CN112159145A - Gypsum primary and final setting time regulator and preparation method thereof - Google Patents
Gypsum primary and final setting time regulator and preparation method thereof Download PDFInfo
- Publication number
- CN112159145A CN112159145A CN202011060071.2A CN202011060071A CN112159145A CN 112159145 A CN112159145 A CN 112159145A CN 202011060071 A CN202011060071 A CN 202011060071A CN 112159145 A CN112159145 A CN 112159145A
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- Prior art keywords
- gypsum
- setting time
- final setting
- calcium hydroxide
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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
- C04B40/0028—Aspects relating to the mixing step of the mortar preparation
- C04B40/0039—Premixtures of ingredients
- C04B40/0046—Premixtures of ingredients characterised by their processing, e.g. sequence of mixing the ingredients when preparing the premixtures
-
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Silicon Compounds (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
Abstract
The invention discloses a gypsum primary and final setting time regulator, which comprises calcium hydroxide, mixed components, a melamine water reducing agent, tartaric acid and fumed silica, wherein the gypsum primary and final setting time regulator comprises the following components in percentage by weight: 30-50 parts of calcium hydroxide, 20-40 parts of mixed components, 2-10 parts of melamine water reducing agent, 10-20 parts of tartaric acid and 5-15 parts of fumed silica by weight, and the preparation method is to mix the components. Through the mode, the raw materials are easy to obtain, the preparation method is simple, the addition amount is small, the initial setting time and the final setting time interval can be prolonged by 5 times, the effective operation time is ensured, and the method is widely applied.
Description
Technical Field
The invention relates to the technical field of gypsum, in particular to a gypsum initial and final setting time regulator and a preparation method thereof.
Background
Gypsum is a monoclinic mineral and is a hydrate whose main chemical component is calcium sulfate. Gypsum is a widely used industrial and building material and can be used in cement retarders, gypsum building products, model making, medical food additives, sulfuric acid production, paper fillers, paint fillers, and the like. The gypsum and its products have fine sound-proof, heat-insulating and fire-proof properties due to the microporous structure and heat-dewatering property. The initial setting and final setting time intervals of the existing gypsum are short whether the retarder is doped or not, the operation time is seriously influenced, and the initial and final setting time intervals can be prolonged after the regulator is doped.
Disclosure of Invention
The invention mainly solves the technical problem of providing a gypsum initial and final setting time regulator and a preparation method thereof, and the use effect is good.
In order to solve the technical problems, the invention adopts a technical scheme that: the gypsum primary and final setting time regulator comprises calcium hydroxide, mixed components, a melamine water reducer, tartaric acid and fumed silica, and comprises the following components in parts by weight: 30-50 parts of calcium hydroxide, 20-40 parts of mixed components, 2-10 parts of melamine water reducing agent, 10-20 parts of tartaric acid and 5-15 parts of fumed silica.
In a preferred embodiment of the present invention, the specific surface area of the calcium hydroxide is 6000 to 6500m2/kg。
In a preferred embodiment of the present invention, the particle size of the calcium hydroxide is less than 400 mesh.
In a preferred embodiment of the invention, the mixed component is obtained by putting magnesium aluminum silicate into a sodium chloride solution and then drying.
In a preferred embodiment of the present invention, the specific surface area of the magnesium aluminum silicate is 3000-4000m2/kg。
In a preferred embodiment of the present invention, the particle size of the magnesium aluminum silicate is less than 325 mesh.
The preparation method of the gypsum initial and final setting time regulator comprises the following steps: (1) respectively carrying out ball milling and sieving on calcium hydroxide and magnesium aluminum silicate to obtain calcium hydroxide and magnesium aluminum silicate meeting the requirements; (2) putting magnesium aluminum silicate into a sodium chloride solution, and drying to obtain a mixed component; (3) and fully mixing the calcium hydroxide, the mixed components, the melamine water reducing agent, the tartaric acid and the gas-phase silicon dioxide to obtain the primary and final setting time regulator of the gypsum.
In a preferred embodiment of the present invention, the ball milling in step (1) is performed by using a ball mill.
In a preferred embodiment of the present invention, the mass fraction of the sodium chloride solution in step (2) is 5%.
In a preferred embodiment of the present invention, the drying in step (2) is performed by infrared drying to control the water content of the mixed components within 3%.
The invention has the beneficial effects that: the gypsum initial and final setting time regulator and the preparation method thereof have the advantages of easily obtained raw materials, simple preparation method, small addition amount, capability of prolonging the interval between the initial setting time and the final setting time by 5 times, guarantee of effective operation time and wide application.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the gypsum initial and final setting time regulator includes calcium hydroxide, mixed components, melamine water reducing agent, tartaric acid and gas phase silica. The gypsum initial and final setting time regulator comprises the following components in percentage by weight: the water-reducing agent comprises, by weight, 40 parts of calcium hydroxide, 30 parts of a mixed component, 5 parts of a melamine water reducing agent, 15 parts of tartaric acid and 10 parts of fumed silica.
The preparation method of the gypsum initial and final setting time regulator comprises the following steps:
(1) ball milling the calcium hydroxide by a ball mill until the specific surface area of the calcium hydroxide is 6200m2Per kg, the balance of the 400-mesh sieve is not more than 0.5 percent, and calcium hydroxide meeting the requirement is obtained;
(2) ball milling is carried out on the magnesium aluminum silicate by adopting a ball mill, and the specific surface area of the magnesium aluminum silicate is milled to 3500m2The rest of the powder is not more than 0.5 percent per kg and is sieved by a 325-mesh sieve, so that the magnesium aluminum silicate meeting the requirement is obtained;
(3) soaking magnesium aluminum silicate in a sodium chloride solution with the mass fraction of 5%, and after 24 hours, controlling the water content within 3% by adopting infrared drying to obtain a mixed component;
(4) and fully mixing the calcium hydroxide, the mixed components, the melamine water reducing agent, the tartaric acid and the fumed silica to obtain the gypsum primary and final setting time regulator, wherein the using dosage of the gypsum primary and final setting time regulator is 1% of that of the gypsum.
After the obtained gypsum initial and final setting time regulator is added into gypsum, the interval between the initial setting time and the final setting time is prolonged by 5 times.
Example two:
the gypsum initial and final setting time regulator includes calcium hydroxide, mixed components, melamine water reducing agent, tartaric acid and gas phase silica. The gypsum initial and final setting time regulator comprises the following components in percentage by weight: 30 parts of calcium hydroxide, 20 parts of mixed components, 2 parts of melamine water reducing agent, 10 parts of tartaric acid and 5 parts of fumed silica.
The preparation method of the gypsum initial and final setting time regulator comprises the following steps:
(1) ball milling the calcium hydroxide by a ball mill until the specific surface area of the calcium hydroxide is 6000m2Per kg, the balance of the 400-mesh sieve is not more than 0.5 percent, and calcium hydroxide meeting the requirement is obtained;
(2) ball milling the magnesium aluminum silicate by a ball mill until the specific surface area of the magnesium aluminum silicate is 3000m2The rest of the powder is not more than 0.5 percent per kg and is sieved by a 325-mesh sieve, so that the magnesium aluminum silicate meeting the requirement is obtained;
(3) soaking magnesium aluminum silicate in a sodium chloride solution with the mass fraction of 5%, and after 24 hours, controlling the water content within 3% by adopting infrared drying to obtain a mixed component;
(4) and fully mixing the calcium hydroxide, the mixed components, the melamine water reducing agent, the tartaric acid and the fumed silica to obtain the gypsum primary and final setting time regulator, wherein the using dosage of the gypsum primary and final setting time regulator is 1% of that of the gypsum.
After the obtained gypsum initial and final setting time regulator is added into gypsum, the interval between the initial setting time and the final setting time is prolonged by 5 times.
Example three:
the gypsum initial and final setting time regulator includes calcium hydroxide, mixed components, melamine water reducing agent, tartaric acid and gas phase silica. The gypsum initial and final setting time regulator comprises the following components in percentage by weight: 50 parts of calcium hydroxide, 40 parts of mixed components, 10 parts of melamine water reducing agent, 20 parts of tartaric acid and 15 parts of fumed silica.
The preparation method of the gypsum initial and final setting time regulator comprises the following steps:
(1) ball milling the calcium hydroxide by a ball mill until the specific surface area of the calcium hydroxide is 6500m2Per kg, the balance of the 400-mesh sieve is not more than 0.5 percent, and calcium hydroxide meeting the requirement is obtained;
(2) ball milling the magnesium aluminum silicate by a ball mill until the specific surface area of the magnesium aluminum silicate is 4000m2The rest of the powder is not more than 0.5 percent per kg and is sieved by a 325-mesh sieve, so that the magnesium aluminum silicate meeting the requirement is obtained;
(3) soaking magnesium aluminum silicate in a sodium chloride solution with the mass fraction of 5%, and after 24 hours, controlling the water content within 3% by adopting infrared drying to obtain a mixed component;
(4) and fully mixing the calcium hydroxide, the mixed components, the melamine water reducing agent, the tartaric acid and the fumed silica to obtain the gypsum primary and final setting time regulator, wherein the using dosage of the gypsum primary and final setting time regulator is 1% of that of the gypsum.
After the obtained gypsum initial and final setting time regulator is added into gypsum, the interval between the initial setting time and the final setting time is prolonged by 5 times.
The invention has the beneficial effects that:
firstly, the raw materials of the gypsum primary and final setting time regulator are easy to obtain, the preparation method is simple, and the addition amount is small;
secondly, the gypsum initial and final setting time regulator can prolong the interval between the initial setting time and the final setting time by 5 times, and ensure effective operation time.
The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by the present specification, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. The gypsum initial and final setting time regulator is characterized by comprising calcium hydroxide, mixed components, a melamine water reducer, tartaric acid and fumed silica, wherein the gypsum initial and final setting time regulator comprises the following components in percentage by weight: 30-50 parts of calcium hydroxide, 20-40 parts of mixed components, 2-10 parts of melamine water reducing agent, 10-20 parts of tartaric acid and 5-15 parts of fumed silica.
2. The gypsum primary and final setting time regulator according to claim 1, wherein the specific surface area of the calcium hydroxide is 6000 to 6500m2/kg。
3. The gypsum primary and secondary set time adjuster according to claim 1, wherein the particle size of the calcium hydroxide is less than 400 mesh.
4. The gypsum initial and final setting time regulator as claimed in claim 1, wherein the mixing component is prepared by adding magnesium aluminum silicate into sodium chloride solution and drying.
5. The gypsum initial and final setting time regulator as claimed in claim 4, wherein the specific surface area of the magnesium aluminum silicate is 3000-4000m2/kg。
6. The gypsum primary and final set time adjuster according to claim 4, wherein the particle size of the magnesium aluminum silicate is less than 325 mesh.
7. The method for preparing the gypsum primary and final setting time regulator as claimed in claim 1, comprising the steps of: (1) respectively carrying out ball milling and sieving on calcium hydroxide and magnesium aluminum silicate to obtain calcium hydroxide and magnesium aluminum silicate meeting the requirements; (2) putting magnesium aluminum silicate into a sodium chloride solution, and drying to obtain a mixed component; (3) and fully mixing the calcium hydroxide, the mixed components, the melamine water reducing agent, the tartaric acid and the gas-phase silicon dioxide to obtain the primary and final setting time regulator of the gypsum.
8. The method for preparing a gypsum primary and final setting time regulator according to claim 7, wherein the ball milling in the step (1) is performed by using a ball mill.
9. The method for preparing the gypsum primary and final setting time regulator according to claim 7, wherein the mass fraction of the sodium chloride solution in the step (2) is 5%.
10. The method for preparing the regulator of initial and final setting time of gypsum according to claim 7, wherein the drying in step (2) is performed by infrared drying to control the water content of the mixed components within 3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011060071.2A CN112159145A (en) | 2020-09-30 | 2020-09-30 | Gypsum primary and final setting time regulator and preparation method thereof |
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| CN202011060071.2A CN112159145A (en) | 2020-09-30 | 2020-09-30 | Gypsum primary and final setting time regulator and preparation method thereof |
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| CN202011060071.2A Pending CN112159145A (en) | 2020-09-30 | 2020-09-30 | Gypsum primary and final setting time regulator and preparation method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582566A (en) * | 2021-08-26 | 2021-11-02 | 苏州市兴邦化学建材有限公司 | Preparation method of improver for phosphogypsum |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001130936A (en) * | 1999-10-28 | 2001-05-15 | Ajinomoto Co Inc | Coagulation/cure-delaying agent for gypsum |
| CN103482898A (en) * | 2013-06-27 | 2014-01-01 | 俞锡贤 | Thickening time control agent used for gypsum mortar, and preparation method thereof |
| CN108341640A (en) * | 2018-04-12 | 2018-07-31 | 江苏兆佳建材科技有限公司 | A kind of early-strength gypsum base thick-layer leveling mortar |
| CN109231867A (en) * | 2018-08-29 | 2019-01-18 | 宁波金泽新型建材有限公司 | A kind of efficient compound calcium sulphate retarder and preparation method thereof |
| CN109665794A (en) * | 2018-12-29 | 2019-04-23 | 泰山石膏有限公司 | A kind of heavy desulfurization plastering gupsum |
| CN110342894A (en) * | 2019-07-25 | 2019-10-18 | 成都宏基建材股份有限公司 | A kind of novel water-proof gypsum based self-leveling material |
-
2020
- 2020-09-30 CN CN202011060071.2A patent/CN112159145A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001130936A (en) * | 1999-10-28 | 2001-05-15 | Ajinomoto Co Inc | Coagulation/cure-delaying agent for gypsum |
| CN103482898A (en) * | 2013-06-27 | 2014-01-01 | 俞锡贤 | Thickening time control agent used for gypsum mortar, and preparation method thereof |
| CN108341640A (en) * | 2018-04-12 | 2018-07-31 | 江苏兆佳建材科技有限公司 | A kind of early-strength gypsum base thick-layer leveling mortar |
| CN109231867A (en) * | 2018-08-29 | 2019-01-18 | 宁波金泽新型建材有限公司 | A kind of efficient compound calcium sulphate retarder and preparation method thereof |
| CN109665794A (en) * | 2018-12-29 | 2019-04-23 | 泰山石膏有限公司 | A kind of heavy desulfurization plastering gupsum |
| CN110342894A (en) * | 2019-07-25 | 2019-10-18 | 成都宏基建材股份有限公司 | A kind of novel water-proof gypsum based self-leveling material |
Non-Patent Citations (1)
| Title |
|---|
| 张玉柱等: "《铁矿粉造块理论与实践》", 31 January 2012, 冶金工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113582566A (en) * | 2021-08-26 | 2021-11-02 | 苏州市兴邦化学建材有限公司 | Preparation method of improver for phosphogypsum |
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