Original scientific paper

Harmfulness of moulding sands with bentonite and lustrous carbon carriers

M. Holtzer ; AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland
B. Grabowska ; AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland
S. Żymankowska-Kumon ; AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland
D. Kwaśniewska-Królikowska ; AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland
R. Dańko ; AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland
W. Solarski ; AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland
A. Bobrowski ; AGH University of Science and Technology, Faculty of Foundry Engineering, Kraków, Poland

Abstract

Procedures have been developed to determine the volume, rate and composition (particularly BTEX: benzene, toluene, ethylbenzene and xylenes and PAHs (polycyclic aromatic hydrocarbons)) of gas evolution from moulds and cores prepared with various binders as a means of harmfulness of moulding sands. The rate of gas evolution from green sands with four different lustrous carbon carrier and BTEX content were determined. The gas evolution rates are highest in the range of about 20 to 30 s after contact with molten metal. In practice during the first 200-250 s the total emission of gases generated in investigated samples occurred. The main emitted component from the BTEX group was benzene.

Keywords

moulding sand; castings; bentonite; foundry

Hrčak ID:

82900

URI

https://hrcak.srce.hr/82900

Publication date:

1.10.2012.

Article data in other languages: croatian

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