CN103588409B - Desulphurization building gypsum retardant and preparation method thereof - Google Patents
Desulphurization building gypsum retardant and preparation method thereof Download PDFInfo
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- CN103588409B CN103588409B CN201310541410.2A CN201310541410A CN103588409B CN 103588409 B CN103588409 B CN 103588409B CN 201310541410 A CN201310541410 A CN 201310541410A CN 103588409 B CN103588409 B CN 103588409B
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- China
- Prior art keywords
- retardant
- building gypsum
- desulphurization building
- calcium
- gypsum
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- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 28
- 239000010440 gypsum Substances 0.000 title claims abstract description 28
- 238000002360 preparation method Methods 0.000 title abstract description 8
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 10
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-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
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000002253 acid Substances 0.000 claims abstract description 7
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims abstract description 6
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims description 10
- 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 description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- 238000000034 method Methods 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
- 239000002994 raw material Substances 0.000 abstract description 8
- 230000000979 retarding effect Effects 0.000 abstract description 3
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 abstract 3
- 238000012986 modification Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 abstract 1
- 238000005728 strengthening Methods 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
- 230000015271 coagulation Effects 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000011507 gypsum plaster Substances 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
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 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
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention relates to a kind of desulphurization building gypsum retardant and preparation method thereof, its proportioning raw materials is: oxysuccinic acid 10%, Padil 20-30%, disodium ethylene diamine tetraacetate 20-30%, calcium increasing agent 30-50%.This desulphurization building gypsum retardant is main slow setting composition with oxysuccinic acid, Padil, ethylenediamine tetraacetic acid (EDTA), and calcium increasing agent is that a kind of addition prepared by modification strengthening agent is few, retarding effect good, simultaneously less to gypsum loss of strength retardant.
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 produced after coal fired power plant flue gas desulfurization.At present, the process of China's desulfurated plaster and comprehensive utilization also have a certain distance with World Developed Countries, and except part is used 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 not only occupies a large amount of valuable land resources, but also causes serious pollution to surrounding enviroment.On the contrary, desulfurated plaster can be made into desulphurization building gypsum, the requirement that its technical indicator can be up to state standards after dehydration and calcining, and wherein anti-folding, ultimate compression strength are respectively higher than the required value of national standard plaster of Paris intensity, the plaster of Paris of high-quality, can 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 compare both at home and abroad at present to praise highly to use " green building material ".Therefore, in order to protect natural resource and reduce environmental pollution, China's building materials industry planning explicitly points out, and will actively utilize the industrial residues such as desulfurated plaster, phosphogypsum, fluorgypsum, energy-conserving profit waste, greatly develops " green building material ".
But the development of the early strength of gypsum material is fast, and the setting and harden time is short, tens minutes even several minutes will lose flowability, can not construction requirement be met.Not enough in order to overcome this, usually need admixture retardant to regulate time of coagulation.But retardant is while generation delayed coagulation, loss in various degree can be caused to gypsum intensity, limit applying of building materials of gypsum to a certain extent.Although have some about how reducing the research of retardant to the negative impact of gypsum intensity, fundamentally do not address this problem.
Summary of the invention
An object of the present invention is to provide that a kind of addition is few, retarding effect good, simultaneously less to gypsum loss of strength desulphurization building gypsum retardant.Desulfurated plaster can be widely used in building trade, thus make this solid waste of desulfurated plaster obtain better disposal of resources.
Two of object of the present invention is the preparation method providing this retardant.
A kind of desulphurization building gypsum retardant, it is characterized in that the composition of this retardant and weight proportion 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 formed, and fineness is 325 orders.
Prepare an above-mentioned desulphurization building gypsum retardant, it is characterized in that the concrete steps of the method are: according to above-mentioned formula weigh batching respectively, putting into mixing machine successively, through fully mixing, obtaining desulphurization building gypsum retardant
During use, the setting retarder of building gypsum measured is put into a container, add appropriate water, stir, without pulverulent material to slurry, leave standstill 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, can slow setting time of 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 excellent retardant, thus this solid waste can be made to be utilized widely.
Embodiment
After now specific embodiments of the invention being described in.
Embodiment 1
The present embodiment is to prepare 100g retardant, and its preparation method is as follows.
By regulation proportioning weigh batching, the consumption of each raw material is:
Oxysuccinic acid 10g Padil 30g
Disodium ethylene diamine tetraacetate 30g calcium increasing agent 30g
Above-mentioned various raw material is put into mixing machine, after fully mixing, obtains desulphurization building gypsum retardant.Add suitable quantity of water during use to be in harmonious proportion evenly.Above-mentioned retardant, slow setting time >=190min, ultimate compression strength loss≤39%.
Embodiment 2
The present embodiment is to prepare 100g retardant, and its preparation method is as follows.
By regulation proportioning weigh batching, the consumption of each raw material is:
Oxysuccinic acid 10g Padil 30g
Disodium ethylene diamine tetraacetate 20g calcium increasing agent 40g
Above-mentioned various raw material is put into mixing machine, after fully mixing, obtains desulphurization building gypsum retardant.Add suitable quantity of water during use to be in harmonious proportion evenly.Above-mentioned retardant, slow setting time >=190min, ultimate compression strength loss≤37%.
Embodiment 3
The present embodiment is to prepare 100g retardant, and its preparation method is as follows.
By regulation proportioning weigh batching, the consumption of each raw material is:
Oxysuccinic acid 10g Padil 20g
Disodium ethylene diamine tetraacetate 20g calcium increasing agent 50g
Above-mentioned various raw material is put into mixing machine, after fully mixing, obtains desulphurization building gypsum retardant.Add suitable quantity of water during use 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, it is characterized in that the composition of this retardant and weight proportion 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 formed, and fineness is 325 orders.
2. prepare the method for desulphurization building gypsum retardant according to claim 1 for one kind, it is characterized in that the concrete steps of the method are: according to above-mentioned composition and proportioning weigh batching respectively, putting into mixing machine successively, through fully mixing, obtaining 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 |
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| 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 |
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| CN103588409A CN103588409A (en) | 2014-02-19 |
| CN103588409B true CN103588409B (en) | 2016-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310541410.2A Active CN103588409B (en) | 2013-11-06 | 2013-11-06 | Desulphurization building gypsum retardant and preparation method thereof |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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 |
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| CN103588409A (en) | 2014-02-19 |
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| 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 |
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. |
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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. |
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| CP03 | Change of name, title or address |