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Sulfuric Acid Granulation of Copper—Nickel Ore Tailings: Leaching of Copper and Nickel in the Presence of Sulfide Oxidation Activators
| Content Provider | MDPI |
|---|---|
| Author | Goryachev, Andrey Svetlov, Anton Kompanchenko, Alena Makarov, Dmitriy |
| Copyright Year | 2022 |
| Description | A laboratory scale study was conducted, aimed at finding an effective method for processing fine concentration tailings of copper-nickel ores. A sulfuric acid tailing granulation process followed by subsequent heap leaching of granules is proposed. Various methods of preparation and storage of the granular material are discussed. A solution of sulfuric acid was used as a binder. It was found that the addition of an oxidizing agent $(Fe^{3+}$ and NO_{2}$^{−}$) when irrigating the granules had an effect on the recovery of metals. Changes in the recovery performance of non-ferrous metals into solution were studied under subsequent heap leaching of the material during a period of positive temperatures. The role of nitrogen compounds, in particular, nitrous acid, on the recovery of metals into solution after the preliminary storage of granules at below 0 °C temperatures is also discussed. |
| Starting Page | 129 |
| e-ISSN | 2075163X |
| DOI | 10.3390/min12020129 |
| Journal | Minerals |
| Issue Number | 2 |
| Volume Number | 12 |
| Language | English |
| Publisher | MDPI |
| Publisher Date | 2022-01-23 |
| Access Restriction | Open |
| Subject Keyword | Minerals Concentration Tailings Sulfuric Acid Granulation Ferric Iron Nitrite Ion Heap Leaching Temperature Below 0 °c Copper Nickel |
| Content Type | Text |
| Resource Type | Article |
