Application of selenium-containing organic compounds in copper sulfide flotation collectors

Patent metadata

Field	Value
Publication number	US-12458984-B2
Application number	US-202318107114-A
Country	US
Kind code	B2
Filing date	Feb 8, 2023
Priority date	Oct 17, 2022
Publication date	Nov 4, 2025
Grant date	Nov 4, 2025

Abstract

Disclosed is an application of a class of selenium-containing organic compounds in copper sulfide flotation collectors, including organic compound with selenium atoms as functional groups and containing single selenium atom or multiple selenium atoms, where the organic compound with selenium atoms as functional groups and containing single selenium atom or multiple selenium atoms includes but not limited to selenophene, phenylselenol and diselenide as copper collectors; and a class of organic compound containing selenium atoms combined with nitrogen, oxygen, phosphorus, sulfur and carbon, where the class of organic compound containing selenium atoms combined with nitrogen, oxygen, phosphorus, sulfur and carbon includes but not limited to selenomethyl ester, carbonyl selenomethyl ester, oxycarbonyl selenomethyl ester, selenourea, selenium nitrogen, selenoxanthonic acid, selenoxanthate, selenophosphoric acid, selenium phosphate ester, triphenylphosphine selenide, all kinds of benzoselenediazole molecules as copper collectors.

First claim

What is claimed is:

1 . An application of a class of selenium-containing organic compounds in copper sulfide flotation collectors, wherein the selenium-containing organic compounds comprise organic compounds with selenium atoms as functional groups and containing single selenium atom or multiple selenium atoms and organic compound containing selenium atoms combined with nitrogen, oxygen, phosphorus, sulfur and carbon, wherein the selenium-containing organic compounds comprise at least one of selenophene, phenylselenol, diselenide, selenomethyl ester, carbonyl selenomethyl ester and oxycarbonyl selenomethyl ester, selenourea, selenium nitrogen, selenoxanthonic acid, selenoxanthate, selenophosphoric acid, selenium phosphate ester, triphenylphosphine selenide, or benzoselenediazole molecules as copper collectors, comprising:
grinding copper sulfide-containing ore to a fineness of 200 mesh with 65% passing rate to yield a screened copper sulfide-containing ore, followed by pulp conditioning of the screened copper sulfide-containing ore with lime as a pH regulator for 3 minutes; adding a foaming agent to the pulp and conditioning for 2 minutes; adding the selenium-containing organic compounds as a collector to the pulp and conditioning for 2 minutes; and performing flotation to recover copper sulfide minerals.

2 . The application of a class of selenium-containing organic compounds in copper sulfide flotation collectors according to claim 1 , wherein molecular structures of the organic compounds with selenium atoms as functional groups and containing single selenium atom or multiple selenium atoms as the copper sulfide flotation collectors are as follows:

3 . The application of a class of selenium-containing organic compounds in copper sulfide flotation collectors according to claim 1 , wherein molecular structures of the organic compound containing selenium atoms combined with nitrogen, oxygen, phosphorus, sulfur and carbon are as follows:

4 . The application of a class of selenium-containing organic compounds in copper sulfide flotation collectors according to claim 2 , wherein using the dibenzyl diselenide as the collector comprises following steps:
dissolving 0.5%-5% of the dibenzyl diselenide in 95%-99.5% of dichloromethane according to percentage by mass, and stirring for 5 minutes to completely dissolve the dibenzyl diselenide.

5 . The application of a class of selenium-containing organic compounds in copper sulfide flotation collectors according to claim 2 , wherein using the phenyl selenium chloride as the collector comprises following steps:
dissolving 0.5%-5% of the phenyl selenium chloride in 95%-99.5% of dichloromethane according to percentage by mass, and stirring for 5 minutes to completely dissolve the phenyl selenium chloride.

6 . The application of a class of selenium-containing organic compounds in copper sulfide flotation collectors according to claim 2 , wherein using the phenylselenol as the collector comprises following steps:
dissolving 0.5%-5% of the phenylselenol in 95%-99.5% of dichloromethane according to percentage by mass, and stirring for 5 minutes to completely dissolve the phenylselenol.

7 . The application of a class of selenium-containing organic compounds in copper sulfide flotation collectors according to claim 2 , wherein using the dimethyl diselenide as the collector comprises following steps:
dissolving 0.5%-5% of the dimethyl diselenide in 95%-99.5% of dichloromethane according to percentage by mass, and stirring for 5 minutes to completely dissolve the dimethyl diselenide.

8 . The application of a class of selenium-containing organic compounds in copper sulfide flotation collectors according to claim 2 , wherein using the selenophene as the collector comprises following steps:
dissolving 0.5%-5% of the selenophene in 95%-99.5% of dichloromethane according to percentage by mass, and stirring for 5 minutes to completely dissolve the selenophene.

9 . The application of a class of selenium-containing organic compounds in copper sulfide flotation collectors according to claim 3 , wherein using the triphenylphosphine selenide as the collector comprises following steps:
dissolving 0.5%-5% of the triphenylphosphine selenide in 95%-99.5% of dichloromethane according to percentage by mass, and stirring for 5 minutes to completely dissolve the triphenylphosphine selenide.

10 . The application of a class of selenium-containing organic compounds in copper sulfide flotation collectors according to claim 3 , wherein using the 2,1,3-benzoselenediazole as the collector comprises following steps:
dissolving 0.5%-5% of the 2,1,3-benzoselenediazole in 95%-99.5% of dichloromethane according to percentage by mass, and stirring for 5 minutes to completely dissolve the 2,1,3-benzoselenediazole.

Assignees

• Univ Guangxi

Inventors

• Chen Jianhua
• Luo Anruo

Classifications

• B03D2203/02

  Ores · CPC title

• B03D2201/02

  Collectors · CPC title

• B03D1/014

  containing phosphorus · CPC title

• B03D1/012

  containing sulfur · CPC title

• B03D1/01

  containing nitrogen · CPC title