CN106365489A - Retarder for desulfurization building gypsum - Google Patents
Retarder for desulfurization building gypsum Download PDFInfo
- Publication number
- CN106365489A CN106365489A CN201610774609.3A CN201610774609A CN106365489A CN 106365489 A CN106365489 A CN 106365489A CN 201610774609 A CN201610774609 A CN 201610774609A CN 106365489 A CN106365489 A CN 106365489A
- Authority
- CN
- China
- Prior art keywords
- retarder
- building gypsum
- gypsum
- citric acid
- desulfurization
- 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.)
- Pending
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
- 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
-
- 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 invention relates to a retarder for desulfurization building gypsum. The retarder for the desulfurization building gypsum is made of raw material by proportion: 20-30% of citric acid, 10-15% of tetrapotassium pyrophosphate, 2-5% of sodium alkyl sulfate and 50-68% of edible salt. The retarder for the desulfurization building gypsum is a retarder which is obtained by using the citric acid, the tetrapotassium pyrophosphate and the sodium alkyl sulfate as main coagulation delaying ingredients and adding the edible salt, contains few additives, is good in retarding effect, and simultaneously causes little loss to strength of the gypsum.
Description
Technical field
The present invention relates to a kind of desulphurization building gypsum retarder.
Background technology
Desulfurated plaster is the solid waste of generation after coal fired power plant flue gas desulfurization, can be made into de- after dehydration and calcining
Sulfur plaster of Paris, its technical specification can reach the requirement of national standard, and wherein anti-folding, comprcssive strength are respectively higher than national standard and build
Build the required value of Gypsum Fibrosum intensity, be the plaster of Paris of high-quality, can be as the raw material of multiple plasterings, however, gypsum material
Early strength development fast, it is short to condense firm time, and more than ten minutes or even a few minutes will lose flowability, especially in preparation bubble
The best fit time of other raw materials affecting foam in foam building block is it is impossible to meet construction requirement.In order to overcome this not enough, lead to
Often need to fill retarder to adjust setting time.But retarder, while there is deferred action, can cause to Gypsum Fibrosum intensity
Different degrees of loss, limits the popularization and application of building materials of gypsum to a certain extent.Although there being some slow with regard to how to reduce
The research that solidifying agent negatively affects to Gypsum Fibrosum intensity, but fundamentally do not solve this problem.
Content of the invention
It is an object of the invention to provide a kind of addition is few, retarding effect is good, simultaneously less to Gypsum Fibrosum loss of strength
Desulphurization building gypsum retarder.Desulfurated plaster is widely used in building trade so that desulfurated plaster this
Plant solid waste and obtain more preferable disposal of resources.
A kind of desulphurization building gypsum retarder, composition and weight proportion are as follows:
Citric acid 20-30%, tetrapotassium pyrophosphate 10%-15%, alkyl sodium sulfate 2%-5%, edible salt 50%-68%.
Further, a kind of desulphurization building gypsum retarder, composition and weight proportion are as follows:
Citric acid 30%, tetrapotassium pyrophosphate 10%, alkyl sodium sulfate 5%, edible salt 55%.
Weigh dispensing respectively by above-mentioned formula, be sequentially placed in mixer, be adequately mixed uniformly, obtain final product desulfurization paring stone
Cream retarder, during use, the setting retarder of building gypsum measuring is put in a container, adds appropriate water, is sufficiently stirred for
Uniformly, the no granular material to slurry, stands 5 minutes, is again stirring for uniformly, you can use.
The calcium sulphate retarder of present invention preparation is a kind of retarder for desulphurization building gypsum, and it has a characteristic that
1. there is stronger retarding effect, can significantly extend the Slow setting time of desulphurization building gypsum.
2. the loss of strength of pair desulphurization building gypsum is less.
3. consumption is few, low cost.
The present invention provides a kind of excellent retarder for industrial solid castoff desulfurated plaster, thus can make this
Solid waste is widely utilized.
Specific embodiment
After now the specific embodiment of the present invention being described in.
Embodiment
Taking prepare 100 g retarder as a example, its preparation method is as follows for the present embodiment.
Citric acid 30%, tetrapotassium pyrophosphate 10%, alkyl sodium sulfate 5%, edible salt 55%.
Above-mentioned various raw materials are put in mixer, after being adequately mixed uniformly, obtains final product desulphurization building gypsum retarder.
Suitable quantity of water is added to be in harmonious proportion uniformly during use.The retarder preparing has stronger retarding effect, can significantly extend
The Slow setting time of desulphurization building gypsum.Loss of strength to desulphurization building gypsum is less.Consumption is few, low cost.
Due to the present invention being described by above preferred embodiment, in the spirit and/or scope of the present invention, any it is directed to
The replacement/of the present invention or combination, to implement the present invention, will be apparent from for a person skilled in the art, and comprise
Among the present invention.
Claims (2)
1. a kind of desulphurization building gypsum retarder is it is characterised in that the composition of this retarder and weight proportion are as follows:
Citric acid 20-30%, tetrapotassium pyrophosphate 10%-15%, alkyl sodium sulfate 2%-5%, edible salt 50%-68%.
2. the desulphurization building gypsum retarder as described according to claim 1 it is characterised in that the composition of this retarder and
Weight proportion is as follows: citric acid 30%, tetrapotassium pyrophosphate 10%, alkyl sodium sulfate 5%, edible salt 55%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774609.3A CN106365489A (en) | 2016-08-31 | 2016-08-31 | Retarder for desulfurization building gypsum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610774609.3A CN106365489A (en) | 2016-08-31 | 2016-08-31 | Retarder for desulfurization building gypsum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106365489A true CN106365489A (en) | 2017-02-01 |
Family
ID=57902053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610774609.3A Pending CN106365489A (en) | 2016-08-31 | 2016-08-31 | Retarder for desulfurization building gypsum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106365489A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108929063A (en) * | 2018-07-28 | 2018-12-04 | 万玉梅 | A kind of preparation method of calcium sulphate retarder |
-
2016
- 2016-08-31 CN CN201610774609.3A patent/CN106365489A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108929063A (en) * | 2018-07-28 | 2018-12-04 | 万玉梅 | A kind of preparation method of calcium sulphate retarder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20170201 |