New Methods To Save Cement Kiln Fuel

Nowadays, a corporation can’t go any further if it doesn’t chase innovation. AGICO Group emphasis on innovation and can research and development independently a series of new cement kiln equipment, which brings a new chance to reforming of the mineral processing industry. The basic principle of saving cement kiln is to make sure that the fuel inside kiln can complete combustion.

Different Types Of Rotary Kiln
Different Types Of Rotary Kiln

Feeding Into Combustion-supporting Air

To make sure of the complete combustion of rotary kiln fuel, you have to feed into combustion-supporting air. The air split from the smoke and the raw materials after the combustion of cement kiln, during the airflow to cement kiln’s cold end, passes heat to moving materials, then the air is ejected to preheater from kiln tail. When the air inside the rotary kiln flows along with the kiln shell, air’s temperature, flow value, and the components will takes great change. So the flow speed value and air resistance will be so different from before. Under common circumstances, the kiln tail’s negative pressure represents kiln’s hydraulic resistance. On normal operation, the negative pressure of the kiln tail should be kept within a small range. If it appears ring phenomenon after entering the kiln, the negative pressure of the kiln tail will apparently rise. When the exhaust fan’s draft inducing capacity keeps on a certain level, the operator can estimate the working statement of cement kiln and preheater on the value of the negative pressure of the rotary kiln tail.

Rotary Kiln Line
Rotary Kiln LIne

Control The Air Flow’s Speed

The value of kiln airspeed influences the value of convection heating-exchange, heat-transfer efficiency, yield, and heating consumption, also it impacts the production of ash and materials consumption inside the kiln. When the flow speed is too quickly, owing to the large heat-transmission factor and little contact time between air and materials, the mass heat-transmission will reduce while the temperature of exhaust gas and heat-consumption raise. The airflow speed inside the kiln is generally be presented by kiln tailwind. It means that the proper wet kiln tail wind’s speed should be around 5.5m/s while the dry kiln should be10.5m/s.