Patent ID: 6821437
Filing Date: 2004-11-23
Classification: B03B,B03D,B24B,B28D,C10M,Y02P

Abstract:
Method of separating a machining suspension into fractions, which consists of a cutting fluid in which at least abrasive grains as well as attrition material are dispersed, comprising the following steps:wet classification of said machining suspension by application of a liquid processing aid, said liquid processing aid being selected to form a mixture with said cutting fluid, which mixture forms a stable suspension with said attrition material persisting over a plurality of weeks without complete sedimentation of the attrition material; discharge of one or several fractions containing abrasive grains and of cutting fluid and said processing aid wherein metal attrition material from a machining tool is present in said separated fraction or fractions containing abrasive grains; subjecting said fractions containing abrasive grains and metal attrition material to post-treatment by a magnetic separating method for separation of the metal attrition material; and drying said separated fraction(s) containing abrasive grains and metal attrition material and condensing any liquid processing aid evaporated during the drying operation.