METHOD OF MIXING HIGH TEMPERATURE GASES IN MINERAL PROCESSING KILNS.

摘要

A method is described for reducing NO_x emissions and improving energy efficiency during mineral processing in a rotary kiln (10). The method comprises injection of air with high velocity/high kinetic energy into the kiln (10) to reduce or eliminate stratification of kiln gases. The method can be applied to mix gases in a rotary kiln vessel (12) or in a preheater/precalciner vessel.