Filter dryer

Filter dryers are ideally suited for filtration of suspensions with low or even high solids content and further treatment of the resulting filter cake.

Process steps such as slurrying, washing and drying can therefore be carried out in the same machine.

The liquid is separated mechanically using vacuum or overpressure or a combination of both. After the mechanical separation of the liquid portion, the residual moisture is thermally evaporated to achieve a high degree of drying of the dry substance. For this purpose, the nutsche containers and often also the agitator are designed to be heated. A special agitator improves the efficiency of filtration and drying and enables the solids to be discharged mechanically.

ZETTL (vacuum/pressure) nutsches consist of a self-contained, vacuum-tight and heated housing. Filter media with different mesh widths/pore sizes can be attached to the filter base.