# US 2019/0314828 A1 · Process to treat magnetite ore and collector composition

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- Number: US 2019/0314828 A1
- Document ID: US20190314828A1
- Status: Published application
- Kind: A1
- Application number: 16/314,709
- Filed: 2017-07-05
- Published: 2019-10-17
- Earliest claimed: 2016-07-08
- Assignees: Akzo Nobel Chemicals International B.V.
- Applicants: Akzo Nobel Chemicals International B.V.
- Inventors: Mikael Ivar WIDELL; John André JANIAK; Jan Olof GUSTAFSSON; Henrik NORDBERG
- Web page: https://patentgrep.com/patent/US20190314828A1

## CPC

- B03D 1/0043: {modified so as to contain a polyether group}
- B03D 1/01: containing nitrogen
- B03D 1/02: Froth-flotation processes
- B03D 2201/02: Collectors
- B03D 2203/04: Non-sulfide ores
- B03D: FLOTATION; DIFFERENTIAL SEDIMENTATION (sedimentation in general B01D21/00; in combination with other separation of solids B03B; sink-float separation B03B5/28; detergents, soaps C11D)

## Abstract

The present invention relates to a process to treat magnetite ore containing less than 15 wt % of silica on total ore, the process containing a step of (froth) flotating in the presence of a collector composition that contains 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 is an alkylethermonoamine with a degree of branching higher than 1, the alkyl containing 11 to 17 carbon atoms, and further relates to the collector composition that can be used in the process.

## Claims

### Claim 1

Process to treat magnetite ore containing less than 15 wt % of silica on total ore solids, the process containing a step of (froth) flotating in the presence of a collector composition that contains 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 is an alkylethermonoamine with a degree of branching higher than 1, the alkyl containing 11 to 17 carbon atoms.

### Claim 2 (depends on 1)

Process of claim 1, wherein the alkylethermonoamine contains between and 100 wt % isotridecyl(C13)etherpropylamine, 0 and 50 wt % of isododecyl(C12)etherpropylamine, 0 and 30 wt % of isoundecyl(C11)etherpropylamine, 0 and 30 wt % of isodecyl(C10)-etherpropylamine, 0 and 30 wt % tetradecyl(C14)etherpropylamine, all wt % being based on total weight of alkylethermonoamine.

### Claim 3 (depends on 1)

Process of claim 1 wherein the alkylethermonoamine contains between and 30 wt % isotridecyl(C13)etherpropylamine, 0 and 30 wt % of isododecyl(C12)etherpropylamine, 50 and 100 wt % of isoundecyl(C11)etherpropylamine, 0 and 30 wt % of isodecyl(C10)-etherpropylamine, 0 and 30% tetradecyl(C14)etherpropylamine, all wt % being based on total weight of alkylethermonoamine.

### Claim 4 (depends on 1)

Process of claim 1 wherein the degree of branching of the alkylethermonoamine is between 1.5 and 3.5.

### Claim 5 (depends on 1)

Process of claim 1 wherein the collector composition contains less than 5 wt % of alkyletherdiamine on total amine components.

### Claim 6 (depends on 1)

Process of claim 1 wherein the process to treat magnetite ore is a process to enrich iron from silica.

### Claim 7 (depends on 1)

Process of claim 1 wherein the process is a reverse flotation process.

### Claim 8 (depends on 1)

Process of claim 1 wherein the collector composition contains further additives selected from the group of depressants, froth modifiers, pH regulators, and neutralizing agents.

### Claim 9 (depends on 1)

Process of claim 1 wherein the collector composition additionally contains a secondary collector, preferably selected from the group of branched alkyl fatty alcohols and alkoxylated alkyl fatty alcohols.

### Claim 10 (depends on 1)

Process of claim 1 wherein the ore contains less than 10 wt % of silica on total ore solids.

### Claim 11

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 is an alkylethermonoamine with a degree of branching higher than 1 and contains between 0 and 30 wt % isotridecyl(C13)etherpropylamine, 0 and 30 wt % of isododecyl(C12)etherpropylamine, 50 and 100 wt % of isoundecyl(C11)-etherpropylamine, 0 and 30 wt % of isodecyl(C10)etherpropylamine, 0 and 30 wt % tetradecyl(C14)etherpropylamine, all wt % being based on total weight of alkylethermonoamine.

### Claim 12 (depends on 11)

Collector composition of claim 11 wherein the degree of branching of the alkylethermonoamine is between 1.5 and 3.5.

### Claim 13 (depends on 11)

Collector composition of claim 11 wherein the collector composition contains less than 5 wt % of alkyletherdiamine on total amine components.