Determination of the optimal factors in dense medium cyclone for the achievement of the maximum grade and recovery in Lakan lead and zinc plant

Authors

1 M.Sc Graduated, Dept. of Mining Engineering, Tarbiat Modares University

2 Professor, Dept. of Mining Engineering, Tarbiat Modares University

3 Associate Professor, Dept. of Mining Engineering, Tarbiat Modares University

4 Assistant Professor, Dept. of Mining Engineering, Arak University of Technology

Abstract

Dense medium cyclone is one of the important devices especially in the pre-concentration stage for minerals such as lead and zinc. Many factors affect cyclone performance. This research was done at Lakan lead and zinc plant in Markazi province. The ore sample contains galena and sphalerite as the major minerals and large amounts of silica, calcite, dolomite as gangue minerals. In this research, initial sampling was done and followed by screening analysis and assaying of each size classes. In the experiments, two types of feed with different grade have been used. Considering plant parameters four series of experiments were performed using feed sample graded at 1.1 and 4.4% lead and zinc, respectively. To investigate the three other parameters of dense medium cyclone such a density, inlet pressure and cyclone angle, twelve tests were designed by DX7 software .These tests were done using feed sample graded at 0.5 and 3.1% lead and zinc, respectively. Finally, four parameters of particle size, density, inlet pressure and cyclone angle were optimized to (+1- 6.35 mm), 2 kg / m3, 0.5 bar and 23.87 °, respectively. By applying these optimal parameters the grade and recovery of lead were obtained as 0.71 and 76.38% and the grade and recovery of zinc were obtained as 4.40 and 75.98%, respectively.

Keywords

References

[1]     Magwai, M. K., and Bosman, J. (2008). “The effect of cyclone geometry and operating conditions on spigot capacity of dense medium cyclones”. International Journal of Mineral Processing, 86: 94-103.
[2]     نعمت اللهی، ح.؛ 1387؛ "کانه‌آرایی". انتشارات دانشگاه تهران، انتشارات دانشگاه تهران.
[3]     حاجتی، ع.؛ دهقانی، علی.؛ صامعی برزکی ج.؛ 1389؛ "پرعیارسازی اولیه خوراک مدار فلوتاسیون سرب و روی لکان به وسیله سیکلون واسطه سنگین". نشریه علمی-پژوهشی مهندسی معدن، دوره پنجم، شماره 9، ص 69-78.
[4]     Amini, S. H., Honaker, R., and Noble, A. (2016). “Performance evaluation of a dense-medium cyclone using alternative silica-based media”. Powder Technology, 297: 392-400, .
[5]     Sripriya, R., Banerjee, P., Rao, P., Dutta, A., and Rao,  M.  (2001). “Critical evaluation of factors affecting the operation of dense medium cyclones treating medium coking coals”. International journal of mineral processing,63: 191-206, .
[6]     Chen, J., Chu, K., Zou, R., Yu, A., Vince, A., and Barnett,  G. (2017). “Systematic study of the effect of particle density distribution on the flow and performance of a dense medium cyclone”. Powder Technology, 314: 510-523.
[7]     Chen, J., Chu, K., Zou, R., Yu, A., Vince, A., Barnett, G. (2016). “Systematic study of effect of particle size distribution in a dense medium cyclone by Johnson’s S B function”. Minerals Engineering, 91: 16-33.
[8]     Yuling, W., Yuemin, Z., and Jianguo, Y. (2011). “Density distribution in a heavy-medium cyclone”. Mining Science and Technology, 21: 175-179.
Journal of Mineral Resources Engineering
Volume 3, Issue 2
September 2018
Pages 99-110

Files

History

  • Receive Date: 22 September 2018
  • Accept Date: 22 September 2018

Share

How to cite

Statistics