containing waste |
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 |
Citations (3)
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 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3023676A (en) * | 1955-01-31 | 1962-03-06 | Gorton George Machine Co | Index type multiple spindle pantograph machine |
US3635408A (en) * | 1970-08-25 | 1972-01-18 | Alcan Res & Dev | Treatment of carbon lining from reduction cells |
DE2403282A1 (de) * | 1974-01-24 | 1975-11-06 | Metallgesellschaft Ag | Verfahren zur abscheidung von fluorwasserstoff aus abgasen der aluminiumelektrolyse durch trockenadsorption an aluminiumoxid unter vollstaendiger abtrennung der schaedlichen begleitelemente |
-
1978
- 1978-11-06 US US05/958,061 patent/US4158701A/en not_active Expired - Lifetime
-
1979
- 1979-03-22 CA CA323,951A patent/CA1099080A/fr not_active Expired
- 1979-03-27 GB GB7910569A patent/GB2033359B/en not_active Expired
- 1979-04-19 DE DE19792915731 patent/DE2915731A1/de active Granted
- 1979-04-23 JP JP54050187A patent/JPS5830249B2/ja not_active Expired
- 1979-04-27 IT IT22244/79A patent/IT1112764B/it active
- 1979-04-27 FR FR7910774A patent/FR2440335A1/fr active Granted
- 1979-04-27 AU AU46559/79A patent/AU521832B2/en not_active Ceased
- 1979-04-30 NO NO791452A patent/NO151162C/no unknown
Patent Citations (3)
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 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108585564A (zh) * | 2018-07-16 | 2018-09-28 | 长沙中硅水泥技术开发有限公司 | 水泥窑协同处置电解铝废渣联产双快水泥的系统及方法 |
CN108585564B (zh) * | 2018-07-16 | 2023-05-16 | 长沙中硅环保科技有限公司 | 水泥窑协同处置电解铝废渣联产双快水泥的系统及方法 |
Also Published As
Publication number | Publication date |
---|---|
US4158701A (en) | 1979-06-19 |
IT1112764B (it) | 1986-01-20 |
JPS5565383A (en) | 1980-05-16 |
GB2033359B (en) | 1982-08-11 |
AU521832B2 (en) | 1982-04-29 |
GB2033359A (en) | 1980-05-21 |
IT7922244A0 (it) | 1979-04-27 |
DE2915731C2 (fr) | 1988-06-09 |
DE2915731A1 (de) | 1980-05-14 |
AU4655979A (en) | 1980-05-15 |
FR2440335B1 (fr) | 1984-12-14 |
NO791452L (no) | 1980-05-07 |
CA1099080A (fr) | 1981-04-14 |
NO151162B (no) | 1984-11-12 |
JPS5830249B2 (ja) | 1983-06-28 |
NO151162C (no) | 1985-02-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |