Method for operating an agitator bead mill and agitator bead mill therefor

摘要

A method for dry operation of an agitator bead mill, with a mill housing that includes a grinding chamber, in which a rotatable agitator shaft extends horizontally between an input side and an output side and in which grinding media are situated. An output gas is fed into the grinding chamber on the output side, goes together with ground grist through the separation system radially with respect to the transport direction, and thus leaves the grinding chamber together with ground grist through the separation system and onward through the product output. Also disclosed is an agitator bead mill for executing the method, such that the separation system has a static sieve with a free perforated surface that is chosen in such a way that the pass-through speed of the gas leaving the agitator mill through the separation system and the product outlet amounts approximately to 10 m/s to 30 m/s.

主权项

1. A method for dry operation of an agitator bead mill, with a mill housing that encloses a grinding chamber, in which a rotatable agitator shaft extends horizontally between an input side and an output side and in which grinding media are situated, said method including the steps of:
on the input side, feeding grist that is to be ground into the grinding chamber through a product inlet, transporting the grist that is to be ground from the input side along the agitator shaft in a transport direction parallel to the axial direction of the agitator shaft to the output side and thereby grinding it by the grinding media, the ground grist exiting from the grinding chamber on the output side, by going radially with respect to the transport direction through a separation system that detains the grinding media, the ground grist then leaving the agitator bead mill through a product outlet situated downstream from the separation system, and feeding an output gas into the grinding chamber on the output side in the area of the separation system and at least partly against the transport direction, said output gas going, together with ground grist, through the separation system radially with respect to the transport direction, and thus said output gas leaving the grinding chamber together with ground grist through the separation system and onward through the product output.