Název: Effect of residual elements on quality of pure zinc
Autoři: Luptáková, Natália ; Pešlová, F. ; Stodola, J.
Typ dokumentu: Příspěvky z konference
Konference/Akce: Deterioration, Dependability, Diagnostics, Brno (CZ), 2014-10-07 / 2014-10-08
Rok: 2014
Jazyk: eng
Abstrakt: The paper deals with the nature 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 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 (with zinc and other elements) hard and brittle compounds. If these compounds diffuse into the lining during thermal processes, they become the cause of stress in metallurgical ceramics. The emergence of these chemical reactions may subsequently affect the entire metallurgical zinc smelting process. From the microstructure viewpoint, the heterogeneity of 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.
Klíčová slova: metallurgical process; phases; residual elements; zinc
Zdrojový dokument: Deterioration, Dependability, Diagnostics, ISBN 978-80-7231-969-5

Instituce: Ústav fyziky materiálů AV ČR (web)
Informace o dostupnosti dokumentu: Dokument je dostupný v příslušném ústavu Akademie věd ČR.
Původní záznam: http://hdl.handle.net/11104/0239162

Trvalý odkaz NUŠL: http://www.nusl.cz/ntk/nusl-177636


Záznam je zařazen do těchto sbírek:
Věda a výzkum > AV ČR > Ústav fyziky materiálů
Konferenční materiály > Příspěvky z konference