Study Of Processof Ironmaking System In LongGang

The process of BF iron making is a complex system engineering, which involves many factors such as material prepare, concentrate level, equipment transformation, technology improvement, BF intensified smelting and production management. Iron making system optimization is a subject which has been widely concerned and is in active exploration and practice by the engineering technicians in the field. Recently, based on its own advantages, LongSteel has a beneficial exploration and brave practice. Depend on tapping the latent power of system, improving technology, strengthening management, encircling the policy of high yield, high quality, low consume, long life in iron plant, improving coke quality and optimizing the BF burden, the concentrate level is increased. The economic and technical indexes such as utilization coefficient and comprehensive coke ratio are improved obviously by fetching in advanced equipment and technology, intensifying blast furnace operation, optimizing iron making process.This paper analyses every factors which influence the improvement of iron making system indexes, according to LongSteel iron making system status, based on production improvement measures and figures, comparatively analyses the status of system before iron in various periods of LongSteel, explore the direction which further optimize iron making system of LongSteel. From the research, we can make the following conclusion:1) Insisting on and depending on concentrate principle to making further improvement of the stability and quality of the raw material and fuel is the basic of stable smooth operation and further intensified smelting of LongSteel BF.2) Basing on the BF operation principles such as: overall blast, overall blow temperature, high top pressure, stable rich-oxygen air blowing, further improving the PCI rate, gas utilization and low silicon smelting is the guiding ideology of carrying out the low cast smelt of LongSteel BF. 3) Taking on BF as core, continuously introducing practical technologies, consolidating the equipment and outside BF management to creating good periphery conditions for BF production is also the guiding ideology of LongSteel iron making system.