| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
11th International Symposium on High Temperature Metallurgical Processing
|
| Presentation Title |
M-6: Characterization and Treatment of Electric Arc Furnace Dusts Generated During Steel Production in Peruvian Industries |
| Author(s) |
Mery Cecilia Gomez-Marroquin, José Carlos D´Abreu, Roberto de Avillez, Sonia Letichevsky |
| On-Site Speaker (Planned) |
Mery Cecilia Gomez-Marroquin |
| Abstract Scope |
Selfreduction is a relatively–new pyrometallurgical treating process which aims to valuable metal recovery from mining-metallurgical industry wastes, mainly from steel-making industries. Electric Arc Furnace Dusts (EAFD) are still the most attracting materials to be tested in using this technique, due to its high magnetite and zinc ferrite contents. This work consisted in doing a thermodynamic approach using Thermocalc software in order to make Equilibrium Diagrams of magnetite and zinc ferrite in reducing atmospheres of CO. Characterizations by Atomic Absorption and DRX have determinated high contents of iron and zinc. Iron was present in the non-stoichiometric form of “hapkeite” (Fe1,34 Si0,06). A rare appearance of Moissanite–2H and CSi were also found. Thermic characterization allowed eliminate almost 15 % of volatile matter at 1000 °C. Finally, EAFD was partially reduced and show a high porosity, which would make it possible the recovery of its main metal content by carbothermal selfreduction. |
| Proceedings Inclusion? |
Planned: |