• 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:
    1499577 Removal of metal ions by cementation OUTOKUMPU OY 16 Sept 1975 [20 Sept 1974] 38051/75 Heading C1C A process for purifying an aqueous solution containing, as impurities, metal ions which precipitate as arsenides, comprises cementing the impurities in the aqueous solution under reducing conditions in the presence of (a) arsenic, and/or compounds thereof as auxiliary agents; (b) as catalyst, a cementate formed in a previous cementation performed in substantially the same manner. Reducing conditions may also be electrolytic. The quantity of pre-formed cementate may be 5-150 g/l of aqueous solution. The method may be used for treating raw solution from the production of zinc (e.g. removing Co, Ni, Cu, Cd).
    公开号:SU793373A3
    申请号:SU752175495
    申请日:1975-09-19
    公开日:1980-12-30
    发明作者:Педер Фуглеберг Сигмунд；Калеви Растас Юсси
    申请人:Оутокумпу Ой (Фирма)；
    IPC主号:
    专利说明:

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    The invention relates to methods for the purification of aqueous solutions of zinc sulphate. The main raw material used in the electrolytic zinc industry is zinc concentrate, which is subjected to reductive roasting and then leached with sulfuric acid. The resulting zinc sulphate solution contains a number of nobler elements than zinc — for example, copper, nickel, cobalt, cadmium, thallium, which must be removed from the solution before it is fed for electrolysis, since they can be deposited on the electrodes. This phenomenon is undesirable for two reasons: a) they contaminate precipitates of zinc, b) some of. These elements are electrolytic reactors that cause side reactions. A two-stage process for purifying a solution of zinc sulphate from metal impurities, such as nickel, cobalt and copper, is known. That the zinc-cadmium cake pulp from the second purification stage is loaded into the initial solution to be purified, and in the second stage, the separation of impurities is produced by zinc dust 1J. There is also known a method of purifying aqueous solutions of zinc sulphate from metal impurities by precipitating them in the form of a cake in a reducing medium created by treatment with zinc dust in the presence of compounds of tin, tin, mercury, etc. Ave 80-90 ° C G2. A disadvantage of the known methods is the high consumption of zinc dust in the order of 150% of stoichiometry. The purpose of the invention is to reduce the consumption of zinc dust. This goal is achieved by the fact that the cleaning of zinc sulphate solution from metal impurities is carried out by step processing of zinc dust at elevated temperatures in the presence of small compounds with the introduction of the cake obtained in the subsequent stages in an amount of 5-150 g / l. A distinctive feature of the proposed method is that the initial solution is in contact with the cake formed during the cleaning process and taken in an amount of 5-150 g / l. The method is carried out as follows. A solution of zinc sulphate containing impurities of cobalt, nickel, one, etc., evolved copper sulfate, three-. oxide of arsenic and zinc powder until cobalt is completely converted to spec. Next, the spec is allowed to settle to the bottom of the reactor, and the purified solution is drained. The next portion of the solution to be purified is poured into the reactor with the cake and the operation is repeated anew. The amount of zinc powder required for complete cobalt and nickel bonding is reduced. With an increase in the amount of cake. At the stage of removal of cobalt and mouse nickel, they are added in an amount sufficient to bond the corresponding CTBjT (of its metal. After the first stage, the solution also contains cadmium and thallium, which are removed in the cadmium removal step with zinc powder. V This method produces a substantially pure copper cake that can be used as a raw material for the production of copper. Cobalt and nickel are found in the arsenal This cake can be used to produce metallic cobalt and nickel, in which case the treatment should be carried out so as to remove the mixture. An example of such treatment is the oxidative leaching of the arsenide cake with an aqueous solution of sodium hydroxide in an autoclave at 130 In this case, copper, cobalt, and nickel are transferred to hydroxide oxide cake, an aqueous solution of the arsenate. The cake is sent to extract copper, cobalt, and nickel, and sodium arsenate is crystallized from the solution. I. . . According to the invention, the amount of this cake is at least 5 g / l, preferably 10-150 g / l and most P1, preferably 30-50 g / l of solution. In a continuously operating multi-stage reactor, the cake is returned to the previous stage, preferably from the last stage to the first. In a periodic process, after draining the solution in the reactor, a part of the cake is left ..
    权利要求:
    Claims (1)
    [1]
    METHOD FOR CLEANING ZINC SULPHATE SOLUTIONS from nickel, cobalt and copper ions by precipitating them in the form of cake by stepwise treatment with zinc dust in the presence of arsenic compounds at elevated temperature, characterized in that, in order to reduce the consumption of zinc dust, the initial solution is contacted with the cake formed in the cleaning process and taken in an amount of 5-150 g / l.
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    类似技术:
    公开号 | 公开日 | 专利标题
    US4071357A|1978-01-31|Process for recovering zinc from steel-making flue dust
    US3434947A|1969-03-25|Process for the separation of iron from metal sulphate solutions and a hydrometallurgic process for the production of zinc
    US4229270A|1980-10-21|Process for the recovery of metal values from anode slimes
    JP4866732B2|2012-02-01|Anode sludge treatment method
    US3985857A|1976-10-12|Process for recovering zinc from ferrites
    US3652264A|1972-03-28|Recovery of zinc values from zinc plant residue
    JP6336469B2|2018-06-06|Method for producing scandium-containing solid material with high scandium content
    US3826648A|1974-07-30|Method of purifying zinc sulphate solutions
    SU1165238A3|1985-06-30|Method of hydrometallurgical processing of raw material containing non-ferrous metals and iron
    SU867319A3|1981-09-23|Method of processing materials containing arsenic and metal
    US4128617A|1978-12-05|Treatment of zinc calcines for zinc recovery
    SU793373A3|1980-12-30|Method of purifying zinc sulfate solutions
    US4594102A|1986-06-10|Recovery of cobalt and nickel from sulphidic material
    US4724128A|1988-02-09|Method for purifying molybdenum
    US2076738A|1937-04-13|Recovery of tellurium
    US3699208A|1972-10-17|Extraction of beryllium from ores
    US4789446A|1988-12-06|Method of processing residues from the hydrometallurgical production of zinc
    US1952290A|1934-03-27|Process for the recovery of arsenic
    US4643884A|1987-02-17|Purification of molybdenum trioxide
    US3174821A|1965-03-23|Purification of yellow cake
    US4049514A|1977-09-20|Zinc hydrometallurgical process
    RU2079561C1|1997-05-20|Method of oxidized polymetallic materials processing
    US2695227A|1954-11-23|Indium purification using proteinaceous materials
    US4299810A|1981-11-10|Process for separating selenium and telurium from each other
    EP0010365A1|1980-04-30|Treatment of zinc plant leach residues for recovery of the contained metal values
    同族专利:
    公开号 | 公开日
    BR7506050A|1976-08-03|
    DE2539618A1|1976-04-01|
    IT1047550B|1980-10-20|
    DE2539618B2|1977-11-17|
    NL183304C|1988-09-16|
    CA1048176A|1979-02-06|
    FI52595C|1977-10-10|
    NO139354C|1979-02-21|
    ZA755663B|1976-08-25|
    FI275474A|1976-03-21|
    JPS5749492B2|1982-10-22|
    NO753205L|1976-03-23|
    US3979266A|1976-09-07|
    NL7510697A|1976-03-23|
    AU499355B2|1979-04-12|
    NO139354B|1978-11-13|
    YU236375A|1982-06-30|
    FI52595B|1977-06-30|
    GB1499577A|1978-02-01|
    JPS5156796A|1976-05-18|
    DE2539618C3|1978-07-06|
    BE833552A|1976-01-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3672868A|1968-04-09|1972-06-27|Nisso Kinzoku Kk|Zinc dust for removal of cobalt from electrolyte|CA1117897A|1979-03-29|1982-02-09|George M. Freeman|Continuous process for the purification ofzinc plant electrolyte|
    US4240826A|1979-09-13|1980-12-23|Texasgulf Inc.|Process for the recovery of arsenic as a zinc arsenate and its _utilization in the purification of zinc plant electrolytes|
    US4437953A|1981-06-02|1984-03-20|Electrolytic Zinc Company Of Australasia Limited|Process for solution control in an electrolytic zinc plant circuit|
    JPS59136491U|1983-03-03|1984-09-12|
    FI115537B|2003-03-14|2005-05-31|Outokumpu Oy|Method for the removal of thallium from a solution containing zinc|
    CN106636642B|2016-11-16|2018-05-25|任昊琦|A kind of method of purification zinc powder utilization rate in raising zinc hydrometallurgy|
    CN108251643B|2018-03-05|2020-02-04|云南驰宏锌锗股份有限公司|Method for removing trace selenium and tellurium in zinc sulfate solution by oxidation method|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI742754A|FI52595C|1974-09-20|1974-09-20|Method for purifying aqueous solutions of metal ions precipitating as arsenides.|
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