METHOD FOR MAKING STEEL IN AN ELECTRIC ARC FURNACE AND ELECTRIC ARC FURNACE

The inventions relate to the field of metallurgy, and specifically to a method for producing steel and to a design for an electric arc furnace for implementing same. The method involves loading a charge into an operating space of a furnace, said charge consisting of scrap metal and of agglomerated oxy-carbon materials, inputting electric energy, fuel, a carburizer, a flux and gaseous oxygen, heating and melting the charge using electric arcs with the decarburization of a metal bath, and releasing metal and slag from the furnace. Prior to melting, a portion of the oxy-carbon materials is loaded, simultaneously with a first portion of metal charge, into the central zone of the furnace, and the remaining oxy-carbon materials are introduced into the melted charge during the melting process at a specific loading speed of 0.5-10 kg/min per 1 megavolt-ampere of power of the transformer of the electric arc furnace, and the size of the pieces of oxy-carbon materials is selected to be between 5 and 80 millimeters. The walls of the furnace housing are provided with at least three apertures, which are spaced along the perimeter thereof, for loading oxy-carbon materials into the central zone of the furnace, which apertures are provided 0.2-1.0 meters below the level of an upper mark on the furnace housing. The invention makes it possible to reduce specific electricity consumption when melting metal charge, increase the output of iron from oxy-carbon materials, and also increase the relative quantity of said materials in the overall mass of charge. L'invention se rapporte au domaine de la métallurgie et notamment à un procédé de production d'acier et à la conception d'un four à arc électrique pour sa mise en œuvre. Selon le procédé, on effectue le chargement dans l'espace de travail du four de la charge du four constitué de ferraille et de matériau d'oxyde de carbone en morceaux, on amène de l'énergie électrique, du combustible, un agent de carburation, du flux et de l'oxygène gazeux, on effectuer la chauffe et la fusion de la charge du four avec des arcs électriques dans un bain métallique sans carbone, puis le coulage du métal et des scories du four. Avant de commencer la coulée, on charge simultanément dans la zone centrale du four une première portion de charge du four métallique et une partie de matériaux d'oxyde de carbone, et le reste des matériaux d'oxyde de carbone est introduit dans la charge du four pendant la coulée à une vitesse spécifique de chargement de