CN112876166A - Metallurgical-based solid waste reinforcing material and preparation method thereof - Google Patents
Metallurgical-based solid waste reinforcing material and preparation method thereof Download PDFInfo
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- CN112876166A CN112876166A CN202110141123.7A CN202110141123A CN112876166A CN 112876166 A CN112876166 A CN 112876166A CN 202110141123 A CN202110141123 A CN 202110141123A CN 112876166 A CN112876166 A CN 112876166A
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- Prior art keywords
- solid waste
- metallurgical
- component
- mineral
- reinforcing material
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- 239000002910 solid waste Substances 0.000 title claims abstract description 56
- 239000012779 reinforcing material Substances 0.000 title claims abstract description 43
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 claims abstract description 33
- 239000011707 mineral Substances 0.000 claims abstract description 33
- 230000000087 stabilizing effect Effects 0.000 claims abstract description 25
- 239000002994 raw material Substances 0.000 claims abstract description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 120
- 239000002893 slag Substances 0.000 claims description 117
- 229910052742 iron Inorganic materials 0.000 claims description 59
- 239000000843 powder Substances 0.000 claims description 59
- 229910000831 Steel Inorganic materials 0.000 claims description 51
- 239000010959 steel Substances 0.000 claims description 51
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 31
- 239000010881 fly ash Substances 0.000 claims description 30
- 239000002245 particle Substances 0.000 claims description 20
- 238000002156 mixing Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 14
- 239000003546 flue gas Substances 0.000 claims description 14
- 238000006477 desulfuration reaction Methods 0.000 claims description 12
- 230000023556 desulfurization Effects 0.000 claims description 12
- 238000005245 sintering Methods 0.000 claims description 12
- 239000002956 ash Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 11
- 235000019738 Limestone Nutrition 0.000 claims description 9
- 239000006028 limestone Substances 0.000 claims description 9
- 239000011398 Portland cement Substances 0.000 claims description 8
- 239000004576 sand Substances 0.000 claims description 8
- 238000003756 stirring Methods 0.000 claims description 8
- 238000004056 waste incineration Methods 0.000 claims description 8
- 239000007787 solid Substances 0.000 claims description 6
- 239000011343 solid material Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 abstract description 7
- 239000004566 building material Substances 0.000 abstract description 5
- 238000007711 solidification Methods 0.000 abstract description 4
- 230000008023 solidification Effects 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 3
- 230000003014 reinforcing effect Effects 0.000 abstract description 3
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 238000005272 metallurgy Methods 0.000 abstract 2
- 239000004568 cement Substances 0.000 description 28
- 230000000694 effects Effects 0.000 description 27
- 235000010755 mineral Nutrition 0.000 description 21
- 239000010440 gypsum Substances 0.000 description 12
- 229910052602 gypsum Inorganic materials 0.000 description 12
- 239000004570 mortar (masonry) Substances 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 11
- 239000004567 concrete Substances 0.000 description 9
- 230000005284 excitation Effects 0.000 description 7
- 230000036571 hydration Effects 0.000 description 7
- 238000006703 hydration reaction Methods 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- 239000011882 ultra-fine particle Substances 0.000 description 7
- 239000006227 byproduct Substances 0.000 description 6
- 238000011049 filling Methods 0.000 description 6
- 239000011575 calcium Substances 0.000 description 5
- 238000000227 grinding Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- OBNDGIHQAIXEAO-UHFFFAOYSA-N [O].[Si] Chemical compound [O].[Si] OBNDGIHQAIXEAO-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 230000009286 beneficial 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
- 239000004927 clay Substances 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 229910001653 ettringite Inorganic materials 0.000 description 4
- 230000002195 synergetic effect Effects 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- CQBLUJRVOKGWCF-UHFFFAOYSA-N [O].[AlH3] Chemical compound [O].[AlH3] CQBLUJRVOKGWCF-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000011362 coarse particle Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000010790 dilution Methods 0.000 description 3
- 239000012895 dilution Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 239000003337 fertilizer Substances 0.000 description 3
- 239000010419 fine particle Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 239000011148 porous material Substances 0.000 description 3
- 230000008092 positive effect Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- 239000004575 stone Substances 0.000 description 3
- 239000011593 sulfur Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000011324 bead Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 2
- 239000000920 calcium hydroxide Substances 0.000 description 2
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 239000011083 cement mortar Substances 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000002989 correction material Substances 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000001879 gelation Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 239000011777 magnesium Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 239000011574 phosphorus Substances 0.000 description 2
- 239000011150 reinforced concrete Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 229910000859 α-Fe Inorganic materials 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 239000002585 base Substances 0.000 description 1
- 229910001570 bauxite Inorganic materials 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000011381 foam concrete Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 239000011464 hollow brick Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 239000012770 industrial material Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000029052 metamorphosis Effects 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000010813 municipal solid waste Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000013074 reference sample Substances 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 239000011265 semifinished product Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000003469 silicate cement Substances 0.000 description 1
- -1 silicon (aluminum) oxygen Chemical compound 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 230000003019 stabilising effect Effects 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 150000003464 sulfur compounds Chemical class 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 239000011573 trace mineral Substances 0.000 description 1
- 235000013619 trace mineral Nutrition 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 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
- C04B28/02—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
- 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
-
- 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
- C04B18/142—Steelmaking slags, converter 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00767—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes
- C04B2111/00775—Uses not provided for elsewhere in C04B2111/00 for waste stabilisation purposes the composition being used as waste barriers or the like, e.g. compositions used for waste disposal purposes only, but not containing the waste itself
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Environmental & Geological Engineering (AREA)
- Civil Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a metallurgical-based solid waste reinforcing material and a preparation method thereof, belonging to the technical field of building materials, and comprising 30-50% of a cementing and curing component, 10-20% of a mineral stabilizing component, 60-75% of a structure stabilizing component and 5-10% of a mineral fluidity adjusting component; wherein, the cementation solidification component, the mineral stabilizing component, the structure stabilizing component and the mineral fluidity adjusting component all contain more than 50 percent of metallurgy-based solid waste materials, and the utilization amount of the whole metallurgy-based solid waste materials is more than 90 percent. The metallurgical-based solid waste reinforcing material provided by the invention is mainly prepared from metallurgical wastes as raw materials, is used for reinforcing and repairing building structures, can effectively solve the problem of environmental pollution and increases the recycling amount of metallurgical solid wastes.
Description
Technical Field
The invention belongs to the technical field of building materials, and particularly relates to a metallurgical-based solid waste reinforcing material and a preparation method thereof.
Background
The byproducts of the desulfurization and denitrification of the sintering flue gas in the steel industry have the characteristics of complex components, instability and the like, and are difficult to recycle. With the proposal of ultra-low emission of flue gas in the steel industry, the production amount of new denitration byproducts is gradually increased, and even the byproducts of oxidation and denitration make the components of the desulfurized fly ash more complex and the treatment difficulty is further increased. The following two aspects are mainly focused on: (1) calcium sulfite in the desulfurized fly ash is unstable and easily decomposed by heat, thus easily causing secondary pollution. In addition, the decomposed calcium oxide is easy to absorb water and expand, which brings stability problem, thus limiting the application of the desulfurized fly ash in cement. (2) Heavy metals, SO2, dioxin and the like are adsorbed in the desulfurized fly ash, and with the change of environmental factors, the physical adsorption action is weakened, and adsorbed pollutants are released again, SO that the subsequent treatment is difficult, and the high-added-value application of the desulfurized fly ash is limited. Therefore, the high value-added utilization of the sintering flue gas desulfurization ash is a problem to be solved.
The converter steel slag has the characteristics of complex components, poor stability, difficult grinding, low gelling activity and the like, and is a main reason for resource utilization of large quantity of the converter steel slag. However, the existing related researches mostly take improvement of a certain property of the steel slag as an entry point, and the related basic researches on the internal relation among the composition, the mineral phase structure and the property of the steel slag are not systematic and deep enough, so that the existing steel slag often faces various problems when a large amount of resource utilization technologies are developed.
For a long time, the raw slag of the molten iron desulphurization slag contains 10 to 20 percent of iron element and is used as a cement and iron correction material. After the molten iron desulphurization slag is subjected to deep iron selection, iron element resources are basically and completely returned to the steel-making production, the MFe content of the molten iron desulphurization slag tailings is not more than 1.5%, and the molten iron desulphurization slag tailings are difficult to be directly used as a cement iron correction material. Therefore, it is necessary to develop the utilization problem of the tailings of the molten iron desulphurization slag after deep iron separation.
At present, the reinforcing material for building structures is mainly made of cement-based materials, and because the reinforcing material is prepared by mixing raw materials of finished products on site, the mode of preparing the reinforcing material by mixing on site has the following defects: firstly, mixing finished materials to ensure that the particle size distribution of the reinforcing material cannot be adjusted; secondly, the on-site stirring causes uneven stirring of the material when in use, and the reinforcing material is easy to avoid cracking after hardening, so that the reinforcing engineering is disabled; moreover, because a large amount of cement is added into the material, a large amount of cement clinker is consumed, the cement clinker is prepared by taking limestone, clay and iron raw materials as main raw materials according to a proper proportion, the raw materials are burnt until part or all of the raw materials are molten, and a semi-finished product is obtained by cooling.
Disclosure of Invention
The invention aims to provide a metallurgical-based solid waste reinforcing material, which mainly takes metallurgical waste as a raw material and is prepared with a reinforcing material, so that the problems of environmental pollution and waste recycling are solved.
In order to achieve the purpose, the invention adopts the technical scheme that: the provided metallurgical-based solid waste reinforcing material comprises the following components in percentage by mass: 30-50% of a cementing and curing component, 10-20% of a mineral stabilizing component, 60-75% of a structure stabilizing component and 5-10% of a mineral fluidity adjusting component, wherein the cementing and curing component, the mineral stabilizing component, the structure stabilizing component and the mineral fluidity adjusting component all contain more than 50% of metallurgical-based solid waste materials.
As another embodiment herein, the cementitious curing component comprises: 30-50% of silicate cement clinker and molten iron desulphurization slag powder, 50-60% of blast furnace slag powder, 5-6% of iron tailing powder and 10-15% of converter steel slag and fly ash mixture;
controlling the granularity of each component: 3500m of portland cement clinker2/kg-4500m2Per kg, molten iron desulfurized slag powder 550m2/kg-700m2Per kg, blast furnace slag powder 550m2/kg-650m2Per kg, 500m of converter slag2/kg -600m2Per kg, fly ash 400m2/kg-500m2Per kg, iron tailing powder 400m2/kg-500m2/kg。
As another example herein, the mineral stabilizing component comprises: sintering flue gas desulfurization ash and harmless treated waste incineration fly ash, wherein the mass ratio of the sintering flue gas desulfurization ash to the harmless treated waste incineration fly ash is 9: 1;
and (3) controlling the granularity: the particle size of the sintering flue gas desulfurization ash is more than 10000m2Per kg, the particle size of the waste incineration fly ash is 450m2/kg-550m2/kg。
As another embodiment of the present application, the structure-stabilizing component comprises: the iron tailing sand comprises two particle compositions of 0.63-1.25 and 1.25-2.5, and the proportion of the two particle compositions is 1: 3.
As another example of the present application, the mineral fluidity adjusting component comprises iron tailings sand with a particle size of 0.05 mm to 0.075 mm and limestone powder, and the mass ratio of the iron tailings sand to the limestone powder is 9: 2.
The invention also aims to provide a preparation method of the metallurgical-based solid waste reinforcing material, which comprises the following steps: preparing 30-50% of a cementing and curing component, 10-20% of a mineral stabilizing component, 60-75% of a structure stabilizing component and 5-10% of a mineral fluidity adjusting component according to the mass percentage, and uniformly mixing; and adding water into the uniformly mixed solid material for mixing, and stirring to form slurry, wherein the mass ratio of water to solid is 0.29-0.36.
As another embodiment of the application, when water is added and mixed, the water is added and mixed in batches, after the water is uniformly stirred each time, the water in the next batch is added and uniformly stirred until the total amount of the added water reaches the requirement of the water-solid mass ratio.
The metallurgical-based solid waste reinforcing material and the preparation method provided by the invention have the beneficial effects that: compared with the prior art, the metallurgical-based solid waste reinforcing material mainly comprises a large amount of metallurgical-based solid waste materials, and the reinforcing material has high early strength, stable later strength and high durability by utilizing double excitation of granularity and activity among the solid waste materials; in addition, a large amount of metallurgical-based solid waste materials are used in the reinforcing material, so that the waste is recycled, the exploitation and utilization of limestone, clay and iron raw materials are reduced, the environment pollution is reduced, the energy consumption and the carbon emission are reduced, and the method has great significance and accords with the current green and environment-friendly concept.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more apparent, the present invention is further described in detail below with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The metallurgical-based solid waste reinforcing material provided by the invention will now be explained. The metallurgical-base solid waste reinforcing material comprises the following components in percentage by mass: 30-50% of a cementing and curing component, 10-20% of a mineral stabilizing component, 60-75% of a structure stabilizing component and 5-10% of a mineral fluidity adjusting component, wherein the cementing and curing component, the mineral stabilizing component, the structure stabilizing component and the mineral fluidity adjusting component all contain more than 50% of metallurgical-based solid waste materials.
Compared with the prior art, the metallurgical-based solid waste reinforcing material mainly comprises a large amount of metallurgical-based solid waste materials, and the dual excitation of granularity and activity among the solid waste materials is utilized, so that the reinforcing material has high early strength, stable later strength and high durability; in addition, a large amount of metallurgical-based solid waste materials are used in the reinforcing material, so that the waste is recycled, the exploitation and utilization of limestone, clay and iron raw materials are reduced, the environment pollution is reduced, the energy consumption and the carbon emission are reduced, and the method has great significance and accords with the current green and environment-friendly concept.
Metallurgical-based solid waste materials, i.e., metallurgical slag, refer to various solid wastes generated in the production process of the metallurgical industry. Mainly blast furnace slag generated in an iron-making furnace; steel slag; various colored metal slags generated in non-ferrous metal smelting, such as copper slag, lead slag, zinc slag, nickel slag and the like; and red mud discharged from the alumina refining of bauxite and a small amount of iron oxide slag generated in the steel rolling process. 0.3-0.9t of steel slag is discharged per 1t of pig iron, 0.1-0.3t of steel slag is discharged per 1t of steel, and 0.6-2t of red mud is discharged per 1t of alumina. The urgency of solving the metallurgical pollution slag hazard is felt in 40 years of the world, and through the effort, the steel slag reaches the production balance in 70 years and is mainly used for manufacturing various building or industrial materials. The metallurgical pollution utilization in China is late, the utilization rate of blast furnace slag is 70-85%, and the utilization rate of steel slag is only about 25%. The utilization rate of the blast furnace slag reaches 100% in the countries of America, English, French, Japan and the like, and even a plurality of companies and factories specializing in commercial products of the blast furnace slag appear. Therefore, China has a great space for utilizing metallurgical waste solid materials.
The invention utilizes the metallurgical solid waste reinforcing material to solve the problem of high added value utilization of the metallurgical solid waste materials which are difficult to utilize, such as sintering flue gas, molten iron desulphurization slag, converter steel slag and the like in the steel industry in a large quantity, and the prepared metallurgical solid waste reinforcing material also has the characteristics of high early and later strength, good fluidity, no cracking, good construction performance, high durability and the like.
As a specific embodiment of the metallurgical-based solid waste reinforcing material provided by the invention, the cementitious curing component comprises: 30-50% of Portland cement clinker and molten iron desulphurization slag powder, 50-60% of blast furnace slag powder, 5-6% of iron tailing powder, and 10-15% of converter steel slag and fly ash mixture; controlling the granularity of each component: portland cement clinker 3500m2/kg-4500m2Per kg, molten iron desulfurized slag powder 550m2/kg-700m2Per kg, blast furnace slag powder 550m2/kg-650m2Per kg, 500m of converter slag2/kg-600m2Per kg, fly ash 400m2/kg -500m2Per kg, iron tailing powder 400m2/kg-500m2/kg。
In the embodiment, the industrial solid waste desulfurized gypsum, the blast furnace slag powder, the iron tailing powder, the steel slag and the fly ash are all solid waste materials, the mass of the solid waste materials accounts for more than half of that of the gelled materials, and the concepts of environmental protection and resource recycling are realized by applying a large amount of the solid waste materials.
The blast furnace slag powder belongs to silicate materials. It has stable chemical property, and has the characteristics of wear resistance, water absorption and the like. The slag is respectively processed into water granulated slag, slag broken stone, expanded slag and other main products. Blast furnace slag can be processed into valuable materials for multiple uses by various processes. The slag crushed stone can replace natural sand stone, and can be used as concrete, reinforced concrete, prestressed reinforced concrete aggregate below 500, heat-resistant concrete aggregate below 700 ℃, auxiliary materials of wear-resistant and anti-skid highways, racing yards, airstrip and the like, railway ballast, filling ground and foundation cushion fillers, sewage treatment media and the like. After being quenched by a large amount of water, blast furnace slag can be prepared into fine grain water slag mainly containing glass bodies, has potential hydraulic gelation performance, shows the hydraulic gelation performance under the action of excitants such as cement clinker, lime, gypsum and the like, and is a high-quality cement raw material. 70 percent to 80 percent of cement produced in China is mixed with different amounts of grain slag. The water granulated slag can also be used as a heat-insulating material, wet-ground and wet-ground slag, concrete and fine aggregate for road engineering; soil improving materials, and the like.
The hot-melt slag can be processed into porous expanded slag, which is crushed and screened to form concrete light aggregate, and also can be processed into expanded beads which are particles with micropores, smooth surfaces and different sizes. The expanded beads are high-quality concrete lightweight aggregate, and can save 20% of cement compared with the expanded slag; it can also be used as cement mixed material, road material, heat-insulating material, etc.
The steel slag is industrial solid waste, is slag discharged from steel making, and is divided into converter slag, open furnace slag and electric furnace slag according to furnace types. Mainly comprises calcium, iron, silicon, magnesium and a small amount of oxides of aluminum, manganese, phosphorus and the like. The steel slag is widely used for the cushion layer and the structural layer of the road subgrade, and is particularly suitable for being used as the aggregate paving pavement of asphalt mixture. The steel slag road has the advantages of high strength, good wear resistance and skid resistance, good durability, low maintenance cost and the like. The use of high phosphorus steel slag as fertilizer in western europe has a long history. The calcium, silicon, manganese and trace elements in the steel slag have fertilizer effect and can be applied to acid soil as slag fertilizer. Various steel slags can be used as pit filling and sea filling land building materials. At present, a small amount of steel slag cement is produced in China, about 50% of blast furnace granulated slag and about 10% of gypsum are mixed in the steel slag of a multi-purpose converter, and clinker-free steel slag cement is ground, or about 15% of cement clinker is used for replacing the steel slag to grind clinker-free steel slag cement. In some places of China, electric furnace steel slag is used for producing white steel slag cement. The steel slag is used as raw material of cement in Federal republic of Japan and Deutsche, and ferrite cement is roasted, so that energy can be saved. In addition, the steel slag can also be used for manufacturing bricks, tiles, carbonized building materials and the like. The comprehensive utilization method of the steel slag comprises the steps of pre-crushing the steel slag, baking and drying, magnetically separating and screening, grinding, crushing and grading, and magnetically separating and grading by a wet method to obtain the required granularity.
The industrial solid waste desulfurized gypsum of the power plant is mainly used for plastering mortar on the inner surface of the wall body of a building and leveling mortar on the ground. The high-strength cementing material can completely replace cement, the energy consumption for producing the high-strength cementing material is only 60 percent of that of the cement, and the carbon emission is only 1/5 percent of that of the cement. And the industrial by-product gypsum can completely replace natural gypsum after proper treatment. The comprehensive utilization of the industrial byproduct gypsum has two main ways: the gypsum is used as a cement retarder (setting retarder) and accounts for about 70 percent of the comprehensive utilization amount of industrial by-product gypsum.
The fly ash discharged by the power plant can be used as an admixture of cement, mortar and concrete and becomes a component of the cement and the concrete, the fly ash is used as a raw material for replacing clay to produce cement clinker, and is used for manufacturing sintered bricks, autoclaved aerated concrete, foamed concrete, hollow bricks, sintered or non-sintered ceramsite for paving roads; .
The iron tailing powder is waste after mineral separation and is a main component of industrial solid waste. The fluidity of the cement mortar can be improved, and the improvement effect of the grinding powder is more obvious. The tailings with reasonable coarse and fine particle size distribution have positive effect on improving the fluidity. The test result shows that the iron tailing powder with two finenesses can improve the fluidity of the cement mortar within the range of the researched mixing amount (not more than 50 percent); the cement hydration heat release result shows that compared with the reference sample, when the mixing amount of the raw mineral powder is less than 8 percent or the mixing amount of the grinding fine powder is less than 20 percent, the induction period is prolonged, and the hydration heat release is reduced; when the mixing amount of the raw ore powder is 8 percent and the mixing amount of the ground fine powder is 20 percent, the induction period is shortened, the hydration heat productivity is increased, the hydration can be accelerated, and the result of the mortar pore structure measured by nitrogen adsorption shows that the doping of the iron tailing powder can reduce the quantity of harmful pores and improve the pore structure of the mortar. In a word, the influence of a certain amount of iron tailing powder on the performance of the mortar is the comprehensive effect of a physical dilution effect, an accelerated hydration effect and a filling and compacting effect, and the increase of the fineness of the iron tailing powder is more beneficial to the exertion of three effects.
Mechanism of the cementitious curing component: the cementing and curing component mainly comprises a mixture of portland cement clinker, molten iron desulfurization slag powder, blast furnace slag powder, iron tailing powder, converter steel slag and fly ash, and is used for producing cementing and curing effect on the metallurgical solid waste reinforcing material, so that the metallurgical solid waste reinforcing material has qualified strength and durability.
The principle is that the molten iron desulphurization slag powder, the blast furnace slag powder, the iron tailing powder, the converter steel slag and the fly ash can generate a synergistic excitation effect to generate a reaction among substances, so that the metallurgical solid waste material has better strength and durability. The converter steel slag has two reasons for generating strength and durability: the converter steel slag is prepared from CaO and SiO2、Fe2O3MgO and P2O5Composition, most of the converter slag contains C3S、 C2S, substantially free of C3A and C4And (5) AF. Wherein C is3S、C2The S active mineral can be hydrated in water environment to generate C-S-H and CH substances, wherein the C-S-H product can provide strength and durability for the metallurgical solid waste reinforcing material, but the active C substances in the converter steel slag are less, so that the active C substances in the converter steel slag are more active3S、 C2S has small contribution strength to the metallurgical-based solid waste reinforcing material; the (II) converter steel slag also contains inert minerals, mainly C2F、C3MgS2And RO, which is difficult to hydrate and requires a certain condition for excitation.
And (3) grinding excitation: therefore, the converter steel slag, the molten iron desulphurization slag powder, the blast furnace slag powder, the iron tailing powder, the converter steel slag and the fly ash are firstly ground, when the specified fineness is reached, silica, aluminum oxide and ferrite generated on the surface of the raw materials are broken, and the more broken bonds are, the greater the activity of the powder is.
Alkali-sulfur double excitation: because converter steel slag, molten iron desulphurization slag, a certain amount of free calcium oxide and sulfur compounds exist in sintering desulphurization flue gas ash, in a water environment, because the free calcium oxide can react with water, an alkaline environment is generated, the pH value is about 13, in the alkaline environment, broken bonds on the surface of the converter steel slag, granulated blast furnace slag and the surface of fly ash can be excited, and the gel solidification effect is achieved, which is completely different from the cement gel solidification principle. The specific process is as follows:
the grinded molten iron desulphurization slag powder, blast furnace slag powder, iron tailing powder, converter steel slag and fly ash have a large amount of ultrafine particles. The ultrafine particles are alumino-silicate systems, Ca, bound by a plurality of silica tetrahedrons and alumino-tetrahedrons2+And Mg2 +The cations are randomly distributed around the silicon-oxygen tetrahedron and the aluminum-oxygen tetrahedron to balance the charge.
Under the action of the alkaline solution of the calcium hydroxide-containing slurry, cations on the surfaces of the tailing particles are dissolved into the solution at first, and the charge imbalance between the remaining silicon-oxygen tetrahedron and the aluminum-oxygen tetrahedron is intensified, so that the aluminum-oxygen bonds of the aluminum-oxygen tetrahedron are broken, dissolved out from the surfaces of the ultrafine particles in the form of metaaluminate and tend to form the dissolution balance between the surfaces of the ultrafine particles and the solution.
AlO2-+2OH-+2H2O＝[Al(OH)6]3- (2-1)
Due to the presence of the gypsum, the Ca is quickly dissolved out after the gypsum meets water2+And SO4 2-[ Al (OH) formed in this pattern (2-1)6]3-Will be mixed with the solutionCa2+And SO4 2-Combined to form ettringite. The reaction equation is:
2[Al(OH)6]3-+6Ca2++3 SO4 2-+26H2O＝Ca6Al2(SO4)3(OH)12·26H2O (2-2)
along with the continuous formation of ettringite, the dissolution balance of metaaluminate between the surface of the ultrafine particles and the solution is continuously broken, and the alundum tetrahedron is promoted to continuously migrate from the surface of the ultrafine particles. The migration of the aluminum tetrahedron from the surface of the tailing particle destroys the connection between the silicon-oxygen tetrahedron and the aluminum tetrahedron, so that the polymerization degree of the silicon (aluminum) oxygen tetrahedron on the surface of the superfine particle is rapidly reduced, the activity of the residual silicon-oxygen tetrahedron and the aluminum tetrahedron is greatly improved, and the calcium-rich calcium carbonate is obtained2+The C-S-H gel is continuously formed in the slurry solution. Therefore, in a gelled system containing a large amount of ultrafine particles, calcium hydroxide and gypsum, there is a synergistic process of formation of ettringite and C-S-H gel.
Through the process, the metallurgical solid waste reinforcing material has better strength and durability.
The main function of the portland cement clinker is to increase the early strength of the metallurgical solid waste reinforcing material; because the molten iron desulphurization slag powder, the blast furnace slag powder, the iron tailing powder, the converter steel slag and the fly ash need to be excited in a synergistic way, the early-stage coagulation and solidification are slow, and the portland cement clinker needs to be added, so that the early-stage strength is increased.
As a particular implementation of an embodiment of the invention, the mineral stabilising component comprises: the mass ratio of the sintering flue gas desulfurization ash to the harmless treated waste incineration fly ash is 9: 1; and (3) controlling the granularity: the particle size of the sintering flue gas desulfurization ash is more than 10000m2Per kg, the particle size of the waste incineration fly ash is 450m2/kg -550m2In terms of/kg. The metallurgical solid waste reinforcing material formed according to the proportion has the best viscosity, the maximum binding power when being smeared on a wall surface, and in addition, the sintered flue gas desulfurization ash and the garbage incineration fly ash after harmless treatment can also provide an alkali environment and sulfur elements in slurry, such as converter steel slag, iron tailings and molten iron for removing molten ironThe synergistic excitation of the sulfur slag powder, the blast furnace slag powder and the fly ash provides a material basis.
As a specific implementation of an embodiment of the present invention, the structure-stabilizing component includes: the iron tailing sand comprises two grain compositions of 0.63-1.25 and 1.25-2.5, and the proportion of the two grain compositions is 1: 3. The composition of the two kinds of particles and the two kinds of compositions can form the closest packing of metallurgical solid waste reinforcing material particles, thereby increasing the compressive strength and durability of slurry and increasing the crack resistance of the slurry. The effect of the iron tailings is as described above, the influence of a certain amount of iron tailing powder on the performance of the mortar is the comprehensive effect of a physical dilution effect, an accelerated hydration effect and a filling and compacting effect, and the increase of the fineness of the iron tailing powder is more beneficial to the exertion of three effects; the tailings with reasonable coarse and fine particle size distribution have positive effect on improving the fluidity.
As a specific implementation manner of the embodiment of the present invention, the mineral fluidity adjusting component includes iron tailings and limestone powder with a particle size of 0.05 mm to 0.075 mm, and the mass ratio of the iron tailings and the limestone powder is 9: 2. The slurry viscosity can be effectively improved, the slurry flowing frictional resistance is reduced, the slurry fluidity is improved, and a material foundation condition is provided for reinforcing and repairing a fine crack building. According to the above, the influence of a certain amount of iron tailing powder on the performance of the mortar is the comprehensive effect of a physical dilution effect, an accelerated hydration effect and a filling and compacting effect, and the increase of the fineness of the iron tailing powder is more beneficial to the exertion of three effects; the tailings with reasonable coarse and fine particle size distribution have positive effect on improving the fluidity. The fluidity of the mortar is improved through proper gradation and mass ratio of the mortar to the limestone powder.
A number of examples of the invention are given in table 1 below, in kg.
TABLE 1
From the above table, it can be seen that: the metallurgical solid waste reinforcing material has the characteristics of high flow state, micro expansion and segregation prevention. The construction can be carried out only by adding water and stirring on site, and all gaps can be filled without vibrating. In addition, the self-sealing antirust paint has the characteristics of good self-flowing property, quick hardening, early strength, high strength, no shrinkage, micro expansion, no toxicity, no harm, no aging, no pollution to water quality and the surrounding environment, good self-sealing property, rust prevention and the like. Compared with the traditional fine aggregate concrete and epoxy mortar, the mortar has the characteristics of better fluidity, higher strength, aging resistance, high temperature resistance, high impermeability, metamorphosis prevention, no shrinkage, good expansibility, easy control of construction, simplicity, convenience, rapidness and the like. The strength of the product is more than 25MPa in 1 day, more than 30MPa in 3 days, and 60-70MPa in 28 days. And (4) micro-expansion, namely ensuring that the grouting material is tightly contacted with the foundation. Durability test of 50 times of freeze-thaw cycle test, and no obvious change of strength. In the process of structural reinforcement and repair, no crack is generated, and the composite material has good durability.
The invention also aims to provide a preparation method of the metallurgical-based solid waste reinforcing material, which comprises the following steps: preparing 30-50% of a cementing and curing component, 10-20% of a mineral stabilizing component, 60-75% of a structure stabilizing component and 5-10% of a mineral fluidity adjusting component according to the mass percentage, and uniformly mixing; and adding water into the uniformly mixed solid material for mixing, and stirring to form slurry, wherein the mass ratio of water to solid is 0.29-0.36.
As a specific implementation manner of the embodiment of the invention, when water is added and mixed, water is added and mixed in batches, after each time of uniform stirring, the next batch of water is added and uniformly stirred until the total amount of the added water meets the requirement of the water-solid mass ratio.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (7)
1. The metallurgical-based solid waste reinforcing material is characterized by comprising the following components in percentage by mass: 30-50% of a cementing and curing component, 10-20% of a mineral stabilizing component, 60-75% of a structure stabilizing component and 5-10% of a mineral fluidity adjusting component, wherein the cementing and curing component, the mineral stabilizing component, the structure stabilizing component and the mineral fluidity adjusting component all contain more than 50% of metallurgical-based solid waste materials.
2. The metallurgically based solid waste reinforcing material of claim 1, wherein the cementitious curing component comprises: 30-50% of Portland cement clinker and molten iron desulphurization slag powder, 50-60% of blast furnace slag powder, 5-6% of iron tailing powder, and 10-15% of converter steel slag and fly ash mixture;
controlling the granularity of each component: 3500m of portland cement clinker2/kg-4500m2Per kg, molten iron desulfurized slag powder 550m2/kg-700m2Per kg, blast furnace slag powder 550m2/kg-650m2Per kg, 500m of converter slag2/kg-600m2Per kg, fly ash 400m2/kg-500m2Per kg, iron tailing powder 400m2/kg-500m2/kg。
3. The metallurgically based solid waste reinforcing material of claim 1, wherein the mineral stabilizing component comprises: sintering flue gas desulfurization ash and harmless treated waste incineration fly ash, wherein the mass ratio of the sintering flue gas desulfurization ash to the harmless treated waste incineration fly ash is 9: 1;
and (3) controlling the granularity: the particle size of the sintering flue gas desulfurization ash is more than 10000m2Per kg, the particle size of the waste incineration fly ash is 450m2/kg-550m2/kg。
4. The metallurgically based solid waste reinforcing material of claim 1, wherein the structural stabilizing component comprises: the iron tailing sand comprises two particle compositions of 0.63-1.25 and 1.25-2.5, and the proportion of the two particle compositions is 1: 3.
5. The metallurgical based solid waste reinforcing material according to claim 1, wherein the mineral fluidity adjusting component comprises: the mass ratio of the iron tailing sand and the limestone powder is 9:2, and the particle size of the iron tailing sand is 0.05-0.075 mm.
6. The method for preparing the metallurgical-based solid waste reinforcing material according to any one of claims 1 to 5, wherein the preparation of the raw materials: preparing 30-50% of a cementing and curing component, 10-20% of a mineral stabilizing component, 60-75% of a structure stabilizing component and 5-10% of a mineral fluidity adjusting component according to the mass percentage, and uniformly mixing; and adding water into the uniformly mixed solid material for mixing, and stirring to form slurry, wherein the mass ratio of water to solid is 0.29-0.36.
7. The method for preparing metallurgical-based solid waste reinforcing material according to claim 6, wherein water is added and mixed in batches during the water adding and mixing, and after each time of uniform stirring, the next batch of water is added and uniformly mixed until the total amount of the added water reaches the requirement of the water-solid mass ratio.
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| CN114436556B (en) * | 2022-01-25 | 2023-03-17 | 华泰恒生科技发展（北京）有限公司 | Admixture and foam concrete using same |
| CN115259817A (en) * | 2022-06-23 | 2022-11-01 | 中铁建设集团有限公司 | Method for preparing foundation pit backfill material by using multi-element solid waste synergy |
| CN115385622A (en) * | 2022-07-12 | 2022-11-25 | 河海大学 | Solid waste pavement repairing material and preparation method thereof |
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