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(11)    Patent No :    AP 1920   

(73) Applicant(s)CYTEC TECHNOLOGY CORP., 300 Delaware Avenue,       
            Wilmington, DE 19801,       
(21)    Application No :    AP/P/2005/003271           
                   
(22)    Filing Date :    01.10.2003    United States of America       
(24)    Date of Grant &    15.11.2008           
                   
(45)    Publication :

(30)  Priority Data    (72) Inventors

    (33) Country    (31) Number    (32) Date    ROTHENBERG Alan S, United States of America   
    US    10/270,754    15.10.2002    MAGLIOCCO Lino G, United States of America   
    US    10/271,221    15.10.2002       
                (74) Representative   
(84)    Designated State           
    ZM   ZW            HONEY & BLANCKENBERG   
                   
(51)    International    Classification    B03C 1/00 (2006.01)    B03D 1/008 (2006.01)   
            B03D 1/01 (2006.01)       

(54)    Title

Process for the beneficiation of sulfide minerals.

(57)    Abstract

Froth flotation processes, useful for beneficiating base metal mineral values from metal sulfide ore, utilize a collector comprising an

N-butoxycarbonyl-O-alkylthionocarbamate selected from the group consisting of N-butoxycarbonyl-O-methylthionocarbamate,

N-butoxycarbonyl-O-etkylthionocarbamate, N-butoxycarbonyl-O-propylthiononocarbamate, N-butoxycarbonyl-O-buylthionocarbamate, N-butoxycarbonyl-O-pentylthionocarbamate, and N-butoxycarbonyl-O-hexylthionocarbamate.


(56)  Documents Cited :    US 4 584 097 A

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