CN112125598A - Preparation method of autoclaved aerated concrete based on titanium gypsum base - Google Patents
Preparation method of autoclaved aerated concrete based on titanium gypsum base Download PDFInfo
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- CN112125598A CN112125598A CN202010847860.4A CN202010847860A CN112125598A CN 112125598 A CN112125598 A CN 112125598A CN 202010847860 A CN202010847860 A CN 202010847860A CN 112125598 A CN112125598 A CN 112125598A
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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
- C04B28/02—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 hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
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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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/024—Steam hardening, e.g. in an autoclave
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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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/40—Porous or lightweight materials
-
- 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
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to the field of solid waste recycling treatment, and particularly relates to a preparation method of titanium gypsum-based autoclaved aerated concrete. The method adopts titanium gypsum without any pretreatment, saves cost, is convenient to treat and simple to operate, the proportion of the titanium gypsum in the prepared original-state titanium gypsum autoclaved aerated concrete is large, the prepared autoclaved aerated concrete can reach the national standard, can be applied to actual engineering production in a large amount, can well solve the problem of environmental pollution caused by titanium gypsum accumulation, creates actual economic value, and realizes high-valued application of solid waste.
Description
Technical Field
The invention belongs to the field of solid waste recycling treatment, and particularly relates to a preparation method of titanium gypsum-based autoclaved aerated concrete.
Background
Along with the rapid development of economy, urbanization is continuously promoted, people have more and more demands on materials for better building cities, and natural materials are greatly consumed. With the increasing awareness of environmental protection, more and more people are calling for the reduction of the use of natural materials and the increase of research on industrial wastes, and the wastes are applied to construction engineering instead of natural materials by certain means.
Titanium dioxide is a material with wider application range and has great demand in the industries of paint, cosmetics, paper making and the like. Titanium gypsum is a by-product in the sulfuric acid method for preparing titanium dioxide, a large amount of lime is added for neutralizing acid waste liquid in the production chain of the titanium dioxide, and the dihydrate gypsum generated at the time is called titanium gypsum. Because no better method for treating the titanium gypsum exists, most of the titanium gypsum cannot be effectively utilized, and the titanium gypsum waste is randomly piled. A large amount of titanium gypsum is accumulated, so that not only is waste caused to land resources, but also impurities in the titanium gypsum can cause great pollution to underground water and land through rainwater washing.
The titanium gypsum contains more impurities, and mainly contains iron, aluminum, magnesium, titanium and other parts of the titanium gypsum which contain more heavy metal ions. The presence of these impurities in large quantities results in a considerable reduction in the strength of the cement when titanium gypsum is used as a retarder instead of natural gypsum or when the raw material is added to the cement. The titanium gypsum is used as a filling material of a roadbed material, a part of the titanium gypsum can be used, but the using amount is limited, the current situation that a large amount of titanium gypsum is accumulated cannot be solved, and the titanium gypsum is used as a solid waste resource, so that the simple filling treatment causes resource waste and does not meet the high-value goal of the solid waste treatment at the current stage.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a preparation method of autoclaved aerated concrete based on a titanium gypsum base.
In order to solve the problems of the prior art, the invention adopts the following technical scheme:
a preparation method of autoclaved aerated concrete based on titanium gypsum comprises the following steps:
step 1, weighing the following components by mass: 1300g of undisturbed titanium gypsum, 343-one, 1000g of fly ash, 100-one, 200g of lime, 100-one, 200g of cementing material, 1-20g of alkali activator, 1-2g of water reducing agent, 1-15g of foaming agent and 800g of water-one;
step 2, pouring an alkali activator and water into a glass beaker, and fully stirring to obtain a mixed solution A;
step 3, pouring the undisturbed titanium gypsum, the cementing material and the lime into a stirring pot, stirring for 90s at the speed of 61 +/-5 r/min, scraping slurry of the blades and the pot wall into the middle of the pot, and adding a water reducing agent to obtain a mixture B;
step 5, adding a foaming agent into the mixture C, slowly stirring for 15s at a stirring speed of 61 +/-5 r/min, switching to fast stirring at a stirring speed of 131 +/-10 r/min, stirring for 30s, filling a mold, then transferring into a 70 ℃ moisture curing box for curing for 24h, and removing the mold to obtain an autoclaved sample D;
and 6, putting the non-autoclaved sample D into an autoclave, autoclaving at the temperature of 120 ℃ and 300 ℃ and under the pressure of 1-3MPa for 6-24h, taking out, and drying to obtain a finished product.
The improvement is that the undisturbed titanium gypsum has a solid content of over 75 percent and a viscosity of 3000-6000 Pa.S.
The improvement is that the alkali activator is one or more of sodium sulfate, sodium silicate, sodium carbonate, sodium bicarbonate, sodium hydroxide or water.
The improvement is that the cementing material is one or a mixture of more of portland cement, fly ash and metakaolin.
The improvement is that the working temperature of the autoclave in the step 6 is 200 ℃, and the steam pressure is 2 MPa.
Has the advantages that:
compared with the prior art, the preparation method of the autoclaved aerated concrete based on the titanium gypsum base has the following advantages:
1. the undisturbed titanium gypsum autoclaved aerated concrete prepared by the invention does not need to pretreat the titanium gypsum, avoids the problems of cost and secondary pollution required by titanium gypsum treatment, saves the manufacturing cost and protects the environment.
2. The undisturbed titanium gypsum autoclaved aerated concrete prepared by the invention uses 50% of undisturbed titanium gypsum as a raw material at most, and the strength of the prepared undisturbed titanium gypsum autoclaved aerated concrete still exceeds the national standard, so that the undisturbed titanium gypsum autoclaved aerated concrete has practical use value. The undisturbed titanium gypsum which consumes 50 percent at most makes a positive contribution to the elimination of solid wastes and the protection of the environment;
3. according to the invention, titanium gypsum which is difficult to treat at present is prepared into the original-state titanium gypsum autoclaved aerated concrete in a large scale (30-50%), the strength is excellent, part of fly ash autoclaved aerated concrete can be replaced, the actual value is created, the raw material source of the autoclaved aerated concrete is widened, and the high-value utilization of solid waste is realized.
Drawings
FIG. 1 is an SEM image of undisturbed titanium gypsum autoclaved aerated concrete;
FIG. 2 is an SEM image of fly ash autoclaved aerated concrete.
Detailed Description
The present invention will be described in further detail with reference to the following embodiments. It will be understood by those skilled in the art that the following examples are illustrative of the present invention only and should not be taken as limiting the scope of the invention. The specific techniques or conditions are not indicated in the examples, and the techniques or conditions described in the literature in the art are performed in accordance with the instructions. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products commercially available.
Example 1
An autoclaved aerated concrete based on a titanium gypsum base is prepared by weighing the following components in parts by mass:
undisturbed titanium gypsum 343g
500g of fly ash
Lime 200g
Cementitious Material 100g
Water reducing agent 1g
Alkali activator 4g
Blowing agent 4g
400g of water
Wherein the solid content of the undisturbed titanium gypsum is over 75 percent, and the viscosity range is 3000-6000 Pa.S.
Wherein the alkali activator is one or more of sodium sulfate, sodium silicate, sodium carbonate, sodium bicarbonate and sodium hydroxide.
Wherein the cementing material is one or a mixture of more of portland cement, fly ash and metakaolin.
Wherein the foaming agent is one or a mixture of aluminum powder and hydrogen peroxide.
The preparation method of the titanium gypsum-based autoclaved aerated concrete comprises the following steps:
weighing 343g of undisturbed titanium gypsum, 500g of fly ash, 100g of cementing material and 200g of lime for later use;
pouring 4g of alkali activator into a beaker, adding 400g of water, and fully stirring to prepare a mixed alkali activator;
pouring 343g of undisturbed titanium gypsum, 500g of fly ash, 200g of lime and 100g of cementing material into a stirring pot, stirring at a low speed of 56r/min for 90s, and scraping slurry of blades and the pot wall into the pot after stirring is stopped;
adding 1g of water reducing agent, pouring 4g of prepared mixed alkali activator into the stirred powder, and slowly stirring for 90s at the speed of 56 r/min;
and finally, adding 4g of aluminum powder into a stirring pot, slowly stirring for 15s at a speed of 56r/min, quickly stirring for 30s at a speed of 121r/min, filling the mixture into a 70 ℃ moisture curing box, curing for 24h, removing the mold, putting the mixture into an autoclave, controlling the autoclave temperature to be 120 ℃, the autoclave pressure to be 1MPa and the autoclave time to be 6h, and taking out and drying to obtain a finished product.
Example 2
An autoclaved aerated concrete based on a titanium gypsum base is prepared by weighing the following components in parts by mass:
weighing the following components in parts by mass:
undisturbed titanium gypsum 700g
750g of fly ash
Lime 150g
Cementitious Material 150g
Water reducing agent 1.5g
Alkali activator 14g
Blowing agent 7g
600g of water
Wherein the solid content of the undisturbed titanium gypsum is over 75 percent, and the viscosity range is 3000-6000 Pa.S.
Wherein the alkali activator is one or more of sodium sulfate, sodium silicate, sodium carbonate, sodium bicarbonate and sodium hydroxide.
Wherein the cementing material is one or a mixture of more of portland cement, fly ash and metakaolin.
Wherein the foaming agent is one or a mixture of aluminum powder and hydrogen peroxide.
The preparation method of the titanium gypsum-based autoclaved aerated concrete comprises the following steps:
weighing 700g of undisturbed titanium gypsum, 500g of fly ash, 100g of cementing material and 200g of lime for later use;
pouring 14g of alkali activator into a beaker, adding 600g of water, and fully stirring to prepare a mixed alkali activator;
pouring 700g of undisturbed titanium gypsum, 750g of fly ash, 150g of lime and 150g of cementing material into a stirring pot, slowly stirring for 90s at the speed of 61r/min, and scraping slurry of blades and the pot wall into the pot after stirring is stopped;
adding 1.5g of water reducing agent, pouring the prepared mixed alkali activator into the stirred powder, and then slowly stirring for 90 s;
and finally, adding 7g of foaming agent into a stirring pot, slowly stirring for 15s at a speed of 61r/min, quickly stirring for 30s at a speed of 131r/min, filling the mould into a 70 ℃ moisture curing box, curing for 24h, removing the mould, putting the mould into an autoclave, controlling the autoclave temperature to be 200 ℃, the autoclave pressure to be 2MPa and the autoclave time to be 15h, taking out and drying to obtain a finished product.
Example 3
An autoclaved aerated concrete based on a titanium gypsum base is prepared by weighing the following components in parts by mass:
original titanium gypsum 1300g
1000g of fly ash
Lime 100g
Gelled material 200g
Water reducing agent 2g
Alkali activator 20g
Blowing agent 15g
800g of water
Wherein the solid content of the undisturbed titanium gypsum is over 75 percent, and the viscosity range is 3000-6000 Pa.S.
Wherein the alkali activator is one or more of sodium sulfate, sodium silicate, sodium carbonate, sodium bicarbonate and sodium hydroxide.
Wherein the cementing material is one or a mixture of more of portland cement, fly ash and metakaolin.
Wherein the foaming agent is one or a mixture of aluminum powder and hydrogen peroxide.
The preparation method of the titanium gypsum-based autoclaved aerated concrete comprises the following steps:
1300g of undisturbed titanium gypsum, 1000g of fly ash, 200g of cementing material and 100g of lime are weighed for later use;
pouring 20g of alkali activator into a beaker, adding 800g of water, and fully stirring to prepare a mixed alkali activator;
pouring 1300g of undisturbed titanium gypsum, 1000g of fly ash, 100g of lime and 200g of cementing material into a stirring pot, slowly stirring for 90s at 66r/min, and scraping slurry of blades and the pot wall into the pot after stirring is stopped;
adding 2g of water reducing agent, pouring the prepared mixed alkali activator into the stirred powder, and then slowly stirring for 90s at 66 r/min;
and finally, adding 15g of foaming agent into a stirring pot, slowly stirring for 15s at 66r/min, quickly stirring for 30s at 141r/min, filling the mould into a 70 ℃ moisture curing box, curing for 24h, removing the mould, putting the mould into an autoclave, controlling the autoclave temperature to be 300 ℃, the autoclave pressure to be 3MPa and the autoclave time to be 24h, taking out and drying to obtain a finished product.
Mechanical property detection is carried out according to the national standard of autoclaved aerated concrete performance test method (GB/T11969-one 2008), a mold of a standard cubic test piece with the side length of 100mm is adopted, titanium gypsum-based autoclaved aerated concrete prepared according to the formula is placed into the mold, the whole mold is uniformly filled with the concrete, the titanium gypsum-based autoclaved aerated concrete is placed into a steam curing box for curing for 24 hours, the titanium gypsum-based autoclaved aerated concrete is placed into a drying box for drying after being demoulded, and then the titanium gypsum-based autoclaved aerated concrete is subjected to strength test.
Compressive strength of undisturbed titanium gypsum-based autoclaved aerated concrete test block with different density grades
Note: number 1 in the table is a product prepared according to the formulation of example 1,
number 2 in the table is the product prepared for the formulation of example 2;
number 3 in the table is the product prepared for the formulation of example 3.
The invention relates to a preparation method of autoclaved aerated concrete based on titanium gypsum, which breakthroughly uses undisturbed titanium gypsum as a raw material, omits the step of treating the titanium gypsum, saves the cost and plays a positive role in environmental protection. The prepared undisturbed titanium gypsum autoclaved aerated concrete exceeds the national standard on the levels of B06, B07 and B08 and far exceeds the fly ash autoclaved aerated concrete of the same grade.
As can be seen from FIG. 1, the undisturbed titanium gypsum autoclaved aerated concrete mainly comprises C-S-H gel, tobermorite, sulfenyl tobermorite and anhydrite, wherein the matrix is relatively complete, and the strength is ensured by staggered distribution of the C-S-H gel, the tobermorite, the sulfenyl tobermorite and the anhydrite. Compared with a scanned graph of fly ash, the microstructure of the undisturbed titanium gypsum autoclaved aerated concrete is more diversified, and the compactness of the matrix is more excellent. In the embodiment 3 prepared by the invention, 50% of the raw materials are the undisturbed titanium gypsum, the compressive strength of the prepared sample is as high as 8.2MPa, which exceeds the national standard of 0.7MPa, and the development of strength is ensured while the large mixing amount is ensured.
The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and any simple modifications or equivalent substitutions of the technical solutions that can be obviously obtained by those skilled in the art within the technical scope of the present invention are within the scope of the present invention.
Claims (6)
1. The preparation method of the autoclaved aerated concrete based on the titanium gypsum base is characterized by comprising the following steps:
step 1, weighing the following components by mass: 1300g of undisturbed titanium gypsum, 343-one, 1000g of fly ash, 100-one, 200g of lime, 100-one, 200g of cementing material, 1-20g of alkali activator, 1-2g of water reducing agent, 1-15g of foaming agent and 800g of water-one;
step 2, pouring an alkali activator and water into a glass beaker, and fully stirring to obtain a mixed solution A;
step 3, pouring the undisturbed titanium gypsum, the cementing material and the lime into a stirring pot, stirring for 90s at the speed of 61 +/-5 r/min, scraping slurry of the blades and the pot wall into the middle of the pot, and adding a water reducing agent to obtain a mixture B;
step 4, adding the mixed solution A into the mixture B, and stirring for 90s at the speed of 61 +/-5 r/min to obtain a mixture C;
step 5, adding a foaming agent into the mixture C, slowly stirring for 15s at a stirring speed of 61 +/-5 r/min, switching to fast stirring at a stirring speed of 131 +/-10 r/min, stirring for 30s, filling a mold, then transferring into a 70 ℃ moisture curing box for curing for 24h, and removing the mold to obtain an autoclaved sample D;
and 6, putting the non-autoclaved sample D into an autoclave, autoclaving at the temperature of 120 ℃ and 300 ℃ and under the pressure of 1-3MPa for 6-24h, taking out, and drying to obtain a finished product.
2. The method for preparing the autoclaved aerated concrete based on the titanium gypsum as claimed in claim 1, wherein the undisturbed titanium gypsum has a solid content of more than 75% and a viscosity of 3000-6000 Pa-S.
3. The method for preparing titanium gypsum-based autoclaved aerated concrete according to claim 1, wherein the alkali activator is one or more of sodium sulfate, sodium silicate, sodium carbonate, sodium bicarbonate, sodium hydroxide or water.
4. The method for preparing the titanium gypsum-based autoclaved aerated concrete according to claim 1, wherein the cementing material is one or more of a mixture of portland cement, fly ash and metakaolin.
5. The preparation method of the titanium gypsum-based autoclaved aerated concrete according to claim 1, wherein the foaming agent is one or a mixture of aluminum powder and hydrogen peroxide.
6. The method for preparing the titanium gypsum-based autoclaved aerated concrete according to claim 1, wherein the working temperature of the autoclave in the step 6 is 200 ℃ and the steam pressure is 2 MPa.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830677A (en) * | 2009-03-13 | 2010-09-15 | 上海晋马建材有限公司 | Desulfurized gypsum.phosphorous gypsum without roasting, gypsum brick, block and production method thereof |
| CN102674783A (en) * | 2011-03-08 | 2012-09-19 | 上海晋马建材有限公司 | Autoclaved desulfurized gypsum aerated building block without calcination |
| CN105036677A (en) * | 2015-07-03 | 2015-11-11 | 李宁 | Autoclaved aerated concrete block or plate and preparation method thereof |
| CN105985084A (en) * | 2015-01-27 | 2016-10-05 | 安徽森科新材料有限公司 | Gypsum hollow block and semi-dry production method of same |
| CN108314397A (en) * | 2018-02-13 | 2018-07-24 | 上海朗创实业发展有限公司 | A kind of titanium gypsum materials for wall and preparation method thereof |
-
2020
- 2020-08-21 CN CN202010847860.4A patent/CN112125598A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101830677A (en) * | 2009-03-13 | 2010-09-15 | 上海晋马建材有限公司 | Desulfurized gypsum.phosphorous gypsum without roasting, gypsum brick, block and production method thereof |
| CN102674783A (en) * | 2011-03-08 | 2012-09-19 | 上海晋马建材有限公司 | Autoclaved desulfurized gypsum aerated building block without calcination |
| CN105985084A (en) * | 2015-01-27 | 2016-10-05 | 安徽森科新材料有限公司 | Gypsum hollow block and semi-dry production method of same |
| CN105036677A (en) * | 2015-07-03 | 2015-11-11 | 李宁 | Autoclaved aerated concrete block or plate and preparation method thereof |
| CN108314397A (en) * | 2018-02-13 | 2018-07-24 | 上海朗创实业发展有限公司 | A kind of titanium gypsum materials for wall and preparation method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 郭泰民: "《工业副产石膏应用技术》", 31 January 2010, 中国建材工业出版社 * |
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Application publication date: 20201225 |