Abstract
The primary technology of steel making in the foundry is a basic step to obtain a good quality of molten steel: with proper deoxidation, with low gases quantity and the control of non-metallic inclusions. These processes are discussed in detail through oxidation of elements and then during deoxidation in reduction period and in the ladle.
Keywords: Basic arc furnace, Ellingham-Richardson diagram, Furnaces in steel foundry, Melting processes, Reactions in oxidation and refining periods.