From the aspects of the case to see the size of the incoming Rotary kiln, after the actual inspection and experiences from which we learned from the coal feeding tube seems, there are circumstances under coal to explain the situation of their incoming.It seems that the material size is minimal deviation from the flames did not feed the bottom edge, straight edge watching shun material when scrolling, you can see the red clinker behind dark gray stuff constantly rolling, watch the fire works called it raw material or shadows.Normally, the shadow gradually moves forward, consistent width, thickness uniformity, often in the middle of the flow before the flame.When the shadows from the black part of the flame at high temperatures becomes red, raw material that becomes clinker burning.