Patent ID: 8609145

Claim:
A water-dispersible particle comprising: a struvite present in an amount ranging from 5% to 99.9% by weight of the total dry weight of the particle; and a binder component, present in an amount ranging from 1% to 95% by weight of the total dry weight of the particle, and the binder selected from the group consisting of calcium lignosulfanate, corn starch, bentonite clay, and corn syrup, the binder applied to fines of the struvite sized to less than 250 microns to agglomerate the fines to form the particle, a weight ratio of the struvite to the binder of about 19:1 to about 3:1, the particle having a mean particle domain size of 20 to 1,200 microns; the struvite and the binder component present in a form such that contact with water causes particle dispersion into more than 100 pieces in from 1 second to 1 hour of the contact with water.