Abstract：The bellless top is widely used in ironmaking blast furnace because of its superiority. It has been monopolized by the PW bellless top equipment in the world for half a century. To break the foreign patent monopoly and blockade of the technology and equipment of the bellless top, professor YAN Yunjin of the University of Science and Technology Beijing started to study the bellless top equipment since 1975, and completed our first set of experimental research and design of industrial furnace top equipment. And then he developed the "water cooling water sealed type" bellless top, which reached the international advanced level. At the same time, the "Sangshi" bellless top, developed by the group of professor SENG Quansong was also applied in small and medium blast furnaces in China. The breakthrough of the domestic bellless top equipment used in large blast furnace was the new equipment BFT（BCQS）developed by Qinye metallurgical research and development, which was used in the large blast furnace in Pohang, Vietnam and the static and Baosteel Zhansteel. It was indicated that the bellless top with our own intellectual property rights went to the world.
陆明春. 无料钟炉顶的发展及秦冶炉顶设备的应用特点[J]. 中国冶金, 2018, 28(8): 71-75.
LU Mingchun. Development of bellless top and application characteristics of Qinye′s top equipment[J]. China Metallurgy, 2018, 28(8): 71-75.
2018, Vol. 28 
