NO154430C - Pyrohydrolyseprosess til gjenvinning av aluminium, natrium og fluor fra fluorholdige avfallsmaterialer som dannes ved aluminiumelektrolyse. - Google Patents

Pyrohydrolyseprosess til gjenvinning av aluminium, natrium og fluor fra fluorholdige avfallsmaterialer som dannes ved aluminiumelektrolyse.

Info

Publication number
NO154430C
NO154430C NO782896A NO782896A NO154430C NO 154430 C NO154430 C NO 154430C NO 782896 A NO782896 A NO 782896A NO 782896 A NO782896 A NO 782896A NO 154430 C NO154430 C NO 154430C
Authority
NO
Norway
Prior art keywords
aluminum
pyrohydrolyse
fluorable
fluores
recovery
Prior art date
Application number
NO782896A
Other languages
English (en)
Other versions
NO782896L (no
NO154430B (no
Inventor
Norman Bell
John Nikolai Andersen
Hung-Kei Henry Lam
Original Assignee
Kaiser Aluminium Chem 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 Aluminium Chem Corp filed Critical Kaiser Aluminium Chem Corp
Publication of NO782896L publication Critical patent/NO782896L/no
Publication of NO154430B publication Critical patent/NO154430B/no
Publication of NO154430C publication Critical patent/NO154430C/no

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
    • C01D3/00—Halides of sodium, potassium or alkali metals in general
    • C01D3/02—Fluorides
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/19—Cosmetics or similar toiletry preparations characterised by the composition containing inorganic ingredients
    • A61K8/27—Zinc; Compounds thereof
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/30—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds
    • A61K8/46—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur
    • A61K8/466—Cosmetics or similar toiletry preparations characterised by the composition containing organic compounds containing sulfur containing sulfonic acid derivatives; Salts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00—Cosmetics or similar toiletry preparations
    • A61K8/18—Cosmetics or similar toiletry preparations characterised by the composition
    • A61K8/92—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof
    • A61K8/922—Oils, fats or waxes; Derivatives thereof, e.g. hydrogenation products thereof of vegetable origin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K9/00—Medicinal preparations characterised by special physical form
    • A61K9/0012—Galenical forms characterised by the site of application
    • A61K9/0053—Mouth and digestive tract, i.e. intraoral and peroral administration
    • A61K9/0056—Mouth soluble or dispersible forms; Suckable, eatable, chewable coherent forms; Forms rapidly disintegrating in the mouth; Lozenges; Lollipops; Bite capsules; Baked products; Baits or other oral forms for animals
    • A61K9/0058—Chewing gums
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61Q—SPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q11/00—Preparations for care of the teeth, of the oral cavity or of dentures; Dentifrices, e.g. toothpastes; Mouth rinses
    • 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
    • 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

Landscapes

  • Health & Medical Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Organic Chemistry (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Epidemiology (AREA)
  • Inorganic Chemistry (AREA)
  • Birds (AREA)
  • Materials Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Nutrition Science (AREA)
  • Zoology (AREA)
  • Geology (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physiology (AREA)
  • Metallurgy (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Electrochemistry (AREA)
  • Medicinal Chemistry (AREA)
  • Pharmacology & Pharmacy (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Treating Waste Gases (AREA)
  • Processing Of Solid Wastes (AREA)
NO782896A 1977-11-28 1978-08-25 Pyrohydrolyseprosess til gjenvinning av aluminium, natrium og fluor fra fluorholdige avfallsmaterialer som dannes ved aluminiumelektrolyse. NO154430C (no)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/855,506 US4113832A (en) 1977-11-28 1977-11-28 Process for the utilization of waste materials from electrolytic aluminum reduction systems

Publications (3)

Publication Number Publication Date
NO782896L NO782896L (no) 1979-05-29
NO154430B NO154430B (no) 1986-06-09
NO154430C true NO154430C (no) 1986-09-17

Family

ID=25321424

Family Applications (1)

Application Number Title Priority Date Filing Date
NO782896A NO154430C (no) 1977-11-28 1978-08-25 Pyrohydrolyseprosess til gjenvinning av aluminium, natrium og fluor fra fluorholdige avfallsmaterialer som dannes ved aluminiumelektrolyse.

Country Status (9)

Country Link
US (1) US4113832A (no)
JP (1) JPS5476497A (no)
AU (1) AU516908B2 (no)
CA (1) CA1093832A (no)
DE (1) DE2834950C2 (no)
FR (1) FR2410047A1 (no)
GB (1) GB2008553B (no)
IT (1) IT1101053B (no)
NO (1) NO154430C (no)

Families Citing this family (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4160808A (en) * 1978-05-30 1979-07-10 Andersen John N Pyrohydrolysis process for spent aluminum reduction cell linings
US4160809A (en) * 1978-07-24 1979-07-10 Kaiser Aluminum & Chemical Corporation Modified pyrohydrolysis process for spent aluminum reduction cell linings
US4158701A (en) * 1978-11-06 1979-06-19 Kaiser Aluminum & Chemical Corporation Pyrohydrolysis system for processing fluorine-containing spent and waste materials
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
US4431711A (en) 1980-03-25 1984-02-14 Ex-Cell-O Corporation Vacuum metallizing a dielectric substrate with indium and products thereof
US4407871A (en) 1980-03-25 1983-10-04 Ex-Cell-O Corporation Vacuum metallized dielectric substrates and method of making same
US4348366A (en) * 1981-04-06 1982-09-07 Brown Raymond J Process for the production of alumina and alumina compounds from wastes
US4355017A (en) * 1981-05-14 1982-10-19 Martin Marietta Corporation Aluminum electrolytic cell cathode waste recovery
DE3224040A1 (de) * 1982-06-28 1983-12-29 Henkel KGaA, 4000 Düsseldorf Verfahren zum hydrothermalen aufschluss von einen hohen gehalt an gegluehten aluminiumoxiden aufweisenden chemischen abfaellen und rueckstaenden
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
GB8305583D0 (en) * 1983-03-01 1983-03-30 Alcan Int Ltd Treatment of scrap lining material
AU563304B2 (en) * 1984-12-21 1987-07-02 Comalco Aluminium Limited Soz leach to recover soda and alumina from red mud with recycle to bayer process
JPS61270754A (ja) * 1985-05-25 1986-12-01 Konishiroku Photo Ind Co Ltd 写真処理液の脱銀方法及び写真処理機
JPS61270752A (ja) * 1985-05-25 1986-12-01 Konishiroku Photo Ind Co Ltd 写真処理液の脱銀方法及び写真処理機
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
FR2615764B1 (fr) * 1987-06-01 1989-08-18 Pechiney Aluminium Procede de traitement, par silicopyrohydrolyse, de brasquages uses provenant de cuves d'electrolyse hall-heroult
US4763585A (en) * 1987-09-08 1988-08-16 Ogden Environmental Services Method for the combustion of spent potlinings from the manufacture of aluminum
US4956158A (en) * 1988-03-29 1990-09-11 Aluminum Company Of America Stabilization of fluorides of spent potlining by chemical dispersion
US4973464A (en) * 1989-02-21 1990-11-27 Ogden Environmental Services Method for the removal of cyanides from spent potlinings from aluminum manufacture
FR2669350B1 (fr) * 1990-11-16 1993-01-15 Pechiney Aluminium Procede de traitement par voie humide de brasquages uses provenant de cuves d'electrolyse hall-heroult.
US5114545A (en) * 1991-06-17 1992-05-19 Reynolds Metals Company Electrolyte chemistry for improved performance in modern industrial alumina reduction cells
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
NO176648C (no) * 1991-11-07 1995-05-10 Elkem Technology Fremgangsmåte for behandling av brukte katodebunner
CA2118943C (en) * 1992-07-24 2004-04-20 Ian Lewis Kidd Treatment of solid material
US5470559A (en) * 1993-02-26 1995-11-28 Alcan International Limited Recycling of spent pot linings
BR9406327A (pt) 1993-04-06 1995-12-26 Ausmelt Ltd Fusão de material contendo-carbono
US5476990A (en) * 1993-06-29 1995-12-19 Aluminum Company Of America Waste management facility
FR2710554B1 (fr) * 1993-09-28 1995-12-01 Fcb Procédé et installation pour le broyage de vieilles brasques et de produits similaires.
US5558690A (en) * 1994-12-23 1996-09-24 Vortec Corporation Manufacture of ceramic tiles from spent aluminum potlining
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
AU2445397A (en) * 1996-04-09 1997-10-29 Vortec Corporation Manufacture of ceramic tiles from fly ash
FR2756198B1 (fr) * 1996-11-26 1998-12-18 Pechiney Aluminium Procede d'insolubilisation et de consolidation de brasques usees provenant des cuves d'electrolyse hall-heroult
CA2327878C (en) 1999-12-17 2005-02-15 Alcan International Limited Recycling of spent pot linings
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
CA2367544A1 (en) * 2002-01-08 2003-07-08 Boleslaw Ignasiak Method for spent potliner processing, separating and recycling the products therefrom
CA2408287C (en) * 2002-10-16 2009-12-15 Biothermica Technologies Inc. Process for treating gaseous emissions generated during production of carbon anodes in an aluminum plant
AU2005327495A1 (en) * 2005-02-16 2006-08-24 Novafrit International Inc. Process and apparatus for converting spent potliners into a glass frit, and resulting products
KR100761524B1 (ko) * 2006-02-02 2007-10-04 주식회사 협진아이엔씨 연료전지용 기체확산층의 제조 방법
ES2306618B1 (es) * 2008-04-04 2009-07-20 Xiloga, S.L Procedimiento de reciclado de spent pot linings (spls) procedentes de la produccion de aluminio primario.
EA015635B1 (ru) * 2010-09-24 2011-10-31 Гу "Нии Металлургии" Гуп "Талко" Способ переработки отходов производства алюминия
RU2472865C1 (ru) * 2011-08-31 2013-01-20 Государственное образовательное учреждение высшего профессионального образования "Иркутский государственный технический университет" (ГОУ ИрГТУ) Способ переработки фторсодержащих отходов электролитического производства алюминия
RU2497958C1 (ru) * 2012-04-26 2013-11-10 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Способ получения брикетов из фторуглеродсодержащих отходов
CN102978659B (zh) * 2012-12-04 2016-08-10 周俊和 一种电解槽大修槽渣的深度资源化综合利用方法
DE102015003405A1 (de) 2015-03-13 2016-09-15 Eberhard Gock Herstellung von Aluminiumfluorid aus Ausbruch von verbrauchten Aluminiumelektrolysezellen
RU2586389C1 (ru) * 2015-03-19 2016-06-10 Общество с ограниченной ответственностью "Безотходные и малоотходные технологии" (ООО "БМТ") Способ переработки фторуглеродсодержащих отходов алюминиевого производства
RU2577871C1 (ru) * 2015-03-30 2016-03-20 Общество с ограниченной ответственностью "Безотходные и малоотходные технологии" (ООО "БМТ") Способ получения портландцемента
CN105112938B (zh) * 2015-08-14 2017-11-10 昆明理工大学 一种铝电解槽废炭料中挥发脱氟的方法
RU2616753C1 (ru) * 2015-11-13 2017-04-18 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Способ переработки фторуглеродсодержащих отходов электролитического производства алюминия
NO341751B1 (en) * 2016-06-09 2018-01-15 Bjoerseth Knut Erik Method and device for recycling of dust accumulations in connection with electrolytic production of aluminium
CN106269787B (zh) * 2016-08-05 2018-12-21 北京矿冶研究总院 一种用于处置电解铝废阴极的高温连续式处理方法
FR3063658B1 (fr) * 2017-03-10 2021-04-23 Sarp Ind Procede de fabrication d'un materiau a haute surface specifique
RU2685566C1 (ru) * 2018-06-07 2019-04-22 Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр" Способ переработки угольной пены электролитического производства алюминия
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
RU2703084C1 (ru) * 2019-06-28 2019-10-15 федеральное государственное бюджетное образовательное учреждение высшего образования "Иркутский национальный исследовательский технический университет" (ФГБОУ ВО "ИРНИТУ") Способ получения технического кремния
CN111471866A (zh) * 2020-05-29 2020-07-31 重庆新格环保科技有限公司 一种废铝原料回收利用及无害化处理的方法
CN112551566A (zh) * 2020-11-11 2021-03-26 郑州大学 电解铝碳渣脱碳脱钠制备氟化铝和氧化铝的方法
CN112978777B (zh) * 2021-02-02 2022-06-03 中国铝业股份有限公司 一种含电解质废料的处理方法
CN113278808B (zh) * 2021-04-23 2022-01-11 昆明理工大学 一种联动回收铝冶炼过程多种固废物料的方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE970919C (de) * 1953-01-08 1958-11-13 Bruno Schmidl Dr Ing Verfahren zur Rueckgewinnung von Kryolith aus den Abgasen bei der Schmelzflusselektrolyse des Aluminiums
FR1209223A (fr) * 1958-07-03 1960-02-29 Pechiney Procédé de récupération de gaz fluorhydrique par l'alumine
FR1271252A (fr) * 1960-07-29 1961-09-08 Electrochimie Soc Procédé de pyrohydrolyse
FR1272119A (fr) * 1960-08-10 1961-09-22 Electrochimie Soc Procédé de récupération de fluor
US3151934A (en) * 1961-06-12 1964-10-06 Kaiser Aluminium Chem Corp Method of recovering lithium values
AU3995968A (en) * 1968-07-01 1971-01-07 Comalco Aluminium Chell Bay) Limited Separation of reduction and/or refining bath materials from carbonaceous residues
US3635408A (en) * 1970-08-25 1972-01-18 Alcan Res & Dev Treatment of carbon lining from reduction cells
DE2056096B2 (de) * 1970-11-14 1978-09-28 Metallgesellschaft Ag, 6000 Frankfurt Verfahren zur Abtrennung von Fluorwasserstoff aus Gasen
FR2139648B1 (no) * 1971-05-28 1973-08-10 Prat Daniel Poelman
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
US4053375A (en) * 1976-07-16 1977-10-11 Dorr-Oliver Incorporated Process for recovery of alumina-cryolite waste in aluminum production
US4062696A (en) * 1976-07-27 1977-12-13 Kaiser Aluminum & Chemical Corporation Purification of contaminated alumina scavengers of aluminum reduction cell effluent dry scrubber systems

Also Published As

Publication number Publication date
DE2834950C2 (de) 1986-03-20
FR2410047B1 (no) 1982-04-02
FR2410047A1 (fr) 1979-06-22
DE2834950A1 (de) 1979-05-31
AU3926878A (en) 1980-02-28
IT1101053B (it) 1985-09-28
GB2008553B (en) 1982-04-07
AU516908B2 (en) 1981-06-25
NO782896L (no) 1979-05-29
GB2008553A (en) 1979-06-06
NO154430B (no) 1986-06-09
JPS5476497A (en) 1979-06-19
US4113832A (en) 1978-09-12
IT7827170A0 (it) 1978-08-30
JPS5542930B2 (no) 1980-11-04
CA1093832A (en) 1981-01-20

Similar Documents

Publication Publication Date Title
NO154430C (no) Pyrohydrolyseprosess til gjenvinning av aluminium, natrium og fluor fra fluorholdige avfallsmaterialer som dannes ved aluminiumelektrolyse.
NO153693C (no) Fremgangsmaate til gjenvinning av fluor, aluminium og natrium fra brukte ovnsforinger og avfallsmaterialer som dannes ved aluminiumelektrolyse.
NO151162C (no) Fremgangsmaate til ved pyrohydrolyse aa gjenvinne fluor-, aluminium- og natriumholdige materialer fra avfallsmaterialer som dannes ved aluminiumelektrolyse
NO791451L (no) Pyrohydrolyseprosess til gjenvinning av fluor, aluminium og natrium
NO153938C (no) Fremgangsmaate ved oppfangning og separasjon av olje, vann og gass fra en oljebroenn og en utligningskolonne for utfoerelse av fremgangsmaaten.
DK109187D0 (da) Fremgangsmaade til genvinding af vaerdifuld gas fra skrald
NO138956C (no) Fremgangsmaate og anode for fremstilling av aluminium ved smelteelektrolyse
NO151431C (no) Fjellbolt til bruk ved stabilisering av fjell
MX148853A (es) Metodo mejorado para recuperar gases que contienen azufre procedentes de hornos de calcinacion
DK143877A (da) Fremgangsmade til udvinding af aluminiumoxyd fra aluminiumholdige silikater
NO772911L (no) Fremgangsmaate til gjenvinning av metaller fra anodeslam
CA982786A (en) Method of recovering fluorine from waste gases
NO150396C (no) Fremgangsmaate ved fjerning av aluminiumklorid fra urenset titantetraklorid ved tilsetning av vann og natriumklorid
NO154793C (no) Fremgangsmaate til fjerning av urenheter fra natriumaluminatopploesninger.
DK158157C (da) Fremgangsmaade til genvinding af aedelmetaller fra slam, affald eller andet materiale ved elektrolyse
DK561675A (da) Fremgangsmade til fjernelse af ethylenisk umettede chlorerede hydrocarboner fra gasstromme
NO151863C (no) Fremgangsmaate til aa skille gassformig natrium-, kalium- eller magnesium-metall fra en gassformig blanding dannet ved reduksjon av en natrium-, kalium- eller magnesium-forbindelse
NO164806C (no) Gasslaser for eksitering ved kondensatorutladning.
NO151508C (no) Fremgangsmaate for fremstilling av aluminium ved elektrolyse
NO149509C (no) Fremgangsmaate for aa fjerne opploest metallisk natrium fra aluminiumsmelter
NO872537D0 (no) Fremgangsmaate for gjenvinning av aluminium og litium fra metallavfall.
ES507685A0 (es) Procedimiento para recuperar fluidos agotados de la mecanizacion de metales.
NO824038L (no) Nye kjemiske forbindelser som kan anvendes som flotasjonsmidler, og fremgangsmaate til utvinning av metall fra malmen ved anvendelse av de nye forbindelser
NO164665C (no) Fremgangsmaate for gjenvinning av aluminium fra avfallsmateriale.
NO157707C (no) Fremgangsmaate til elektrolytisk avsetning av metaller.