Collectors for the froth flotation of mineral values

Details Collectors for the froth flotation of mineral values Collectors for the froth flotation of mineral values

B - Operations, Transporting

03

D

361/21

B03D 1/02 (2006.01) B03D 1/004 (2006.01) B03D 1/008 (2006.01) B03D 1/01 (2006.01) B03D 1/012 (2006.01) B03D 1/014 (2006.01)

Patent

CA 1265877

ABSTRACT The invention is a collector and process for recovering metal values from a metal ore by subjecting the metal ore, in the form of an aqueous pulp, to a froth flotation process in the presence of a collector wherein the collector comprises a compound corresponding to the formula Image where R is -CH2- , Image , -?-, or mixtures thereof, where R can occur in a random sequence; and n is an integer from 1 to 6 or ?R?n is ?CH2?mC? where m is an integer from 0 to 6; R1 and each R2 are independently C1-22 hydrocarbyl or a C1-22 hydro- carbyl substituted with one or more hydroxy, amino, phosphonyl, alkoxy, imino, carbamyl, carbonyl, thiocarbonyl, cyano, halo, ether, carboxyl, hydrocarbylimino groups, with the proviso that R2 can be a divalent radical with both valencies bonded directly to the N atom X is -S- , -O-, -?-R3 , -?-S- , Image , or -?O- R3 is H, a C1-22 hydrocarbyl or a substituted C1-22 hydrocarbyl radical; a is an integer of 0, 1 or 2; b is an integer of 0, 1 or 2; with the proviso that the sum of a and b equals 2 except when R2 is a divalent radical with both valencies bonded directly to the N atom, in which case, a=1 and b=0 or when ?R?n is ?CH2?mC ? in which case, a+b=0, and with the further proviso that when X is -?-S- , Image , or -?O- the carbonyl moiety is bonded to R1.

489953

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