Influence of a Reclaimed Sand Addition to Moulding Sand with Furan Resin on Its Impact on the Environment

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• 作者：Mariusz Holtzer ; Rafa艂 Da艅ko ; Angelika Kmita
• 关键词：Foundry sands ; Air pollutions ; Leaching ; Emission ; PAHs ; BTEX
• 刊名：Water, Air, and Soil Pollution
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：227
• 期：1
• 全文大小：1,472 KB
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• 作者单位：Mariusz Holtzer (1) r> Rafa艂 Da艅ko (1) r> Angelika Kmita (2) r>r>1. AGH University of Science and Technology. Faculty of Foundry Engineering, Reymonta 23 street, 30-059, Krakow, Poland r> 2. AGH University of Science and Technology. Academic Centre for Materials and Nanotechnology, al. A. Mickiewicza 30, 30-059, Krakow, Poland r>
• 刊物类别：Earth and Environmental Science
• 刊物主题：Environmentr>Environmentr>Atmospheric Protection, Air Quality Control and Air Pollutionr>Waste Water Technology, Water Pollution Control, Water Management and Aquatic Pollutionr>Terrestrial Pollutionr>Hydrogeologyr>
• 出版者：Springer Netherlands
• ISSN：1573-2932

文摘

Metalcasting involves having a molten metal poured in a hollow mould to produce metal objects. These moulds are generally made of sand and are chemically bonded, clay-bonded, or even unbounded. There are many binder systems used. Binders based on furfuryl resins constitute currently the highest fraction in the binders no-bake group. Moulding sand, after knocking out the cast, is partially reclaimed, and the remaining part, known as waste foundry sand is used or stored outside the foundry. In this case, the environment hazardous organic compounds and metals can be leached from the moulding sand, thus causing pollution of water and soil. Also during the casting moulds with molten metal, they emit pyrolysis gases containing many different compounds, often dangerous from the BTEX and PAH group, which has adverse impacts on the environment and workers. The article presents the results of research on the impact of the regenerate addition to the moulding sand matrix on emitted gases and the degree of threat to the environment due to leaching of hazardous components. Therefore, for the total assessment of the moulding sands harmfulness, it is necessary to perform investigations concerning the dangerous substances elution into the environment during their management and storage, as well as investigations concerning emissions of hazardous substances (especially from the BTEX and PAHs group) during moulds pouring, cooling, and casting knocking out. Both kinds of investigations indicated that reclaimed sand additions to moulding sands have significantly negative influence on the environment and working conditions. Keywords Foundry sands Air pollutions Leaching Emission PAHs BTEX