CN106866015B - A kind of β semi-hydrated gypsum retarder and preparation method thereof - Google Patents
A kind of β semi-hydrated gypsum retarder and preparation method thereof Download PDFInfo
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- CN106866015B CN106866015B CN201710153287.5A CN201710153287A CN106866015B CN 106866015 B CN106866015 B CN 106866015B CN 201710153287 A CN201710153287 A CN 201710153287A CN 106866015 B CN106866015 B CN 106866015B
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- China
- Prior art keywords
- slag
- retarder
- semi
- gypsum
- metallurgical
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Classifications
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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
- C04B40/0042—Powdery mixtures
-
- 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
Abstract
The present invention relates to a kind of β semi-hydrated gypsum retarder and preparation method thereof by mechanical grinding, to be mixed to get inorganic compounding retarder with zeolite, metallurgical slag (manganese slag, steel slag or slag etc.) for primary raw material；Preparation section is simple, at low cost, resultant effect is good.The present invention gives full play to the synergistic combination effect between each material of zeolite, metallurgical slag, cement, it is adjustable the setting time of β semi-hydrated gypsum, compared with the retarder such as traditional sodium citrate, calgon, gypsum material loss of strength is small, moreover it is possible to effectively improve the water resistance of gypsum material；Not only gypsum performance had been improved, but also can effectively solve the problem of metallurgical slag accumulation pollutes environment, has realized and makes the best use of everything.
Description
Technical field
Zeolite, metallurgical slag, the β semi-hydrated gypsum retarder that cement is raw material and its preparation side are utilized the present invention relates to a kind of
Method belongs to building materials field.
Background technique
Quickly, setting time only has 5 ~ 20 minutes to the condensation setting rate of building gypsum, and operable time is very short, often not
It is able to satisfy the needs of the molding and construction of gypsum base material.In order to solve this problem, built frequently with slow plus solidifying agent is mixed to adjust
Build the setting time of gypsum.Currently, retarder has become all kinds of gypsum substrates such as brushing gypsum, gypsum base putty, model plaster
One of necessary component of material.
Currently used calcium sulphate retarder mainly has three classes: organic acid and its soluble salt, alkaline phosphate and protein
Class macromolecular compound.In recent years, both at home and abroad retarder function and effect have been carried out with relatively broad research: calcium sulphate retarder exists
While deferred action occurs, can all have an adverse effect to some extent to the microstructure of gypsum hardenite, cause intensity
Loss.Wherein Study of Organic Acid is most, the best sodium salt for belonging to citric acid and it of effect, only can delay stone under low-dosage very much
The setting time of cream, but citric acid and its salt will lead to gypsum intensity and acutely declines；Phosphoric acid salt retarder equally exists intensity
The problem of loss.Protein-based retarder includes gelatine, peptone etc., the crystal morphology of dihydrate gypsum is influenced it is relatively small, by force
Degree loss is smaller, but it is only just having obvious retarding effect compared with high additive, and with further increasing for volume, use cost is very
It is high.
For in the prior art commonly use retarder retarding effect, retarding time adjust and in terms of not
Foot.In recent years, China is more in the research of calcium sulphate retarder, also achieves a kind of some achievements: patent of invention " calcium sulphate retarder
And preparation method thereof (application number CN201510162745.2) ", using alkaline matter, organic acid, acid anhydrides etc. to protide material
Carrying out the retarder that depth chemical process synthesizes has setting time length, intensity damage relative to other inorganic salts retarder
Lose small advantage；A kind of patent of invention " retarder and production method (application number for paring stone cream base plastering gupsum
CN201610145248.6 the) " slow setting being prepared using bone collagen, calcite in powder, citric acid and exciting agent for raw material
Agent can be substantially reduced loss of strength rate.From the point of view of comprehensive calcium sulphate retarder status, preparation section is generally all more complex, production
It is at high cost, in addition, the function and effect of retarder are more single.
The present invention gives full play to the synergistic combination effect between metallurgical slag, obtains nothing using zeolite, metallurgical slag as raw material
Machine compound retarder can effectively extend the setting time of β semi-hydrated gypsum, delay to the negative effect of gypsum material intensity than traditional
Solidifying agent is small.Invention both improves gypsum performances, and solve the problems, such as metallurgical slag land occupation, pollution environment, realize
It makes the best use of everything.
Summary of the invention
The present invention provides a kind of β semi-hydrated gypsum retarder and preparation method thereof.With zeolite, metallurgical slag (manganese slag, steel slag
Or slag etc.) it is primary raw material, by mechanical grinding, it is mixed to get inorganic compounding retarder, can be used for adjusting β semi-hydrated gypsum
Setting time improves its water resistance；The retarder has the characteristics that preparation section is simple, at low cost, resultant effect is good.
A kind of β semi-hydrated gypsum retarder, by weight, by 1 ~ 6 part of zeolite powder, 3 ~ 12 parts of metallurgical ground-slag and 1 ~ 2 part
Cement composition.
Further, the metallurgical ground-slag is manganese slag, steel slag, any one or any combination in slag.
As a further improvement of the present invention, a kind of β semi-hydrated gypsum retarder, by weight, by 2 parts of zeolite powder, 4 parts
Metallurgical ground-slag and 2 parts of cement composition, wherein it is 4:5:3 that the group of metallurgical ground-slag, which becomes the ratio between manganese slag, steel slag, slag,.
Further, the specific surface area of the metallurgical ground-slag is 450 ~ 550m2/kg。
Further, the grain fineness of the zeolite powder is 200 mesh or more.
Further, the cement is any one of " general-purpose cement " GB175-2007.
A kind of preparation method of β semi-hydrated gypsum retarder, the specific steps are as follows:
(1) metallurgical slag is dried respectively, carries out grinding after measuring according to a certain percentage；
(2) zeolite powder, metallurgical ground-slag and cement are mixed and made into retarder in proportion.
Beneficial effects of the present invention: the present invention by mechanical grinding, is mixed using zeolite and industry metallurgy waste residue as primary raw material
Conjunction obtains inorganic compounding retarder.The technology of the present invention realizes the comprehensive utilization of metallurgical slag, can be reduced building materials of gypsum industry pair
The use of conventional set retarder, preparation section is simple, at low cost.
Zeolite, metallurgical slag, cement in retarder of the invention can give full play to the synergistic combination between different material
Effect is adjustable the setting time of β semi-hydrated gypsum.Compared with the retarder such as traditional sodium citrate, calgon, condensing
In the case that time is close, retarder of the invention keeps gypsum material loss of strength small, moreover it is possible to effectively improve gypsum material
Water resistance.Retarder of the invention had not only improved gypsum performance, but also can effectively reduce metallurgical slag accumulation and pollute environment
The problem of, it realizes and makes the best use of everything.
Specific embodiment
It elaborates with reference to embodiments to the present invention.
The embodiment of the present invention test method is according to standard " GB/T17669.4-1999 building gypsum net slurry physical property
Measurement ", " measurement of GB/T 17669.3-1999 building gypsum mechanical property " carry out.
Embodiment one
By manganese slag, manganese ground-slag (specific surface area 458m is made in dry, grinding2/ kg)；By 6 parts of zeolites (200 mesh), 7 parts of manganese slags
Powder, 1 part of portland slag cement are uniformly mixed and obtain retarder.
Mixture, ratio of water to material 0.60, molding, when being condensed is made in 92 parts of β semi-hydrated gypsum, 8 parts of retarder
Between, strength character test.
Embodiment two
Metallurgical ground-slag (specific surface area 458m is made in 4 parts of manganese slag, 5 parts of steel slag, the drying of 3 parts of slag, grinding2/
Kg)；2 parts of zeolites (300 mesh), 4 parts of metallurgical ground-slags, 2 parts of ordinary portland cements are uniformly mixed and obtain retarder.
Mixture, ratio of water to material 0.61, molding, when being condensed is made in 94 parts of β semi-hydrated gypsum, 6 parts of retarder
Between, strength character test.
Embodiment three
Mixture is made in 86 parts of β semi-hydrated gypsum, 14 parts of the retarder obtained in embodiment two, ratio of water to material is
0.59, molding carries out setting time, strength character test.
Example IV
Metallurgical ground-slag (specific surface area 534m is made in 3 parts of slag, 7 parts of manganese slag drying, grinding2/ kg)；3 parts are boiled
Stone (300 mesh), 10 parts of metallurgical ground-slags, 2 parts of composite Portland cements are uniformly mixed and obtain retarder.
Mixture, ratio of water to material 0.58, molding, when being condensed is made in 85 parts of β semi-hydrated gypsum, 15 parts of retarder
Between, strength character test.
Embodiment five
Metallurgical ground-slag (specific surface area 530m is made in 2 parts of manganese slag, the drying of 3 parts of steel slag, grinding2/ kg)；3 parts are boiled
Stone (200 mesh), 5 parts of metallurgical ground-slags, 1 part of Portland fly ash cement are uniformly mixed and obtain retarder.
Mixture, ratio of water to material 0.60, molding, when being condensed is made in 94 parts of β semi-hydrated gypsum, 6 parts of retarder
Between, strength character test.
The retarder embodiment test result of the invention of table 1
2 comparative test test result of table
Comparative example one~tri-: it is mixed outside chemical set-retarders, ratio of water to material is 0.60.Chemical set-retarders addition content is small, but at
This height is big to the intensity effect of test block.
The specific surface area of quartz sand powder in comparative example four, five is 462m2/ kg, ratio of water to material are 0.59.
The effect of above embodiments indicates that essentiality content of the invention, but protection of the invention is not limited with this
Range.Those skilled in the art should understand that can with modification or equivalent replacement of the technical solution of the present invention are made,
Without departing from the essence and protection scope of technical solution of the present invention.
Claims (6)
1. a kind of β semi-hydrated gypsum retarder, it is characterised in that: by weight, by 1 ~ 6 part of zeolite powder, 3 ~ 12 parts of metallurgical slag
Powder and 1 ~ 2 part of cement composition；The metallurgy ground-slag is manganese slag, steel slag, any one or any combination in slag.
2. a kind of β semi-hydrated gypsum retarder according to claim 1, it is characterised in that: by weight, by 2 parts of zeolite
Powder, 4 parts of metallurgical ground-slag and 2 parts of cement composition, wherein it is 4:5 that the group of metallurgical ground-slag, which becomes the ratio between manganese slag, steel slag, slag:
3。
3. a kind of β semi-hydrated gypsum retarder according to claim 1 or 2, it is characterised in that: the ratio table of the metallurgy ground-slag
Area is 450 ~ 550m2/kg。
4. a kind of β semi-hydrated gypsum retarder according to claim 3, it is characterised in that: the grain fineness of the zeolite powder
More than 200 mesh.
5. a kind of β semi-hydrated gypsum retarder according to claim 4, it is characterised in that: the cement is " common Portland
Any one of cement " GB175-2007.
6. a kind of preparation method of β semi-hydrated gypsum retarder as described in claim 1, the specific steps are as follows:
(1) metallurgical slag is dried respectively, carries out grinding after proportionally measuring；
(2) zeolite powder, metallurgical ground-slag and cement are mixed and made into retarder in proportion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710153287.5A CN106866015B (en) | 2017-03-15 | 2017-03-15 | A kind of β semi-hydrated gypsum retarder and preparation method thereof |
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| CN201710153287.5A CN106866015B (en) | 2017-03-15 | 2017-03-15 | A kind of β semi-hydrated gypsum retarder and preparation method thereof |
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| CN106866015A CN106866015A (en) | 2017-06-20 |
| CN106866015B true CN106866015B (en) | 2019-02-26 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108558251B (en) * | 2018-02-06 | 2020-11-06 | 河北科技大学 | Method for adjusting setting time of gypsum material |
| CN109160760B (en) * | 2018-10-16 | 2021-08-03 | 河北科技大学 | Preparation method of plastering gypsum retarder |
| CN109836112A (en) * | 2019-02-27 | 2019-06-04 | 河北科技大学 | A kind of inner wall of building lightweight plastering gupsum |
| CN110204237B (en) * | 2019-06-28 | 2022-04-05 | 贵州川恒化工股份有限公司 | Production method of cement retarder |
| CN111138105B (en) * | 2020-01-17 | 2021-11-05 | 河北科技大学 | Method for adjusting setting time of beta-hemihydrate gypsum |
| CN114180877B (en) * | 2022-02-17 | 2022-05-20 | 河北科技大学 | Alkali-resistant gypsum retarder and preparation method thereof |
| CN115286346B (en) * | 2022-08-30 | 2023-04-07 | 中冶南方都市环保工程技术股份有限公司 | Method for adjusting setting time of high-strength full-solid waste cementing material |
| CN116102286B (en) * | 2022-12-14 | 2024-04-09 | 山东华诚高科胶粘剂有限公司 | Gypsum retarder and preparation method thereof |
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| CN101182140A (en) * | 2007-11-02 | 2008-05-21 | 浙江工业大学 | Super slow-setting cement |
| CN102674736A (en) * | 2012-05-09 | 2012-09-19 | 上海大学 | Preparation method of desulfurization building gypsum retarder |
| CN102701638A (en) * | 2012-06-01 | 2012-10-03 | 河北科技大学 | Novel gypsum retarder and preparation method thereof |
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|---|---|---|---|---|
| CN101182140A (en) * | 2007-11-02 | 2008-05-21 | 浙江工业大学 | Super slow-setting cement |
| CN102674736A (en) * | 2012-05-09 | 2012-09-19 | 上海大学 | Preparation method of desulfurization building gypsum retarder |
| CN102701638A (en) * | 2012-06-01 | 2012-10-03 | 河北科技大学 | Novel gypsum retarder and preparation method thereof |
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| Study on Gypsum Plasters with Modified Waste Mycelium as Retarder;Liang, JC et al.;《ACSR-Advances in Comptuer Science Research》;20151231;第13卷;2251-2258 |
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