CN116768587A - Bamboo high-strength gypsum and preparation method thereof - Google Patents
Bamboo high-strength gypsum and preparation method thereof Download PDFInfo
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- CN116768587A CN116768587A CN202310601219.6A CN202310601219A CN116768587A CN 116768587 A CN116768587 A CN 116768587A CN 202310601219 A CN202310601219 A CN 202310601219A CN 116768587 A CN116768587 A CN 116768587A
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/145—Calcium sulfate hemi-hydrate with a specific crystal form
- C04B28/146—Calcium sulfate hemi-hydrate with a specific crystal form alpha-hemihydrate
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/0445—Synthetic gypsum, e.g. phosphogypsum
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
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- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The embodiment of the application relates to the technical field of building materials and solid waste treatment, in particular to bamboo high-strength gypsum and a preparation method thereof. The bamboo high-strength gypsum comprises raw materials of phosphogypsum, alpha-type high-strength gypsum, bamboo fiber, sodium dodecyl sulfate, sodium silicate, sodium methylnaphthalene sulfonate, succinic acid, sodium trimetaphosphate and water; 50 to 70 percent of phosphogypsum, 0 to 30 percent of alpha-type high-strength gypsum, 0 to 30 percent of bamboo fiber, 0 to 1 percent of sodium dodecyl sulfate, 0 to 1 percent of sodium silicate, 0 to 0.5 percent of sodium methylnaphthalene sulfonate, 0 to 0.05 percent of succinic acid and 0 to 0.05 percent of sodium trimetaphosphate; the ratio of the weight of water to the total weight of phosphogypsum, alpha-type high-strength gypsum and sodium methylnaphthalene sulfonate is 0.4-0.8. By the mode, the novel application of phosphogypsum is expanded, the waste utilization of phosphogypsum is increased, the occupation of the phosphogypsum on land resources is reduced, and the damage of phosphogypsum on ecological environment is reduced.
Description
Technical Field
The embodiment of the application relates to the technical field of building materials and solid waste treatment, in particular to bamboo high-strength gypsum and a preparation method thereof.
Background
Phosphogypsum is a solid waste residue generated in the wet process of producing phosphoric acid, and the main component of phosphogypsum is calcium sulfate dihydrate (CaSO) 4 ·2H 2 O) and also contains a small amount of incompletely decomposed impurities such as phosphorite, fluorine compound, phosphoric acid, organic matter, acid insoluble matter, iron-aluminum compound, heavy metal, etc., which is yellowish white in appearance,A pale yellow, pale white or dark grey finely powdered solid.
In recent years, the annual average discharge amount of the phosphogypsum in China exceeds 7000 ten thousand tons, and the accumulated accumulation amount reaches more than 3 hundred million tons. Statistics show that the annual newly increased stockpiling amount of phosphogypsum is still kept around 4500 ten thousand tons in the last five years. Therefore, phosphogypsum occupies a large amount of land resources and destroys the ecological environment.
Disclosure of Invention
In view of the above problems, the embodiment of the application provides a bamboo high-strength gypsum and a preparation method thereof, so as to expand the new application of phosphogypsum, increase the waste utilization of phosphogypsum, reduce the occupation of phosphogypsum on land resources and reduce the damage of phosphogypsum on ecological environment.
According to an aspect of an embodiment of the present application, there is provided a bamboo high-strength gypsum including raw materials phosphogypsum, alpha-type high-strength gypsum, bamboo fiber, sodium dodecyl sulfate, sodium silicate, sodium methylnaphthalene sulfonate, succinic acid, sodium trimetaphosphate and water; 50 to 70 percent of phosphogypsum, 0 to 30 percent of alpha-type high-strength gypsum, 0 to 30 percent of bamboo fiber, 0 to 1 percent of sodium dodecyl sulfate, 0 to 1 percent of sodium silicate, 0 to 0.5 percent of sodium methylnaphthalene sulfonate, 0 to 0.05 percent of succinic acid and 0 to 0.05 percent of sodium trimetaphosphate; the ratio of the weight of water to the total weight of phosphogypsum, alpha-type high-strength gypsum and sodium methylnaphthalene sulfonate is 0.4-0.8.
The bamboo high-strength gypsum disclosed by the application has the advantages that the phosphogypsum is taken as the main raw material, so that the waste utilization of the phosphogypsum is increased, the occupation of the phosphogypsum on land resources is reduced, and the damage of the phosphogypsum on environmental resources is reduced. The bamboo high-strength gypsum also takes alpha-strength gypsum, sodium dodecyl sulfate, sodium silicate, sodium methylnaphthalene sulfonate, succinic acid, sodium trimetaphosphate and water as raw materials, and the weight percentage of the phosphogypsum is 50-70%, the alpha-strength gypsum is 0-30%, the sodium dodecyl sulfate is 0-1%, the sodium silicate is 0-1%, the sodium methylnaphthalene sulfonate is 0-0.5%, the succinic acid is 0-0.05% and the sodium trimetaphosphate is 0-0.05%, and the ratio of the weight of the water to the total weight of the phosphogypsum, the alpha-strength gypsum and the sodium methylnaphthalene sulfonate is 0.4-0.8, so that the prepared bamboo high-strength gypsum has high strength and compactness. Because 0-30% of bamboo fiber is added into the raw materials of the bamboo high-strength gypsum, the prepared bamboo high-strength gypsum is light. Therefore, the bamboo high-strength gypsum has high strength, high compactness and light weight.
In an alternative embodiment, the bamboo high-strength gypsum further comprises raw materials of sodium methyl silicate and triethanolamine, wherein the raw materials comprise, by weight, 0-2% of sodium methyl silicate and 0-0.5% of triethanolamine.
In an alternative embodiment, the main component of the alpha-type high-strength gypsum is alpha-calcium sulfate hemihydrate, the content of the alpha-calcium sulfate hemihydrate in the alpha-type high-strength gypsum is more than or equal to 90 percent by weight, the 2h flexural strength of the alpha-calcium sulfate hemihydrate is more than or equal to 5.0MPa, and the compressive strength of the alpha-calcium sulfate hemihydrate is more than or equal to 45MPa.
In an alternative embodiment, the alpha-form high strength gypsum has a Bo specific surface area of 100 to 340m 2 /kg。
In an alternative embodiment, the alpha-form high strength gypsum has an initial set time of greater than 5 minutes and a final set time of less than 30 minutes.
In an alternative embodiment, the bamboo fibers are natural bamboo fibers, and the average length of the bamboo fibers is less than 30mm.
In an alternative embodiment, the bamboo high strength gypsum is formed using a compression molding process.
In an alternative embodiment, the pressure of the compression molding process is between 0.1 and 1.0MPa.
In an alternative embodiment, the curing temperature of the bamboo high strength gypsum is 25+ -2deg.C and the curing time is 7-10 days.
According to another aspect of the embodiment of the present application, there is also provided a method for preparing high strength gypsum of bamboo, the method comprising preparing phosphogypsum, alpha-type high strength gypsum, bamboo fiber, sodium dodecyl sulfate, sodium silicate, sodium methylnaphthalene sulfonate, succinic acid, sodium trimetaphosphate and water, wherein the phosphogypsum is 50-70% by weight, the alpha-type high strength gypsum is 0-30% by weight, the bamboo fiber is 0-30% by weight, the sodium dodecyl sulfate is 0-1% by weight, the sodium silicate is 0-1% by weight, the sodium methylnaphthalene sulfonate is 0-0.5% by weight, the succinic acid is 0-0.05% by weight and the sodium trimetaphosphate is 0-0.05% by weightThe ratio of the weight of water to the total weight of phosphogypsum, alpha-type high-strength gypsum and sodium methylnaphthalene sulfonate is 0.4-0.8; dispersing bamboo fibers; placing phosphogypsum, alpha-type high-strength gypsum and bamboo fibers in a stirrer to mix and stir for 20-30 min, so as to obtain a uniform mixture; adding a part of water into the mixture of sodium dodecyl sulfate, sodium silicate, succinic acid and sodium trimetaphosphate, heating the mixture added with water to 40-60 ℃, and cutting the mixture with a shearing machine at 2500-3500 r.min -1 Shearing the heated mixture at the rotating speed for 10-30 min to obtain uniform emulsion; adding the other part of the emulsion and water into the mixture, stirring for 5-10min to obtain a semi-finished product of the bamboo high-strength gypsum, and forming and curing the semi-finished product of the bamboo high-strength gypsum to form the bamboo high-strength gypsum.
The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1 is a schematic flow chart of a preparation method of bamboo high-strength gypsum according to an embodiment of the application.
Detailed Description
Embodiments of the technical scheme of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical aspects of the present application, and thus are merely examples, and are not intended to limit the scope of the present application.
At present, a large amount of land resources are occupied by the large amount of phosphogypsum emission, and the ecological environment is destroyed.
In order to solve the problems, according to one aspect of the embodiments of the present application, there is provided a bamboo high-strength gypsum including raw materials phosphogypsum, alpha-type high-strength gypsum, bamboo fiber, sodium dodecyl sulfate, sodium silicate, sodium methylnaphthalene sulfonate, succinic acid, sodium trimetaphosphate and water; 50 to 70 percent of phosphogypsum, 0 to 30 percent of alpha-type high-strength gypsum, 0 to 30 percent of bamboo fiber, 0 to 1 percent of sodium dodecyl sulfate, 0 to 1 percent of sodium silicate, 0 to 0.5 percent of sodium methylnaphthalene sulfonate, 0 to 0.05 percent of succinic acid and 0 to 0.05 percent of sodium trimetaphosphate; the ratio of the weight of water to the total weight of phosphogypsum, alpha-type high-strength gypsum and sodium methylnaphthalene sulfonate is 0.4-0.8.
According to the embodiment of the application, phosphogypsum is used as a main raw material of the bamboo high-strength gypsum, so that the utilization of phosphogypsum is increased. The main component of the calcium sulfate dihydrate in the phosphogypsum reacts with sodium silicate to generate calcium silicate gel and sodium sulfate crystals, and the gaps of the calcium silicate gel are filled with the sodium sulfate crystals, so that the prepared bamboo high-strength gypsum is compact and high in strength.
The succinic acid is used as a crystal transferring agent, so that the alpha-type high-strength gypsum can be promoted to grow into compact and coarse crystals, when the alpha-type high-strength gypsum forms coarse short column crystals or cubic crystals, the specific surface area of the crystals is small, and the water demand of standard consistence is small, thereby improving the strength and compactness of the bamboo high-strength gypsum.
The sodium dodecyl sulfate is used as an emulsifier to play a role in emulsification and dispersion, so that the sodium dodecyl sulfate plays a role in promoting the reaction of sodium silicate and phosphogypsum and promoting the growth of alpha-type high-strength gypsum crystals by succinic acid.
The sodium methyl naphthalene sulfonate is used as a foam removing agent for removing foam in the preparation process of the bamboo high-strength gypsum. Sodium trimetaphosphate is used as a crystal stabilizer for stably growing the formed compact and coarse alpha-type high-strength gypsum crystals.
The bamboo high-strength gypsum disclosed by the application has the advantages that the phosphogypsum is taken as the main raw material, so that the waste utilization of the phosphogypsum is increased, the occupation of the phosphogypsum on land resources is reduced, and the damage of the phosphogypsum on environmental resources is reduced. The bamboo high-strength gypsum also takes alpha-strength gypsum, sodium dodecyl sulfate, sodium silicate, sodium methylnaphthalene sulfonate, succinic acid, sodium trimetaphosphate and water as raw materials, and the weight percentage of the phosphogypsum is 50-70%, the alpha-strength gypsum is 0-30%, the sodium dodecyl sulfate is 0-1%, the sodium silicate is 0-1%, the sodium methylnaphthalene sulfonate is 0-0.5%, the succinic acid is 0-0.05% and the sodium trimetaphosphate is 0-0.05%, and the ratio of the weight of the water to the total weight of the phosphogypsum, the alpha-strength gypsum and the sodium methylnaphthalene sulfonate is 0.4-0.8, so that the prepared bamboo high-strength gypsum has high strength and compactness. Because 0-30% of bamboo fiber is added into the raw materials of the bamboo high-strength gypsum, the prepared bamboo high-strength gypsum is light. Therefore, the bamboo high-strength gypsum has high strength, high compactness and light weight.
In order to prevent harmful substances such as soluble phosphide, fluoride, heavy metal, alkaline substances and the like in the prepared bamboo high-strength gypsum from penetrating into the natural world through contact with water, so as to pollute underground water resources and destroy ecological environment, the application further provides the bamboo high-strength gypsum with waterproof performance.
In an alternative embodiment, the bamboo high-strength gypsum further comprises raw materials of sodium methyl silicate and triethanolamine, wherein the raw materials comprise, by weight, 0-2% of sodium methyl silicate and 0-0.5% of triethanolamine.
Sodium methyl silicate and triethanolamine are excellent waterproof materials for improving the water stability of the bamboo high-strength gypsum, and preventing harmful substances in the bamboo high-strength gypsum, such as phosphorus, alkaline substances and the like, from contacting with water, so as to prevent the harmful substances from penetrating into the natural world through the water, thereby playing a role in protecting ecological environment.
In an alternative embodiment, the alpha-form high strength gypsum has a major component of alpha-calcium sulfate hemihydrate (CaSO 4 ·0.5H 2 O), the content of the alpha-calcium sulfate hemihydrate in the alpha-type high-strength gypsum is more than or equal to 90 percent by weight, the 2h flexural strength of the alpha-calcium sulfate hemihydrate is more than or equal to 5.0MPa, and the compressive strength of the alpha-calcium sulfate hemihydrate is more than or equal to 45MPa.
In this way, the strength and compactness of the bamboo high-strength gypsum are improved.
In an alternative embodiment, the erection of alpha-form high strength gypsumThe surface area is 100-340 m 2 /kg。
In an alternative embodiment, the alpha-form high strength gypsum has an initial set time of greater than 5 minutes and a final set time of less than 30 minutes.
The initial setting time of the alpha-type high-strength gypsum is longer than 5min, so that the alpha-type high-strength gypsum can be prevented from being quickly coagulated, and the succinic acid is beneficial to promoting the growth of alpha-type high-strength gypsum crystals. The final setting time of the alpha-type high-strength gypsum is less than 30 minutes, so that the overlong setting time can be prevented, and the bamboo high-strength gypsum can be quickly generated.
In an alternative embodiment, the bamboo fibers are natural bamboo fibers, and the average length of the bamboo fibers is less than 30mm.
The bamboo high-strength gypsum prepared by the method is lighter.
In an alternative embodiment, the bamboo high strength gypsum is formed using a compression molding process.
The bamboo high-strength gypsum is formed by adopting a compression forming process in a simple mode.
In an alternative embodiment, the pressure of the compression molding process is between 0.1 and 1.0MPa.
The bamboo high-strength gypsum prepared by the method has moderate density.
In an alternative embodiment, the curing temperature of the bamboo high strength gypsum is 25+ -2deg.C and the curing time is 7-10 days.
Referring to fig. 1, according to another aspect of the embodiment of the present application, there is provided a method for preparing bamboo gypsum, the method comprising:
s10: preparing phosphogypsum, alpha-type high-strength gypsum, bamboo fiber, sodium dodecyl sulfate, sodium silicate, sodium methylnaphthalene sulfonate, succinic acid, sodium trimetaphosphate and water, wherein the weight percentage of the phosphogypsum is 50-70%, the alpha-type high-strength gypsum is 0-30%, the bamboo fiber is 0-30%, the sodium dodecyl sulfate is 0-1%, the sodium silicate is 0-1%, the sodium methylnaphthalene sulfonate is 0-0.5%, the succinic acid is 0-0.05% and the sodium trimetaphosphate is 0-0.05%, and the ratio of the weight of the water to the total weight of the phosphogypsum, the alpha-type high-strength gypsum and the sodium methylnaphthalene sulfonate is 0.4-0.8;
s20: dispersing bamboo fibers;
s30: mixing phosphogypsum, alpha-type high-strength gypsum and bamboo fiber in a stirrer for 20-30 min, adding sodium methylnaphthalene sulfonate, and stirring for 5-10min to obtain a uniform mixture;
s40: adding a part of water into the mixture of sodium dodecyl sulfate, sodium silicate, succinic acid and sodium trimetaphosphate, heating the mixture added with water to 40-60 ℃, and cutting the mixture with a shearing machine at 2500-3500 r.min -1 Shearing the heated mixture at the rotating speed for 10-30 min to obtain uniform emulsion;
s50: adding the other part of the emulsion and water into the mixture, stirring for 5-10min to obtain a semi-finished product of the bamboo high-strength gypsum, and forming and curing the semi-finished product of the bamboo high-strength gypsum to form the bamboo high-strength gypsum.
The weight percentages of the components in examples 1-6 and the control are shown in Table 1:
TABLE 1
The test results of the bamboo high-strength gypsum prepared in examples 1 to 6 are shown in Table 2:
TABLE 2
In tables 1 and 2, it is understood that the addition of sodium silicate, alpha-type high strength gypsum and succinic acid greatly improved the strength and compactness of the bamboo high strength gypsum by comparing examples 1 and 2 with the control group. It is apparent from the comparison of examples 3 and 4 and examples 1 and 2 that the addition of the bamboo fibers has little influence on the strength and compactness of the bamboo high-strength gypsum, but the density of the bamboo high-strength gypsum is greatly reduced, that is, the bamboo high-strength gypsum is light. As can be seen from the comparison of examples 5 and 6 and examples 3 and 4, the addition of sodium methyl silicate and triethanolamine greatly improved the water resistance of the bamboo high strength gypsum.
It should be noted that unless otherwise indicated, technical or scientific terms used in the embodiments of the present application should be given the ordinary meanings as understood by those skilled in the art to which the embodiments of the present application belong.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. The bamboo high-strength gypsum is characterized by comprising the following raw materials: phosphogypsum, alpha-type high-strength gypsum, bamboo fiber, sodium dodecyl sulfate, sodium silicate, sodium methylnaphthalene sulfonate, succinic acid, sodium trimetaphosphate and water;
the phosphogypsum is 50-70% by weight, the alpha-type high-strength gypsum is 0-30% by weight, the bamboo fiber is 0-30% by weight, the sodium dodecyl sulfate is 0-1% by weight, the sodium silicate is 0-1% by weight, the sodium methylnaphthalene sulfonate is 0-0.5% by weight, the succinic acid is 0-0.05% by weight, and the sodium trimetaphosphate is 0-0.05% by weight;
the ratio of the weight of the water to the total weight of the phosphogypsum, the alpha-type high-strength gypsum and the sodium methylnaphthalene sulfonate is 0.4-0.8.
2. The bamboo high strength gypsum according to claim 1, further comprising the following raw materials: sodium methyl silicate and triethanolamine, wherein the weight percentage of the sodium methyl silicate is 0-2% and the weight percentage of the triethanolamine is 0-0.5%.
3. The bamboo high-strength gypsum according to claim 1, wherein the main component of the alpha-type high-strength gypsum is alpha-calcium sulfate hemihydrate, the content of the alpha-calcium sulfate hemihydrate in the alpha-type high-strength gypsum is greater than or equal to 90% by weight, the 2h flexural strength of the alpha-calcium sulfate hemihydrate is greater than or equal to 5.0MPa, and the compressive strength of the alpha-calcium sulfate hemihydrate is greater than or equal to 45MPa.
4. The bamboo high-strength gypsum according to claim 1, wherein the alpha-strength gypsum has a specific surface area of 100 to 340m 2 /kg。
5. The bamboo high-strength gypsum according to claim 1, wherein the alpha-form high-strength gypsum has an initial setting time of more than 5 minutes and a final setting time of less than 30 minutes.
6. The bamboo high strength gypsum according to claim 1, wherein the bamboo fibers are natural bamboo fibers having an average length of less than 30mm.
7. The bamboo high-strength gypsum according to claim 1, wherein the bamboo high-strength gypsum is formed by a compression molding process.
8. The bamboo high-strength gypsum according to claim 7, wherein the pressure of the press forming process is 0.1 to 1.0MPa.
9. The bamboo high-strength gypsum according to claim 7, wherein the curing temperature of the bamboo high-strength gypsum is 25±2 ℃ and the curing time is 7 to 10 days.
10. A method of making a bamboo high strength gypsum, the method comprising:
preparing phosphogypsum, alpha-high-strength gypsum, bamboo fiber, sodium dodecyl sulfate, sodium silicate, sodium methylnaphthalene sulfonate, succinic acid, sodium trimetaphosphate and water, wherein the ratio of the weight of the water to the total weight of the phosphogypsum, the alpha-high-strength gypsum and the sodium methylnaphthalene sulfonate is 0.4-0.8, and the weight of the phosphogypsum is 50-70%, the weight of the alpha-high-strength gypsum is 0-30%, the weight of the bamboo fiber is 0-30%, the weight of the sodium dodecyl sulfate is 0-1%, the weight of the sodium silicate is 0-1%, the weight of the sodium methylnaphthalene sulfonate is 0-0.5%, and the weight of the succinic acid is 0-0.05%;
dispersing the bamboo fibers;
placing the phosphogypsum, the alpha-type high-strength gypsum and the bamboo fiber in a stirrer, mixing and stirring for 20-30 min, adding the sodium methylnaphthalene sulfonate, and stirring for 5-10min to obtain a uniform mixture;
adding a part of the water to the mixture of the sodium dodecyl sulfate, the sodium silicate, the succinic acid and the sodium trimetaphosphate, heating the mixture added with the water to 40-60 ℃, and using a shearing machine to 2500-3500 r.min -1 Shearing the heated mixture at the rotating speed for 10-30 min to prepare uniform emulsion;
and adding the emulsion and the other part of the water into the mixture, and stirring for 5-10min to obtain a semi-finished product of the bamboo high-strength gypsum, wherein the semi-finished product of the bamboo high-strength gypsum is formed into the bamboo high-strength gypsum through molding and curing.
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