CN103588409A - Desulfurization building gypsum delayed coagulant and preparation method thereof - Google Patents
Desulfurization building gypsum delayed coagulant and preparation method thereof Download PDFInfo
- Publication number
- CN103588409A CN103588409A CN201310541410.2A CN201310541410A CN103588409A CN 103588409 A CN103588409 A CN 103588409A CN 201310541410 A CN201310541410 A CN 201310541410A CN 103588409 A CN103588409 A CN 103588409A
- Authority
- CN
- China
- Prior art keywords
- retardant
- delayed
- building gypsum
- gypsum
- calcium
- 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.)
- Granted
Links
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 27
- 239000010440 gypsum Substances 0.000 title claims abstract description 27
- 230000003111 delayed effect Effects 0.000 title abstract description 8
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 238000006477 desulfuration reaction Methods 0.000 title abstract description 4
- 230000023556 desulfurization Effects 0.000 title abstract description 4
- 239000000701 coagulant Substances 0.000 title abstract 5
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 9
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 9
- 239000011575 calcium Substances 0.000 claims abstract description 9
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims abstract description 7
- 238000002156 mixing Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 7
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 5
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 2
- 239000000920 calcium hydroxide Substances 0.000 claims description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 2
- 239000004567 concrete Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000002994 raw material Substances 0.000 abstract description 8
- 230000015271 coagulation Effects 0.000 abstract description 4
- 238000005345 coagulation Methods 0.000 abstract description 4
- 239000012744 reinforcing agent Substances 0.000 abstract 3
- BJEPYKJPYRNKOW-REOHCLBHSA-N (S)-malic acid Chemical compound OC(=O)[C@@H](O)CC(O)=O BJEPYKJPYRNKOW-REOHCLBHSA-N 0.000 abstract 2
- 239000004471 Glycine Substances 0.000 abstract 2
- BJEPYKJPYRNKOW-UHFFFAOYSA-N alpha-hydroxysuccinic acid Natural products OC(=O)C(O)CC(O)=O BJEPYKJPYRNKOW-UHFFFAOYSA-N 0.000 abstract 2
- 235000011090 malic acid Nutrition 0.000 abstract 2
- 239000001630 malic acid Substances 0.000 abstract 2
- 230000000694 effects Effects 0.000 abstract 1
- 239000011505 plaster Substances 0.000 description 7
- 239000004566 building material Substances 0.000 description 6
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Inorganic materials [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 4
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 239000002910 solid waste Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- ZOMBKNNSYQHRCA-UHFFFAOYSA-J calcium sulfate hemihydrate Chemical compound O.[Ca+2].[Ca+2].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O ZOMBKNNSYQHRCA-UHFFFAOYSA-J 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000011507 gypsum plaster Substances 0.000 description 2
- 230000000979 retarding effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000002742 anti-folding effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 description 1
- 239000001175 calcium sulphate Substances 0.000 description 1
- 235000011132 calcium sulphate Nutrition 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Abstract
The invention relates to a desulfurization building gypsum delayed coagulant and a preparation method thereof. The delayed coagulant comprises the raw materials by weight ratio: 10% of malic acid, 20-30% of glycine, 20-30% of ethylene diamine tetraacetic acid disodium salt and 30-50% of a calcium reinforcing agent. The desulfurization gypsum delayed coagulant adopts malic acid, glycine and ethylene diamine tetraacetic acid disodium salt as main delayed coagulation components and the calcium reinforcing agent as a modified reinforcing agent to prepare the delayed coagulant having little addition, good delayed coagulation effect and smaller loss of the gypsum strength.
Description
Technical field
The present invention relates to a kind of desulphurization building gypsum retardant and preparation method thereof.
Background technology
Desulfurated plaster is the solid waste producing after coal fired power plant flue gas desulfurization.At present, the processing of China's desulfurated plaster and comprehensive utilization and World Developed Countries also have a certain distance, and except part is for cement setting retarder and building materials of gypsum, major part still, still by air storage, has now become the second largest solid waste of power plants.This has not only taken the land resources of a large amount of preciousnesses, but also has caused serious pollution to surrounding enviroment.On the contrary, desulfurated plaster can be made into desulphurization building gypsum after dehydration and calcining, the requirement that its technical indicator can be up to state standards, and wherein anti-folding, ultimate compression strength are respectively higher than the required value of national standard plaster of Paris intensity, be the plaster of Paris of high-quality, can be used as the raw material of multiple plastering.Meanwhile, building materials of gypsum, compared to traditional material of construction not only low price but also low-carbon environment-friendly, is relatively to praise highly at present " green building material " using both at home and abroad.Therefore, in order to protect natural resource and to reduce environmental pollution, China's building materials industry planning explicitly points out, actively utilize the industrial residues such as desulfurated plaster, phosphogypsum, fluorgypsum, and energy-conserving profit waste, greatly develops " green building material ".
Yet the development of the early strength of gypsum material is fast, the setting and harden time is short, tens minutes even several minutes will lose flowability, can not meet construction requirement.In order to overcome this deficiency, conventionally need admixture retardant to regulate time of coagulation.But retardant, when there is delayed coagulation, can cause loss in various degree to gypsum intensity, has limited to a certain extent applying of building materials of gypsum.Although having some about how reducing the research of retardant to the negative impact of gypsum intensity, fundamentally not addressing this problem.
Summary of the invention
One of object of the present invention is to provide that a kind of addition is few, retarding effect good, simultaneously the desulphurization building gypsum retardant less to gypsum loss of strength.Desulfurated plaster can be widely used in building trade, thereby make this solid waste of desulfurated plaster obtain better disposal of resources.
Two of object of the present invention is to provide the preparation method of this retardant.
A retardant, is characterized in that the composition of this retardant and weight proportion are as follows:
Oxysuccinic acid 10% Padil 20-30%
Disodium ethylene diamine tetraacetate 20-30% calcium increasing agent 30-50%
Described calcium increasing agent mixes by calcium oxide, calcium hydroxide and a small amount of calcium carbonate a kind of active filler forming, and fineness is 325 orders.
An above-mentioned desulphurization building gypsum retardant, is characterized in that the concrete steps of the method are: according to above-mentioned formula difference weigh batching, put into successively mixing machine, through fully mixing, obtain desulphurization building gypsum retardant
During use, the setting retarder of building gypsum measuring is put into a container, adds appropriate water, stir, in slurry without pulverulent material, standing 5 minutes, again stir, can use.
Calcium sulphate retarder prepared by the present invention is a kind of retardant for desulphurization building gypsum, and it has following features:
1. there is stronger retarding effect, the slow setting time that can significant prolongation desulphurization building gypsum.
2. the loss of strength of pair desulphurization building gypsum is less.
3. consumption is few, and cost is low.
The present invention is industrial solid castoff---desulfurated plaster provides a kind of good retardant, thereby can make this solid waste be utilized widely.
Embodiment
After now specific embodiments of the invention being described in.
Embodiment 1
The present embodiment take that to prepare 100 g retardant be example, and its preparation method is as follows.
Proportioning weigh batching in accordance with regulations, the consumption of each raw material is:
Oxysuccinic acid 10 g Padil 30 g
Disodium ethylene diamine tetraacetate 30 g calcium increasing agent 30 g
Above-mentioned various raw materials are put into mixing machine, after fully mixing, obtain desulphurization building gypsum retardant.During use, add suitable quantity of water to be in harmonious proportion evenly.Above-mentioned retardant, slow setting time >=190min, ultimate compression strength loss≤39%.
Embodiment 2
The present embodiment take that to prepare 100 g retardant be example, and its preparation method is as follows.
Proportioning weigh batching in accordance with regulations, the consumption of each raw material is:
Oxysuccinic acid 10 g Padil 30 g
Disodium ethylene diamine tetraacetate 20 g calcium increasing agent 40 g
Above-mentioned various raw materials are put into mixing machine, after fully mixing, obtain desulphurization building gypsum retardant.During use, add suitable quantity of water to be in harmonious proportion evenly.Above-mentioned retardant, slow setting time >=190min, ultimate compression strength loss≤37%.
Embodiment 3
The present embodiment take that to prepare 100 g retardant be example, and its preparation method is as follows.
Proportioning weigh batching in accordance with regulations, the consumption of each raw material is:
Oxysuccinic acid 10 g Padil 20 g
Disodium ethylene diamine tetraacetate 20 g calcium increasing agent 50 g
Above-mentioned various raw materials are put into mixing machine, after fully mixing, obtain desulphurization building gypsum retardant.During use, add suitable quantity of water to be in harmonious proportion evenly.Above-mentioned retardant, slow setting time >=190min, ultimate compression strength loss≤38%.
Claims (2)
1. a desulphurization building gypsum retardant, is characterized in that the composition of this retardant and weight proportion are as follows:
Oxysuccinic acid 10% Padil 20-30%
Disodium ethylene diamine tetraacetate 20-30% calcium increasing agent 30-50%
Described calcium increasing agent mixes by calcium oxide, calcium hydroxide and a small amount of calcium carbonate a kind of active filler forming, and fineness is 325 orders.
2. prepare a desulphurization building gypsum retardant according to claim 1, it is characterized in that the concrete steps of the method are: according to above-mentioned formula difference weigh batching, put into successively mixing machine, through fully mixing, obtain desulphurization building gypsum retardant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541410.2A CN103588409B (en) | 2013-11-06 | 2013-11-06 | Desulphurization building gypsum retardant and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541410.2A CN103588409B (en) | 2013-11-06 | 2013-11-06 | Desulphurization building gypsum retardant and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103588409A true CN103588409A (en) | 2014-02-19 |
| CN103588409B CN103588409B (en) | 2016-04-06 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310541410.2A Active CN103588409B (en) | 2013-11-06 | 2013-11-06 | Desulphurization building gypsum retardant and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103588409B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291731A (en) * | 2014-09-26 | 2015-01-21 | 成都上筑建材有限公司 | Building plaster retarder as well as preparation method and application thereof |
| CN106699090A (en) * | 2016-11-16 | 2017-05-24 | 上海漕源新型建材有限公司 | Interior wall dry powder mortar |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101990525A (en) * | 2008-04-10 | 2011-03-23 | Sika技术股份公司 | Setting retarder for hydraulically hardening compounds |
| CN102674736A (en) * | 2012-05-09 | 2012-09-19 | 上海大学 | Preparation method of desulfurization building gypsum retarder |
-
2013
- 2013-11-06 CN CN201310541410.2A patent/CN103588409B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101990525A (en) * | 2008-04-10 | 2011-03-23 | Sika技术股份公司 | Setting retarder for hydraulically hardening compounds |
| CN102674736A (en) * | 2012-05-09 | 2012-09-19 | 上海大学 | Preparation method of desulfurization building gypsum retarder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104291731A (en) * | 2014-09-26 | 2015-01-21 | 成都上筑建材有限公司 | Building plaster retarder as well as preparation method and application thereof |
| CN104291731B (en) * | 2014-09-26 | 2019-09-10 | 成都上筑建材有限公司 | A kind of setting retarder of building gypsum, preparation method and application |
| CN106699090A (en) * | 2016-11-16 | 2017-05-24 | 上海漕源新型建材有限公司 | Interior wall dry powder mortar |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103588409B (en) | 2016-04-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20161025 Address after: 201804 Shanghai city Jiading District Xie Road No. 1000 Patentee after: Shanghai Yupei Special Building Material Co.,Ltd. Address before: 201804 Shanghai city Jiading District Xie Road No. 1000 Patentee before: Shanghai Yupei Special Building Material Co.,Ltd. Patentee before: Shanghai University |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180816 Address after: 201804 J227 8, No. 1112, hang Gui Road, Anting Town, Jiading District, Shanghai. Patentee after: SHANGHAI FODEV NEW MATERIAL TECHNOLOGY CO.,LTD. Address before: 201804 Xie Chun Road, Jiading District, Shanghai 1000 Patentee before: Shanghai Yupei Special Building Material Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Building 3, No. 75 Hengle Road, Waigang Town, Jiading District, Shanghai, June 2018 Patentee after: Shanghai fupei New Material Technology Co.,Ltd. Address before: 201804 J227 8, No. 1112, hang Gui Road, Anting Town, Jiading District, Shanghai. Patentee before: SHANGHAI FODEV NEW MATERIAL TECHNOLOGY CO.,LTD. |