Fly ash dust suppressant and preparation method thereof

Abstract

The invention discloses a fly ash dust suppressant and a preparation method thereof, and the fly ash dust suppressant comprises the following components in parts by mass: 200-600 parts of a fly ash-based inorganic binder, 5-20 parts of an organic binder, 1-3 parts of a binding film-forming agent, 2-10 parts of a graphite oxide-zinc sulfide composite material, 5-15 parts of a mixture of water-soluble starch and hydroxypropyl methyl cellulose, and 1-3 parts of magnesium chloride. 1-3 parts of a seaweed extract and 1-3 parts of nibergin complex ester; the invention has the following beneficial effects: by using the composite structure of graphite oxide and zinc sulfide, the capturing, adsorption and agglomeration capabilities of dust particles are effectively improved, a compact net-shaped structure is formed, the dust particles are locked in the net-shaped structure, and the structure not only significantly reduces flying and deposition of particles such as fly ash and the like, reduces environmental pollution, but also improves the service life of the fly ash and the like. In addition, functional factors in the dust suppressant can also play roles in preventing erosion and resisting scouring, the generation of flying dust is continuously inhibited, and a powerful guarantee is provided for environmental protection and staff health.

Description

Technical Field

[0001] The present invention belongs to the technical field of dust suppressants, and particularly relates to a fly ash dust suppressant and a preparation method thereof. Background Art

[0002] The fly ash dust suppressant, in a broad sense, can be regarded as a kind of dust suppressant; the dust suppressant is usually composed of a new type of multifunctional polymer combination. The cross-linking degree between these polymer molecules forms a network structure, and there are various ionic groups between the molecules, which can generate a strong affinity with ions, so as to play the role of capturing, adsorbing, and agglomerating dust particles, locking them within the network structure, and achieving the dust prevention effect.

[0003] With the enhancement of environmental awareness, reducing dust pollution has become an important task in all industries; the application of fly ash dust suppressants can significantly reduce the flying and deposition of fly ash and reduce environmental pollution; the flying of fly ash not only pollutes the environment but also may pose a threat to the health of employees. Using fly ash dust suppressants can effectively reduce the flying of dust and reduce the risk of employees being exposed to the dust environment.

[0004] A fly ash-based dust suppressant and its application in coal dust suppression with the patent publication number of CN118725827B disclose components including the following parts by mass: 1774 - 6500 parts of fly ash-based inorganic binder, 5 - 50 parts of organic binder, 0.2 - 6 parts of binder film-forming agent, 0.4 - 0.8 parts of broad-spectrum bacteriostatic agent, 10 - 40 parts of hygroscopic agent, and 0.2 - 0.4 parts of reinforcing fiber; the fly ash-based inorganic binder is fly ash silicon extraction liquid, the organic binder includes a first organic binder and a second organic binder, the first organic binder is polyacrylamide, and the second organic binder includes one or more of sodium carboxymethyl cellulose, hydroxypropyl methyl cellulose, xanthan gum, and guar gum.

[0005] Although traditional dust suppressants can inhibit dust flying to a certain extent, there are problems such as unstable effect, high cost, or complex preparation. Summary of the Invention

[0006] The purpose of the present invention is to provide a fly ash dust suppressant and a preparation method thereof, which are efficient, environmentally friendly, and simple to prepare.

[0007] To achieve the above purpose, the present invention provides the following technical solution: A fly ash dust suppressant, comprising the following components in parts by mass: 200 - 600 parts of fly ash-based inorganic binder, 5 - 20 parts of organic binder, 1 - 3 parts of binder film-forming agent, 2 - 10 parts of graphene oxide-zinc sulfide composite, 5 - 15 parts of a mixture of water-soluble starch and hydroxypropyl methyl cellulose, 1 - 3 parts of magnesium chloride, 1 - 3 parts of seaweed extract, and 1 - 3 parts of nipagin ester compound.

[0008] As a preferred technical solution of the present invention, the organic binder includes polyacrylamide and sodium carboxymethyl cellulose.

[0009] As a preferred technical solution of the present invention, the fly ash-based inorganic binder is one of alumina and iron oxide.

[0010] As a preferred technical solution of the present invention, the film-forming binder is one of polyvinyl butyral and polyvinyl acetate.

[0011] The present invention also discloses a preparation method of a fly ash dust suppressant, comprising the following steps: Mix the fly ash-based inorganic binder, the organic binder, and the film-forming binder evenly to obtain a mixture; Add the graphite oxide-zinc sulfide composite material to the above mixture; Add a mixture of water-soluble starch and hydroxypropyl methylcellulose, and add deionized water, and stir with a magnetic stirrer to make them fully mixed and dissolved; Add magnesium chloride and stir to make them fully mixed and react; Add seaweed extract and nipagin ester complex, and continue to stir and mix evenly.

[0012] As a preferred technical solution of the present invention, the water-soluble starch and hydroxypropyl methylcellulose are mixed in a mass ratio of 7:1.

[0013] As a preferred technical solution of the present invention, the stirring time is 5-10 min.

[0014] As a preferred technical solution of the present invention, add seaweed extract and nipagin ester complex, continue to stir and mix evenly, and finally place it in a sealed container for packaging and storage.

[0015] Compared with the prior art, the beneficial effects of the present invention are: Utilizing the composite structure of graphite oxide and zinc sulfide, the ability to capture, adsorb, and agglomerate dust particles is effectively improved, forming a tight network structure that locks the dust particles therein. This structure not only significantly reduces the flying and deposition of particulate matters such as fly ash, reduces environmental pollution, but also the functional factors in the dust suppressant can play a role in anti-corrosion and anti-scouring, continuously inhibiting the generation of dust, providing a strong guarantee for environmental protection and employee health; Compared with traditional powder dust suppressants, the liquid environmental protection dust suppressant of the present invention is easier to use. It is highly soluble in water and only requires simple stirring after mixing water with the dust suppressant during use, without the need for any large-scale special equipment. This feature not only simplifies the usage process, improves work efficiency, but also reduces equipment costs and maintenance costs. At the same time, the raw materials of the present invention are easily obtainable, safe, environmentally friendly, and economical in price, effectively controlling the preparation cost of the dust suppressant; The preparation method of the present invention adopts an innovative process, which composites graphite oxide with good conductivity and ultra-high specific surface area with zinc sulfide, not only improving the performance of the dust suppressant, but also providing new ideas for material research and development in related fields; at the same time, the dust suppressant shows good stability and persistence in practical applications, can meet the dust suppression requirements in various complex environments, and has high practical value; The preparation process of the dust suppressant is simple, the raw materials are easily obtainable and recyclable, reducing the consumption of natural resources and environmental pressure, and contributing to the green development of related industries. Brief Description of the Drawings

[0016] Figure 1 It is a flow chart of the preparation method of the present invention. Detailed Embodiments

[0017] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0018] Embodiment 1 Please refer to Figure 1 , which is the first embodiment of the present invention. This embodiment provides a fly ash dust suppressant, including the following components in parts by mass: 200 parts of fly ash-based inorganic binder, 5 parts of organic binder, 1 part of binder film-forming agent, 2 parts of graphite oxide-zinc sulfide composite material, 5 parts of a mixture of water-soluble starch and hydroxypropyl methylcellulose, 1 part of magnesium chloride, 1 part of seaweed extract, and 1 part of nipagin compound ester; the organic binder includes polyacrylamide and sodium carboxymethylcellulose; the fly ash-based inorganic binder is alumina; the binder film-forming agent is polyvinyl butyral.

[0019] A preparation method of a fly ash dust suppressant includes the following steps: Mix the fly ash-based inorganic binder, organic binder, and binder film-forming agent evenly to obtain a mixture; Add the graphite oxide-zinc sulfide composite material to the above mixture; Add a mixture of water-soluble starch and hydroxypropyl methylcellulose, and add deionized water. Stir with a magnetic stirrer to fully mix and dissolve them. The stirring time is 5 minutes. The water-soluble starch and hydroxypropyl methylcellulose are mixed in a mass ratio of 7:1. Add magnesium chloride and stir to fully mix and react. The stirring time is 5 minutes. Add the seaweed extract and nipagin complex ester, and continue to stir to mix evenly. The stirring time is 5 minutes. Finally, place it in a sealed container for encapsulation and storage.

[0020] Example 2 Please refer to Figure 1 , which is the second embodiment of the present invention. This embodiment provides a fly ash dust suppressant, including the following components in parts by mass: 400 parts of fly ash-based inorganic binder, 12 parts of organic binder, 2 parts of binder film-forming agent, 6 parts of graphite oxide-zinc sulfide composite material, 10 parts of a mixture of water-soluble starch and hydroxypropyl methylcellulose, 2 parts of magnesium chloride, 2 parts of seaweed extract, and 2 parts of nipagin complex ester; the organic binder includes polyacrylamide and sodium carboxymethylcellulose; the fly ash-based inorganic binder is iron oxide; the binder film-forming agent is polyvinyl acetate.

[0021] A preparation method of a fly ash dust suppressant includes the following steps: Mix the fly ash-based inorganic binder, organic binder, and binder film-forming agent evenly to obtain a mixture. Add the graphite oxide-zinc sulfide composite material to the above mixture. Add a mixture of water-soluble starch and hydroxypropyl methylcellulose, and add deionized water. Stir with a magnetic stirrer to fully mix and dissolve them. The stirring time is 10 minutes. The water-soluble starch and hydroxypropyl methylcellulose are mixed in a mass ratio of 7:1. Add magnesium chloride and stir to fully mix and react. The stirring time is 10 minutes. Add the seaweed extract and nipagin complex ester, and continue to stir to mix evenly. The stirring time is 10 minutes. Finally, place it in a sealed container for encapsulation and storage.

[0022] Example 3 Please refer to Figure 1 , which is the third embodiment of the present invention. This embodiment provides a fly ash dust suppressant, including the following components in parts by mass: 600 parts of fly ash-based inorganic binder, 20 parts of organic binder, 3 parts of binder film-forming agent, 10 parts of graphite oxide-zinc sulfide composite material, 15 parts of a mixture of water-soluble starch and hydroxypropyl methylcellulose, 3 parts of magnesium chloride, 3 parts of seaweed extract, and 3 parts of nipagin complex ester; the organic binder includes polyacrylamide and sodium carboxymethylcellulose; the fly ash-based inorganic binder is alumina; the binder film-forming agent is polyvinyl butyral.

[0023] A preparation method of a fly ash dust suppressant, comprising the following steps: Mix fly ash-based inorganic binder, organic binder, and film-forming binder evenly to obtain a mixture; Add graphene oxide-zinc sulfide composite material to the above mixture; Add a mixture of water-soluble starch and hydroxypropyl methylcellulose, and add deionized water, and stir with a magnetic stirrer to make them fully mixed and dissolved; the stirring time is 10 min; the water-soluble starch and hydroxypropyl methylcellulose are mixed according to a mass ratio of 7:1; Add magnesium chloride and stir to make them fully mixed and react; the stirring time is 10 min; Add seaweed extract and nipagin ester compound, and continue to stir and mix evenly; the stirring time is 10 min; finally, place it in a sealed container for packaging and storage.

[0024] Analyze the surface morphologies of pulverized coal samples sprayed with water and the dust suppressant respectively. The coal sample sprayed with water shows a blocky structure with distinct edges and corners, there are large gaps between the particles, the arrangement is loose, and there is almost no adhesion between the pulverized coal particles, indicating that spraying water can only wet and suppress dust in a short time; The pulverized coal particles of the coal sample sprayed with the dust suppressant are arranged tightly, and a thin film is formed on the surface of the pulverized coal. This thin film can effectively prevent the coal sample from being scattered by external forces during stacking and transportation, indicating that the dust suppressant has a good dust suppression effect.

[0025] Although the embodiments of the present invention have been shown and described, as detailed in the above description, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A fly ash dust suppressant, characterized in that: The invention comprises the following components in parts by mass: 200-600 parts of fly ash-based inorganic binder, 5-20 parts of organic binder, 1-3 parts of bonding film-forming agent, 2-10 parts of graphite oxide-zinc sulfide composite material, 5-15 parts of water-soluble starch and hydroxypropyl methylcellulose mixture, 1-3 parts of magnesium chloride, 1-3 parts of seaweed extract, and 1-3 parts of Nibagin composite ester; the organic binder comprises polyacrylamide and sodium carboxymethyl cellulose; the fly ash-based inorganic binder is one of aluminum oxide and iron oxide; the bonding film-forming agent is one of polyvinyl butyral and polyvinyl acetate.

2. The method for preparing a fly ash dust suppressant according to claim 1, characterized in that: The steps include: The fly ash-based inorganic binder, the organic binder, and the bonding film-forming agent are uniformly mixed to obtain a mixture; adding a graphite oxide-zinc sulfide composite material to the above mixture; Add a mixture of water-soluble starch and hydroxypropyl methylcellulose, and add deionized water, and stir with a magnetic stirrer to fully mix and dissolve; Add magnesium chloride and stir to fully mix and react; Add seaweed extract and Nibagin complex ester and continue stirring to mix evenly.

3. The method for preparing a fly ash dust suppressant according to claim 2, characterized in that: The water-soluble starch and hydroxypropyl methylcellulose are mixed in a mass ratio of 7:

1.

4. The method for preparing a fly ash dust suppressant according to claim 2, characterized in that: The stirring time is 5-10 min.

5. The method for preparing a fly ash dust suppressant according to claim 2, characterized in that: Add seaweed extract and Nibagin complex ester, continue stirring to mix evenly, and finally place in a sealed container for packaging and storage.

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