Via the analysis on lime quality and changes on kiln conditions during trial producation, some reasonable process parameters are determined preliminarily.

This paper analysis the common technical malfunctions problems for the new dry rotary kiln,such as how to stable decomposition of limestone and burning temperature which brought about over burning clinker and under burnt clinker, established one intellectualized control system of the new type try-process burner was put forward.

The main topic of this paper discusses the problems existing in the system of pre-decomposing kiln, and then shows some improving measures of the problems and effect of these measures.