Cement kilns schematic

Countercurrent rotary cement kiln schematic. (From Baukal, C. E., ed.. Industrial Burners Handbook, Boca Raton, FL CRC Press, 2004.)... 

Figure 8 is a schematic of a cement kiln process. It has been demonstrated that existing cement kilns, when properly operated, can destroy most toxic organic chemical wastes, including PCBs, which can be converted to less noxious forms during normal cement kiln operation. 

Figure 10.6 Typical schematic of a cement kiln with preheater, precalciner, and grate cooler.

Different amonnts of exit gas or waste heat may arise from modem cement kilns eqnipped with cyclone preheaters. This will depend on the methods and machineiy employed. Fie. 1 schematically indicates the principal points of gas discharge from the rotary kiln process with precalcination. The waste gases differ with regard to qnantity, composition, temperature, pressure and dnst content. It is presnpposed that these gases cannot be directly ntilized in the bnming process. 

Wet process kilns. A schematic of the wet cement making process is shown in Fig. 8. 

---