Backset current area,the important factor of burner performance was discussed on the basis of carrying on numerical simulation to the cement kiln with three-channel burner by the model of.RNG k-ε.The model that backset current area was divided into center backset current area,interior backset current area, and other backset current area was compared in three-dimensional condition.The result showed that Speed / swirl of wind changed impact on backset current area than other factors.When swirling gas speed in...