CN104891878B - A kind of cement based carbon dioxide solidification agent and preparation method thereof - Google Patents
A kind of cement based carbon dioxide solidification agent and preparation method thereof Download PDFInfo
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- CN104891878B CN104891878B CN201510247602.1A CN201510247602A CN104891878B CN 104891878 B CN104891878 B CN 104891878B CN 201510247602 A CN201510247602 A CN 201510247602A CN 104891878 B CN104891878 B CN 104891878B
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- cement
- carbon dioxide
- water
- foaming agent
- based carbon
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- 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
Landscapes
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Processing Of Solid Wastes (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
Abstract
The present invention relates to a kind of cement based carbon dioxide solidification agent and preparation method thereof, composition includes ground slag, cement, water, foaming agent, desulfurated plaster, MgO, and its mass ratio is：Ground slag 29.4% 46.7%, cement 11.8% 26.7%, water 34.9% 44.1%, foaming agent 0.8% 1.8%, desulfurated plaster 1.2% 3.3%, MgO 0.5% 2.7%.The cement based carbon dioxide solidification agent that the present invention provides, has highly important facilitation to implementing the strategy of sustainable development, energy-conserving profit waste and environmental protection, has a extensive future.
Description
Technical field
The invention belongs to Materials Science and Engineering field is and in particular to a kind of cement based carbon dioxide solidification agent and its preparation
Method.
Background technology
The medium-and-large-sized Fossil fuel of commercial production and the burning of bioenergy, can discharge great amount of carbon dioxide in air and lead
Cause the destruction of weather balance.In order to reduce the impact to air of carbon dioxide, take various carbon dioxide sequestration skills at present
Art.Ocean is sealed up for safekeeping and can be injected carbon dioxide into water Cylinder or seabed, but can reduce seawater pH value, the growth of impact abyssopelagic organism,
Meanwhile, in the long run, the carbon dioxide being housed in ocean can lentamente escape the water surface, returns air；Geological storage can be by two
Carbonoxide is closed in deeper subsurface, but can destroy the mineral of geology deep layer storage band, changes deep geology structure, technology simultaneously
Have high demands, risk is larger；Ore carbonization can using the alkalescence in natural silicate and alkaline-earth oxide by carbon dioxide solidification, but
Natural carbonisation is very slow.Therefore, at present in the urgent need to a kind of economic carbon dioxide solidification agent, can relatively rapid have
Effect ground absorbing carbon dioxide, do not cause extra harm simultaneously and to environment.
Ground slag is the side-product of smelting ironworker's industry, typically often produces 1 ton of pig iron, will discharge 0.3-1.0 ton waste residue, therefore
It is also a kind of industrial residue having a large capacity and a wide range.Ground slag formed in chilling substantial amounts of amorphous activity glass body structure or
Network structure, has higher lateral reactivity, is the important sources of cement-based material active admixture.
At present, China's cement production capacity expands continuous, but problem of excess production capacity increasingly highlights.Although in recent years in government's phase
Under the joint efforts of pass department, employer's organization and cement production enterprise, containment cement industry production capacity surplus work just aobvious effect, but full row
Industry is dissolved production capacity work and is still faced larger pressure.How to dissolve the problem that production capacity surplus is that we should deeply think deeply.
For reducing the discharge of carbon dioxide, keeping ecological balance, utilize ground slag and manufacture of cement carbon dioxide in a large number
Firming agent, can make full use of ground slag, reduce industrial waste and pile up the harm causing to environment, can promote cement multiplicity again
Change and use, alleviate the pressure of cement industry production capacity surplus, this is for implementing the strategy of sustainable development, energy-saving and emission-reduction and environmental protection
Significant.
Content of the invention
The present invention provides a kind of cement based carbon dioxide solidification agent and preparation method thereof, the carbon dioxide solidification agent energy of preparation
Enough effectively absorb carbon dioxide and environment is not produced with extra pressure, facility of simultaneously drawing materials, utilize solid waste in a large number
Ground slag and common building materials cement, promote the recycling of ground slag and the variation of cement to use, safeguard life
State environment.
In order to realize foregoing invention purpose, the technical solution used in the present invention is：
A kind of cement based carbon dioxide solidification agent it is characterised in that：Ground slag containing 29.4%-46.7%, 11.8%-
26.7% cement, the water of 34.9%-44.1%, the foaming agent of 0.8%-1.8%, the desulfurated plaster of 1.2%-3.3% and 0.5%-2.7%
MgO；Described percentage ratio is mass fraction.
The preparation method of above-mentioned cement based carbon dioxide solidification agent, the method step is as follows：
Step 1, by ground slag, cement, desulfurated plaster, MgO powder and water, mix becomes cement slurry in proportion, wherein mixes
Share the water yield and deduct liquid blowing agent thinned water amount for proportioning total Water；
Step 2, liquid blowing agent is added in 10 times of quality water and is diluted to foaming agent solution, is setting pressure as 0.3-
Utilize compressed air by foaming agent solution and compressed air in the indoor mixing of mixing under the conditions of 0.4MPa, mix before being then injected into
In the cement slurry closing；
Step 3, the cement slurry containing foaming agent is injected to the cube die trial that the length of side is 2-3cm, and the slurry of hardening is first
In temperature
Maintenance 28 days under 60 ± 2 DEG C of saturated vapor environment, then maintenance 62 under 20 ± 2 DEG C of temperature, humidity 90% environment
My god.
Beneficial effects of the present invention：
The environmental problem that the discharge of carbon dioxide leads to is more and more prominent, existing carbon dioxide solidification measure imperfection.
The present invention provide cement based carbon dioxide solidification agent be mainly made up of ground slag, cement, water, additionally contain foaming agent,
Desulfurated plaster and MgO, facility of drawing materials, with low cost, can effective absorbing carbon dioxide, rationally make use of industrial waste simultaneously, subtract
Lack environmental pollution, protected ecological environment, had a extensive future.
Specific embodiment
Embodiment 1
A kind of proportioning of cement based carbon dioxide solidification agent is：Ground slag 43.8%, cement 12.5%, water 40.9%（It is
Proportioning total Water）, foaming agent 1.0%, desulfurated plaster 1.25%, MgO 0.55%.Described percentage ratio is mass fraction, as follows.
Preparation method is as follows：Step 1, by ground slag 43.8%, cement 12.5%, desulfurated plaster 1.25%, MgO powder
0.55% and 30.9% water（30.9% is mixing water amount）Mix becomes cement slurry in proportion.
Step 2, set pressure as 0.3-0.4MPa under the conditions of using compressed air by foaming agent solution（Foaming agent solution
It is made up of 1.0% foaming agent and 10% water, wherein 10% water is liquid blowing agent thinned water amount, described percentage ratio is to account for cement based
The mass ratio of carbon dioxide solidification agent）With compressed air in the indoor mixing of mixing, the cement mortar of mix before being then injected into
In body.
Step 3, the cement slurry containing foaming agent is injected to the cube die trial that the length of side is 2cm, and the slurry of hardening first exists
Maintenance 28 days under the saturated vapor environment of temperature 60 C, then maintenance 62 days under 20 ± 2 DEG C of temperature, humidity 90% environment.
The present embodiment take 100 pieces preparation carbon dioxide solidification agent be placed in gas concentration lwevel be 25%, the carbon of humidity 70%
Change in proof box, through 7 days, in carbonization test case, gas concentration lwevel reduced 16.2%, and through 28 days, gas concentration lwevel subtracted
Few 60.0%.
Embodiment 2
A kind of proportioning of cement based carbon dioxide solidification agent is：Ground slag 33.3%, cement 26.7%, water 35.2%, foaming
Agent 0.8%, desulfurated plaster 2.6%, MgO 1.4%.Preparation method is with embodiment 1.
The present embodiment take 100 pieces preparation carbon dioxide solidification agent be placed in gas concentration lwevel be 25%, the carbon of humidity 70%
Change in proof box, through 7 days, in carbonization test case, gas concentration lwevel reduced 14.3%, and through 14 days, gas concentration lwevel subtracted
Few 35.8%.
Embodiment 3
A kind of proportioning of cement based carbon dioxide solidification agent is：Ground slag 38.2%, cement 14.7%, water 42.9%, foaming
Agent 1.8%, desulfurated plaster 1.8%, MgO 0.6%.Preparation method is ibid.
The present embodiment take 100 pieces preparation carbon dioxide solidification agent be placed in gas concentration lwevel be 25%, the carbon of humidity 70%
Change in proof box, through 7 days, in carbonization test case, gas concentration lwevel reduced 17.9%, and through 28 days, gas concentration lwevel subtracted
Few 62.3%.
The above is only the preferred embodiment of the present invention it is noted that ordinary skill people for the art
For member, on the premise of without departing from the technology of the present invention principle, some improvement can also be made and deform, these improve and deform
Also should be regarded as protection scope of the present invention.
Claims (2)
1. a kind of cement based carbon dioxide solidification agent it is characterised in that：Ground slag containing 29.4%-46.7%, 11.8%-
26.7% cement, the water of 34.9%-44.1%, the foaming agent of 0.8%-1.8%, the desulfurated plaster of 1.2%-3.3% and 0.5%-2.7%
MgO；Described percentage ratio is mass fraction.
2. cement based carbon dioxide solidification agent described in a kind of claim 1 preparation method it is characterised in that：The method include with
Lower preparation process：
Step 1, by ground slag, cement, desulfurated plaster, MgO powder and water, mix becomes cement slurry in proportion, and wherein mix is used
The water yield deducts liquid blowing agent thinned water amount for proportioning total Water；
Step 2, foaming agent is added in 10 times of quality water and is diluted to foaming agent solution, is setting pressure as 0.3-0.4MPa bar
Utilize compressed air by foaming agent solution and compressed air in the indoor mixing of mixing, the cement of mix before being then injected under part
In slurry；
Step 3, the cement slurry containing foaming agent is injected the cube die trial that the length of side is 2-3cm, the slurry of hardening is first in temperature
Maintenance 28 days under 60 ± 2 DEG C of saturated vapor environment, then maintenance 62 days under 20 ± 2 DEG C of temperature, humidity 90% environment.
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| CN201510247602.1A CN104891878B (en) | 2015-05-15 | 2015-05-15 | A kind of cement based carbon dioxide solidification agent and preparation method thereof |
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| CN104891878A CN104891878A (en) | 2015-09-09 |
| CN104891878B true CN104891878B (en) | 2017-03-08 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105461266B (en) * | 2015-12-01 | 2017-12-19 | 长安大学 | A kind of macrovoid cement concrete for being capable of absorbing carbon dioxide and preparation method thereof |
| CN113264734A (en) * | 2021-06-04 | 2021-08-17 | 河海大学 | Sludge curing material based on cement-based carbon dioxide foam and sludge curing method and application thereof |
| CN115215624B (en) * | 2022-05-30 | 2023-05-05 | 湖北工业大学 | Carbon dioxide geological sequestration method using phosphogypsum as filler |
| CN115504757B (en) * | 2022-09-27 | 2023-10-03 | 东莞理工学院 | Method for sealing and carbon fixation of agricultural straw |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071029A (en) * | 2010-12-24 | 2011-05-25 | 东南大学 | Green low-carbon curing agent for soil curing |
| KR20140144625A (en) * | 2013-06-11 | 2014-12-19 | 주식회사 씨엠디기술단 | Solidified agent for deep cement mixing method |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9028607B2 (en) * | 2005-02-24 | 2015-05-12 | Wisconsin Electric Power Company | Carbon dioxide sequestration in foamed controlled low strength materials |
| US7919064B2 (en) * | 2008-02-12 | 2011-04-05 | Michigan Technological University | Capture and sequestration of carbon dioxide in flue gases |
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2015
- 2015-05-15 CN CN201510247602.1A patent/CN104891878B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102071029A (en) * | 2010-12-24 | 2011-05-25 | 东南大学 | Green low-carbon curing agent for soil curing |
| KR20140144625A (en) * | 2013-06-11 | 2014-12-19 | 주식회사 씨엠디기술단 | Solidified agent for deep cement mixing method |
Non-Patent Citations (1)
| Title |
|---|
| Accelerated carbonation–A potential approach to sequester CO2 in cement paste containing slag and reactive MgO;Liwu Mo，Daman K.Panesar;《Cement and Concrete Composites 》;20131231;第43卷;第2.1节 * |
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Granted publication date: 20170308 Termination date: 20190515 |