ES2027410T3 - Procedimiento de tratamiento, por silicopirohidrolisis, de los revestimientos de brascas procedentes de cubas hall-heroult. - Google Patents
Procedimiento de tratamiento, por silicopirohidrolisis, de los revestimientos de brascas procedentes de cubas hall-heroult.Info
- Publication number
- ES2027410T3 ES2027410T3 ES198888420169T ES88420169T ES2027410T3 ES 2027410 T3 ES2027410 T3 ES 2027410T3 ES 198888420169 T ES198888420169 T ES 198888420169T ES 88420169 T ES88420169 T ES 88420169T ES 2027410 T3 ES2027410 T3 ES 2027410T3
- Authority
- ES
- Spain
- Prior art keywords
- silicopyrohydrolysis
- brascas
- heroult
- hall
- procedure
- 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 - Lifetime
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
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B33/00—Silicon; Compounds thereof
- C01B33/20—Silicates
- C01B33/32—Alkali metal silicates
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Treating Waste Gases (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Electrolytic Production Of Metals (AREA)
- Silicon Compounds (AREA)
- Removal Of Specific Substances (AREA)
Abstract
LA INVENCION SE REFIERE A UN PROCEDIMIENTO DE TRATAMIENTO POR SILICOPIROHIDROLISIS DE USADAS QUE VIENEN PARTICULARMENTE DE CUBAS DE ELECTROLISIS HALL-HEROULT Y FORMADAS POR UNA MEZCLA DE PRODUCTOS CARBONADOS Y DE PRODUCTOS SILICO-ALUMINOSOS, IMPREGNADAS DE COMPUESTOS MINERALES FLUORADOS PARTICULARMENTE DE SODIO, DE CALCIO Y DE ALUMINIO, CONSISTENTE EN TRANSFORMAR ESAS BRASCAS POR TRATAMIENTO A UNA TEMPERATURA AL MENOS IGUAL A 1000 GRADOS C EN EL MEDIO DE UN GAS OXIDANTE DE VAPOR DE AGUA DE SILICE - DE UNA PARTE EN UNA FASE GASEOSA, ENGLOBANDO LA MAS GRANDE PARTE DE FLUOR, BAJO FORMA DE ACIDO FLUORHIDRICO Y DE CARBONO BAJO FORMA DE DIOXIDO Y DE MONOXIDO DE CARBONO, - POR OTRA PARTE, EN UNA FASE AL MENOS PARCIALMENTE LIQUIDA CON EL SILICIO, EL ALUINIO, EL CALCIO Y EL SODIO Y LA MAYOR PARTE DE OTRAS IMPUREZAS (HIERRO, TITANIO, METALES PESADOS...) BAJO FORMA DE COMPUESTOS OXIDADOS, ESENCIALMENTE BAJO FORMA DE SILICATOS. EL PROCEDIMIENTO PUEDE PONERSE EN MARCHA EN UN SOLO ESTADO, O EN DOS ESTADOS, EN DOS RECTORES SUCESIVOS.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR8708012A FR2615764B1 (fr) | 1987-06-01 | 1987-06-01 | Procede de traitement, par silicopyrohydrolyse, de brasquages uses provenant de cuves d'electrolyse hall-heroult |
Publications (1)
Publication Number | Publication Date |
---|---|
ES2027410T3 true ES2027410T3 (es) | 1992-06-01 |
Family
ID=9351847
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES198888420169T Expired - Lifetime ES2027410T3 (es) | 1987-06-01 | 1988-05-26 | Procedimiento de tratamiento, por silicopirohidrolisis, de los revestimientos de brascas procedentes de cubas hall-heroult. |
Country Status (17)
Country | Link |
---|---|
EP (1) | EP0294300B1 (es) |
CN (1) | CN1013248B (es) |
AU (1) | AU603672B2 (es) |
BR (1) | BR8802626A (es) |
CA (1) | CA1334049C (es) |
DE (1) | DE3867130D1 (es) |
ES (1) | ES2027410T3 (es) |
FR (1) | FR2615764B1 (es) |
GR (1) | GR3003448T3 (es) |
HU (1) | HU204717B (es) |
IN (1) | IN169595B (es) |
IS (1) | IS1513B (es) |
NO (1) | NO166922C (es) |
NZ (1) | NZ224814A (es) |
RU (1) | RU1782226C (es) |
YU (1) | YU46337B (es) |
ZA (1) | ZA883823B (es) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE467224B (sv) * | 1989-01-25 | 1992-06-15 | Skf Plasma Tech | Foerfarande och anordning foer att oeverfoera urlakningsbara substanser i avfallsmaterial till gas eller till lakningsstabila foereningar |
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. |
NO176648C (no) * | 1991-11-07 | 1995-05-10 | Elkem Technology | Fremgangsmåte for behandling av brukte katodebunner |
CA2159806C (en) * | 1993-04-06 | 2005-07-05 | John Millice Floyd | Smelting of carbon-containing material |
CN101804996B (zh) * | 2010-04-02 | 2011-12-21 | 北京矿冶研究总院 | 一种从电解铝废阴极炭块中回收氟化钠的方法 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2338336A1 (fr) * | 1976-01-13 | 1977-08-12 | Pechiney Aluminium | Nouveau procede de brasquage des cuves pour electrolyse ignee |
US4113832A (en) * | 1977-11-28 | 1978-09-12 | Kaiser Aluminum & Chemical Corporation | Process for the utilization of waste materials from electrolytic aluminum reduction systems |
US4160808A (en) * | 1978-05-30 | 1979-07-10 | Andersen John N | Pyrohydrolysis process for spent aluminum reduction cell linings |
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 |
AU611868B2 (en) * | 1986-12-22 | 1991-06-27 | Comalco Aluminium Limited | Recovery of fluoride values from waste materials |
-
1987
- 1987-06-01 FR FR8708012A patent/FR2615764B1/fr not_active Expired
-
1988
- 1988-05-26 EP EP88420169A patent/EP0294300B1/fr not_active Expired - Lifetime
- 1988-05-26 DE DE8888420169T patent/DE3867130D1/de not_active Expired - Fee Related
- 1988-05-26 ES ES198888420169T patent/ES2027410T3/es not_active Expired - Lifetime
- 1988-05-26 IN IN429/CAL/88A patent/IN169595B/en unknown
- 1988-05-27 RU SU884355818A patent/RU1782226C/ru active
- 1988-05-27 NZ NZ224814A patent/NZ224814A/xx unknown
- 1988-05-27 ZA ZA883823A patent/ZA883823B/xx unknown
- 1988-05-30 CA CA000568138A patent/CA1334049C/fr not_active Expired - Fee Related
- 1988-05-30 IS IS3352A patent/IS1513B/is unknown
- 1988-05-30 NO NO882373A patent/NO166922C/no unknown
- 1988-05-31 HU HU882777A patent/HU204717B/hu not_active IP Right Cessation
- 1988-05-31 BR BR8802626A patent/BR8802626A/pt not_active Application Discontinuation
- 1988-05-31 AU AU16787/88A patent/AU603672B2/en not_active Ceased
- 1988-05-31 YU YU105488A patent/YU46337B/sh unknown
- 1988-05-31 CN CN88103256A patent/CN1013248B/zh not_active Expired
-
1991
- 1991-12-30 GR GR91401923T patent/GR3003448T3/el unknown
Also Published As
Publication number | Publication date |
---|---|
HUT48138A (en) | 1989-05-29 |
IN169595B (es) | 1991-11-16 |
YU105488A (en) | 1989-06-30 |
NO166922B (no) | 1991-06-10 |
HU204717B (en) | 1992-02-28 |
FR2615764B1 (fr) | 1989-08-18 |
EP0294300B1 (fr) | 1991-12-27 |
CN1013248B (zh) | 1991-07-24 |
CA1334049C (fr) | 1995-01-24 |
DE3867130D1 (de) | 1992-02-06 |
BR8802626A (pt) | 1988-12-27 |
RU1782226C (ru) | 1992-12-15 |
CN88103256A (zh) | 1988-12-14 |
YU46337B (sh) | 1993-05-28 |
ZA883823B (en) | 1989-02-22 |
NO882373D0 (no) | 1988-05-30 |
NO882373L (no) | 1988-12-02 |
FR2615764A1 (fr) | 1988-12-02 |
GR3003448T3 (en) | 1993-02-17 |
IS1513B (is) | 1992-11-04 |
AU603672B2 (en) | 1990-11-22 |
EP0294300A1 (fr) | 1988-12-07 |
NZ224814A (en) | 1991-02-26 |
AU1678788A (en) | 1988-12-01 |
IS3352A7 (is) | 1988-12-02 |
NO166922C (no) | 1991-09-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
MX166160B (es) | Procedimiento para la separacion de fluoruro de hidrogeno por medio de destilacion azeotropica | |
ES2140514T3 (es) | Procedimiento de tratamiento de un articulo y nueva solucion acuosa de peroxido de hidrogeno. | |
ES2027410T3 (es) | Procedimiento de tratamiento, por silicopirohidrolisis, de los revestimientos de brascas procedentes de cubas hall-heroult. | |
TW372932B (en) | Process for producing a purified aqueous hydrogen peroxide solution | |
ES2082417T3 (es) | Procedimiento para el tratamiento de gas a base de fluor electrolitico y que puede contener compuestos uraniferos. | |
NZ249688A (en) | Aqueous composition for desmutting aluminium: a partially completed desmutting composition and an aqueous solution composition which are used together to produce the desmutting composition. | |
GB949094A (en) | Process for the production of solutions of pure peracetic acid | |
ES2105504T3 (es) | Deshidratacion de mezclas. | |
HK1294A (en) | A method of disinfecting soft contact lenses with a stabilized hydrogen peroxide solution | |
PE10595A1 (es) | Metodo de elucion de antimonio a partir de fases solidas utilizando acido sulfurico concentrado con contenido de acido clorhidrico diluido | |
NO20002247L (no) | FremgangsmÕte for fremstilling av aromatiske nitroforbindelser | |
KR930701347A (ko) | 무수 오불화니오븀 및 탄탈륨의 제조 | |
CA2013624A1 (en) | Process for the removal of chlorine from off-gases | |
SE9101364L (sv) | Spaenne med han eller hondel som frigoers ifraan varandra vid en viss kraft | |
ES2055233T3 (es) | Procedimiento para preparar 1,1,1-trifluoro-2-cloro-etano. | |
CA2148462A1 (en) | Metathesis of Acidic By-Product of Chlorine Dioxide Generating Process | |
NO974468L (no) | Omforming av væskefase fra en kilde av svoveldioksid til svovelsyre | |
PE22395A1 (es) | Procedimiento para el tratamiento de licores acidos de desecho y para la elaboracion de productos comerciales hechos con los mismos | |
ES2088193T3 (es) | Procedimiento para la obtencion de cloruros de acidos o-clorometilcarboxilicos aromaticos. | |
AU4707285A (en) | Process for the single-stage preparation of glycosyl fluorides | |
ES2020971B3 (es) | Procedimiento para flegmatizacion de acidos peroxicarbonicos insolubles en agua. | |
HUP0102558A2 (hu) | Eljárás fluoridokban szegény szerves vegyületek előállítására | |
ES2101938T3 (es) | Procedimiento para la preparacion del 1,1,1,2-tetrafluoretano. | |
KR950011390A (ko) | 테트라클로로-1, 4-벤조퀴논의 제조 방법 | |
ES2154601A1 (es) | Procedimiento para la obtencion de fluoruro sodico. |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
FG2A | Definitive protection |
Ref document number: 294300 Country of ref document: ES |