Value-added materials from the hydrometallurgical processing of jarosite waste

Benjamin P. Wilson (Corresponding author), Petteri Halli, Inka Orko, Petteri Kangas, Mari Lundström, Pertti Koukkari

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

Abstract

Jarosite is a leach residue that can be produced by industrial bulk metal treatment processes and typically has the chemical formula MxFe3(SO4)2(OH)6, where M normally represents a metal cation. The largest source of jarosite is electrolytic zinc processing [1], which worldwide has an annual production of 11-12 Mt and an associated jarosite waste of 5-6 Mt that can cause important challenges due to its classification as a problem waste. Moreover, as zinc ore typically contains many other commercial/critical metals, the content of valuable materials in this material is significant. An analysis of jarosite from Kokkola, Finland shows that it contained as much metal as many present day commercial ores: ~15% iron, 2% zinc, 3 % lead, 150 g/t silver, 0.5 g/t gold, 100 g/t indium and 40 g/t gallium. Until now, jarosite related research has concentrated on its use in landfill and construction purposes [2], though there is increasing interest in finding methods to efficiently reprocess/recycle jarosite into valuable products [3, 4]. The hydrometallurgical process currently under development by VTT and Aalto University exploits jarosite powdery nature to undertake wet chemical processing. This low cost and energy efficient operation is targeted at the recovery of concentrates which contain the major value-added metals.
Original languageEnglish
Title of host publicationMineral Engineering Conference MEC2016
PublisherEDP Sciences
DOIs
Publication statusPublished - 2016
MoE publication typeA4 Article in a conference publication
EventMineral Engineering Conference, MEC 2016 - Swieradow-Zdroj, Poland
Duration: 25 Sep 201628 Sep 2016

Publication series

SeriesE3S Web of Conferences
Volume8

Conference

ConferenceMineral Engineering Conference, MEC 2016
Abbreviated titleMEC 2016
CountryPoland
CitySwieradow-Zdroj
Period25/09/1628/09/16

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    Wilson, B. P., Halli, P., Orko, I., Kangas, P., Lundström, M., & Koukkari, P. (2016). Value-added materials from the hydrometallurgical processing of jarosite waste. In Mineral Engineering Conference MEC2016 [01015] EDP Sciences. E3S Web of Conferences, Vol.. 8 https://doi.org/10.1051/e3sconf/20160801015