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CN109368642A - A method for improving the carbon dioxide absorption efficiency of fresh concrete - Google Patents

A method for improving the carbon dioxide absorption efficiency of fresh concrete Download PDF

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Publication number
CN109368642A
CN109368642A CN201811428829.6A CN201811428829A CN109368642A CN 109368642 A CN109368642 A CN 109368642A CN 201811428829 A CN201811428829 A CN 201811428829A CN 109368642 A CN109368642 A CN 109368642A
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China
Prior art keywords
cement
concrete
stirring
mixing
cement slurry
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Pending
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CN201811428829.6A
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Chinese (zh)
Inventor
姬永生
周样梅
刘翔宇
郭煜诚
严久鑫
陈鑫冰
徐之山
时方鸣
陈豪
张莉
刘本琳
吴守荣
石博文
徐圣楠
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China University of Mining and Technology Beijing CUMTB
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China University of Mining and Technology Beijing CUMTB
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Priority to CN201811428829.6A priority Critical patent/CN109368642A/en
Publication of CN109368642A publication Critical patent/CN109368642A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
    • C01B32/00—Carbon; Compounds thereof
    • C01B32/50—Carbon dioxide
    • C01B32/55—Solidifying
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
    • B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
    • B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
    • 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
    • C04B28/02—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 hydraulic cements other than calcium sulfates
    • C04B28/04—Portland cements
    • 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
    • C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
    • C04B2111/00017—Aspects relating to the protection of the environment

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Dispersion Chemistry (AREA)
  • Gas Separation By Absorption (AREA)

Abstract

本发明公开了一种提升新拌混凝土吸收二氧化碳效率的方法。本发明在混凝土的搅拌装置中引入搅拌磨，单独拌制水泥浆体；利用搅拌磨将搅拌和湿磨融为一体。在搅拌时，通过湿磨将水泥颗粒表面的水化产物以及碳化沉积在颗粒表面的纳米碳酸钙及时剥离，使水泥颗粒不断暴露出新鲜表面；增加CO2与水泥颗粒以及水化产物的接触面积并加快水泥水化反应，从而大大加快混凝土浆体吸收CO2的速度；该方法能有效避免纳米碳酸钙颗粒在水泥颗粒周围沉积带来的CO2吸收速度降低的问题，大幅提高CO2的吸收速度和混凝土的生产效率。

The invention discloses a method for improving the carbon dioxide absorption efficiency of freshly mixed concrete. In the present invention, a mixing mill is introduced into the concrete mixing device, and the cement slurry is separately mixed; and the mixing and wet grinding are integrated by using the mixing mill. During stirring, the hydration products on the surface of the cement particles and the nano-calcium carbonate carbonized and deposited on the surface of the particles are peeled off in time through wet grinding, so that the cement particles are continuously exposed to the fresh surface; the contact area of CO 2 with the cement particles and the hydration products is increased. And accelerate the cement hydration reaction, thereby greatly speeding up the rate of CO 2 absorption by the concrete slurry; this method can effectively avoid the problem of reducing the CO 2 absorption rate caused by the deposition of nano-calcium carbonate particles around the cement particles, and greatly improve the CO 2 absorption speed and production efficiency of concrete.

Description

A method of promoting fresh concrete absorbing carbon dioxide efficiency
Technical field
The present invention relates to a kind of promotion fresh concretes to absorb CO2The method of efficiency, belongs to CO2Seal solidification field up for safekeeping.
Background technique
The industrial revolution is broken out so far, and the process of industrialization and urbanization is accelerated rapidly, and global economy has obtained rapid hair Exhibition.But traditional developmental model is the extensive economy development model to consume huge energy resource as cost, this is to the whole world Ecological environment brings huge pressure, and the destruction of ecological environment makes the living space of the mankind be faced with increasingly serious threat. In numerous ecological environment problems, climate warming is had become first of global ten overall situation problems.With the continuous raising of global warming, The two poles of the earth and severe cold areas glacier can gradually melt, and lead to that sea level rise, flood coastal area by seawater.The thawing in glacier Ecological environment can be also destroyed, numerous animals and plants in imminent danger will lose the space depended on for existence, face the danger of extinction.Climate warming Mainly the greenhouse effects as caused by excess emissions carbon dioxide are brought, and reduce the discharge of carbon dioxide, have reduced greenhouse effects Common recognition as countries in the world.
Currently, countries in the world are all striving to find reduction discharge CO2Most fast, most efficient method.Although each side is all long-pending Pole response, measure is sought in effort, but since fossil fuel is still indispensable resource in human production activity, it is traditional with Coal, petroleum, the fossil energies such as natural gas are that the production method of power changes in a short time, CO2Discharge amount at following one section To also constantly it increase in time.Seal and solidify CO up for safekeeping2It is to reduce CO2A kind of common method of discharge, such as ore carbonization and ocean envelope It deposits.But ore carbonization needs to make mineral enhancement pretreatment, this process is very since natural reaction process is slower CO is sealed in energy consumption, ore carbonization up for safekeeping2Potentiality and pessimistic.Ocean, which is sealed up for safekeeping, can be such that seawater surface gas concentration lwevel increases, and change The chemical feature of ocean, a series of problems, such as bringing surface seawater to be acidified.Therefore seeking one kind seals and solidifies CO up for safekeeping2New method Have become the matter of great urgency.
Utilize CO2CO may be implemented in the property for easily reacting the stable carbonate of generation in the solution with alkaline matter2Seal up for safekeeping and Solidification.Cement can generate a large amount of Ca (OH) in hydration process2, in the environment of having water, Ca (OH)2It will be with CO2Reaction generates CaCO3If being passed through CO in mixing concrete2Exhaust gas utilizes hydrolysis product of cement and CO2The carburizing reagent of generation can Realize CO2Absorption solidification.Currently, correlative study is unfolded to this in existing research personnel both at home and abroad, when mixing concrete, is being stirred CO is injected in machine2Exhaust gas, and blender is made into sealing container makes its sealing, prevent CO2Exhaust leak is a kind of novel, ring It protects, thorough carbon sequestration mode.
But CO2A large amount of nano-calcium carbonate particles objects not soluble in water are generated after reacting with hydrolysis product of cement, Grain object is constantly deposited in cement particle surface.Moreover, with the continuous aquation of cement granules, hydrated product also will be in cement particle surface Deposition.The two all makes CO2It is gradually reduced with the contact area of cement granules, reduces reaction speed, not only make CO2Infiltration rate Constantly reduce.In addition, when nano-calcium carbonate particles object and hydrolysis product of cement reache a certain level the package of cement granules, The CO of concrete mortar2Uptake is up to the upper limit, so far to CO2Uptake it is very low (still less than the 2% of cement consumption), greatly It limits concrete and absorbs CO2Potentiality.Therefore urgent need finds one kind and is able to ascend fresh concrete slurry absorption CO2Efficiency Method solves concrete mortar and absorbs CO2Speed is slow and the lower problem of uptake.
Summary of the invention
Goal of the invention of the invention is to absorb CO to make up fresh concrete2The problem of speed is slow, low efficiency, proposes A kind of promotion fresh concrete absorption CO2The method of efficiency absorbs CO for fresh concrete2。
The present invention is achieved through the following technical solutions, a kind of side promoting fresh concrete absorbing carbon dioxide efficiency Method, it is characterised in that: stirring mill apparatus is introduced in the stirring technique of concrete, stirring mill apparatus is used to carry out cement slurry Grinding, and it is passed through CO2Gas realizes cement slurry to CO2Seal up for safekeeping and solidify；By by the cement granules table in cement slurry Face generates and the nano-calcium carbonate particles deposited are removed in time, and cement granules is made constantly to expose fresh surface；And abrasive action The aggregate of cement granules aggregate and nano-calcium carbonate particles and cement granules can be smashed in time.
As a kind of a kind of optimization side for the method for promoting fresh concrete absorbing carbon dioxide efficiency of the present invention Case:
The stirring mill apparatus, including shell, shell one end are opening, and the other end is discharge port, and being equipped with will be in shell Part is the partition of mixing chamber and storage bin；Shell positioned at the partition top is equipped with air inlet, sets on the air inlet There is check valve；Several steel balls are placed in the mixing chamber；
The partition is equipped with several holes, and pore diameter is less than the diameter of steel ball in mixing chamber, to prevent steel ball from leaking into In storage bin；
Further include the top cover for closing shell opening, the top cover be equipped with the water inlet being connected to enclosure interior and cement into Material mouth, and the carbon dioxide concentration for detecting gas concentration lwevel in shell；Stirring motor is installed on the top cover, And it is mounted on the helical blade on motor.
As a kind of a kind of optimization side for the method for promoting fresh concrete absorbing carbon dioxide efficiency of the present invention Case: the steel ball is the steel ball of diameter of differing in size, and pore diameter is less than the straight of minimum steel ball in mixing chamber on the partition Diameter.
As a kind of a kind of optimization side for the method for promoting fresh concrete absorbing carbon dioxide efficiency of the present invention Case: introducing stirring mill apparatus in concrete stirring technology, refers to and is prepared by stirring mill apparatus according to the proportion of cement and water Cement slurry, and CO is filled with into cement slurry2Gas, cement slurry is to CO2After sealing up for safekeeping and solidifying, mixed mud blender is flowed into Neutralize aggregate and mineral admixture mixing concrete；Specific step is as follows:
1) calculated performance parameter: determining the single pot of amount of agitation and mixing time T of blender according to mixed mud blender performance parameter, Determine the CO of every pot of cement consumption M and every pot of slurry according to concrete proportioning by single pot of amount of agitation again2Uptakem, then by water Slurry body absorbs CO2Speedv, calculate the milling time that stirring mill apparatus prepares cement slurryt, in which:
；
2) feed: the cement of mass M is added in the cement feed inlet by stirring mill apparatus, water is added from water inlet in proportion, together Shi Qidong stirring motor, mixing cement slurry；
3) it ventilates: in the CO for starting to store in advance while stirring2Gas is passed through in mixing chamber by air inlet, utilizes dioxy Change the CO in concentration of carbon meter record mixing chamber2Gas concentration, and maintain CO2Gas concentration；
4) stir: lasting stirring absorbed CO2The cement slurry of gas flows into storage bin by partition, in whipping process, every Milling timetThe cement of a mass M is supplemented, and is proportionally added into water, supplements the cement slurry in mixing chamber；
5) it discharges: opening storing bin discharge port external every time T, cement slurry is put into concrete mixer, thus with charging It is synchronous, circulation production；
6) mixing concrete: mixed mud blender is utilized, then is proportionally added into aggregate and other mixed mud materials mixing coagulations Soil.
The invention has the following advantages:
Steel ball in mixing chamber, which is stirred in whipping process by helical blade, to be dug, the nanometer that can deposit cement particle surface CaCO3Particle and hydrolysis product of cement are removed in time, increase CO2With the contact area of hydrolysis product of cement, CO is greatly improved2's Infiltration rate；Under same case, CO can be made with this method mixing concrete2Infiltration rate improve 5 times or more.
After the method for the present invention introduces grinding technics, the Nano-meter CaCO3 of cement particle surface deposition3Particle and hydrated cementitious produce Object is removed in time, and cement slurry absorbs CO2Ability be no longer restricted, under same case, the CO of concrete can be made2Uptake Improve 3-5 times.
The introducing of grinding technics greatly accelerates cement slurry and absorbs CO2Speed can be substantially when preparing concrete Residence time of the cement slurry in mixing chamber is reduced, reduces discharge room every making concrete production efficiency improve 50%-100%.
Detailed description of the invention
Fig. 1 is concrete stirring production technology figure；
Fig. 2 is Ball-stirring mill apparatus structure schematic diagram；
Fig. 3 is diaphragm structure schematic diagram；
In figure: 10- shell；11- partition；12- mixing chamber；13- storage bin；14- steel ball；15- air inlet；16- check valve；17- Water inlet；18- cement feed inlet；19- carbon dioxide concentration；20- top cover；30- discharge port；40- stirring motor；41- spiral Blade；100- stirs mill apparatus；101- cementing tank；102- water tank；200- mineral admixture tank；300- aggregate tank；400- is mixed Earth stirrer.
Specific embodiment
With reference to the accompanying drawings and examples, invention is further described in detail.
Embodiment 1
Concrete material composition and its mass percent are as follows: cementitious material is 42.5 portland cement of P.O (volume 488kg/ m3)；Fine aggregate is sand (volume 767kg/m3)；Coarse aggregate is gradation stone (the volume 1051kg/m of 5 ~ 20mm3)；Water (volume 244kg/m3)；CO2Uptake is the 2% of cement quality.
As shown in Figure 1, stirring mill apparatus 100 is added in this in concrete stirring technology, specifically: stirring mill apparatus 100, Mineral admixture tank 200, aggregate tank 300 are connected to mixed mud blender 400 respectively；In addition, mix mill apparatus 100 also and cementing tank 101 are connected to water tank 102.
Stirring mill apparatus is introduced in concrete stirring technology, refers to the proportion by stirring mill apparatus according to cement and water Cement slurry is prepared, and is filled with CO into cement slurry2Gas, cement slurry is to CO2After sealing up for safekeeping and solidifying, flows into mixed mud and stir It mixes in machine and the mixings concrete such as aggregate and mineral admixture；Specific step is as follows:
1) calculated performance parameter: according to mixed mud blender performance parameter determine blender single pot of amount of agitation and mixing time T= 1min, then the CO of every pot of cement consumption M=488kg and every pot of slurry are determined by single pot of amount of agitation according to concrete proportioning2It inhales Receipts amountm=9.76kg, then CO is absorbed by cement slurry2SpeedvAbout 1.95kg/min calculates stirring mill apparatus and prepares cement The milling time of slurryt=5min。
2) feed: mass M=488kg cement is added in the cement feed inlet by stirring mill apparatus, in proportion from water inlet Water 244kg is added, while starting stirring motor, mixing cement slurry；
3) it ventilates: in the CO for starting to store in advance while stirring2Gas is passed through in mixing chamber by air inlet, utilizes dioxy Change the CO in concentration of carbon meter record mixing chamber2Gas concentration, and maintain CO2Gas concentration；
4) stir: lasting stirring absorbed CO2The cement slurry of gas flows into storage bin by partition, in whipping process, every Milling timet=5min supplements the cement of a 488kg and the water of 244kg, the cement slurry in mixing chamber；
5) it discharges: opening storing bin discharge port external every time T=1min, cement slurry is put into concrete mixer, thus with Charging synchronizes, circulation production；
6) mixing concrete: mixed mud blender is utilized, then is proportionally added into 767kg sand and 1051kg stone mixing coagulation Soil.
It is measured through overtesting, when being not introduced into stirring mill apparatus, concrete absorbs CO2SpeedvIt is only about 0.39(kg/ Min), uptake is only capable of reach cement quality 0.5%, and introducing stirring mill apparatus makes CO2Infiltration rate improve about 5 times, absorb Amount improves about 4 times.
Embodiment 2
As shown in Fig. 2, the stirring mill apparatus, including shell 10,10 one end of shell are opening, the other end is discharge port 30, And it is equipped with and will be divided into the partition 11 of mixing chamber 12 and storage bin 13 inside shell 10；Shell 10 positioned at 11 top of partition It is equipped with air inlet 15, the air inlet 15 is equipped with check valve 16；Several steel balls 14 are placed in the mixing chamber 12；
As shown in figure 3, the partition 11 be equipped with several holes, and pore diameter be less than mixing chamber 12 in steel ball 14 it is straight Diameter, to prevent steel ball 14 from leaking into storage bin 13；
It further include for closing the open top cover 20 of shell 10, the top cover 20 is equipped with and the water inlet that is connected to inside shell 10 17 and cement feed inlet 18, and the carbon dioxide concentration 19 for detecting gas concentration lwevel in shell 10；The top cover Stirring motor 40 is installed, and the helical blade 41 being mounted on motor 40 on 20.
Specifically, the discharge port 30 of closing of housing 10, prepares cement by water inlet 17 and cement feed inlet 18 in proportion Slurry starts stirring motor 40, and under the rotation of helical blade 41, steel ball 14 comes into full contact with and grinds with cement slurry, CO2Gas Body is equipped with air inlet 15 into mixing chamber 12 by being located at the shell 10 on 11 top of partition, completes cement slurry to CO2 Seal up for safekeeping and solidify.

Claims (4)

1. a kind of method for promoting fresh concrete absorbing carbon dioxide efficiency, it is characterised in that: in the stirring technique of concrete Mill apparatus is stirred in middle introducing, and stirring mill apparatus is passed through CO for grinding to cement slurry2Gas realizes cement slurry To CO2Seal up for safekeeping and solidify；By nano-calcium carbonate particles that the cement particle surface in cement slurry is generated and deposited and When remove, so that cement granules is constantly exposed fresh surface；And abrasive action can be by cement granules aggregate and nano-calcium carbonate The aggregate of calcium particle and cement granules is smashed in time.
2. a kind of method for promoting fresh concrete absorbing carbon dioxide efficiency according to claim 1, it is characterised in that:
The stirring mill apparatus, including shell (10), shell (10) one end are opening, and the other end is discharge port (30), and is pacified Equipped with the partition (11) of mixing chamber (12) and storage bin (13) will be divided into inside shell (10)；Positioned at the partition (11) top Shell (10) is equipped with air inlet (15), and the air inlet (15) is equipped with check valve (16)；It is placed in the mixing chamber (12) There are several steel balls (14)；
The partition (11) is equipped with several holes, and pore diameter is less than the diameter of mixing chamber (12) interior steel ball (14), with Prevent steel ball (14) from leaking into storage bin (13)；
It further include the top cover (20) for closing shell (10) opening, the top cover (20) is equipped with and is connected to inside shell (10) Water inlet (17) and cement feed inlet (18), and the gas concentration lwevel for detecting shell (10) interior gas concentration lwevel It counts (19)；Stirring motor (40) are installed on the top cover (20), and the helical blade (41) being mounted on motor (40).
3. a kind of method for promoting fresh concrete absorbing carbon dioxide efficiency according to claim 1, it is characterised in that:
The steel ball (14) is the steel ball (14) of diameter of differing in size, and pore diameter is less than mixing chamber on the partition (11) (12) diameter of minimum steel ball (14) in.
4. a kind of method for promoting fresh concrete absorbing carbon dioxide efficiency according to claim 2, it is characterised in that: Stirring mill apparatus is introduced in concrete stirring technology, is referred to and is prepared and grind according to the proportion of cement and water by stirring mill apparatus Cement slurry is worn into, and is filled with CO into cement slurry2Gas, cement slurry is to CO2After sealing up for safekeeping and solidifying, flows into mixed mud and stir It mixes in machine and aggregate and mineral admixture mixing concrete；Specific step is as follows:
1) calculated performance parameter: determining the single pot of amount of agitation and mixing time T of blender according to mixed mud blender performance parameter, Determine the CO of every pot of cement consumption M and every pot of slurry according to concrete proportioning by single pot of amount of agitation again2Uptakem, then by water Slurry body absorbs CO2Speedv, calculate the milling time that stirring mill apparatus prepares cement slurryt, in which:
；
2) feed: the cement of mass M is added in the cement feed inlet (18) by stirring mill apparatus, adds in proportion from water inlet (17) Enter water, while starting stirring motor (40), mixing cement slurry；
3) it ventilates: in the CO for starting to store in advance while stirring2Gas is passed through in mixing chamber (12) by air inlet (15), Utilize the CO in carbon dioxide concentration record mixing chamber (12)2Gas concentration, and maintain CO2Gas concentration；
4) stir: lasting stirring absorbed CO2The cement slurry of gas flows into storage bin (13) by partition (11), whipping process In, every milling timetThe cement of a mass M is supplemented, and is proportionally added into water, supplements the cement slurry in mixing chamber；
5) it discharges: opening storage bin (13) discharge port every mixing time T, cement slurry is put into concrete mixer, from And, circulation production synchronous with charging；
6) mixing concrete: mixed mud blender is utilized, then is proportionally added into aggregate and other mixed mud materials mixing coagulations Soil.
CN201811428829.6A 2018-11-27 2018-11-27 A method for improving the carbon dioxide absorption efficiency of fresh concrete Pending CN109368642A (en)

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CN110203932A (en) * 2019-06-05 2019-09-06 东南大学 A kind of device and preparation method of foam concrete solidified carbon dioxide
WO2022135714A1 (en) * 2020-12-23 2022-06-30 Bhs-Sonthofen Gmbh Apparatus for producing co2-enriched concrete
CN114734533A (en) * 2022-06-14 2022-07-12 福建南方路面机械股份有限公司 Concrete stirring device and method for reinforcing carbon fixation
CN115872638A (en) * 2022-11-17 2023-03-31 湖南大学 Method for preparing high-performance cement-based material by using carbonized high belite sulphoaluminate cement
CN116283154A (en) * 2023-03-31 2023-06-23 同济大学 A kind of high viscosity cement slurry and preparation method thereof
CN116617841A (en) * 2023-06-19 2023-08-22 中国矿业大学 A continuous reaction device for coal-based solid waste slurry mineralization and sequestration of CO2 gas
CN117003534A (en) * 2023-07-31 2023-11-07 湖北工业大学 Carbon sequestration method and device for autoclaved aerated concrete products

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Cited By (10)

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Publication number Priority date Publication date Assignee Title
CN110203932A (en) * 2019-06-05 2019-09-06 东南大学 A kind of device and preparation method of foam concrete solidified carbon dioxide
WO2022135714A1 (en) * 2020-12-23 2022-06-30 Bhs-Sonthofen Gmbh Apparatus for producing co2-enriched concrete
CN114734533A (en) * 2022-06-14 2022-07-12 福建南方路面机械股份有限公司 Concrete stirring device and method for reinforcing carbon fixation
WO2023240771A1 (en) * 2022-06-14 2023-12-21 福建南方路面机械股份有限公司 Concrete stirring device and method for reinforcing carbon sequestration
CN115872638A (en) * 2022-11-17 2023-03-31 湖南大学 Method for preparing high-performance cement-based material by using carbonized high belite sulphoaluminate cement
CN116283154A (en) * 2023-03-31 2023-06-23 同济大学 A kind of high viscosity cement slurry and preparation method thereof
CN116617841A (en) * 2023-06-19 2023-08-22 中国矿业大学 A continuous reaction device for coal-based solid waste slurry mineralization and sequestration of CO2 gas
CN116617841B (en) * 2023-06-19 2025-08-01 中国矿业大学 Mineralizing and sequestering CO from coal-based solid waste slurry2Continuous reaction device for gas
CN117003534A (en) * 2023-07-31 2023-11-07 湖北工业大学 Carbon sequestration method and device for autoclaved aerated concrete products
CN117003534B (en) * 2023-07-31 2024-06-07 湖北工业大学 Carbon sealing method and device for autoclaved aerated concrete products

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Application publication date: 20190222