Regarding the fact that the new and modern electric arc furnaces to decrease the level of slag penetration into the steel molten are equipped with the eccentric bottom tap-hole (EBT) or the bottom discharge mechanism, in such furnaces the discharge case is perpendicularly located at the furnace floor. To prevent the discharge system destruction and molten penetration during the fusion and refining stage in the furnace, at the time when the EBT is closed and before starting reloading, the metallic charge of the molten discharge cavity is filled from the bottom with a type of sand like the olivine sand. The EBT olivine sand is used as the electric arc furnace orifice sand which is discharged from the bottom. This sand, through the formation of a sintered and concentrated layer, prevents penetration of molten to the next sand layers, and finally, at the time of opening based on the static pressure caused by molten pressure, this layer is broken, and the furnace is discharged. Olivine is a Grayish sandy odorless material, which is free flowing when dry. It is insoluble in water and any common organic solvents.