Particle Sticking Research Articles

Particle aggregation and the grinding limit in high energy ball mill

Dust aggregates — clusters of individual particles — are formed during mechanochemical processing of brown coal in a planetary ball mill. The aggregate structure can be identified by comparing the average sizes of aggregates and individual particles. We showed that dust aggregates are generally arranged in a regular way: the number of individual particles located along the aggregate coincides with the number of particles located across the aggregate. Power of power-law distribution of the monomers per aggregate revealed that individual particles stick together in extremely dense clusters. The average number of monomers per claster is ∼104. In addition, it turned out that the dependence of the monomer's “stickiness” on applied energy dose has a kink simultaneously with other characteristics of the mechanochemical process (the monomer size and the chemical reaction depth). Speaking using mechanochemistry terms, it corresponds to transition from the brittle grinding mode to the plastic deformation mode after reaching the grinding limit.

Effect of geosynthetic reinforcement pull-out on the surface characteristics of facing blocks

The friction coefficient between the facing blocks and the geosynthetic reinforcement is one of the parameters in MSE design. To obtain this parameter, specific tests are foreseen in the standards. However the pull-out process of the geosynthetic reinforcement has an effect on the facing block surfaces. In this study the roughness of the precast concrete block elements was determined before and after the pull-out test to see the effect of the pull-out process, since the frictional behavior is a function of surface roughness. For this purpose 3D scanning was performed on block surfaces and a special macro program was coded to get a surface reading for every 0.5 mm. Since the concrete blocks used in the experiments are produced using the dry-cast method, the surfaces are not smooth and many small sized aggregate particles stick out of the average surface. As a result these extrusions break during the pull-out test. Hence, in conclusion, the roughness values have always increased after pull-out tests for both geotextile and geogrid reinforcement.

Sticking of Fine Particles in High-velocity Impact: Application to Size Distribution of Dust Grains in a Debris Disk

Impact experiments were conducted at a velocity of ∼0.2–1.0 km s−1 using fine particles with several microns or submicrons in size. For metal (Cu) plate targets, as observed in previous impact experiments using projectiles with sizes larger than tens of micron, our experiments with the fine particles also show that projectile materials can remain in the crater. For brittle (SiO2 glass) plate targets, though previous impact experiments using projectiles with sizes larger than tens of microns have shown the spallation and ejection of projectile materials, our experiments with the fine particles show that irreversible inelastic deformation of targets occurred and that projectile materials can remain in the crater. This is explained by the absorption of impact energy determined via the competition between deformation and crack propagation. The deformation thus contributes to the energy absorption even for brittle materials at small sizes. Compiling our results and previous data, we found that sticking can occur in collisions with particles up to at least 1 cm for ductile (metal) targets and 10 μm for brittle targets at several hundred meters per second. As an application, we evaluated the size distribution of dust grains in a debris disk where the sticking of fine particles is assumed to occur. We demonstrated that the collisional sticking modified the size distribution, resulting in the decrease of spectral energy distribution at millimeter wavelengths, consistent with the photometry data of this debris disk. This suggests that the sticking of fine particles occurs in this debris disk.

Fe3O4–graphene/polyethylene glycol–SiO2 as a phase change material for thermal energy storage

Renewable energy efficiency can be increased using phase change materials (PCMs). This study has successfully developed PCMs with supporting materials, such as SiO2, Fe3O4, and graphene. Briefly, the synthesis of Fe3O4–Graphene/polyethylene glycol (PEG)–SiO2 begins with the synthesis of Fe3O4–Graphene using the coprecipitation method. Next, Fe3O4–Graphene/PEG–SiO2 nanocomposites are prepared with Fe3O4–Graphene mass varied in a range of 5%–8%. Based on the results, the Eg value of the Fe3O4–Graphene is 1.73 eV. The morphology of Fe3O4–Graphene/PEG–SiO2 shows that Fe3O4 particles stick to the surface of the graphene sheet. The addition of Fe3O4–Graphene mass affects the saturation magnetization value, which increases with an increase in Fe3O4–Graphene within the range of 1.05–2.55 emu/g. In addition, the latent calorific value obtained by differential scanning calorimetry shows that all the samples have a phase transition range within a temperature range of 59.4°C-60.5 °C and a latent calorific value of >100 J/g. Owing to its high latent calorific value, Fe3O4–Graphene/PEG–SiO2 can be applied as a heat-storage material.

Dynamical charging of interstellar dust particles in the heliosphere

Interstellar dust (ISD) particles penetrate the solar system due to the relative motion of the Sun and the local interstellar cloud. Before entering the heliosphere, they pass through the heliospheric interface – the region of the solar wind interaction with the interstellar plasma. The size distribution and number density of dust grains are modified in the interface essentially. The modification depends on the charging of the dust particles along their trajectories. In this paper, we present modeling results of the charging of ISD particles passing through the heliospheric interface. The main physical processes responsible for the charging within the heliospheric conditions are the sticking of primary plasma particles, secondary electron emission, photoemission, and the effects of cosmic ray electrons. We consider two methods to calculate the electric charge of ISD particles based on (1) the classic steady-state assumption that the charge depends only on local plasma and radiation conditions and (2) the dynamical computation of charge along the particle trajectory. We demonstrate that the steady-state assumption is quite justified to model trajectories and number density distributions of relatively big ISD grains (radius of 100 nm and larger) penetrating the heliosphere. The estimates show that ISD grains of these sizes require less than 0.25 years (distance of ≈1 au) after transition from the LISM into the heliosphere to reach an equilibrium. For small particles ( radius of 10 nm), the dynamical computation of charge influences the trajectories and modifies the number density substantially. The dust density accumulations are distributed within a more elongated region along the heliopause in case of dynamically changed charge as compared with the use of a steady-state charge approximation. As a result, the magnitudes of number density at the points of density features differ several times between the results obtained by the two considered approaches.

Influence of the alloying elements on the tribological performance of DLC coatings in different sliding conditions

Reduction of friction and wear at the sliding surfaces are the main concern in several applications. From an extensive list of low friction hard coatings, DLC type is one of the most studied and develop for achieving low wear and friction. The addition of an alloying element is extensively used, since it can change significantly the coatings performance. Therefore, in this research the tribological behaviour of DLC coatings alloyed with different elements was evaluated, since no works comparing the tribological properties of DLC films with approximately the same alloying elements concentration are reported in the literature. The coatings were deposited by physical vapor deposition and alloyed with: tungsten (W), silver (Ag), silicon (Si), silicon and oxygen (SiO), with concentrations of metallic elements between 10 and 15 at. % and a pure DLC coating was also deposited for comparison purposes. The coatings hardness varied between 23 GPa for the pure DLC and 11 GPa for the alloyed with Si and O. The tribological behaviour of the coatings was evaluated by pin-on-disk against 10 mm 100Cr6 steel balls, at room temperature (RT) and 100 °C. The best wear resistance was achieved with the pure DLC and DLC-W for RT tests. At RT the lowest friction was obtained with the DLCSi and DLCSiO coatings. Despite of the low COF values, those coatings displayed the highest specific wear rate values among all the films. This is attributed to the presence of hard SiC particles stick at the ball counterpart which promotes severe abrasion of the coatings surface. The increase of the temperature to 100 °C increases significantly the friction coefficient for the DLC and DLC-W coatings, whilst, for DLC-Ag, DLC-Si and DLC-SiO coatings a slight decrease is noticed. At this temperature DLCAg coating is the more performing due to the formation of a tick tribolayer rich in Ag adhered at the counterpart surface. With this work it was concluded that friction and wear are not directly related, and the third bodies formed on the sliding surfaces have major influence on the tribological performance of the system.

Sticky issues in turbulent transport.

We investigate the role of partial stickiness among particles or with a surface for turbulent transport. For the former case, we re-derive known results for the case of the compressible Kraichnan model by using a method based on bi-orthogonality for the expansion of the propagator in terms of left and right eigenvectors. In particular, we show that enforcing the constraints of orthogonality and normalization yields results that were previously obtained by a rigorous, yet possibly less intuitive method. For the latter case, we introduce a general model of transport within the atmospheric boundary layer. As suggested by experimental observations on the transport of atmospheric tracers, both drift and diffusivity scale with the height to the ground. The strength of the drift is parameterized by a velocity V. We use the bi-orthogonality method to show that for V in the range -1 < V < 0 and 0 < V < 1 there is a one-parameter family of boundary conditions that are a priori admissible. Outside of that range, there is a single boundary condition that is admissible. In physical terms, the one-parameter family is parametrized by the degree to which particles stick to the ground.

Numerical Modeling of Particle Dynamics Inside a Dry Powder Inhaler

The development of novel dry powders for dry powder inhalers (DPIs) requires the in vitro assessment of DPI aerodynamic performance. As a potential complementary method, in silico numerical simulations can provide additional information about the mechanisms that guide the particles and their behavior inside DPIs. The aim of this study was to apply computational fluid dynamics (CFDs) coupled with a discrete phase model (DPM) to describe the forces and particle trajectories inside the RS01® as a model DPI device. The methodology included standard fluid flow equations but also additional equations for the particle sticking mechanism, as well as particle behavior after contacting the DPI wall surface, including the particle detachment process. The results show that the coefficient of restitution between the particle and the impact surface does not have a high impact on the results, meaning that all tested combinations gave similar output efficiencies and particle behaviors. No sliding or rolling mechanisms were observed for the particle detachment process, meaning that simple bouncing off or deposition particle behavior is present inside DPIs. The developed methodology can serve as a basis for the additional understanding of the particles' behavior inside DPIs, which is not possible using only in vitro experiments; this implies the possibility of increasing the efficiency of DPIs.

Fouling and Slagging Investigation on Ash Derived from Sasol Coal Using ICP and XRF Analytical Techniques

During coal combustion in boilers, light fly ash particles are carried away along with the hot flue gases and the heavier bottom ash particles fall to the bottom of the boiler. The fly ash particles stick on the convective heat transfer surfaces and the furnace wall, causing fouling and slagging deposition problems during the boiler operation. The fouling and slagging effect reduces the boiler’s operational efficiency. This study was motivated by the decline in the operational efficiency of the installed boilers at Sasol synfuel operations in Secunda, Mpumalanga province in the Republic of South Africa. It was assumed that the drop in the boiler efficiency was caused by the coal ash deposition during the boiler operations. The rate of ash deposition and accumulation in the convective heat transfer tubes and furnace water walls during the boiler operation depends on the chemical composition of the coal ash produced during combustion. Coal fly and bottom ash samples were collected from the operational site for laboratory analysis to determine their chemical composition using induced coupled plasma optical emission spectroscopy, induced coupled plasma mass spectroscopy (ICP-OES, ICP-MS) and X-ray fluorescence (XRF) analytical methods. The major, minor and trace elements by mass (%) in the ash samples were obtained from the ICP-OES and ICP-MS, whereas the elemental composition in an oxidised atmosphere was obtained from the XRF analysis. The amount of unburnt coal particles within the ash samples was determined from the loss on ignition (LOI) test. The fouling and slagging prediction during Sasol boiler operation was evaluated using previously developed fouling and slagging indices as a guide using the analysed ash chemical composition results obtained in this study. It was concluded from the analysed results using the guided evaluated indices from the analysed coal ash chemistry that during the operations of Sasol boiler(s) there is a low to medium fouling prediction occurrence on the convective heat transfer tubes and a low slagging in the boiler furnace walls.

A numerical simulation study of ash deposition in a circulating fluidized bed during Zhundong lignite combustion

In the present work, a modified critical viscosity model considering condensation, thermophoresis and inertia impaction has been established to simulate ash deposition on a probe perpendicularly placed in the flue path in a circulating fluidized bed (CFB) burning high-sodium (Na) Zhundong lignite (ZD). The key influencing factors including flue gas velocity (3 – 15 m/s) and temperature (1023 – 1123 K), probe surface temperature (773 – 873 K), particle temperature (1073 – 1173 K), particle size (5 – 127 µm), and particle chemistry were systematically simulated and also experimental observed. The simulation results show that the thickness of the deposit on the windward side reached 3.4 mm over 6 h, which agreed well with the experimental observation. The deposit incurred an increase in the surface temperature to 1000 K, reducing the heat flux by 62.5 %. The mean size of the deposited ash at the stagnant point was found to be 25 – 30 µm, signifying its role in the deposition initiation. This is attributed to the synergistic effect of particle impaction and particle sticking, since particles with a higher Stokes number (0 – 8) would have a higher impaction probability (0 – 0.3) but a lower sticking probability once their kinetic energy exceeds 11.4 × 10-9 J. Moreover, ash deposition is also found to be affected by flue gas temperature, followed by particle temperature and probe temperature to a less degree. In addition, particles with smaller sizes rich in Na tended to deposit on the probe than those particles with larger sizes and abundant in Si and Al, highlighting the role of Na in initiating ash deposition during ZD CFB combustion.

Improving the quality of palm oil liquid waste using nanocomposite TiO2/EPB activated carbon through adsorption-photodegradation

Abstract. Research has been carried out on the use of nanocomposite of TiO2/activated carbon in reducing the quality parameters of palm oil liquid waste through the adsorption-photodegradation mechanism with DO (dissolved oxygen) parameters. Characterization of samples catalyst nanocomposite of TiO2 /activated carbon was used using Scanning Electron Microscopy (SEM-EDX) and DO parameters with variations in the mass percentage ratio of TiO2/activated carbon are namely (0.4:0.3), (0.6:0.4), (0.5:0.5), (0.4:0.6), and (0.7:0.3). SEM-EDX shows that TiO2 particles stick and spread unevenly on the surface of the activated carbon, and the ratio of the atomic mass of titanium to sample abundance is 0.25. Based on the analysis of DO of palm oil liquid waste using catalyst nanocomposite of TiO2 /activated carbon, it is known that the DO value of palm oil liquid waste increases with the increase in contact time of the TiO2/activated carbon sample with sunlight. This indicates that TiO2/activated carbon can degrade the presence of hazardous chemicals in palm oil liquid waste through the adsorption-photodegradation mechanism.

Detailed evaluation of drug powder deposition in swirl-type dry powder inhalers

Based on numerical simulations by the Euler/Lagrange approach in combination with the RNG-k-ε turbulence model flow field and particle transport through inhaler devices are studied. Since one major problem in inhaler performance and drug powder release is their deposition on the inhaler walls this issue is analysed in more detail. For computing fine particle motion through the stationary flow field all relevant particle forces and turbulent dispersion are considered. A potential deposition of fine particles is governed by two elementary processes, namely the transport of the fine drug particles towards the walls and their possible wall adhesion. Wall impingement of particles is induced by fluid transport and particle inertia as well as turbulence and for very fine particles also Brownian random motion. The possibility of particle sticking on the inhaler walls is modelled by considering the van der Waals adhesion force. Based on an energy balance for an oblique elastic-plastic wall impingement, a critical impact velocity is derived below which the particles are depositing. This approach accounts for the mechanical properties of wall and particle materials. First, the performance of different deposition models was analysed and the results were compared with literature experiments. The local and global deposition of particles in the considered swirl-type inhalers is determined in dependence of particle size, stationary flow rates (between15 l/min and 90 l/min) and particle release location. The range of particle sizes considered is between 0.05 μm and 10 μm, representing a typical spectrum for fine drug powders in use. Additionally, the spatial distribution of the deposits within the two inhaler types is evaluated for allowing inhaler optimisation and the predicted emitted fraction of fine particles is compared with experimental observations.

Анализ сопряженного тепломассопереноса при аэрозольной флотации золота из россыпей

Introduction. The probability of replenishing the SME of placer gold by registering the reserves of new deposits is low, and the involvement of man-made waste in the economic circulation will allow maintaining the achieved level of gold production from placers for 10-15 years. Purpose of research. The aim of the study is to develop a technology for extracting gold from old wastes of alluvial mining based on the identified patterns of conjugate heat and mass transfer during aerosol flotation of metallic gold. Methodology. For the development of technogenic wastes of alluvial gold mining, an enrichment module based on gravity and flotation methods has been developed. The module equipment has passed research tests in industrial conditions. During flotation, the increase in the gold content in the operation of the main flotation is carried out by mixing the crude concentrate isolated from ½ of the original feed with the other ½ of it. A mixture of air and hot steam was used as the gas phase during flotation. Research results and discussion. The temperature difference at the gas-liquid interface is the driving force of the vapor-liquid phase transition with the release of significant condensation heat. The time of particle sticking to the bubble is commensurate with the time of heating the interfacial surface due to the heat of vapor condensation. This allows us to consider temperature as one of the reasons for changing the result of flotation by a mixture of air and water vapor. Due to vapor condensation, the bubble size and the intensity of interfacial heat transfer decrease. When the minimum size is reached, overheating of the vapor in the bubble leads to an increase in the evaporation of the solvent and pressure in the gas phase: the heat transfer between the phases and the size of the bubble begin to increase. Transient processes in steam are non-polytropic and the limiting bubble sizes decrease with time: at the minimum size and maximum temperature, the heat transfer of steam is higher than the heat transfer of water with an increase in the size of the bubble and a drop in temperature in it. The limiting transitions of the bubble size are the cause of high-speed oscillations of the bubble walls, which decay with time. When the bubble surface is stretched in the three-phase contact zone, the gas-liquid surface tension increases due to a decrease in the density of the adsorption layer of surfactant molecules, which causes an increase in the force holding the hydrophobic extractable particle on the bubble surface. Radial tensile-compression deformations lead to shedding from the bubble surface of hydrophilic gangue minerals randomly retained by the bubble surface (for example, in the case of high occupation of the bubble surface by extracted particles). Conclusion. It is substantiated that the combined gravity-flotation technology is economically justified: the added value of marketable products provides an increase in the value of the net present value and the return on investment index, and a reduction in their payback period. It has been proven that the addition of gravity technology with flotation methods for extracting gold provides an increase in annual metal production by ~27% rel. due to the additional extraction of forms of gold that are “resistant” to gravitational methods.

Relationship of particle size, reaction and sticking behavior of iron ore fines toward efficient fluidized bed reduction

The relationship of particle size, reaction and sticking behavior of iron ore fines toward efficient fluidized bed hydrogen reduction were systematically investigated at 600–800 °C in a laboratory fluidized bed. First, the reduction kinetics were studied, and the results showed that hydrogen reduction of granulated iron ore was controlled by reduction reaction, and the activation energy was approximately 88.4 kJ/mol. The reduction rate of granulated iron ore with a diameter of 200 μm could be increased by 10 times as the reduction temperature rose from 600 to 800 °C. Then, a modified force balance model was established to distinguish the critical sticking point of granulated iron ore during high temperature fluidized bed hydrogen reduction, and it indicated that the defluidization temperature could be raised from 630 to 790 °C as the particle size was enlarged from 100 to 200 μm with a fluidization number of 10. Eventually, coupling the kinetic model and modified force balance model, the maximum gas utilization rate of fluidized bed hydrogen reduction was estimated, and it indicated that at reduction temperatures of 650–750 °C with particle sizes of 200–300 μm, the optimal gas utilization rate could be achieved, which was consistent with the experimental results. Contradictory to traditional understandings of chemical reaction engineering, due to the interaction of reduction performance and sticking behavior, too high of a reduction temperature or too small of a particle size might not be preferable for fluidized bed hydrogen reduction, and this study provided valuable references for industrial operation.

Development and optimization of the novel scale-up fabrication method of polyvinylpyrrolidone (PVP) microparticles

This research proposed a new method for making polymer microparticles. Polyvinylpyrrolidone was used in concentrations of 1–5%. First, the critical conditions of microparticles were evaluated through the electrocentrifuge spinning system. The critical voltage, rotating speed, and solution concentration were obtained. The results showed that the number of particles increased in each solution concentration and the particle size decreased with increasing the voltage. Also, as the rotating speed increases, the particles reach the bed before drying, thus sticking to each other and creating a smooth surface. However, at high voltages, the particles stick less to each other.

Deformation and film formation mechanisms during high velocity impact of silicon carbide nanoparticles

Molecular dynamics simulations were conducted to study the factors that affect deformation behavior that occurs during high-speed impact of SiC nanoparticles onto flat substrates. For these simulations, a 6 nm particle was impacted onto a (110)-oriented SiC substrate and the particle impact velocity (3000–4000 m/s), particle orientation, and impact angle (0°–75°) were systematically varied. A broad range of impact behaviors were observed and categorized from elastic with no particle sticking to plastic with significant particle deformation and sticking. High impact velocities and near normal impact angles were found to enhance particle sticking. Particle orientation also had an effect. For some impact conditions, disordering of the lattice within the particle was observed and quantified. Particle impacts that resulted in the greatest degree of amorphization also exhibited significant deformation. This suggests that amorphization followed by viscous flow in the disordered region of the particle is the primary deformation mechanism responsible for particle sticking.

Energy dissipation in horizontally driven particle dampers of low acceleration intensities

The energy dissipation in sinusoidally driven particle dampers is highly dependent on the motion mode of the particle bed. Especially, for applications of low acceleration intensity, i.e., acceleration amplitude below gravitational acceleration, only small energy dissipation rates are obtained so far, due to sticking of particles. Here, a new and more efficient design of particle dampers is introduced for such applications, whereby the focus is on horizontal vibrations. The proposed design makes use of the rolling property of spheres inside particle containers with flat bases. First, a cuboid container shape is studied. Two different motion modes are observed experimentally within this container shape. For low driving amplitudes, the particle bed is showing a scattered behavior resulting in a low damping efficiency. For high driving amplitudes instead, the rolling collect-and-collide state is observed resulting in much higher efficiency. Analytical descriptions for the energy dissipation are derived for both motion modes, being in good agreement with experimental measurements. It is obtained that the optimal working point of such dampers, i.e., the optimal stroke, is only depending on the filling ratio of the damper. Additionally, the optimal working point separates both motion modes. For lower strokes as the optimal one, the scattered state is observed, while for higher strokes the rolling collect-and-collide mode is seen. Sensitivity analyses are performed using the experimental setup and discrete element simulations. It is obtained that especially a low friction coefficient and a high particle radius are beneficial. On the other hand, a small tilt around the container’s longitudinal or pitch axis might significantly decrease the efficiency of the damper. Besides the cuboid container, the effect of a cylindrical container heading against gravity is analyzed. While the particle bed motion modes are only little influenced, the efficiency of the damper becomes independent of the excitation direction in the horizontal plane. Thus, such dampers could be applied to a large field of applications in mechanical and civil engineering.

Two-particle bound states at interfaces and corners

We study two interacting quantum particles forming a bound state in d-dimensional free space, and constrain the particles in k directions to (0,∞)k×Rd−k, with Neumann boundary conditions. First, we prove that the ground state energy strictly decreases upon going from k to k+1. This shows that the particles stick to the corner where all boundary planes intersect. Second, we show that for all k the resulting Hamiltonian, after removing the free part of the kinetic energy, has only finitely many eigenvalues below the essential spectrum. This paper generalizes the work of Egger, Kerner and Pankrashkin (2020) [6] to dimensions d>1.

CFD modelling of biomass ash deposition under multiple operation conditions using a 2D mass-conserving dynamic mesh approach

A dynamic CFD model with conjugate heat transfer that considers particle sticking and erosion is developed and used for predicting the effect of multiple operation conditions on ash deposition for a model biomass fly ash species (K2Si4O9) in a lab-scale entrained flow reactor. In order to achieve stable dynamic mesh morphing, a globally mass-conserving smooth method is proposed using a multiple-point weighted moving average algorithm and a growth scaling factor. A new method to estimate particle count for Lagrangian particle tracking is also proposed, which is based on particle impaction efficiency and face count of the mesh of deposition tube. Particle sticking is predicted based on the two-body collision method and particle erosion is evaluated using the empirical model that is dependent on temperature, particle diameter and velocity, and impaction angle. The proposed smoothing method incorporated with the particle count estimated can accomplish stable dynamic mesh morphing for all the 37 deposition cases without the need to loop the smoothing process and sub-group/averaging the growth rate. The prediction results using the proposed ash deposition model agree reasonably with the experimental observation of the effects of flue gas temperature, tube surface temperature, flue gas velocity, fly ash flux and deposition time on deposit formation rate. R2 of the predicted and measured deposit formation rates is approximately 0.68. The results also show that the predicted erosion rate essentially correlates negatively with the experimental deposit formation rate. Interestingly, coarse particles are numerically seen to reduce the deposition rate caused by smaller particles via erosion.

Models of technogenic pollution by dust and gas components at protection facilities

The negative impact of the open method development of mining and processing enterprises of the Kursk magnetic anomaly on the environment is considered. The volume of unorganized emissions of dust and harmful gases into the atmosphere during blasting operations at the Lebedinsky GOK quarry is calculated. When processing the results of the experiment, the article used the “STATISTIKA” software package. Calculations of concentrations of harmful substances at the time of blasting showed that the concentration of carbon monoxide, nitrogen oxides and dust in the atmosphere of the quarry exceed the maximum permissible concentrations. Industrial general technical preventive measures aimed at reducing the emission of dust particles during serial explosions of iron-containing rocks at the facility are recommended. An engineering and technical solution has been developed to reduce dust and gas emissions during mass explosions at the quarry of a mining and processing plant. The method of controlling the wetting and sticking of dust particles is applied. Aqueous solutions with an anion active substance based on triethanolamine salts are recommended. The concentration of the surfactant is selected according to the value of the surface tension of the solution.