CN117383888B - Nickel slag aggregate concrete manufacturing method - Google Patents
Nickel slag aggregate concrete manufacturing method Download PDFInfo
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- CN117383888B CN117383888B CN202311451776.0A CN202311451776A CN117383888B CN 117383888 B CN117383888 B CN 117383888B CN 202311451776 A CN202311451776 A CN 202311451776A CN 117383888 B CN117383888 B CN 117383888B
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 270
- 239000002893 slag Substances 0.000 title claims abstract description 152
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 135
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000003756 stirring Methods 0.000 claims abstract description 18
- 239000002245 particle Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 13
- 238000004381 surface treatment Methods 0.000 claims abstract description 13
- 238000012986 modification Methods 0.000 claims abstract description 10
- 230000004048 modification Effects 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 37
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 16
- 239000003638 chemical reducing agent Substances 0.000 claims description 15
- 239000000243 solution Substances 0.000 claims description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 14
- 239000012744 reinforcing agent Substances 0.000 claims description 14
- 238000001035 drying Methods 0.000 claims description 12
- 239000004568 cement Substances 0.000 claims description 11
- 239000008367 deionised water Substances 0.000 claims description 11
- 229910021641 deionized water Inorganic materials 0.000 claims description 11
- 239000004576 sand Substances 0.000 claims description 10
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 9
- 238000001914 filtration Methods 0.000 claims description 9
- 239000004575 stone Substances 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 8
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 claims description 8
- 229910052742 iron Inorganic materials 0.000 claims description 7
- OZAIFHULBGXAKX-UHFFFAOYSA-N 2-(2-cyanopropan-2-yldiazenyl)-2-methylpropanenitrile Chemical compound N#CC(C)(C)N=NC(C)(C)C#N OZAIFHULBGXAKX-UHFFFAOYSA-N 0.000 claims description 6
- YPCMISLZCVOUJB-UHFFFAOYSA-N 4-cyano-4-methyl-5-phenyl-5-sulfanylidenepentanoic acid Chemical compound OC(=O)CCC(C)(C#N)C(=S)C1=CC=CC=C1 YPCMISLZCVOUJB-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims description 6
- QDOXWKRWXJOMAK-UHFFFAOYSA-N dichromium trioxide Chemical compound O=[Cr]O[Cr]=O QDOXWKRWXJOMAK-UHFFFAOYSA-N 0.000 claims description 6
- STVZJERGLQHEKB-UHFFFAOYSA-N ethylene glycol dimethacrylate Chemical compound CC(=C)C(=O)OCCOC(=O)C(C)=C STVZJERGLQHEKB-UHFFFAOYSA-N 0.000 claims description 6
- 238000010438 heat treatment Methods 0.000 claims description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims description 6
- 239000012266 salt solution Substances 0.000 claims description 5
- 239000002253 acid Substances 0.000 claims description 4
- -1 polypropylene Polymers 0.000 claims description 4
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- 239000004743 Polypropylene Substances 0.000 claims description 3
- 239000006087 Silane Coupling Agent Substances 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 230000002378 acidificating effect Effects 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 229910052681 coesite Inorganic materials 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 229910052593 corundum Inorganic materials 0.000 claims description 3
- 229910052906 cristobalite Inorganic materials 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 238000002386 leaching Methods 0.000 claims description 3
- 150000002815 nickel Chemical class 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 229920001155 polypropylene Polymers 0.000 claims description 3
- 239000002244 precipitate Substances 0.000 claims description 3
- 239000000377 silicon dioxide Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 229910052682 stishovite Inorganic materials 0.000 claims description 3
- 229910052905 tridymite Inorganic materials 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 229910001845 yogo sapphire Inorganic materials 0.000 claims description 3
- 229920002748 Basalt fiber Polymers 0.000 claims description 2
- 239000003365 glass fiber Substances 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 239000002910 solid waste Substances 0.000 abstract description 4
- 239000002440 industrial waste Substances 0.000 abstract description 3
- 238000004064 recycling Methods 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- 230000000740 bleeding effect Effects 0.000 description 4
- 239000000292 calcium oxide Substances 0.000 description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical group CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 229920005646 polycarboxylate Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- URDOJQUSEUXVRP-UHFFFAOYSA-N 3-triethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CCO[Si](OCC)(OCC)CCCOC(=O)C(C)=C URDOJQUSEUXVRP-UHFFFAOYSA-N 0.000 description 1
- XDLMVUHYZWKMMD-UHFFFAOYSA-N 3-trimethoxysilylpropyl 2-methylprop-2-enoate Chemical compound CO[Si](OC)(OC)CCCOC(=O)C(C)=C XDLMVUHYZWKMMD-UHFFFAOYSA-N 0.000 description 1
- AHHHDTLXONDKQF-UHFFFAOYSA-N 6-methyl-1h-pyrimidin-2-one Chemical group CC1=CC=NC(O)=N1 AHHHDTLXONDKQF-UHFFFAOYSA-N 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- 150000004645 aluminates Chemical class 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 238000007334 copolymerization reaction Methods 0.000 description 1
- 239000007822 coupling agent Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 description 1
- MBGQQKKTDDNCSG-UHFFFAOYSA-N ethenyl-diethoxy-methylsilane Chemical compound CCO[Si](C)(C=C)OCC MBGQQKKTDDNCSG-UHFFFAOYSA-N 0.000 description 1
- MABAWBWRUSBLKQ-UHFFFAOYSA-N ethenyl-tri(propan-2-yloxy)silane Chemical compound CC(C)O[Si](OC(C)C)(OC(C)C)C=C MABAWBWRUSBLKQ-UHFFFAOYSA-N 0.000 description 1
- 125000001033 ether group Chemical group 0.000 description 1
- 229910052839 forsterite Inorganic materials 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 239000003673 groundwater Substances 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 229910001608 iron mineral Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 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
- 238000005259 measurement Methods 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 229940051841 polyoxyethylene ether Drugs 0.000 description 1
- 229920000056 polyoxyethylene ether Polymers 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 238000003809 water extraction Methods 0.000 description 1
Classifications
-
- 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
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a method for manufacturing nickel slag aggregate concrete, which belongs to the technical field of recycling treatment and application of industrial waste slag, and comprises the following steps: (1) Nickel slag with certain particle size is screened and surface modification treatment is carried out to obtain nickel slag aggregate; (2) Replacing part of the aggregate in concrete production with the nickel slag aggregate, mixing all the components of the concrete in a stirrer, and uniformly stirring to obtain the nickel slag aggregate concrete; the surface treatment comprises pretreatment and modification treatment; the invention improves the mixing amount of the nickel slag as concrete aggregate by carrying out surface treatment on the nickel slag while ensuring good basic performance, and provides an economic and safe application way for nickel slag solid waste.
Description
Technical Field
The invention relates to the technical field of recycling treatment and application of industrial waste residues, in particular to a method for manufacturing nickel slag aggregate concrete.
Background
The nickel ore can discharge a large amount of high-temperature slag in the smelting process, the nickel slag is obtained after water extraction, the slag yield almost accounts for 80% -90% of the raw material amount, and the nickel slag becomes the fourth major smelting industrial waste residue after the continuous slag, steel slag and red mud in China. It is expected that significant amounts of nickel slag will be produced annually over the next 30-40 years. At present, the comprehensive utilization rate of nickel slag in China is low, and the treatment mode is mostly open-air stockpiling or landfill, so that resources are wasted, a large amount of land is occupied, the surrounding ecological environment is destroyed, and the sustainable development of the nickel-iron industry is severely restricted. For many years, numerous researchers have been looking for various measures and means to treat such solid waste residues scientifically, reasonably, economically and safely to reduce or eliminate the pollution and damage of the solid waste residues to local soil and groundwater.
The main mineral phase of the nickel slag is pure forsterite, the chemical components are FeO, mgO, siO 2 as main components, the nickel slag has a certain volcanic ash activity, and the nickel slag is an efficient utilization way as a cement mixture; from the current research situation, the current nickel slag is mainly researched by grinding the nickel slag by utilizing the hydration activity of the nickel slag and then using the ground nickel slag as a blending material, so that the related documents are more and the research is more in depth; however, the use amount of the nickel slag as an admixture is still not large, the poor grindability of the nickel slag is a main reason for low utilization rate of the nickel slag, and minerals such as silicate, aluminate and the like contained in the nickel slag have potential gelling activity and are required to be finely ground to a micro-powder state to excite the gelling activity, but the nickel slag has high mineral crystallinity and contains certain iron minerals, has hard texture and high intrinsic strength, so that the grindability of the nickel slag is poor, and the comprehensive utilization of the nickel slag is severely restricted.
In order to be able to use the nickel slag waste in larger amounts, the use of nickel slag instead of natural aggregate in cement concrete is one of the more effective means. Cement concrete is the material with the largest dosage in construction engineering construction, and aggregate (coarse aggregate and fine aggregate) is usually 70% -80% of the concrete volume, if nickel slag can be used as the aggregate of the concrete to replace natural aggregate, the application force of the nickel slag in the concrete can be obviously improved, the influence of nickel slag piling on the environment is solved, the problem of insufficient supply of the natural aggregate is greatly relieved, and the environmental problem caused by mass exploitation of the natural aggregate is greatly solved. In the prior art, the nickel slag has the application as aggregate, but is generally replaced by a small amount, and the addition amount is still not high, so that on one hand, the higher calcium oxide phase and metal in the nickel slag easily cause poor stability of the concrete; on the other hand, the high-doping nickel slag can cause severe bleeding of concrete, so that aggregates are difficult to fully wrap, even bare, poor in workability and difficult to vibrate and compact in samples.
Disclosure of Invention
The invention provides a method for manufacturing nickel slag aggregate concrete.
The aim of the invention is realized by adopting the following technical scheme:
the preparation method of the nickel slag aggregate concrete comprises the following steps:
(1) Nickel slag with certain particle size is screened and surface treatment is carried out to obtain nickel slag aggregate;
the surface treatment comprises the following steps:
s1, pretreatment
Immersing the nickel slag in an iron and/or nickel salt solution with acidic pH value, standing overnight, filtering out, drying, performing microwave treatment, sequentially immersing the nickel slag subjected to microwave treatment with an acid solution and water, and drying again for later use;
S2, modification treatment
Adding the nickel slag prepared after the pretreatment into deionized water, heating to 50-60 ℃, dropwise adding an ethanol solution of a vinyl silane coupling agent under the stirring condition, continuously stirring for 2-6 hours after the dropwise adding is finished, filtering out precipitate, leaching with the deionized water for more than three times, and drying to obtain a first slag; respectively weighing polyethylene glycol dimethacrylate and 2-urea-4 [1H ] -methyl pyrimidinone methacrylate, dissolving in dimethylformamide solvent, adding 4-cyano-4- (thiobenzoyl) valeric acid and azodiisobutyronitrile, stirring thoroughly, dissolving, introducing nitrogen, and deoxidizing to obtain modified solution; adding the first slag into the modified solution, heating to 50-60 ℃ under a protective atmosphere, preserving heat, stirring, reacting for 12-18h, cooling to room temperature after the reaction is finished, filtering out slag, washing with deionized water, and drying to obtain the nickel slag aggregate;
(2) And replacing part of the aggregate in concrete production with the nickel slag aggregate, mixing all the components of the concrete in a stirrer, and uniformly stirring to obtain the nickel slag aggregate concrete.
In some preferred embodiments, the sum of the ion concentrations of iron and nickel in the salt solution of iron and/or nickel is 0.01-1mol/L.
In some preferred embodiments, the microwave treatment has a treatment power of 0.3-3kW and a microwave treatment time of 1-100min.
In some preferred embodiments, the mass to volume ratio of the vinyl silane coupling agent to the deionized water is 1: (10-100) g/mL; the mass ratio of the polyethylene glycol dimethacrylate to the 2-urea-4 [1H ] -methyl pyrimidinone methacrylate, the 4-cyano-4- (thiobenzoyl) valeric acid and the azodiisobutyronitrile is 10: (1-1.2): (0.025-0.03): (0.015-0.018).
In some preferred embodiments, the nickel slag is blast furnace nickel iron slag, including coarse nickel slag having a particle size of 4.75-25mm and fine nickel slag having a particle size of 0.15-4.75mm.
In some preferred embodiments, the blast furnace nickel iron slag comprises the following components in percentage by mass:
SiO2：35.70％、Al2O3：28.03％、CaO：22.56％、MgO：9.83％、Fe2O3：1.92％、Cr2O3：0.94％、SO3：0.09％, And unavoidable other impurities.
In some preferred embodiments, the vinylsilane coupling agent is vinyltrimethoxysilane, vinyltriethoxysilane, methylvinyldiethoxysilane, vinyltriisopropoxysilane, methacryloxypropyl trimethoxysilane or methacryloxypropyl triethoxysilane.
In some preferred embodiments, the nickel slag aggregate concrete comprises, in parts by weight:
150-200 parts of cement, 360-420 parts of coarse aggregate, 220-250 parts of fine aggregate, 6-15 parts of reinforcing agent, 1.8-3.6 parts of water reducer and 80-180 parts of water; wherein the coarse aggregate consists of coarse nickel slag aggregate and crushed stone, and the fine aggregate consists of fine nickel slag aggregate and fine sand.
In some preferred embodiments, the mass ratio of coarse nickel slag aggregate to crushed stone in the coarse aggregate is (1-4): 1, the mass ratio of the fine nickel slag aggregate to the fine sand in the fine aggregate is (1-4): 1.
In some preferred embodiments, the reinforcing agent is a fibrous reinforcing agent including at least one of polypropylene fibers, basalt fibers, glass fibers, and steel fibers; the length of the fiber reinforcing agent is 10-15mm, and the diameter is 20-30 mu m.
In some preferred embodiments, the water reducer is a polycarboxylate water reducer, including at least one of DH-4005 type, DH-4004 type, DH-701 type.
The beneficial effects of the invention are as follows:
Aiming at the problems of poor stability, low mechanical property and bleeding existing in the nickel slag directly used as concrete aggregate, the invention provides a preparation method of the nickel slag aggregate concrete, which can improve the blending amount of the nickel slag used as the concrete aggregate while ensuring good basic performance by adjusting the particle size of the nickel slag and carrying out surface modification on the nickel slag, thereby providing an economic and safe application way for nickel slag solid waste; specifically, the invention takes the blast furnace nickel iron slag as the raw material, increases the dielectric difference between metal/nonmetal oxides in the nickel slag by preliminary permeation exchange with iron and nickel ions under the acidic condition, forms thermal pressure by microwave treatment, increases the specific surface area of the nickel slag, further reduces the contents of metal and free calcium oxide in the nickel slag by acid washing, not only realizes full resource utilization and increases economic benefit, but also improves the stability of concrete, and the salt solution can be reused without generating secondary waste; furthermore, the workability and compactness of the concrete are improved through modification treatment, bleeding is reduced, and specifically, polyoxyethylene ether chains and methyl pyrimidinone groups are introduced into the surface of nickel slag through an alkenyl copolymerization method, on one hand, the comb-shaped chain structure formed on the surface of the nickel slag is beneficial to improving the adaptability of the nickel slag and the water reducer, bleeding is prevented, and meanwhile, the workability and mechanical properties of the cross-linked structure formed by multiple hydrogen bonds are further improved.
Detailed Description
The invention will be further described with reference to the following examples.
The embodiment of the invention relates to a manufacturing method of nickel slag aggregate concrete, which comprises the following steps of:
185 parts of cement, 396 parts of coarse aggregate, 218 parts of fine aggregate, 11 parts of reinforcing agent, 2.6 parts of water reducer and 100 parts of water;
The cement is P.O42.5, meets the technical index requirements specified in GB175-2007 general Portland Cement, and has the compressive strength of 48MPa after long-term statistics for 28 d;
The coarse aggregate consists of coarse nickel slag aggregate and basalt crushed stone, and the mass ratio of the coarse nickel slag aggregate to the basalt crushed stone is 3.6:1, a step of; the coarse nickel slag aggregate is prepared by performing surface modification on coarse nickel slag, the particle size of the coarse nickel slag is 4.75-25mm, and the mass ratio of nickel slag smaller than 16.0mm in the coarse nickel slag is 40%; the particle size of the basalt crushed stone is 4.75-25mm, and the mass ratio of the stone blocks smaller than 16.0mm in the basalt crushed stone is 40%;
The fine aggregate consists of fine nickel slag aggregate and river sand, wherein the mass ratio of the fine nickel slag aggregate to the river sand is 3.2:1, a step of; the fine nickel slag aggregate is prepared by carrying out surface modification on fine nickel slag, the particle size of the fine nickel slag is 0.15-4.75mm, the mass ratio of nickel slag smaller than 0.25mm in the fine nickel slag is 20%, and the mass ratio of nickel slag larger than 0.5mm is 40%; the grain diameter of the river sand is 0.15-4.75mm, the mass ratio of fine sand smaller than 0.25mm in the river sand is 20%, and the mass ratio of coarse sand larger than 0.5mm is 40%;
the coarse nickel slag and the fine nickel slag are both blast furnace nickel-iron slag, and the blast furnace nickel-iron slag comprises ：SiO2：35.70％、Al2O3：28.03％、CaO：22.56％、MgO：9.83％、Fe2O3：1.92％、Cr2O3：0.94％、SO3：0.09％, and unavoidable other impurities according to mass percent;
The reinforcing agent is polypropylene fiber, the length is 10-15mm, and the diameter is 20-30 mu m;
the water reducer is a polycarboxylate water reducer DH-4005;
the water is tap water.
Example 1
The embodiment relates to nickel slag aggregate concrete, which comprises the following components in parts by weight:
185 parts of cement, 396 parts of coarse aggregate, 218 parts of fine aggregate, 11 parts of reinforcing agent, 2.6 parts of water reducer and 100 parts of water;
the manufacturing method comprises the following steps:
(1) Nickel slag with certain particle size is screened and surface treatment is carried out to obtain nickel slag aggregate;
the surface treatment comprises the following steps:
s1, pretreatment
Immersing the nickel slag in a mixed aqueous solution of ferric chloride (0.04 mol/L) and hydrochloric acid (0.02 mol/L), standing overnight, filtering out, drying, performing microwave treatment, immersing the nickel slag after microwave treatment in a hydrochloric acid solution of 1mol/L and water in sequence, and drying again for later use; the treatment power of the microwave treatment is 1.2kW, and the microwave treatment time is 24min;
S2, modification treatment
Adding the nickel slag obtained after the pretreatment into deionized water, heating to 50 ℃, dropwise adding an ethanol solution (10%) of vinyltrimethoxysilane under the stirring condition, continuously stirring for 2 hours after the dropwise adding is finished, filtering out precipitate, leaching with the deionized water for more than three times, and drying to obtain a first slag; respectively weighing polyethylene glycol dimethacrylate (CAS number: 26570-48-9) and 2-urea-4 [1H ] -methyl pyrimidinone methacrylate, dissolving in dimethylformamide solvent, adding 4-cyano-4- (thiobenzoyl) valeric acid and azodiisobutyronitrile, stirring thoroughly, dissolving, introducing nitrogen, and deoxidizing to obtain modified solution; adding the first slag into the modified solution according to the liquid-to-material ratio of 10mL/g, heating to 50 ℃ under the protection atmosphere, preserving heat, stirring and reacting for 14h, cooling to room temperature after the reaction is finished, filtering out slag, washing with deionized water, and drying to obtain the nickel slag aggregate;
Wherein the mass volume ratio of the vinyl trimethoxy silane to the deionized water is 1:20g/mL; the mass ratio of the polyethylene glycol dimethacrylate to the 2-urea-4 [1H ] -methyl pyrimidinone methacrylate, the 4-cyano-4- (thiobenzoyl) valeric acid and the azodiisobutyronitrile is 10:1.1:0.028:0.016;
(2) And replacing part of the aggregate in concrete production with the nickel slag aggregate, mixing all the components of the concrete in a stirrer, and uniformly stirring to obtain the nickel slag aggregate concrete.
Example 2
The embodiment relates to nickel slag aggregate concrete, which comprises the following components in parts by weight:
185 parts of cement, 396 parts of coarse aggregate, 218 parts of fine aggregate, 11 parts of reinforcing agent, 2.6 parts of water reducer and 100 parts of water;
the manufacturing method comprises the following steps:
(1) Nickel slag with certain particle size is screened and surface treatment is carried out to obtain nickel slag aggregate;
the surface treatment is the same as in example 1, except that step S2 is not included;
(2) And replacing part of the aggregate in concrete production with the nickel slag aggregate, mixing all the components of the concrete in a stirrer, and uniformly stirring to obtain the nickel slag aggregate concrete.
Example 3
The embodiment relates to nickel slag aggregate concrete, which comprises the following components in parts by weight:
185 parts of cement, 396 parts of coarse aggregate, 218 parts of fine aggregate, 11 parts of reinforcing agent, 2.6 parts of water reducer and 100 parts of water;
the manufacturing method comprises the following steps:
(1) Nickel slag with certain particle size is screened and surface treatment is carried out to obtain nickel slag aggregate;
the surface treatment is the same as in example 1, except that step S1 is not included;
(2) And replacing part of the aggregate in concrete production with the nickel slag aggregate, mixing all the components of the concrete in a stirrer, and uniformly stirring to obtain the nickel slag aggregate concrete.
Comparative example
The nickel slag aggregate concrete comprises the following components in parts by weight:
185 parts of cement, 396 parts of coarse aggregate, 218 parts of fine aggregate, 11 parts of reinforcing agent, 2.6 parts of water reducer and 100 parts of water;
The manufacturing method is the same as in example 1, except that the surface treatment described in step (1) is not included.
Experimental example
To further verify the effect of the present invention, performance tests were conducted on the concrete materials prepared in examples 1 to 3 and comparative examples, wherein the compressive strength and flexural strength were measured with reference to GB/T50081-2002 "Standard for test method for mechanical Properties of ordinary concrete", and the durability was measured with reference to GB/T50082-2009 "Standard for test method for Long-term Properties and durability of ordinary concrete"; the working performance detection is measured by referring to GB/T50081-2016 standard of common concrete mixture performance test method; the measurement results are shown in the following table:
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention.
Claims (8)
1. The manufacturing method of the nickel slag aggregate concrete is characterized by comprising the following steps of:
(1) Nickel slag with certain particle size is screened and surface treatment is carried out to obtain nickel slag aggregate;
The nickel slag is blast furnace nickel iron slag, and comprises coarse nickel slag and fine nickel slag, wherein the particle size of the coarse nickel slag is 4.75-25mm, and the particle size of the fine nickel slag is 0.15-4.75mm;
the surface treatment comprises the following steps:
s1, pretreatment
Immersing the nickel slag in an iron and/or nickel salt solution with acidic pH value, standing overnight, filtering out, drying, performing microwave treatment, sequentially immersing the nickel slag subjected to microwave treatment with an acid solution and water, and drying again for later use;
S2, modification treatment
Adding the nickel slag prepared after the pretreatment into deionized water, heating to 50-60 ℃, dropwise adding an ethanol solution of a vinyl silane coupling agent under the stirring condition, continuously stirring for 2-6 hours after the dropwise adding is finished, filtering out precipitate, leaching with the deionized water for more than three times, and drying to obtain a first slag; respectively weighing polyethylene glycol dimethacrylate and 2-urea-4 [1H ] -methyl pyrimidinone methacrylate, dissolving in dimethylformamide solvent, adding 4-cyano-4- (thiobenzoyl) valeric acid and azodiisobutyronitrile, stirring thoroughly, dissolving, introducing nitrogen, and deoxidizing to obtain modified solution; adding the first slag into the modified solution, heating to 50-60 ℃ under a protective atmosphere, preserving heat, stirring, reacting for 12-18h, cooling to room temperature after the reaction is finished, filtering out slag, washing with deionized water, and drying to obtain the nickel slag aggregate;
(2) Replacing part of the aggregate in concrete production with the nickel slag aggregate, mixing all the components of the concrete in a stirrer, and uniformly stirring to obtain the nickel slag aggregate concrete;
the nickel slag aggregate concrete comprises the following components in parts by weight:
150-200 parts of cement, 360-420 parts of coarse aggregate, 220-250 parts of fine aggregate, 6-15 parts of reinforcing agent, 1.8-3.6 parts of water reducer and 80-180 parts of water; wherein the coarse aggregate consists of coarse nickel slag aggregates and crushed stone blocks, and the fine aggregate consists of fine nickel slag aggregates and fine sand;
the reinforcing agent is a fiber reinforcing agent; the water reducer is a polycarboxylic acid water reducer.
2. The method for manufacturing the nickel slag aggregate concrete according to claim 1, wherein the sum of ion concentrations of iron and nickel in the iron and/or nickel salt solution is 0.01-1mol/L.
3. The method for manufacturing the nickel slag aggregate concrete according to claim 1, wherein the treatment power of the microwave treatment is 0.3-3kW, and the microwave treatment time is 1-100min.
4. The method for manufacturing nickel slag aggregate concrete according to claim 1, wherein the mass ratio of the polyethylene glycol dimethacrylate to the 2-urea-4 [1H ] -methyl pyrimidinone methacrylate, the 4-cyano-4- (thiobenzoyl) valeric acid and the azodiisobutyronitrile is 10: (1-1.2): (0.025-0.03): (0.015-0.018).
5. The method for manufacturing the nickel slag aggregate concrete according to claim 1, wherein the components of the blast furnace nickel iron slag are calculated according to mass percent and comprise:
SiO2：35.70％、Al2O3：28.03％、CaO：22.56％、MgO：9.83％、Fe2O3：1.92％、Cr2O3：0.94％、SO3：0.09％, And unavoidable other impurities.
6. The method for manufacturing the nickel slag aggregate concrete according to claim 1, wherein the mass ratio of the coarse nickel slag aggregate to the crushed stone in the coarse aggregate is (1-4): 1, the mass ratio of the fine nickel slag aggregate to the fine sand in the fine aggregate is (1-4): 1.
7. The method for manufacturing nickel slag aggregate concrete according to claim 1, wherein the reinforcing agent comprises at least one of polypropylene fiber, basalt fiber, glass fiber and steel fiber; the length of the fiber is 10-15mm, and the diameter is 20-30 mu m.
8. The method for manufacturing nickel slag aggregate concrete according to claim 1, wherein the water reducing agent comprises at least one of DH-4005 type, DH-4004 type and DH-701 type.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892871A (en) * | 2015-06-16 | 2015-09-09 | 厦门大学 | Hydrogel with self-repairing function and preparation method of hydrogel |
| CN113896494A (en) * | 2021-11-16 | 2022-01-07 | 吴联权 | Ferronickel slag building material and preparation method thereof |
| CN114349403A (en) * | 2021-12-31 | 2022-04-15 | 盐城市国泰混凝土有限公司 | Environment-friendly premixed concrete prepared from construction waste |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3305527B2 (en) * | 1995-01-25 | 2002-07-22 | 東芝タンガロイ株式会社 | Polyhedral shaped chip made of crystal-oriented cemented carbide and method of manufacturing the same |
| JP4780575B2 (en) * | 2002-03-18 | 2011-09-28 | 独立行政法人産業技術総合研究所 | Cemented carbide sheet manufacturing method |
| RU2425906C1 (en) * | 2010-01-25 | 2011-08-10 | Общество с ограниченной ответственностью Научно-производственное предприятие "Эверест-124" | Procedure for application of heat protecting wear resistant coating on items of iron and steel |
| CN106435429A (en) * | 2016-11-18 | 2017-02-22 | 无锡明盛纺织机械有限公司 | Magnesium alloy resistant to abrasion and corrosion and preparation method thereof |
| CN106350759A (en) * | 2016-11-18 | 2017-01-25 | 无锡明盛纺织机械有限公司 | Wear-resistant and corrosion-resistant magnesium alloy and preparation method thereof |
-
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- 2023-11-03 CN CN202311451776.0A patent/CN117383888B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104892871A (en) * | 2015-06-16 | 2015-09-09 | 厦门大学 | Hydrogel with self-repairing function and preparation method of hydrogel |
| CN113896494A (en) * | 2021-11-16 | 2022-01-07 | 吴联权 | Ferronickel slag building material and preparation method thereof |
| CN114349403A (en) * | 2021-12-31 | 2022-04-15 | 盐城市国泰混凝土有限公司 | Environment-friendly premixed concrete prepared from construction waste |
Non-Patent Citations (2)
| Title |
|---|
| 镍渣作集料制备高强混凝土性能研究;罗乃将;蔡星;王正权;李维;朱宝贵;顾红霞;羊中军;吴其胜;;混凝土世界;20200520(05);第62-65页 * |
| 镍渣的粉磨特性和活性研究;杨全兵;罗永斌;张雅钦;赖加斌;;粉煤灰综合利用;20130425(02);第23-26页 * |
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