• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Recovery of fluoride values from carbonaceous waste cathode materials is achieved by reacting the waste materials with oxygen, water, and sulfur dioxide at temperatures between about 600 DEG C. and 1200 DEG C.
    公开号:SU1421254A3
    申请号:SU833546291
    申请日:1983-01-13
    公开日:1988-08-30
    发明作者:Вильям Гэмсон Бернард；Вейн Хейден Говард (Младший)
    申请人:Коммонвелт Алюминум Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    4 HS
    to eat
    four

    cm
    The invention of OTHOQHTCH to inorganic chemistry, namely to a method for producing hydrogen fluoride from crushed carbon-containing materials
    The purpose of the invention is to increase product yield.
    Example, In a laboratory fluidized bed reactor load 100 g of waste: cathode waste with a particle size of 9-1 mm and containing NaF in its composition. Air, sulfur dioxide and steam, which are preheated, are fed to the reactor. As the material of the fluidized bed, 2 kg of bauxite is used.
    After the reaction, the hot gases are cooled, condensed and passed through aqueous solutions to absorb hydrogen fluoride,
    Table 1 presents the results of pyrosulfolysis of spent cathode waste,
    - -
    Sulfur dioxide is used in an amount close to stoichiometry.
    As follows from Table 1, when treating cathode waste with air and water vapor in the presence of sulfur dioxide, 97-98% recovery of fluorine is achieved.
    to
    jg
    421254
    Table 2 shows the data on the degree of conversion of the fluorine contained in the waste to hydrogen fluoride, depending on the heating temperature.
    As follows from tabLo2, the maximum degree of conversion of the fluorine contained in the waste to hydrogen fluoride occurs at 77.5-1.
    The implementation of the proposed method allows the recycling of waste containing fluorine in a bound form to hydrogen fluoride and thereby reduce environmental pollution.
    权利要求:
    Claims (2)
    [1]
    Invention Formula
    1, a method for producing hydrogen fluoride from crushed carbon-containing materials containing fluoride, which involves treating them in a high-temperature regime of a fluidized bed in an atmosphere of oxygen and water vapor and then removing the product, characterized in that the process is carried out in the presence of sulfur dioxide at 775-1050 С
    [2]
    2. A process according to claim 1, wherein the carbon-containing material is used with a particle size
    1-5 mm.
    Table 1
    table 2
    Continued table. 2
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1421254A3|1988-08-30|Method of producing hydrogen fluoride
    US3359069A|1967-12-19|Process for production of sulfur dioxide containing gases from waste products containing ammonium salts of sulfur acids
    CN109277398B|2020-12-01|Safe and harmless treatment method for aluminum ash
    GB1470529A|1977-04-14|Process for producing sulphur from sulphur oxide
    CA1172427A|1984-08-14|Thermal decomposition of aluminum chloridehexahydrate
    GB963089A|1964-07-08|Process for the production of fluorine compounds from fluosilicic acid
    CA2185233A1|1995-09-14|Process for preparing calcium cyanamide from urea
    US5942201A|1999-08-24|Process utilizing titanium dioxide as a catalyst for the hydrolysis of carbonyl sulfide
    CN105439870B|2017-10-31|A kind of N of recovery, the method for N ' dicyclohexylurea |s recycling
    US3477830A|1969-11-11|Production of sinterable uranium dioxide
    US4277449A|1981-07-07|Dry reaction process of asbestos tailings and ammonium sulfate
    US4311502A|1982-01-19|Wet scrubbing-pelletizing method
    US4225573A|1980-09-30|Process for reductive calcining of magnesium sulfate
    US3140152A|1964-07-07|Process for preparing and recovering of substantially anhydrous hydrogen fluoride gas from a dry alkali metal bifluoride
    US1911004A|1933-05-23|Manufacture of silicon-diamminotetrafluoride
    US2402471A|1946-06-18|Calcining alum
    US4248849A|1981-02-03|Process for the continuous dehydration and calcination of hydrated aluminum fluoride for the manufacture of high purity aluminum fluoride
    US3086846A|1963-04-23|Process for the recovery of sulfuric acid from metallic sulfates
    GB2119779A|1983-11-23|Process for preparing alkali metal silicate solutions in a static reactor
    CN110255592A|2019-09-20|A kind of technique and its application with Waste Sulfuric Acid processing desulphurizing magnesium slag production magnesium sulfate and magnesia
    US2728638A|1955-12-27|Process for the manufacture of carbonyl sulfide
    CA1271156A|1990-07-03|Method and apparatus for the cooling of coke
    US2798802A|1957-07-09|Method for the treatment of waste ferrous sulfate liquors
    SU1657473A1|1991-06-23|Method of producing thermally expanded graphite
    GB1127145A|1968-09-11|Process of producing pure iron powder and product thereof
    同族专利:
    公开号 | 公开日
    JPH034481B2|1991-01-23|
    SE8300133L|1983-01-12|
    NZ200593A|1985-08-16|
    FI830027L|1983-01-05|
    FI72953C|1987-08-10|
    EP0078304B1|1987-09-16|
    SE439915B|1985-07-08|
    US4355017A|1982-10-19|
    CA1166426A|1984-05-01|
    JPS58500663A|1983-04-28|
    SE8300133D0|1983-01-12|
    DK11283A|1983-01-13|
    BR8207685A|1983-04-12|
    EP0078304A4|1984-02-03|
    MX158109A|1989-01-09|
    FI830027A0|1983-01-05|
    FI72953B|1987-04-30|
    EP0078304A1|1983-05-11|
    WO1982004036A1|1982-11-25|
    DE3277301D1|1987-10-22|
    DK11283D0|1983-01-13|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US1871723A|1929-05-29|1932-08-16|Aluminum Co Of America|Process for the recovery of cryolite|
    US2732283A|1951-02-23|1956-01-24|O minutes |
    FR1271252A|1960-07-29|1961-09-08|Electrochimie Soc|Pyrohydrolysis process|
    US4113832A|1977-11-28|1978-09-12|Kaiser Aluminum & Chemical Corporation|Process for the utilization of waste materials from electrolytic aluminum reduction systems|
    US4160808A|1978-05-30|1979-07-10|Andersen John N|Pyrohydrolysis process for spent aluminum reduction cell linings|
    US4160809A|1978-07-24|1979-07-10|Kaiser Aluminum & Chemical Corporation|Modified pyrohydrolysis process for spent aluminum reduction cell linings|
    US4158701A|1978-11-06|1979-06-19|Kaiser Aluminum & Chemical Corporation|Pyrohydrolysis system for processing fluorine-containing spent and waste materials|
    GB2056425A|1979-08-06|1981-03-18|Alcan Res & Dev|Treatment of wastes containing water-leachable fluorides|
    GB2056422A|1979-08-16|1981-03-18|Alcan Res & Dev|Processing of Spent Cell Lining Materials from Electrolytic Reduction Cells for Production of Aluminium|
    GB2059403A|1979-08-29|1981-04-23|Alcan Res & Dev|Treatment of fluoride- containing waste|DE3149360C2|1981-12-12|1990-01-11|Biotest Ag, 6000 Frankfurt, De|
    AU2323584A|1983-01-11|1984-12-13|Oabrand Pty. Ltd.|Reduction of halogens in carbonaceous material|
    US4444740A|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|1983-02-17|1988-05-10|Williams Technologies, Inc.|Process for producing a clean hydrocarbon fuel|
    US4695290A|1983-07-26|1987-09-22|Integrated Carbons Corporation|Integrated coal cleaning process with mixed acid regeneration|
    US4753033A|1985-03-24|1988-06-28|Williams Technologies, Inc.|Process for producing a clean hydrocarbon fuel from high calcium coal|
    GB2198722B|1986-12-22|1991-04-17|Comalco Alu|Process for the recovery of fluoride values|
    US4763585A|1987-09-08|1988-08-16|Ogden Environmental Services|Method for the combustion of spent potlinings from the manufacture of aluminum|
    DE4201831A1|1992-01-24|1993-07-29|Metallgesellschaft Ag|METHOD FOR THE DISPOSAL OF RESIDUES CONTAINING FLUORINE AND CYANIDE CONTAINERS|
    US5776426A|1992-07-24|1998-07-07|Comalco Aluminium Limited|Treatment of solid material containing fluoride and sodium including mixing with caustic liquor and lime|
    US5531903A|1995-03-15|1996-07-02|Cominco Ltd.|Fluoride removal from metal sulphate solution and a method of waste utilization|
    US5955042A|1995-12-08|1999-09-21|Goldendale Aluminum Company|Method of treating spent potliner material from aluminum reduction cells|
    US6217840B1|1995-12-08|2001-04-17|Goldendale Aluminum Company|Production of fumed silica|
    US6248302B1|2000-02-04|2001-06-19|Goldendale Aluminum Company|Process for treating red mud to recover metal values therefrom|
    AU2002952159A0|2002-10-18|2002-10-31|Regain Technologies Pty Ltd|Treatment of Smelting By-Products|
    DE102007056580B3|2007-11-23|2009-04-02|Forschungszentrum Karlsruhe Gmbh|Process and apparatus for the air flow sulphation of flue gas components|
    CN102011148B|2010-12-02|2012-07-04|云南云铝涌鑫铝业有限公司|Method for innocent treatment of aluminum electrolysis anode carbon residue and recovery of electrolyte|
    CN102079534B|2010-12-16|2012-09-26|多氟多化工股份有限公司|Method for producing cryolite by using fluorine-containing waste residues of electrolytic aluminium|
    FR2975405B1|2011-05-16|2013-05-17|Solios Environnement|METHOD AND DEVICE FOR LIMITING EMISSIONS OF GASEOUS POLLUTANTS BY ANODE MEGOTS|
    CN103088365B|2013-02-01|2017-07-25|贵阳冶金机电工艺有限公司|A kind of electrolytic aluminium process for cleanly preparing|
    RU2616753C1|2015-11-13|2017-04-18|Общество с ограниченной ответственностью "Объединенная Компания РУСАЛ Инженерно-технологический центр"|Procedure for processing fluorine-carbon-containing wastes of aluminium electrolytic production|
    CN105344697B|2015-11-25|2017-06-16|北京森泉伟业科技有限公司|A kind of aluminium cell disassembles the harmless treatment device and technique of waste material|
    CN106185818B|2016-08-05|2018-12-21|北京矿冶研究总院|It is a kind of for disposing the high temperature continous way processing system of electrolytic aluminium waste cathode|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US06/263,438|US4355017A|1981-05-14|1981-05-14|Aluminum electrolytic cell cathode waste recovery|
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