Preferences help
enabled [disable] Abstract
Number of results
2015 | 128 | 2B | B-352-B-354
Article title

Determining the Optimum Heap Height Considering the Irrigation Rate and the Slope of Heap Bed Variations in Miduk Copper Mine

Title variants
Languages of publication
Determining an optimum height is remarked as one of the most important issues in heap designing and this is obtained by calculating the number and the height of heap lifts. Although the increase of lift height has benefits in heap leaching method from economic point of view, it will reduce the stability and make process problems such as low permeability. The current paper analyzes the effect of sulphuric acid irrigation on the strength parameters of Miduk oxide copper ores. In addition, the result of the process experiments have evaluated with different irrigation rates as well as variable conditions of permeability. From process view, approximately 75% of copper is recovered at irrigation rate of 8 l/h m². Due to the significance of economic and process parameters in determining the optimum height of lifts, these parameters are simultaneously studied. The results are demonstrated that although the increase of irrigation rate and permeability can lead to more copper recovery in this mine, it will remarkably decrease the stable height of lifts. Moreover, changes in the bed slope will have a similar effect on the height of the lifts.
Physical description
  • [1] G.A. Padilla, L.A. Cisterns, J.Y. Cueto On the Optimization of Heap Leaching, Technical note, Antofagasta 2008
  • [2] M. Rahmani, A. Khodadadi, in: Iranian mining engineering conference, Tarbiat Modarres University, Tehran 2004
  • [3] A. Majdi, M. Amini Chermahini, Stability Analysis of Structures Leaching Mass Fractionation Method (new method), College of Engineering, Volume 40, Issue 1, 2006, p. 55
  • [4] H. Rahardjo, D.G. Fredlund, General Limit Equilibrium Method for Lateral Force, University of Saskatchewan, Saskatoon 1983
  • [5] E. Spencer, Geotechnique 17, 11 (1967), doi: 10.1680/geot.1967.17.1.11
  • [6] N.R. Morgenstern, V.E. Price, Geotechnique 15, 79 (1965), doi: 10.1680/geot.1965.15.1.79
  • [7] J. Lowe III., L. Karafith, Proc. First Pan-American conference on Soil Mechanics and Foundation, Vol. 2, Mexico City 1960, p. 537
  • [8] A.W. Bishop, Geotechnique 5, 7 (1955), doi: 10.1680/geot.1955.5.1.7
  • [9] N. Janbu, Proc. of the European Conference on Stability of Earth Slopes, Vol. 3, Stockholm 1954, p. 43
  • [10] A.J. Breitenbach, GFR Magazine 22, 1 (2004)
  • [11] H.M. Lizama, J.R. Harlamovs, D.J. McKay, Z. Dai, Miner. Eng. 18, 623 (2005), doi: 10.1016/j.mineng.2004.12.012
  • [12] W.J. Pennstrom, J.R. Arnold, Miner. Metall. Proc. 16, 12 (1999)
Document Type
Publication order reference
YADDA identifier
JavaScript is turned off in your web browser. Turn it on to take full advantage of this site, then refresh the page.