![]() ![]() Mincore carried out the refurbishment of the Kainantu Processing Plant prior to the restart of operations and also completed the metallurgical component as reported in the “Independent Technical Report, Mineral Resource Update and Preliminary Economic Assessment of Irumafimpa and Kora Gold Deposits, Kainantu Project, Papua New Guinea," with an effective date of March 2, 2017. Importantly the gravity circuit being installed will be sized to be able to treat the increase in throughput envisaged in the Preliminary Economic Assessment (“PEA”) referenced below, of 400,000 tpa. While currently gold recoveries of over 92% are being achieved, testwork has indicated that the installation of a gravity circuit will allow design throughput to be maintained while also achieving up to 95% recovery. The feed grade to the plant has averaged almost 20 g/t Au during February, requiring the throughput of the plant to be significantly reduced to ensure acceptable recoveries are achieved. The ongoing high grades being treated through the process plant make the installation of the gravity circuit a priority. The cost of the gravity circuit is expected to be US$1 million and the installation of the gravity circuit is expected to improve gold recovery by between 2% and 5% and also increase the payment terms for the gold produced in dore form by approximately 3% to 4% giving a net increase in gold revenue of at least 4%. The gravity circuit will comprise centrifugal concentrators and a gold room containing a shaking table and induction furnace for the production of gold dore bars. These results are supported by ongoing plant scale testwork carried out by K92 on Kora North material currently being treated through the process plant. Previous testwork carried out on samples from the Kora deposit indicated that up to 65% of the gold could be recovered by gravity concentration. ![]() (“K92”) (TSXV:KNT) is pleased to advise it has awarded the contract from the installation of a gold gravity recovery circuit into the Process Plant at its Kainantu Gold Mine in Papua New Guinea to Mincore Pty Ltd (“Mincore”). 20, 2018 (GLOBE NEWSWIRE) - K92 Mining Inc. Deveci, Application of Falcon centrifugal concentrator for recovery of gold from Mastra ore, XIth Balkan Mineral Processing Congress, Mineral Processing in Sustainable Development, Durres, Albania, 2005, p.314.VANCOUVER, British Columbia, Feb. Dunne, Optimization of gold recovery by selective gold flotation for copper-gold-pyrite ores, Miner. Kelebek, Flotation kinetics of a pyritic gold ore, Int. Liu, Bulk flotation of auriferous pyrite and arsenopyrite by using tertiary dodecyl mercaptan as collector in weak alkaline pulp, Miner. Yan and Hariyasa, Selective flotation of pyrite and gold tellurides, Miner. Yarar, Natural hydrophobicity of native gold flakes and their flotation under different conditions, Processing of Complex Ore, G.S. Trahar, The natural flotability of chalcopyrite, Int. ![]() ![]() McLeavy, A hybrid flotation-gravity circuit for improved metal recovery, Int. Müller, Dichtesortierung von primären golderzen als alternative zur laugung, Sortieren Innovationen und Anwendungen, Vortraege zum 2, Kolloquium Sortieren, Berlin, 2001, p.169.ī. Chevalier, Recovery of Gold Using Gravity Concentration the Hemlo Experience, 2004. Escobar, Recovery of Placer Gold Using the Knelson Concentrator, 2004. Martin, et al., Modern gold deportments and its application to industry, Miner. Laplante, Report on the Characterization of Gravity Recoverable Gold in a Sample of Kemess #1 Ore, McGill University, Montreal, 2001. ![]()
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