Inflatable nano microvesicle high-ash coal slime flotation equipment and flotation method thereof

An air-inflated, high-ash coal technology, applied in flotation, solid separation, etc., can solve the problems of unable to normally introduce air, difficult flotation standard clean coal, foam impact damage, etc., to improve the separation speed and selectivity, Improve fusion efficiency and increase production capacity

Pending Publication Date: 2019-05-21
西安煤科动力科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The same point is that the falling point of the flushing water is in contact with the foam, the contact surface is narrow, and the contact surface of the foam area is less than 15%, and the falling point is easy to cause impact damage to the foam
However, it is suitable for static flotation for coal and slime adsorption slime, high ash content, and particle size <0.125mm, and its swirl force field is not suitable for the separation of existing high-ash coal slime
In addition, the working medium of the air-slurry mixed-flow inflatable nano-bubble generator is circulating middling ore pulp, which can easily c

Method used

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  • Inflatable nano microvesicle high-ash coal slime flotation equipment and flotation method thereof
  • Inflatable nano microvesicle high-ash coal slime flotation equipment and flotation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Example 1 reference figure 1 .

[0056] An inflatable nano-microbubble ultra-high ash tailings flotation equipment, including a main flotation column 100, the main flotation column 100 includes a pulp multi-point distributor 7 arranged at the upper middle position inside it, and a multi-point distributor 7 arranged at the top of it The foam trapping device 4, the atomizing spray device 5 arranged on the foam trapping device 4, the high-speed disperser device 2 arranged in the foam trapping device 4, and several bubble generators 10 are arranged around its lower outer wall position , surrounding the delivery air pipe 9 that is arranged on the outside thereof and communicated with the bubble generator 10 through a pipeline, the gas storage tank 8 and the air compressor 81 that are arranged on the outside of it and are connected with the delivery air pipe 9 in turn through a pipeline, are arranged on the outside of it and connected with the air delivery pipe 9 The tailing...

Embodiment 2

[0076] Example 2 reference figure 2 .

[0077] The main flotation column 100 is sequentially connected with two secondary flotation columns 101, 102;

[0078] Both the main flotation column 100 and the secondary flotation columns 101, 102 include a slurry multi-point distributor 7 arranged in the middle and upper position inside it, a foam trapping device 4 arranged on the top thereof, and a foam trapping device 4 arranged on the top. The atomizing spray device 5 on the top, the high-speed disperser device 2 arranged in the foam trapping device 4, several bubble generators 10 are arranged around the outer wall of the lower part, and are arranged around the outside of it and pass through the pipeline and the bubble generator 10 The communicating conveying air pipe 9 and the tailings overflow discharge pipe 11 arranged outside and communicating with the bottom thereof.

[0079] The delivery air pipe 9 is sequentially connected with the air storage tank 8 and the air compresso...

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Abstract

The invention provides inflatable nano microvesicle high-ash coal slime flotation equipment. The inflatable nano microvesicle high-ash coal slime flotation equipment comprises a main flotation columnand two secondary flotation columns, the main flotation column comprises an agent box, an ore pulp preprocessor, a high-speed disperser and a delivery pump which are mounted outside the main flotationcolumn, and an ore pulp multi-spot distributor mounted on the main flotation column, a foam collecting device, an atomizing spraying device, a bubble generator surrounding the outer wall of the lowerportion of the main flotation column, a conveying air pipe, an air storage tank and an air compressor are further included. The main flotation column and the secondary flotation columns are adopted for sequentially selecting concentrate, middlings and tailings are removed, and clean coal products with the ash content of 11% or below are finally obtained.

Description

【Technical field】 [0001] The invention belongs to the technical field of coal slime and metal ore flotation, and in particular relates to an inflatable nano-microbubble high-ash coal slime flotation device and a flotation method thereof. 【Background technique】 [0002] Coal slime is one of the solid wastes with the largest emissions in my country. The reuse of coal slime resources is an inevitable choice for my country's coal-based energy structure, and it is also one of the important measures to implement sustainable development strategies. my country's policy on waste is reduction, recycling and harmless utilization. [0003] At present, the ash content of coking coal slime produced in coal mines is between 45% and 55%, and that of steam coal slime produced is between 35% and 50%. Some of these slimes have been reused by traditional equipment and processes, and exhausted All methods finally obtain a coal ash content between 12-20%, a recovery rate between 10-20%, and stil...

Claims

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Application Information

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IPC IPC(8): B03D1/24B03D1/02B03B1/00
Inventor 张岩斌
Owner 西安煤科动力科技有限公司
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