Quadro makes short work of powder dispersions
incorporate difficult to wet powders into a liquid more
efficiently, cutting the amount of powder required by a third and
dramatically reducing batch times.
This type of dispersion is typically used in the pharmaceutical industry to make granulation solutions, antacids, some antibiotics and cough syrups, suppositories, vitamin dispersions and tablet coatings.
The Quadro Ytron ZC Powder Disperser can get powders into dispersion in a single pass, claims the company. This is achieved via a rotor/stator that provides intense shearing of powders before they are added to the liquid phase. This produces homogenous dispersions that are completely free of lumps and 'fish-eyes', lumps of product with a hydrated skin but an unhydrated dry core, said the firm.
The device makes use of a vacuum that permits concentrations up to 25 per cent by weight to be generated with minimal air entrainment. And because the powder is completely hydrated, the yield is maximised and over-processing & wastage are eliminated compared to other in-line high shear/in-tank technologies, claimed Quadro.
The ZC will typically reduce batch times by 80 per cent and result in powder savings of up to 30 per cent. Three versions are available, from a small pilot model to one offering liquid throughputs of up to 455 litres per minute.
The system can handle some of the most difficult powders, including Carbopol, Pemulen, xanthan gum, cellulose gums, guar gum, Synthalen, Polygel, pigments, pectin, polymers, gums and other thickening agents.
