Method of using flotation collector containing azolethione structure

Patent metadata

Field	Value
Publication number	US-10737280-B2
Application number	US-201916361156-A
Country	US
Kind code	B2
Filing date	Mar 21, 2019
Priority date	Sep 23, 2016
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

The present invention relates to an azolethione flotation collector and application thereof. According to the application, an azolethione compound such as a 1,3,4-thiadiazole-2-thione compound, a 1,3,4-oxadiazole-2-thione compound, a 1,2,4-triazole-3-thione compound or a 1,2,4,5-tetrazole-3-thione compound is used as a mineral flotation collector to be applied to ores containing copper, zinc, lead, nickel, cobalt, platinum, palladium, silver or gold minerals to realize flotation recovery of valuable metal minerals. Compared with common flotation collectors in the existing technologies, the flotation collector of the present invention can effectively improve enrichment and recovery of copper, zinc, lead, nickel, cobalt, platinum, palladium, silver or gold minerals.

First claim

What is claimed is:

1. A method of using a flotation collector containing an azolethione structure, wherein the flotation collector with the azolethione compound having the structure as shown in formula 1 is applied for flotation separation of ores containing at least one of copper minerals, silver minerals and gold minerals as well as zinc minerals, lead minerals, nickel minerals, cobalt minerals, platinum minerals and palladium minerals to realize flotation recovery of valuable metal minerals,

wherein X is NH, O or S, and Y is

or,
X is NH, and Y is

R is a C 1 -C 17 hydrocarbyl group or an alkoxy ether group having the structure as shown in formula 2;

R 1 is a C 1 -C 17 hydrocarbyl group; R 2 is H or a C 1 -C 3 alkane group;
and n is an integer from 2 to 5;
wherein in formula 2, R 4 is a C 1 -C 17 hydrocarbyl group, R 3 is an ethylidene group or a propylidene group, and m is 1-3.

2. The method of using the flotation collector containing the azolethione structure according to claim 1 , wherein the flotation collector having the structure as shown in formula 1 has the structure as shown in formula 3, 4, 5 or 6:

3. The method of using the flotation collector containing the azolethione structure according to claim 1 , wherein R is a C 1 -C 17 alkane group, or a C 2 -C 17 olefinic group, or a C 6 -C 12 aryl group.

4. The method of using the flotation collector containing the azolethione structure according to claim 2 , wherein R is a C 1 -C 17 alkane group, or a C 2 -C 17 olefinic group, or a C 6 -C 12 aryl group.

5. The method of using the flotation collector containing the azolethione structure according to claim 3 , wherein R is a linear C 1 -C 17 alkane group or a C 10 -C 17 monoolefine group.

6. The method of using the flotation collector containing the azolethione structure according to claim 4 , wherein R is a linear C 1 -C 17 alkane group or a C 10 -C 17 monoolefine group.

7. The method of using the flotation collector containing the azolethione structure according to claim 3 , wherein R is propyl, pentyl, hexyl, heptyl, nonyl, n-hendecyl, n-tridecyl, n-pentadecyl, n-heptadecyl or 8-heptadecenyl.

8. The method of using the flotation collector containing the azolethione structure according to claim 4 , wherein R is propyl, pentyl, hexyl, heptyl, nonyl, n-hendecyl, n-tridecyl, n-pentadecyl, n-heptadecyl or 8-heptadecenyl.

9. The method of using the flotation collector containing the azolethione structure according to claim 1 , wherein in formula 2, R 3 is an ethylidene group.

10. The method of using the flotation collector containing the azolethione structure according to claim 1 , wherein R 4 is a linear C 1 -C 17 alkane group or a C 10 -C 17 monoolefine group.

11. The method of using the flotation collector containing the azolethione structure according to claim 10 , wherein in formula 2, R 4 is propyl, pentyl, hexyl, heptyl, nonyl, n-hendecyl, n-tridecyl, n-pentadecyl, n-heptadecyl or 8-heptadecenyl.

12. The method of using the flotation collector containing the azolethione structure according to claim 1 , wherein the flotation collector is the 1,2,4,5-tetrazole-3-thione compound having the structure as shown in formula 7:

or the 1,2,4,5-tetrazole-3-thione compound having the structure as shown in formula 8:

13. The method of using the flotation collector containing the azolethione structure according to claim 12 , wherein R 1 is a C 1 -C 17 alkane group, or a C 2 -C 17 olefinic group, or a C 6 -C 12 aryl group.

14. The method of using the flotation collector containing the azolethione structure according to claim 13 , wherein R 1 is methyl, ethyl, n-propyl, n-butyl, n-pentyl, n-hexyl, n-heptyl, n-octyl, n-nonyl, n-decyl, n-hendecyl, n-dodecyl, n-tridecyl, n-tetradecyl, n-pentadecyl, n-hexadecyl or n-heptadecyl.

15. The method of using the flotation collector containing the azolethione structure according to claim 12 , wherein R 2 is H, methyl, ethyl, propyl or isopropyl.

16. The method of using the flotation collector containing the azolethione structure according to claim 12 , wherein R 1 is propyl, pentyl, hexyl, heptyl or nonyl, and R 2 is H or methyl.

17. The method of using the flotation collector containing the azolethione structure according to claim 12 , wherein n in the compound having the structure as shown in formula 8 is 3.

18. The method of using the flotation collector containing the azolethione structure according to claim 1 , comprising the following steps:
step (1): crushing, grinding and pulping the ore containing at least one of copper minerals, zinc minerals, lead minerals, nickel minerals, cobalt minerals, platinum minerals, palladium minerals, silver minerals and gold minerals to obtain ore pulp;
step (2): adding a flotation agent to the ore pulp obtained in step (1) for flotation, and collecting a flotation concentrate, wherein the flotation agent comprises the flotation collector.

19. The method of using the flotation collector containing the azolethione structure according to claim 2 , comprising the following steps:
step (1): crushing, grinding and pulping the ore containing at least one of copper minerals, zinc minerals, lead minerals, nickel minerals, cobalt minerals, platinum minerals, palladium minerals, silver minerals and gold minerals to obtain ore pulp;
step (2): adding a flotation agent to the ore pulp obtained in step (1) for flotation, and collecting a flotation concentrate, wherein the flotation agent comprises the flotation collector.

20. The method of using the flotation collector containing the azolethione structure according to claim 13 , wherein R 2 is H, methyl, ethyl, propyl or isopropyl.

Assignees

• Univ Central South

Inventors

• Liu Guangyi
• Huang Yaoguo
• Ma Longqun
• Niu Xiaoxue
• Liu Jun
• Zhong Hong
• Hu Zhe

Classifications

• B03D1/02

  Froth-flotation processes · CPC title

• B03D2203/025

  Precious metal ores · CPC title

• B03D1/012 Primary

  containing sulfur · CPC title

• B03D2203/02

  Ores · CPC title

• B03D2201/02

  Collectors · CPC title