Water cooled lance and lance manipulator have both replaced the hand lance.The lance manipulator is an efficient and economical tool to inject oxygen and solid materials into EAF.

• 水冷喷枪和喷枪机械手已取代了手动喷枪，喷枪机械手是一种向电弧炉喷氧和固体燃料高效而经济的方法。