Abstract
Due to the presence of harmful substances in resins those mould sands may
be hazardous to the natural environment and workers. The
general assessment of harmfulness of sands used for molds and cores
encompasses 2 basic points: emission of hazardous substances during
processes of preparing sands, pouring mold with liquid metals (high
temperatures), cooling and shaking-out; possibility of washing out
hazardous substances from used sands to the environment, during storage or
economic use outside foundries. We present the results of research on the
emission of BTEX compounds from mould sands with phenolic resins during
pouring liquid metal of different temperature (cast iron and Al alloy).
The research was conducted according to the original method prepared by
the authors, which has been used for years in cooperation with various
foundries (Poland, abroad).
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