Development of a Sustainable Metallurgical Process to Valorize Copper Smelting Wastes with Olive Stones-Based Biochar

Flue dust waste coming from a copper (Cu) smelting company has been valorized using a newly developed metallurgical process with the aim of recovering a dust concentrated in valuable metals, such as lead (Pb) and zinc (Zn), and studying the feasibility of replacing anthracite with biochar as reducin...

Full description

Saved in:
Bibliographic Details
Published in:Metals (Basel ) 2022-10, Vol.12 (10), p.1756
Main Authors: Adrados, Aitziber, Merchán, Mikel, Obregón, Alejandro, Artola, Antxon, Iparraguirre, Jon Ander, García de Cortázar, Maider, Eguizabal, David, Demey, Hary
Format: Article
Language:English
Subjects:
Anthracite
Base metal
biochar
Biomass
Copper
Cost control
Dust
Emissions
Flue dust
Furnaces
Laboratories
Lead
metal recovery
Metallurgy
Metals
Mixtures
olive stones
pyrometallurgy
reducing agent
Reducing agents
Smelting
Sustainable development
Thermal plasmas
waste valorization
Zinc
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Flue dust waste coming from a copper (Cu) smelting company has been valorized using a newly developed metallurgical process with the aim of recovering a dust concentrated in valuable metals, such as lead (Pb) and zinc (Zn), and studying the feasibility of replacing anthracite with biochar as reducing agent. Metallurgical trials using different mixtures of reducing agents have been performed in a furnace at 1400 °C. This furnace employs a high-power thermal plasma (HPTP) system as energy source. Using copper as the base metal, pellets containing a mixture of the waste, different reducing agents, and binder were introduced into the furnace for their dissolution. Recovery yields in the range of 45–85 wt.% for Pb and Zn were obtained in the flue dusts. All the trials proved the effectiveness of the developed process to enrich the flue dusts in valuable metals, including those only using biochar as reducing agent. Further trials will be carried out in order to better control the parameters involved in the metallurgical process developed and improve its efficiency.
ISSN:2075-4701
2075-4701
DOI:10.3390/met12101756