Process of concentrating

Claim 1

IN A PROCESS FOR PROGRESSIVELY VARYING THE RELATIVE PROPORTIONS OF CONSTITUENTS A, B OF A FLUID MIXTURE AB IN A SERIES A, B, C, D, OF SEPARATION TREATMENT AND A SEPARASTAGE COMPRISING A CONDITIONING TREATMENT AND A SEPARATION TREATMENT, THE STEPS COMPRISING PRE-CONDITIONING SAID MIXTURE TO RESPOND TO THE ACTION OF AN AGENT ADAPTED TO SEPARATE AND RETAIN A PORTION OF THE MIXTURE, SUBJECTING SAID PRE-CONDITIONED MIXTURE TO THE ACTION OF SAID AGENT IN A STAGE A TO SEPARATE OUT AND RETAIN A PORTION OF SAID CONSTITUENTS A, B IN WHICH THE AMOUNT OF CONSTITUENT B IS REDUCED RELATIVE TO CONSTITUENT A AND SO THAT THE RESIDUAL UNRETAINED PORTION OF SAID MIXTURE CORRESPONDINGLY HAS CONSTITUENT A RELATIVELY DECREASED WITH RESPECT TO CONSTITUENT B, SUBJECTING SAID RESIDUAL UNRETAINED PORTION FROM STAGE A TO THE CONDITIONING TREATMENT OF STAGE C SERIALLY TWO POSITIONS FURTHER ALONG IN THE SYSTEM AND APPLYING THE SAID PORTION SO CONDITIONED TO MATERAL PREVIOUSLY SEPARATED AND RETAINED AS A MIXTURE OF CONSTITUENTS A AND B AT SAID STAGE C TO REMOVE SAID MATERIAL THEREFROM CONDITIONING THE RESULTANT MIXTURE OF CONSTITUENTS A AND B FOR SEPARATION AND RETENTION IN STAGE B BETWEEN STAGES A AND C AND SUBJECTING SAID MIXTURE TO SAID SEPARATION AND RETENTION BY AN AGENT IN STAGE B TO SEPARATE OUT AND RETAIN A PORTION OF SAID MIXTURE CONSTITUENTS A, B IN WHICH THE AMOUNT OF CONSTITUENT B IS REDUCED RELATIVE TO CONSTITUENT A AND SO THAT THE RESIDUAL UNRETAINED PORTION OF SAID MIXTURE CORRESPONDINGLY HAS CONSTITUENT A FURTHER RELATIVELY DECREASED WITH RESPECT TO CONSTITUENT B, SUBJECTING SAID RESIDUAL UNRETAINED PORTION FROM STAGE