A PRECALCINER CEMENT KILN AND MIXING HIGH TEMPERATURE GASES IN MINERAL KILNS

摘要

A method is described for reducing NO x emissions and improving energy efficiency during mineral processing in a rotary kiln. The method comprises injection of air with high velocity/high kinetic energy into the kiln to reduce or eliminate stratification of kiln gases. The method can be applied to mix gases in a rotary kiln vessel or in a preheater/precalciner vessel.