DISPERSANTS During the manufacture of ceramic products, energy costs have a considerable share in the overall expenses of the final product. Deflocculating additives help to save water and energy resources, and to increase the production output. The slip properties (viscosity, thixotropic behaviour, structural viscosity, dilatancy, rheopexy and Newtonian flow behaviour) can be adjusted according to the customer’s requirements.
During the manufacture of ceramic products, energy costs have a considerable share in the overall expenses of the final product. Deflocculating additives help to save water and energy resources, and to increase the production output. The slip properties (viscosity, thixotropic behaviour, structural viscosity, dilatancy, rheopexy and Newtonian flow behaviour) can be adjusted according to the customer’s requirements.
The efficiency of the pressure casting process, as well as the cost effectiveness of conventional slip casting, are dependent on the output per unit time, which in turn depends on the casting rate. The use of filtration agents leads to the agglomeration of fine particles, and a more even de-watering of the casting slip is the result. A regular density and a uniform shrinkage allow the production of a homogeneous cast that is free from internal stresses. To a large extent, separation and sedimentation phenomena are prevented. Furthermore, filtration agents confer good interlocking at transitions from hollow casting to core casting, and better removal from the mould.
If a composition does not contain sufficient plastic raw materials with binding properties, the temporary binders can be utilised to increase the green and dry breaking strength of the body, as well as to improve the edge strength. This is necessary for the handling ability of the shaped articles in the subsequent technological processes and the safe intra-company transport. Temporary binders can be used for plastic shaping via extrusion, dry pressing as well as for the production of spray dried or build-up granulates.
