Abstract
Foundry dust from blasting and grinding of castings contain a high amount
of iron, ergo it is possible its recycling in foundry process.
Dust was compacted by briquetting, two kinds of briquettes were prepared (A
contained 95% magnetic part of dust from casting blasting +5% bentonite
and B contained 95% mixture of dust from casting grinding and magnetic
part of dust from casting blasting + 5% bentonite) and used as a part of
charge into the electric induction furnace. It was found that addition of
briquettes has had an influence of a chemical composition of cast iron
above all on content of sulphur, phosphorus and silicon. It was not
reflected in decrease in tensile strength and in microstructure. Yield of
metal from briquettes was not lower then 70%.
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