The Effect of Choke Feeding a Gyratory Crusher on Throughput and Product Size
J -F Dupont (1), J McMullen (1) and D Rose (2)
49th Annual Canadian Minerals Processors Conference, Ottawa, Canada, 2017
The Detour Lake mine is located 200 km northeast of Timmins, Ontario, Canada.
The mill processes a free milling gold ore using both a gravity circuit and leaching with a state-of-the-art carbon-in-pulp circuit. The grinding ciruict is a conventional SABC circuit with a tonnage of 55,000 tpd at 95 microns with the addition of pre-crushing upstream of the SAG mill.
The Detour Lake mine has one of the largest gyratory crusher in the world (60' x 113') and over the years, many improvements have been made to this crusher with the result of improving plant throughput. This paper will present how choke feeding the gyratory crusher has been found to be one of the main influences on crusher product particle size and plant throughput. It will explain how the effect of choke feeding the gyratory was measured and from that, the various changes made to improve choke feeding of the gyratory crusher.
(1) Detour Gold Corporation, Detour Lake Mine, 86 2nd Street, Cochrane, Canada, ON P0L1C0
(2) FLSmidth, Salt Lake City, UT 84047-5559 USA
Dupont J -F, McMullen J and Rose D. The Effect of Choke Feeding a Gyratory Crusher on Throughput and Product Size, in Muinonen J, Cameron R and Zinck J (Editors) 49th Annual Canadian Minerals Processors Conference Proceedings, pp 166-175, Ottawa, Canada, 2017, Office of the Secretary of the Canadian Mineral Processors, a Technical Society of The Canadian Institute of Mining, Metallurgy and Petroleum (CIM).
CEEC thanks the CIM and the Canadian Minerals Processors Society (CMP). Proceedings can be purchased from CMP's website for $10 here.