Preparation and characteristics of a multifunctional dust suppressant with agglomeration and wettability performance used in coal mine

Zhou, Gang; Ma, Yunlong; Fan, Tao; Wang, Gang

doi:10.1016/j.cherd.2018.02.021

Cited by 121 publications

(24 citation statements)

References 29 publications

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“…Therefore, dust control or removal of NC is crucial in chemical industries. Commonly applied technologies and materials to control dust generation and dispersion include water injection or spraying for dust reduction (not adapted for metal powders or water sensitive chemicals), a variety of precipitators (installation of the anti‐electrostatic device for flammable dust), ventilation, and chemical dust suppressants (CDSs) . Among these technologies and materials, CDSs exhibit greater prospects because of their low price, simple preparation, and wide range of applications.…”

Section: Introductionmentioning

confidence: 99%

“…Commonly applied technologies and materials to control dust generation and dispersion include water injection or spraying for dust reduction (not adapted for metal powders or water sensitive chemicals), a variety of precipitators (installation of the antielectrostatic device for flammable dust), ventilation, and chemical dust suppressants (CDSs). 13 Among these technologies and materials, CDSs exhibit greater prospects because of their low price, simple preparation, and wide range of applications. CDSs comprise hygroscopic materials and surfactants that are used to promote the wettability of water and moisture retention capacity for the agglomeration of particles, thereby governing dust generation and dispersion.…”

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confidence: 99%

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Inhibitory effects of three chemical dust suppressants on nitrocellulose dust cloud explosion

et al. 2020

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Three types of self‐prepared chemical dust suppressants (CDSs) were investigated for their inhibitory effects on nitrocellulose (NC) cloud dust explosion. The results revealed that NC is extremely sensitive to electric sparks and has a high explosion intensity. CaCl2‐CDS effectively increased the particle size to control fly dust substantially inhibiting dust cloud explosions. However, both Na2SO4‐CDS and MgCl2‐CDS exhibited poor abilities and even promoted explosion. Therefore, neither Na2SO4‐CDS nor MgCl2‐CDS is recommended as a CDS for NC. Inappropriately using CDSs may engender severe explosions. Furthermore, a mechanism underlying NC dust cloud combustion and explosion was proposed. NC has three stages of heat release: autoxidation, thermal decomposition, and combustion. Thermal decomposition, combustion, and explosion were triggered depending on the energy provided from autoxidation. CaCl2‐CDS inhibited only combustion. This study reveals the mechanism underlying NC dust cloud explosions and provides useful information for the development of more optimized CDSs.

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

Inhibitory effects of three chemical dust suppressants on nitrocellulose dust cloud explosion

et al. 2020

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“…Micro CT is one of today's most popular and fastestgrowing types of computed tomography technology, and it is widely applied to the fields of micro and nano manufacturing, new materials and electronic science. In comparison with macrostructure CT for medical detection, micro CT has high resolution (as high as 0,5 ~ 1 μm) that enables measurement and analysis of the microstructure of small-sized materials and products [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation Analysis of Water Injection Seepage Law in Micro Porous Structure of Coal

Zhou¹,

Qiu

Zhang

et al. 2020

Teh. vjesn

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In this paper, a nano Voxel X-ray 3D microscope is used to scan the long flame coal samples and to reconstruct the 3D pore structure by the use of microscopic computed tomography. With image segmentation technique, a model of micro-pore structure of coal is obtained from the reconstructed coal. With different planes selected as seepage inlets, a numerical simulation of low-pressure water seepage is conducted. Studies show that water pressure gradually decreases along the direction of water seepage and reaches the maximum at the pore-pipes with good connectivity near the inlet. Due to the difference between the structure and development direction of pores in the three dimensions, there is an optimal seepage outlet that is most appropriately corresponding to each seepage inlet. When different planes are selected as seepage inlets, the velocity of each seepage outlet is positively correlated with the seepage mass flow rate at the outlet.

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“…During coal mining process in China, large amounts of dust are usually generated. ese dust accumulations are not only considered to be serious threats to the health of miners but also have negative impacts on the overall safety of the production processes [1][2][3][4][5][6]. According to the China National Institute of Occupational Health and Poison Control, new cases of pneumoconiosis in coal workers (CWP) totaled 23,152 in 2013 [7].…”

Section: Introductionmentioning

confidence: 99%

“…erefore, it has become quite obvious that there are serious drawbacks among the abovementioned approaches. Meanwhile, the applications of chemical dust suppression methods have exhibited promising prospects in the research field concerning dust control in coal mines [2,18].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigations and Field Applications of Chemical Suppressants for Dust Control in Coal Mines

Liao

Feng

Fan

et al. 2018

Advances in Materials Science and Engineering

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It is known that high dust concentrations are severely hazardous to health of miners and the safe operations of coal mines. The results of the suppressions of coal dust via chemical dust suppressant methods have been of critical significance, and these methods have been widely applied in coal mines. In this research study, a type of complex dust suppressant composed of surfactants, synergists, and cellulose was prepared. The prepared suppressant was characterized by a high wetting ability and adhesive capacity. The results of the performance tests of this study’s proposed complex dust suppressant showed that its dust sedimentation time was only four seconds, which was observed to be much shorter than that of water alone. Also, the proposed suppressant displayed a viscosity which was 25 times that of water. In this study’s field tests, the proposed complex dust suppressant was used for dust control in a mining roadway of the Zhangcun Coal Mine. The field test results revealed that the average suppression efficiencies of the total dust and respirable dust had reached 89.2% and 87.7%, respectively. Furthermore, a 44.5% increase in the control of the total dust had been observed, and a 65.6% increase in the control of the respirable dust had been achieved with the proposed method, when compared with the results of the previously used water curtain technology.

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Preparation and characteristics of a multifunctional dust suppressant with agglomeration and wettability performance used in coal mine

Cited by 121 publications

References 29 publications

Inhibitory effects of three chemical dust suppressants on nitrocellulose dust cloud explosion

Inhibitory effects of three chemical dust suppressants on nitrocellulose dust cloud explosion

Numerical Simulation Analysis of Water Injection Seepage Law in Micro Porous Structure of Coal

Experimental Investigations and Field Applications of Chemical Suppressants for Dust Control in Coal Mines

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