tag:blogger.com,1999:blog-6908362959739425575.post2842174875189441754..comments2024-03-26T21:47:45.016+00:00Comments on MEI's Barry Wills: Memories of Nchanga's High-Grade Leach PlantMEIhttp://www.blogger.com/profile/14834780351452765156noreply@blogger.comBlogger10125tag:blogger.com,1999:blog-6908362959739425575.post-535534517021671182020-06-18T09:29:09.332+01:002020-06-18T09:29:09.332+01:00Is it? In what way?Is it? In what way?MEIhttps://www.blogger.com/profile/14834780351452765156noreply@blogger.comtag:blogger.com,1999:blog-6908362959739425575.post-34814405806078117002020-06-18T09:28:32.165+01:002020-06-18T09:28:32.165+01:00It is a great plant and I learnt a lot, too bad it...It is a great plant and I learnt a lot, too bad it's deteriorating.<br />UlemuAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6908362959739425575.post-64614475382634839802020-06-17T18:06:57.676+01:002020-06-17T18:06:57.676+01:00Well before your time, UlemuWell before your time, UlemuMEIhttps://www.blogger.com/profile/14834780351452765156noreply@blogger.comtag:blogger.com,1999:blog-6908362959739425575.post-70021138409636888242020-06-17T18:06:27.662+01:002020-06-17T18:06:27.662+01:00Never knew you once worked at Nchanga Tailings Lea...Never knew you once worked at Nchanga Tailings Leach Plant<br />Ulemu Chirwa, First Quantum Minerals, ZambiaAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-6908362959739425575.post-79567861759066513482020-06-15T09:32:32.089+01:002020-06-15T09:32:32.089+01:00Yes, wonderful days indeed Rod. I remember all tho...Yes, wonderful days indeed Rod. I remember all those names bar one- Filip Ser- must have missed him. In my first few weeks at Nchanga, on the concentrator, the acting plant metallurgist was our late and dear friend Roger Thomas. Paul Piercy was assistant superintendent and Jack Mac I think was metallurgical superintendent.MEIhttps://www.blogger.com/profile/14834780351452765156noreply@blogger.comtag:blogger.com,1999:blog-6908362959739425575.post-33812397960732628932020-06-15T09:16:33.894+01:002020-06-15T09:16:33.894+01:00Days fondly remembered Barry. At the time you were...Days fondly remembered Barry. At the time you were at Nchanga I was based at the R & D Pilot Plant facility in Kitwe but spent much time on Nchanga projects. <br />At the Concentrator I spent many happy days (Test Bank 614!)working with the bundle of energy that was Dr Filip Ser testing a new approach to floating oxide copper minerals using a selective sulphydric collector rather than the non-selective fatty acid Palm Kernal Oil collector used historically. I fondly remember characters like Jack Macdonald, Paul Piercy, Roger Kelley, Clifford Eales and others from those days.<br />Then for quite a while I worked on shift on the small SX/EW Pilot Plant in Kitwe testing different feed materials and reagents (Lix and Kelex) for use in the Stage 2 Tailings Leach Plant. This brought me into contact with people like Dave Deuchar, Dave Parker, Les Stewart, Paul Smithson and other veterans of that era.<br />Great days and thinking back on it, what an incredible way to start a career as a metallurgist!Rodney Whytenoreply@blogger.comtag:blogger.com,1999:blog-6908362959739425575.post-76160393898291924752020-06-15T09:15:41.484+01:002020-06-15T09:15:41.484+01:00The ore grade at Nchanga in the 1970s was around 3...The ore grade at Nchanga in the 1970s was around 3% Cu, and the mine produced only copper (it now also produces cobalt, I believe), which is unusual for a copper mine, which would commonly produce by-products such as lead, zinc, molybdenum and gold.MEIhttps://www.blogger.com/profile/14834780351452765156noreply@blogger.comtag:blogger.com,1999:blog-6908362959739425575.post-74486635745569628992020-06-15T08:57:45.423+01:002020-06-15T08:57:45.423+01:00Well spotted James. Yes, the photo was on the 6th ...Well spotted James. Yes, the photo was on the 6th and 7th editionsMEIhttps://www.blogger.com/profile/14834780351452765156noreply@blogger.comtag:blogger.com,1999:blog-6908362959739425575.post-35431956974013638782020-06-15T03:54:47.486+01:002020-06-15T03:54:47.486+01:00It is indeed tricky; in India also we get oxide or...It is indeed tricky; in India also we get oxide ore veins while the plant is designed for sulphides; good challenge for innovation.<br />Didn't you have any values along with copper such as moly/gold?<br />Lack of proper and accurate mineralogical/geochemical information at the exploration /borewell analyses leads to many issues if the plant is designed with limited information--- continuous characterisation even while the plant is operating gives so much information to minimise loss of values in regular operations.Rao,T.C.https://www.blogger.com/profile/11160713677908165404noreply@blogger.comtag:blogger.com,1999:blog-6908362959739425575.post-11981122417055608352020-06-15T00:08:35.069+01:002020-06-15T00:08:35.069+01:00So THAT'S where the cover image from mineral p...So THAT'S where the cover image from mineral processing technology came from...<br /><br /><br />James Spangenberg, UCTAnonymousnoreply@blogger.com