Process to treat magnetite ore and collector composition

Patent metadata

Field	Value
Publication number	US-10722904-B2
Application number	US-201716311288-A
Country	US
Kind code	B2
Filing date	Jul 5, 2017
Priority date	Jul 8, 2016
Publication date	Jul 28, 2020
Grant date	Jul 28, 2020

Abstract

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.

First claim

The invention claimed is:

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.

Assignees

• Akzo Nobel Chemicals Int Bv
• Nouryon Chemicals Int Bv

Inventors

• Widell Mikael Ivar
• Janiak John André
• Gustafsson Jan Olof
• Nordberg Henrik

Classifications

• B03D2201/02

  Collectors · CPC title

• B03D1/0043 Primary

  modified so as to contain a polyether group · CPC title

• B03D2203/04

  Non-sulfide ores · CPC title

• B03D1/02

  Froth-flotation processes · CPC title

• B03D1/01

  containing nitrogen · CPC title