Our next dinner meeting is planned at the end of the International Mine Expo in Las Vegas. Our meeting is planned for Wed, September 28th, 2016. "A Comparison Between the Automated Filter Press (AFP) and Counter Current Decantation (CCD) for Solution Recovery from Acid Leach Tailings” PRESENTER: Kent J. McGrew, P.E., Tons Per Hour, Inc.
PLEASE RSVP to Marianne - MSPRINGER@CAROLLO.COM
Abstract: Comparisons of capital and operating costs are made between two copper leaching operations: Minera Rio Tinto, a copper mine in northern Mexico using Automated Filter Press (AFP), and CS Mining, a copper leach operation in Utah using Counter Current Decantation (CCD). Our study indicates there are significant capital cost savings with the AFP installation: Cost for stainless steel tanks alone in the CCD circuit add 38% more cost compared to the AFP installation; total capital cost is 2.3 times greater for the CCD; and operating expense for the CCD circuit is approximately $2.00 per ton of ore greater due to the additional required flocculent.