CN114853433A - Fluorgypsum composite cementing material and preparation method thereof - Google Patents
Fluorgypsum composite cementing material and preparation method thereof Download PDFInfo
- Publication number
- CN114853433A CN114853433A CN202210385645.6A CN202210385645A CN114853433A CN 114853433 A CN114853433 A CN 114853433A CN 202210385645 A CN202210385645 A CN 202210385645A CN 114853433 A CN114853433 A CN 114853433A
- Authority
- CN
- China
- Prior art keywords
- fluorgypsum
- powder
- composite
- cementing material
- rubber powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- C04B28/142—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 containing synthetic or waste calcium sulfate cements
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Abstract
The invention discloses a fluorgypsum composite cementing material and a preparation method thereof, wherein the fluorgypsum composite cementing material comprises the following components in parts by weight: 65-74% of fluorgypsum, 14-21% of slag powder, 5-12% of ordinary portland cement, 1-3% of alkaline material, 0.5-1.8% of activity excitant, 0.2-2% of redispersible latex powder and 0.1-1% of water retention thickener. According to the fluorgypsum composite cementing material and the preparation method thereof, the fluorgypsum is modified by adopting a proper additive and a certain process condition, so that the cementing property of the fluorgypsum is effectively improved, the mechanical strength of the fluorgypsum is enhanced, and a new way for comprehensively utilizing the fluorgypsum is widened.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a fluorgypsum composite cementing material and a preparation method thereof.
Background
The fluorgypsum is a byproduct in the hydrofluoric acid production process, industrial waste residue which is mainly calcium sulfate and is generated by the reaction of sulfuric acid and fluorite powder, 3.6 tons of anhydrous fluorgypsum are generated when 1 ton of hydrofluoric acid is produced, and the production reaction equation is as follows:
H 2 SO 4 +CaF 2 ＝2HF+CaSO 4
when the fluorgypsum is discharged from the reaction furnace, the material temperature is 180-.
The properties and the main component analysis of fluorgypsum are shown in the following table 1: the solid product of the reaction is gypsum (CaSO) 4 ) Because it contains a small amount of unreacted CaF 2 So it is also called fluorgypsum.
TABLE 1 composition of fluorgypsum (%)
| CaO | MgO | Fe 2 O 3 | Al 2 O 3 | SiO 2 | SO 3 | CaF 2 |
| 32-38 | 0.1-3 | 0.05-0.25 | 0.01-3.0 | 0.6-7.0 | 40-60 | 0.5-2.0 |
At present, most of fluorgypsum in China is only neutralized by lime or carbide slag and then is pumped into a slag yard for stockpiling or landfill, so that land resources are wasted, huge economic pressure is brought to enterprises, and under the action of rainwater leaching and wind power scouring, harmful substances remained in the fluorgypsum in the yard can be transferred to pollute the ground surface and underground water, and the human health is seriously harmed.
Although the content of the anhydrous gypsum in the fluorgypsum is more than 90 percent, the hydration speed is very slow, the generated dihydrate gypsum crystal has a large number of thermodynamically unstable crystal contact points, the water resistance is poor, and the softening coefficient is about 0.2 to 0.3. Researches show that under the action of a proper additive, the fluorgypsum can improve the solubility and the dissolution speed, change the chemical reaction kinetic property in the hydration reaction process, accelerate the hydration speed and shorten the setting time, thereby improving the performance of the fluorgypsum. Therefore, the fluorgypsum waste residue is modified and converted into gypsum building materials and the like for comprehensive utilization, so that the waste is changed into valuable, the environment is protected, energy and resources can be saved, and the national sustainable development strategy is met.
Disclosure of Invention
Based on the technical problems, the invention provides the fluorgypsum composite cementing material and the preparation method thereof, and the fluorgypsum is modified by adopting a proper additive and a certain process condition, so that the cementing property of the fluorgypsum is effectively improved, the mechanical strength of the fluorgypsum is enhanced, and a new way for comprehensively utilizing the fluorgypsum is widened.
The invention provides a fluorgypsum composite cementing material which comprises the following raw materials in percentage by weight: 65-74% of fluorgypsum, 14-21% of slag powder, 5-12% of ordinary portland cement, 1-3% of alkaline material, 0.5-1.8% of activity excitant, 0.2-2% of redispersible latex powder and 0.1-1% of water retention thickener.
In order to improve the hydration rate of the fluorgypsum, promote the fluorgypsum to be coagulated and improve the strength of the cementing material, the slag powder is fully hydrated in an alkaline environment, so that the later strength of the cementing material is improved; the ordinary Portland cement can keep the volume stability of the fluorogypsum base and improve the early strength of the composite cementing material; the alkaline material ensures the alkaline environment of the hydration of the fluorgypsum cementing material, ensures that the activator can improve the hydration rate of the fluorgypsum-based plastering material and shortens the setting time; the redispersible latex powder excites part of active substances in the composite cementing material to generate a hard mold with a net structure, so that the performances of the composite cementing material such as elastic modulus, water resistance, crack resistance, bonding strength and the like are improved; the water retention thickener can improve the water retention performance and the sagging performance of the fluorgypsum-based plastering material.
In the invention, the fluorgypsum, the slag powder, the ordinary portland cement, the alkaline material, the activity excitant, the redispersible latex powder, the water reducer and the water retention thickener are mutually matched and cooperatively play a role, so that the fluorgypsum-based plastering material has the advantages of short setting time, high strength, small stacking density, good volume stability, high bonding strength, excellent water retention property and the like.
Preferably, the fluorgypsum is dry powder obtained by grinding and crushing fluorgypsum discharged from hydrofluoric acid production;
the grinding and crushing function is to destroy crystal lattices, increase the lattice distortion and defects, increase the specific surface area and the irregularity of the surface structure, improve the hydration activity of the fluorgypsum and promote the hardening of the fluorgypsum.
Preferably, the fineness of the fluorgypsum is 150-350 meshes.
The hydration process of the fluorgypsum is carried out from outside to inside, so the hydration speed is slow, and the activity is very low: the anhydrite particles are refined by grinding and crushing, the specific surface area of the contact of the fluorgypsum and water is increased, the dissolving speed of the fluorgypsum is improved, and Ca in the slurry is enabled 2+ The dissolution rate is increased, thereby effectively exciting the activity of the fluorgypsum.
Preferably, the slag powder is blast furnace slag powder, and the slag alkalinity is 1.1-1.4.
The blast furnace slag powder with the slag alkalinity of 1.1-1.4 has more sufficient hydration reaction in an alkaline environment, can improve the grain composition of the composite cementing material, and leads the volume stability of the composite cementing material to be enhanced.
Preferably, the alkaline material is at least one of calcium oxide, calcium hydroxide or potassium hydroxide.
The alkaline material of calcium oxide, calcium hydroxide or potassium hydroxide effectively ensures the alkaline environment of the hydration of the fluorgypsum gel material.
Preferably, the activity activator is at least one of sodium sulfate, potassium sulfate, aluminum sulfate, potassium thioaluminate or thioaluminate.
The active excitant can generate unstable double salt (salt mCaSO) on the surface of the anhydrite 4 ·nH 2 O), the formation of the supersaturation degree of the fluorgypsum is accelerated, the crystallization activation energy is reduced, the crystallization is accelerated, and the hydration rate is obviously improved: the main transformation process is as follows:
mCaSO 4 + salt nH 2 O → salt mCaSO 4 ·4nH 2 O (double salt)
Salt mCaSO 4 ·4nH 2 O (double salt) → mCaSO 4 ·2H 2 O + salt (n-2m) H 2 O
The double salt is decomposed into dihydrate gypsum and hydrous salt in the presence of water and an exciting agent, and the dihydrate gypsum is continuously crystallized, so that the slurry forms a tightly interwoven crystal structure, and the setting time is shortened. The sulfate excitant can lead the system to generate a large amount of acicular ettringite (CSH) gel which is crossed and coexisted with a crystal structure net which takes gypsum as a main component, and when the system is filled in gaps of gypsum crystals, a tightly interwoven crystal structure is formed, so that the water resistance and the strength of the fluorgypsum product are greatly improved.
Preferably, the redispersible latex powder is ethylene-vinyl acetate copolymer rubber powder, acrylic acid rubber powder, styrene-butadiene rubber powder, polyvinyl alcohol rubber powder or grafted SiO 2 At least one of the polyvinyl acetate rubber powder of (a);
preferably, the redispersible latex powder is grafted SiO 2 The polyvinyl acetate rubber powder.
The redispersible latex powder is emulsified and dispersed in water, and after water is evaporated, a polymer film is formed in the mixing material, so that various performances of the cementing material are improved; in the re-dispersible latex powder selected by the invention, SiO is grafted 2 The surface of the polyvinyl acetate rubber powder is grafted with SiO 2 ，SiO 2 The hydration property of the rubber powder enables the rubber powder to have excellent water dispersion performance, so that the rubber powder can more effectively fill among fluorgypsum hydration particles after emulsification and dispersion, and a mutually cross-linked three-dimensional network structure is formed in the interior, so that fluorgypsum slurry particles are more tightly bonded together, and the flexural strength performance of the obtained composite cementing material is further improved.
Preferably, the grafted SiO 2 The polyvinyl acetate rubber powder is prepared by mixing KH570 modified SiO 2 And a monomer containing acetic acid vinyl ester is polymerized under the conditions of an initiator and a dispersant.
Preferably, the water-retaining thickener is at least one of methyl cellulose, ethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose or starch ether.
The high molecular polymer water-retaining agent is usually in a three-dimensional network structure, and hydrophilic groups of the high molecular polymer water-retaining agent can form hydrogen bonds with water molecules when the high molecular polymer water-retaining agent is contacted with water, so that the water evaporation of the fluorgypsum composite cementing material can be effectively solved, the cohesiveness and the uniformity of the gypsum material are improved, and the problems of cracking, hollowing and the like are avoided.
The invention also provides a preparation method of the fluorgypsum composite cementing material, which comprises the following steps: adding fluorgypsum into grinding equipment, adding slag powder and ordinary portland cement, and grinding uniformly to obtain modified fluorgypsum; and adding the modified fluorgypsum, the alkaline material, the activity excitant, the redispersible emulsion powder and the water-retention thickener into stirring equipment, and uniformly stirring to obtain the fluorgypsum composite cementing material.
Preferably, the grinding device is a Raymond mill.
Compared with the prior art, the invention has the following beneficial effects:
(1) in the fluorgypsum composite cementing material, the raw material components play a synergistic role, so that the fluorgypsum composite cementing material has the advantages of short setting time, high strength, small bulk density, good volume stability, bonding strength and the like;
(2) in the fluorgypsum composite cementing material, the raw material components are reasonably proportioned, so that the optimal modification effect is promoted, the hydration rate of the fluorgypsum composite cementing material is improved, the setting time is shortened, and the compression strength and the breaking strength are improved;
(3) the preparation method of the fluorgypsum composite cementing material is simple, does not need operations such as calcination and the like, is suitable for large-scale commercial production, simultaneously takes the fluorgypsum as a main raw material, realizes resource utilization of solid waste, avoids pollution of the waste fluorgypsum to the environment, and has wide application prospect in the fields of building material preparation, waste resource utilization and environmental protection.
Detailed Description
The present invention will be described in detail with reference to specific examples, but these examples should be explicitly mentioned for illustration, but should not be construed as limiting the scope of the present invention.
Example 1
A fluorgypsum composite cementing material comprises the following components in percentage by weight: 68.6 percent of fluorgypsum, 18.4 percent of slag powder, 8.2 percent of P.042.5 ordinary portland cement, 2.3 percent of calcium oxide, 1.1 percent of potassium sulphoaluminate, 0.9 percent of ethylene-vinyl acetate copolymer rubber powder and 0.5 percent of hydroxypropyl methyl cellulose;
the fluorgypsum is dry powder obtained by grinding and crushing fluorgypsum discharged from hydrofluoric acid production, and the fineness of the fluorgypsum is 200 meshes; the slag powder is blast furnace slag powder, and the slag alkalinity is 1.32.
The method for preparing the fluorgypsum composite cementing material specifically comprises the following steps: adding the fluorgypsum into a Raymond mill, adding the slag powder and ordinary portland cement P.042.5, and uniformly grinding to obtain modified fluorgypsum; and adding the modified fluorgypsum, calcium oxide, potassium sulphoaluminate, ethylene-vinyl acetate copolymer rubber powder and hydroxypropyl methyl cellulose into stirring equipment, and uniformly stirring to obtain the fluorgypsum composite cementing material.
Example 2
A fluorgypsum composite cementing material comprises the following components in percentage by weight: 65.4 percent of fluorgypsum, 20.7 percent of slag powder, 7.9 percent of P.042.5 ordinary portland cement, 3.0 percent of calcium hydroxide, 1.0 percent of potassium sulfate, 1.8 percent of butadiene-styrene rubber powder and 0.2 percent of starch ether;
the fluorgypsum is dry powder obtained by grinding and crushing fluorgypsum discharged from hydrofluoric acid production, and the fineness of the fluorgypsum is 200 meshes.
The method for preparing the fluorgypsum composite cementing material specifically comprises the following steps: adding the fluorgypsum into a Raymond mill, adding the slag powder and the ordinary portland cement, and uniformly grinding to obtain modified fluorgypsum; and adding the modified fluorgypsum, calcium hydroxide, potassium sulfate, butadiene styrene rubber powder and starch ether into stirring equipment, and uniformly stirring to obtain the fluorgypsum composite cementing material.
Example 3
A fluorgypsum composite cementing material comprises the following components in percentage by weight: 73.4 percent of fluorgypsum, 14.1 percent of slag powder, 8.8 percent of P.042.5 ordinary portland cement, 1.2 percent of calcium oxide, 1.6 percent of aluminum sulfate, 0.2 percent of polyvinyl alcohol rubber powder and 0.7 percent of hydroxyethyl cellulose;
the fluorgypsum is dry powder obtained by grinding and crushing fluorgypsum discharged from hydrofluoric acid production, and the fineness of the fluorgypsum is 200 meshes; the slag powder is blast furnace slag powder, and the slag alkalinity is 1.32.
The method for preparing the fluorgypsum composite cementing material specifically comprises the following steps: adding the fluorgypsum into a Raymond mill, adding the slag powder and the ordinary portland cement, and uniformly grinding to obtain modified fluorgypsum; and adding the modified fluorgypsum, calcium oxide, aluminum sulfate, polyvinyl alcohol rubber powder and hydroxyethyl cellulose into stirring equipment, and uniformly stirring to obtain the fluorgypsum composite cementing material.
Example 4
A fluorgypsum composite cementing material comprises the following components in percentage by weight: 68.6 percent of fluorgypsum, 18.4 percent of slag powder, 8.2 percent of P.042.5 ordinary portland cement, 2.3 percent of calcium oxide, 1.1 percent of potassium sulphoaluminate and grafted SiO 2 0.9 percent of polyvinyl acetate rubber powder and 0.5 percent of water-retaining thickener;
the fluorgypsum is dry powder obtained by grinding and crushing fluorgypsum discharged from hydrofluoric acid production, and the fineness of the fluorgypsum is 200 meshes; the slag powder is blast furnace slag powder, and the slag alkalinity is 1.32; the grafted SiO 2 The polyvinyl acetate rubber powder is prepared by the following method:
KH570 and nano SiO are mixed according to the weight ratio of 1:4 2 Adding ethanol-water mixed solvent, performing ultrasonic treatment under acidic condition (pH 4) for 15min to obtain KH 570-modified SiO 2 (ii) a Then modifying KH570 with SiO according to the weight ratio of 1:9:2:0.05:0.01 2 Vinyl acetate, vinyl versatate and sodium dodecylbenzenesulfonate (emulsifier)Adding potassium persulfate (initiator) into water, intensively stirring and mixing uniformly in a polymerization kettle, carrying out polymerization reaction for 6 hours at 50 ℃, continuously curing for 2 hours, and carrying out spray drying on the obtained copolymer emulsion to obtain the grafted SiO 2 The polyvinyl acetate rubber powder.
The method for preparing the fluorgypsum composite cementing material specifically comprises the following steps: adding the fluorgypsum into a Raymond mill, adding the slag powder and ordinary portland cement P.042.5, and uniformly grinding to obtain modified fluorgypsum; mixing the modified fluorgypsum with calcium oxide, potassium sulphoaluminate and grafted SiO 2 Adding the polyvinyl acetate rubber powder and the hydroxypropyl methyl cellulose into stirring equipment, and uniformly stirring to obtain the fluorgypsum composite cementing material.
Comparative example 1
A fluorgypsum composite cementing material comprises the following components in percentage by weight: 68.6 percent of fluorgypsum, 18.4 percent of slag powder, 8.2 percent of P.042.5 ordinary portland cement, 2.3 percent of calcium oxide, 1.1 percent of potassium sulphoaluminate, 0.9 percent of polyvinyl acetate rubber powder and 0.5 percent of water-retaining thickener;
the fluorgypsum is dry powder obtained by grinding and crushing fluorgypsum discharged from hydrofluoric acid production, the fineness of the fluorgypsum is 200 meshes, the slag powder is blast furnace slag powder, the slag alkalinity is 1.32, and the polyvinyl acetate rubber powder is prepared by adopting the following method:
adding vinyl acetate, vinyl versatate, sodium dodecyl benzene sulfonate (emulsifier) and potassium persulfate (initiator) into water according to the weight ratio of 9:2:0.05:0.01, intensively stirring and uniformly mixing in a polymerization kettle, carrying out polymerization reaction at 50 ℃ for 6 hours, continuing curing for 2 hours, and carrying out spray drying on the obtained copolymer emulsion to obtain the polyvinyl acetate rubber powder.
The method for preparing the fluorgypsum composite cementing material specifically comprises the following steps: adding the fluorgypsum into a Raymond mill, adding the slag powder and ordinary portland cement P.042.5, and uniformly grinding to obtain modified fluorgypsum; adding the modified fluorgypsum, calcium oxide, potassium sulphoaluminate, polyvinyl acetate rubber powder and hydroxypropyl methyl cellulose into stirring equipment, and uniformly stirring to obtain the fluorgypsum composite cementing material.
And (3) experimental test:
in order to verify the technical performance of the fluorgypsum composite cementing material described in the above examples and comparative examples, the fluorgypsum composite cementing material is uniformly stirred with a water-to-cement ratio of 0.35, the obtained slurry is molded, the obtained test block is cured at (20 +/-2) DEG C and a relative humidity of 50-60%, the flexural strength and compressive strength of the test block at different ages are tested, the average value is obtained, the result is shown in Table 1, and the strength is measured according to GB/T17671-1999 Cement mortar Strength test method (ISO method):
table 1 results of technical performance test of products obtained in examples and comparative examples
| Example 1 | Example 2 | Example 3 | Example 4 | Comparative example 1 | |
| Initial setting time (min) | 1h32min | 1h28min | 1h25min | 1h58min | 1h16min |
| Final setting time (min) | 3h41min | 3h27min | 3h49min | 2h43min | 4h17min |
| 24h breaking strength (MPa) | 1.9 | 1.7 | 1.6 | 2.7 | 1.2 |
| Compressive strength 24h (MPa) | 5.4 | 7.1 | 6.4 | 10.5 | 4.5 |
| 7d breaking strength (MPa) | 7.8 | 8.5 | 6.9 | 9.3 | 5.8 |
| 7d compressive Strength (MPa) | 45.3 | 40.4 | 48.2 | 54.2 | 32.9 |
| Tensile bond Strength (MPa) | 1.0 | 0.9 | 0.8 | 1.2 | 0.6 |
As can be seen from the above table, the fluorgypsum composite cementing material has good physical properties, high flexural strength, high compressive strength, high tensile bonding strength and good construction performance.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The fluorgypsum composite cementing material is characterized by comprising the following raw materials in percentage by weight: 65-74% of fluorgypsum, 14-21% of slag powder, 5-12% of ordinary portland cement, 1-3% of alkaline material, 0.5-1.8% of activity excitant, 0.2-2% of redispersible latex powder and 0.1-1% of water retention thickener.
2. The fluorgypsum composite cementing material of claim 1, wherein the fluorgypsum is dry powder obtained by grinding and crushing fluorgypsum discharged from hydrofluoric acid production;
preferably, the fineness of the fluorgypsum is 150-350 meshes.
3. The fluorogypsum composite cementitious material according to claim 1 or 2, characterized in that the slag powder is blast furnace slag powder and the slag basicity is 1.1-1.4.
4. The fluorogypsum composite cementitious material of any one of claims 1 to 3, wherein said alkaline material is at least one of calcium oxide, calcium hydroxide or potassium hydroxide.
5. The fluorogypsum composite cementitious material according to any one of claims 1 to 4, wherein said activity excitant is at least one of sodium sulfate, potassium sulfate, aluminum sulfate, potassium thioaluminate or thioaluminate.
6. The fluorgypsum composite cementing material of any one of claims 1 to 5, wherein the redispersible latex powder is ethylene-vinyl acetate copolymer rubber powder, acrylic acid rubber powder, styrene-butadiene rubber powder, polyvinyl alcohol rubber powder or grafted SiO 2 At least one of the polyvinyl acetate rubber powder of (a);
preferably, the redispersible latex powder is grafted SiO 2 The polyvinyl acetate rubber powder.
7. The fluorogypsum composite cementitious material of claim 6, wherein said grafted SiO 2 The polyvinyl acetate rubber powder is SiO modified by KH570 2 And a monomer containing acetic acid vinyl ester is polymerized under the conditions of an initiator and a dispersant.
8. The fluorogypsum composite cementitious material of any one of claims 1 to 7, wherein said water retention thickener is at least one of methyl cellulose, ethyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose, carboxymethyl cellulose or starch ether.
9. A method of preparing a fluorogypsum composite cementitious material according to any one of claims 1 to 8, comprising: adding fluorgypsum into grinding equipment, adding slag powder and ordinary portland cement, and grinding uniformly to obtain modified fluorgypsum; and adding the modified fluorgypsum, the alkaline material, the activity excitant, the redispersible emulsion powder and the water-retention thickener into stirring equipment, and uniformly stirring to obtain the fluorgypsum composite cementing material.
10. The method for preparing the fluorgypsum composite cementitious material according to claim 9, characterized in that the grinding device is a Raymond mill.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210385645.6A CN114853433B (en) | 2022-04-13 | 2022-04-13 | Fluorine gypsum composite cementing material and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210385645.6A CN114853433B (en) | 2022-04-13 | 2022-04-13 | Fluorine gypsum composite cementing material and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114853433A true CN114853433A (en) | 2022-08-05 |
| CN114853433B CN114853433B (en) | 2023-04-25 |
Family
ID=82630484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210385645.6A Active CN114853433B (en) | 2022-04-13 | 2022-04-13 | Fluorine gypsum composite cementing material and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114853433B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116730693A (en) * | 2023-04-10 | 2023-09-12 | 东南大学 | Low-shrinkage high-adhesion alkali slag cement-based repair material and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584156A (en) * | 2012-01-16 | 2012-07-18 | 上海英硕聚合材料股份有限公司 | Fluorgypsum based inorganic thermal mortar |
| CN107473685A (en) * | 2016-12-19 | 2017-12-15 | 湖南昌迅科技环保股份有限公司 | A kind of fluorite cream base plastering material for inner wall and its production technology |
| AU2020101223A4 (en) * | 2020-07-02 | 2020-08-06 | Qian'an Weisheng Solid Waste Environmental Protection Industry Co., Ltd | A Method for Preparing Cementitious material with all solid wasteContaining Refining Slag |
| CN112250405A (en) * | 2020-10-15 | 2021-01-22 | 江苏一夫科技股份有限公司 | Fluorgypsum-based plastering material and preparation method and application thereof |
-
2022
- 2022-04-13 CN CN202210385645.6A patent/CN114853433B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102584156A (en) * | 2012-01-16 | 2012-07-18 | 上海英硕聚合材料股份有限公司 | Fluorgypsum based inorganic thermal mortar |
| CN107473685A (en) * | 2016-12-19 | 2017-12-15 | 湖南昌迅科技环保股份有限公司 | A kind of fluorite cream base plastering material for inner wall and its production technology |
| AU2020101223A4 (en) * | 2020-07-02 | 2020-08-06 | Qian'an Weisheng Solid Waste Environmental Protection Industry Co., Ltd | A Method for Preparing Cementitious material with all solid wasteContaining Refining Slag |
| CN112250405A (en) * | 2020-10-15 | 2021-01-22 | 江苏一夫科技股份有限公司 | Fluorgypsum-based plastering material and preparation method and application thereof |
Non-Patent Citations (1)
| Title |
|---|
| 谢建海等: "氟石膏复合胶凝材料的性能研究", 《硅酸盐通报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116730693A (en) * | 2023-04-10 | 2023-09-12 | 东南大学 | Low-shrinkage high-adhesion alkali slag cement-based repair material and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114853433B (en) | 2023-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103113077B (en) | Desulfurization gypsum concrete | |
| CN112341123B (en) | Seawater corrosion resistant ceramic tile adhesive and production method thereof | |
| CN108383471B (en) | Method for preparing grouting material by using water-containing red mud and blast furnace slag | |
| CN105174783B (en) | A kind of Xu puts type poly carboxylic acid series water reducer and its preparation method and application | |
| KR101809485B1 (en) | Ultra rapid harding,high early strength waterproof and mothproof mortar composition | |
| DE102011078531A1 (en) | Gypsum-containing building materials | |
| CN102936115B (en) | Production method of cement-based grouting material | |
| CN104355588A (en) | Special adhesive gypsum for autoclaved aerated concrete product | |
| CN113979666B (en) | Double-doped wet-mixed mortar additive | |
| US20200207670A1 (en) | Hybrid foam | |
| CN115819048B (en) | Aged steel slag aggregate imitated marble base material and preparation method thereof | |
| CN111377649A (en) | Low-sulfur polyaluminum type alkali-free accelerator and preparation method thereof | |
| WO2021180309A1 (en) | Processes for producing foamed concrete | |
| CN112209651A (en) | Concrete accelerator and preparation method thereof | |
| CN114671644B (en) | High-early-strength low-resilience high-performance sprayed concrete and preparation method thereof | |
| CN114853433B (en) | Fluorine gypsum composite cementing material and preparation method thereof | |
| CN109734352B (en) | Super-retarding self-setting mortar reinforcing additive and preparation method thereof | |
| CN109608148B (en) | Rigid-elastic nano powder synergistic reinforced and toughened grouting material and preparation method and application thereof | |
| CN111116156B (en) | Low-damage high-strength aerated concrete block and preparation method thereof | |
| CN115403341B (en) | Inorganic waterproof plugging material and preparation method thereof | |
| CN105271983A (en) | Modified stone flour dry mixed mortar and preparation method thereof | |
| CN113233850B (en) | Modified concrete and preparation method thereof | |
| CN112094367B (en) | Bleeding-preventing polymer, low-retraction filling solid waste material, preparation method and application | |
| CN114213080A (en) | Recycled concrete | |
| CN109265624B (en) | Preparation method of concrete reinforcing agent |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |