Comprehensive longevity technology of Baosteel No. 3 BF

Baosteel No. 3 BF has been running smoothly and stably for more than 18 years, and has become China's longest-life blast furnace, producing many advanced economical and technical indexes. Comprehensive longevity technology has been developed in terms of the design, operation, and maintenance of the No. 3 BF during the prolonged period of research and practice. To obtain stable and smooth operation and to prolong the campaign life, the following measures have been taken: appropriate designing of the furnace profile and cooling system; improving raw material quality and optimizing the operating system; improving the cooling intensity and water quality; and adopting various longevity maintenance measures, to ensure the safety of the body and the hearth temperature.