Wide-size-fraction flotation system and process

A flotation, wide-grain technology, applied in the wide-grain flotation system and process field, can solve the problems of complex wide-grain flotation process, environmental hazards, high energy consumption, etc. The effect of low energy consumption

Active Publication Date: 2019-05-10
CHINA UNIV OF MINING & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the above analysis, the present invention aims to provide a wide particle size flotation system and process to solve the problems of complex, high cost, high energy consumption and environmental hazards in the existing wide particle size flotation process

Method used

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  • Wide-size-fraction flotation system and process

Examples

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Embodiment 1

[0031] A specific embodiment of the present invention, such as figure 1 As shown, a wide particle size flotation process is disclosed, including the following steps:

[0032] Step 1: Feed the coal slime to be floated into the agitator 1, add water into the agitator 1 to mix the floating coal slurry, and then feed it into the classifying cyclone 2 via the first feed pump a for pre-classification; Ground, the floating coal slime is classified according to 0.125mm in the classification cyclone 2, that is, the classification accuracy of the classification cyclone 2 is ±0.125mm, the particle size in the overflow of the classification cyclone is -0.125mm, and the particle size in the underflow It is ﹢0.125mm.

[0033] Step 2: After the classification of coal slime in the classification cyclone 2 is completed, the overflow in the classification cyclone 2 is supplied to the flotation column 4 by the second feed pump b for flotation. After the flotation is completed, the flotation tailings...

Embodiment 2

[0039] A specific embodiment of the present invention, such as figure 2 As shown, the wide-grain flotation system used in the wide-grain flotation process in the first embodiment is disclosed. A stirrer 1, a grading cyclone 2 and a flotation device are arranged along the separation pipeline. Stirrer 1 There is a first feed pump a between the grading cyclone 2 and the flotation device includes a hydraulic flotation machine 3 and a flotation column 4; the top of the grading cyclone 2 is provided with an upper discharge port and an upper discharge port Connected to the flotation column 4, a second feed pump b is provided between the upper discharge port and the flotation column 4; the bottom of the grading cyclone 2 is provided with a lower discharge port, which is connected to the hydraulic flotation machine 3 connection, a third feed pump c is provided between the lower discharge port and the hydraulic flotation machine 3. The flotation column 4 is provided with an underflow p...

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Abstract

The invention belongs to the technical field of coal washing and deashing, relates to a wide-size-fraction flotation system and process and solves problems of complexity, high cost, high energy consumption and environmental hazards in application of an existing wide-size-fraction flotation process. The wide-size-fraction flotation process includes steps: step one, feeding to-be-floated coal slimeinto an agitator, adding water into the agitator, well stirring and mixing, and feeding into a classification cyclone through a first feeding pump to realize preliminary classification; step two, after classification of coal slime is completed in the classification cyclone, feeding overflow in the classification cyclone into a flotation column through a second feeding pump to realize flotation, discharging flotation tailings through an underflow port of the flotation column, collecting flotation concentrate through an overflow port of the flotation column, and feeding into a bubble generator through a fourth feeding pump; step three, feeding underflow in the classification cyclone into a hydraulic flotation machine through a third feeding pump to realize flotation recovery. The process issimple, energy saving and environmental friendliness are realized, and the flotation system is simple in structure and low in cost.

Description

Technical field [0001] The invention relates to the technical field of coal washing and deashing, in particular to a wide-grain flotation system and process. Background technique [0002] my country is a country with more coal, less oil and poor gas. With its own rich, reliable, and economical characteristics, coal will remain the mainstay of my country's energy in the future economic development. With the deepening of sustainable development, the country and people are paying more and more attention to environmental protection in the process of energy use, and more and more advocating the use of clean energy. At the same time, as the world's largest energy consumer, with the rapid growth of energy production and consumption, environmental pollution and energy security issues have become increasingly prominent. In view of this situation, the clean and efficient use of coal is the key to solving the problem. However, with the rapid improvement of my country's coal mining mechani...

Claims

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Application Information

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IPC IPC(8): B03D1/02B03D1/016B03D1/14B04C9/00B03D103/08B03D101/02B03D101/04
CPCB03D1/02B03D1/016B03D1/14B03B9/005B03D2203/08B03D2201/00B03D1/082B03D1/085B03B5/28B03B7/00B03D1/028B03D1/1418B03D1/24
Inventor 邢耀文桂夏辉丁世豪徐梦迪曹亦俊张友飞夏阳超
Owner CHINA UNIV OF MINING & TECH
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