CN111620658A - Porous fly ash non-sintered ceramsite and preparation method thereof - Google Patents
Porous fly ash non-sintered ceramsite and preparation method thereof Download PDFInfo
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- CN111620658A CN111620658A CN202010552423.XA CN202010552423A CN111620658A CN 111620658 A CN111620658 A CN 111620658A CN 202010552423 A CN202010552423 A CN 202010552423A CN 111620658 A CN111620658 A CN 111620658A
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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
- C04B28/142—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
- C04B28/144—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 the synthetic calcium sulfate being a flue gas desulfurization product
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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
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00758—Uses not provided for elsewhere in C04B2111/00 for agri-, sylvi- or piscicultural or cattle-breeding applications
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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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
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- Fertilizers (AREA)
Abstract
The invention relates to the technical field of preparation of non-sintered ceramsite, and in particular relates to a porous fly ash non-sintered ceramsite and a preparation method thereof, wherein the porous fly ash non-sintered ceramsite is prepared by adding water into raw materials of fly ash, calcium oxide, desulfurized gypsum and agricultural high-molecular water-absorbent resin for granulation, the process is simple, high-temperature calcination is not required in the preparation process, and the porous fly ash non-sintered ceramsite is energy-saving and environment-friendly; the unique efficient pore-forming process can form pores in the inside and on the surface of the ceramsite in a solid-phase state, so that the obtained ceramsite product has high porosity, and the bulk density of the ceramsite is also reduced; the residual agricultural high molecular water-absorbing resin can improve the water and fertilizer retention performance of the material.
Description
Technical Field
The invention relates to the technical field of preparation of non-sintered ceramsite, and particularly relates to porous fly ash non-sintered ceramsite and a preparation method thereof.
Background
The ceramsite has rich pores and has the effects of water and fertilizer retention; meanwhile, the culture medium has certain strength and adjustable particle size, and is an excellent horticultural culture medium. However, most of the horticultural ceramsite in the current market is sintered ceramsite, which needs to be calcined at a temperature of over 1000 ℃, so that the horticultural ceramsite has high cost and is not energy-saving and environment-friendly. Therefore, there is a need to develop a non-sintered ceramsite prepared at a low temperature.
The invention with the publication number of CN102701785A discloses a preparation method of fly ash non-sintered ceramsite, which takes fly ash, cement, metal sulfide and the like as main raw materials, and prepares the non-sintered ceramsite after granulation and autoclaved curing, but the method is lack of the process of foaming and pore-forming, and the prepared ceramsite has higher density and undeveloped pores.
The invention with the publication number of CN106220011A discloses a preparation method of gardening hollow non-sintered ceramsite, which is characterized in that the ceramsite is prepared by using sawdust as a core and wrapping a ceramsite shell on the outer layer, and the hollow non-sintered ceramsite is obtained after the sawdust core is degraded.
The invention patent with publication number CN105060923A discloses a preparation method of light non-fired ceramsite, which utilizes aluminum powder to carry out solid-phase foaming to form pores, but the aluminum powder as a pore-forming agent can generate hydrogen after being fully contacted and reacted with alkali, thereby generating bubbles and forming pores. The ceramsite green ball is solid and contains a small amount of water, but the sufficient contact and reaction between aluminum powder and alkali cannot be guaranteed, so that the foaming and pore-forming effects are poor.
In conclusion, the abundant porous structure is an important condition for ensuring that the ceramsite has high-efficiency water and fertilizer retention capacity so as to be applied to the field of gardening, and the problem of the current preparation field of non-fired ceramsite is to find a novel technical means which is high-efficiency and suitable for pore-forming of raw ceramsite spheres.
Disclosure of Invention
The invention aims to prepare a porous fly ash non-fired ceramsite with high porosity and strong water and fertilizer retention capacity, adopts a new pore-forming material and technology, and provides a novel porous fly ash non-fired ceramsite and a preparation method thereof.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a preparation method of porous fly ash unfired ceramsite comprises the following steps:
s1, uniformly mixing 60-80 parts by weight of fly ash, 20-40 parts by weight of calcium oxide, 1-2 parts by weight of desulfurized gypsum and 0.1-2 parts by weight of agricultural high polymer water-absorbing resin to obtain a mixed material;
s2, putting the mixed material in the S1 into a disc granulator, and spraying 50-70 parts by weight of water into the granulator at a flow rate of 1-5 parts per minute to obtain ceramsite green pellets;
s3, sieving the ceramsite green pellets in the S2 to obtain ceramsite green pellets with the particle size of 8-20 mm;
s4, placing the ceramsite green pellets in the S3 into a steam curing device for curing, wherein the air humidity in the curing device is more than 70%, and the curing temperature program is as follows: then curing at 90-120 ℃ for 1-2h, oxidizing at 150-.
Further, the main chemical components of the agricultural high-molecular water-absorbing resin are one or more of polyacrylamide, sodium polyacrylate, potassium polyacrylate or ammonium polyacrylate.
Further, the rotating speed of the disc granulator is 20-50 revolutions per minute, and the inclination angle is 30-50 degrees.
The preparation method of the porous fly ash non-sintered ceramsite comprises the following steps: 60-80 parts of fly ash, 20-40 parts of calcium oxide, 1-2 parts of desulfurized gypsum, 0.1-2 parts of agricultural high polymer water-absorbing resin and 50-70 parts of water.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides a porous fly ash unburned ceramsite and a preparation method thereof. The agricultural high-molecular water-absorbing resin can rapidly lose water at a temperature higher than 100 ℃ to reduce the volume, so that pores occupied by the agricultural high-molecular water-absorbing resin are released, and the final ceramsite forms a porous structure. The method combines the dehydration of the agricultural high-molecular water-absorbent resin and the autoclaved curing process of the ceramsite, and can realize the synchronous pore-forming and curing. In order to allow the agricultural high-molecular water-absorbent resin to lose water and release holes, the agricultural high-molecular water-absorbent resin needs to be maintained at 90-120 ℃ for 1-2 hours. In order to accelerate the hydration of the material, the curing is required to be carried out for 8-12h at the temperature of 150-200 ℃ in a humidity environment of more than 70 percent. The process is simple, high-temperature calcination is not needed in the preparation process, and the preparation method is energy-saving and environment-friendly; the unique efficient pore-forming process can form pores in the inside and on the surface of the ceramsite in a solid-phase state, so that the obtained ceramsite product has high porosity; the residual agricultural high molecular water-absorbing resin can improve the water and fertilizer retention performance of the material.
Drawings
FIG. 1 is a microscopic view of the porous fly ash non-sintered ceramsite prepared by the method.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention
Example 1
The preparation method of the porous fly ash non-sintered ceramsite in the embodiment comprises the following steps:
1) weighing 60 parts of fly ash, 40 parts of calcium oxide, 1 part of desulfurized gypsum, 0.1 part of agricultural high-molecular water-absorbing resin and 50 parts of water according to parts by weight;
2) uniformly mixing the raw materials except the cold water in the step 1) to obtain a mixed material;
3) putting the mixed material obtained in the step 2) into a disc granulator, enabling the granulator to work at an inclination angle of 30 degrees and a rotating speed of 20 revolutions per minute, and spraying the cold water obtained in the step 1) into the granulator at a flow rate of 1 part per minute to obtain ceramsite green balls;
4) sieving the ceramsite green balls in the step 3) to obtain ceramsite green balls with the particle size of 8-20 mm;
5) placing the ceramsite green pellets in the step 4) into a steam curing device for curing, wherein the air humidity in the curing device is 70%, and the curing temperature program is as follows: curing at 90 ℃ for 1h, then curing at 150 ℃ for 8h, and finally naturally cooling to room temperature to obtain the porous fly ash non-sintered ceramsite, wherein the porosity of the porous fly ash non-sintered ceramsite can reach 22%.
Example 2
The preparation method of the porous fly ash non-sintered ceramsite in the embodiment comprises the following steps:
1) weighing 80 parts of fly ash, 20 parts of calcium oxide, 2 parts of desulfurized gypsum, 2 parts of agricultural high-molecular water-absorbing resin and 70 parts of water according to parts by weight;
2) uniformly mixing the raw materials except the cold water in the step 1) to obtain a mixed material;
3) putting the mixed material obtained in the step 2) into a disc granulator, enabling the granulator to work at an inclination angle of 50 degrees and a rotating speed of 50 revolutions per minute, and spraying the cold water obtained in the step 1) into the granulator at a flow rate of 5 parts per minute to obtain ceramsite green balls;
4) sieving the ceramsite green balls in the step 3) to obtain ceramsite green balls with the particle size of 8-20 mm;
5) placing the ceramsite green pellets in the step 4) into a steam curing device for curing, wherein the air humidity in the curing device is 70%, and the curing temperature program is as follows: curing at 120 ℃ for 2h, then curing at 200 ℃ for 12h, and finally naturally cooling to room temperature to obtain the porous fly ash non-sintered ceramsite, wherein the porosity of the porous fly ash non-sintered ceramsite can reach 38%.
Example 3
The preparation method of the porous fly ash non-sintered ceramsite in the embodiment comprises the following steps:
1) weighing 70 parts of fly ash, 30 parts of calcium oxide, 1.5 parts of desulfurized gypsum, 1 part of agricultural high-molecular water-absorbing resin and 60 parts of water according to parts by weight;
2) uniformly mixing the raw materials except the cold water in the step 1) to obtain a mixed material;
3) putting the mixed material obtained in the step 2) into a disc granulator, enabling the granulator to work at an inclination angle of 40 degrees and a rotating speed of 40 revolutions per minute, and spraying the cold water obtained in the step 1) into the granulator at a flow rate of 3 parts per minute to obtain ceramsite green balls;
4) sieving the ceramsite green balls in the step 3) to obtain ceramsite green balls with the particle size of 8-20 mm;
5) placing the ceramsite green pellets in the step 4) into a steam curing device for curing, wherein the air humidity in the curing device is 70%, and the curing temperature program is as follows: curing at 100 ℃ for 1.5h, then curing at 180 ℃ for 10h, and finally naturally cooling to room temperature to obtain the porous fly ash unfired ceramsite, wherein the porosity of the porous fly ash unfired ceramsite can reach 32%, and a microscopic diagram of pores is shown in figure 1.
The agricultural high molecular water absorption resin adopted in the above embodiments has one or more of polyacrylamide, sodium polyacrylate, potassium polyacrylate or ammonium polyacrylate as main chemical components.
Although only the preferred embodiments of the present invention have been described in detail, the present invention is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art, and all changes are encompassed in the scope of the present invention.
Claims (4)
1. The preparation method of the porous fly ash unfired ceramsite is characterized by comprising the following steps of:
s1, uniformly mixing 60-80 parts by weight of fly ash, 20-40 parts by weight of calcium oxide, 1-2 parts by weight of desulfurized gypsum and 0.1-2 parts by weight of agricultural high polymer water-absorbing resin to obtain a mixed material;
s2, putting the mixed material in the S1 into a disc granulator, and spraying 50-70 parts by weight of water into the granulator at a flow rate of 1-5 parts per minute to obtain ceramsite green pellets;
s3, sieving the ceramsite green pellets in the S2 to obtain ceramsite green pellets with the particle size of 8-20 mm;
s4, placing the ceramsite green pellets in the S3 into a steam curing device for curing, wherein the air humidity in the curing device is more than 70%, and the curing temperature program is as follows: then curing at 90-120 ℃ for 1-2h, oxidizing at 150-.
2. The method for preparing the porous fly ash unfired ceramsite according to claim 1, which is characterized by comprising the following steps of: the main chemical components of the agricultural high-molecular water-absorbing resin are one or more of polyacrylamide, sodium polyacrylate, potassium polyacrylate or ammonium polyacrylate.
3. The method for preparing the porous fly ash unfired ceramsite according to claim 1, which is characterized by comprising the following steps of: the rotating speed of the disc granulator is 20-50 r/min, and the inclination angle is 30-50 degrees.
4. The porous fly ash non-sintered ceramsite is characterized by being prepared from the following raw materials in parts by weight: 60-80 parts of fly ash, 20-40 parts of calcium oxide, 1-2 parts of desulfurized gypsum, 0.1-2 parts of agricultural high polymer water-absorbing resin and 50-70 parts of water.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112552008A (en) * | 2020-12-28 | 2021-03-26 | 贺州学院 | Preparation method of high-porosity baking-free ceramsite with highly communicated pore structures |
| CN112934944A (en) * | 2021-01-28 | 2021-06-11 | 山西大学 | Method for using coal-based solid waste for repairing and treating coal gangue dump |
| CN114656282A (en) * | 2022-04-29 | 2022-06-24 | 兰州资源环境职业技术大学 | Method for manufacturing environment-friendly brick by using construction waste |
| CN116081969A (en) * | 2022-11-30 | 2023-05-09 | 柳晶（溧阳）环保科技有限公司 | Novel water-retaining ceramsite and preparation method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101113088A (en) * | 2007-07-06 | 2008-01-30 | 杨子江 | Production method for cold-foaming coal ash baking-free ceramicite |
| CN101148335A (en) * | 2007-08-31 | 2008-03-26 | 武汉理工大学 | Baking-free plasticizing haydite and preparation method thereof |
| RU2341487C2 (en) * | 2007-01-25 | 2008-12-20 | Юлия Алексеевна Щепочкина | Raw mix for ceramsite production |
| CN103332902A (en) * | 2013-07-03 | 2013-10-02 | 武汉理工大学 | Water absorbent swelling resin aggregate concrete and preparation method thereof |
| CN104150948A (en) * | 2014-07-09 | 2014-11-19 | 华南理工大学 | Composite light weight ceramic ecological building material with humidifying function and preparation method thereof |
| CN109354445A (en) * | 2018-10-12 | 2019-02-19 | 天津大学 | A kind of preparation method of non-sintered lytag |
| CN110790613A (en) * | 2019-12-05 | 2020-02-14 | 北京享云智汇科技有限公司 | Contaminated soil remediation fertilizer and preparation method thereof |
-
2020
- 2020-06-17 CN CN202010552423.XA patent/CN111620658A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2341487C2 (en) * | 2007-01-25 | 2008-12-20 | Юлия Алексеевна Щепочкина | Raw mix for ceramsite production |
| CN101113088A (en) * | 2007-07-06 | 2008-01-30 | 杨子江 | Production method for cold-foaming coal ash baking-free ceramicite |
| CN101148335A (en) * | 2007-08-31 | 2008-03-26 | 武汉理工大学 | Baking-free plasticizing haydite and preparation method thereof |
| CN103332902A (en) * | 2013-07-03 | 2013-10-02 | 武汉理工大学 | Water absorbent swelling resin aggregate concrete and preparation method thereof |
| CN104150948A (en) * | 2014-07-09 | 2014-11-19 | 华南理工大学 | Composite light weight ceramic ecological building material with humidifying function and preparation method thereof |
| CN109354445A (en) * | 2018-10-12 | 2019-02-19 | 天津大学 | A kind of preparation method of non-sintered lytag |
| CN110790613A (en) * | 2019-12-05 | 2020-02-14 | 北京享云智汇科技有限公司 | Contaminated soil remediation fertilizer and preparation method thereof |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112552008A (en) * | 2020-12-28 | 2021-03-26 | 贺州学院 | Preparation method of high-porosity baking-free ceramsite with highly communicated pore structures |
| CN112934944A (en) * | 2021-01-28 | 2021-06-11 | 山西大学 | Method for using coal-based solid waste for repairing and treating coal gangue dump |
| CN114656282A (en) * | 2022-04-29 | 2022-06-24 | 兰州资源环境职业技术大学 | Method for manufacturing environment-friendly brick by using construction waste |
| CN116081969A (en) * | 2022-11-30 | 2023-05-09 | 柳晶（溧阳）环保科技有限公司 | Novel water-retaining ceramsite and preparation method thereof |
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Effective date of registration: 20201221 Address after: 030006 No. 92, Hollywood Road, Taiyuan, Shanxi Applicant after: Shanxi University Applicant after: SHANXI RUIENZE TECHNOLOGY Co.,Ltd. Address before: 030006 No. 92, Hollywood Road, Taiyuan, Shanxi Applicant before: Shanxi University |
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