DBPapers
DOI: 10.5593/SGEM2014/B51/S20.003

ANALYSE OF DUSTS ORIGIN IN THE SINGLE STEPS OF CASTINGS PRODUCTION

A. Pribulova, M. Bartosova, P. Futas
Wednesday 1 October 2014 by Libadmin2014

References: 14th International Multidisciplinary Scientific GeoConference SGEM 2014, www.sgem.org, SGEM2014 Conference Proceedings, ISBN 978-619-7105-17-9 / ISSN 1314-2704, June 19-25, 2014, Book 5, Vol. 1, 15-22 pp

ABSTRACT
Metal casting is a shape obtained by pouring liquid metal into a mould or cavity and allowing it to freeze and thus to take the form of the mould. Each step in foundry process is followed by wastes generation, especially dusts. During the casts production the huge quantity of dusts is generated, which have different physical and chemical properties. These dusts come from handling; preparation of raw materials, from melting; treating of molten metal, from preparation of sand mixture; core mixture, from casting of molten metal, casts cooling; shaking out from moulds and finishing operations of the raw cast. Quantity if different kinds of dusts is about 3,4% of all wastes. Producing of 1 tonne of cast iron creates about 61,4 kg dust with different chemical composition, granulometry and physical properties. The single steps of castings production create next quantities of the dust : scrap and charge handling, heating – 0.3 kg/tone, sand handling and preparation – 20 kg/tone, core making, baking – 0.6 kg/tone, pouring – 2.5 kg/tone, cooling – 5 kg/tone, shakeout – 16 kg/tone, cleaning, finishing – 8.5 kg/tone, cupola furnace – 8.5 kg/tone. The article shows the steps in foundry process that generate the highest quantity of the dust and there are described the sources of foundry dust origin.

Keywords: dust, particulate emission, moulding, melting, castings cleaning.