Recycling of Zinc- and Lead-Bearing Residues with Pyrolysis Gas
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- 作者：C. Pichler ; J. Antrekowitsch
- 刊名：JOM Journal of the Minerals, Metals and Materials Society
- 出版年：2015
- 出版时间：September 2015
- 年：2015
- 卷：67
- 期：9
- 页码：2038-2046
- 全文大小：1,270 KB
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J. Antrekowitsch (1)
1. Christian Doppler Laboratory for Optimization and Biomass Utilization in Heavy Metal Recycling, Department of Nonferrous Metallurgy, Montanuniversitaet Leoben, Franz-Josef-Stra脽e 18, 8700, Leoben, Austria - 刊物类别：Chemistry and Materials Science
- 刊物主题：Chemistry
Materials Science
Metallic Materials
Nanotechnology
Crystallography - 出版者：Springer Boston
- ISSN：1543-1851
文摘
Efforts in the metallurgical industry for an approximation to the zero waste concept has led to many different investigations. Together with the greenhouse effect, CO2 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 CO2 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.