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Commerce Resources Corp. Achieves Key Milestones for the Ashram Rare Earth Project05.10.2015 | 9:30 Uhr | CNW
VANCOUVER, Oct. 5, 2015 /CNW/ - Commerce Resources Corp. (TSXv: CCE, FSE: D7H, OTCQX: CMRZF) (the "Company" or "Commerce") is pleased to announce the achievement of key metallurgical milestones with the successful completion of a leach mini-pilot plant1 and the subsequent production of the highest-grade mineral concentrate to date from the Company's 100% owned Ashram Rare Earth Deposit. The work was completed as part of the 2nd Phase of the pilot plant, designed to leach bulk flotation concentrate produced during the first phase of the pilot plant. Both continuous and batch leach pilots have now been completed, as well as bench scale testing of the piloted material through to a final mineral concentrate to demonstrate the robustness of the entire process. Highlights include:
Company President Chris Grove states, "We are highly encouraged by these results from the 2nd Phase of the pilot plant program. The production of these high-grade mineral concentrates using piloted material as feed is a significant milestone, with the ongoing program continuing to demonstrate that the flowsheet for the Ashram Deposit is simple, robust, and scalable using standard commercial methods." The main objective of the continuous pilot is to demonstrate the leach process (using HCl) on a continuous and scaled up basis (<4 kg to >150 kg) to evaluate material handling and performance in a manner similar to a commercial operation. The objective of the batch leach pilot is to demonstrate additional scale up (<4 kg to >300 kg) and to produce larger quantities of leach residue at the defined parameters. The continuous leach pilot was comprised of a series of eight glass cascading vessels that was fed flotation concentrate continuously (154 kg total) for a period of 145 hours, producing 47 kg of primary leach residue. The batch leach pilot was comprised of one large vat that was fed flotation concentrate in one single dose (i.e. batch) of 307 kg, producing 100 kg of primary leach residue. A secondary leach was completed on the batch pilot residue with the combined overall REE recovery exceeding 99%2, as targeted. In order to fully evaluate the quality of the residues produced from the leach pilot plant, several samples were bench processed through the Wet High Intensity Magnetic Separation (WHIMS) stage to produce a final mineral concentrate to use for downstream hydrometallurgical processing. This testwork produced the best mineral concentrate to date for the Ashram Deposit, with potential for additional improvement remaining (Table 1). Table 1. High-grade mineral concentrate produced from leach pilot residue (Test 3889-13)
The pilot plant results to date (flotation and leach) are encouraging and indicate that the Ashram flowsheet is robust at larger scales and is able to produce rare earth mineral concentrate of >45% TREO at high overall recovery. This compares favorably to major hard-rock producers globally. The 2nd phase of the pilot plant is ongoing, with the opportunity to further optimize as additional flotation concentrate remains to be processed. This pilot plant is part of a larger program to confirm the scalability of the overall flowsheet and produce several kilograms of mixed rare earth carbonate concentrate (REC), and mixed rare earth chloride concentrate (RECl).
NI 43-101 Disclosure Eric Larochelle, Eng., and Alain Dorval, Eng., Manager-Process, Mining and Mineral Processing, of Roche Ltd., Consulting Group, Qualified Persons as defined by National Instrument 43-101, reviewed the technical information presented in this news release. About the Ashram Rare Earth Element Deposit The REEs at Ashram occur primarily in the mineral monazite and to a lesser extent in bastnaesite and xenotime. These minerals dominate the currently known commercial extraction processes for rare earths. The Ashram Deposit mineralization has an REE distribution with enrichment in the critical and magnet feed REEs (Nd, Pr, Eu, Tb, Dy, and Y). A Preliminary Economic Assessment (PEA) was completed in May of 2012 by SGS-Geostat of Montreal (Blainville) (see news release May 24, 2012). The PEA is based on a 4,000 tonne per day open-pit operation with an initial 25-year mine life, a pre-tax Net Present Value (NPV) of $2.32 billion at a 10% discount rate, a pre-tax/pre-finance Internal Rate of Return (IRR) of 44%, and a pre-tax/pre-finance payback period of 2.25 years. The PEA (revised date January 7, 2015) is preliminary in nature, and includes inferred mineral resources that are considered too speculative geologically to have the economic considerations applied to them that would enable them to be categorized as mineral reserves, and there is no certainty that the PEA will be realized. Mineral resources are not mineral reserves as they do not have demonstrated economic viability. The current Ashram Technical Report dated January 7, 2015 explains why no after-tax case is included, and that a combined tax rate of around 32.5% may apply to production. With respect to the ongoing Pre-feasibility Study (PFS), the results of the programs described in this news release will be incorporated, along with other necessary technical data including geological and engineering studies, into the PFS with costs and benefits to be described in more detail therein. About Commerce Resources Corp. For more information please visit the corporate website at http://www.commerceresources.com or contact Investor Relations at 604.484.2700 or info@commerceresources.com. On Behalf of the Board of Directors "Chris Grove" Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this release. Forward-Looking Statements SOURCE Commerce Resources Corp. Contact please visit the corporate website at http://www.commerceresources.com or contact Investor Relations at 604.484.2700 or info@commerceresources.com. Dieser Artikel stammt von Rohstoff-Welt.de
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