Processing of Waste from Enrichment with the Production of Cement Clinker and the Extraction of Zinc
| Autor: | Alexandr Kolesnikov, Roman Fediuk, Olga Kolesnikova, Nurgali Zhanikulov, Bibol Zhakipbayev, Rasim Kuraev, Elmira Akhmetova, Aizhan Shal |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: |
Technology
Microscopy QC120-168.85 technogenic material zinc sublimates QH201-278.5 thermodynamics enrichment tailings cement clinker zinc metasilicate Engineering (General). Civil engineering (General) Article TK1-9971 Descriptive and experimental mechanics General Materials Science Electrical engineering. Electronics. Nuclear engineering TA1-2040 |
| Zdroj: | Materials, Vol 15, Iss 324, p 324 (2022) Materials; Volume 15; Issue 1; Pages: 324 Materials |
| ISSN: | 1996-1944 |
| Popis: | This paper presents studies on the processing of enrichment tailings as a component of a raw mixture in order to obtain cement clinker, with simultaneous distillation of zinc. Thermodynamic studies were carried out in the temperature range of 600–1600 °C using the software application “HSC Chemistry 6” developed by the metallurgical company Outokumpu (Finland). As a result of the conducted studies, we found that zinc contributes to the intensification of mineral formation of cement clinker. In particular, it was found that the formation of belite is possible in the temperature range from 990.7 to 1500 °C with Gibbs energy values of −0.01 and −323.8 kJ (which is better than the standard process by −11.4 kJ), respectively; the formation of alite is possible in the temperature range from 982.9 to 1500 °C with Gibbs energy values of −0.05 and −402.1 kJ (better than the standard process by −11.4 kJ), respectively; the formation of tricalcium aluminate is thermodynamically possible in the temperature range from 600 °C at ΔGTo = −893.8 kJ to 1500 °C at ΔGTo = −1899.3 kJ (better than the standard process by −1570.1 kJ), respectively; and the formation of four calcium aluminoferrite is possible in the temperature range from 600 °C at ΔGTo = −898.9 kJ to 1500 °C at ΔGTo = −1959.3 kJ (better than the standard process by −1570.2 kJ), respectively, with simultaneous distillation of zinc into a gaseous state for its further capture. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|