Process for preparing starting materials to form a ceramic composition
OwnerHans P. H. Pfuhl, Dieter P. H. Agthe +1inventors
InventorsHans P. H. Pfuhl, Dieter P. H. Agthe, Diethard G. Kreiner
Life of this patent
Estimating the term…
Abstract
The process and installation for carrying out the process of preparing starting materials to form a ceramic composition by passing them through a crusher, storing them in silos, until different proportions are fed to a mixer and then to an intermediate silo from which the materials are pulverized, dried cleaned of ferrous impurities and passed through a spray tower where recycled and starting material are mixed and moisture content controlled depending on whether the ceramic mass or composition to which the granulated material is to be processed must be suitable for casting, kneading or pressing.
Claims9
A process of producing mixed heterogeneous agglomerates of ceramic materials for ceramic compositions to be cast, kneaded or pressed, which agglomerates constitute wet interior portions enveloped by solid material dry at the surface, said heterogeneous agglomerates comprising about 6-25% water, the process comprising:
- suspending finely ground ceramic starting materials in a gaseous stream and spraying the gaseous-solids mixture in a turbulent floating state uniformly over the cross-section of a spraying zone;
- spraying droplets of dissolved or suspended recycling material constituting a water slurry of ceramic particles, from further processing of the ceramic composition, into said spraying zone to contact said gaseous-solids mixture in the turbulent state;
- thereby enveloping said droplets with said finely ground ceramic material and forming said mixed heterogeneous agglomerates having dry surfaces;
- and
- maintaining the ratio of finely ground ceramic material to droplets of slurry to ensure that said heterogeneous agglomerates comprise about 6-25% water.
Dependencies are inferred from the claim text.