A process for preparing detergent particles containing step (I): mixing a
base particle for supporting a surfactant ((a) component), and a
surfactant composition ((b) component), under mixing conditions wherein
the (a) component does not substantially undergo breakdown, to give a
mixture; wherein the base particle is obtained by spray-drying an aqueous
slurry, wherein the mixing operation is carried out by using a mixer
containing agitation impellers, and where the mixer further contains
disintegration impellers, the mixing operation step (I) is carried out
without substantially rotating the disintegration impellers; and step
(II): mixing the mixture obtained in step (I) with 5 to 100 parts by
weight of fine powder, while substantially maintaining the shape of the
(a) component containing (b) component, to give detergent particles,
having a degree of particle growth of 1.3 or less, and a bulk density of
500 g/L or more.