Dust Suppression Research Articles

Study on protein-polysaccharide environmental foam dust suppressant based on Maillard reaction

Given the problems of traditional dust suppressants, such as high cost, poor environmental protection and degradation, this study developed a GEL-GG/OB-2 foam dust suppressant with high polymerized reticulation structure using polymer bio-based materials gelatin (GEL) and guar gum (GG) as the main materials for the Maillard reaction. The results of the orthogonal experiment showed that 0.1 % gelatin and 0.2 % guar gum reacted best at a temperature of 95 °C for 45 min, with a viscosity of 12.3 mPa·s. After drying, SEM observed that the surface formed a layer of compact film, and the hardness of the cemented coal layer could reach 79 HA. The contact angle with the coal sample after spraying for 3 s was 1.6°. It was found that the gelatin reacted with the polysaccharide hydrolysate by microscopic experiments. The affiliation of sugar molecules with gelatin molecules led to a change in the spatial conformation of the proteins, which led to the generation of the highly cross-linked polymer GEL-GG. The inhibition rates of PM2.5 and PM10 tested by the simulation test platform could reach 97.3 % and 98.2 %, respectively. In addition, GEL-GG/OB-2 is degradable and non-polluting, providing a feasible solution for the efficient suppression of coal mine dust.

Study on preparation and properties of antifreeze compound road dust suppressant

Open-pit mine pavement dust dries and breaks easily. As such, a composite pavement dust suppressant with good wettability, moisturizing, coagulation, and antifreezing properties in winter was investigated. Monomer screening and orthogonal experiments were conducted, using evaporation rate, permeability rate, viscosity, and freezing point as evaluation indexes. Consequently, a dust suppressant solution is a mixture of glycerol (GLY), sodium dodecylbenzene sulfonate (SDBS), polyacrylamide (PAM), compound propylene glycol (PG), and potassium acetate (PA). The characteristics of the dust suppressant and its interaction mechanism with road dust were measured and analyzed. The results showed that the optimal ratio of the antifreeze-type composite dust suppressant is 3%GLY, 0.30%SDBS, 0.07% PAM, and 50%PG + 10%PA; the contact angle is 27.62°, which can effectively wet coal dust. Moreover, it easily forms hydrogen bonds with water molecules to release free -OH, which increases the oxygen-containing functional groups in the dust. The maximum viscosity is 25.4 mPa·s, and the hydrophobic groups adsorbed on the surface of the dust can condense and agglomerate the dust to form large particles, and effectively inhibit the occurrence of dust. It freezes at − 34.2 ℃, resists a temperature of − 30 ℃ without freezing, and improves dust suppression efficiency and antifreezing effect in cold areas.

Combined use of chemical dust suppressant and herbaceous plants for tailings dust control.

Tailings dust can negatively affect the surrounding environment and communities because the tailings are vulnerable to wind erosion. In this study, the effects of halides (sodium chloride [NaCl], calcium chloride [CaCl2], and magnesium chloride hexahydrate [MgCl2·6H2O]), and polymer materials (polyacrylamide [PAM], polyvinyl alcohol [PVA], and calcium lignosulfonate [LS]) were investigated for the stabilization of tailings for dust control. Erect milkvetch (Astragalus adsurgens), ryegrass (Lolium perenne L.), and Bermuda grass (Cynodon dactylon) were planted in the tailings and sprayed with chemical dust suppressants. The growth status of the plants and their effects on the mechanical properties of tailings were also studied. The results show that the weight loss of tailings was stabilized by halides and polymers, and decreased with increasing concentration and spraying amount of the solutions. The penetration resistance of tailings stabilized by halides and polymers increased with increasing concentration and spraying amount of the solutions. Among the halides and polymers tested, the use of CaCl2 and PAM resulted in the best control of tailings dust, respectively. CaCl2 solution reduces the adaptability of plants and therefore makes it difficult for grass seeds to germinate normally. PAM solutions are beneficial for the development of herbaceous plants. Among the three herbaceous species, ryegrass exhibited the best degree of development and was more suitable for growth in the tailings. The ryegrass plants planted in the tailings sprayed with PAM grew the best, and the root-soil complex that formed increased the shear strength of the tailings.

Study of spray atomization law and dust suppression effect of a wet dust catcher on a hydraulic support

To control effectively large dust concentrations and their diffusion during coal cutting and shifting of shearers at fully mechanized mining faces, a wet dust catcher on a hydraulic support was developed. The spray nozzle suitable for wet dust collection devices was optimized through spray experiments, and the effects of the spray pressure Pw and nozzle tilt angle θ on the droplet size and fog field concentration were analyzed with Fluent. The numerical simulation results show that the wide-angle solid cone nozzle (with an X-type swirl core) with a diameter of 2.4 mm, water pressure Pw of 6 MPa, and nozzle tilt angle θ of 10° toward the windward side can form a better water curtain. Finally, the wet dust catcher was applied at a 22104 fully mechanized mining face of the Shangwan Coal Mine. The dust removal rate of the shearer driver reached 86.20 %, and that at other positions reached 85 % on average. Evidently, the hydraulic support wet dust catcher can effectively control the diffusion of coal dust at fully mechanized mining faces.

Study on dynamic characteristics of anionic surfactants containing ethoxy groups wetting bituminous coal

Coal dust restricts coal mine safety and green production. Wet dust removal is widely used in coal mining, processing and transportation. High-efficiency dust suppressants help control coal dust and improve the working environment. The wetting behaviors of dust suppression droplets on coal affect the dust reduction efficiency. In order to select high-quality and efficient water-based materials, four ethoxy-containing surfactants with similar structures, fatty alcohol ether sulfate (AES), lauryl alcohol sulfosuccinate disodium (MES), fatty acid methyl ester ethoxylates (FMEE) and fatty acid methyl esters ethoxylate sodium sulfonate (FMES), are selected to prepare solutions with different concentrations. Through the droplet impact wetting experimental system, the dimensionless spreading coefficient of droplets is compared. The results show that the spreading behavior of the four surfactant-containing droplets is better than that of distilled water droplets, and the maximum dimensionless spreading coefficient follows the rule of AES > MES > FMES > FMEE >distilled water. The maximum dimensionless spreading coefficient of the droplet first increases sharply with the increase of the concentration, and then increases slowly when the concentration reaches the critical micelle concentration (CMC). The adsorption configuration of water-surfactant-coal system is simulated by molecular dynamics (MD) simulation. The relative concentration distribution of each component and the mean square displacement (MSD) of water molecules are analyzed. The interaction energy of the system is calculated. The simulation results verified the effectiveness of the impact wetting experiment results.

Investigate the optimum design of atomizing nozzles for coal dust suppression by using multifactor level response surface methodology

Mechanized coal extraction generates substantial dust, adversely affecting the physical and mental wellbeing of underground workers and degrading the operational environment. To address the limitations of traditional spray systems, which often suffer from poor atomization effects and limited ability to withstand wind interference, the innovative vortex atomizing nozzle has been developed specifically for dust suppression. This advanced solution was rigorously tested through detailed numerical simulations and comprehensive experimental investigations. These studies focused on examining the impact of critical parameters, including the velocity at the airflow director's exit, the angle of the exit hole, and its radius, on the efficacy of dust suppression. Findings highlighted the paramount importance of the airflow director's exit velocity in enhancing dust removal, with the exit hole's radius having the least impact. Optimal conditions for dust suppression were identified as an airflow director exit velocity of 20 m/s, an angle of 60°, and a radius of 0.6 mm. Field validations under these optimum parameters demonstrated unparalleled dust control efficiency, achieving a reduction in coal dust concentration exceeding 90 %. This apparatus offers a highly effective, user-friendly solution for comprehensive coal dust management across various mine locations.

Numerical studies on the effects of the hybrid cooling and dust suppression solution in hot fully-mechanized mining face

With the increasing depth of coal mining, the hot and humid environment at the mining faces is becoming more severe. Mining in these conditions, coupled with the hazardous effects of coal dust, poses a significant risk to the health of coal miners. To improve the working conditions in underground coal mines, this study proposes a hybrid solution that combines evaporative cooling and dust suppression in fully mechanized working faces. Numerical models of the mining face are also created to simulate the cooling effects of the proposed solution. Additionally, the migration laws of water droplets from the spray system are also studied. The results indicate that the proposed solution can effectively improve thermal environments and suppress coal dust. This research can enhance the workplace safety in underground coal mines and provide valuable insights for addressing high airflow temperatures and concentrated dust levels.

Dynamic wetting characteristics of two droplets impacting a spherical dust particle

The removal of dust based on water misting is one of the most effective measures for dust control, and the basis of this method lies in the liquid–solid impact behavior. To further improve the dust removal efficiency, in this work, the removal mechanism was studied at the microscopic level, and the dynamic impact between two water droplets and a spherical dust particle was simulated using the coupled level-set/volume-of-fluid (CLSVOF) method. The optimal parameter ranges for micron-level dust removal were determined through the method of variable control, and the reliability of the obtained results was experimentally verified. When two droplets continuously or simultaneously impact a spherical particle, the liquid film formed undergoes deformation phenomena such as fusion, rupture, stretching, contraction, and fragmentation. The liquid film is more likely to break at higher droplet velocities, leading to the filling of the gas film and hindering the wetting process. The optimum contact angle and velocity range of the liquid droplets to completely encapsulate the dust particles were found to be θ = 2 and V = 10–20 m/s, respectively. The experimental results also showed that for the same dust particle size, the dust removal efficiency initially increased but then decreased with increasing dust concentration. The optimum dust removal efficiency of 98.1 % was achieved for θ = 2 and V = 10 m/s. This study sheds new light on the dust removal mechanism of water mist-based dust removal technologies and can aid in the design and parameter optimization of more effective dust suppression systems.

Natural polymers and electrolytes enhanced coal dust suppression and explosion prevention: New insight from experimental and molecular dynamic simulations

This paper expressed a new insight including experimental and molecular dynamic simulations to illuminate multi-scale mechanisms of coal dust suppression and explosion prevention when applying natural polymers and electrolyte. Results reveals that the addition of natural polymers and electrolyte achieve a maximum 11.85% improvement on dedusting rate and 36.36% improvement on suppression speed when compares with the individual application of SDBS, the MIE and MITC also receives a maximum 1.5 times and 23.58% improvement as well. This achievement is jointly affected by the wetting and agglomerating behaviour between suppressant and coal particles. The chain-like ionic structure and two benzene rings offer LS-Na exhibits good planarity in space and can vertically embed into the surface of coal particles. The lower diffusion coefficient and larger wetting area brings LS-Na stronger ability to help SDBS adsorbing on the coal particles and therefore exhibit better wettability. However, higher electrostatic potential difference endows CMC-Na stronger ability to absorb H2O molecules to form more viscous liquid environment. More hydrogen bond and higher bond energy of CMC-Na could promote the agglomeration of coal particles. The kinetic analysis reveals that the activation energy of coal particles treated by ternary suppressant is higher than that of binary ones. With the help of neutralization reactions between Na· and Cl· generated by molten NaCl and H· and OH· generated by the combustion, the reactivity of coal particles has been diminished and the combustion chain has been interrupted.

Wetting and aggregation mechanisms of coal molecules via XTG and SDBS based on molecular simulation

To study the interaction process of sodium dodecyl benzene sulfonate (SDBS) and xanthan gum (XTG) molecules in a composite dust suppressant and its influence mechanisms on the wettability and agglomeration characteristics of bituminous coal dust, Material Studio software was used to establish water–XTG binary system models, water–SDBS–XTG ternary system models, and water–SDBS–XTG–coal quaternary system models. Then, molecular dynamics simulations were performed through angular distribution, relative concentration distribution, mean squared displacement (MSD), and interaction energy to study the interaction mechanism between SDBS and XTG and the change in wettability of coal dust. Results showed that the configuration in the binary system changed after stabilization, and SDBS transformed from a disordered state into a directional arrangement with the head group oriented toward the liquid phase and the tail group oriented toward the gas phase. In the ternary system, the head group of SDBS interacted with the XTG molecules, and the XTG wound into a helical structure, reducing the viscosity of the solution. With an increase in the number of SDBS molecules, the angle of the head group of SDBS and the tail chain of SDBS increased to 113.95°. The number of H bonds in the system increased from 1676 to 1697. In the quaternary system, the rate of change of the diffusion coefficient continuously increases. The absolute value of the interaction energy increased from 5920.48 kJ/mol to 9295.35 kJ/mol. The higher the concentration of SDBS, the better the adsorption effect, and the more stable the molecular configuration. The number of H bonds and the distribution area of the overlapping region between water and coal gradually increased, indicating that the larger the area where water molecules could penetrate into the coal molecules, the better the wetting effect on coal. This study reveals the intermolecular interaction process and the mechanisms of coal dust wetting and agglomeration in a composite dust suppressant. It provides theoretical support for the application of this composite dust suppressant.

Modified sodium alginate-based three-dimensional network hydrogel dust suppressant: Preparation, characterization, and performance

Chemical dust suppression is typically associated with high economic costs, unclear efficacy, and poor degradability. In this study, sodium alginate (SA) was extracted from kelp and cross-linked with polyvinyl alcohol (PVA) and polyacrylamide (PAM). Sulfonated castor oil (CAS) was subsequently added to generate a three-dimensional network hydrogel dust suppressant (PVA-SA-PAM/CAS). Using single-factor experiments, the optimal reaction temperature (60 °C) and dosages of PVA, PAM, and the cross-linking agent (2.5, 4.5, and 0.1 g, respectively) were determined. The viscosity and compressive strength of the prepared hydrogel were 86 mPa·s and 218 kPa, respectively, which meet the requirements for mine dust suppression. Various analyses revealed the hydrogel's reaction process and microstructure changes. Additionally, thermogravimetric experiments proved that the hydrogel had good thermal stability. The specific surface area and pore size of the hydrogel were 0.0278 m2/g and 11.8 nm, respectively, improving its adsorption capacity. Additionally, PVA-SA-PAM/CAS exhibited a good water retention rate. The dust suppression efficiency of PVA-SA-PAM/CAS was >98 % under strong winds (12 m/s). Moreover, the degradation rate of PVA-SA-PAM/CAS was 37 % after eight cycles (56 d) under environmental conditions. Therefore, PVA-SA-PAM/CAS exhibits good wetting, dust suppression, and degradation properties, which can effectively alleviate mine dust pollution.

Study on the Water Absorption Characteristics of Anthracite Particles after Immersion in Water.

Reducing pollution caused by coal dust has always been a hot issue in the coal mining industry, and the water absorption of coal particles plays an important role in dust reduction. To study the relationship between different immersion time and the water absorption of coal particles, the substance content of coal particles after immersion was analyzed and water absorption characterization of coal particles was carried out by X-ray diffraction (XRD), water absorption calculations, and water absorption measurements. The results indicate that immersion can alter the material content of coal particles, leading to a decrease in the content of soluble mineral kaolinite, thereby affecting the wettability of coal particles. Notably, the longer the immersion time, the higher the water absorption rate of the particles, indicating a more significant water absorption effect. Furthermore, there is a negative correlation between particle sizes and water absorption of coal particles. The research results provide a theoretical reference for reducing coal dust pollution and improving the efficiency of dust suppression through spray.

Study on preparation and properties of mineral compound suppressant

To address the problem of coal mine dust pollution, the performance characterisation method was used to optimise the C3 dust suppressor. On this basis, two dust suppressants suitable for different climatic conditions were prepared by adding 8 groups of OP-10 and SDS surfactants with different concentrations, namely D5, which is suitable for dry areas and has excellent permeability, and E6, which is suitable for wet areas and has excellent resistance to rain erosion. The results show that compared with single dust suppressant, D5 with 0.5% OP-10 and E6 with 0.6% SDS have neutral PH, the rate of wind erosion is lower than 0.2% at 20 m/s, and the cured layer shell is well preserved with good wettability, adhesion and curability. Observed by scanning electron microscope (SEM), the coal dust particles bonded tightly after spraying D5 and E6, which could effectively improve the dust suppression efficiency.

Optimal Preparation and Performance Study of Eco-Friendly Composite Chemical Dust Suppressants: A Case Study in a Construction Site in Chengdu.

To mitigate dust pollution generated during various stages of construction activities and reduce the environmental and health hazards posed by airborne dust, this study utilized hydroxyethyl cellulose, glycerol, and isomeric tridecyl alcohol polyoxyethylene ether as raw materials to formulate a composite chemical dust suppressant. The properties of the dust suppressant were characterized through analysis. Employing single-factor experiments, the optimal proportions of the binder, water-retaining agent, and surfactant for the composite dust suppressant were determined. Subsequently, a response surface model was established, and, after analysis and optimization, the optimal mass ratios of each component in the composite dust suppressant were obtained. Under optimal ratios, the physicochemical properties and wind erosion resistance of the composite dust suppressant were analyzed. Finally, the practical application of the suppressant was validated through on-site trials at a construction site. This study revealed that the optimal formulation for the dust suppressant was as follows: 0.2% hydroxyethyl cellulose, 2.097% glycerol, 0.693% isomeric tridecyl alcohol polyoxyethylene ether, and the remainder was pure water. The suppressant is non-toxic, non-corrosive, environmentally friendly, and exhibits excellent moisture retention and bonding properties compared to water. The research findings provide valuable insights for addressing dust pollution issues on construction sites.

Molecular mechanism of the degree of influence of ethoxy and alkyl structures on the wettability of low-rank coal

The mechanisms of the effects of decyl polyoxyethylene ether (DEO6), decyl polyoxyethylene ether (DEO8), and aliphatic alcohol polyoxyethylene ether (AEO6) on the wettability of coal dust from low-rank coal have been investigated in this study. The aim is to reveal the difference in the degree of influence of the structure of the alkyl and ethoxy groups. The surface tension test showed that AEO6, which can form a soft chain structure, could reach the critical micelle concentration (CMC) the fastest, followed by DEO6, and DEO8, which has the strongest polar effect, the slowest. The contact angle, settling time, and water retention experiments revealed that the AEO6-treated coal dust had the strongest wettability and water retention, which could effectively inhibit the coal dust and weaken the possibility of its secondary dust. Fourier transform infrared (FTIR) spectroscopy reveals that AEO6 with long alkyl chains can produce strong nonpolar effects, and in the process of adsorption with coal dust, it can produce strong hydrophobic bonding with nonpolar groups on the surface of low-rank coal, and finally form a directional adsorption conducive to the enhancement of wettability. Scanning electron microscope (SEM) showed a trend from DEO6-coal, DEO8-coal, and AEO6-coal appearing to have surfaces that sequentially become flatter and denser, with a gradual decrease in the number of loose particles and a weakening of the pore structure. Molecular dynamics (MD) simulations agree with the above experimental results. That is, the interaction between water molecules is stronger in the AEO6-modified coal system, followed by the DEO8 system and weakest in the DEO6 system. And the advantage of DEO8-coal is weaker than that of AEO6-coal but better than that of DEO6-coal. Based on the above experimental and simulation results, it can be concluded that the ability of the alkyl structure to influence the wettability of surfactant-modified coal dust is higher than the structure of the ethoxylate group, which will provide theoretical guidance for coal dust management and dust suppression.

Самовоспламенение пылегазовоздушных смесей в атмосфере горных выработок

The underground mining of coal deposits is usually accompanied by manifestation of a number of negative factors, one of which is the presence of dust and gas-air mixtures consisting of fine coal dust, methane released from the broken coal and the air of the mine atmosphere. Despite modern methods and means of dust suppression and dust collection, it has not yet been possible to achieve complete neutralization of dust and gas-air mixtures in the atmosphere of mine workings. The negative effects of dust and gas-air mixtures can manifest themselves in different ways. On the one hand, deposits of coal dust in the worked-out spaces, under certain conditions, form foci of spontaneous combustion, which are the causes of endogenous fires. On the other hand, dust and gas-air mixtures are predisposed to ignition from external sources or to spontaneous ignition followed by combustion in the form of deflagration, which, under certain conditions, turns into detonation, spreading in the atmosphere of mine workings at supersonic speed. This article considers a nonstationary one-dimensional problem of selfignition of dust and gas-air mixtures in the air flows of mine workings. The temperature and the period of spontaneous ignition of dust-gas-air mixtures are found based on the solution of this problem, expressed numerically using the Geer method. An analysis of the mixture self-ignition process is performed and some patterns of the influence of the parameters of mixtures on the period of their self-ignition are revealed.

Review on Dust Control Technologies in Coal Mines of China

China faces a challenge in the sustainable development of the coal industry due to pneumoconiosis problems. Dust control technologies are crucial for safe production and miners’ health, ensuring the industry’s longevity. This article reviews the development process of dust prevention and control in underground coal mines in China, summarizes various technologies, and divides them into dust suppression, open-space dust reduction, and mine dust collectors according to different stages and environments of use. In dust suppression technologies, coal-seam water injection can reduce total dust generation by 60%, wet rock drilling can reduce drilling dust in the presence of stable water sources and high-pressure bearing equipment, and water-seal blasting can reduce blasting dust by 50–70%. In open-space dust reduction technologies, spray dust suppression can remove total dust by 50–95% and the removal efficiencies of foam dedusting for total and respirable dust are reported to reach 95% and 85% under the right conditions, respectively. In dust collector technologies, dry collectors can remove 80–95% of total dust. Wet collectors achieve up to 90% efficiency, dependent on water supply and waste processing. This article also discusses vapor heterogeneous condensation technology as a promising method for improving respirable dust removal in humid mine environments.

Design and Analysis of Fugitive Dust Emission Collector

This creative project explores the design and analysis of a novel fugitive dust emission collector, with a focus on its application in stone crusher units and crematorium facilities. Recognizing the detrimental health and environmental impacts of dust emissions, this project proposes a multifaceted approach. The core solution involves a combined system, this captures and removes larger dust particles through established methods like cyclones or bag houses. Dry fog dust suppression system, this technology utilizes atomized water droplets to suppress smaller fugitive dust particles, preventing their airborne spread. This project delves into the specific needs of stone crusher units and crematorium facilities. Utilizing CAD software, 3D models of the emission collector will be created, incorporating considerations like material selection, efficiency and airflow optimization, integration with existing infrastructure. Computational fluid dynamics (CFD) analysis by Simulating airflow patterns and dust capture efficiency within the collector. Assessing the collector's ability to withstand operational loads and environmental factors. This project aims to achieve, reduced fugitive dust emissions, enhanced environmental compliance, improved operational efficiency. Overall, this creative project showcases an innovative approach to fugitive dust control, potentially leading to improved environmental and public health outcomes in diverse industrial settings

Effects of molasses-based microbial dust suppressant on soil dust and microbial community

This study aims at the practical needs of soil dust control and molasses resource utilization. By adding molasses to the soil and combining it with the components of microbial dust suppressants, it explores its impact on the surface soil dust suppression performance and microbial communities. The results show that after spraying treatment, the soil surface hardness is positively correlated with the molasses concentration, the surface hardness is the highest (41.14 HA) when the molasses concentration is 10%; the anti-wind erosion effect shows a trend of first increasing and then decreasing with the molasses concentration, the anti-rain erosion effect needs to be improved; microbial community analysis show that molasses significantly affected the relative abundance of soil microbial community, and appropriate addition (1%) could optimize the microbial community structure and enhance the functions of carbohydrate and energy metabolism pathways, and the abundance of pathogenic species increased when the molasses concentration was higher (above 5%). Therefore, considering the dust suppression effect and environmental safety, a dust suppressant with a molasses concentration of 1% is more suitable for dust suppression. However, the synergistic pathway and mechanism of dust suppression through the interaction between molasses and MICP technology need to be further explored.

An experimental investigation on the foam proportion for coal dust suppression in underground coal mines

Coal dust presents a grave peril to the well-being of miners and mine safety. In the absence of preventive measures, the concentration of dust in the working area can exceed one thousand milligrams per cubic meter. Foam-based dust removal, owing to its noteworthy merits such as minimal water consumption and high efficiency in removing dust, has emerged as one of the prevailing technologies for dust elimination. To mitigate dust generation during excavation, extensive investigations have been undertaken to explore the impact of foam reagent solution ratios on the efficacy of foam dust removal. By meticulously selecting surfactants, the consequences of varying concentrations and combinations of foam reagents, wetting reagents and foam stabilizers on foaming performance are examined. Valuable insights into the functional relationship between initial foam volume, volume decay rate, and foam reagent concentration are obtained. Furthermore, an in-depth analysis is conducted to probe the influence of wetting reagent addition on coal dust wetting, foam formation, and stability, thereby elucidating the functional connection between wetting time and the concentration of the wetting reagent. Additionally, the ramifications of stabilizer addition on foam stability and other relevant foam properties undergo comprehensive exploration, ultimately leading to the discovery of the functional relationship between foam performance and stabilizer concentration. Notably, experimental findings demonstrate that the optimum ratio for the foam reagent solution is AOS: SDS: STPP: CDEA: water=5:1:4:1:9989. This specific composition exhibits superlative foam foaming performance, stability, and wetting characteristics. Following a meticulous evaluation of gas supply volume, the optimal foam proportion is determined to be a foam reagent solution of 8 m3/h accompanied by a gas supply rate of 100 m3/h. The dust suppression efficiency of the foam produced by the optimal foam proportion reaches an about 97%, substantiating its effectiveness in dust removal.