Special dust suppressant for non-curing road rolled by mine heavy vehicle and preparation method of special dust suppressant

Abstract

The invention provides a dust suppressant special for a mine heavy vehicle rolling non-curing road and a preparation method thereof.The functional components of the dust suppressant comprise a water retention and moisture absorption agent, an adhesive and a surfactant, and the water retention and moisture absorption agent comprises inorganic salt, a polyhydroxy polymer and super absorbent resin; the adhesive comprises guar gum, sodium tripolyphosphate and a natural lignocellulose derivative, and the surfactant is alkyl glycoside. By preparing the composite dust suppressant, all the component raw materials play a synergistic role, the water retention, moisture absorption and evaporation resistance functions are mainly achieved, secondary dust raising prevention is assisted, the dust suppressant has certain abrasion resistance and rolling resistance, and the dust suppressant is high in dust suppression rate, long in duration time, high in environmental adaptability and suitable for rolling non-solidified roads of mine heavy cars and has the advantages of being environmentally friendly and free of pollution. The mine working environment can be improved, the occupational disease occurrence rate is reduced, the abrasion of dust to vehicles is reduced, the service life is prolonged, meanwhile, the pollution of raised dust to the surrounding environment is reduced, water is effectively saved, and the dust suppression cost is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of atmospheric environmental protection, and in particular to a special dust suppressant for non-solidified roads rolled by heavy vehicles in mines and a preparation method thereof. Background Art

[0002] Most mine roads are paved with mining waste rocks made from local materials. They are non-solidified roads, and they are repeatedly crushed by large-tonnage transport vehicles with hundreds of tons of tonnage, resulting in dust pollution. Sprinkling water to suppress dust is the most common method of road dust suppression. Although the effect is immediate, the road surface evaporates a lot after a single sprinkling of water, and the water evaporates very quickly. The moisturizing time after a single spray of water is short, and the dust suppression effect disappears quickly due to rapid drying. Especially in the north, it is dry, windy and rainy in spring, and there is a serious regional water shortage. When the road surface is not sprinkled with water in time or the amount of water is not sufficient, the dust problem is more prominent. In order to ensure the dust suppression effect, it is necessary to sprinkle water in large quantities by multiple vehicles every day. If water is sprinkled frequently under the condition of limited water resources, it will not only increase equipment consumption, but also increase water and labor costs, and cause a large waste of water resources.

[0003] At present, dust suppressants are an effective method for terminal control of road dust, and are mostly used in urban roads. For example, the invention patent (application number is CN 201710092303.4) discloses a road dust suppressant, the main components of which are dispersed latex, emulsion, hygroscopic moisturizer, adsorbent, antifreeze, wetting agent, filler, etc. The dissolution rate of this substance is slow, and the spraying of fillers such as calcium carbonate, calcium oxide, calcium hydroxide, and diatomaceous earth on the road will bring new dust pollution hazards after drying. The invention patent (application number is CN202010947521.3) discloses a moisturizing dust suppressant for road dust and its preparation method, which is prepared from the following raw materials in mass percentage: 3.6-8% of a mixture of acetylcitrate tributyl ester, aqueous stearic acid emulsion and soluble starch, 0.1-10% of a binder, 0.1-5% of a moisturizer, 0.1-1% of a surfactant, and the balance is water. The road suppressant is sprayed on the road to form a moisturizing soft film, which has the effect of dust suppression. However, the above two types of dust suppressants are suitable for urban roads. Mine transportation roads are mostly paved with mining waste rocks made from local materials. The dust layer is thick and the road conditions are poor. They are non-solidified roads. They are repeatedly crushed by hundreds of tons of large-tonnage transportation vehicles and cause serious dust pollution. The dust suppression conditions have high requirements on the water retention, compression resistance, and tolerance to temperature fluctuations of the dust suppressants. Most dust suppressant products have poor environmental adaptability and cannot be used for non-solidified roads crushed by heavy vehicles in mines.

[0004] In view of this, it is necessary to design an improved dust suppressant for non-solidified roads rolled by heavy vehicles in mines and a preparation method thereof to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide a special dust suppressant for non-solidified roads rolled by heavy vehicles in mines and a preparation method thereof. The functional components of the dust suppressant include a water-retaining and moisture-absorbing agent, a binder and a surfactant. By configuring a composite dust suppressant, the components can play a synergistic role to achieve water retention and moisture absorption as the main function and prevention of secondary dust as the auxiliary function, while also having certain wear resistance and anti-rolling performance. The dust suppressant has strong environmental adaptability and is suitable for non-solidified roads rolled by heavy vehicles in mines.

[0006] To achieve the above-mentioned purpose of the invention, the present invention provides a special dust suppressant for non-solidified roads rolled by heavy vehicles in mines. The functional components of the dust suppressant include a water-retaining and hygroscopic agent, a binder and a surfactant. The water-retaining and hygroscopic agent includes an inorganic salt, a polyhydroxy polymer and a super absorbent resin. The binder includes guar gum, sodium tripolyphosphate and a natural wood cellulose derivative. The surfactant is an alkyl glycoside.

[0007] As a further improvement of the present invention, the natural lignocellulose derivative in the binder is sodium lignocellulose.

[0008] As a further improvement of the present invention, the inorganic salt in the water-retaining and moisture-absorbing agent is magnesium sulfate, and the polyhydroxy polymer is polyethylene glycol and polyvinyl alcohol.

[0009] As a further improvement of the present invention, the binder components in the dust suppressant include 0.01 to 0.05 parts of modified guar gum, 3 to 5 parts of sodium tripolyphosphate, and 0.02 to 0.2 parts of sodium lignocellulose in parts by mass.

[0010] As a further improvement of the present invention, the components of the water-retaining and moisture-absorbing agent in the dust suppressant include, by mass, 4 to 8 parts of magnesium sulfate, 0.2 to 0.5 parts of polyethylene glycol, 0.02 to 0.2 parts of polyvinyl alcohol, and 0.01 to 0.02 parts of a water-absorbing resin.

[0011] As a further improvement of the present invention, the dust suppressant contains 0.1 to 0.5 parts by mass of alkyl glycoside.

[0012] As a further improvement of the present invention, the dust suppressant includes, by mass, 4 to 8 parts of magnesium sulfate, 0.2 to 0.5 parts of polyethylene glycol, 0.02 to 0.2 parts of polyvinyl alcohol, 0.01 to 0.02 parts of water-absorbing resin, 0.01 to 0.05 parts of modified guar gum, 3 to 5 parts of sodium tripolyphosphate, 0.02 to 0.2 parts of sodium lignocellulose, 0.1 to 0.5 parts of alkyl glycoside and the remainder of water.

[0013] As a further improvement of the present invention, when the dust suppressant is used in a mine where a heavy vehicle is rolling over a non-solidified road, the dust suppressant is evenly sprayed on the road surface at a dosage of 1.5 to 3 L / m 3 .

[0014] The present invention also provides a method for preparing the dust suppressant for non-solidified roads rolled by heavy vehicles in mines as described in any one of the above, comprising the following steps:

[0015] S1. Take a certain amount of water and heat it to 95-100°C, add 0.02-0.2 parts of polyvinyl alcohol until it is completely dissolved, then add a certain amount of water and cool it naturally to room temperature;

[0016] S2. To the solution cooled to room temperature in step S1, 0.01-0.02 parts of water-absorbing resin, 0.01-0.05 parts of modified guar gum, 3-5 parts of sodium tripolyphosphate, 0.02-0.2 parts of sodium lignocellulose, 4-8 parts of magnesium sulfate, 0.2-0.5 parts of polyethylene glycol, and 0.1-0.5 parts of alkyl polyglycoside are added in sequence, and then water is added to a total weight of 100 parts, and the mixture is mixed to obtain a special dust suppressant for non-solidified roads rolled by heavy vehicles in mines.

[0017] As a further improvement of the present invention, in step S1 and step S2, each component raw material is added while being vigorously stirred, so that the raw materials interact with each other to form a uniform dust suppression system.

[0018] The beneficial effects of the present invention are:

[0019] 1. The dust suppressant for non-solidified roads rolled by heavy vehicles in mines of the present invention and its preparation method, the functional components of the dust suppressant include water-retaining and moisture-absorbing agents, binders and surfactants, the water-retaining and moisture-absorbing agents include inorganic salts, polyhydroxy polymers and super absorbent resins, the binders include guar gum, sodium tripolyphosphate and natural wood cellulose derivatives, and the surfactant is alkyl glycoside. The present invention configures a composite dust suppressant to enable the raw materials of each component to play a synergistic role, realizes the main function of water-retaining and moisture-absorbing anti-evaporation, and the secondary dust prevention is supplementary, and takes into account certain wear resistance and anti-rolling performance. The dust suppressant has a high dust suppression rate, a long duration, and strong environmental adaptability, and is suitable for non-solidified roads rolled by heavy vehicles in mines.

[0020] 2. The present invention uses guar gum, sodium tripolyphosphate and natural lignocellulose derivatives as binders. Guar gum forms a colloid substance after meeting water, which can quickly increase the cohesiveness of the dust suppressant. Sodium tripolyphosphate is an amorphous water-soluble linear polyphosphate with good thermal stability and hygroscopicity, which plays a role in bonding and hygroscopic anti-evaporation. Natural lignocellulose derivatives have the characteristics of thickening, stabilization and film-forming, and can be combined with polyhydroxy polymers to form a protective layer, which not only inhibits the secondary aggregation and rising of micro-particle dust, but also improves its strength and rigidity, so that the environmental adaptability of the dust suppressant is enhanced. The present invention uses alkyl glycoside as a surfactant, which effectively reduces the surface tension of dust and has the effect of reducing water activity. It interacts with water-soluble polymers to prevent excessive water from penetrating into the ground. It has a high water retention rate, reduces water consumption, avoids the waste of water resources, and saves the dust suppression cost of heavy vehicles rolling on non-solidified roads in mines.

[0021] 3. The special dust suppressant for non-solidified roads rolled by heavy vehicles in mines of the present invention can improve the working environment of mines, reduce the incidence of occupational diseases, reduce the wear of vehicles by dust, extend the service life, reduce the pollution of dust to the surrounding environment, and effectively save water. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is described in detail below in conjunction with specific embodiments.

[0023] It should also be noted that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the scheme of the present invention are shown, while other details that are not closely related to the present invention are omitted.

[0024] In addition, it should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0025] A special dust suppressant for heavy vehicles rolling over non-solidified roads in mines, the functional components of the dust suppressant include a water-retaining and moisture-absorbing agent, a binder and a surfactant, the water-retaining and moisture-absorbing agent includes an inorganic salt, a polyhydroxy polymer and a super absorbent resin, the binder includes guar gum, sodium tripolyphosphate and a natural wood cellulose derivative, and the surfactant is an alkyl glycoside. The present invention configures a composite dust suppressant so that the raw materials of each component play a synergistic role, and uses inorganic salts, polyhydroxy polymers and super absorbent resins as water-retaining and moisture-absorbing agents to achieve the main function of water-retaining and moisture-absorbing anti-evaporation, and the secondary dust prevention is supplementary, while taking into account certain wear resistance and anti-rolling performance. The dust suppressant has a high dust suppression rate, a long duration, and strong environmental adaptability, and is suitable for heavy vehicles rolling over non-solidified roads in mines.

[0026] In particular, by selecting guar gum, sodium tripolyphosphate and natural wood cellulose derivatives as binders, guar gum forms a colloid substance after meeting water, achieving the effect of rapidly increasing the cohesiveness of the dust suppressant; sodium tripolyphosphate as an amorphous water-soluble linear polyphosphate has good thermal stability and good hygroscopicity, and plays the role of bonding and hygroscopic anti-evaporation; natural wood cellulose derivatives have the characteristics of thickening, stabilization and film-forming, and can be combined with polyhydroxy polymers to form a protective layer, which not only inhibits the secondary aggregation and rising of micro-particle dust, but also improves its strength and rigidity, so that the environmental adaptability of the dust suppressant is enhanced. Alkyl polyglycoside is used as a surfactant, which effectively reduces the surface tension of dust and has the effect of reducing water activity. It interacts with water-soluble polymers to prevent excessive water from penetrating into the ground. It has a high water retention rate, reduces water consumption, avoids the waste of water resources, and saves the dust suppression cost of heavy vehicles rolling on non-solidified roads in mines.

[0027] Specifically, the natural lignocellulose derivative in the binder is sodium lignocellulose. The inorganic salt in the water-retaining and hygroscopic agent is magnesium sulfate, and the polyhydroxy polymers are polyethylene glycol and polyvinyl alcohol. The components of the binder in the dust suppressant include 0.01 to 0.05 parts of modified guar gum, 3 to 5 parts of sodium tripolyphosphate, and 0.02 to 0.2 parts of sodium lignocellulose by weight. The components of the water-retaining and hygroscopic agent in the dust suppressant include 4 to 8 parts of magnesium sulfate, 0.2 to 0.5 parts of polyethylene glycol, 0.02 to 0.2 parts of polyvinyl alcohol, and 0.01 to 0.02 parts of water-absorbing resin by weight. The dust suppressant contains 0.1 to 0.5 parts by weight of alkyl glycoside.

[0028] That is, in some specific embodiments, the dust suppressant includes, by mass, 4 to 8 parts of magnesium sulfate, 0.2 to 0.5 parts of polyethylene glycol, 0.02 to 0.2 parts of polyvinyl alcohol, 0.01 to 0.02 parts of water-absorbing resin, 0.01 to 0.05 parts of modified guar gum, 3 to 5 parts of sodium tripolyphosphate, 0.02 to 0.2 parts of sodium lignocellulose, 0.1 to 0.5 parts of alkyl glycoside and the remainder of water.

[0029] When dust suppressant is used on non-solidified roads in mines, it should be sprayed evenly on the road surface at a dosage of 1.5 to 3 L / m 3 The special dust suppressant for heavy vehicles rolling over non-solidified roads in mines can improve the working environment in mines, reduce the incidence of occupational diseases, reduce the wear of vehicles by dust, extend the service life, reduce the pollution of dust to the surrounding environment, and effectively save water.

[0030] A method for preparing a special dust suppressant for non-solidified roads rolled by heavy vehicles in mines, comprising the following steps:

[0031] S1. Take a certain amount of water and heat it to 95-100°C, add 0.02-0.2 parts of polyvinyl alcohol until it is completely dissolved, then add a certain amount of water and cool it naturally to room temperature;

[0032] S2. To the solution cooled to room temperature in step S1, 0.01-0.02 parts of water-absorbing resin, 0.01-0.05 parts of modified guar gum, 3-5 parts of sodium tripolyphosphate, 0.02-0.2 parts of sodium lignocellulose, 4-8 parts of magnesium sulfate, 0.2-0.5 parts of polyethylene glycol, and 0.1-0.5 parts of alkyl polyglycoside are added in sequence, and then water is added to a total weight of 100 parts, and the mixture is mixed to obtain a special dust suppressant for non-solidified roads rolled by heavy vehicles in mines.

[0033] Specifically, in step S1 and step S2, each component raw material is added while being vigorously stirred, so that each raw material interacts with each other to form a uniform dust suppression system.

[0034] Example 1

[0035] This embodiment provides a method for preparing a special dust suppressant for non-solidified roads rolled by heavy vehicles in mines, comprising the following steps:

[0036] S1. Take 10 parts by mass of water and heat it to 95-100°C in a stirring tank. After strong stirring, add 0.1 parts of polyvinyl alcohol until it is completely dissolved and stop stirring. Add 80.13 parts of unheated water and cool naturally to room temperature.

[0037] S2. To the solution cooled to room temperature in step S1, 0.01 parts of water-absorbing resin, 0.01 parts of modified guar gum, 4 parts of sodium tripolyphosphate, 0.05 parts of sodium lignocellulose, 5 parts of magnesium sulfate, 0.5 parts of polyethylene glycol, and 0.2 parts of alkyl polyglycoside are added in sequence, and then water is added to a total weight of 100 parts. After mixing, a special dust suppressant for non-solidified roads crushed by heavy vehicles in mines is obtained.

[0038] After the road section where the dust suppressant is to be used (a non-solidified road rolled by a heavy vehicle in a mine in Inner Mongolia) is leveled and rolled to compactness by a road roller, the dust suppressant prepared in Example 1 is loaded into a sprinkler truck and sprayed evenly on the road surface at a dosage of 2 L / m 3Under natural conditions of 31℃ and 5.4m / s wind speed, vehicles can be driven after the spraying until there is no water on the surface. After spraying, the dust suppression efficiency can reach more than 80% for 6 hours, the water retention rate is 82% for 3 hours, and 65% for 6 hours, which is more than 6 times that of the dust suppression by watering only (the dust suppression time of 80% dust suppression efficiency is only 40 minutes).

[0039] Comparative Example 1

[0040] Comparative Example 1 provides a method for preparing a special dust suppressant for non-solidified roads compacted by heavy vehicles in mines. Compared with Example 1, the difference is that in step S2, modified guar gum is not added, and the rest is roughly the same as Example 1, which will not be repeated here.

[0041] Comparative Example 2

[0042] Comparative Example 2 provides a method for preparing a special dust suppressant for non-solidified roads compacted by heavy vehicles in mines. Compared with Example 1, the difference is that in step S2, sodium tripolyphosphate is not added, and the rest is roughly the same as Example 1, which will not be repeated here.

[0043] Comparative Example 3

[0044] Comparative Example 3 provides a method for preparing a special dust suppressant for non-solidified roads compacted by heavy vehicles in mines. Compared with Example 1, the difference is that in step S2, sodium lignocellulose is not added, and the rest is roughly the same as Example 1, which will not be repeated here.

[0045] Comparative Example 4

[0046] Comparative Example 4 provides a method for preparing a special dust suppressant for non-solidified roads compacted by heavy vehicles in mines. Compared with Example 1, the difference is that in step S2, sodium carboxymethyl cellulose is used instead of sodium lignocellulose, and the rest is roughly the same as Example 1 and will not be repeated here.

[0047] Comparative Example 5

[0048] Comparative Example 5 provides a method for preparing a special dust suppressant for non-solidified roads compacted by heavy vehicles in mines. Compared with Example 1, the difference is that in step S2, alkyl glycoside is not added, and the rest is roughly the same as Example 1, which will not be repeated here.

[0049] Comparative Example 6

[0050] Comparative Example 6 provides a method for preparing a special dust suppressant for non-solidified roads compacted by heavy vehicles in mines. Compared with Example 1, the difference is that in step S2, tetradecyl dihydroxyethyl amine oxide is used instead of alkyl glycoside, and the rest is roughly the same as Example 1 and will not be repeated here.

[0051] The dust suppressants prepared in Comparative Examples 1 to 6 were loaded into a sprinkler truck and sprayed evenly on the road surface at a dosage of 2 L / m 3 After spraying, the dust seeps down to the surface without water accumulation and then the vehicle can be driven. The test results of dust suppression efficiency, 3-hour water retention rate and 6-hour water retention rate after continuous vehicle passing for 6 hours after spraying are shown in the following table.

[0052] Table 1 Application test results of dust suppressants in Example 1 and Comparative Examples 1 to 6

[0053] Dust suppression rate / %(6h) Water retention rate / %(3h) Water retention rate / %(6h) Example 1 84 82 67 Comparative Example 1 75 79 59 Comparative Example 2 73 77 61 Comparative Example 3 71 75 57 Comparative Example 4 80 80 60 Comparative Example 5 77 78 62 Comparative Example 6 79 80 59

[0054] As shown in Table 1, the dust suppressant application test results of Example 1 and Comparative Examples 1 to 6 show that when one of modified guar gum, sodium tripolyphosphate, sodium lignocellulose or alkyl glycoside is missing, or other materials are used instead, the dust suppressant obtained for dust suppression on non-solidified mine roads will be significantly reduced. Example 1 configures a composite dust suppressant to enable the raw materials of each component to play a synergistic role, achieves the main function of water retention, moisture absorption and anti-evaporation, and prevents secondary dust as a supplement, while taking into account certain wear resistance and anti-rolling performance. The dust suppressant has a high dust suppression rate, a long duration, and strong environmental adaptability, and is suitable for non-solidified roads rolled by heavy vehicles in mines.

[0055] Example 2

[0056] The present embodiment provides a method for preparing a special dust suppressant for non-solidified roads compacted by heavy vehicles in mines. Compared with Example 1, the difference lies in that, in step S2, 0.02 parts of water-absorbing resin, 0.05 parts of modified guar gum, 3 parts of sodium tripolyphosphate, 0.2 parts of sodium lignocellulose, 4 parts of magnesium sulfate, 0.5 parts of polyethylene glycol, and 0.5 parts of alkyl polyglycoside are added in sequence, and then water is added to a total mass of 100 parts. The rest is substantially the same as in Example 1 and will not be repeated here.

[0057] Comparative Example 7

[0058] Comparative Example 7 provides a method for preparing a special dust suppressant for non-solidified roads compacted by heavy vehicles in mines. Compared with Example 1, the difference is that in step S1, 70 parts of unheated water are added, and in step S2, 0.1 parts of water-absorbing resin, 10 parts of magnesium sulfate, and 1.0 parts of polyethylene glycol are added. The rest is roughly the same as Example 1 and will not be repeated here.

[0059] Comparative Example 8

[0060] Comparative Example 8 provides a method for preparing a special dust suppressant for non-solidified roads compacted by heavy vehicles in mines. Compared with Example 1, the difference lies in that, in step S1, 10 parts by mass of water are not heated, and 70 parts of unheated water are subsequently added; in step S2, 0.1 parts of modified guar gum, 7 parts of sodium tripolyphosphate, and 0.5 parts of sodium lignocellulose are added; the rest are substantially the same as in Example 1 and will not be repeated here.

[0061] Comparative Example 9

[0062] Comparative Example 9 provides a method for preparing a special dust suppressant for non-solidified roads compacted by heavy vehicles in mines. Compared with Example 1, the difference lies in that in step S1, 70 parts of unheated water are added, and in step S2, 1.0 part of alkyl glycoside is added. The rest is roughly the same as Example 1 and will not be repeated here.

[0063] The dust suppressants prepared in Example 2 and Comparative Examples 7 to 9 were loaded into a sprinkler truck and sprayed evenly on the road surface at a dosage of 2 L / m 3 After spraying, the dust seeps down to the surface without water accumulation and then the vehicle can be driven. The test results of dust suppression efficiency, 3-hour water retention rate and 6-hour water retention rate after continuous vehicle passing for 6 hours after spraying are shown in the following table.

[0064] Table 2 Application test results of dust suppressant method in Example 2 and Comparative Examples 7 to 9

[0065] Dust suppression rate / %(6h) Water retention rate / %(3h) Water retention rate / %(6h) Example 2 81.5 83 65 Comparative Example 7 81 84 65 Comparative Example 8 78 79 61 Comparative Example 9 80 81 63

[0066] It can be seen from Table 2 that the dust suppression effect of the dust suppressant prepared in Comparative Example 8 becomes worse without heating. Although the concentrations of some components are increased in Comparative Examples 7 and 9, the dust suppression effect is not increased to the same extent, and the increase in concentration also increases the dust suppression cost.

[0067] In summary, the present invention provides a special dust suppressant for heavy vehicles rolling on non-solidified roads in mines and a preparation method thereof. The functional components of the dust suppressant include a water-retaining and moisture-absorbing agent, a binder and a surfactant. The water-retaining and moisture-absorbing agent includes an inorganic salt, a polyhydroxy polymer and a super absorbent resin. The binder includes guar gum, sodium tripolyphosphate and a natural lignocellulose derivative, and the surfactant is an alkyl glycoside. The present invention configures a composite dust suppressant so that the raw materials of each component play a synergistic role, realizes the main function of water-retaining and moisture-absorbing anti-evaporation, and prevents secondary dust as a supplement, and takes into account certain wear resistance and anti-rolling performance. The dust suppressant has a high dust suppression rate, a long duration, and strong environmental adaptability. It is suitable for heavy vehicles rolling on non-solidified roads in mines, can improve the working environment of mines, reduce the incidence of occupational diseases, reduce the wear of dust on vehicles, extend the service life, and reduce the pollution of dust to the surrounding environment at the same time, and effectively save water.

[0068] The above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the present invention.

Claims

1. A dust suppressant specially used for non-solidified roads rolled by heavy vehicles in mines, characterized in that: The functional components of the dust suppressant include a water-retaining and moisture-absorbing agent, a binder and a surfactant. The water-retaining and moisture-absorbing agent includes an inorganic salt, a polyhydroxy polymer and a highly absorbent resin. The binder includes guar gum, sodium tripolyphosphate and a natural wood cellulose derivative. The surfactant is an alkyl glycoside.

2. The special dust suppressant for non-solidified roads rolled by heavy vehicles in mines according to claim 1, characterized in that: The natural lignocellulose derivative in the binder is sodium lignocellulose.

3. The dust suppressant for non-solidified roads crushed by heavy vehicles in mines according to claim 1, characterized in that: The inorganic salt in the water-retaining and moisture-absorbing agent is magnesium sulfate, and the polyhydroxy polymer is polyethylene glycol and polyvinyl alcohol.

4. The special dust suppressant for non-solidified roads rolled by heavy vehicles in mines according to claim 2, characterized in that: The binder components in the dust suppressant include 0.01-0.05 parts of modified guar gum, 3-5 parts of sodium tripolyphosphate, and 0.02-0.2 parts of sodium lignocellulose by weight.

5. The dust suppressant for non-solidified roads crushed by heavy vehicles in mines according to claim 3, characterized in that: The components of the water-retaining and moisture-absorbing agent in the dust suppressant include, by weight, 4 to 8 parts of magnesium sulfate, 0.2 to 0.5 parts of polyethylene glycol, 0.02 to 0.2 parts of polyvinyl alcohol, and 0.01 to 0.02 parts of a water-absorbing resin.

6. The dust suppressant for non-solidified roads rolled by heavy vehicles in mines according to claim 1, characterized in that: The dust suppressant contains 0.1 to 0.5 parts by weight of alkyl glycoside.

7. The dust suppressant for non-solidified roads rolled by heavy vehicles in mines according to claim 1, characterized in that: The dust suppressant comprises, by weight, 4 to 8 parts of magnesium sulfate, 0.2 to 0.5 parts of polyethylene glycol, 0.02 to 0.2 parts of polyvinyl alcohol, 0.01 to 0.02 parts of water-absorbing resin, 0.01 to 0.05 parts of modified guar gum, 3 to 5 parts of sodium tripolyphosphate, 0.02 to 0.2 parts of sodium lignocellulose, 0.1 to 0.5 parts of alkyl glycoside and the balance of water.

8. The special dust suppressant for non-solidified roads rolled by heavy vehicles in mines according to claim 7, characterized in that: When the dust suppressant is used on a non-solidified road where a heavy vehicle in a mine is rolling, it is evenly sprayed on the road surface at a dosage of 1.5 to 3 L / m 3 .

9. A method for preparing a special dust suppressant for non-solidified roads rolled by heavy vehicles in mines according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1. Take a certain amount of water and heat it to 95-100°C, add 0.02-0.2 parts of polyvinyl alcohol until it is completely dissolved, then add a certain amount of water and cool it naturally to room temperature; S2. To the solution cooled to room temperature in step S1, 0.01-0.02 parts of water-absorbing resin, 0.01-0.05 parts of modified guar gum, 3-5 parts of sodium tripolyphosphate, 0.02-0.2 parts of sodium lignocellulose, 4-8 parts of magnesium sulfate, 0.2-0.5 parts of polyethylene glycol, and 0.1-0.5 parts of alkyl polyglycoside are added in sequence, and then water is added to a total weight of 100 parts, and the mixture is mixed to obtain a special dust suppressant for non-solidified roads rolled by heavy vehicles in mines.

10. The method for preparing a special dust suppressant for non-solidified roads rolled by heavy vehicles in mines according to claim 9, characterized in that: In step S1 and step S2, each component raw material is added while being vigorously stirred, so that each raw material interacts with each other to form a uniform dust suppression system.