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  • IMPC
    Effect of time step on the accuracy of DEM calculations

    By S. Banisi, Seyyed Omid Mousavi, Alireza Ghasemi

    Discrete Element Method (DEM) is extensively used to simulate the behaviour of particles in various processing units. This method is based on modelling the forces acting between particles in any conta

    Jan 1, 2014

  • IMPC
    Method for evaluation of upgrading by liberation and separation

    By Thomas Mütze, Petya Atanasova, Kai Bachmann, Urs A. Peuker, Thomas Leißner

    "A method is presented for the evaluation of mineral processing by liberation and upgrading. The method bases on the plot of recovery of valuables versus the recovery of gangue (Fuerstenau upgrading c

    Jan 1, 2014

  • IMPC
    Bioleaching of Chalcopyrite with Thermophiles: Temperature-pH-ORP Dependence

    By J. Vilcáez

    The copper extraction yield from thermophilic bioleaching of chalcopyrite depends on temperature, pH, and the oxidation-reduction potential (ORP), as well as the activity of the microbe used. We studi

    Jan 1, 2014

  • IMPC
    The effect of cell hydrodynamics on flotation kinetics

    By Erico Tabosa, Kym Runge, Peter Holtham

    "The distribution of turbulence in an industrial scale mechanical flotation cell and its effect on flotation kinetics was studied using a fully instrumented 3m³ cell. The cell was operated at a copper

    Jan 1, 2014

  • IMPC
    Theory and Practice of Dry Beneficiation Technology in China

    By Q. R. Chen

    Wet processes are commonly used in coal preparation field home and abroad. Dry coal cleaning technology is very necessary in China because more than 2/3 of coal resources deposited in arid areas, whic

    Jan 1, 2014

  • IMPC
    Evaluation of the Degree of Dispersion and Coagulation of Silica Nano-particles by Means of Interactive Force Apparatus

    By A. Otsuki

    This paper describes the evaluation method of dispersion and coagulation of silica nano-particles by means of interactive force apparatus. The apparatus measures the size of fine particles in aqueous

    Jan 1, 2014

  • IMPC
    Model For Reduction Of Iron Oxide Pellet With A C-O-H-N Gas Mixture Considering Water Gas Shift Equilibrium In The Gas While It Diffuses Through The Product Layer

    By Viswanathan N. Nurni

    In metallurgical processes, more and more usage of hydrocarbons is encouragedto bring down the carbon emissions. In this regard, numerous investigations onreduction of oxides by C-O-H-N gas mixture ha

    Sep 1, 2012

  • IMPC
    A comparison of open multiple-pass and closed circuit tests in a laboratory scale HPGR

    By Samira Rashidi, Robert Dunne, Raj Rajamani

    "High Pressure Grinding Rolls (HPGR) are known for more energy saving, better particle weakening and higher tonnage compared to semi-autogenous/ball mill circuits. These machines are scaled up based o

    Jan 1, 2014

  • IMPC
    Use of the Theory of Grinding Kinetics to Calculate Tower Mills Characteristics

    By S. Nitta

    The present study deals with a new approach in calculating the size of Tower Mills. The method is derived from the application of grinding kinetics theory on the analysis of by-gone operational data.

    Jan 1, 2014

  • IMPC
    Silver Recovery From Zinc-Lead-Iron Complex Sulphides by Pressure Oxidation

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

    "As deposits of high-grade base metal sulphides become depleted, attention must be focused on the treatment of complex sulphides, which contain significant fractions of precious metals such as gold an

    Jan 1, 2003

  • IMPC
    Effects of Picobubbles by Hydrodynamic Cavitation on Coarse Phosphate Froth Flotation

    By M. M. Fan

    In Florida?s phosphate industrial practice, the most favorable upper size limit of froth flotation is 1.18 mm which corresponds to particle weight of about 2.8 mg. Conventional froth flotation is not

    Jan 1, 2014

  • IMPC
    Flow Field Simulation of the Cyclonic Static Micro-bubble Column Flotation

    By X. H. Zhou

    Column flotation is being widely adopted for fine particle treatment by the mineral processing industry due to its simplicity of structure, high efficiency and good separation performance. Cyclonic st

    Jan 1, 2014

  • IMPC
    Investigating The Role Of Pulp Chemistry On The Floatability Of A Cu-Ni Sulfide Ore

    By K. C. Corin

    It is well known that the grinding circuit plays a crucial role in flotation. The effect of pulp chemistry during grinding is often overlooked. It is believed that the surface properties of the minera

    Sep 1, 2012

  • IMPC
    On Bubble-Particle Detachment Mechanisms in Coarse Particle Flotation

    By S. Mitra1

    "This study aims to investigate coarse particle detachment mechanisms (particle diameter > 150 ?m) utilising both experimental and numerical technique. Two mechanisms were studied – (i) interactions o

    Jan 1, 2018

  • IMPC
    REE bearing mineral recovery: A microflotation and surface chemistry study using hydroxamate collectors and citric acid

    By Brian Hart, Liuyin Xia, Staman Dimov

    The recovery of rare earth elements (REE) is fast becoming of significant interest globally. Modern research and development programs (outside China) towards the optimization of REE mineral recovery b

    Jan 1, 2014

  • IMPC
    Investigations on Mechanisms of Abrasive Particle Stress

    By Lutz Rolf, Halit Z. Kuyumcu, Salas Cazón. Milton A.

    Aim of experimental investigations was the mathematical description of the abrasion process running with a single particle stress. This is on the one hand the basis for the physical interpretation of

    Jan 1, 2003

  • IMPC
    Compressional Dewatering Of Flocculated Mineral Suspensions

    By Peter J. Scales

    The recovery of water for re-use in minerals processing is an important issue in the reduction of water use in mining, as is the dewatering of tailings to reduce the propensity of ?wet? tailings dams.

    Sep 1, 2012

  • IMPC
    A Study On Impeller And Stator Unit Of Flotation Cell For Coarse Particle

    By Shen Zhengchang

    Based on the flotation features of coarse particle mineral, a new type of impeller & stator unit is developed. Particles suspension state generated by this impeller & stator unit under different speed

    Sep 1, 2012

  • IMPC
    Interactions of Gum Depressants With Talc: Study of Adsorption by Spectroscopic and Allied Techniques (aa77a54c-5717-4f5a-be7a-06ed41804108)

    By P. Somasundaran, G. Anastassakis, Z. Pan, D. R. Nagaraj

    Gums are often used as depressants for talceous gangue minerals in the flotation of nickel and platinum bearing ores. However, the mechanisms of gum adsorption on talc are not clearly established. In

    Jan 1, 2003

  • IMPC
    Case Studies of Models of Tube Mill and Air Separator Grinding Circuits

    By A. J. Lynch, L. Ergun, M. Oner

    "A research program on modelling cement grinding circuits has been in operation at Hacettepe University, Ankara, for four years. It has concentrated so far on tube mill and air separator grinding circ

    Jan 1, 2003