Conversion of Existing Cement Kilns to Flash Calciners

Contemporary cement kilns equipped with a suspension preheater provide for efficient operation with the lowest specific heat consumption. The incorporation of a flash calciner reduces the fuel requirement of the rotary kiln, thereby improving refractory life and reducing nitrogen-oxide emissions. The benefits of suspension preheat and flash calcination can be achieved in existing wet or dry process plants. Such modifications can increase kiln production while reducing the specific heat consumption. Several existing long wet and long dry kilns and suspension preheater kiln systems have been modified to flash calciner configurations.