YU46337B - Postopek za obdelavo s silikopirohidrolizo izrabljenega ogljenega materiala, ki izvira iz kadi za elektrolizo po halluheroultu - Google Patents

Postopek za obdelavo s silikopirohidrolizo izrabljenega ogljenega materiala, ki izvira iz kadi za elektrolizo po halluheroultu

Info

Publication number
YU46337B
YU46337B YU105488A YU105488A YU46337B YU 46337 B YU46337 B YU 46337B YU 105488 A YU105488 A YU 105488A YU 105488 A YU105488 A YU 105488A YU 46337 B YU46337 B YU 46337B
Authority
YU
Yugoslavia
Prior art keywords
carbon
ratio
treatment
sodium
phase
Prior art date
Application number
YU105488A
Other languages
English (en)
Other versions
YU105488A (en
Inventor
M. Leroy
Original Assignee
Aluminium Pechiney
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 Aluminium Pechiney filed Critical Aluminium Pechiney
Publication of YU105488A publication Critical patent/YU105488A/xx
Publication of YU46337B publication Critical patent/YU46337B/sh

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)
  • Removal Of Specific Substances (AREA)
  • Electrolytic Production Of Metals (AREA)
  • Silicon Compounds (AREA)

Abstract

in obstaja iz mešanice ogljičnih produktov in siliko-gliničnih produktov, impregniranih z mineralnimi fluorovimi spojinami, zlasti natrija, kalcija ali aluminija, označen s tem, da pretvorimo te braške z obdelavo pri temperaturi vsaj 1000В° C, kot 1000 do 1400В°C, s pomočjo oksidirnega plina, kot zraka, ki je lahko obogaten s kisikom, pri čemer je kisik v atomskem deležu, z ozirom na količino ogljika, ki ustreza razmerju O2 (C0,5, nadalje vode kot vodne pare ali pare, v atomskem deležu, ki ustreza razmerju H2O)F 0,5, sestavo neogljenega dela braške pa nastavimo po potrebi s kremenico SiO2 tako, da atomski delež sestavin ustreza razmerju Si(Na/2) + Ca, deloma v plinsko fazo, ki povleče s seboj pretežni del fluora v obliki fluorovodikove kisline, in ogljika v obliki ogljikovega dioksida in monoksida, po drugi strani pa v fazo, ki je vsaj delno tekoča ter vsebuje silicij, aluminij, kalcij in natrij ter večino drugih nečistoč kot železo, titan, teške kovine, v obliki oksidnih spojin, pretežno v obliki silikatov, pri čemer so oksidne spojine, tvorjene v trdni ali tekoči fazi, pretežno natrijevi silikati Na2SiO3, Na2Si2O5, Na4SiO4 in siliko-aluminati NaAlSiO4 in CaAl2Si2O8. Prijava sadrži još 5 zavisnih zahteva.
YU105488A 1987-06-01 1988-05-31 Postopek za obdelavo s silikopirohidrolizo izrabljenega ogljenega materiala, ki izvira iz kadi za elektrolizo po halluheroultu YU46337B (sh)

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 (2)

Publication Number Publication Date
YU105488A YU105488A (en) 1989-06-30
YU46337B true YU46337B (sh) 1993-05-28

Family

ID=9351847

Family Applications (1)

Application Number Title Priority Date Filing Date
YU105488A YU46337B (sh) 1987-06-01 1988-05-31 Postopek za obdelavo s silikopirohidrolizo izrabljenega ogljenega materiala, ki izvira iz kadi za elektrolizo po halluheroultu

Country Status (17)

Country Link
EP (1) EP0294300B1 (sh)
CN (1) CN1013248B (sh)
AU (1) AU603672B2 (sh)
BR (1) BR8802626A (sh)
CA (1) CA1334049C (sh)
DE (1) DE3867130D1 (sh)
ES (1) ES2027410T3 (sh)
FR (1) FR2615764B1 (sh)
GR (1) GR3003448T3 (sh)
HU (1) HU204717B (sh)
IN (1) IN169595B (sh)
IS (1) IS1513B (sh)
NO (1) NO166922C (sh)
NZ (1) NZ224814A (sh)
RU (1) RU1782226C (sh)
YU (1) YU46337B (sh)
ZA (1) ZA883823B (sh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
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
DE69427692T2 (de) * 1993-04-06 2002-05-02 Ausmelt Ltd Schmelzen von kohlenstoffhaltigem 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)

* Cited by examiner, † Cited by third party
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

Also Published As

Publication number Publication date
IS3352A7 (is) 1988-12-02
CA1334049C (fr) 1995-01-24
YU105488A (en) 1989-06-30
EP0294300A1 (fr) 1988-12-07
CN88103256A (zh) 1988-12-14
NO882373L (no) 1988-12-02
ES2027410T3 (es) 1992-06-01
HUT48138A (en) 1989-05-29
DE3867130D1 (de) 1992-02-06
FR2615764B1 (fr) 1989-08-18
IN169595B (sh) 1991-11-16
ZA883823B (en) 1989-02-22
NO166922C (no) 1991-09-18
CN1013248B (zh) 1991-07-24
AU1678788A (en) 1988-12-01
EP0294300B1 (fr) 1991-12-27
AU603672B2 (en) 1990-11-22
GR3003448T3 (en) 1993-02-17
NO166922B (no) 1991-06-10
BR8802626A (pt) 1988-12-27
NO882373D0 (no) 1988-05-30
NZ224814A (en) 1991-02-26
RU1782226C (ru) 1992-12-15
IS1513B (is) 1992-11-04
FR2615764A1 (fr) 1988-12-02
HU204717B (en) 1992-02-28

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