LAUSR

With the rapid development of iron and steel industry, the issues of environment pollution and resource consumption have become prominent, which have drawn lots of concern in the world.1,2) In recent decades, in order to reduce greenhouse gas emission and energy consumption, there have been some innovative research projects, such as the Saving One Barrel of Oil per Ton (SOBOT), A New Roadmap for Transformation of Steelmaking Process in North America,3) the Ultra-low CO2 Steelmaking (ULCOS) in Europe4) and the CO2 Ultimate Reduction in Steelmaking Process by Innovative Technology for Cool Earth 50 (COURSE 50) in Japan.5) In the whole ironmaking and steelmaking process, the ironmaking process is the largest CO2 emission and energy consumption process. The efficient utilization of the gas product from ironmaking process will effectively reduce the CO2 emission and energy consumption, and thus has great significance for the sustainable development of the iron and steel industry. Top gas recycling (TGR) technology has been considered to be an effective method to increase the utilization of carbon and hydrogen, improve the performance of ironmaking reactor, and reduce the gas consumption.6) Because of the long development history of blast furnace ironmaking process, various types of TGR method have been proposed, such as Numerical Analysis on the Performance of COREX CGD Shaft Furnace with Top Gas Recycling