• 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:
    A method of regenerating an activated carbon which has had its collecting capacity for gold adsorption reduced through use which includes the step of contacting the carbon with an aqueous coppersalt solution having a pH of less than 6. The regeneration is improved if the solution contains carbonic acid or if the copper salt solution treatment is followed by treatment with a carbonate or bicarbonate solution.
    公开号:SU904506A3
    申请号:SU792824349
    申请日:1979-10-10
    公开日:1982-02-07
    发明作者:Джон Девидсон Реймонд；Веронезе Витторио
    申请人:Крюсибль С.А. (Инофирма)；
    IPC主号:
    专利说明:

    (54) METHOD FOR REGENERATION OF ACTIVATED COAL USED FOR GOLD EXTRACTION
    I
    This invention relates to the regeneration of activated carbon used in the process of extracting gold from ore.
    A known method for the recovery of gold from a solution using activated carbon. The gold particles are adsorbed by the activated carbon from the solution, after which they are eluted from the activated carbon using water that is deionized or otherwise melted. Mass transfer between the solution and activated carbon can be carried out even when the solution is still in the form of pulp D3.
    There is also known a method of regenerating activated carbon used for the extraction of gold, which consists in contacting the coal with a desorbing liquid at an overpressure and a temperature of 150-165 ° C. Water, diluted water, is used as the desorbing liquid.
    alkali metal or alkali cyanide solutions. COAL contains 5–20 kg of gold / ton of coal. In a manner known for consuming gold by gold, the concentration of gold on coal is 100 g / t or less, i.e. almost complete, gold desorption from coal 21 is carried out.
    However, the known method does not allow
    10 It is necessary to remove various organic substances from the surface of the coal, such as solvents, lubricants, etc. whereby the ability of activated carbon to adsorb gold
    15 decreases during use.
    The aim of the invention is to increase the degree of regeneration of the activated carbon and its sorption capacity.
     This goal is achieved according to the method of regenerating the activated carbon used to extract gold by treating it with an aqueous solution of a metal salt.
    权利要求:
    Claims (3)
    [1]
    Claim
    1 . A method for regenerating activated carbon used to extract gold by treating it with an aqueous solution of a metal salt, characterized in that, in order to increase the degree of regeneration and sorption capacity of the carbon, the activated carbon is treated with a solution of copper salt in the presence of an alkali metal carbonate or bicarbonate, or or ammonia or when the reg of the generating solution is saturated with carbon dioxide.
    [2]
    2. The method of pop. 1, characterized in that as a solution of copper salt is used a 0.5-5% solution of copper sulfate.
    [3]
    3. The method according to PP. 1 and 2, characterized in that use a 2-5% solution of carbonate or bicarbonate of an alkali metal or ammonium.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU904506A3|1982-02-07|Method of activated coal regeneration in gold extraction
    US4394354A|1983-07-19|Silver removal with halogen impregnated activated carbon
    US4164545A|1979-08-14|Use of manganese dioxide absorbent in treating waste gases
    US3970737A|1976-07-20|Metal, particularly gold, recovery from adsorbed cyanide complexes
    EA005829B1|2005-06-30|Method for eliminating traces of mercury in gases
    US2478652A|1949-08-09|Process for the recovery of precious metal values
    SU546360A1|1977-02-15|The method of extracting silver from industrial solutions
    CA1180315A|1985-01-02|Stripping gold or silver from particulate materials
    RU2007484C1|1994-02-15|Method of extraction of molybdenum from solutions
    RU2064513C1|1996-07-27|Method of extracting gold and silver from the activated carbon
    US2288547A|1942-06-30|Process of working up complex ammoniacal solutions of metal
    US4278643A|1981-07-14|Resin sorption process for extracting tungsten
    GB1573685A|1980-08-28|Recovery of metal values
    RU2159216C1|2000-11-20|Method of sorption recovery of uranium from silicon-containing solutions and pulse
    SU1327959A1|1987-08-07|Method of extracting copper from solutions
    SU1032810A1|1986-09-30|Method of producing rare metals
    SU1669994A1|1991-08-15|Method of recovering gold and silver from cyanide solutions containing non-ferrous metals
    GB949952A|1964-02-19|Process for the recovery of carbon disulphide and sulphur from exhaust gas
    RU2089496C1|1997-09-10|Method of the modified active carbon producing
    Nathsarma et al.1989|Recovery of Cobalt| From Ammoniacal Ammonium Sulphate Solutions by Lignite Adsorption
    SU1002389A1|1983-03-07|Method for recovering germanium from solutions by sorption
    SU1318522A1|1987-06-23|Method for regenerating active carbon
    RU2034065C1|1995-04-30|Method for processing flotation products containing gold
    US2267293A|1941-12-23|Recovery of hydrocyanic acid
    RU2057072C1|1996-03-27|Method for recovery of osmium from acid solutions
    同族专利:
    公开号 | 公开日
    US4267069A|1981-05-12|
    IL58329D0|1979-12-30|
    CA1125729A|1982-06-15|
    AU524296B2|1982-09-09|
    DE2961170D1|1982-01-07|
    EP0010381B1|1981-10-28|
    ZA785864B|1979-12-27|
    JPS55100213A|1980-07-31|
    EP0010381A1|1980-04-30|
    BR7906677A|1980-07-15|
    AU5107379A|1980-04-24|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CH507875A|1969-09-12|1971-05-31|Zellweger Uster Ag|Process for the catalytic detoxification of aqueous cyanide solutions|
    IN140947B|1973-11-23|1977-01-01|Crucible Sa|
    JPS5247757B2|1974-01-16|1977-12-05|
    US3920403A|1974-02-01|1975-11-18|Us Interior|Method of desorbing gold from activated carbon|
    US3935006A|1975-03-19|1976-01-27|The United States Of America As Represented By The Secretary Of The Interior|Process for eluting adsorbed gold and/or silver values from activated carbon|
    US4208378A|1976-02-24|1980-06-17|The United States Of America As Represented By The Secretary Of The Interior|Desorption of gold from activated carbon|
    ZA766476B|1976-10-28|1978-06-28|Anglo Amer Corp South Africa|Gold recovery|
    US4094668A|1977-05-19|1978-06-13|Newmont Exploration Limited|Treatment of copper refinery slimes|DE3042724A1|1980-11-13|1982-07-22|Hoechst Ag, 6000 Frankfurt|METHOD FOR SEPARATING METALS FROM AQUEOUS SOLUTIONS|
    US4528166A|1983-05-05|1985-07-09|Sentrachem Limited|Recovery of gold and/or silver from cyanide leach liquors on activated carbon|
    US4552589A|1984-01-27|1985-11-12|Getty Oil Company|Process for the recovery of gold from refractory ores by pressure oxidation|
    US4778519A|1987-02-24|1988-10-18|Batric Pesic|Recovery of precious metals from a thiourea leach|
    US4979987A|1988-07-19|1990-12-25|First Miss Gold, Inc.|Precious metals recovery from refractory carbonate ores|
    US5441048A|1988-09-08|1995-08-15|Sudor Partners|Method and apparatus for determination of chemical species in perspiration|
    US7604783B2|2004-12-22|2009-10-20|Placer Dome Technical Services Limited|Reduction of lime consumption when treating refractor gold ores or concentrates|
    US8061888B2|2006-03-17|2011-11-22|Barrick Gold Corporation|Autoclave with underflow dividers|
    US8252254B2|2006-06-15|2012-08-28|Barrick Gold Corporation|Process for reduced alkali consumption in the recovery of silver|
    JP5792664B2|2012-03-09|2015-10-14|水ｉｎｇ株式会社|Method for regenerating used activated carbon, activated activated carbon and method for producing the same|
    CN103240067B|2013-04-24|2015-06-17|复旦大学|Persulfate composite solution for regeneration of phenol adsorption saturated activated carbon and preparation method and application thereof|
    JP6463175B2|2015-03-06|2019-01-30|Ｊｘ金属株式会社|Activated carbon regeneration method and gold recovery method|
    JP6441127B2|2015-03-06|2018-12-19|Ｊｘ金属株式会社|Activated carbon regeneration method and gold recovery method|
    AU2016230060B2|2015-03-06|2018-05-10|Jx Nippon Mining & Metals Corporation|Activated carbon regeneration method and gold recovery method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ZA00785864A|ZA785864B|1978-10-18|1978-10-18|Regeneration of activated carbon|
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