This paper introduces the present situation of ring formation in the production of metallurgical lime rotary kiln in Chaoyang Steel Co.,Ltd.,and compares the composition,wear rate and damage rate of limestone with the aspects of advanced enterprises,additionally analyzes and probes into the operation parameters and thermal regulation of rotary kiln,and clarifies the causes of ring formation.A series of measures have been taken against the causes of ring formation for the rotary kiln,which effectively control the rotary kiln ring,realize the stable production of rotary kiln,break through the production capacity of single equipment and realize the increase of output.

"> Rotary kiln, Damage rate, Wear rate, Thermal regulation, Ring formation,  , Preventive measures