Content optimalization of harmful impurities and nonferous metals in progressive formed steels for their higher useful properties

The steel and cast iron scrap is one of the principal charging materials for the steelmaking furnaces. This strategic material, however, contains harmful elements and non-ferrous metals, whose content is rising from one year to another above their previous limits. In line with implementation of up-to-date flexible steelmaking units and with enhancement of steel production in the EAFs there is expacted also an enhanced proportion of scrap to be charged for melting high-grade steels subjected to further progressive forming routes. Omission of the complex issue of the "non-ferrous metals in steel" in relation with the economical, technological, qualitative and ecological factors could produce far-reaching deleterious consequences. Accordingly, this project is aimed at analyzing the possible ways of optimization of the content of harmful elements - especially the non-ferrous metals (Cu, Sn, ?) in steel and investigation into ways how to diminish their undesirable effect by viewing the