2019-Sustainable Industrial Processing Summit
SIPS2019 Volume 4: Kozlov Intl. Symp. / Sustainable Materials Recycling Processes and Products
| Editors: | F. Kongoli, S.V. Alexandrovich, D.V. Grigorievich, L.L. Igoryevich, I. Startsev, T.A. Vladimirovich |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2019 |
| Pages: | 193 pages |
| ISBN: | 978-1-989820-03-2 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Model Analysis of the Methods to Decrease Energy Consumption and CO2 Emissions during Fuming- and Waelz-Processes Performed for Zinc-Bearing Middlings
Viktor Shumskiy1; Natalya Kulenova2;1VNIITSVETMET, Ust-Kamenogorsk, Kazakhstan; 2EAST KAZAKHSTAN STATE TECHNICAL UNIVERSITY, Ust-Kamenogorsk, Kazakhstan;
Type of Paper: Regular
Id Paper: 42
Topic: 7
Abstract:
The objective of the work was a model analysis of possible methods to decrease the consumption of carbon energy resources and associated emissions of CO2 into the atmosphere during fuming and Waelz processing of zinc-bearing middlings. The METSIM models of fuming process for zinc slag from lead smelting and Waelz process for the charge, based on zinc residues of electro-lytic zinc operation, were developed by the authors and used for this analysis. Adaptation of models to the data of industrial processes made it possible to use them for the analysis of options to decrease energy consumption and CO2 emission with changes in operating parameters of the studied processes. According to the model analysis, carbon consumption and CO2 emissions into the atmosphere during zinc slag fuming can be decreased when the blast is heated and the O2/C ratio is decreased, while oxygen enrichment of the blast is inefficient. During the Waelz pro-cessing of charge, based on zinc residues, the highest estimated effect in carbon energy resources saving is achieved by the use of additional oxygen blasting and heated air blasting with associat-ed decrease in air suction into the kiln from the atmosphere. Thus, the model analysis made it possible to compare and optimize various options to decrease the consumption of carbon energy resources and CO2 emission into the atmosphere during processing of zinc-bearing middlings.
Keywords:
Model analysis; Fuming; Waelz process; Zinc-bearing middlings; Carbon energy resources; CO2 emissionReferences:
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