METHOD FOR FORMING MOLDED BODIES FROM A GRANULAR MATERIAL, AND CORRESPONDING ROLLER PRESS

摘要

The invention relates to a method for forming molded bodies, wherein a feed flow of a granular material with a specifiable particle size distribution is fed to a roller press (1) with at least two rollers (2, 3) which rotate in opposite directions about a respective rotational axis (4), each of which comprises interacting recesses (13) for the pressing process, said rollers (2, 3) defining a roller gap (5) between each other. The roller press (1) is equipped with rigid rollers (2, 3). The design of the rigid rollers (2, 3) prevents a deflection of a loose roller due to the counter pressure of the granular material in the roller gap (5), thus leading to a consistent pressure in the roller gap (5). In this manner, molded bodies of a specifiable quality can be formed. In a preferred process, the feed flow of granular material to the rollers (2, 3) is kept at a constant level, for example by means of a constant rotational speed of the conveyor screw (9) as a result of a corresponding actuation of the conveyor screw drive (14) using the control unit (6). In particular, molded bodies can thus be produced in a high-pressure method without requiring an additional processing step after the agglomeration or the formation of the molded bodies. In particular, a drying process of the corresponding molded bodies, for example briquettes, can be omitted.