Experimental Investigation of Pyrometallurgical Treatment of Zinc Residue

Minna Rämä; Ari Jokilaakso; Lassi Klemettinen; Justin Salminen; Pekka Taskinen

doi:10.1007/978-3-319-95022-8_79

Experimental Investigation of Pyrometallurgical Treatment of Zinc Residue

Minna Rämä, Ari Jokilaakso, Lassi Klemettinen, Justin Salminen, Pekka Taskinen

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

203 Downloads (Pure)

Abstract

Iron containing leach residues like jarosite and goethite from electrolytic zinc production contain many valuable metals and harmful substances. These metals and substances should be removed in order to obtain an acceptable, stable and reusable product, and maximize economic feasibility as well as minimize environmental footprint. In this work, the processing of jarosite leach residue was studied in laboratory scale experiments under oxidizing and reducing conditions at high temperatures. First, the pretreated material was melted and oxidized to produce a melt of metal oxides. Second, the oxide melt was reduced in CO –CO2 atmosphere. Target after the reduction step was to obtain a clean slag and a liquid metal or speiss phase that collects the valuable metals , such as silver . The kinetics of the thermal processing were studied for determining optimal times and conditions for the aforementioned process steps. The preliminary results show that the process is thermodynamically feasible, and the desired phases can be obtained in the experimental conditions investigated.

Original language	English
Title of host publication	Extraction 2018
Subtitle of host publication	Proceedings of the First Global Conference on Extractive Metallurgy
Editors	Boyd Davis, M Moats, S Wang
Place of Publication	Warrendale
Publisher	Springer
Pages	981-992
Number of pages	12
ISBN (Electronic)	978-3-319-95022-8
ISBN (Print)	978-3-319-95021-1
DOIs	https://doi.org/10.1007/978-3-319-95022-8_79
Publication status	Published - 2018
MoE publication type	A4 Conference publication
Event	Global Conference on Extractive Metallurgy - Ottawa, Canada Duration: 26 Aug 2018 → 29 Aug 2018 Conference number: 1 http://www.extractionmeeting.org/Extraction/Home/Extraction/Default.aspx?hkey=7b5c7a17-4f49-4312-a245-8178042aab43

Publication series

Name	The Minerals, Metals & Materials Series

Conference

Conference	Global Conference on Extractive Metallurgy
Country/Territory	Canada
City	Ottawa
Period	26/08/2018 → 29/08/2018
Internet address	http://www.extractionmeeting.org/Extraction/Home/Extraction/Default.aspx?hkey=7b5c7a17-4f49-4312-a245-8178042aab43

Keywords

Jarosite smelting ⋅ Thermal processing ⋅ Circular economy Slag valorization

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1007/978-3-319-95022-8_79

CHEM-Extraction-Experimental investigation of pyrometallurgical treatment of zinc 2018Accepted author manuscript, 696 KBLicence: Unspecified

CMEco (Jokilaakso)
Jokilaakso, A. (Principal investigator), Rinne, M. (Project Member), Sibarani, D. (Project Member), Hellsten, N. (Project Member), Rantataro, J. (Project Member), Klemettinen, L. (Project Member) & Rämä, M. (Project Member)
01/01/2017 → 30/04/2019
Project: Business Finland: Other research funding
CMEco: Circular Metal Ecosystem
Aji, A. (Project Member), Lundström, M. (Principal investigator), Agarwal, V. (Project Member), Hamuyuni, J. (Project Member), Khalid, M. K. (Project Member), Seisko, S. (Project Member), Halli, P. (Project Member), Sinisalo, P. (Project Member), Jafari, S. (Project Member), Peng, C. (Project Member), Wilson, B. (Project Member), Leikola, M. (Project Member), Elomaa, H. (Project Member), Partinen, J. (Project Member), Revitzer, H. (Project Member), Wang, Z. (Project Member) & Kalliomäki, T. (Project Member)
01/01/2017 → 30/04/2019
Project: Business Finland: Other research funding
CMEco (Taskinen)
Taskinen, P. (Principal investigator) & Hellsten, N. (Project Member)
01/01/2017 → 30/04/2019
Project: Business Finland: Other research funding

Raw Materials Research Infrastructure
Karppinen, M. (Manager)
School of Chemical Engineering
Facility/equipment: Facility

Cite this

Rämä, M., Jokilaakso, A., Klemettinen, L., Salminen, J., & Taskinen, P. (2018). Experimental Investigation of Pyrometallurgical Treatment of Zinc Residue. In B. Davis, M. Moats, & S. Wang (Eds.), Extraction 2018: Proceedings of the First Global Conference on Extractive Metallurgy (pp. 981-992). (The Minerals, Metals & Materials Series). Springer. https://doi.org/10.1007/978-3-319-95022-8_79

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title = "Experimental Investigation of Pyrometallurgical Treatment of Zinc Residue",

abstract = "Iron containing leach residues like jarosite and goethite from electrolytic zinc production contain many valuable metals and harmful substances. These metals and substances should be removed in order to obtain an acceptable, stable and reusable product, and maximize economic feasibility as well as minimize environmental footprint. In this work, the processing of jarosite leach residue was studied in laboratory scale experiments under oxidizing and reducing conditions at high temperatures. First, the pretreated material was melted and oxidized to produce a melt of metal oxides. Second, the oxide melt was reduced in CO –CO2 atmosphere. Target after the reduction step was to obtain a clean slag and a liquid metal or speiss phase that collects the valuable metals , such as silver . The kinetics of the thermal processing were studied for determining optimal times and conditions for the aforementioned process steps. The preliminary results show that the process is thermodynamically feasible, and the desired phases can be obtained in the experimental conditions investigated.",

keywords = "Jarosite smelting ⋅ Thermal processing ⋅ Circular economy Slag valorization",

author = "Minna R{\"a}m{\"a} and Ari Jokilaakso and Lassi Klemettinen and Justin Salminen and Pekka Taskinen",

year = "2018",

doi = "10.1007/978-3-319-95022-8_79",

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booktitle = "Extraction 2018",

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note = "Global Conference on Extractive Metallurgy ; Conference date: 26-08-2018 Through 29-08-2018",

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Rämä, M, Jokilaakso, A, Klemettinen, L, Salminen, J & Taskinen, P 2018, Experimental Investigation of Pyrometallurgical Treatment of Zinc Residue. in B Davis, M Moats & S Wang (eds), Extraction 2018: Proceedings of the First Global Conference on Extractive Metallurgy. The Minerals, Metals & Materials Series, Springer, Warrendale, pp. 981-992, Global Conference on Extractive Metallurgy, Ottawa, Ontario, Canada, 26/08/2018. https://doi.org/10.1007/978-3-319-95022-8_79

Experimental Investigation of Pyrometallurgical Treatment of Zinc Residue. / Rämä, Minna; Jokilaakso, Ari; Klemettinen, Lassi et al.
Extraction 2018: Proceedings of the First Global Conference on Extractive Metallurgy. ed. / Boyd Davis; M Moats; S Wang. Warrendale: Springer, 2018. p. 981-992 (The Minerals, Metals & Materials Series).

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-review

TY - GEN

T1 - Experimental Investigation of Pyrometallurgical Treatment of Zinc Residue

AU - Rämä, Minna

AU - Jokilaakso, Ari

AU - Klemettinen, Lassi

AU - Salminen, Justin

AU - Taskinen, Pekka

N1 - Conference code: 1

PY - 2018

Y1 - 2018

N2 - Iron containing leach residues like jarosite and goethite from electrolytic zinc production contain many valuable metals and harmful substances. These metals and substances should be removed in order to obtain an acceptable, stable and reusable product, and maximize economic feasibility as well as minimize environmental footprint. In this work, the processing of jarosite leach residue was studied in laboratory scale experiments under oxidizing and reducing conditions at high temperatures. First, the pretreated material was melted and oxidized to produce a melt of metal oxides. Second, the oxide melt was reduced in CO –CO2 atmosphere. Target after the reduction step was to obtain a clean slag and a liquid metal or speiss phase that collects the valuable metals , such as silver . The kinetics of the thermal processing were studied for determining optimal times and conditions for the aforementioned process steps. The preliminary results show that the process is thermodynamically feasible, and the desired phases can be obtained in the experimental conditions investigated.

AB - Iron containing leach residues like jarosite and goethite from electrolytic zinc production contain many valuable metals and harmful substances. These metals and substances should be removed in order to obtain an acceptable, stable and reusable product, and maximize economic feasibility as well as minimize environmental footprint. In this work, the processing of jarosite leach residue was studied in laboratory scale experiments under oxidizing and reducing conditions at high temperatures. First, the pretreated material was melted and oxidized to produce a melt of metal oxides. Second, the oxide melt was reduced in CO –CO2 atmosphere. Target after the reduction step was to obtain a clean slag and a liquid metal or speiss phase that collects the valuable metals , such as silver . The kinetics of the thermal processing were studied for determining optimal times and conditions for the aforementioned process steps. The preliminary results show that the process is thermodynamically feasible, and the desired phases can be obtained in the experimental conditions investigated.

KW - Jarosite smelting ⋅ Thermal processing ⋅ Circular economy Slag valorization

U2 - 10.1007/978-3-319-95022-8_79

DO - 10.1007/978-3-319-95022-8_79

M3 - Conference article in proceedings

SN - 978-3-319-95021-1

T3 - The Minerals, Metals & Materials Series

SP - 981

EP - 992

BT - Extraction 2018

A2 - Davis, Boyd

A2 - Moats, M

A2 - Wang, S

PB - Springer

CY - Warrendale

T2 - Global Conference on Extractive Metallurgy

Y2 - 26 August 2018 through 29 August 2018

ER -

Rämä M, Jokilaakso A, Klemettinen L, Salminen J, Taskinen P. Experimental Investigation of Pyrometallurgical Treatment of Zinc Residue. In Davis B, Moats M, Wang S, editors, Extraction 2018: Proceedings of the First Global Conference on Extractive Metallurgy. Warrendale: Springer. 2018. p. 981-992. (The Minerals, Metals & Materials Series). doi: 10.1007/978-3-319-95022-8_79

Experimental Investigation of Pyrometallurgical Treatment of Zinc Residue

Abstract

Publication series

Conference

Keywords

UN SDGs

Access to Document

Fingerprint

Projects

CMEco (Jokilaakso)

CMEco: Circular Metal Ecosystem

CMEco (Taskinen)

Equipment

Raw Materials Research Infrastructure

Cite this