Methods for processing copper-nickel raw materials in the Arctic

作者:
Goryachev A. , Makarov D.
作者单位:
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
摘要:
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 below-zero 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. At the 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.
语种:
EN,SR
DOI:
10.5937/JMMA2301025G
来源期刊:
Journal of Mining and Metallurgy. Section A: Mining
出版商:
University of Belgrade, Technical Faculty Bor
年,卷(期):
2023;59(1):25-33
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