Initial Metallurgical Test Work Recovers up to 91% Cu from the Haib Copper Project in Namibia

About this update from Koryx Copper S.a.

[{"type":"text","content":"Initial Metallurgical Test Work Recovers up to 91% Cu from the Haib Copper Project in Namibia(via TheNewswire)\n \n \nVancouver, B.C., Canada - TheNewswire - July 29, 2019 - Deep-South Resources Inc. (\"Deep- South\" or \"the Company\") (TSXV:DSM) announces first results from the metallurgical test work on stockpile material from the Haib Copper Project in Namibia. The test work program is managed by METS Engineering of Australia and undertaken by Mintek in South Africa. The program is on schedule and a summary of the planned program is presented at the end of this press release.\n\n \n \nBio-assisted leach test work results summary:\n\n \n \nTwo tons of samples are the object of various tests. The samples have been collected from a stockpile extracted from an adit dug in the higher grade area of the main Haib deposit. The samples have not been weathered and are considered representative of the sulphide mineralized material at Haib.\n\n \n \nThe Haib head assay revealed 0.73% Copper, 3.7% sulfur with minor elements and the balance 28.4% Silica. There are no deleterious elements. The mineralogy of the milled Haib feed revealed over 98.5% Chalcopyrite, 1% Bornite, and less than 0.5% of Chalcocite, Covellite, Malachite and Chrysocolla. \n\n \n \nThe acid consumption was measured across a number of tests. The net average acid consumption was between 10.3 and 11.6 kg/tonne which is an excellent low benchmark number. Acid is usually a major cost with leaching. However, the Haib mineralized material contains pyrite which generates acid during leaching and contributes to the lower consumption.\n\n \n \nHigh Pressure Grinding Roll (HPGR) optimisation tests demonstrated that the hard Haib mineralized material is amenable to HPGR. A 60 bar is deemed to be the ideal pressure as the particle size distribution was not reduced once the pressure exceeded this value. \n\n \n \nAgitated tanks bacterial leaching of P80 75 micron thick grounded mineralized material achieved between 91% copper recovery in one tank and 86% in the other tank in 46 days. The results demonstrate that high recoveries of copper can be achieved on the Haib mineralized material with bio-assisted leaching. (see agitated bacterial leaching tanks figures below)\n\n\n \n\nClick Image To View Full Size\n\n \n \nAssays of the residue will be taken at the end of the program and wi...

More updates from Koryx Copper S.a.