RESEARCH OF PRIMARY SLAGS OF ELECTRIC STEELMAKING PRODUCTION
The article investigates the possibility of involving in the processing of primary steelmaking slags with additional extraction of iron and slag for the production of construction products.In the Pavlodar region of the Republic of Kazakhstan, in the production of steel at the electric steelmaking enterprises «Casting» LLP and «KSP Steel» LLP, the resulting electric steelmaking slags and dust are stored in slag heaps and are practically not used, despite the high content of iron oxides and metallic iron kings in them (up to 40 % by weight in certain types of slags).The chemical and mineralogical composition of primary electric steelmaking slag with a total iron content of more than 20 % has been experimentally determined, which includes the following minerals: wustite (FeO), magnetite (Fe3O4), helenite (Ca2Al(Al,Si)2O7), mervinite (Ca3Mg(SiO4)2).In the course of the conducted experimental studies on the processing of primaryelectric steelmaking slags by reducing induction melting of slag-lime-coke pellets, the possibility of extracting iron-carbon alloys and slag for the production of concrete has been established.