According to fuel and and operation condition in chongqing iron and steel group corporation , many kinds of advanced technologies are adopted , such as closed loop soft water circulation cooling , copper cooling stave , bell - less top with central charging hopper , carbon bricks combined furnace bottom with ceramic cup , russia top burner type hot air stove , duplex preheating of hot air stove , and nut coke charging 摘要根据重钢高炉的原燃料条件和操作条件，设计了重钢四高炉扩容性易地大修工程，采用了全软水密闭循环冷却、铜冷却壁、串罐式无料钟炉顶、炭砖陶瓷杯复合炉缸、俄罗斯“卡鲁金”顶燃式热风炉、热风炉双预热、焦丁入炉等先进技术。
