Strategies for the Upgrade of a TBZC Product (Tetra Basic Zinc Chloride) by Selective Removal of the Impurity Chlorine

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in Konferenzband


When recycling materials containing zinc in hydrochloric acid processes, the precipitation of zinc can lead to the formation of various compounds which can be assigned to the group of zinc hydroxide chlorides. This paper compares different approaches for the selective removal of chlorine from tetra basic zinc chloride to obtain a cleaned zinc product. The removal of chlorine via soda leaching at atmospheric conditions as well as under overpressure in an autoclave was investigated. Furthermore, concepts were considered in which the chlorine can be evaporated as a compound and thus separated via selective temperature and atmospheric control. Thereby, a focus is on the simulation of pyrohydrolysis and clinkering for the separation of chlorine via gaseous compounds whereby zinc remains and can be brought to further processing. The simulations with multivariant parameters are carried out using the thermochemical calculation software package FactSage.
TitelTMS 2022
Untertitel151st Annual Meeting and Exhibition Supplemental Proceedings
Herausgeber (Verlag)Springer Cham
ISBN (elektronisch)978-3-030-92381-5
ISBN (Print)978-3-030-92380-8
PublikationsstatusVeröffentlicht - 7 Feb. 2022
Veranstaltung151st Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2022 - Anaheim, USA / Vereinigte Staaten
Dauer: 27 Feb. 20223 März 2022


NameMinerals, Metals and Materials Series
ISSN (Print)2367-1181
ISSN (elektronisch)2367-1696


Konferenz151st Annual Meeting and Exhibition of The Minerals, Metals and Materials Society, TMS 2022
Land/GebietUSA / Vereinigte Staaten

Bibliographische Notiz

Funding Information:
This work was funded by the Christian Doppler Research Association, the Austrian Federal Ministry for Digital and Economic Affairs, and the National Foundation for Research, Technology, and Development.

Publisher Copyright:
© 2022, The Minerals, Metals & Materials Society.

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