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ArticleName | Comprehensive use of raw materials through optimization of the concentration and metallurgical complex of Norilsk division |
DOI | 10.17580/tsm.2022.02.01 |
ArticleAuthor | Datsiev M. S., Lesnikova L. S., Dzansolov I. V., Ananko I. A. |
ArticleAuthorData | MMC Norilsk Nickel’s Polar Division, Norilsk, Russia: M. S. Datsiev, Head of the Science and Technology Directorate, e-mail: DatsievMS@nornik.ru
Medvezhiy Ruchey LLC, Norilsk, Russia: |
Abstract | Using a concentration process introduced in 2016, Talnakh Concentrator produces copper and nickel-pyrrhotite concentrates by processing high-grade and cupriferous ores. Dump tailings comprise rock tailings separated at the early process stage and low-nickel pyrrhotite product obtained at the final concentration stage. The predominant mineral found in the ores processed by Talnakh Concentrator includes pyrrhotite, which in most cases contains nickel. Low-nickel pyrrhotite product contains pyrrhotite that bears maximum Ni 0.4% in the form of impurity. Another feature characterizing the pyrrhotites found in Norilsk is the presence of isomorphic inclusions of platinum group metals. Aimed at a more comprehensive use of raw materials, in 2018 Talnakh Concentrator introduced a process for repreparation of low-nickel pyrrhotite concentrate. A low-grade flotation concentrate is obtained with Ni 0.8÷1.2%, which is then sent to the hydrometallurgical circuit of Nadezhda Metallurgical Plant named after B.I. Kolesnikov (NMP). Being a sulphide, pyrrhotite enhances the autogenic performance of matte smelting process. The nickel concentrate produced by Norilsk Concentrator from disseminated and cupriferous ores is a low-energy material containing 15–17% of sulphur. So the heat generated during its oxidation flash smelting is insufficient to maintain the heat balance of the furnace. The nickel concentrate produced by Norilsk Concentrator is processed mixed with Ni-containing burden, which lowers the total heat balance of the flash smelting furnaces at NMP. In 2021, a process was introduced when a part of the tailings from the low-nickel pyrrhotite concentrate line of Talnakh Concentrator is used to recover high-pyrrhotite concentrate to be added to the nickel concentrate produced by Norilsk Concentrator in order to improve th e latter’s energy performance. |
keywords | Сoncentrator, low-nickel pyrrhotite, concentration process, recovery increase, flame pentlandite, copper-nickel ores, low-energy raw materials |
References | 1. Lesnikova L. S., Volyanskiy I. V., Datsiev M. S., Arabadzhi Ya. N. Implementation of the enrichment technology of the charge of rich and cuprous ore at the Talnakh Concentrator. Tsvetnye Metally. 2018. No. 6. pp. 32–37. DOI: 10.17580/tsm.2018.06.04. |
Language of full-text | russian |
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