Functionalized silicones for froth flotation

Patent metadata

Field	Value
Publication number	US-11014097-B2
Application number	US-201715840928-A
Country	US
Kind code	B2
Filing date	Dec 13, 2017
Priority date	Dec 14, 2016
Publication date	May 25, 2021
Grant date	May 25, 2021

Abstract

Improved sparge compositions for froth flotation separation, methods of using them, and uses thereof are described. The compositions are suitably used in the froth flotation of particulate material containing ultrafine particles, and are well suited to the froth flotation separation of finely comminuted poor (low-grade) ores. The sparge compositions comprise functionalized silicone containing functionality that is tailored to the chemical nature of a beneficiary or a gangue in the ore. Sparging of the compositions effects improved recoveries and purities of beneficiaries. Sparge compositions and functionalized silicones suitable for the froth flotation of iron ores containing silica and/or silicate impurities are described. Sparge compositions and functionalized silicones suitable for the froth flotation of ores containing sulfur compounds such as sulfides are also disclosed.

First claim

What is claimed is:

1. A sparge composition comprising:
(i) a medium comprising water;
(ii) an ore comprising a beneficiary and a gangue, the gangue comprising a silica, a silicate, or a combination thereof; and
(iii) one or more functionalized silicones having the formula (I)

wherein each of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 R 7 , R 8 , R 9 , R 10 , R 11 , and R 12 is individually selected from linear alkyl, branched alkyl, alicyclic alkyl, aryl, alkaryl, alkoxy, hydroxyalkyl, hydroxyalkoxy, alkoxyalkyl, alkyl ether, hydroxylated polyol, and —(CH 2 ) b -A wherein b is an integer from 0-20, with the proviso that at least one of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 R 7 , R 8 , R 9 , R 10 , R 11 , and R 12 is —(CH 2 ) b -A,
wherein n is from 0 to 700, j is from 0 to 700, and m is from 0 to 700, with the proviso that the sum [n+j+m] is 1-2100, and
wherein A is a moiety selected from amino, mercapto, amines, ammonium groups, thiols, carboxylates, sulfates, sulfonates, hydroxamates, sulfosuccinates, sulfosuccinamates, phosphonic esters, phosphoric esters, xanthates, xanthogen formates, dithiophosphinates, trithiocarbonates, dithiophosphates, thiazoles, sulfides, disulfides, and oximes.

2. The sparge composition of claim 1 , wherein b>0.

3. The sparge composition of claim 1 , wherein b=3.

4. A sparge composition comprising:
(i) a medium comprising water;
(ii) an ore comprising a beneficiary and a gangue; and
(iii) one or more functionalized silicones having the formula (I)

wherein each of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 and, R 12 is individually selected from linear alkyl, branched alkyl, alicyclic alkyl, aryl, alkaryl, alkoxy, hydroxyalkyl, hydroxyalkoxy, alkoxyalkyl, alkyl ether, hydroxylated polyol, and —(CH 2 ) b -A wherein b is an integer from 0-20, with the proviso that at least one of R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , R 9 , R 10 , R 11 , and R 12 is —(CH 2 ) b -A,
wherein n is from 0 to 700, j is from 0 to 700, and m is from 0 to 700, with the proviso that the sum [n+j+m] is 1-2100,
wherein A is a moiety selected from amino, amines, and ammonium groups, the beneficiary comprises an iron oxide, and the gangue comprises a silica, a silicate, or a combination thereof.

5. The sparge composition of claim 4 , the sparge composition further comprising a collector selected from fatty amine compounds, ether amines, and mixtures thereof.

6. The sparge composition of claim 4 , the sparge composition further comprising isotridecyloxypropyl-1,3-diaminopropane.

7. The sparge composition of claim 6 , the sparge composition further comprising a frother selected from propylene glycol ether, isopropyl alcohol, oleyl diamine, and methyl isobutyl carbinol.

8. The sparge composition of claim 1 , wherein the beneficiary comprises a sulfide and A is a moiety selected from mercapto, thiols, xanthates, dithiophosphinates, trithiocarbonates, dithiophosphates, thiazoles, sulfides, and disulfides.

9. The sparge composition of claim 8 , further comprising a collector selected from xanthates, xanthogen formates, thionocarbamates, dithiophosphates, sodium salts of dithiophosphates, zinc salts of dithiophosphates, thiols, mercaptobenzothiazoles, ethyl octyl sulfide, or a combination thereof.

10. The sparge composition of claim 1 , wherein the number average molecular weight of each of the one or more functionalized silicones is between 200 and 10,000.

11. The sparge composition of claim 1 , wherein the one or more functionalized silicones is selected from

wherein d is 1-20 and e is 1-20,

and any combination thereof.

12. The sparge composition of claim 1 , wherein the one or more functionalized silicones comprises

wherein n is 0 to 2, and j is 2 to 4.

13. The sparge composition of claim 12 , wherein the beneficiary comprises an iron oxide.

Assignees

• Ecolab Usa Inc

Inventors

• Liu Jianjun
• Hay Daniel
• Herrera Jaqueline
• O'Brien Kevin
• Bauch Eric
• Vale Glenda

Classifications

• B03D1/0046

  containing silicon · CPC title

• B03D2201/04

  Frothers · CPC title

• B03D2201/02

  Collectors · CPC title

• B03D1/016

  Macromolecular compounds · CPC title

• B03D1/008

  containing oxygen · CPC title