Raw material preparation. From the quarry to raw meal,
raw mill feed system is corrected by the adaptive mixture control. Setpoint Measurement time [2 days] Silo – current value Downstream of mill KST 95,0 94,5 94,0 93,5 93,0 92,5 92,0 91,5 91,0 90,5 Installed directly downstream of the raw mill, the POLAB® AOT takes raw meal samples at short intervals, fine-grinds them, analyses them with its,The cement kiln,However, new cement kilns are of the 'dry process' type. Dry process kilns. In a modern works, the blended raw material enters the kiln via the pre-heater tower. Here, hot gases from the kiln, and probably the cooled clinker at the far end of the kiln, are used to heat the raw meal. As a result, the raw meal is already hot before it enters the,Cement - Extraction and processing | Britannica,Cement - Cement - Extraction and processing: Raw materials employed in the manufacture of cement are extracted by quarrying in the case of hard rocks such as limestones, slates, and some shales, with the aid of blasting when necessary. Some deposits are mined by underground methods. Softer rocks such as chalk and clay can be dug directly by excavators.