Steel as a material due to its properties has a wide application in the world. Since high temperatures are required for steel production, the production process is an expensive and demanding. Today, the electric arc furnace process for steel production is one of the most common in the world, so it is important to further improve the process with the aim of better efficiency and thus reduce costs and environmental impact. One of the big problems is the overhaul of the refractory part of the furnace, where large quantities of spent refractory material are created, which in itself is expensive and burdens the environment. It must also be pointed out that any stoppage for the overhaul process stops production. In this paper, the influence of two different ways of adding CaO and MgO lime to an electric arc furnace on the steel production process was investigated. One way is to add CaO and MgO lime to the basket together with the cartridge, i.e. steel scrap, and the other is to blow MgO using a new generation of burners directly into the melt. The consumption of materials, the chemical composition of slag and the time between repairs of the refractory wall of the furnace were monitored. The results indicated that the use of a newer generation of burners for blowing MgO lime directly into the melt contributes to a significant increase in the number of prepared melts in the electric arc furnace between two overhauls, and a different chemical composition of slag was obtained.