When flocculating an aqueous suspension of suspended solids using a high molecular weight synthetic polymeric flocculant the shear stability of the flocs is increased if the polymeric material includes polymeric particles of below 10 .mu.m dry size. The flocculated solids can therefore be subjected to...http://www.google.es/patents/US4943378?utm_source=gb-gplus-sharePatente US4943378 - Flocculation processes
