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1 Prace Instytutu Metalurgii Żelaza

1 2009

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Možnosti skusovenia prachov z výroby liatiny

Pribulová A., Baricová D., Gengeľ P., Demeter P.

Prace Instytutu Metalurgii Żelaza

2009

T. 61, nr 5

45-47

A large volume of dust wastes is generated in each stage of the iron casting production. They differ in their chemical composition, morphology and granulometry. According to the chemical composition these wastes have different contents of major components i.e. metallic iron, ferrous oxide, silicon oxide, and aluminum oxide, and therefore they can be divided into tree basic categories: metallic dusts, mixed dusts and sand dusts. The aim of the experiments which are dealt with in the present paper was the fi rst group, i.e. metallic dusts. Within the foundry industry this type of dusts is mainly represented by dust from the shot blasting of iron castings and by dust from the grinding. These materials contain a high proportion of iron and therefore they are a very valuable material that is reusable in the foundry process; the condition is their conversion to compact (solid) state. Dust obtained from the shot blasting of castings was pelletized using bentonite, in the case of dust from the grinding of castings several methods of molding were tested, while it was found that the given material cannot be pelletized, but it can be used in the production of briquettes, where water glass will be used as a binder.