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POSSIBILITIES OF PELLETIZING AND BRIQUETTING OF FLY DUSTS FROM STEEL AND CAST IRON PRODUCTION
Abstract
Fly dusts creates by steel and cast iron melting. Their properties depends on a type of melting aggregate. For steel it is first of all a fly dust from electric arc furnace, its chemical composition is depended on the kind of produced steel. A cupola furnace is the most used furnace for cast iron production. Fly dusts from steel and cast iron production contain some part of FeO that is reducible in a cupola and blast furnace. It is a very fine material and it has to be pelletized or briquetted before its next use. In contribution the fly dusts from two kinds of cupola furnaces and from electric arc furnace were analyzed. They were pelletized only with addition of water. The briquetting was made with different addition of water glass, bentonite and cement without drying, with drying and after one month. Stability of briquettes was tested by compression –strength test and by break down test.
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