Novel cement produced with dry method kiln preheats predecomposition system

The utility model discloses a novel cement produced with dry method kiln preheats predecomposition system, including a plurality of grades of pre -heaters, the air -supply line of each grade pre -heater and the air outlet intercommunication of next stage pre -heater, so connect gradually up to last one -level pre -heater, the air -supply line of last one -level pre -heater and dore furnace top intercommunication, dore furnace bottom and kiln tail smoke -box intercommunication in other pre -heaters except last one -level pre -heater, have the discharge opening of at least one pre -heater bottom to install meticulous feed divider, and meticulous feed divider's discharging pipe divides into two the tunnel, all the way with the air -supply line intercommunication of pre -heater at the corresponding levels, and the air -supply line intercommunication of another way and next stage pre -heater. The beneficial effect of the utility model: it installs meticulous feed divider, steerable branch material volume and number of cycles additional to divide at needs under the pre -heater of expecting, can make the outlet airflow of this system temperature reduce under the condition that does not increase former pre -heater progression, can increase solid gas through meticulous branch material and circulation heat transfer and compare, improve heat exchange efficiency, realize the raising the output.