![]() The anticipated payback for the US$1 million investment, based on an improved gold recovery and payability, is less than one year. John Lewins, K92 Chief Executive Officer and Director, states, “The award of the contract for the installation of the gravity circuit is not only a major step in optimizing the performance of the process plant when treating Kora North material, but also the first step in increasing the plant capacity from 200,000 tpa to 400,000 tpa. GRAVITY CIRCUIT GOLD MINING UPDATEMincore 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. As technology improved and provincial and federal governments started monitoring the environmental impact of mining, many of the area's mills introduced autoclaves.VANCOUVER, British Columbia, Feb. Campbell Red Lake Mines used roasters to breakdown their arsenopyrite-rich ore, while other mines in the district lacking this geological feature used different technology. For example, some mills used a ball mill, while others used a pebble mill. Each mine customizes the mill equipment according to what will work best with the geology of their deposit. ![]() While the main steps for extracting gold are the same, but the equipment used can vary from mine to mine. ![]() Today, most gold mining mills use a combination of gravity circuits and concentration leaching to separate gold from the ore. These processes are more efficient and require less regulation for worker safety. Historically, mines would use amalgamation (with mercury), but technological advances have now replaced this process. Extracting gold can be done through amalgamation, gravity concentration or leaching. The mineral extraction process varies depending on the mineral. ![]()
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