Preparation and experimental dust suppression performance characterization of a novel guar gum-modification-based environmentally-friendly degradable dust suppressant

Zhang, Haihan; Nie, Wen; Wang, Hongkun; Qiu, Bao; Hu, Jin; Liu, Yanghao

doi:10.1016/j.powtec.2018.08.011

Cited by 106 publications

(33 citation statements)

References 36 publications

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“…Chemical dust suppression is a novel and effective approach to prevent dust dispersion. As the advent of chemical dust suppression method, the research and application concerning the chemical dust suppressant is undergoing a rapid advancement and innovation . In recent years, most domestic and overseas research on dust suppressant is focused on making the product more green, environmentally friendly and efficient .…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of a novel environmentally friendly coal dust suppressant

Nie

Zhang

et al. 2018

J of Applied Polymer Sci

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To mitigate the dust dispersion pollution in the open-pit coal mines, this study experimentally develops a novel environmentally friendly coal dust suppressant. The experiment uses naturally biodegradable soybean protein isolate (SPI) as the main material and utilizes anion surfactant sodium dodecyl sulfate (SDS) to modify SPI. In the carboxymethylcellulose sodium and sodium silicate and other auxiliary agents, this process produces gives rise to the SDS-SPI coal dust suppressant. Experimental characterization of the developed dust suppressant reveals that the viscosity of the 5% dust suppressant solution can reach 24.6 mPa s. Correspondingly, the compressive strength reaches 0.48 MPa, and the dust suppression efficiency can reach 93.47% with the presence of force 9 wind. Furthermore, this study uses Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscope (SEM) to analyze the dust suppression mechanism of the developed dust suppressant. It is observed that a layer of compact hardened shell is formed at the surface of the coal powder treated with the newly developed dust suppressant. Also, there exists a strong cementing effect among dust particles, yielding a decent cementing performance. Therefore, the present dust suppressant can effectively suppress dust dispersion in the open-pit coal mines, allowing a mitigation of the environmental pollution.

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of a novel environmentally friendly coal dust suppressant

Nie

Zhang

et al. 2018

J of Applied Polymer Sci

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“…e surface tension of the surfactant complex solution of different types and proportions was investigated [42][43][44]. He et al studied the effects of inorganic salts such as NaCl, CuCl 2 , and ZnSO 4 on the surface tension of sodium dodecyl sulfate (SDS) solution.…”

Section: Introductionmentioning

confidence: 99%

An Experimental Study on Wetting of Coal Dust by Surfactant Solution

Jiang

Wang

Liu

et al. 2020

Advances in Materials Science and Engineering

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Surfactants can improve the wetting performance of the dust-reduction spraying water, thus improving the dust-reduction effect by spray. In this study, the performance of surfactant solution in wetting coal dust was investigated through experiments. In addition, the effects of surfactant type, mass fraction, metamorphic degree of coal, particle size, and additives were investigated. According to the results of surface tension experiments, the surface tension of the solution decreased with the increase of the concentration of surfactant. However, after reaching CMC, the surface tension did not have significantly decrease. SDBS and OP-10 had higher efficiency in decreasing the surface tension than the other two types of surfactants. The addition of sodium sulfate additives can further reduce the surface tension of the surfactant solution by a limited range. The coal dust wetting experiment showed that with the increase in the concentration of the surfactant, the contact angle of the droplets on the coal dust tablet was continuously reduced, and the wettability of the solution was continuously improved. The wettability of the OP-10 solution was optimal. At the same concentration, the minimum contact angle can be obtained in the OP-10 solution. As the contact angle of the coal dust increased, the growth rate in the coal dust reverse osmosis moisture absorption of the surfactant solution relative to the pure water increased. After the addition of sodium sulfate, the reverse osmosis moisture absorption of coal dust increased to varying degrees. In addition, as the concentration of additives increased, the moisture absorption of coal dust increased.

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“…At present, workplace pollution has become an important scientific research topic, which is of vital significance to the health of workers. Specifically, coal dust is one of the worst polluted disasters in the process of coal cutting [1][2][3]. If no dust removal strategy is adopted, the concentration of the coal dust can rise to 8000-10,000 mg/m 3 in a fully mechanized mining face, which has caused irreparable harm to the physical and mental health of the coal miner [4][5][6].…”

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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Preparation and experimental dust suppression performance characterization of a novel guar gum-modification-based environmentally-friendly degradable dust suppressant

Cited by 106 publications

References 36 publications

Preparation and characterization of a novel environmentally friendly coal dust suppressant

Preparation and characterization of a novel environmentally friendly coal dust suppressant

An Experimental Study on Wetting of Coal Dust by Surfactant Solution

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

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