o:5975 Methods for processing copper-nickel raw materials in the Arctic Metode za preradu bakro-niklovih sirovina na Arktiku en Abstract: The different genesis of copper-nickel objects requires the use of different technologies for their enrichment. A scheme has been proposed for processing copper-nickel ore tailings, first by granulating the tailings with sulfuric acid, storing them at belowzero temperatures, and then followed by heap leaching of granules was proposed. The effect of different ratios of tailings to binder during granulation on the subsequent recovery of the metals was considered. At a ratio of S:L = 6:1, 44.4% nickel and 8.9% copper were recovered during the 40-day experiment. For ore processing, the efficiency of heap leaching with a 2% H2SO4 solution using technogenic ores from the Nud Terrasa was considered and Allarechensk deposits ores was studied, as no additional ore preparation was required. Atthe end of the experiment, 12.8% nickel and 10.2% copper were recovered from the Nud Terrasa ore, and 10.2% nickel and 4.4% copper were recovered from the ore of the Allarechensk technogenic deposit. The ore from the Nud II deposit and a rich sample of the Allarechensk ore were processed by low-temperature roasting with ammonium sulfate. From the ore of the Allarechensk technogenic deposit, 91.5% of nickel and 94.8% of copper were recovered. The results obtained may be of significant practical interest, especially in the Arctic zone. Izvod: Različita geneza bakro-niklovih sirovina zahteva upotrebu različitih tehnologija za njihovo obogaćivanje. Predložena je šema za preradu otpadne rude bakra i nikla tako što se sirovina prvo granulira sumpornom kiselinom, čuva na temperaturama ispod nule, a zatim se luži hemijski. Ispitivan je uticaj različitih odnosa jalovine i veziva tokom granulacije na naknadno dobijanje metala. U odnosu S:L = 6:1, 44,4% nikla i 8,9% bakra dobijeno je tokom 40-dnevnog eksperimenta. Za obogaćivanje rude proučavana je efikasnost hemijskog luženja sa 2% rastvorom H2SO4 korišćenjem tehnogenih ruda sa ležišta Nud Terrasa i Allarechensk, jer nije bilo potrebno dodatno obogaćivanje rude. Na kraju eksperimenta, 12,8% nikla i 10,2% bakra je dobijeno iz rude Nud Terrasa, a 10,2% nikla i 4,4% bakra je dobijeno iz rude tehnogenog ležišta Allarechensk. Ruda sa ležišta Nud II i bogat uzorak rude Allarechensk prerađeni su niskotemperaturnim pečenjem sa amonijum sulfatom. Iz rude tehnogenog ležišta Allarechensk dobijeno je 91,5% nikla i 94,8% bakra. Dobijeni rezultati mogu biti od značajne praktične koristi, posebno u arktičkoj zoni. Key words: low-temperature roasting; heap leaching; sulfuric acid granulation; copper; nickel; Arctic zone. Ključne reči: pečenje na niskoj temperaturi; hemijsko luženje; granulacija sumpornom kiselinom; bakar; nikl; arktička zona. 91552100 134709513 1552101 1450-5959 2024-11-02T22:26:15.299Z 44 no 46 Andreî Gorjačev Institute of North Industrial Ecology Problems – Separate subdivision of the Federal State Budgetary Institution of Science of the Federal Research Center «Kola Science Center», Apatity, Russian Federation 85561097 2023 63 ostalo Zoran Stevanović Institut za rudarstvo i metalurgiju Bor 9619303 0000-0001-5317-6884 2023 application/pdf 2050069 https://unilib.phaidrabg.rs/o:5975 no yes 21 70 622.7 92000003 71A03 Journal of Mining and Metallurgy. Section A, Minining : an International journal for theory and practice of Mining and Metalurgy 59A 25 33 2023