Beneficiation of oxide ores using dense medium cyclones. A simulation study

• Autorzy: Aghlmandi Harzanagh A. , Ergun S. L. , Gulcan E.

Identyfikatory

DOI

10.5277/ppmp170130

• Języki publikacji: EN

Abstrakty

EN

Recent investigations of particle behavior and segregation phenomena in a cyclone underline that little is known about particle distribution within a heavy medium separation. For this purpose, density profiles in a heavy medium cyclone (HMC) is measured with techniques such as computational fluid dynamics (CFD) in combination with discrete element modelling (DEM), electrical resistance tomography (ERT), X-ray tomography, particle dynamics analyzer (PDA) etc. Along with these modern efforts of determining the performance of HMC, traditional methods depending on empirical inferences based on experimental data are still important and in progress. The aim of this research was to investigate the possibility of using HMC for the concentration of problematic ores which are not coarsely aggregated. Towards this purpose, current empirical methods were applied to experimental data which were derived from float-sink tests of selected heavy minerals and Fe, Mn, and Cr ore samples. Low density difference between particles made the enrichment difficult using other gravity methods like jigs and shaking tables. After determining physical and mineralogical properties of the samples, appropriate size fractions were prepared for float-sink tests. Combination of sodium polytungstate and tungsten carbide powder were used to prepare non-toxic heavy liquids with density up to 3.5 g/cm3. Using the sink-float test results and existing empirical models for high-density DMC plants simulations were performed. The results of the simulations followed by experimental studies showed that HMCs are applicable to process Fe, Mn, and Cr ores with acceptable grade and recovery.

Słowa kluczowe

EN

heavy medium cyclone; heavy liquid; simulation; iron ores; manganese; chromite

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Physicochemical Problems of Mineral Processing
• Rocznik: 2017
• Tom: Vol. 53, iss. 1
• Strony: 379--393
• Opis fizyczny: Bibliogr. 28 poz., rys., tab.

Twórcy

autor

Aghlmandi Harzanagh A.

• Hacettepe University, Department of Mining Engineering, 06800, Beytepe, Ankara, Turkey

autor

Ergun S. L.

• Hacettepe University, Department of Mining Engineering, 06800, Beytepe, Ankara, Turkey

autor

Gulcan E.

• Hacettepe University, Department of Mining Engineering, 06800, Beytepe, Ankara, Turkey

Bibliografia

• AGHLMANDI HARZANAGH A., 2014, Simulation-aided investigations on non-coal applications of heavy medium cyclone, M.S. Thesis, Department of Mining Engineering, Hacettepe University, Ankara, Turkey.
• AZADI M., AZADI M., MOHEBBI A., 2010, A CFD study of the effect of cyclone size on its performance parameters, Journal of Hazardous Materials, 182(1-3), 835–841.
• BEVILACQUA P., ZANIN M., 2002, A simulation procedure for the design of dense medium separation circuits, Eighth Samancor Symposium on Dense Media (pp. 1–13), Port Douglas, Australia.
• BOSMAN J., 2006, Dense medium cyclones – Sizing and selection, Ninth Samancor Symposium on Dense Medium Separation.
• BURT R.O., 1984, Gravity Concentration Technology, Amsterdam-Oxford-New York-Tokyo: Elsevier.
• DARDISL K.A., MACK J., 1987, The design and commissioning of the Argyle diamond mines heavy medium, AuslMM Southern Queensland Branch, Dense Medium Operators’ Conference (pp. 17–31).
• DE KORTE J., (N.D.), 2014, Index of South African Coal Preparation Plants, retrieved February 25, 2014, from http://www.sacoalprep.co.za/information.htm.
• ELSAYED K., LACOR C., 2013, CFD modeling and multi-objective optimization of cyclone geometry using desirability function, artificial neural networks and genetic algorithms, Applied Mathematical Modelling, 37, 8, 5680–5704.
• FRANCIS R.S., 2009, Coobina chromite fines plant designed on a shoestring, Built in a boom and commissioned in a bust, Tenth Mill Operators’ Conference.
• KEPA A., 2013, The efficiency improvement of a large-diameter cyclone, CFD Calculations, Separation and Purification Technology, 118, 105–111.
• KOROZNIKOVA L., KLUTKE C., KNIGHT S.M.C., HALL S., 2007, The use of low-toxic heavy suspensions in mineral sands evaluation and zircon fractionation, 6th International Heavy Minerals Conference “Back to Basics,” The Southern African Institute of Mining and Metallurgy, 21–30.
• KRIGE J., 1987, Heavy medium separation at Iscor’s Sishen, AuslMM Southern Queensland Branch, Dense Medium Operators’ Conference (pp. 65–73).
• MASON T.F., MCSPADDEN G., 2002, Performance enhancement at BHP Billiton’s Newman Beneficiation Plant, Metallurgical Plant Design and Operating Strategies.
• MCNIEL M., 1982, Panasqueira - The largest mine in Portugal, World Mining, 52–55.
• MUNNIK E.J., 1994, An overview of the South African andalusite industry with specific reference to the dense medium separation techniques used, 5th Samancor Symposium on DM Separation.
• NARASIMHA M., BRENNAN M., HOLTHAM P.N., 2007, Prediction of magnetite segregation in dense medium cyclone using computational fluid dynamics technique, International Journal of Mineral Processing, 82,1, 41–56.
• ORHAN E.C., GULSOY O., ERGUN L., 2010, Coal Washing Plant Simulator, Hacettepe University, Department of Mining Engineering, Ankara, Turkey.
• REEVES R., 2002, Types and characteristics of heavy-media separators and flowsheets, in: Mular A., Halbe D., Barrat D. (Eds.), Mineral Processing Plant Design, Practice, and Control Proceedings, New York, 962–977.
• RONG R.X., LYMAN G.J., 1985, Computational techniques for coal washery optimization - Parallel gravity and flotation separation, Coal Prepn., 2, 1, 51–69.
• RYLATT M.G., POPPLEWELL G.M., 1999, Diamond processing at Ekati in Canada, Mining engineering, v.51, no.2, pp.19
• SASSOS M.P., 1984, Manganese: Gemco mines huge resources at Groote Eylandt, Eng. & Min. J., 57–58.
• SCOTT I.A., 1985, Particle size effect in ore preconcentration using dense medium cyclones, M.S. Thesis, The University of Queensland, Australia.
• SCOTT I.A., 1988, A dense medium cyclone model based on the pivot phenomenon, Ph.D. Thesis, The University of Queensland, Australia.
• SCOTT I.A., NAPIER-MUNN, T.J., TIMOTHY J., 1990, A dense medium cyclone model for simulation, 4th Samancor Symposium on Dense Media Separation: Dense Media 90 Australia, Cairns, Australia.
• WAANDERS F.B., RABATHO J.P., 2004, Recovery of heavy minerals by means of ferrosilicon dense medium separation and material, 9th Latin American Conference on the Application of the Mossbanner Effect.
• WALTER E., MCCULLOCH J., BHAPPU R.B., HIGHTOWER J.D., 1999, Copper ore precon-centration by heavy media separation for reduced capital and operating costs, Proceedings of Copper 99-Cobre 99 International Environment Conference, Volume II, Mineral Processing/Environment, Health, and Safety.
• WHITEN W.J., 1966, Winter School on Mineral Processing, Course Notes, Department of Mining and Metallurgical Engineering, The University of Queensland, Australia.
• WILLS B.A., NAPIER-MUNN T.J., 2006, Mineral Processing Technology, Elsevier Science & Technology Books.