The current state of ore-preparation circuits of concentrating plants treating porphyry copper ores has been analyzed. Energy-efficient ore-preparation flow sheets and equipment employed in the latest projects of large mining and processing operations by the world leading copper producing companies have been considered. The tendencies in ore-preparation circuits design have been revealed, characterized by two main competitive methods: ore semiautogenous grinding and press-roll crushing.

1. Economic Geology, 2005, Vol. 100, August.

2. Baranov V. F. Obogashchenie Rud, 2008, No 1, pp. 8–12.

3. Efendov N. T., Chervyakov S. A., Gruzdev A. V., Osadchiy A. M. Gornyi Zhurnal — Mining Journal, 2008, No 2.

4. CITIC Heavy Industries Co. Ltd. Mill Referens-list, 2009.

5. Brylyakov Yu. Ye., Gershenkop A. Sh., Lygach V. N. Gornyi Zhurnal — Mining Journal, 2009, No 9, pp. 32–37.

6. Ottergren C. Proc. 36^th Annual Meeting of the Canadian Mineral Processors, Ottawa, Ontario, Canada, January 20–22, 2004.

7. Morley C. Mining Magazine, 2003, September, pp. 118–127.

8. Mining Monthly, 2010, March, pp. 80–81.

9. Putland B. SAG. 2006, Department of Mining Engineering University of British Columbia. Vancouver, B. C., Canada.

10. Http://www.metsominerals.com.

11. Http://www. flsmidth.com.