Method of mfg. dry-moulded ceramic tiles - involves forming mass of granules or powders with stream tubes in mass upper part, before extracting by gravity at bottom

摘要

The method comprises the preparation of the powders, flowing the powders into a hopper, transfer of the powders to a pressing device, pressing the powders and kiln-firing. The powders are charged to the hopper and form a mass of material in granules or powder comprising streams (33b) which, at least in the upper part of the mass, are distinct from one another. Granules or powder are extracted by gravity from the bottom of the mass of material by means of separate, selected feed apertures (45a). The streams (33b) can be adjacent and flow down a substantially-vertical axis.