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  • IMPC
    Comparison of the Flotation of Enargite Using Fresh and Seawater

    By L. Gutierrez, R. Yepsen, F. Alarcón

    Chile is the world's largest copper producer which is mostly in the form of sulfides for which froth flotation is the most efficient concentration process. As a result a concentrate that contains high

    Jan 1, 2018

  • IMPC
    Maximising The Value of a Wealth of Information

    By Rob Morrison, Andrew Scott

    "Long before a modern mine commences operations it has already become a wealth of information. After start up, it can generate enormous quantities of data - especially with semi-automated data acquisi

    Jan 1, 2003

  • IMPC
    Experimental Study on Effect of Grinding on the Flotation of High-Carbon Fly Ash

    By Y. Y. Li, Q. Chen, Y. X. Cai, Q. Zhang, S. Mao

    "Due to the influence of combustion conditions, the fly ash produced by some power plants has the problem of high-carbon content. The unburned carbon in fly ash can be removed by flotation, and the de

    Jan 1, 2018

  • IMPC
    Electrochemical study of sulfide flotation: Short story

    By Vladimir Vigdergauz

    "Electrochemical studies of metal sulfides in connection with their floatability are discussed. According Frumkin, sorption of electroneutral organic substances has a maximum near the potential of zer

    Jan 1, 2014

  • IMPC
    Exploiting process topology for fault diagnosis in a simulated pressure leaching system

    By Brian Lindner, Lidia Auret, Niel Knoblauch

    In this paper, a fault detection and identification framework based on feature extraction and topology extraction methods is proposed, and evaluated on a simulated base metals refinery high pressure l

    Jan 1, 2014

  • IMPC
    Effect of Salt Water on the Dynamics of Flocculation of Copper Sulphide Tailings Containing Kaolinite

    By P. Fawell, C. Castillo, C. Ihle

    "The need to reduce fresh water consumption has pushed many Chilean mining companies to utilize seawater obtained from distant locations. At the same time, increasing amounts of fine particles in copp

    Jan 1, 2018

  • IMPC
    Coal Flotation in Electrolyte Solutions

    By A. V. Nguye, P. A. Harvey

    Previous studies have reported that inorganic electrolytes can enhance floatability of coal. The research has shown that the enhancement, if any, is highly dependent on changes in solution pH, type of

    Jan 1, 2003

  • IMPC
    PROCESS flowsheet for udokan copper ores

    By Fedotov. K. V., A. Y. Senchenko, V. A. Chanturiya

    "The paper describes an efficient process to treat the ore from the largest in Russia copper deposit – Udokan. The recommended process is universally applicable to Udokan ores different in composition

    Jan 1, 2018

  • IMPC
    Analysis Of Autogenous And Semi-autogenous Grinding Test Data For Prediction Of Plant Performance

    By John A. Rumball, Martin R. Houchin

    Data from autogenous and semi-autogenous tests in a 1.67m diameter mill have been analysed in terms of a new model for rock abrasion. This model defines specific rate as the rate of production of fine

    Sep 29, 2003

  • IMPC
    A quantitative modeling for coprecipitation of arsenic with ferrihydrite in treatment of acid mine drainage

    By Shuji Owada, Shinya Suzuki, Chiharu Tokoro, Daisuke Haraguchi, Sayaka Izawa

    "Coprecipitation with ferrihydrite has been one of the major treatment method for As(V) removal from wastewater such as acid mine drainage. We already confirmed coprecipitation of As(V) with ferrihydr

    Jan 1, 2014

  • IMPC
    X-Ray Radiometric and Triboelectric Separation of Diamond-Bearing Materials

    By R. V. Kononko, A. Yu. Chikin, R. N. Rakhmeev, Yu. O. Fedorov

    "The focus of the study is finding a solution that can help to improve diamond recovery in diamond-bearing gravity concentrates upgrading flowsheets. The purpose of the study was to develop and prove

    Jan 1, 2018

  • IMPC
    Acid Decomposition of Silver Sulphide Mineral During Pressure Oxidation of Mixed Sulphides

    By Gus Van Weert, Samuel A. Bolorunduro, David B. Dreisinger

    "Silver is currently lost as jarosite during the pressure oxidation of sulphides and cyanidation of the residues yields 5-10% of silver. Efforts to recover silver from complex sulphides, which contain

    Jan 1, 2003

  • IMPC
    Pressure Oxidation as a Universal Method for Processing Sulphide Concentrates of Precious and Base Metals

    By Alexander V. Epiforov, Stanislav V. Balikov

    This paper describes of processing tests of 8 flotation concentrates containing precious and base metals by pressure oxidation (POX) method. Concentrates 1 and 2 were gold-copper concentrates. Zinc an

    Jan 1, 2018

  • IMPC
    A probability based model for the power draw of a tumbling mill

    By Lawrence Bbosa, Aubrey Mainza, Indresan Govender

    "Positron Emission Particle Tracking (PEPT) and the Discrete Element Method (DEM) are used to develop a probability based model for the power draw of a tumbling mill. Experiments are conducted using d

    Jan 1, 2014

  • IMPC
    A laboratory for engineers training in advanced flotation process control and supervision

    By Luis Bergh, Juan Yianatos, Luis Vinnett

    "Process automation as an engineering discipline is more than control systems since it includes industrial instrumentation, such as sensors, transmitters and actuators, as well as control and supervis

    Jan 1, 2014

  • IMPC
    Beneficiation of Super Fine Low-grade Hematite Ore by Coal-based Direct Reduction-magnetic Concentration Process

    With significant increase in steel output in the world the price of iron ores has been soaring recently. Especially, there is a strong demand for iron ores in China, leading to more attentions paid to

    Jan 1, 2014

  • IMPC
    Validation of a first principles flotation model

    By Gaurav Soni, Roe-Hoan Yoon

    A first principle flotation model has been derived from the basic mechanisms involved in flotation. The model consists of a series of analytical equations for bubble generation, bubble-particle collis

    Jan 1, 2014

  • IMPC
    Wet Magnetic Separation of Ti, Cr, Fe Compounds from Incinerated Bottom Ash by Controlling the Magnetic Susceptibility of the Medium

    By T. Fujita

    The incinerated bottom ash includes titanium oxides and a small amount of chromium oxides. Initially, 89 % of chromium was removed from ash at magnetic flux density at several stages of wet magnetic s

    Jan 1, 2014

  • IMPC
    Improving Coarse Particle Flotation

    Mineral flotation is effective over a relatively narrow particle size range of approximately 10 µm to 150 µm. If the upper particle size limit can be increased, however, a run-of-mine ore may be coars

    Jan 1, 2014

  • IMPC
    A new insight into oxidation mechanisms of sulphide minerals

    By Alireza Javadi Nooshabadi, Kota Hanumantha Rao

    Formation of hydrogen peroxide (H2O2), an oxidizing agent stronger than oxygen, by sulphide minerals during grinding was examined. It was found that pyrite (FeS2), chalcopyrite (CuFeS2), sphalerite ((

    Jan 1, 2014