Optimal cooling of the clinker
In the production of cement the raw flour is burned into clinker in long rotary furnces. The clinker has a temperature of over 1300 °C (2372 °F) after leaving the rotary furnaces and must then be cooled down to a temperature of about 200 °C (392 °F) for intermediate storage. To this end the clinker bed is cooled with a continuous stream of air. To make the cooling as effective as possible, it is necesary to determine the thickness of the clinker layer in the cooler. The high product temperatures make this a difficult measurement task.
VEGAPULS 68 in extremely high temperatures
Since microwaves propagate independently of the process temperature, the monitoring of the clinker bed is possible even at extreme temperatures. The radar sensor VEGAPULS 68 is continuously rinsed with cooling air via an air connection on the antenna system and can thus withstand process temperatures of over 1000 °C (1832 °F). The mounting assembly can also be cooled with rinsing air.
Monitoring the cooling air with VEGABAR 52
The VEGABAR 52 pressure transmitter is ideal for monitoring the air pressure in the clinker cooler. The robust ceramic measuring cell boasts high long-term stability and offers high functionality thanks to the plics concept.
