IT1112764B - Sistema di piroidrolisi per la lavorazione di materiali esausti e di rifiuto contenenti fluoro - Google Patents
Sistema di piroidrolisi per la lavorazione di materiali esausti e di rifiuto contenenti fluoroInfo
- Publication number
- IT1112764B IT1112764B IT22244/79A IT2224479A IT1112764B IT 1112764 B IT1112764 B IT 1112764B IT 22244/79 A IT22244/79 A IT 22244/79A IT 2224479 A IT2224479 A IT 2224479A IT 1112764 B IT1112764 B IT 1112764B
- Authority
- IT
- Italy
- Prior art keywords
- waste
- processing
- containing fluorine
- pyrohydrolysis system
- waste materials
- Prior art date
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)
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 |
---|---|
IT7922244A0 IT7922244A0 (it) | 1979-04-27 |
IT1112764B true IT1112764B (it) | 1986-01-20 |
Family
ID=25500552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
IT22244/79A IT1112764B (it) | 1978-11-06 | 1979-04-27 | Sistema di piroidrolisi per la lavorazione di materiali esausti e di rifiuto contenenti fluoro |
Country Status (9)
Country | Link |
---|---|
US (1) | US4158701A ( ) |
JP (1) | JPS5830249B2 ( ) |
AU (1) | AU521832B2 ( ) |
CA (1) | CA1099080A ( ) |
DE (1) | DE2915731A1 ( ) |
FR (1) | FR2440335A1 ( ) |
GB (1) | GB2033359B ( ) |
IT (1) | IT1112764B ( ) |
NO (1) | NO151162C ( ) |
Families Citing this family (22)
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 |
US4900535A (en) * | 1986-12-22 | 1990-02-13 | Comalco Aluminum Limited | Recovery of fluoride values from waste materials |
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. |
ZA935347B (en) * | 1992-07-24 | 1994-03-14 | Comalco Alu | Treatment of solid material |
US5470559A (en) * | 1993-02-26 | 1995-11-28 | Alcan International Limited | Recycling of spent pot linings |
DE69427692T2 (de) | 1993-04-06 | 2002-05-02 | Ausmelt Ltd | Schmelzen von kohlenstoffhaltigem material |
US5723097A (en) * | 1995-12-08 | 1998-03-03 | Goldendale Aluminum Company | Method of treating spent potliner material from aluminum reduction cells |
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 |
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 |
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 |
Family Cites Families (6)
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 |
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 |
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 |
US4113832A (en) * | 1977-11-28 | 1978-09-12 | Kaiser Aluminum & Chemical Corporation | Process for the utilization of waste materials from electrolytic aluminum reduction systems |
-
1978
- 1978-11-06 US US05/958,061 patent/US4158701A/en not_active Expired - Lifetime
-
1979
- 1979-03-22 CA CA323,951A patent/CA1099080A/en 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 FR FR7910774A patent/FR2440335A1/fr active Granted
- 1979-04-27 IT IT22244/79A patent/IT1112764B/it active
- 1979-04-27 AU AU46559/79A patent/AU521832B2/en not_active Ceased
- 1979-04-30 NO NO791452A patent/NO151162C/no unknown
Also Published As
Publication number | Publication date |
---|---|
NO151162C (no) | 1985-02-20 |
FR2440335A1 (fr) | 1980-05-30 |
GB2033359B (en) | 1982-08-11 |
GB2033359A (en) | 1980-05-21 |
NO791452L (no) | 1980-05-07 |
AU4655979A (en) | 1980-05-15 |
DE2915731A1 (de) | 1980-05-14 |
JPS5565383A (en) | 1980-05-16 |
JPS5830249B2 (ja) | 1983-06-28 |
US4158701A (en) | 1979-06-19 |
NO151162B (no) | 1984-11-12 |
AU521832B2 (en) | 1982-04-29 |
FR2440335B1 ( ) | 1984-12-14 |
CA1099080A (en) | 1981-04-14 |
IT7922244A0 (it) | 1979-04-27 |
DE2915731C2 ( ) | 1988-06-09 |
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