Process and apparatus for the production of ceramic products

摘要

Prodn. of ceramic products, esp. thin-walled pipes, comprises preparing a ceramic mold consisting of a plastic component, esp. a clay mineral material, and an inert component, esp. a schamotte material, in which the mould is isostatically pressed and pressed into a moulding and then calcined. The improvement is that the prepn. process to form the mould comprises: (a) comminuting an inert component to an ave. particle size (d50) of 0.2-0.5 mm; (b) likewise comminuting the plastic component to an ave. particle size (d50) of 1-5 microns; (c) mixing the inert component with water; (d) intensively mixing the plastic component with the inert component; (e) encapsulating and granulating the inert component completely in the plastic component; and (f) drying the damp mould to a moisture of 4-8%. An appts. for carrying out the above process is also claimed.