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Single off-gas outlet devised by one-step COREX shaft furnace will ultimately lead gas distribution to segregate,furthermore the distribution of powder on charge level is non-uniformity.DPM-CFD model was employed to simulate the pellet minus sieve powder motion in the burden distribution process,in order to quantitative description the non-uniformity distribution.The results showed that,the non-uniformity distribution is increasing with the melting rate increased.The powder segregates to the fourth quadrant where off-gas outlet lies is 2.4 or 2.5 fold of any other quadrant,while the melting rate is 130 t/h or 180 t/h.The best method to resolved the problem adds an symmetry off-gas outlet.
Single off-gas outlet devised by one-step COREX shaft furnace will ultimately lead gas distribution to segregate, the distribution of powder on charge level is non-uniform. DPM-CFD model was employed to simulate the pellet minus sieve powder motion in the burden distribution process, in order to quantitative description the non-uniformity distribution. The results showed that, the non-uniformity distribution is increasing with the melting rate increased. The powder segregates to the fourth quadrant where off-gas outlet lies is 2.4 or 2.5 fold of any other quadrant, while the melting rate is 130 t / h or 180 t / h. The best method to resolve the problem adds an symmetry off-gas outlet.