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A kind of inhibitor for inhibiting sulfurized m in flotation process and using method thereof

A flotation process and inhibitor technology, applied in flotation, solid separation, etc., to achieve the effect of simple preparation method, strong inhibition ability, and promotion of comprehensive utilization

Active Publication Date: 2019-10-08
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the technology of preparing sulfide ore flotation inhibitors using phenolic compounds, bisulfites, aldehyde compounds, and amine compounds as raw materials is rarely reported in the mineral processing industry.

Method used

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  • A kind of inhibitor for inhibiting sulfurized m in flotation process and using method thereof
  • A kind of inhibitor for inhibiting sulfurized m in flotation process and using method thereof
  • A kind of inhibitor for inhibiting sulfurized m in flotation process and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] ⑴In parts by weight, add a certain amount of ultrapure water into a three-necked flask equipped with a stirring and condensing reflux device. As for the constant temperature water bath, add 15 parts of gallic acid after passing nitrogen for 30 minutes, and stir until fully dissolved;

[0035] (2) Add 1.5 parts of sodium bisulfite to the result of step (1), heat in a water bath to 85°C, and react for 6 hours;

[0036] (3) Add 3 parts of formaldehyde solution to the reactant obtained in step (2), stir for 2 minutes, then add 3 parts of ethanolamine, react at 40°C for 5 hours, and the obtained liquid is the inhibitor.

Embodiment 2

[0038] ⑴In parts by weight, add a certain amount of ultrapure water into a three-necked flask equipped with a stirring and condensing reflux device. As for the constant temperature water bath, after passing nitrogen for 30 minutes, add 10 parts of tannic acid, and stir until fully dissolved;

[0039] (2) Add 1 part of sodium bisulfite to the result of step (1), heat in a water bath to 85°C, and react for 6 hours;

[0040] (3) Add 2 parts of formaldehyde solution to the reactant obtained in step (2), stir for 2 minutes, then add 2 parts of dimethylamine, react at 40°C for 5 hours, and the obtained liquid is the inhibitor.

Embodiment 3

[0042] ⑴In parts by weight, add a certain amount of ultrapure water into a three-necked flask equipped with a stirring and condensing reflux device, and in a constant temperature water bath, add 12.5 parts of tannin extract after 30 minutes of nitrogen gas, and stir until fully dissolved;

[0043] (2) Add 1.2 parts of potassium bisulfite to the result of step (1), heat in a water bath to 85°C, and react for 6 hours;

[0044] (3) Add 2.5 parts of formaldehyde solution to the reactant obtained in step (2), stir for 2 minutes, then add 2.5 parts of dimethylamine, react at 40°C for 5 hours, and the obtained liquid is the inhibitor.

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Abstract

The invention relates to an inhibitor for inhibiting M sulfide in the flotation process and a use method of the inhibitor and belongs to the technical field of sulfide ore dressing. The flotation separation inhibitor is prepared by taking phenols, amines, aldehydes and hydrosulphite as raw materials, producing an organic reagent containing hydroxyl groups, carboxyl groups, sulfonic groups and amine groups in a structure with chemical reaction. An obtained product has the inhibition effect to primary sulfide ores and secondary sulfide ores including lead, bismuth and antimony and can be appliedto sulfide ore flotation separation operation. A preparation method of the inhibitor is simple as well is mild in technological condition and wide in source of raw materials; and the obtained inhibitor is convenient to use, low in dosage of medicament and less in environmental pollution, meets the requirements for industrial production, can be used for practical industrial production and has a wide application prospect.

Description

technical field [0001] The invention relates to an inhibitor for inhibiting sulfide M in a flotation process and a use method thereof, belonging to the technical field of sulfide ore beneficiation. Background technique [0002] In the flotation separation process of sulfide ore, the choice of inhibitor is of great significance to improve the beneficiation index. There are many types of inhibitors, and the mechanism of action is also diverse. According to their chemical properties, they can be divided into two categories: inorganic inhibitors and organic inhibitors. There are few research reports on organic depressants in sulfide ore flotation, and their application in production is even rarer. There are many kinds of inorganic inhibitors, which can be divided into anionic inorganic inhibitors and cationic inorganic inhibitors according to their active ingredients. Anionic inorganic inhibitors mainly include cyanides such as sodium cyanide and potassium cyanide, sulfides su...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03D1/018B03D101/06B03D103/02
Inventor 刘润清林上勇胡岳华孙伟韩海生王丽
Owner CENT SOUTH UNIV
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