Role of the clogging effect in the slip casting process

Production of Al-rich sludge-containing ceramic bodies by different shaping techniques

“…These characteristics can be attributed to the fine particle size of Al-rich sludge, which combined with the presence of soluble salts, leads to poor dispersion, and a trend for suspension structuration when at rest, gives rise to density and humidity gradients in the green cakes and consequently, to differential shrinkages. The possibility for the fine particles to clog the cake or even the porosity of the mold cannot be discarded, which will further deteriorate the slip casting performance [15,16]. With the other suspensions, it was possible to increase the solids loading up to 68 wt.% (C2) or 70 wt.% (C3) by increasing the amounts of deflocculant to 1 wt.% (C2), or to 5-6 wt.% (C3).…”

Colloidal processing of ZnO using thermosensitive poly(N-isopropylacrylamide) as a coagulating agent

“…The resulting samples often have defects such as density gradients, heterogeneously distributed soluble species (e.g. binders or inorganic ions) [7], and particle segregation [8]. The other processing mechanism does not remove the liquid; rather, the fluid suspension is consolidated into a fixed body by flocculation or gelation.…”

Bio-calcium sulfate preparation from duck eggshell via chemical reaction process

“…The physical properties of the raw duck eggshell and calcium sulfate samples, i.e. particle size and shape, specific surface area, true density, solubility, etc., are important factors for calcium sulfate formation and applications [6,29,30].…”