Abstract:
The invention relates to a process for enriching an iron mineral from a silicate containing iron ore by inverse flotation comprising the addition of a collector or collector composition comprising at least one of the compounds of formulae RO-X-NH2 (Ia); RO-X-NH3 + Y- (Ib);RO-X-NH-Z-NH2 (IIa); and RO-X-NH-Z-NH3 + Y- (IIb), in which X is a linear or branched aliphatic alkylene group containing 2 to 6 carbon atoms; Z is a linear or branched aliphatic alkylene group containing 2 to 6 carbon atoms; Y- is an anion; and R is an aliphatic group of the formula (I) C5H11CH(C3H7)CH2- (I) wherein the C5H11 moeity of the aliphatic group of the formula (I) comprises 70 to 99% by weight n-C5H11-, and 1 to 30% by weight C2H5CH(CH3)CH2- and/or CH3CH(CH3)CH2CH2-.
Abstract:
Compounds of the formulae: RO-X-NH2 (Ia); RO-X-NH3 + Y- (Ib); RO-X-NH-Z-NH2 (IIa); and RO-X-NH-Z-NH3 + Y- (IIb), in which X is an aliphatic alkylene group containing 2 to 6 carbon atoms; Z is an aliphatic alkylene group containing 2 to 6 carbon atoms; Y- is an anion; and R is an aliphatic iso C13H27- group with average branching degree ranging from 1.5 to 3.5. The compounds are particularly suitable as flotation collectors for enriching an iron mineral from a silicate-containing iron ore.
Abstract:
La invención se refiere a un proceso para enriquecer un mineral de hierro a partir de un mineral de hierro que contiene silicato por flotación invertida que comprende la adición de un recolector o composición recolectora que comprende por lo menos uno de los compuestos de las fórmulas RC(O)N(Z-O-X-NH2)2 (la); RC(O)N(Z-O-X-NH2)2HY (Ib); en donde es un grupo alquileno alifático que contiene 2 a 6 átomos de carbono; Z es un grupo alquileno alifático que contiene 2 a 6 átomos de carbono; Y es un anión; y R es una porción de hidrocarbilo saturado o insaturado, lineal o ramificado, alifático o aromático teniendo entre 7 y 23 átomos de carbono La invención se refiere a los compuestos novedosos de conformidad con las fórmulas (la) y (Ib), las composiciones que comprenden dichos compuestos y el uso de los compuestos y formulaciones como recolectores para enriquecer mineral de hierro.
Abstract:
La ¡invención se refiere a un proceso para enriquecer un mineral de hierro a partir de un mineral de hierro que contiene silicato por flotación invertida que comprende la adición de un recolector o composición recolectora que comprende por lo menos uno de los compuestos de las fórmulas RO-X-NH2 (la); RO-X-NH3Y (Ib); RO-X-NH-Z-NH2 (IIa); y RO-X-NH-Z-NH3Y (lIb), en donde X es un grupo alquileno alifático que contiene 2 a 6 átomos de carbono; Z es un grupo alquileno alifático que contiene 2 a 6 átomos de carbono; Y es un anión; y R es un grupo ahifático de la fórmula (I) C5H11CH(C3H7)CH2- (I) en donde la porción de C5H11 del grupo ahifático de la fórmula (I) comprende 70 a 99% en peso de n-C5H11-, y 1 a 30% en peso de C2H5CH(CH3)CH2- y/o CH3CH(CH3)CH2CH2-.
Abstract:
The alkoxylate mixtures comprise alkoxylates of the formula (I) C 5 H 11 CH(C 3 H 7 )CH 2 O(A) n (B) m H (I) where A is ethyleneoxy, B is C 3-10 -alkyleneoxy or mixtures thereof, where groups A and B may be present in random distribution, alternately or in the form of two or more blocks in any order, n is a number from 0 to 30, m is a number from 0 to 20 n+m is at least 1 where 70 to 99% by weight of alkoxylates A1 in which C 5 H 11 has the meaning n-C 5 H 11 , and 1 to 30% by weight of alkoxylates A2 in which C 5 H 11 has the meaning C 2 H 5 CH(CH 3 )CH 2 and/or CH 3 CH(CH 3 )CH 2 CH 2 , are present in the mixture.
Abstract:
The alkoxylate mixtures comprise alkoxylates of the formula (I) C 5 H 11 CH(C 3 H 7 )CH 2 O(A) n (B) m H (I) where A is ethyleneoxy, B is C 3-10 -alkyleneoxy or mixtures thereof, where groups A and B may be present in random distribution, alternately or in the form of two or more blocks in any order, n is a number from 0 to 30, m is a number from 0 to 20 n+m is at least 1 where 70 to 99% by weight of alkoxylates A1 in which C 5 H 11 has the meaning n-C 5 H 11 , and 1 to 30% by weight of alkoxylates A2 in which C 5 H 11 has the meaning C 2 H 5 CH(CH 3 )CH 2 and/or CH 3 CH(CH 3 )CH 2 CH 2 , are present in the mixture.