Original title: Microstructural Study and Analysis of Hard Zinc
Authors: Luptáková, Natália ; Pešlová, F. ; Stodola, P. ; Stodola, J.
Document type: Papers
Conference/Event: International Scientific Conference on Transport Means /19./, Kaunas (LT), 20151022
Year: 2015
Language: eng
Series: Transport Means Proceedings of the International Conference
Abstract: The presented work is focused on the character and morphology of the input material for the production of metallic zinc which is used in the production of ZnO through indirect pyrometallurgical processes. The input material is the key parameter in the production of high-quality zinc oxide. For the prediction of a complex production process when problematic situation may occur, the systematic analysis of the input zinc raw materials is needed. Undesirable phases in the feedstock can be identified through profound recognition of the source material and the nature of its microstructure. Chemical composition of zinc metal and zinc additives helps to detect the phases occurring in the matrix. Undesirable phases in the feedstock can form hard and brittle compounds. If these compounds diffuse into the lining during thermal processes, they become the cause of stress in metallurgical ceramics. From the microstructure viewpoint, the heterogeneity of the grain size, various morphology of intermediate phases, their layout, arrangement, etc. can be expected. The results obtained by analysis are used to minimize waste-zinc slag and to eliminate the conditions which enable the formation of the undesired product, thereby increasing the productivity of the zinc oxide production. Moreover, another important knowledge could be used for modernization and effective the process of industrial production of ZnO in practical application in military technologies.
Keywords: intermediate phase; metallurgy; pyrometallurgical process; residual elements; structural phase; zinc; zinc oxide
Host item entry: TRANSPORT MEANS 2015, PTS I AND II, ISSN 1822-296X

Institution: Institute of Physics of Materials AS ČR (web)
Document availability information: Fulltext is available at the institute of the Academy of Sciences.
Original record: http://hdl.handle.net/11104/0279582

Permalink: http://www.nusl.cz/ntk/nusl-373416


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