Scholarly record

WASTES CREATED IN FOUNDRY AND THEIR TREATMENT

A. Pribulova, M. Bartosova

Abstract

The European foundry industry is the third largest in the world for ferrous castings and the second largest for non-ferrous ones. the annual production of castings in the enlarged European Union amounts 11.7 million tonnes of ferrous and 2.8 million tonnes of non-ferrous castings. The foundry industry is a major player in the recycling of metals. steel, cast iron and aluminium scrap is remelted into new products. The most possible negative environmental effects of foundries are related to the presence of a thermal process and the use of mineral additives. environmental effects therefore are mainly related to the exhaust and off gases and to the re-use of disposal of mineral residues. A good segregation of materials is essential to facilitate opportunities for recovery, recycling and re-use. Waste should always be recycled or recovered unless a satisfactory justification has been accepted by the regulator that recovering is “technically and economically impossible”. In general, the waste streams comprise: raw material dusts collected in bag or cartridge filters slag from desulphurisation slag from melting melting dust and fume collected in a filter plant casting dust and fume collected in a filter plant fettling dusts collected in a abatement plant chips and turnings from fettling used abrasives and dust from shot blasting refractory. This contribution deals with dusts created in different steps of foundry process and with possibilities of their treatment and next utilization.

Publication details

Back to publication list