METHOD OF PREPARING SEED SLURRY Russian patent published in 2005 - IPC

FIELD: sugar industry.

SUBSTANCE: method envisages formation of crystallization sites in supersaturated sugar-containing syrup. Crystals are grown until crystal size 1.2-1.8 μm is reached at continuous cooling velocity and stirring, after which crystals are grown to specified size at increased cooling velocity from 1.0 to 7-11^оС/h. Crystal slurry is separated from mother liquor using precipitating centrifugation. Remaining crystallization sites are grown to indicated size as above and then to specified size at cooling velocity increased from 0.9 to 5-7^оС/h followed by separation of crystals from mother liquor. The latter is once more subjected to crystallization at continuous cooling velocity and then at cooling velocity increased from 0.9 to 1.8-4.0^оС/h. Thus obtained crystal slurries are supplemented by surfactant to prevent crystal agglomeration and combined to obtain seed slurry.

EFFECT: increased crystal output due to multistep exhaustion of mother liquor, increased monodispersity of seed slurry crystals, and prevented recrystallization and agglomeration and thereby prolonged storage time of slurry and simplified dosage into vacuum apparatus.

2 dwg, 2 ex