Loesche Gmbh

Franz Poeschl

In a mill drying plant with a roller grinding mill and preferably in a cement production plant operated in compound with a clinker burning process and having a kiln fan and a fan downstream of a filter, a mill fan is connected upstream of the roller grinding mill as a further fan. This makes it possible to overcome the resistance of the roller grinding mill blade ring and to force the pressure zero point into the roller grinding mill, so that there is a low vacuum above the blade ring in the milling and classifying chamber and in the filter.

Method for milling raw materials

In a mill drying plant with a roller grinding mill and preferably in a cement production plant operated in compound with a clinker burning process and having a kiln fan and a fan downstream of a filter, a mill fan is connected up-stream of the roller grinding mill as a further fan. This makes it possible to overcome the resistance of the roller grinding mill blade ring and to force the pressure zero point into the roller grinding mill, so that there is a low vacuum above the blade ring in the milling and classifying chamber and in the filter.

Milling plant and method for milling raw materials

The invention relates to a dynamic roller mill air classifier, which is provided in integrated manner over a roller mill. As existing air classifiers suffered from certain disadvantages with respect to the specific energy requirement, the invention makes it possible to reduce the latter. The air classifier is designed as a downflow classifier, which classifies in an efficient manner with reduced flow rates.

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Düsseldorf, Germany

Franz Poeschl