Abstract: The main heat in the cement production process is wasted in the kiln end preheater exit gas to take away the heat, the kiln system surface to the environment through the radiation, the convection way conduction heat, the clinker clinker cooler take away the heat and the cooler clinker away Heat loss and so on.It is an important measure to improve the energy efficiency of cement plant by studying the heat dissipation of the surface of the cement preheater and the heat recovery technology of the rotary kiln.In order to use new energy cement kiln system more efficient energy audit analysis.In this paper, the energy utilization and loss of the precalciner kiln system are analyzed from the view of energy balance.The influence of the refractories on the heat loss of the preheater tube and the recovery of the residual heat of the rotary kiln by the secondary kiln shell is studied.The energy of cement kiln system is improved.

Key words: energy balance;refractory material;secondary kiln;thermal efficiency