• 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:
    The invention relates to a process for the froth flotation of complex ores. In accordance with this invention, froth flotation is carried out by using a collector and froth flotation conditions for which it has been calculated in advance that the said mineral and the collector form stable surface compounds. The conditions include the electrochemical potential of the system, the concentration of the collector, the pH, and other physical factors. According to this invention it has been observed that by adjusting the potential and the concentration of the collector separately for each mineral, each mineral can be frothed out separately from the slurry, the process being in this case specific for the mineral. When so desired, the different minerals of the ore slurry can also be frothed simultaneously by selecting the conditions where the Pourfaix-type diagrams of all minerals in said complex ore overlap under the conditions in question.
    公开号:SU1466637A3
    申请号:SU833662465
    申请日:1983-11-01
    公开日:1989-03-15
    发明作者:Олави Хеймала Сеппо；Матти Юхани Саари Каарло
    申请人:Оутокумпу Ой (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the enrichment of minerals and can be used in the propulsion enrichment of metal-containing minerals.
    The aim of the invention is to increase the extraction of minerals and reduce the consumption of the collector.
    Example 1. Gold-bearing copper-lead ore with a gold grade of 5 g / t, copper 0.7, lead 0.2% was tested. Aerofin 34ISA was used as a collector, the concentration of which in the aqueous phase was maintained at a level of 20 mg / l.
     cm
    Capacity control was performed using sodium sulfide using a titrator. At the beginning of the froth flotation process, the potential was set slightly below 200 mV, and then with controlled speed increased to a value at which the adhesion of the substance — the collector — to the poplar flotation by a known method continued for 3 minutes. In the test using the proposed method, the potential from the cathode side. with respect to sulfide, it first increased to -50 mV, and then to o mV relative to the saturated calomel electrode in such a way that
    the surface of the mineral, Po, has not yet reached the concentration of xanthate in
    the pulp solution was 5 mg / l (-50 mV) in the process of froth copper flotation and 60 mg / l (o mV) relative to the same electrode in the process of froth flotation, which would result in separate concentrates Cu and Ni.
    A sufficient amount for froth flotation, the pH of the pulp was maintained at 8.5. Extraction of copper in the first concentrate of green malachite was 68% with a copper concentration of 6.7%. The total extraction of copper into the Cu concentrate was 81%, and the yield of Po in the concentrate was 8%. The concentration of gold in the first concentrate obtained was 38 g / t, and its recovery was 76%. The total extraction in the concentrate was 92%. Then the potential was increased by 100 mV, and the concentration of the collector in the pulp solution was increased by 15 mg / l. The total extraction of lead in concentrate Ro was 72 and copper 9 at a concentration of Ro 38%. The corresponding test was carried out without controlling the concentration of the substance - the collector, but with potential control. In this case, the extraction of copper in the first total concentrate was 31, with a concentration of 3.7%. The total copper recovery was 64, and lead 58%. The extraction of gold in this first concentrate was 48, and its total recovery was 70%.
    Example 2. Experimental.
    the process of froth flotation was carried out by the method of concentration of MgO and in
    For ore processing, the structure and grinding character of which created difficulties during the normal froth flotation process. Foam flotation was subjected to Ni-Cu sulfide ore concentration,%: NiO, 45, copper 0.2, sulfur 1.4, MgO. 3t and Fe 9. It is characteristic of this raw material that during the grinding process its mixed particles of FeeO-Ni-cylphide- (pentlandite) are formed and that the silicate Mg is obtained in a very finely divided form. The solid material was subjected to a froth flotation process using the known and proposed methods. In both tests, a pulp with a density of 20% was used, and ethyl xanthate was used as the material collector. Process
    the pulp solution was 5 mg / l (-50 mV) in the process of froth flotation of copper and 60 mg / l (o mV) relative to the same electrode in the process of froth flotation, as a result of which separate concentrates Cu and Ni were obtained.
    In the control process, neither the potential nor the concentration of the substance — the collector in the pulp solution — was controlled; as a result, in the first total concentrate, the extraction of Ni was 45%, and the total extraction —..- 59% at a nickel concentration of 2.1%;
    for copper, 52% and 66%, respectively. In the experiment conducted using the proposed method, the values of Ni recovery after the first and second stages of Ni froth flotation were 57 and 71% with Ni concentration of 2.75%, and the recovery after the first stage of the Froth flotation of Cu in concentrate was 76%. In addition, in the second stage, i.e. At the stage of Ni foamy flotation, 12% of copper was transferred to Ni concentrate. In addition, as a result of the process according to the proposed method, a significantly reduced
    features at repeated operations.
    A modern automatic data processing system creates excellent conditions for automating the proposed process. The range of froth flotation process conditions in terms of equilibrium as well as kinetics can be determined for each mineral. The feed rates of materials used in the foam float process can be determined separately and, based on the data stored in the computer memory, you can automatically calculate the values of the parameters that control the froth flotation process, taking into account the situation on the world market, for example, prices. for refined metals and economy5
    The practical feasibility of their processing.
    The use of the offer will allow to increase the mineral extracts and reduce the consumption of l.
    权利要求:
    Claims (6)
    [1]
    1. Method of froth flotation of metal-containing minerals, including preliminary determination of the optimal value of the electrochemical potential of the pulp for the extracted mineral, continuous measurement and control of the electrochemical potential of the pulp to the optimum value during flotation, in order to increase the recovery of minerals and reduce the amount of collector , determine the sequence of optimal electrochemical potentials for all extracted minerals by setting the range in the systems, the electrochemical potential of pH, within which each extracted mineral forms a stable surface compound with the collector, and the regulation of the electrochemical potential of the pulp to an optimum value for each extracted mineral
    five
    0
    5 o
    The laser is measured by its value, in which the collector is completely in solution, while the measurement of the electrochemical potential is carried out with a mineral electrode and the sequence of extraction of minerals corresponds to the sequence of values of the electric potential.
    [2]
    2. The method according to claim 1, is different from the fact that the regulation of the electrochemical potential is carried out by electrochemical exposure,
    [3]
    3. The method according to claim 1, is different from the fact that the regulation of the electrochemical potential of the pulp is carried out by the introduction of reagents.
    [4]
    A. The method according to claim 1, is different from the fact that the regulation of the electrochemical potential is carried out simultaneously by electrochemical exposure and the introduction of reagents.
    [5]
    5. A method according to claim 1, characterized in that the mineral electrodes are electrodes selected from the group of copper sulfide, silver sulfide, molybdenum sulfide.
    [6]
    6. Method according to paragraphs. 1 and 5, which is based on the fact that an electrode made of a floating mineral is used as a mineral electrode.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1466637A3|1989-03-15|Method of foam flotation of metal-containing materials
    US5110455A|1992-05-05|Method for achieving enhanced copper flotation concentrate grade by oxidation and flotation
    US3883421A|1975-05-13|Measurement of oxidation reduction potential in ore beneficiation
    US4011072A|1977-03-08|Flotation of oxidized copper ores
    MX2014013532A|2015-01-16|Method and apparatus for separation of molybdenite from pyrite containing copper-molybdenum ores.
    AU650355B2|1994-06-16|Processing complex mineral ores
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    US3968032A|1976-07-06|Process for concentrating lead and silver by flotation in products which contain oxidized lead
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    US3964997A|1976-06-22|Concentration of gold, sulphide minerals and uranium oxide minerals by flotation from ores and metallurgical plant products
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    CN105567992A|2016-05-11|Method for reducing hot-press oxidation and acid neutralization cost of refractory gold ores
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    JP2022032930A|2022-02-25|How to recover valuable metals
    Deng et al.2012|Influence of the Addition of Depressants during Grinding on Lead-Zinc Separation
    同族专利:
    公开号 | 公开日
    AU563041B2|1987-06-25|
    CA1222581A|1987-06-02|
    SE8305970D0|1983-10-31|
    SE8305970L|1984-05-03|
    MX160882A|1990-06-07|
    AU2066183A|1984-05-10|
    FI65025B|1983-11-30|
    FI823737A0|1982-11-02|
    SE460832B|1989-11-27|
    PH18652A|1985-08-23|
    US4561970A|1985-12-31|
    ZA837886B|1984-06-27|
    FI65025C|1984-03-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    CA903935A|1972-06-27|Dowa Mining Co.|Flotation method for separation cu and pb from cupb bulk concentrate|
    US1733570A|1928-04-03|1929-10-29|Harry R Wilson|Flotation process|
    US1893517A|1930-08-19|1933-01-10|Gaudin Antoine Marc|Separation of minerals by flotation|
    GB362961A|1930-09-03|1931-12-03|Reginald John Lemmon|Improvements in or relating to the recovery of minerals or metal values by froth flotation|
    US3339730A|1962-07-14|1967-09-05|Column Flotation Co Of Canada|Froth flotation method with counter-current separation|
    CA874700A|1968-12-13|1971-06-29|Weston David|Flotation of laterite nickel ores|
    US3883421A|1972-09-12|1975-05-13|Dale Emerson Cutting|Measurement of oxidation reduction potential in ore beneficiation|
    JPS5620068B2|1973-01-13|1981-05-11|
    JPS5077201A|1973-11-14|1975-06-24|
    ZA767089B|1976-11-26|1978-05-30|Tekplex Ltd|Froth flotation process and collector composition|FR2595058B1|1986-02-28|1992-06-05|Air Liquide|PROCESS FOR ENRICHMENT OF A SULFUR ORE|
    FI82773C|1988-05-13|1991-04-10|Outokumpu Oy|FOERFARANDE FOER STYRNING AV PROCESS.|
    US5110455A|1990-12-13|1992-05-05|Cyprus Minerals Company|Method for achieving enhanced copper flotation concentrate grade by oxidation and flotation|
    US5295585A|1990-12-13|1994-03-22|Cyprus Mineral Company|Method for achieving enhanced copper-containing mineral concentrate grade by oxidation and flotation|
    DE4238244C2|1992-11-12|1994-09-08|Metallgesellschaft Ag|Process for the selective flotation of a sulfidic copper-lead-zinc ore|
    AUPM953894A0|1994-11-16|1994-12-08|Commonwealth Industrial Gases Limited, The|Improvements to precious metals recovery from ores|
    JPH08224497A|1995-02-20|1996-09-03|Sumitomo Metal Mining Co Ltd|Floatation method for nonferrous metal valuable ore|
    AUPP594398A0|1998-09-15|1998-10-08|M.I.M. Holdings Limited|Collectorless flotation|
    FI119400B|2003-03-14|2008-10-31|Outotec Oyj|Procedure for regulating a process|
    FI116070B|2003-07-17|2005-09-15|Outokumpu Oy|Procedure for making gills|
    FI117941B|2005-10-13|2007-04-30|Outokumpu Technology Oyj|A process for dissolving metal sulfide minerals|
    FI122099B|2010-04-30|2011-08-31|Outotec Oyj|A method for recovering precious metals|
    WO2013021244A1|2011-08-10|2013-02-14|Ekmekci Zafir|A methodology to determine collector adsorption on sulphide minerals using electrochemical impedance spectroscopy analysis|
    RU2563479C2|2013-11-20|2015-09-20|Федеральное государственное бюджетное учреждение науки Институт технической химии Уральского отделения Российской академии наук|Reagent for flotation concentration of sulphide copper-nickel ores|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FI823737A|FI65025C|1982-11-02|1982-11-02|FOERFARANDE FOER ATT FLOTATINSANRIKA KOMPLEXA METALLFOERENINGAR|
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