DBPapers
DOI: 10.5593/SGEM2014/B51/S20.017

CAST IRON PRODUCTION AND ITS IMPACT ON THE ENIRONMENT

A. Pribulova, 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, 121-128 pp

ABSTRACT
Foundry industry is a branch of industry which generates a huge quantity of wastes. Increase of raw materials prices (cast iron scrap, sand, energy resources) and cost for dumping load, it follows that the economical factors become very important arguments in the process of minimizing of wastes generation. Cast iron is a still very used material for castings production. On the present 44 millions of tons of grey cast irons castings are produced (it is around 48% of world production of castings ) and around 23 millions of tons of castings from nodular cast iron (25% of world production) In Slovakia the castings from grey cast iron and nodular cast iron are produced. Cast iron production is connected with emissions origin (gasses and particulates), with slag origin, with water pollution and with wastes generation. Typical foundry can creates 8 – 40 kinds of different wastes (used sand mixtures, slags, mud from scrubers, dusts from air cleaning, dust from castings cleaning and from grinding etc. 88% of all wastes from cast iron foundry presents used sand mixture, slag from melting operations creates 3,28%, the dusts from dedusting of furnaces and dusts from cleaning present 3,20%, mud from dust cleaning – 1,8% and the waste from refractory materials -0,16%. The article analyses the impact of cast iron castings production on environment.

Keywords: cast iron, environment, waste, scrap