NDLI: Recycling of Zinc- and Lead-Bearing Residues with Pyrolysis Gas

Content Provider	Springer Nature Link
Author	Pichler, C. Antrekowitsch, J.
Copyright Year	2015
Abstract	Efforts in the metallurgical industry for an approximation to the zero waste concept has led to many different investigations. Together with the greenhouse effect, CO$_{2}$ emissions have caused additional costs for different process steps in the industry. For this reason, alternative carbon carriers have been sought, and charcoal was found to be an ideal substitute, due to its CO$_{2}$ neutrality. In order to use it in the metallurgical industry, an optimization of the charcoal production through a carbonization process must be carried out. Beside the charcoal, pyrolysis gas also occurs during the heating of wood or agricultural wastes under the exclusion of air. Because of combustible compounds in this gas, it is possible to use it as a reduction agent instead of fossil carbon carriers. Together with the idea of preventing landfilling of metallurgical by-products, an investigation was carried out to treat zinc- and lead-containing materials. For this issue a special process concept was designed and developed. The main aspect was to recycle the zinc- and lead-containing Waelz slag, which results from the processing of steel mill dusts, in a vertical retort. Two different sizes of facilities were constructed to perform the reaction system of the solid Waelz slag with the gaseous reduction agent of pyrolysis gas.
Starting Page	2038
Ending Page	2046
Page Count	9
File Format	PDF
ISSN	10474838
Journal	JOM
Volume Number	67
Issue Number	9
e-ISSN	15431851
Language	English
Publisher	Springer US
Publisher Date	2015-07-25
Publisher Institution	The Minerals, Metals & Materials Society (TMS)
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Engineering Chemistry/Food Science Physics Environment Earth Sciences
Content Type	Text
Resource Type	Article
Subject	Engineering Materials Science

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