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). Keywords: Environment Protection, Phenolic Resin, BTEX, Alluminium, Foundry.
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