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Bayhorse Silver Achieves Near Total Silver Recovery With Two Stage Leaching, Bayhorse Silver Mine, Oregon, USA
Vancouver, British Columbia--(Newsfile Corp. - June 6, 2018) - Bayhorse Silver Inc. (TSXV: BHS...
About this update from Bayhorse Silver Inc.
[{"type":"text","content":"Bayhorse Silver Achieves Near Total Silver Recovery With Two Stage Leaching, Bayhorse Silver Mine, Oregon, USAVancouver, British Columbia--(Newsfile Corp. - June 6, 2018) - Bayhorse Silver Inc. (TSXV: BHS) (the \"Company\" or \"Bayhorse\") has achieved near total silver recovery (NTSR) from the recent two stage leaching test program conducted for the Company by Richard Hammen, Ph.D. Chemistry, on its Bayhorse Silver Mine, Oregon, USA. The Company is in the process of establishing the effectiveness of the processing method at commercial levels of production.Dr. Hammen has taken his research success in chemical separations, begun while he was Director of Chemistry at Jet Propulsion Labs (JPL) of Pasadena, CA, and applied it to mineral processing streams to improve recovery of metals over what is currently in practice in the mining industry.In the leaching test (hydrometallurgical process) on 25 kg of Bayhorse Silver Mine mineralized material grading 25.6 oz/ton (796 g/ton) silver, Dr. Hammen achieved essentially total recovery of the silver as shown in the table below. Using ion exchange purification and reduction, the resultant silver can be formed into pure silver bars.Summary of 2 Stage Silver leach resultsppm Ag Head Assaygrams Ag/ton of ore 796 Tails after leaching grams Ag/ton of ore <2 Ag in leach solutionsgrams Ag/ton of ore 792The ProcessThe combined use of both electrophilic and nucleophilic classes of chemicals that has been developed for leaching the silver bearing material at the Bayhorse Silver Mine lifts the yield of silver that can be extracted from the 60% range to the 99+% level. If the process is effective at commercial levels of production, it may affect the potential economics of the Company's silver mine. The chart supports solution analyses by mass balance of silver in both the mineralization and the tailings. Since the lower limit of detection (LDL) for the ICP instrument used to measure the silver in the tailings was 2 ppm then the silver \"measurement\" was less than 2 ppm (<2 ppm). Using the 2 ppm LDL number, the extraction of the silver from the mineralization by these orthogonal leaches is virtually complete.Dr Hammen states, \"The quantity of reagents used will be refined in further test work leaching of a one ton sample of Bayhorse \"ore-sorted\" mineralized material, followed by silver purific...