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Coal flotation capsule slow-release collecting agent and preparation method and application thereof

A collector and slow-release technology, applied in flotation, solid separation, etc., can solve problems such as complex operation, large amount of inhibitor addition, and inability to meet the flotation production requirements of coal preparation plants

Active Publication Date: 2022-05-13
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to overcome some technical problems existing in the prior art, to provide a capsule slow-release collector and its preparation method and application, and Solve the problem of large amount of inhibitor added alone in the flotation process of high-ash difficult-to-separation coal, complicated operation, poor ash reduction effect of flotation, non-selective suppression of coal slime leads to a decline in clean coal yield, which cannot meet the flotation production requirements of various coal preparation plants The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A capsule slow-release collector, the components of which are in parts by mass: 75% of collector agents, 15% of functional agents, and 10% of Span-80. Among them, the collection agents are measured in parts by mass, including: 55% diesel oil, 15% pine oil, and 30% oleic acid esters.

[0040] The capsule slow-release collector is prepared according to the following steps:

[0041] (1) Weigh each component in parts by mass: Weigh 75 parts of harvesting agents and 10 parts of Span-80; among them, the harvesting agents include: 55 parts of diesel oil, 15 parts of pine oil, 30 parts of oleic acid esters share.

[0042] (2) Preparation of mixed collector: Add 1 / 3 of the amount of Span-80 weighed in step (1) to the diesel oil weighed in step (1), and at the same time add the pine Oil and oleic acid esters are mixed with the above-mentioned diesel oil added with Span-80, and the process of step (2) is carried out in an ultrasonic cleaner with an ultrasonic power of 250 W and ...

Embodiment 2

[0047] A capsule slow-release collector, in parts by mass, comprising: 80% of collector agents, 10% of functional agents, and 10% of Span-80; wherein the collector agents, in parts by mass, include: 50% of diesel oil %, pine oil 5%, oleic acid esters 45%.

[0048] The capsule slow-release collector is prepared according to the following steps:

[0049] (1) Weigh each component in parts by mass: weigh 80 parts of collecting agents and 10 parts of emulsifiers; among them, collecting agents include: 50 parts of diesel oil, 5 parts of pine oil, and 45 parts of oleic acid esters .

[0050] (2) Preparation of mixed collector: Add 1 / 3 of the amount of Span-80 weighed in step (1) to the diesel oil weighed in step (1), and at the same time add the pine Oil and oleic acid esters were mixed with the above-mentioned Span-80 diesel oil, and the process of step (2) was carried out in an ultrasonic cleaner with an ultrasonic power of 250 W and an ultrasonic time of 30 min.

[0051] (3) Pr...

Embodiment 3

[0055] A capsule slow-release collector, in parts by mass, comprising: 75% of the collector agent, 5% of the functional agent, and 20% of Span-80; where the collector agent is in parts by mass, including: 60% of diesel oil, Pine oil 25%, oleic acid esters 15%.

[0056] The capsule slow-release collector is prepared according to the following steps:

[0057] (1) Weigh each component in parts by mass: Weigh 75 parts of harvesting chemicals and 20 parts of emulsifier; the mass parts of harvesting chemicals are: 60 parts of diesel oil, 25 parts of pine oil, oleic acid base 15 parts of esters.

[0058] (2) Preparation of mixed collector: Add 1 / 3 of the amount of Span-80 weighed in step (1) to the diesel oil weighed in step (1), and at the same time add the pine Oil and oleic acid esters are mixed with the above-mentioned Span-80 diesel oil, and the process of step (2) is carried out in an ultrasonic cleaner with an ultrasonic power of 300 W and an ultrasonic time of 25 min.

[0...

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Abstract

The invention discloses a coal flotation capsule slow-release collecting agent as well as a preparation method and application thereof. The collecting agent comprises a collecting agent, a functional agent and an emulsifier, wherein the collecting agent comprises the following components: diesel oil, pine oil and oleic acid ester; the functional medicament is formed by mixing a water glass solution and a sulfuric acid solution in proportion; and the emulsifier is a nonionic surfactant. Compared with a conventional collecting agent, the capsule slow-release collecting agent is of a special capsule structure and has the dual effects of collecting and selective inhibition; when a collecting agent capsule shell acts on a coal molecule hydrophobic point, an original capsule structure collapses, an inhibitor component of a capsule inner core is released, and when a collecting agent does not act on coal molecules, an inhibitor is temporarily sealed and stored by the collecting agent. And due to slow release of the inhibitor, excessive consumption in a short time is avoided, the problem that the inhibition effect becomes poor along with reduction of the concentration of the inhibitor is solved, and the capsule slow-release collecting agent is higher in selectivity and has a wide application prospect.

Description

technical field [0001] The invention belongs to the technical field of flotation agents, in particular to a coal flotation capsule slow-release collector and its preparation method and application, in particular to a collector suitable for high-efficiency separation of high-ash refractory coal slime and its Preparation. Background technique [0002] With the continuous improvement of the mechanization of coal mining and the continuous promotion of main separation processes such as dense medium and jigging, a large amount of secondary coal slime is produced, resulting in poor selectivity of coal slime, and the problem of "poor, fine and miscellaneous" coal processing in my country protrude. Flotation is a method of separating minerals by utilizing the difference in the hydrophobicity of the mineral surface. It is widely used in my country as an effective separation process for fine-grained coal slime. The flotation agents used in the flotation process have a great influence ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03D1/018B03D101/02
CPCB03D1/018B03D2201/02
Inventor 桂夏辉邢耀文王钰赛王磊徐梦迪夏阳超车涛孟凡彩李永改
Owner CHINA UNIV OF MINING & TECH
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