PROCESS FOR PREPARING DETERGENT COMPOSITIONS

摘要

A granular detergent composition or component having a bulk density of at least 650 g/l is prepared by mixing a hydratable compound, e.g. anhydrous sodium carbonate, with a spray-dried powder, preferably in a high-speed mixer, and also adding water to the spray-dried powder, preferably in an agglomeration step carried out in a moderate-speed mixer downstream of the high-speed mixer. The agglomeration step may be carried out in the presence of a nonionic surfactant. After the agglomeration step, the resultant granular material may be aged in a fluidised bed apparatus. The product has improved dispensing and solubility properties.