Experimental investigation on atomization and collecting efficiency of wind-spray dust controller and its parameters optimization

Kou, Baofu; Qiuzu, Liu; Cao, Shi-chen; Xiu, Hu; Li, Yanfeng; Wang, Yiran; Zhao, Bo-hui

doi:10.1007/s11771-015-2969-9

Cited by 6 publications

(3 citation statements)

References 14 publications

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“…Currently, water spray dust control technology is the most widely employed in the coal mining process (Kou et al, 2015;Li, Zhou, & Li, 2017). This technology has helped to improve the underground working environment, protect workers' health, and avoid mine dust accidents.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Assessment of On-Site Application Effects of Mine Dust Prevention and Control Technology

Appiah¹,

Liu²,

Aram³

et al. 2022

GEP

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Prolonged exposure to coal dust leads to various lung disorders, including incurable coal workers' pneumoconiosis (CWP), and endangers miners' health in underground mines. This article summarizes the latest research progress in dust control technology, including chemical dust suppressants, foam dust removal, ultrasonic atomization, magnetized water dust suppression, double curtains of wind and fog, biological nano-film, and emerging microbial dust suppressants in the field of dust. The actual application compares and analyzes the advantages and disadvantages of different dust removal technologies. The current three directions of mine dust prevention and control are pointed out: the prevention and control of respirable dust, hydrophobic dust, and secondary dust, and the prospects for future development trends. Given the treatment of respirable dust, it is necessary to strengthen the research on the dust generation mechanism under different working conditions and to explore the migration and settlement laws of respirable dust by constructing a numerical model of dust dynamics; for the treatment of hydrophobic dust, further research on the microphysical and chemical properties of coal dust is needed. The relationship between wettability and continuously optimizing the wetting agent; for the prevention and control of secondary dust in coal mines, emerging microbial dust suppression technologies need to be developed to explore the micro-action between microorganisms and coal dust molecules to achieve green prevention and control of dust.

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Section: Introductionmentioning

confidence: 99%

A Comparative Assessment of On-Site Application Effects of Mine Dust Prevention and Control Technology

Appiah¹,

Liu²,

Aram³

et al. 2022

GEP

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show abstract

“…Currently, the researches of spray dust removal technology by researchers are centered on two aspects, i.e., experimental study on atomization characteristics of nozzle spray and numerical simulation of multiphase flow coupling in the spray field. As for the experimental study on atomiza-tion characteristics of nozzle spray, Kou et al [19] developed a new wind-spray precipitator based on rotary atomization. The rules between atomization efficiency and structure parameters such as rotating speed were obtained by experiments.…”

Section: Introductionmentioning

confidence: 99%

Experimental Research and Numerical Simulation of Ejector Precipitator in a Fully Mechanized Mining Face

Zhai

Zhang

et al. 2020

Arab J Sci Eng

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In order to effectively reduce the coal dust concentration in a fully mechanized mining face, this research used laboratory experiment, numerical simulation, and field test to conduct an in-depth exploration of the ejector precipitator installed at the low-level caving coal hydraulic support. Firstly, through the experimental platform in the laboratory, the dust removal effect of the nozzle with different structural parameters was tested, and the 3D particle dynamic analyzer was adopted to verify its atomization characteristics; then, the structural parameters corresponding to the nozzle in the best test results were obtained. Secondly, by using Fluent, the negative pressure flow field in the ejector barrel was numerically simulated. The results indicated that when the pressure of supply water was 12 MPa, the negative pressure value formed in the flow field was the lowest and the inspiratory velocity was the largest, which was conducive to dust removal. Finally, the tests of liquid–gas ratio and dust removal ratio were carried out in a fully mechanized mining face. The results showed that when the nozzle specification recommended by the experiment and the pressure of supply water recommended by the numerical simulation were used, the removal ratios of the total coal dust and the respirable coal dust were 89.5% and 91.0%, respectively, at the measuring point of the highest coal dust concentration. It indicates that the ejector precipitator has a good application effect in reducing the coal dust concentration in a fully mechanized mining face and improving the work environment of coal mine workers.

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“…used a surfactant‐based complex system to identify a dust depressor with optimal performance for underground coal dust control . Kou employed spray techniques to conduct research on the underground dust . However, there is very limited investigation concerning dust control during the process of coal transport, conveying and storage.…”

Section: Introductionmentioning

confidence: 99%

Preparation and chemical characterization of an environmentally‐friendly coal dust cementing agent

Zhou

Fan

2017

J of Chemical Tech & Biotech

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BACKGROUND: Coal dust is a major byproduct generated during coal mining production. The diffusion of coal dust not only causes severe environmental pollution, but also poses a serious threat to miners' health. How to provide effective control over coal dust remains one of the key topics of coal mine occupational safety research. RESULTS:The present study is focused on the preparation of an environmentally-friendly cementing agent applicable to the transportation, stacking and storage of coal. The product is characterized by a combination of infrared spectroscopy (FTIR), X-ray diffraction analysis (XRD), simultaneous thermal analyzer (TGA-DSC)and scanning electron microscopy (SEM) so as to analyze the microscopic reaction and structure of the product; single factor experiments focusing on the peeling strength are carried out to determine the optimal synthesis condition. CONCLUSION:A study on the characteristics of the cementing agent produced indicates that it has an effective dust suppression capability and extreme resistance against unfavorable application conditions.

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Experimental investigation on atomization and collecting efficiency of wind-spray dust controller and its parameters optimization

Cited by 6 publications

References 14 publications

A Comparative Assessment of On-Site Application Effects of Mine Dust Prevention and Control Technology

A Comparative Assessment of On-Site Application Effects of Mine Dust Prevention and Control Technology

Experimental Research and Numerical Simulation of Ejector Precipitator in a Fully Mechanized Mining Face

Preparation and chemical characterization of an environmentally‐friendly coal dust cementing agent

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