A research on dust suppression mechanism and application technology in mining and loading process of burnt rock open pit coal mines

Zhao, Xiaoliang; Zhao, Xueying; Han, Fangwei; Zi-ling, Song; Wang, Dong; Fan, Junfu; Jia, Zhengzhao; Gui-guo, Jiang

doi:10.1080/10962247.2021.1979123

Cited by 11 publications

(4 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The time is less than 4 d, and the holding time of the dust suppression effect increases as the concentration of the dust suppressant continues to increase. When the dust suppression concentration is 1.3, the dust suppression effect of more than 90% of the sample dust suppression effect retention time reaches 6 d. In order to solve the problem of severe dust pollution in the process of open-pit coal mining and filling, Zhao et al [31] proposed a dust suppression technology and determined the best mass-concentration ratio through the orthogonal test. The results of the wind tunnel simulation test of the dust suppressant configured with the optimal concentration ratio show that the suppression efficiency of the composite dust suppressant on the total dust and inhalable dust can reach 81.90% and 87.06%, respec- Figure 7 shows that the dust suppression efficiency of the dust suppressant solution will increase with the increase in the quality of modified starch in the dust suppressant.…”

Section: Dust Particle Size Distributionmentioning

confidence: 99%

Study on Crust-Shaped Dust Suppressant in Non-Disturbance Area of Open-Pit Coal Mine—A Case Study

Shen

Wang

et al. 2023

IJERPH

View full text Add to dashboard Cite

Dust pollution in open-pit coal mines severely restricts the green development of mines. Therefore, dust control has become an important requirement for the sustainable development of the mining industry. With the goal of dust pollution prevention and control in open-pit coal mines, this paper puts forward the concept of a non-disturbance area of an open-pit coal mine. It clarifies the characteristics of dust generation, the coverage area, and the dust particle size distribution characteristics of the non-disturbance area. Taking the dust control at the dump site as an example, the study comprehensively utilizes indoor tests and field tests to develop a dust suppressant for the dump site and determine its dust suppression efficiency and effective service cycle. The results show that the D10, D50, and D90 particle sizes of dust in the non-disturbance area are smaller than those in the disturbance area, and the difference in particle size of D90 is the most obvious. Gelatinized starch and non-ionic polyacrylamide, as the main components of the dust suppressant, can effectively reduce dust pollution in the dump; the optimal concentration is 1.0%, and the dust suppression service cycle is more than one month. The developed dust suppressant does not contain corrosive, toxic, or heavy metal elements. Although the application of a dust suppressant will cause plant growth to lag, it does not affect plant health. The research findings serve as a reference for the zoning treatment of dust in open-pit mines.

show abstract

Section: Dust Particle Size Distributionmentioning

confidence: 99%

Study on Crust-Shaped Dust Suppressant in Non-Disturbance Area of Open-Pit Coal Mine—A Case Study

Shen

Wang

et al. 2023

IJERPH

View full text Add to dashboard Cite

show abstract

“…Considerable climate data spanning nearly a decade reveal that the Hollinhe area experiences exceptionally cold winters, with temperatures plummeting to as low as −39 • C. This extreme cold makes it highly likely for water applied to mine roads to freeze. In light of these findings from the characterization of truck road dust samples in the North Open-Pit Mine, it was evident that the proposed dust suppressant must fulfill multiple functions concurrently, including wetting, moisturizing, preventing ice formation, and resisting freezing [12,13].…”

Section: Overall Road Dust Characterizationmentioning

confidence: 99%

Research and Industrial Test of Anti-Freezing and Dust Suppression Agent for Truck Roads in Open-Pit Mines in Inner Mongolia, China

Zhao,

Du,

Bharti

et al. 2023

Processes

Self Cite

View full text Add to dashboard Cite

To effectively resolve the inherent conflict between dust control and ice prevention on truck roads during North Surface Coal Mine winters, initially, via monomer preference experiments, the optimal monomers for wetting, moisturizing, and condensing functions were identified as sodium dodecylbenzene sulfonate (B), glycerol (N), and polyacrylamide (R). In parallel, through compound synergistic experiments, the constituent elements of an anti-freezing agent were determined, referred to as F. Subsequently, a four-factor three-level orthogonal test was conducted employing the monomers B, N, R, and the anti-freezing agent F. This evaluation focused on four principal control parameters: penetration rate, evaporation resistance, viscosity, and freezing point. The results led to the identification of the optimal antifreeze and dust suppressant formulation, designated as B2N3R1F3. Within the North Open-Pit Coal Mine, the self-developed dust suppressant was applied to the field test section. Multiple parameters were examined for 6 consecutive days, encompassing the water content of the pavement geotechnical soil, the concentrations of total dust and exhaled dust, and the particle size distribution of dust within this road section. The field test results show that: the average water content of the road surface within the dust suppressant test section measured at 12%; the dust reduction efficiency of total dust and exhaled dust is 93% and 91%; the proportion of dust particles with a size exceeding 500 μm increased by 54.6%. These comprehensive findings provide a empirical framework for the effective resolution of the practical challenge of simultaneously managing dust control and frost protection on truck roads within surface coal mines.

show abstract

“…Dust pollution has long been a significant environmental and occupational hazard problem in industrial and mining enterprises, and the associated health risks have become a critical concern [1][2][3]. As a result, the development and application of dust suppression technologies have attracted much attention in recent years, and spray dust suppression technology, as one of the most commonly used methods for controlling dust, has received extensive research attention [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

An Experimental Investigation of the Impact of Surface Tension and Viscosity on the Atomization Effect of a Solid Cone Nozzle

Yang

Wang

et al. 2023

Applied Sciences

View full text Add to dashboard Cite

To investigate the influence of surface tension and viscosity on the atomization performance of solid cone nozzles and improve their dust reduction efficiency in industrial and mining enterprises, this study employed a self-built PDPA dust-fog coupling experimental system to explore the effects of different surface tension and viscosity solutions on atomization performance from three aspects: axial, radial, and fog field distribution. The experimental results indicate that compared with surface tension, surface tension has a greater influence on droplet size and velocity in the axial direction. In the radial direction, increasing surface tension and reducing viscosity within a certain range can make the droplet size and velocity distribution more uniform. Additionally, surface tension and viscosity significantly affect the fog field distribution. It was found that a decrease in surface tension can result in a closer proximity of the droplet velocity and size expansion area to the nozzle, while an increase in viscosity can lead to a more prolonged stable area. Furthermore, optimizing the surface tension and viscosity can significantly enhance the efficacy of dust reduction for respirable dust. Consequently, the application of the aforementioned atomization principles to regulate the fog field characteristics of solid cone nozzles can effectively mitigate dust in the production process and augment the dust reduction rate of industrial and mining enterprises.

show abstract

A research on dust suppression mechanism and application technology in mining and loading process of burnt rock open pit coal mines

Cited by 11 publications

References 34 publications

Study on Crust-Shaped Dust Suppressant in Non-Disturbance Area of Open-Pit Coal Mine—A Case Study

Study on Crust-Shaped Dust Suppressant in Non-Disturbance Area of Open-Pit Coal Mine—A Case Study

Research and Industrial Test of Anti-Freezing and Dust Suppression Agent for Truck Roads in Open-Pit Mines in Inner Mongolia, China

An Experimental Investigation of the Impact of Surface Tension and Viscosity on the Atomization Effect of a Solid Cone Nozzle

Contact Info

Product

Resources

About