Processing of Waste from Enrichment with the Production of Cement Clinker and the Extraction of Zinc

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 Chem...

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Bibliographic Details
Published in:Materials 2022-01, Vol.15 (1), p.324
Main Authors: Kolesnikov, Alexandr, Fediuk, Roman, Kolesnikova, Olga, Zhanikulov, Nurgali, Zhakipbayev, Bibol, Kuraev, Rasim, Akhmetova, Elmira, Shal, Aizhan
Format: Article
Language:English
Subjects:
Aluminum
Calcium aluminate
Calcium aluminum ferrite
Cement
Clinker
Dicalcium silicate
Distillation
Energy
Energy value
Extractive metallurgy
Heat
Metallurgical analysis
Minerals
Phase transitions
Software packages
Tricalcium aluminate
Zinc
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Summary: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 ΔG = -893.8 kJ to 1500 °C at ΔG = -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 ΔG = -898.9 kJ to 1500 °C at ΔG = -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.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15010324