CN105753356A - Set retarder used for desulphurized building gypsum, and preparation method thereof - Google Patents
Set retarder used for desulphurized building gypsum, and preparation method thereof Download PDFInfo
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- CN105753356A CN105753356A CN201410776168.1A CN201410776168A CN105753356A CN 105753356 A CN105753356 A CN 105753356A CN 201410776168 A CN201410776168 A CN 201410776168A CN 105753356 A CN105753356 A CN 105753356A
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- gypsum
- set retarder
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Abstract
The invention relates to a set retarder used for desulphurized building gypsum, and a preparation method thereof. The set retarder is prepared from, by weight, 25-35 parts of acetylene sludge, 20-30 parts of anhydrous sodium sulfate, 10-20 parts of gypsum, 25-35 parts of a calcium increasing agent, and 10-20 parts of fly ash. Compared with the prior art, the method provided by the invention has the advantages of omitting of the calcining balling process, convenience for processing phosphogypsum, and substantial improvement of the 28d compressive strength of cement, so the mixing amount of a mixture in cement can be improved under a same cement strength value, and economic benefits are brought for cement enterprises.
Description
Technical field
The present invention relates to a kind of magnesite binding material modifying agent, particularly relate to a kind of retarder for desulphurization building gypsum and preparation method thereof.
Background technology
One of most important design parameter of cementing job is the thickening time.It is generally the time that cement mortar keeps liquid, pumpable state, is therefore the effective time implementing cementing job.When with suitable ratio of mud mixture, by the degree of depth that can be safely injected into about 1800 meters without extended slurry of G class g cement preparation.Along with the rising of temperature, the hydration rate of cement is also accelerated.Therefore at a higher temperature, retarder is used to slow down hydration rate, makes cement mortar keep pumpable state.Along with bottom-hole circulating temperature increases, the performance of these retarder becomes crucial.
Summary of the invention
The task of the present invention is in that the defect for overcoming above-mentioned prior art to exist provides one can effectively delay its slurry presetting period, improves a kind of retarder for desulphurization building gypsum of article water resistance and preparation method thereof.
A kind of retarder for desulphurization building gypsum and preparation method thereof, it is that to adopt carbide slag, anhydrous sodium sulfate, Gypsum Fibrosum calcium increasing agent be raw material, and the percentage by weight shared in gross weight of each raw material is respectively as follows: carbide slag 25 35 parts, anhydrous sodium sulfate 20 30 parts, 10 20 parts of Gypsum Fibrosum, calcium increasing agent 25 35 parts, 10 20 parts of flyash.
The present invention compared with prior art provides the benefit that, eliminate calcining balling-up operation, it is easy to ardealite processed, considerably improve 28 days compression strength values of cement, thus when being intended to the strength of cement value maintained like, the addition content of composite material in cement can be improved, bring economic benefit for cement production enterprise.
Detailed description of the invention
Embodiment one
A kind of retarder for desulphurization building gypsum and preparation method thereof, be by weight in account for: carbide slag 30 parts, anhydrous sodium sulfate 25 parts, 15 parts of Gypsum Fibrosum, calcium increasing agent 30 parts, 15 parts of flyash.
Embodiment two
A kind of retarder for desulphurization building gypsum and preparation method thereof, be by weight in account for: carbide slag 25 parts, anhydrous sodium sulfate 20 parts, 10 parts of Gypsum Fibrosum, calcium increasing agent 25 parts, 10 parts of flyash.
Embodiment three
A kind of retarder for desulphurization building gypsum and preparation method thereof, be by weight in account for: carbide slag 35 parts, anhydrous sodium sulfate 30 parts, 20 parts of Gypsum Fibrosum, calcium increasing agent 35 parts, 20 parts of flyash.
Claims (2)
1. retarder for desulphurization building gypsum and preparation method thereof, it is that to adopt carbide slag, anhydrous sodium sulfate, Gypsum Fibrosum, calcium increasing agent be raw material, it is characterised in that each raw material percentage by weight in gross weight respectively carbide slag 25 35 parts, anhydrous sodium sulfate 20 30 parts, 10 20 parts of Gypsum Fibrosum, calcium increasing agent 25 35 parts, 10 20 parts of flyash.
2. a kind of retarder for desulphurization building gypsum according to claim 1 and preparation method thereof, it is characterised in that by each raw material by adding carbide slag 30 parts, anhydrous sodium sulfate 25 parts, 15 parts of Gypsum Fibrosum, calcium increasing agent 30 parts, 15 parts of flyash after its percentage scale.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410776168.1A CN105753356A (en) | 2014-12-17 | 2014-12-17 | Set retarder used for desulphurized building gypsum, and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410776168.1A CN105753356A (en) | 2014-12-17 | 2014-12-17 | Set retarder used for desulphurized building gypsum, and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105753356A true CN105753356A (en) | 2016-07-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410776168.1A Pending CN105753356A (en) | 2014-12-17 | 2014-12-17 | Set retarder used for desulphurized building gypsum, and preparation method thereof |
Country Status (1)
| Country | Link |
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| CN (1) | CN105753356A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107082587A (en) * | 2017-05-18 | 2017-08-22 | 河北科技大学 | A kind of preparation method of calcium sulphate retarder |
-
2014
- 2014-12-17 CN CN201410776168.1A patent/CN105753356A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107082587A (en) * | 2017-05-18 | 2017-08-22 | 河北科技大学 | A kind of preparation method of calcium sulphate retarder |
| CN107082587B (en) * | 2017-05-18 | 2019-04-19 | 河北科技大学 | 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 |
Application publication date: 20160713 |
|
| WD01 | Invention patent application deemed withdrawn after publication |