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Yorbeau Resources Reports Concentrate Grades and Recoveries From Metallurgical Testing At Scott Project
MONTREAL, QUEBEC--(Marketwired - Aug. 29, 2017) - Yorbeau Resources Inc. (TSX:YRB) (the "Company" or "Yorbeau") is pleased to report results from metallurgical
About this update from Yorbeau Resources, Inc. Class A
[{"type":"text","content":"MONTREAL, QUEBEC--(Marketwired - Aug. 29, 2017) - Yorbeau Resources Inc. (TSX:YRB) (the \"Company\" or \"Yorbeau\") is pleased to report results from metallurgical tests at its Scott project in Quebec. A composite sample weighing 55 kilograms was prepared from drill core selected from several representative drill holes from all mineralized zones forming the Mineral Resources except the Selco lens. The composite sample is considered to be representative of the Mineral Resources and contained approximately the same ratio of massive sulphides and stringer sulphides as shown in the Mineral Resources (re: press release of March 30, 2017). A series of metallurgical tests were completed by Chibougamau-based Services Métallurgiques Metchib, in cooperation with SGS Canada Inc. in Québec city. The work done includes a mineralogical characterization (QEMSCAN), a Davis Tube magnetic test, an oxidation and activation test, 11 batch flotation tests, and a \"locked cycle\" flotation test. The batch flotation tests were done to determine the response of the mineralization to various grinds and flotation parameters, and to determine the process and flowsheet to be used for the locked cycle test. The locked cycle test was designed to replicate at bench scale, as much as possible, the physical and chemical conditions that would ultimately be used at industrial scale in a concentrator. Based on the QEMSCAN analysis and the preliminary tests, a primary grind of 55 microns was selected for the tests. A total of six cycles were completed in the locked cycle test. The concentrates obtained in cycles B and C are considered representative of the final copper concentrate, while the concentrate obtained in cycle F is considered the closest representative of the final zinc concentrate (see details below). The highlights of the tests are presented below. Copper concentrate In the chalcopyrite batch flotation tests various copper concentrate grades were obtained, ranging from 19% Cu to 33% Cu, and a good copper concentration potential with low zinc content was shown. During the locked cycle test, the highest copper grade achieved in a given cycle was 27.2% Cu. The locked cycle test (cycles B-C) showed an overall 82% copper recovery in a 23.3% Cu concentrate. Copper concentrate grade for cycle B: % Cu % Zn g/t Au g/t Ag Fe% 25.4 6.5 8.5 612 27.5 Although ...