Process to treat magnetite ore and collector composition
The present invention relates to a collector composition containing 80 to 100 wt % of at least one alkylethermonoamine, less than 20 wt % alkyletherdiamine, all wt % based on total weight of all amine components, and wherein the alkylethermonoamine contains between 60 and 93% isotridecyl(C13)etherpropylamine, 5 and 30% of isododecyl(C12)etherpropylamine, 0 and 10% of isoundecyl(C11)-etherpropylamine, 0 and 10% of isodecyl(C10)etherpropylamine, 2 and 10% tetradecyl(C14) etherpropylamine, all % being based on total weight of alkylethermonoamine and the use thereof in a process to treat iron ore.
1. A collector composition comprising 80 to 100 wt % of a mixture of alkylethermonoamines including:
between 60 and 93% by weight isotridecyl(C13)etherpropylamine,
between 5 and 30% by weight isododecyl(C12)etherpropylamine,
between 0 and 10% by weight isoundecyl(C11)etherpropylamine,
between 0 and 10% by weight isodecyl(C10)etherpropylamine, and
between 2 and 10% by weight tetradecyl(C14)etherpropylamine,
wherein all % are based on a total weight of the mixture of alkylethermonoamines.
2. The collector composition of claim 1 wherein the mixture of alkylethermonoamines includes between 60 and 80% by weight isotridecyl(C13)etherpropylamine, 10 and 30% by weight isododecyl(C12) etherpropylamine, 0 and 10% by weight isoundecyl(C11)etherpropylamine, 0 and 5% by weight isodecyl(C10)etherpropylamine, and 2 and 10% by weight tetradecyl(C14)etherpropylamine, wherein all % are based on a total weight of the mixture of alkylethermonoamines.
3. The collector composition of claim 1 wherein the degree of branching of each alkylethermonoamine is between 1.5 and 3.5.
4. The collector composition of claim 1 further comprising less than 20 wt % of an alkyletherdiamine based on a total weight of all amine components.
5. The collector composition of claim 1 further comprising additives selected from the group of depressants, surfactants, froth modifiers, neutralizing agents, or secondary collectors.
6. The collector composition of claim 5 wherein the neutralizing agents are acetic acid.
7. The collector composition of claim 5 wherein the secondary collectors are selected from the group of branched alkyl fatty alcohols and alkoxylated alkyl fatty alcohols.
8. The collector composition of claim 1 further comprising about 10% by weight of acetic acid.
9. The collector composition of claim 1 wherein the collector composition is free of an alkyletherdiamine.
10. A collector composition comprising:
acetic acid; and
a mixture of alkylethermonoamines including:
from 60 to 80% by weight of isotridecyl(C13)etherpropylamine based on a total weight of the mixture of alkylethermonoamines;
from 10 to 30% by weight of isododecyl(C12)etherpropylamine based on a total weight of the mixture of alkylethermonoamines; and
the remainder being isoundecyl(C11)etherpropylamine, isodecyl(C10)etherpropylamine, or tetradecyl(C14)etherpropylamine.
11. The collector composition of claim 10 wherein the acetic acid is present in an amount of about 10% by weight and the mixture of alkylethermonoamines is present in an amount of about 90% by weight, with all % based on a total weight of the collector composition.
12. A process to treat iron ore, the process containing a step of (froth) flotating in the presence of a collector composition of claim 1 .
13. The process of claim 12 wherein the iron ore is a magnetite ore.
14. The process of claim 13 wherein the process to treat magnetite ore is a process to enrich iron from silicates.
15. The process of claim 12 wherein the process is a reverse flotation process.
16. The process of claim 12 wherein the ore is an ore containing less than 15 wt % of silica based on a total solids weight in the ore.
17. Pulp comprising crushed and ground iron ore, the collector composition of claim 1 , and optionally flotation aids.