Patent ID: 6274544
Filing Date: 2001-08-14
Classification: C11D

Abstract:
A process for the production of a granular detergent product, the process comprising spraying droplets of a liquid binder to contact a particulate solid starting material in a low-shear granulator, wherein:the maximum d.sub.3,2 average droplet diameter of the liquid binder is 200 .mu.m, andthe d.sub.3,2 average droplet diameter of the liquid binder is not greater than 10 times the d.sub.3,2 average particle diameter of that fraction of the total solid starting material which has a d.sub.3,2 particle diameter of from 20 .mu.m to 200 .mu.m, provided that if more than 90% by weight of the solid starting material has a d.sub.3,2, average particle diameter less than 20 .mu.m then the d.sub.3,2 average particle diameter of the total solid starting material shall be taken to be 20 .mu.m and if more than 90% by weight of the solid starting material has a d.sub.3,2 average particle diameter greater than 200 .mu.m then the d.sub.3,2 average particle diameter of the total solid starting material shall be taken to be 200 .mu.m,the process resulting in the granular detergent having not more than 10% by weight of granules with a diameter above 1.4 mm, whereina first portion of the liquid binder is admixed with solid starting material in a pre-mixer to form a partially granular solid material and then a second portion of the liquid binder is sprayed to contact the partially granular solid material in the low-shear granulator to effect complete granulation.