Lab-scale Process Parameter Determination of a Two-stage DRI (direct reduced iron) Process Using Reformed COG (coke oven gas)

On the road to carbon neutrality, a great deal of attention is being paid emerging technologies such as DRI (direct reduced iron) process. This study proposes two-stage process using reformed COG (coke oven gas), and determined optimal parameters. The reduction carbonization Carajás iron ore used in field were examined by monitoring weight loss samples, EDS XRD measurements with respect reaction temperature operating time for different reducing environments. While completed 60 min at 800<sup>o</sup>C regardless environment, attainable only high hydrogen content gas. Thus, countercurrent scheme proposed justified, which containing flowed into 2<sup>nd</sup> stage operated subsequently directed 1<sup>st</sup> 600<sup>o</sup>C. initiated irrespective completion following fulfilled 40 under environment. An equilibrium analysis supported that cracking CH<sub>4</sub> graphite leads formation CO from CO<sub>2</sub> successive Fe<sub>3</sub>C Fe. possible presence . It also showed too or low environments are not desirable accomplish expected be provide an effective guideline optimizing similar processes.