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| Content Provider | Springer Nature Link |
|---|---|
| Author | Saviva, Yu. A. Popov, V. A. Portov, A. B. Tsemekhman, L. Sh. |
| Copyright Year | 2014 |
| Abstract | Three series of experiments on oxidizing roasting of sulfide polymetallic concentrates in a laboratory fluidized bed furnace are performed to develop an economically efficient technology of processing the sulfide polymetallic ore concentrate of the Artem’evsk deposit (Kazakhstan). The composition of the initial concentrate and the products of its oxidizing roasting are studied. The mineral composition of the concentrate is determined, and it demonstrates that this material tends toward intense spinel formation under oxidizing roasting conditions. The main structural constituents of the cinder are found to be sulfate-spinel conglomerates and oxide and sulfide particles. The possible ways of formation of these constituents are discussed using the obtained experimental data, the existing theoretical concepts, and the results of thermodynamic analysis. The calculations are performed using the FactSage software package and database. The formation of oxide and spinel components are found to be caused by both direct oxidation of sulfide minerals (primary processes) and the interaction of primary products with sulfuric anhydride and each other (secondary processes). In turn, all sulfates in the cinder are the products of secondary processes, and primary sulfate formation does not take place in roasting under the chosen conditions. Spinels cannot be completely removed from the cinder using their sulfation because of predominant consumption of sulfuric anhydride for interaction with oxide components. The optimum roasting conditions that ensure the formation of the best cinder for subsequent hydrometallurgical processing are chosen on the basis of the obtained data. The degree of extraction of nonferrous metals achieved upon leaching of the cinder is 94–96 wt %. |
| Starting Page | 351 |
| Ending Page | 357 |
| Page Count | 7 |
| File Format | |
| ISSN | 00360295 |
| Journal | Russian Metallurgy (Metally) |
| Volume Number | 2014 |
| Issue Number | 5 |
| e-ISSN | 15556255 |
| Language | English |
| Publisher | Pleiades Publishing |
| Publisher Date | 2014-09-01 |
| Publisher Place | Moscow |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Metallic Materials |
| Content Type | Text |
| Resource Type | Article |
| Subject | Metals and Alloys |
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