A Study of the Feasibility of Using Ammonium Sulfate in Copper—Nickel Ore Processing
The possibility of applying a combined concentration and metallurgical method for processing low-grade and refractory copper–nickel ores was considered. The resulting rougher and scavenger flotation concentrate contained 2.07% nickel and 0.881% copper at a recovery of 85.44% and 89.91%, respectively...
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MDPI AG
2021-03-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/11/3/422 |
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| author | Andrey A. Goryachev Elena V. Chernousenko Sergey S. Potapov Nikita S. Tsvetov Dmitriy V. Makarov |
| author_facet | Andrey A. Goryachev Elena V. Chernousenko Sergey S. Potapov Nikita S. Tsvetov Dmitriy V. Makarov |
| author_sort | Andrey A. Goryachev |
| collection | DOAJ |
| description | The possibility of applying a combined concentration and metallurgical method for processing low-grade and refractory copper–nickel ores was considered. The resulting rougher and scavenger flotation concentrate contained 2.07% nickel and 0.881% copper at a recovery of 85.44% and 89.91%, respectively. The concentrate was then roasted with ammonium sulfate, followed by aqueous leaching of clinker to dissolve nickel and copper. The roasting temperature, the ratio of concentrate to (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> in the mixture, and the temperature were varied. Based on the study findings, the following process conditions were found to be optimal: roasting temperature 400 °C, rougher concentrate to ammonium sulfate ratio 1:7, and grinding size −40 μm. A roasting temperature of 400 °C is significantly lower than the temperature applied in conventional pyrometallurgical processes. The possibility of collecting off-gases allows the reagent to be regenerated and makes the process even more cost-effective. End-to-end recovery into pregnant solution was 81.42% for nickel and 82.81% for copper. The resulting solutions can be processed by known hydrometallurgical methods. |
| first_indexed | 2024-03-09T05:30:52Z |
| format | Article |
| id | doaj.art-fde141e5284846e197801ddb1d0e75c1 |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-09T05:30:52Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-fde141e5284846e197801ddb1d0e75c12023-12-03T12:33:32ZengMDPI AGMetals2075-47012021-03-0111342210.3390/met11030422A Study of the Feasibility of Using Ammonium Sulfate in Copper—Nickel Ore ProcessingAndrey A. Goryachev0Elena V. Chernousenko1Sergey S. Potapov2Nikita S. Tsvetov3Dmitriy V. Makarov4Kola Science Centre of the Russian Academy of Sciences, Institute of North Industrial Ecology Problems, Fersman St., 14a, 184209 Apatity, RussiaKola Science Centre of the Russian Academy of Sciences, Mining Institute, Fersman St., 26, 184209 Apatity, RussiaSouth Urals Federal Research Centre of Mineralogy and Geoecology UB RAS, 456317 Miass, RussiaKola Science Centre of the Russian Academy of Sciences, I.V. Tananaev Institute of Chemistry and Technology of Rare Elements and Mineral Raw Materials, Fersman St., 26a, 184209 Apatity, RussiaKola Science Centre of the Russian Academy of Sciences, Institute of North Industrial Ecology Problems, Fersman St., 14a, 184209 Apatity, RussiaThe possibility of applying a combined concentration and metallurgical method for processing low-grade and refractory copper–nickel ores was considered. The resulting rougher and scavenger flotation concentrate contained 2.07% nickel and 0.881% copper at a recovery of 85.44% and 89.91%, respectively. The concentrate was then roasted with ammonium sulfate, followed by aqueous leaching of clinker to dissolve nickel and copper. The roasting temperature, the ratio of concentrate to (NH<sub>4</sub>)<sub>2</sub>SO<sub>4</sub> in the mixture, and the temperature were varied. Based on the study findings, the following process conditions were found to be optimal: roasting temperature 400 °C, rougher concentrate to ammonium sulfate ratio 1:7, and grinding size −40 μm. A roasting temperature of 400 °C is significantly lower than the temperature applied in conventional pyrometallurgical processes. The possibility of collecting off-gases allows the reagent to be regenerated and makes the process even more cost-effective. End-to-end recovery into pregnant solution was 81.42% for nickel and 82.81% for copper. The resulting solutions can be processed by known hydrometallurgical methods.https://www.mdpi.com/2075-4701/11/3/422copper–nickel oreflotationrougher concentrateammonium sulfateroastingaqueous leaching |
| spellingShingle | Andrey A. Goryachev Elena V. Chernousenko Sergey S. Potapov Nikita S. Tsvetov Dmitriy V. Makarov A Study of the Feasibility of Using Ammonium Sulfate in Copper—Nickel Ore Processing Metals copper–nickel ore flotation rougher concentrate ammonium sulfate roasting aqueous leaching |
| title | A Study of the Feasibility of Using Ammonium Sulfate in Copper—Nickel Ore Processing |
| title_full | A Study of the Feasibility of Using Ammonium Sulfate in Copper—Nickel Ore Processing |
| title_fullStr | A Study of the Feasibility of Using Ammonium Sulfate in Copper—Nickel Ore Processing |
| title_full_unstemmed | A Study of the Feasibility of Using Ammonium Sulfate in Copper—Nickel Ore Processing |
| title_short | A Study of the Feasibility of Using Ammonium Sulfate in Copper—Nickel Ore Processing |
| title_sort | study of the feasibility of using ammonium sulfate in copper nickel ore processing |
| topic | copper–nickel ore flotation rougher concentrate ammonium sulfate roasting aqueous leaching |
| url | https://www.mdpi.com/2075-4701/11/3/422 |
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