CN116715497A - Carbon-fixing aerated concrete wall material product based on nickel slag and concrete tail slurry and preparation method thereof - Google Patents
Carbon-fixing aerated concrete wall material product based on nickel slag and concrete tail slurry and preparation method thereof Download PDFInfo
- Publication number
- CN116715497A CN116715497A CN202310566446.XA CN202310566446A CN116715497A CN 116715497 A CN116715497 A CN 116715497A CN 202310566446 A CN202310566446 A CN 202310566446A CN 116715497 A CN116715497 A CN 116715497A
- Authority
- CN
- China
- Prior art keywords
- nickel slag
- carbon
- tail slurry
- concrete
- concrete wall
- 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.)
- Pending
Links
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 112
- 239000004567 concrete Substances 0.000 title claims abstract description 100
- 239000002893 slag Substances 0.000 title claims abstract description 58
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 56
- 239000002002 slurry Substances 0.000 title claims abstract description 55
- 239000000463 material Substances 0.000 title claims abstract description 29
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 238000007613 slurry method Methods 0.000 title description 2
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 26
- 239000013078 crystal Substances 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 22
- 238000003756 stirring Methods 0.000 claims abstract description 21
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000004568 cement Substances 0.000 claims abstract description 19
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 17
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 17
- 239000004571 lime Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 14
- 239000011268 mixed slurry Substances 0.000 claims abstract description 13
- 239000010440 gypsum Substances 0.000 claims abstract description 12
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 12
- 239000002667 nucleating agent Substances 0.000 claims description 20
- 239000011575 calcium Substances 0.000 claims description 19
- 239000000725 suspension Substances 0.000 claims description 15
- 239000002202 Polyethylene glycol Substances 0.000 claims description 14
- 238000010000 carbonizing Methods 0.000 claims description 14
- 229920001223 polyethylene glycol Polymers 0.000 claims description 14
- 230000003068 static effect Effects 0.000 claims description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 9
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910000863 Ferronickel Inorganic materials 0.000 claims description 3
- 238000003723 Smelting Methods 0.000 claims description 3
- 229910045601 alloy Inorganic materials 0.000 claims description 3
- 239000000956 alloy Substances 0.000 claims description 3
- 239000000395 magnesium oxide Substances 0.000 claims description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 3
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 235000012239 silicon dioxide Nutrition 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 239000002910 solid waste Substances 0.000 claims description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims description 2
- 239000007924 injection Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 16
- 230000000694 effects Effects 0.000 abstract description 12
- 238000003763 carbonization Methods 0.000 abstract description 10
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 abstract description 9
- 229910052500 inorganic mineral Inorganic materials 0.000 abstract description 9
- 239000011707 mineral Substances 0.000 abstract description 9
- MKTRXTLKNXLULX-UHFFFAOYSA-P pentacalcium;dioxido(oxo)silane;hydron;tetrahydrate Chemical compound [H+].[H+].O.O.O.O.[Ca+2].[Ca+2].[Ca+2].[Ca+2].[Ca+2].[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O.[O-][Si]([O-])=O MKTRXTLKNXLULX-UHFFFAOYSA-P 0.000 abstract description 9
- 150000004645 aluminates Chemical class 0.000 abstract description 8
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 229910004298 SiO 2 Inorganic materials 0.000 abstract description 4
- 230000015572 biosynthetic process Effects 0.000 abstract description 4
- 239000000084 colloidal system Substances 0.000 abstract description 4
- 239000000378 calcium silicate Substances 0.000 abstract description 3
- 229910052918 calcium silicate Inorganic materials 0.000 abstract description 3
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000006698 induction Effects 0.000 abstract description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 abstract 1
- 238000005266 casting Methods 0.000 abstract 1
- 238000005520 cutting process Methods 0.000 description 15
- 235000010755 mineral Nutrition 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 7
- 239000011449 brick Substances 0.000 description 5
- 238000005187 foaming Methods 0.000 description 5
- 239000011507 gypsum plaster Substances 0.000 description 5
- 238000001746 injection moulding Methods 0.000 description 5
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 239000011398 Portland cement Substances 0.000 description 2
- 238000007630 basic procedure Methods 0.000 description 2
- 239000010881 fly ash Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000004576 sand Substances 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004566 building material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- HCWCAKKEBCNQJP-UHFFFAOYSA-N magnesium orthosilicate Chemical compound [Mg+2].[Mg+2].[O-][Si]([O-])([O-])[O-] HCWCAKKEBCNQJP-UHFFFAOYSA-N 0.000 description 1
- 239000000391 magnesium silicate Substances 0.000 description 1
- 229910052919 magnesium silicate Inorganic materials 0.000 description 1
- 235000019792 magnesium silicate Nutrition 0.000 description 1
- 230000006911 nucleation Effects 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/26—Carbonates
- C04B14/28—Carbonates of calcium
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/14—Waste materials; Refuse from metallurgical processes
- C04B18/141—Slags
-
- 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
- C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B18/04—Waste materials; Refuse
- C04B18/16—Waste materials; Refuse from building or ceramic industry
-
- 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
- C04B38/00—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof
- C04B38/02—Porous mortars, concrete, artificial stone or ceramic ware; Preparation thereof by adding chemical blowing agents
-
- 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
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0231—Carbon dioxide hardening
- C04B40/0236—Carbon dioxide post-treatment of already hardened material
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- 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
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
-
- 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
Abstract
The invention discloses a carbon-fixing aerated concrete wall material product based on nickel slag and concrete tail slurry and a preparation method thereof, wherein the carbon-fixing aerated concrete wall material product comprises nickel slag, concrete tail slurry, gypsum, cement, lime, aluminum powder paste and a crystal nucleus agent; the preparation method comprises mixing nickel slag, concrete tail slurry and Gypsum Fibrosum, adding cement and lime, stirring, adding aluminum powder paste and crystal nucleus agent, stirring to obtain mixed slurry, casting, maintaining, demolding to obtain blank, and carbonizingProtecting. The invention applies the nickel slag and the concrete tail slurry to the aerated concrete wall material product, combines with the carbonization maintenance process, can fully excite a large amount of minerals such as silicate, aluminate and the like with low activity in the nickel slag and the concrete tail slurry on the basis that the nickel slag and the concrete tail slurry provide partial siliceous raw materials and calcareous raw materials, and promotes CO under the induction of a crystal nucleus agent 2 Generates CaCO with calcium silicate component in nickel slag and concrete tail slurry 3 And SiO 2 The colloid provides reaction conditions for the formation of tobermorite.
Description
Technical Field
The invention belongs to the field of carbon-fixing aerated concrete wall products, and particularly relates to a method for preparing a carbon-fixing aerated concrete wall product based on nickel slag and concrete tail slurry.
Background
Nickel slag is used as a carbon-fixing waste discharged in a large amount in factory production, and the use value of the nickel slag is not widely developed. Some domestic and foreign nickel slag utilization mainly focuses on the aspects of preparing concrete by taking nickel slag as coarse and fine aggregate, preparing traditional concrete by taking the nickel slag as siliceous raw material, and the like, and when preparing traditional concrete products by taking nickel slag as siliceous material, the cracking of concrete blocks is often caused by expansion in the hydration process.
A large amount of concrete tail slurry is generated in the concrete mixing plant every year, a small part of the concrete tail slurry is recycled in the concrete production, a large amount of concrete tail slurry is buried and piled up, the concrete tail slurry is not effectively utilized, and the environment is extremely adversely affected.
Nickel slag is not widely applied to the traditional autoclaved aerated concrete field, but is widely used because the nickel slag contains a large amount of silicate, aluminate and other low-activity minerals, and is difficult to form a main strength structure of aerated concrete, namely tobermorite, like quartz sand and fly ash in the traditional autoclaved aerated concrete preparation process, so that a large amount of active SiO is provided 2 . In order to effectively improve the activity of nickel slag, the method which is commonly adopted at present is high-temperature calcination and quenching treatmentSuch a thermal excitation method is not only complicated in process, but also causes additional energy consumption, which is rather inexpensiveness.
Similarly, the concrete tail slurry contains a large amount of low-activity minerals such as silicate, aluminate and the like, so that the low-activity minerals cannot be fully utilized in the autoclaved aerated concrete field.
Disclosure of Invention
The invention aims to: the invention aims to provide a method for preparing a carbon-fixing aerated concrete wall material product based on nickel slag and concrete tail slurry, which can excite the activity of low-activity minerals such as silicate and aluminate in the nickel slag and the concrete tail slurry, fully utilize the low-activity silicate or aluminate components and provide the reaction condition of tobermorite.
The technical scheme is as follows: the invention discloses a carbon-fixing aerated concrete wall material product based on nickel slag and concrete tail slurry, which comprises the following raw materials in parts by weight: 25-32 parts of nickel slag, 90-100 parts of concrete tail slurry, 3-4 parts of gypsum, 8-12 parts of cement, 15-20 parts of lime, 0.08-0.12 part of aluminum powder paste and 2-4 parts of nucleating agent.
Further, the nucleating agent adopted by the carbon-fixing aerated concrete wall material product is prepared by the following steps: to Ca (OH) with a concentration of 1-1.2mol/L 2 Adding Ca (OH) to the suspension 2 Ba (OH) with mass of 4-6% 2 And 2-5% polyethylene glycol, CO 2 Ca (OH) at a temperature of 20-50deg.C is injected at a rate of 90-120ml/min 2 The crystal nucleus agent is prepared after 15-30min in suspension.
The nucleating agent of the invention combines Ba (OH) 2 And polyethylene glycol, using polyethylene glycol and Ba (OH) 2 Is effective in providing nucleation sites for enhanced CaCO 3 The dispersibility of the crystal nucleus and the formation of spindle-shaped or rod-shaped crystals ensure the effective growth and mutual adhesion of tobermorite and ensure the good mechanical property of tobermorite. At the same time, adopt the CaCO 3 The suspension liquid is used as a crystal nucleus agent, so that the total porosity of cement paste is greatly reduced, the shrinkage of the aerated concrete wall product is reduced, the crystallinity of tobermorite is improved, and the shrinkage resistance of the aerated concrete wall product is further improved.
Furthermore, the nickel slag adopted by the carbon-fixing aerated concrete wall material product is solid waste slag generated by smelting ferronickel alloy, wherein the content of magnesium oxide is more than or equal to 10 percent, and the content of silicon dioxide is more than or equal to 40 percent.
Further, the solid content of the concrete tail slurry adopted by the carbon-fixing aerated concrete wall material product is 25-35%, the fineness is less than 20% of the screen residue of a square hole screen with 0.2mm, and the calcium oxide content is more than or equal to 30%.
The method for preparing the carbon-fixing aerated concrete wall material product comprises the following steps:
(1) Preparing a blank: mixing nickel slag, concrete tail slurry and gypsum uniformly, adding cement and lime, stirring for 30-45s, adding aluminum powder paste and a crystal nucleus agent, stirring for 5-10s to obtain mixed slurry, and performing film injection, static curing and demoulding to obtain a blank;
(2) Carbonizing and curing: placing the blank at 80-90deg.C and CO 2 And under the condition of the pressure of 2-3MPa, carbonizing and curing for 2-3 hours to obtain the carbon-fixing aerated concrete wall material product.
The invention adopts carbonization maintenance method based on nickel slag, concrete tail slurry and crystal nucleus agent, which can excite the nickel slag and concrete tail slurry to contain a large amount of low-activity minerals such as silicate, aluminate and the like, and promote CO 2 CaCO is generated by the low-activity calcium silicate component in nickel slag and concrete tail slurry 3 And SiO 2 And the colloid provides the reaction condition of tobermorite and enhances the compressive strength of the aerated concrete wall material.
Further, in the step (1) of the preparation method, the static curing is that the static curing is carried out for 4-6 hours at 50-60 ℃.
The beneficial effects are that: compared with the prior art, the invention has the remarkable advantages that: the invention applies the nickel slag and the concrete tail slurry to the aerated concrete wall material product, combines the carbonization maintenance process, can fully excite a large amount of minerals such as silicate, aluminate and the like with low activity in the nickel slag and the concrete tail slurry on the basis that the nickel slag and the concrete tail slurry provide partial siliceous raw materials and calcareous raw materials, and promotes CO under the induction of the crystal nucleus agent 2 With nickel slag and concreteCalcium silicate component in the tailings produces CaCO 3 And SiO 2 The colloid provides reaction conditions for the formation of tobermorite, and further enhances the compressive strength of the aerated concrete wall material.
Detailed Description
The technical scheme of the invention is further described in detail below by combining examples.
The nickel slag adopted by the invention is purchased from Jiangsu Delong nickel industry Co., ltd, and is solid waste slag generated by smelting ferronickel alloy, wherein the content of magnesium oxide is more than or equal to 10%, and the content of silicon dioxide is more than or equal to 40%. The concrete tail slurry is obtained by cleaning a place, cleaning a mixer truck, cleaning a mixer instrument and separating sand and stone, and is purchased from a tripod building material group company of Jiangsu, and comprises unhydrated cement paste, mineral powder, fly ash and fine sand ore, and the solid content is 25-35%. The cement is 42.5 ordinary Portland cement or Portland cement. The lime is industrial grade quicklime, and the screen residue of the quicklime passing through a 80 mu m square hole screen is 8% -15%. The gypsum is desulfurized gypsum, caSO thereof 4 ·2H 2 The O content is more than or equal to 92 percent. The aluminum powder paste is industrial aluminum powder paste, and the content of active aluminum is more than or equal to 90 percent.
Example 1
The raw material components of this example are shown in table 1 below.
TABLE 1 raw material components of example 1
| Sequence number | Raw materials | Content/part |
| 1 | Nickel slag | 25 |
| 2 | Concrete tail slurry | 100 |
| 3 | Cement and its preparation method | 8 |
| 4 | Lime | 15 |
| 5 | Gypsum plaster | 3 |
| 6 | Aluminum powder paste | 0.12 |
| 7 | Nucleating agent | 3 |
Wherein, the nucleating agent is prepared by the following steps: to Ca (OH) with a concentration of 1-1.2mol/L 2 Adding Ba (OH) into the suspension 2 And polyethylene glycol, CO 2 Ca (OH) at a temperature of 20-25 ℃ is injected at a rate of 90-120ml/min 2 Preparing a crystal nucleus agent in the suspension for 15-30 min; wherein Ba (OH) 2 And polyethylene glycol in Ca (OH) 2 5% and 3% by mass.
The method for preparing the carbon-fixing aerated concrete wall material product based on the nickel slag and the concrete tail slurry comprises the following steps of:
(1) Mixing and stirring: mixing nickel slag, concrete tail slurry and gypsum uniformly, adding cement and lime, stirring for 30-45s, and finally adding aluminum powder paste and a crystal nucleus agent, stirring for 5-10s to prepare mixed slurry;
(2) Slurry injection molding: injecting the uniformly stirred mixed slurry into a test piece sprayed with a release agent;
(3) And (5) standing and maintaining: the test piece is sent into a curing workshop for static foaming, the curing temperature is 50-60 ℃, and the test piece is cured for 4-6 hours;
(4) Demolding and cutting: cutting according to requirements by adopting a cutting machine, and removing non-conforming parts such as damaged parts and the like;
(5) Carbonizing and curing: conveying the cut aerated brick blank to a carbonization kettle by using a rail car, and carrying out CO at the temperature of 82 DEG C 2 And (3) under the condition of the pressure of 2.4MPa, carbonizing and curing for 2 hours, and taking out of the kettle to obtain the carbon-fixing aerated concrete wall material product.
Example 2
The raw material components of this example are shown in table 2 below.
TABLE 2 raw material components of example 2
| Sequence number | Raw materials | Content/part |
| 1 | Nickel slag | 32 |
| 2 | Concrete tail slurry | 90 |
| 3 | Cement and its preparation method | 12 |
| 4 | Lime | 16 |
| 5 | Gypsum plaster | 4 |
| 6 | Aluminum powder paste | 0.1 |
| 7 | Nucleating agent | 2 |
Wherein, the nucleating agent is prepared by the following steps: to Ca (OH) with a concentration of 1-1.2mol/L 2 Adding Ba (OH) into the suspension 2 And polyethylene glycol, CO 2 Ca (OH) at a temperature of 20-25 ℃ is injected at a rate of 90-120ml/min 2 Preparing a crystal nucleus agent in the suspension for 15-30 min; wherein Ba (OH) 2 And polyethylene glycol in Ca (OH) 2 4% and 4% by mass.
The method for preparing the carbon-fixing aerated concrete wall material product based on the nickel slag and the concrete tail slurry comprises the following steps of:
(1) Mixing and stirring: mixing nickel slag, concrete tail slurry and gypsum uniformly, adding cement and lime, stirring for 30-45s, and finally adding aluminum powder paste and a crystal nucleus agent, stirring for 5-10s to prepare mixed slurry;
(2) Slurry injection molding: injecting the uniformly stirred mixed slurry into a test piece sprayed with a release agent;
(3) And (5) standing and maintaining: the test piece is sent into a curing workshop for static foaming, the curing temperature is 50-60 ℃, and the test piece is cured for 4-6 hours;
(4) Demolding and cutting: cutting according to requirements by adopting a cutting machine, and removing non-conforming parts such as damaged parts and the like;
(5) Carbonizing and curing: conveying the cut aerated brick blank to a carbonization kettle by using a rail car, and carrying out CO at 80 DEG C 2 And (3) under the condition of the pressure of 2.0MPa, carbonizing and curing for 2 hours, and taking out of the kettle to obtain the carbon-fixing aerated concrete wall material product.
Example 3
The raw material components of this example are shown in table 3 below.
TABLE 3 raw material components of example 3
| Sequence number | Raw materials | Content/part |
| 1 | Nickel slag | 30 |
| 2 | Concrete tail slurry | 96 |
| 3 | Cement and its preparation method | 9 |
| 4 | Lime | 20 |
| 5 | Gypsum plaster | 3 |
| 6 | Aluminum powder paste | 0.08 |
| 7 | Nucleating agent | 4 |
Wherein, the nucleating agent is prepared by the following steps: to Ca (OH) with a concentration of 1-1.2mol/L 2 Adding Ba (OH) into the suspension 2 And polyethylene glycol, CO 2 Ca (OH) at a temperature of 20-25 ℃ is injected at a rate of 90-120ml/min 2 Preparing a crystal nucleus agent in the suspension for 15-30 min; wherein Ba (OH) 2 And polyethylene glycol in Ca (OH) 2 6% and 2% of the mass.
The method for preparing the carbon-fixing aerated concrete wall material product based on the nickel slag and the concrete tail slurry comprises the following steps of:
(1) Mixing and stirring: mixing nickel slag, concrete tail slurry and gypsum uniformly, adding cement and lime, stirring for 30-45s, and finally adding aluminum powder paste and a crystal nucleus agent, stirring for 5-10s to prepare mixed slurry;
(2) Slurry injection molding: injecting the uniformly stirred mixed slurry into a test piece sprayed with a release agent;
(3) And (5) standing and maintaining: the test piece is sent into a curing workshop for static foaming, the curing temperature is 50-60 ℃, and the test piece is cured for 4-6 hours;
(4) Demolding and cutting: cutting according to requirements by adopting a cutting machine, and removing non-conforming parts such as damaged parts and the like;
(5) Carbonizing and curing: conveying the cut aerated brick blank to a carbonization kettle by using a rail car, and carrying out CO at the temperature of 82 DEG C 2 And (3) under the condition of the pressure of 2.4MPa, carbonizing and curing for 2 hours, and taking out of the kettle to obtain the carbon-fixing aerated concrete wall material product.
Example 4
The raw material components of this example are shown in table 4 below.
TABLE 4 raw material components of example 4
| Sequence number | Raw materials | Content/part |
| 1 | Nickel slag | 28 |
| 2 | Concrete tail slurry | 92 |
| 3 | Cement and its preparation method | 10 |
| 4 | Lime | 18 |
| 5 | Gypsum plaster | 4 |
| 6 | Aluminum powder paste | 0.11 |
| 7 | Nucleating agent | 4 |
Wherein, the nucleating agent is prepared by the following steps: to Ca (OH) with a concentration of 1-1.2mol/L 2 Adding Ba (OH) into the suspension 2 And polyethylene glycol, CO 2 Ca (OH) at a temperature of 20-25 ℃ is injected at a rate of 90-120ml/min 2 Preparing a crystal nucleus agent in the suspension for 15-30 min; wherein Ba (OH) 2 And polyethylene glycol in Ca (OH) 2 5% and 5% by mass.
The method for preparing the carbon-fixing aerated concrete wall material product based on the nickel slag and the concrete tail slurry comprises the following steps of:
(1) Mixing and stirring: mixing nickel slag, concrete tail slurry and gypsum uniformly, adding cement and lime, stirring for 30-45s, and finally adding aluminum powder paste and a crystal nucleus agent, stirring for 5-10s to prepare mixed slurry;
(2) Slurry injection molding: injecting the uniformly stirred mixed slurry into a test piece sprayed with a release agent;
(3) And (5) standing and maintaining: the test piece is sent into a curing workshop for static foaming, the curing temperature is 50-60 ℃, and the test piece is cured for 4-6 hours;
(4) Demolding and cutting: cutting according to requirements by adopting a cutting machine, and removing non-conforming parts such as damaged parts and the like;
(5) Carbonizing and curing: conveying the cut aerated brick blank to a carbonization kettle by using a rail car, and carrying out CO at 90 DEG C 2 And (3) under the condition of 3MPa, carbonizing and curing for 3 hours, and taking out of the kettle to obtain the carbon-fixing aerated concrete wall material product.
Example 5
The raw material components of this example are shown in table 5 below.
TABLE 5 raw material components of example 5
| Sequence number | Raw materials | Content/part |
| 1 | Nickel slag | 26 |
| 2 | Concrete tail slurry | 95 |
| 3 | Cement and its preparation method | 11 |
| 4 | Lime | 19 |
| 5 | Gypsum plaster | 3 |
| 6 | Aluminum powder paste | 0.09 |
| 7 | Nucleating agent | 3 |
Wherein, the nucleating agent is prepared by the following steps: to Ca (OH) with a concentration of 1-1.2mol/L 2 Adding Ba (OH) into the suspension 2 And polyethylene glycol, CO 2 Ca (OH) at a temperature of 20-25 ℃ is injected at a rate of 90-120ml/min 2 Preparing a crystal nucleus agent in the suspension for 15-30 min; wherein Ba (OH) 2 And polyethylene glycol in Ca (OH) 2 4% and 5% by mass。
The method for preparing the carbon-fixing aerated concrete wall material product based on the nickel slag and the concrete tail slurry comprises the following steps of:
(1) Mixing and stirring: mixing nickel slag, concrete tail slurry and gypsum uniformly, adding cement and lime, stirring for 30-45s, and finally adding aluminum powder paste and a crystal nucleus agent, stirring for 5-10s to prepare mixed slurry;
(2) Slurry injection molding: injecting the uniformly stirred mixed slurry into a test piece sprayed with a release agent;
(3) And (5) standing and maintaining: the test piece is sent into a curing workshop for static foaming, the curing temperature is 50-60 ℃, and the test piece is cured for 4-6 hours;
(4) Demolding and cutting: cutting according to requirements by adopting a cutting machine, and removing non-conforming parts such as damaged parts and the like;
(5) Carbonizing and curing: conveying the cut aerated brick blank to a carbonization kettle by using a rail car, and carrying out CO at 90 DEG C 2 And (3) under the condition of 3.0MPa, carbonizing and curing for 2 hours, and taking out of the kettle to obtain the carbon-fixing aerated concrete wall material product.
Comparative example 1
The basic procedure is the same as in example 1, except that the existing hydrated magnesium silicate nucleating agent is used as the nucleating agent.
Comparative example 2
The basic procedure is the same as in example 1, except that the existing sodium silicate nucleating agent is used as the nucleating agent.
The carbon-fixing aerated concrete wall products prepared in examples 1-5 and comparative examples 1-2 were subjected to dry density and strength tests, and the test results are summarized in Table 6.
Table 6 test results of aerated concrete blocks of examples 1-5 and comparative examples 1-2
| Examples | Dry density/(kg. M) -3 ) | Compressive Strength/MPa |
| Example 1 | 609 | 3.6 |
| Example 2 | 621 | 3.5 |
| Example 3 | 623 | 3.9 |
| Example 4 | 617 | 3.7 |
| Example 5 | 606 | 3.6 |
| Comparative example 1 | 652 | 1.9 |
| Comparative example 2 | 640 | 1.8 |
As can be seen from Table 6, the compressive strength of the aerated concrete wall products prepared by combining specific nucleating agents and carbonization and oxidation modes based on nickel slag and concrete tail slurry of the invention is obviously higher than that of comparative examples 1 and 2, thereby embodying the base of the inventionUnder the carbonization and oxidation process, a specific crystal nucleus agent is combined, so that a large amount of minerals such as silicate, aluminate and the like with low activity in nickel slag and concrete tail slurry can be fully excited at the same time, and CO is promoted 2 Generates CaCO with calcium silicate component in nickel slag and concrete tail slurry 3 And SiO 2 The colloid provides reaction conditions for the formation of tobermorite, and further enhances the compressive strength of the aerated concrete wall material.
Claims (6)
1. The carbon-fixing aerated concrete wall material product based on nickel slag and concrete tail slurry is characterized by comprising the following raw materials in parts by weight: 25-32 parts of nickel slag, 90-100 parts of concrete tail slurry, 3-4 parts of gypsum, 8-12 parts of cement, 15-20 parts of lime, 0.08-0.12 part of aluminum powder paste and 2-4 parts of nucleating agent.
2. The carbon-stabilized aerated concrete wall product of claim 1, wherein: the nucleating agent is prepared by the following steps: to Ca (OH) with a concentration of 1-1.2mol/L 2 Adding Ca (OH) to the suspension 2 Ba (OH) with mass of 4-6% 2 And 2-5% polyethylene glycol, CO 2 Ca (OH) at a temperature of 20-50deg.C is injected at a rate of 90-120ml/min 2 The crystal nucleus agent is prepared after 15-30min in suspension.
3. The carbon-stabilized aerated concrete wall product of claim 1, wherein: the nickel slag is solid waste slag generated by smelting ferronickel alloy, wherein the content of magnesium oxide is more than or equal to 10%, and the content of silicon dioxide is more than or equal to 40%.
4. The carbon-stabilized aerated concrete wall product of claim 1, wherein: the solid content of the concrete tail slurry is 25-35%, the fineness is less than 20% of the screen residue of a square hole screen with 0.2mm, and the calcium oxide content is more than or equal to 30%.
5. A method of making the carbon-stabilized aerated concrete wall product of claim 1, comprising the steps of:
(1) Preparing a blank: mixing nickel slag, concrete tail slurry and gypsum uniformly, adding cement and lime, stirring for 30-45s, adding aluminum powder paste and a crystal nucleus agent, stirring for 5-10s to obtain mixed slurry, and performing film injection, static curing and demoulding to obtain a blank;
(2) Carbonizing and curing: placing the blank at 80-90deg.C and CO 2 And under the condition of the pressure of 2-3MPa, carbonizing and curing for 2-3 hours to obtain the carbon-fixing aerated concrete wall material product.
6. The method of making a carbon-stabilized aerated concrete wall product of claim 5, wherein: in the step (1), the static curing is that the static curing is carried out for 4-6 hours at 50-60 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310566446.XA CN116715497A (en) | 2023-05-19 | 2023-05-19 | Carbon-fixing aerated concrete wall material product based on nickel slag and concrete tail slurry and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310566446.XA CN116715497A (en) | 2023-05-19 | 2023-05-19 | Carbon-fixing aerated concrete wall material product based on nickel slag and concrete tail slurry and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116715497A true CN116715497A (en) | 2023-09-08 |
Family
ID=87866902
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310566446.XA Pending CN116715497A (en) | 2023-05-19 | 2023-05-19 | Carbon-fixing aerated concrete wall material product based on nickel slag and concrete tail slurry and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116715497A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116968175A (en) * | 2023-09-22 | 2023-10-31 | 北京工业大学 | Mixing method for improving carbon fixation effect of cement-based material |
-
2023
- 2023-05-19 CN CN202310566446.XA patent/CN116715497A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116968175A (en) * | 2023-09-22 | 2023-10-31 | 北京工业大学 | Mixing method for improving carbon fixation effect of cement-based material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110642585B (en) | Aerated concrete block and preparation process thereof | |
| CN105777184B (en) | Autoclaved aerated concrete building block adopting ceramic polishing waste and preparation method thereof | |
| CN112125584B (en) | Preparation method of low-hydration-heat green self-leveling concrete | |
| CN103159450B (en) | Production method of foamed concrete block manufactured from steel slag | |
| CN101769034B (en) | Novel lightweight brick | |
| CN109626932B (en) | Autoclaved aerated concrete plate and preparation method thereof | |
| CN111559899A (en) | Recycled material terrace brick and preparation method thereof | |
| CN114380518B (en) | Bayer process red mud-phosphogypsum baking-free cementing material and preparation method thereof | |
| CN112079583A (en) | Building material product based on rapid carbonization of regenerated cementing material and preparation method thereof | |
| CN111807858A (en) | Industrial solid waste autoclaved aerated concrete block and preparation method thereof | |
| CN110950619A (en) | Preparation method for producing autoclaved aerated concrete from lithium slag and product thereof | |
| CN111499329B (en) | Autoclaved sand-lime brick containing steel slag tail mud and preparation method thereof | |
| CN111848053A (en) | Fly ash-based nano-micron crystal nucleus additive suitable for concrete prefabricated part and preparation method and application thereof | |
| CN114804782A (en) | Carbonized steel slag building material product prepared by using cement kiln tail flue gas and method thereof | |
| CN116715497A (en) | Carbon-fixing aerated concrete wall material product based on nickel slag and concrete tail slurry and preparation method thereof | |
| CN103145362A (en) | Method for preparing cement concrete early strength agent by using industrial residue | |
| CN111410508A (en) | Preparation method and application of building product based on power plant solid waste and carbon dioxide | |
| CN101863068A (en) | Method for producing autoclaved brick by residue of aluminum-extracted pulverized fuel ash | |
| CN104129938A (en) | Mineral admixture for concrete tubular pile and preparation method thereof | |
| CN111559896A (en) | Foaming phosphogypsum building block and preparation method thereof | |
| CN115893967A (en) | Low-carbon type multi-element composite early-strength steam-curing-free concrete prefabricated part and preparation method thereof | |
| CN114890809A (en) | Steel slag-based high-carbon-fixation-quantity non-autoclaved aerated concrete and preparation method thereof | |
| CN102815880A (en) | Process for producing bricks by using saponification residual slag | |
| CN114988835A (en) | Carbide slag-based high-solid-carbon-content non-autoclaved aerated concrete and preparation method thereof | |
| CN114853417A (en) | High-toughness low-carbon anti-knock cement-based composite material and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |