Process of reducing the consistency of

Claim 1

IN A SINK-FLOAT SEPARATION PROCESS IN WHICH AN AQUEOUS SUSPENSION OF A HEAVY SOLID IS EMPLOYED AS A HEAVY MEDIUM FOR SUCH A SEPERATION, THE STEP WHICH COMPRISE INCORPORATING AN ALKYL AMINO COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALKYL AMINES OF THE FORMULA CNH2N+1NH2, IN WHICH N IS AN INTEGER BETWEEN 6 AND 18 AND THEIR SALTS IN THE AQUEOUS SUSPENSION OF THE HEAVY SOLID EMPLOYED FOR SUCH SEPERATION MEDIUM TO REDUCE THE APPARENT VISCOSITY THEREOF, THE QUANITY OF HEAVY SOLID IN SUCH SUSPENSION BEING SO HIGH THAT IN THE ABSENCE OF SAID AMINO COMPOUND ITS APPARENT VISCOSITY WOULD BE TOO GREAT FOR USE AS A SINK-FLOAT SEPERATION MEDIUM.