Abstract: An improved oxygen blowing/fuel burner lance assembly for introducing, at selected times, a flow of oxygen and/or carbonaceous fuel material, such as fine-grained carbon or hydrocarbon gas (e.g., natural gas and the like), into an electric furnace vessel. The lance assembly includes a housing portion, a straight barrel having a first and connected to the housing portion and a second end connected to a lance tip. The lance tip includes a nozzle structure having at least one oxygen injection nozzle and at least one carbonaceous material injection nozzle which together define a burner assembly for dispensing a combined flow of carbonaceous fuel and oxygen from the lance which may be ignited to produce a flame for preheating a scrap charge in an electric furnace vessel.