CN102190475A - Dihydrate desulfurized waterproof gypsum plaster for finish coating and production method thereof - Google Patents
Dihydrate desulfurized waterproof gypsum plaster for finish coating and production method thereof Download PDFInfo
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- CN102190475A CN102190475A CN201010122820XA CN201010122820A CN102190475A CN 102190475 A CN102190475 A CN 102190475A CN 201010122820X A CN201010122820X A CN 201010122820XA CN 201010122820 A CN201010122820 A CN 201010122820A CN 102190475 A CN102190475 A CN 102190475A
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- water
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- surface layer
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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
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
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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
- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
- C04B20/02—Treatment
- C04B20/026—Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to dihydrate desulfurized waterproof gypsum plaster for a finish coating and a production method thereof, namely gypsum plaster for a finish coating, which is prepared from solid waste of a heat power plant without calcination, and belongs to the technical fields of development of circular economy, change of waste into treasure and resource recycle. The dihydrate desulfurized waterproof gypsum plaster comprises the following components in percentage by weight: 65 to 75 percent of original state dihydrate desulfurized gypsum, 20 to 25 percent of volcanic active mineral material, 5 to 15 percent of exciting agent, 0.5 to 2 percent of coagulation accelerator, 0.1 to 0.4 percent of water-retaining agent and 1.5 to 2.0 percent of adhesive. The preparation method comprises the following steps of: drying or airing the dihydrate desulfurized gypsum, metering active, exciting, coagulation accelerator and other materials, the water-retaining agent and the adhesive, stirring and mixing; and packaging powder. The dihydrate desulfurized waterproof gypsum plaster is stirred into a paste material on site. The dihydrate desulfurized waterproof gypsum plaster has the advantages of high strength, high water resistance, low cost, long operating time and no retarder. The technology can greatly eliminate the solid waste, reduce second investment, secondary energy consumption and secondary pollution, and achieve obvious economic, ecologic and environmental benefits.
Description
Technical field
The invention belongs to industrial solid castoff, develop a circular economy, turn waste into wealth, the comprehensive utilization of resources technical field.Be specifically related to a kind of solid waste---desulfurated plaster that the fuel-burning power plant wet desulphurization is produced, without traditional technology means such as drying, calcining, grindings, and direct excitation principle by active material and exciting agent, carry out modification, adding admixture, processing becomes the water-fast surface layer brushing gypsum of two water desulfurization.
Background technology
China is the big country of thermal power generation in the world, and 2,500 ten thousand tons of the quantity dischargeds of annual SO2 are the first in the world.In order to reduce atmospheric pollution, country has taked mandatory desulfurization measure.2010, the quantity discharged of desulfurated plaster was 5,000 ten thousand tons.And present utilization ratio is less than 10%, and situation is very severe.Desulfurated plaster generally takes to abandon method, promptly land purchase stack, landfill, both increased the burden of enterprise's land purchase, cause again by to topsoil, in the face of water source, soil, people and animals' secondary pollution with transferring to.
Under the brute force of national recycling economy, the Scientific Outlook on Development and development low-carbon economy policy promotes, in order to address this problem, domestic many gypsum enterprise, comprise equipment manufacture industry, production and processing industries, follow traditional complete processing one after another, drop into ten million element device expense, carry out drying, calcining, grinding, display, produce the β semi-hydrated gypsum.And then, add various admixtures pointedly by coating processing enterprise, be mixed into the surface layer brushing gypsum.The problem of bringing one is: mechanical floor has high input, and complex process; The 2nd: secondary energy consumption, secondary pollution; The 3rd: product strength is low, poor water resistance, operable time short, and range of application is narrow; The 4th: cost height, quality instability are difficult to promote.
At present, in inspection information, do not check out similar or close application for a patent for invention.
Summary of the invention
Purpose of the present invention is to provide water-fast surface layer brushing gypsum of a kind of two water desulfurization and production method thereof.
This technology ultimate compression strength, folding strength height, water-tolerant, the coefficient of softening height, operable time is long, does not add retardant, and cost is low, and single stage method processing puts in place, and the desulfurated plaster amount of dissolving is big.
Water-fast surface layer brushing gypsum of a kind of two water desulfurization provided by the invention and production method thereof are by following weight, share raw material preparing: original state two water desulfurated plaster: 65-75%, pozzolanic activity mineral material: 20-25%, exciting agent material: 5-15%, short gel material: 0.5-2%, water-holding agent: 0.1-0.4%, binding agent: 1.5-2.0%.
The water-fast surface layer brushing gypsum of above-mentioned two water desulfurization, described two water desulfurated plasters are solid waste-desulfurated plaster that thermal power plant's Wingdale-the gypsum wet desulfurization is produced; Described pozzolanic activity material is flyash, blast furnace slag micro mist; Described excitation material is a calcium oxide, cement; Described setting accelerator is sodium sulfate, calcium formiate; Described water-holding agent material is hydroxypropyl methyl cellulose ether (Hpmc); Described binder material is polyvinyl alcohol (2488), redispersable latex powder.
The water-fast surface layer brushing gypsum of above-mentioned two water desulfurization preparation method, its step comprises:
The two water desulfurated plasters that 1, will newly produce, attached water greatly about about 30%, at first display 15d after, attached water is below 15%, dries or air-dry, enter storage tank or pack moistureproofly store, stand-by.
2, slag in the pozzolanic activity material and the calcium oxide in the excitation material, grinding enters storage tank or pack protection against the tide, stand-by to the 250-350 order respectively.
3, then with two water desulfurated plasters and pozzolanic activity material, the exciting agent material behind the grinding after air-dry or the oven dry, and setting accelerator, water-holding agent, binding agent mix by proportioning, metering, packs finished product.
4, the on-the-spot use with the water-fast surface layer brushing gypsum of mixed two water desulfurization, converted water by water consumption 1: 0.28-0.33 and stirred 5min, and the quiet 3min of putting stirs once more and can use.
Water-fast surface layer brushing gypsum of two water desulfurization disclosed by the invention and production method thereof show through laboratory repetition test and Shanghai Jian Keyuan examining report, anti-folding, resistance to compression, cohesive strength, coefficient of softening, final setting time, up to standard, and performance is all good.Its reaction mechanism: two water desulfurated plasters, belong to the air-setting material, itself do not have self-hardening property, gelling, but be a kind of exciting agent.Have only by the pozzolanic activity material, under the intervention of exciting agent, impel its modification, become gelling material.Under the mechanism of this active material and exciting agent material modification, added pozzolanic activity material and alkaline excitation material, in the presence of water, fully carry out hydration reaction.Ettringite (AFt) and hydrated calcium silicate (C-S-H) gelling have been generated.The former round not fully the dihydrate gypsum of aquation form real, compact, skeleton structure uniformly.And latter's hydrated calcium silicate gelling material, cross-lapping fills among it, forms whole.Making it to generate has sufficient amount, and crystal shape is reasonable, the hydrated product of compact construction, and intensity and water resistance are greatly improved.The variation of matter has taken place in material, and the rigid and hydraulicity advantage of gas collection.
The water-fast surface layer brushing gypsum of two water desulfurization disclosed by the invention, every index surpasses JC/T517-2004 " brushing gypsum " standard-required, detect through Shanghai Jian Keyuan: folding strength: 3.6mpa (standard: 3.0mpa), ultimate compression strength: 16mpa (standard: 6.0mpa), cohesive strength: 0.6mpa (standard: 0.4mpa), coefficient of softening: 0.65 (standard: do not have), final setting time: 6H (standard≤8H).The utilization ratio of two water desulfurated plasters reaches 75-80% among the present invention, the desulfurated plaster of dissolving in a large number.This has far-reaching economy, society, environmental protection, ecological significance for saving plaster of paris resource, maintenance ecology, saving land resources, save energy, minimizing pollution.
Embodiment
Below in conjunction with example, the present invention will be further described in detail.
The present invention is to provide the water-fast surface layer brushing gypsum of a kind of two water desulfurization, and production method.Its component and weight percent are:
Original state two water desulfurated plaster: 65-75%
Pozzolanic activity mineral material: 20-25%
Exciting agent material: 5-15%
Setting accelerator material: 0.5-2.0%
Water-holding agent material: 0.1-0.4%
Binder material: 1.5-2.0%
Above-described original state two water desulfurated plasters are: thermal power plant's Wingdale---gypsum, the solid waste that wet desulphurization produced---desulfurated plaster; Described pozzolanic activity mineral material is: II level flyash, blast furnace slag micro mist; Described excitation material is: calcium oxide, cement; Described setting accelerator is: sodium sulfate, calcium formiate; Described water-holding agent is: hydroxypropyl methyl cellulose ether, viscosity 40,000; Described binding agent is polyvinyl alcohol (2488), redispersable latex powder.
The preparation method of the present invention's two water desulfurization water-resistant plastering gypsums is:
The two water desulfurated plasters that 1, will newly produce, attached water are about more than 30%, at first display 15d after, attached water is about below 15%, dries or air-dry, enters storage tank or packed storage, stand-by.
2, pozzolanic activity slag and exciting agent calcium oxide must at first be distinguished grinding to the 250-350 order, enter storage tank or packed stand-by.
3, then with two water desulfurated plasters after air-dry or the oven dry, with grinding to 250-350 purpose pozzolanic activity material, exciting agent material, and setting accelerator, water-holding agent, binding agent mix the pack finished product by proportioning, metering.
4, the on-the-spot use with the water-fast surface layer brushing gypsum of packed pulvis two water desulfurization, converted water by water consumption 1: 0.28-0.33 and stirred 5min, the quiet 3min of putting, and restir can use.
Embodiment one:
The raw material ratio of this example is:
Two water desulfurated plasters (oven dry or air-dry): 68.0%
Blast-furnace cinder micro-powder (350 order): 20.0%
Flyash (II level): 3.0%
Cement (42.5): 5.0%
Calcium oxide (350 order): 1.0%
Sodium sulfate: 1.0%
Hydroxypropyl methyl cellulose ether (40,000): 0.1%
Polyvinyl alcohol (2488): 0.2%
Redispersable latex powder (5044): 2.0%
Its production method is:
1, in advance two water desulfurated plasters are displayed, made its attached water about more than 30%, fall below 10%, oven dry or air-dry enters storage tank or packed storage, stand-by then.
2, active material slag, exciting agent material oxidation calcium are distinguished grinding to the 250-350 order, enter storage tank or pack stand-by.
3, oven dry or air-dry after two water desulfurated plasters, with grinding 250-350 purpose pozzolanic activity material slag micropowder, exciting agent material oxidation calcium, with II level flyash and setting accelerator sodium sulfate, water-holding agent hydroxypropyl methyl cellulose ether, binding agent polyvinyl alcohol, rubber powder 5044, in proportion, metering mixes, pack, i.e. finished product---the water-fast surface layer brushing gypsum of two water desulfurization.
4, the on-the-spot use convert water by water consumption 1: 0.28-0.33 and stir 5min, the quiet 3min of putting, row stirring again.
Embodiment two:
The proportioning raw materials of this example is:
Original state two water desulfurated plasters (oven dry or air-dry): 65.0%
Blast-furnace cinder micro-powder (595 order): 20.0%
Flyash (II level): 4.0%
Silicate cement (42.5): 7.0%
Calcium oxide (250-350 order): 2.0%
Sodium sulfate: 0.5%
Hydroxypropyl methyl cellulose ether (43): 0.2%
Polyvinyl alcohol (2488): 0.3%
Redispersable latex powder (5044): 1.0%
Production method of the present invention the steps include:
With oven dry or air-dry two water desulfurated plasters and grinding to 250-350 purpose pozzolanic activity slag micropowder, II level flyash, exciting agent calcium oxide, and exciting agent cement, setting accelerator sodium sulfate, water-holding agent, ether of cellulose, binding agent polyvinyl alcohol, rubber powder by proportioning, metering mix and form, the on-the-spot use, by water consumption (powder: water) 1: 0.28-0.33, stir 5min, the quiet 3min of putting, the stirring of going again can be used.
Embodiment three:
1, original state two water desulfurated plasters (oven dry or air-dry): 65.0%
Blast furnace slag micro mist (595 order): 22.0%
Silicate cement (42.5): 10.0%
Calcium oxide (250-350 order): 2.0%
Calcium formiate: 0.5%
Semi-annular jade pendant melamine water reducing agent: 0.3%
2, the mixed dry mash of filling a prescription on: 70.0%
Lime carbonate: 20.0%
Semi-hydrated gypsum powder: 5.0%
Sulphur aluminic acid cement: 5.0%
Vltra tears: 0.1%
Polyvinyl alcohol: 0.3%
Production method of the present invention is:
1, at first produces good 1. formulation material;
2, by 2. prescription processing mixing stirring;
3, on-the-spot water consumption is 1: 0.37, and wake up with a start and stir 5min, the quiet 3min of putting, the stirring of going again can be used;
This formulation cost is low, like 1/2 of other prescriptions.Examining report is: final setting time is: 6H, folding strength: 3.55mpa, ultimate compression strength: 11.0mpa, cohesive strength: 0.68, coefficient of softening: 0.66.
Claims (5)
1. water-fast surface layer brushing gypsum of two water desulfurization and production method thereof, form by following share:
Original state two water desulfurated plaster: 65-75%
Pozzolanic activity mineral material: 20-25%
Excitation material: 5-15%
Short gel material: 0.5-2%
Water-holding agent: 0.1-0.4%
Binding agent: 1.5-2.0%
2. according to the water-fast surface layer brushing gypsum of claims 1 described two water desulfurization, it is characterized in that: described two water desulfurated plasters are the heat-engine plant wet desulfurization, the solid waste that is produced---desulfurated plaster.
3. according to the water-fast surface layer brushing gypsum of claims 1 described two water desulfurization, it is characterized in that: described pozzolanic activity mineral material is: blast-furnace cinder micro-powder, II level flyash; Described exciting agent is: calcium oxide, cement; Described setting accelerator material is: sodium sulfate, calcium formiate.
4. according to the water-fast surface layer brushing gypsum of claims 1 described two water desulfurization, it is characterized in that: described water-holding agent is: ether of cellulose, Vltra tears (Hpmc); Binding agent is: polyvinyl alcohol 2488, redispersable latex powder.
5. according to the water-fast surface layer brushing gypsum of claims 1 described two water desulfurization production method, the steps include:
1) will contain two water desulfurated plasters of 30-40% attached water, and take to display, oven dry or air-dry, enter storage tank or packed stand-by;
2) pozzolanic activity material slag and exciting agent calcium oxide powder are milled to the 250-350 order, enter storage tank respectively or pack stand-by;
3) active material, exciting agent and setting accelerator, water-holding agent, binding agent behind oven dry or the two air-dry water desulfurated plasters, last and grinding measure by proportioning and are mixed into powdery, pack stand-by;
When 4) using, water consumption is pressed: 1: 0.28-0.33, stir 5min, and the quiet 3min that stops, row stirs promptly available again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010122820XA CN102190475A (en) | 2010-03-12 | 2010-03-12 | Dihydrate desulfurized waterproof gypsum plaster for finish coating and production method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010122820XA CN102190475A (en) | 2010-03-12 | 2010-03-12 | Dihydrate desulfurized waterproof gypsum plaster for finish coating and production method thereof |
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| CN102190475A true CN102190475A (en) | 2011-09-21 |
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| CN201010122820XA Pending CN102190475A (en) | 2010-03-12 | 2010-03-12 | Dihydrate desulfurized waterproof gypsum plaster for finish coating and production method thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503334A (en) * | 2011-10-28 | 2012-06-20 | 南京工业大学 | Surface layer whitewash gypsum using dry-process desulfurized ash as raw material and preparation method thereof |
| CN102515682A (en) * | 2011-12-14 | 2012-06-27 | 中国平煤神马能源化工集团有限责任公司 | Method for preparing plastering anhydrite by using well and rock salt manufacturing brine anhydrite |
| CN106699089A (en) * | 2015-08-14 | 2017-05-24 | 美丽佳建材（北京）有限公司 | Novel energy-saving and environment-friendly waterproof plastering gypsum and preparation method thereof |
| CN107337415A (en) * | 2017-07-10 | 2017-11-10 | 合肥梵腾环保科技有限公司 | A kind of brushing gypsum and preparation method thereof |
| CN108751903A (en) * | 2018-08-27 | 2018-11-06 | 倍福德新型建材（江苏）有限公司 | A kind of water-fast finish coat gypsum mortar of novel high-efficiency environment friendly |
-
2010
- 2010-03-12 CN CN201010122820XA patent/CN102190475A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102503334A (en) * | 2011-10-28 | 2012-06-20 | 南京工业大学 | Surface layer whitewash gypsum using dry-process desulfurized ash as raw material and preparation method thereof |
| CN102503334B (en) * | 2011-10-28 | 2013-05-08 | 南京工业大学 | Surface layer whitewash gypsum using dry-process desulfurized ash as raw material and preparation method thereof |
| CN102515682A (en) * | 2011-12-14 | 2012-06-27 | 中国平煤神马能源化工集团有限责任公司 | Method for preparing plastering anhydrite by using well and rock salt manufacturing brine anhydrite |
| CN106699089A (en) * | 2015-08-14 | 2017-05-24 | 美丽佳建材（北京）有限公司 | Novel energy-saving and environment-friendly waterproof plastering gypsum and preparation method thereof |
| CN107337415A (en) * | 2017-07-10 | 2017-11-10 | 合肥梵腾环保科技有限公司 | A kind of brushing gypsum and preparation method thereof |
| CN108751903A (en) * | 2018-08-27 | 2018-11-06 | 倍福德新型建材（江苏）有限公司 | A kind of water-fast finish coat gypsum mortar of novel high-efficiency environment friendly |
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Application publication date: 20110921 |