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A three-product hydraulic flotation machine and sorting method for coarse particle recovery

A three-product, flotation machine technology, applied in flotation, chemical instruments and methods, solid separation, etc., can solve the problems of continuous separation and recovery of coal slime, complicated coal slime sorting process, and product mismatch content Advanced problems, to achieve the effect of shortening the separation preparation time, improving the quality of clean coal products, and avoiding pollution

Active Publication Date: 2021-11-02
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0004] In view of the above analysis, the embodiment of the present invention aims to provide a three-product hydraulic flotation machine and a sorting method for coarse particle recovery to solve the problem of complex coal slime sorting process, small processing capacity and product mismatch. The problem of high content of solids and the inability to meet the continuous separation and recovery of coal slime

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  • A three-product hydraulic flotation machine and sorting method for coarse particle recovery

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Embodiment 1

[0038] A specific embodiment of the present invention, such as figure 1 As shown, a three-product hydraulic flotation machine for coarse particle recovery is disclosed, including a first column 1 and a second column 2 connected in parallel at high and low levels, the axis of the first column 1 is connected to the second column 2 The axes are parallel, the bottom of the second cylinder 2 is not higher than the top of the first cylinder 1, the top of the first cylinder 1 communicates with the middle of the second cylinder 2, the first cylinder 1 and the second cylinder 2 The inner diameter ratio is 1.5-3:1, the upper end of the first cylinder 1 is provided with a feeding device 11, the feeding device 11 is connected with the external slurry preprocessor, and the upper end of the second cylinder 2 is provided with a spray water pipe 21, The spray water pipe 21 is connected with the external clean water pipe.

[0039] It should be noted that the heights of the first cylinder 1 an...

Embodiment 2

[0062] Another specific embodiment of the present invention discloses a three-product hydraulic separation method for coarse particle recovery, which is implemented by using the three-product hydraulic flotation machine in Embodiment 1. The steps include:

[0063] Step 1: Open the valves of the first fluidization water port 31 and the second fluidization water port 32, start the booster pump 34, the water flow will inhale air through the bubble generator 18 at a certain pressure, and add a certain amount of water to the water flow through the bubble generator 18 foaming agent.

[0064] The foaming agent is selected from 2-octyl alcohol, methyl isobutyl carbinol, methyl pentanol or dodecyltrimethylammonium bromide, and the consumption is 0.2-2kg / t; in this embodiment, the foaming agent is selected from 2-octyl Alcohol, the dosage is 0.5kg / t. The introduction of air bubbles in the fluidized water expands the difference in specific gravity between different hydrophobic mineral c...

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Abstract

The invention relates to a three-product hydraulic flotation machine and a sorting method for coarse particle recovery, which belongs to the technical field of coal slime sorting and recovery, and solves the problems of complicated coal slime sorting process, small processing capacity and product mismatch. The problem of high content and the inability to meet the continuous separation and recovery of coal slime. The three-product hydraulic flotation machine of the present invention includes a first column and a second column, the axis of the first column is parallel to the axis of the second column, and the bottom of the second column is not higher than the top of the first column , the top of the first cylinder communicates with the middle of the second cylinder; the ascending water velocity in the first cylinder is greater than the ascending water velocity in the second cylinder. The present invention separates the coal slime through a three-product hydraulic flotation machine with two sections of columns connected in parallel, and refines the sorting process of the coarse coal slime, which not only avoids the loss of medium coal in the tailings, but also avoids the loss of medium coal in the tailings. The pollution of coal to clean coal improves the quality of clean coal and realizes the continuous, accurate and efficient separation of coal slime.

Description

technical field [0001] The invention relates to the technical field of coal slime separation and recovery, in particular to a three-product hydraulic flotation machine and a separation method for coarse particle recovery. Background technique [0002] As we all know, my country is a country rich in coal, poor in oil, and low in gas. As an important pillar of my country's energy structure, coal will have an unshakable dominant position in the next few decades of development. With the decrease of coal resources and the rapid development of mechanized coal mining and dense medium coal preparation, the problem of difficult separation of coal slime in my country has become more prominent, showing the characteristics of micronization, high ash content, and large content of intergrowth. Traditional coal slime separation has problems such as weak recovery ability, strong scale effect, and non-uniform change of buoyancy, all of which put forward higher requirements for the optimizati...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B03B7/00B03B5/62B03D1/02
CPCB03B5/623B03B7/00B03D1/02
Inventor 邢耀文丁世豪桂夏辉曹亦俊魏立勇车涛田立新孟凡彩佟顺增
Owner CHINA UNIV OF MINING & TECH
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