Moisturizing dust suppressant and use method thereof

Abstract

The invention provides a moisturizing dust suppressant and a use method thereof, and relates to the technical field of dust suppression. The moisturizing dust suppressant is prepared from the following raw materials in percentage by mass: 18 to 43 percent of glycerol, 0.1 to 0.6 percent of guar gum, 3 to 8 percent of magnesium sulfate, 0.1 to 0.3 percent of sodium dodecyl benzene sulfonate, 1 to 3 percent of sodium benzoate and the balance of water, wherein the mass of the raw materials is 100 percent. The use method comprises the following steps: selecting the spraying concentration of the moisturizing and dust suppressing agent according to the road condition of a target road, and selecting the nozzle type of the spraying facility for spraying according to the spraying requirement; the road conditions comprise municipal roads and slag roads; the spraying requirement comprises the spraying area or the spraying uniformity of the spraying operation. According to the moisture-preserving dust suppressant, the dust concentration is remarkably reduced, the safety of an operation environment is improved, and the loss of coal resources is reduced. In addition, by means of the spraying method, the use efficiency and economic benefits of the dust suppressant are remarkably improved, and the problem that a traditional spraying mode is poor in effect in a complex application scene is effectively solved.

Description

Technical Field

[0001] This application relates to the field of dust suppression technology, and in particular to a moisturizing dust suppressant and its application method. Background Technology

[0002] In open-pit coal mining operations, the frequent passage of heavy vehicles and the loading, unloading, and transfer of materials on mine roads and tunnels generate large amounts of high-concentration dust. This dust is mainly composed of coarse particles, generally with a large particle size, and exhibits significant dust generation intensity. Monitoring shows that without effective dust suppression measures, the dust concentration in the work area can far exceed health and safety limits, posing a serious threat to the health of workers and easily leading to respiratory diseases and pneumoconiosis.

[0003] Meanwhile, dust pollution leads to a sharp decrease in visibility, increasing the probability of safety accidents such as vehicle collisions and causing coal resources to be lost by the wind, affecting the production efficiency of the mining area. Dust suppressant spraying technology, due to its cost-effectiveness and dust suppression effect compared to traditional water spraying, has become the main means of dust control in open-pit coal mines. However, existing dust suppressant products have significant shortcomings in their compatibility with the special working conditions of open-pit coal mines. Specifically, open-pit coal mine roads are mostly soil or gravel surfaces with rough and uneven surfaces, and existing dust suppressant formulations do not fully consider the characteristics of such road surfaces. When the concentration of the dust suppressant is too low, its moisturizing performance and wind erosion resistance are significantly insufficient, resulting in a short-lived dust suppression effect; when the concentration is too high, the solution's permeability deteriorates, easily forming a brittle solidified layer on the road surface. This layer is prone to warping and cracking under vehicle pressure, not only wasting agent resources but also potentially increasing road surface adhesion resistance. Furthermore, existing dust suppressants often use single chemical components, such as only containing hygroscopic salts or high molecular polymers, making it difficult to simultaneously achieve the synergistic effects of rapid dust wetting, effective particle adhesion, and long-term moisture retention. While hygroscopic salts possess some moisture-retaining properties, they are prone to deliquescence and loss in open mining environments, resulting in short-lived effectiveness. Although polymers can form adhesive films, their adhesion to coarse-grained dust particles is insufficient, and they are prone to cracking and failure on bumpy roads. These problems lead to unstable dust suppression effects, failing to meet the long-term dust suppression requirements of all roads in open-pit coal mines, including mine tunnels and transfer ramps, in areas with high dust levels. Therefore, there is an urgent need to develop a novel dust suppressant with optimized composition and synergistic functions.

[0004] To address the aforementioned issues, existing technologies urgently need improvement. Summary of the Invention

[0005] The purpose of this application is to provide a moisturizing and dust-suppressing agent and its method of use to solve the above-mentioned problems.

[0006] To achieve the above objectives, this application adopts the following technical solution: A moisturizing and dust-suppressing agent, calculated based on 100% of the raw materials for moisturizing and dust suppression, comprises: 18-43% glycerin, 0.1-0.3% guar gum, 3-8% magnesium sulfate, 0.1-0.3% sodium dodecylbenzenesulfonate, 1-3% sodium benzoate, and the balance being water.

[0007] Preferably, the raw material mass of the moisturizing and dust-suppressing agent is calculated as 100, including 35% glycerin, 0.1% guar gum, 8% magnesium sulfate, 0.1% sodium dodecylbenzenesulfonate, 1% sodium benzoate, and the balance being water.

[0008] This application also provides a method for using a moisturizing and dust-suppressing agent, including: Select the appropriate spraying concentration and spraying requirements for the moisturizing and dust-suppressing agent based on the road conditions of the target road, and then select the nozzle type of the spraying equipment for spraying. The road conditions mentioned include municipal roads and slag roads; The spraying requirements include the spraying area or the uniformity of the spraying operation.

[0009] Optionally, for the municipal roads, the undiluted moisturizing and dust-suppressing agent is diluted 15-40 times; For the slag road, the stock solution of the moisturizing and dust-suppressing agent is diluted 15-40 times.

[0010] Optionally, when spraying according to the spraying area, the nozzle type includes PY-30 type nozzles and / or PY-40 type nozzles.

[0011] Optionally, when spraying according to the spray uniformity, the nozzle type includes the PY-50 type nozzle.

[0012] Optionally, for the municipal roads, the dosage of the moisture-retaining and dust-suppressing agent is 0.4-1 kg / m². 2 .

[0013] Optionally, the slag road includes a compacted dirt road in an open-pit coal mine, and the compacted dirt road includes at least one of the following: main road, mine road, transfer ramp, and loading area.

[0014] Optionally, in the compacted earth road, the spraying dosage of the moisture-retaining and dust-suppressing agent is 1.25-2 kg / m². 2 The spray adhesion rate should be no less than 90%.

[0015] Preferably, the dilution ratio is 30 times for the municipal road and 30 times for the slag road.

[0016] Compared with the prior art, the beneficial effects of this application include: This application proposes a moisturizing dust suppressant that achieves multiple synergistic effects through a specific combination and ratio of glycerin, guar gum, magnesium sulfate, sodium dodecylbenzenesulfonate, and sodium benzoate. This dust suppressant effectively addresses the problems of high dust levels, complex road conditions, and rapid moisture evaporation in open-pit coal mines. Specifically, it enhances the moisture retention of the dust suppressant, improves its wetting and binding ability for coarse-particle dust, thereby forming a uniform and durable dust-proof solidification layer on uneven mine roads, significantly reducing dust concentration, improving working environment safety, and minimizing coal resource loss.

[0017] In the application of the moisturizing dust suppressant, the spraying concentration is selected based on the road conditions of the target road, and the nozzle type of the spraying facility is chosen according to the spraying requirements. This application enables precise and efficient application of the moisturizing dust suppressant. Specifically, for different road conditions such as municipal roads and slag roads, the dilution ratio of the dust suppressant can be adjusted to ensure optimal dust suppression effects in different dust environments, avoiding waste or insufficient effectiveness caused by a single concentration. Simultaneously, selecting the appropriate nozzle type based on different operational requirements such as spraying area or spray uniformity optimizes the distribution and coverage pattern of spray droplets, thereby improving the adhesion rate and efficiency of the dust suppressant and ensuring the durability and stability of the dust suppression effect. This customized spraying method significantly improves the efficiency and economic benefits of dust suppressant use, effectively solving the problem of poor performance of traditional spraying methods in complex application scenarios. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation on the scope of this application.

[0019] Figure 1 The following is a physical image of your moisturizing dust suppressant as an example. Detailed Implementation

[0020] As used in this article: "Prepared from" is synonymous with "comprising". The terms "comprising", "including", "having", "containing", or any other variations thereof as used herein are intended to cover non-exclusive inclusion. For example, a composition, step, method, article, or apparatus that includes the listed elements is not necessarily limited to those elements, but may include other elements not expressly listed or elements inherent to such composition, step, method, article, or apparatus.

[0021] The conjunction "composed of..." excludes any unspecified elements, steps, or components. If used in a claim, this phrase makes the claim closed, excluding materials other than those described, except for associated conventional impurities. When the phrase "composed of..." appears in a clause of the body of a claim rather than immediately following it, it limits only the elements described in that clause; other elements are not excluded from the claim as a whole.

[0022] When a quantity, concentration, or other value or parameter is expressed as a range, a preferred range, or a range defined by a series of upper and lower preferred values, this should be understood as specifically disclosing all ranges formed by any pair of any upper or preferred value with any lower or preferred value, regardless of whether the range is disclosed individually. For example, when the range “1–5” is disclosed, the described range should be interpreted as including ranges “1–4”, “1–3”, “1–2”, “1–2 and 4–5”, “1–3 and 5”, etc. When numerical ranges are described herein, unless otherwise stated, the range is intended to include its endpoints and all integers and fractions within that range.

[0023] In these embodiments, unless otherwise specified, the portions and percentages are all by weight.

[0024] "Parts by mass" refers to the basic unit of measurement that expresses the mass ratio of multiple components. One part can represent any unit mass, such as 1g or 2.689g. If we say that component A has "a" parts by mass and component B has "b" parts by mass, it means the ratio of the mass of component A to the mass of component B is a:b. Alternatively, it can mean that the mass of component A is aK and the mass of component B is bK (where K is any number representing a multiplier). It is important to understand that, unlike parts by mass, the sum of the mass parts of all components is not limited to 100 parts.

[0025] "And / or" is used to indicate that one or both of the described situations may occur, for example, A and / or B includes (A and B) and (A or B).

[0026] To better illustrate the technical solution provided in this application, a general description of the technical solution provided in this application will be given before proceeding with specific implementation methods.

[0027] Traditional dust suppressants and their spraying technologies have problems such as insufficient adaptability of dust suppressant concentration, poor spray uniformity, and poor long-term moisturizing effect when facing special working conditions such as large amount of dust on mining roads, complex road conditions, and rapid moisture evaporation in open-pit coal mining operations. They are difficult to meet the actual needs of long-term dust suppression throughout the mining area.

[0028] In response, this application proposes a moisturizing and dust-suppressing agent, which, based on the mass of the raw materials for moisturizing and dust suppression as 100%, comprises: 18-43% glycerin, 0.1-0.3% guar gum, 3-8% magnesium sulfate, 0.1-0.3% sodium dodecylbenzenesulfonate, 1-3% sodium benzoate, and the balance being water.

[0029] This application achieves multiple synergistic effects through a specific combination and ratio of glycerin, guar gum, magnesium sulfate, sodium dodecylbenzenesulfonate, and sodium benzoate. This dust suppressant effectively solves problems such as high dust levels, complex road conditions, and rapid moisture evaporation in open-pit coal mines. Specifically, it enhances the moisture retention and durability of the dust suppressant, improves its wetting and binding ability for coarse-particle dust, thereby forming a uniform and durable dust-proof solidification layer on uneven mine roads, significantly reducing dust concentration, improving working environment safety, and reducing coal resource loss.

[0030] In a preferred embodiment, the raw material mass of the moisturizing and dust-suppressing agent is calculated as 100, comprising 35% glycerin, 0.1% guar gum, 8% magnesium sulfate, 0.1% sodium dodecylbenzenesulfonate, 1% sodium benzoate, and the balance being water.

[0031] This application proposes a moisturizing dust suppressant that can effectively suppress dust. However, in practical applications, road conditions vary greatly across different roads, and the requirements for spraying effects also differ. Using a single spraying method may lead to waste of the dust suppressant or failure to achieve the desired dust suppression effect, thus affecting its application efficiency and economy.

[0032] In this regard, this application also provides a method for using a moisturizing and dust-suppressing agent, including: Select the appropriate spraying concentration and spraying requirements for the moisturizing and dust-suppressing agent based on the road conditions of the target road, and then select the nozzle type of the spraying equipment for spraying. The road conditions mentioned include municipal roads and slag roads; The spraying requirements include the spraying area or the uniformity of the spraying operation.

[0033] In an optional implementation, for the municipal roads, the stock solution of the moisturizing and dust-suppressing agent is diluted 15-40 times; For the slag road, the stock solution of the moisturizing and dust-suppressing agent is diluted 15-40 times.

[0034] Optionally, for municipal roads, the concentration of the undiluted moisturizing dust suppressant can be 15, 20, 25, 30, 35, or 40 times, or any value between 15 and 40 times; for slag roads, the concentration of the undiluted moisturizing dust suppressant can be 15, 20, 25, 30, 35, or 40 times, or any value between 15 and 40 times.

[0035] In one optional implementation, when spraying according to the spraying area, the nozzle type includes PY-30 nozzles and / or PY-40 nozzles.

[0036] In one alternative implementation, when spraying according to the spray uniformity, the nozzle type includes a PY-50 nozzle.

[0037] Specifically, based on the different sizes of the mine tunnel area and the degree of bumpiness of the spraying vehicle, PY-40 (15mm diameter) performs best in terms of spray uniformity. If small-area precise irrigation is required, PY-30 can be selected (attention should be paid to the impact of wind). If ultra-large-area coverage is required, PY-50 can be used as a supplement (uniformity can be improved by combining multiple guns or fine-tuning the pressure).

[0038] In one optional implementation, for the municipal roads, the dosage of the moisture-retaining and dust-suppressing agent is 0.4-1 kg / m². 2 .

[0039] Optionally, for the aforementioned municipal roads, the application rate of the moisturizing dust suppressant can be 0.4 kg / m². 2 0.5 kg / m 2 0.6 kg / m 2 0.7 kg / m 2 0.8 kg / m 2 0.9 kg / m 2 1 kg / m 2 Or 0.4-1 kg / m 2 Any value between.

[0040] In one optional embodiment, the slag road includes a compacted dirt road in an open-pit coal mine, which includes at least one of a main road, a mine road, a transfer ramp, and a loading area.

[0041] In one optional embodiment, the dosage of the moisture-retaining and dust-suppressing agent sprayed in the compacted earth road is 1.25-2 kg / m². 2 The spray adhesion rate should be no less than 90%.

[0042] Optionally, in compacted soil roads, the application rate of the moisture-retaining and dust-suppressing agent can be 1.25 kg / m². 2 1.3 kg / m 2 1.35 kg / m 2 1.4 kg / m 2 1.45 kg / m 2 1.5 kg / m 2 1.55 kg / m 2 1.6 kg / m2 1.65 kg / m 2 1.7kg / m 2 1.75 kg / m 2 1.8 kg / m 2 1.85 kg / m 2 1.9 kg / m 2 Or 1.25-2 kg / m 2 Any value between.

[0043] In a preferred embodiment, the dilution factor is 30 times for the municipal road and 30 times for the slag road.

[0044] The method for evaluating the application effect of the dust suppressant provided in this application includes: selecting multiple monitoring sites within the experimental area of ​​the target road; using a pump-type dust monitoring instrument to continuously measure parameters such as PM2.5, PM10, TSP, wind speed, temperature, atmospheric pressure, and air humidity multiple times at each site, and taking the average value; spraying the dust suppressant once a day for several consecutive days, and recording the monitoring data after each spraying, 3 hours after spraying, and 6 hours after spraying, respectively, to evaluate the dust suppression effect.

[0045] For municipal roads, the water absorption per unit area is used to evaluate the moisture retention rate; for slag roads, the surface slag moisture content is used to evaluate the moisture retention rate.

[0046] Furthermore, addressing the core dust pollution concerns in different application scenarios, and without altering the core components of the moisturizing dust suppressant in this application, the concentration is precisely matched within a 15-40 times dilution range, and the spraying process is optimized: For main roads with high compaction in open-pit coal mines, a 20-25 times dilution concentration is suitable, employing a layered spraying process with two applications spaced 2 hours apart to prevent the solidified layer from cracking; for mine roads with high evaporation, a 15-25 times dilution concentration is suitable to enhance the moisturizing and dust suppression effect; for main roads with high traffic volume in municipal areas, a 30-35 times dilution concentration is suitable, employing a low-pressure spraying process of 0.2-0.3 MPa during off-peak hours to prevent the road surface from sticking to feet and to avoid affecting traffic; for municipal secondary roads with low dust, a 35-40 times dilution concentration is suitable to further control usage costs. This precise matching of concentration and process overcomes the limitations of traditional general matching, further improving adaptability and cost-effectiveness in different scenarios while ensuring the original dust suppression effect.

[0047] The implementation schemes of this application will be described in detail below with reference to specific embodiments. However, those skilled in the art will understand that the following embodiments are only for illustrating this application and should not be regarded as limiting the scope of this application. Unless otherwise specified in the embodiments, conventional conditions or conditions recommended by the manufacturer shall apply. Reagents or instruments used without specified manufacturers are all conventional products that can be purchased commercially.

[0048] Example The formulation, spraying plan, and on-site application of the moisturizing dust suppressant in open-pit mines shall be implemented according to the following plan: The moisturizing and dust-suppressing agent was used in all the embodiments, such as Figure 1 As shown, the mass fractions of its components are as follows: glycerol 35%, guar gum 0.1%, magnesium sulfate 8%, sodium dodecylbenzenesulfonate 0.1%, and sodium benzoate 1%, with the remainder being water.

[0049] Spraying concentrations were applied separately for municipal roads and slag roads, using gradient dilution ratios of 40, 35, 30, 25, 20, and 15 to create different concentration gradients. The spraying rate for municipal roads was 0.4 kg / m³. 2 The spraying rate for slag-dammed roads is 1.25 kg / m. 2 The moisturizing rate was evaluated at 3 hours, 6 hours, and 9 hours after spraying.

[0050] When applying a moisturizing and dust-suppressing agent to municipal roads, the surface water film weight method was used to assess the change in surface moisture. A 10cm×10cm super absorbent filter paper was covered on the road surface, pressed, and weighed. The moisture content per unit area of ​​the surface was calculated by converting the water absorption of the filter paper and the coverage area, and the evaporation rate of the moisture was assessed. The results are shown in Table 1.

[0051] Table 1 Water absorption per unit area of ​​municipal roads

[0052] It can be seen that after 3, 6, and 9 hours, the water absorption of all concentrations showed a decreasing trend, but the rate of decay was slower in the high-concentration group (e.g., 15 times), and it still remained at 271.3 g / m³ after 9 hours. 2 The low concentration group (e.g., 40 times) decreased to 127.6 g / m³. 2 When the dilution ratio is between 25 and 30 times, the data changes relatively smoothly. This concentration range is suitable for practical applications. At a 30-fold dilution, a 77% moisture retention rate can be achieved after 3 hours of spraying, and nearly 61% moisture retention rate can still be achieved after 9 hours of spraying. This achieves a balance between high initial water absorption and durability. The overall trend indicates that concentration and time are key factors affecting water absorption efficiency and need to be optimized in engineering design to improve the performance of road materials.

[0053] To implement the moisture-retaining and dust-suppressing agent on the slag road, the surface slag was directly sampled and the moisture content was measured using a rapid moisture meter. Data was monitored at regular intervals, and the results are shown in Table 2.

[0054] Table 2 Moisture content of slag road at different times

[0055] It is evident that as the concentration decreases, the rate of moisture content reduction accelerates significantly after spraying and at subsequent time points. For example, under a 40-fold dilution, the moisture content decreased to 4.0% after 18 hours, while under a 15-fold dilution, it only decreased to 11.2%. The initial moisture content of all experimental groups was 2.1%, ensuring the comparability of initial conditions. At a 30-fold dilution, the moisture retention rate reached 72% after 6 hours of spraying and remained above 60% after 18 hours. Overall, the data validates the importance of concentration optimization in mining area environmental remediation.

[0056] The nozzle parameters of the spraying equipment were evaluated using the water collection tank method, spraying a 30-fold diluted solution, and the uniformity coefficient was assessed. The parameters of different nozzles are shown in Table 3.

[0057] Table 3. Spray gun and nozzle parameters

[0058] 2.5 kg of spray liquid is sprayed per square meter. The water collection tank method is used, and water collection cups with a diameter of 10 cm are selected and tightly surrounded around the circumference. The liquid is collected by evenly arranging the water collection tanks in the spraying area. The uniformity of spraying (uniformity coefficient, CU) is evaluated based on the minimum water collection volume in a single cup and the average water collection volume per cup, combined with the coverage area of ​​the water collection tanks.

[0059] Table 4. Uniformity Coefficient of Nozzles

[0060] The uniformity of spraying is related to the nozzle size. Among the three spray guns, the PY-40 (15mm diameter) performs best in terms of spray uniformity. If you need precise irrigation in a small area, you can choose the PY-30 (you need to pay attention to the influence of wind). If you need ultra-large coverage, the PY-50 can be used as a supplement (you need to improve uniformity by combining multiple guns or fine-tuning the pressure).

[0061] In the application of moisturizing dust suppressants in open-pit coal mines, the dosage of the dust suppressant is 1.25 kg / m³. 2 A pump-type dust monitoring instrument was used to measure parameters such as PM2.5, PM10, TSP, wind speed, temperature, atmospheric pressure, and air humidity. Three locations were selected in the compacted soil road test area, and measurements were taken three times consecutively at each location, with the average value recorded. Dust suppressant was sprayed continuously for five days, once a day, and monitoring data were recorded after spraying, 3 hours after spraying, and 6 hours after spraying.

[0062] The weather during the experiment was mainly sunny and partly cloudy. At 9:00 AM, the temperature ranged from 22.50 to 24.71 ℃, the wind speed from 1.3 to 2.1 m / s, and the humidity from 40.4 to 42.2% RH. At 2:00 PM, the temperature ranged from 25.50 to 27.52 ℃, the wind speed from 0.8 to 2.1 m / s, and the humidity from 33.2 to 38.7% RH. The mornings were characterized by higher humidity and lower temperatures, while the afternoons were characterized by lower humidity and higher temperatures. The evaluation data for the open-pit coal mine tunnels are shown in Table 5.

[0063] Table 5 Evaluation data in open-pit coal mines

[0064] It is evident that, within 2 hours after spraying, the dust suppression efficiency was as follows: On the first day, 30 minutes after spraying, the PM2.5 suppression rate was 82.70%, the PM10 suppression rate was 79.10%, and the TSP suppression rate was 78.61%. With the increase in the number of spraying days, the PM2.5 suppression rate reached 90.2% immediately after spraying on the third day, and remained above 90% daily thereafter. The PM10 suppression rate reached 90.48% on the third day, and remained above 90% daily thereafter. The TSP suppression rate reached 90.04% on the third day, and remained above 90% daily thereafter.

[0065] Regarding dust suppression efficiency within 8 hours after spraying, on the first day, the PM2.5 suppression rate was 82.61%, the PM10 suppression rate was 80.00%, and the TSP suppression rate was 75.12%. As the number of spraying days increased, the PM2.5 suppression rate reached over 88% immediately after spraying on the third day, and remained above 88% every day thereafter; the PM10 suppression rate reached over 88% on the third day, and remained above 88% every day thereafter; the TSP suppression rate reached over 88% on the third day, and remained above 88% every day thereafter.

[0066] Taking PM2.5 as an example, the average value before spraying was 29.8 μg / m³. 3 Three hours after spraying, the concentration dropped to 10.2 μg / m³. 3 The decrease was approximately 65.8%; 6 hours after spraying, the concentration further stabilized at 11.6 μg / m³. 3 The changes in PM10 and TSP were similar, with average reductions of 67.5% and 76.9% respectively 3 hours after spraying. Furthermore, wind speed and temperature fluctuated slightly after spraying, but did not significantly affect concentration changes; atmospheric pressure and humidity changed little, and overall environmental conditions remained relatively stable. Although wind speed occasionally fluctuated after spraying, particulate matter concentrations did not rebound. Six hours after spraying, the PM2.5 value remained stable at 11.6 μg / m³. 3 The following are daily average limits far below the ambient air quality standards (75 μg / m³). 3 ).

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

[0068] Furthermore, those skilled in the art will understand that although some embodiments herein include certain features included in other embodiments but not others, combinations of features from different embodiments are intended to be within the scope of this application and form different embodiments. For example, in the foregoing claims, any of the claimed embodiments can be used in any combination. The information disclosed in this background section is intended only to enhance the understanding of the general background of this application and should not be construed as an admission or in any way implying that such information constitutes prior art known to those skilled in the art.

Claims

1. A moisturizing and dust-suppressing agent, characterized in that, The raw materials for moisturizing and dust suppression, calculated as 100% by weight, include: 18-43% glycerin, 0.1-0.3% guar gum, 3-8% magnesium sulfate, 0.1-0.3% sodium dodecylbenzenesulfonate, 1-3% sodium benzoate, and the remainder is water.

2. The moisturizing and dust-suppressing agent according to claim 1, characterized in that, Based on the raw material mass of the aforementioned moisturizing and dust-suppressing agent as 100, it includes 35% glycerin, 0.1% guar gum, 8% magnesium sulfate, 0.1% sodium dodecylbenzenesulfonate, 1% sodium benzoate, and the balance being water.

3. A method of using the moisturizing and dust-suppressing agent according to claim 1 or 2, characterized in that, include: Select the appropriate spraying concentration and spraying requirements for the moisturizing and dust-suppressing agent based on the road conditions of the target road, and then select the nozzle type of the spraying equipment for spraying. The road conditions mentioned include municipal roads and slag roads; The spraying requirements include the spraying area or the uniformity of the spraying operation.

4. The method of using the moisturizing and dust-suppressing agent according to claim 3, characterized in that, For the municipal roads, dilute the undiluted moisturizing and dust-suppressing agent 15-40 times; For the slag road, the stock solution of the moisturizing and dust-suppressing agent is diluted 15-40 times.

5. The method of using the moisturizing and dust-suppressing agent according to claim 3, characterized in that, When spraying according to the spraying area, the nozzle type includes PY-30 nozzle and / or PY-40 nozzle.

6. The method of using the moisturizing and dust-suppressing agent according to claim 3, characterized in that, When spraying according to the spray uniformity, the nozzle type includes the PY-50 type nozzle.

7. The method of using the moisturizing and dust-suppressing agent according to claim 4, characterized in that, For the aforementioned municipal roads, the dosage of the moisture-retaining and dust-suppressing agent is 0.4-1 kg / m². 2 .

8. The method of using the moisturizing and dust-suppressing agent according to claim 3, characterized in that, The slag road includes compacted dirt roads in open-pit coal mines, and the compacted dirt roads include at least one of the following: main roads in the mining area, mine tunnels, transfer ramps, and loading areas.

9. The method of using the moisturizing and dust-suppressing agent according to claim 8, characterized in that, In the compacted earth road, the spraying dosage of the moisture-retaining and dust-suppressing agent is 1.25-2 kg / m². 2 The spray adhesion rate should be no less than 90%.

10. The method of using the moisturizing and dust-suppressing agent according to any one of claims 2-9, characterized in that, For the municipal roads, the dilution factor is 30 times; for the slag roads, the dilution factor is 30 times.

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