CN115159871A - Method for exciting steel slag powder cementing material by chemical-physical coupling and application thereof - Google Patents
Method for exciting steel slag powder cementing material by chemical-physical coupling and application thereof Download PDFInfo
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- CN115159871A CN115159871A CN202210882722.9A CN202210882722A CN115159871A CN 115159871 A CN115159871 A CN 115159871A CN 202210882722 A CN202210882722 A CN 202210882722A CN 115159871 A CN115159871 A CN 115159871A
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- 239000002893 slag Substances 0.000 title claims abstract description 277
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 275
- 239000010959 steel Substances 0.000 title claims abstract description 275
- 239000000843 powder Substances 0.000 title claims abstract description 111
- 230000008878 coupling Effects 0.000 title claims abstract description 69
- 238000010168 coupling process Methods 0.000 title claims abstract description 69
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 69
- 238000000034 method Methods 0.000 title claims abstract description 25
- 239000000463 material Substances 0.000 title description 17
- 239000002245 particle Substances 0.000 claims abstract description 77
- 230000005284 excitation Effects 0.000 claims abstract description 70
- 239000004568 cement Substances 0.000 claims abstract description 37
- 230000000694 effects Effects 0.000 claims abstract description 34
- 238000002360 preparation method Methods 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 22
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 18
- 230000003213 activating effect Effects 0.000 claims description 17
- 238000005507 spraying Methods 0.000 claims description 12
- 239000000126 substance Substances 0.000 claims description 12
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 9
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 9
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 9
- 235000011152 sodium sulphate Nutrition 0.000 claims description 9
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 8
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 8
- 235000013379 molasses Nutrition 0.000 claims description 8
- 229940061605 tetrasodium glutamate diacetate Drugs 0.000 claims description 8
- UZVUJVFQFNHRSY-OUTKXMMCSA-J tetrasodium;(2s)-2-[bis(carboxylatomethyl)amino]pentanedioate Chemical compound [Na+].[Na+].[Na+].[Na+].[O-]C(=O)CC[C@@H](C([O-])=O)N(CC([O-])=O)CC([O-])=O UZVUJVFQFNHRSY-OUTKXMMCSA-J 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 238000000227 grinding Methods 0.000 claims description 6
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 238000005096 rolling process Methods 0.000 claims 3
- 239000012190 activator Substances 0.000 claims 1
- 238000001879 gelation Methods 0.000 claims 1
- 230000008569 process Effects 0.000 abstract description 7
- 239000004566 building material Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 abstract 1
- 239000002910 solid waste Substances 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 36
- 239000011083 cement mortar Substances 0.000 description 24
- 238000006703 hydration reaction Methods 0.000 description 21
- 230000036571 hydration Effects 0.000 description 18
- 238000002156 mixing Methods 0.000 description 16
- 239000012071 phase Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 238000012412 chemical coupling Methods 0.000 description 8
- 229910052500 inorganic mineral Inorganic materials 0.000 description 8
- 239000011707 mineral Substances 0.000 description 8
- 238000006243 chemical reaction Methods 0.000 description 7
- 238000001000 micrograph Methods 0.000 description 7
- 230000004913 activation Effects 0.000 description 6
- 238000001514 detection method Methods 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 239000011575 calcium Substances 0.000 description 4
- 238000004090 dissolution Methods 0.000 description 4
- 239000002002 slurry Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 238000000265 homogenisation Methods 0.000 description 3
- 150000002500 ions Chemical class 0.000 description 3
- HMUNWXXNJPVALC-UHFFFAOYSA-N 1-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C(CN1CC2=C(CC1)NN=N2)=O HMUNWXXNJPVALC-UHFFFAOYSA-N 0.000 description 2
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 2
- WZFUQSJFWNHZHM-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)CC(=O)N1CC2=C(CC1)NN=N2 WZFUQSJFWNHZHM-UHFFFAOYSA-N 0.000 description 2
- JVKRKMWZYMKVTQ-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]pyrazol-1-yl]-N-(2-oxo-3H-1,3-benzoxazol-6-yl)acetamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C=NN(C=1)CC(=O)NC1=CC2=C(NC(O2)=O)C=C1 JVKRKMWZYMKVTQ-UHFFFAOYSA-N 0.000 description 2
- YJLUBHOZZTYQIP-UHFFFAOYSA-N 2-[5-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NN=C(O1)CC(=O)N1CC2=C(CC1)NN=N2 YJLUBHOZZTYQIP-UHFFFAOYSA-N 0.000 description 2
- CONKBQPVFMXDOV-QHCPKHFHSA-N 6-[(5S)-5-[[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]piperazin-1-yl]methyl]-2-oxo-1,3-oxazolidin-3-yl]-3H-1,3-benzoxazol-2-one Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)N1CCN(CC1)C[C@H]1CN(C(O1)=O)C1=CC2=C(NC(O2)=O)C=C1 CONKBQPVFMXDOV-QHCPKHFHSA-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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910001653 ettringite Inorganic materials 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- KZEVSDGEBAJOTK-UHFFFAOYSA-N 1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-2-[5-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]-1,3,4-oxadiazol-2-yl]ethanone Chemical compound N1N=NC=2CN(CCC=21)C(CC=1OC(=NN=1)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)=O KZEVSDGEBAJOTK-UHFFFAOYSA-N 0.000 description 1
- LDXJRKWFNNFDSA-UHFFFAOYSA-N 2-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)-1-[4-[2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidin-5-yl]piperazin-1-yl]ethanone Chemical compound C1CN(CC2=NNN=C21)CC(=O)N3CCN(CC3)C4=CN=C(N=C4)NCC5=CC(=CC=C5)OC(F)(F)F LDXJRKWFNNFDSA-UHFFFAOYSA-N 0.000 description 1
- SXAMGRAIZSSWIH-UHFFFAOYSA-N 2-[3-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]-1,2,4-oxadiazol-5-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C1=NOC(=N1)CC(=O)N1CC2=C(CC1)NN=N2 SXAMGRAIZSSWIH-UHFFFAOYSA-N 0.000 description 1
- ZRPAUEVGEGEPFQ-UHFFFAOYSA-N 2-[4-[2-(2,3-dihydro-1H-inden-2-ylamino)pyrimidin-5-yl]pyrazol-1-yl]-1-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)ethanone Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C=1C=NN(C=1)CC(=O)N1CC2=C(CC1)NN=N2 ZRPAUEVGEGEPFQ-UHFFFAOYSA-N 0.000 description 1
- 229910001341 Crude steel Inorganic materials 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 238000005054 agglomeration Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- XFWJKVMFIVXPKK-UHFFFAOYSA-N calcium;oxido(oxo)alumane Chemical group [Ca+2].[O-][Al]=O.[O-][Al]=O XFWJKVMFIVXPKK-UHFFFAOYSA-N 0.000 description 1
- 239000002738 chelating agent Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000005549 size reduction Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
- C04B7/1535—Mixtures thereof with other inorganic cementitious materials or other activators with alkali metal containing activators, e.g. sodium hydroxide or waterglass
-
- 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
- C04B12/00—Cements not provided for in groups C04B7/00 - C04B11/00
- C04B12/005—Geopolymer cements, e.g. reaction products of aluminosilicates with alkali metal hydroxides or silicates
-
- 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
- C04B7/00—Hydraulic cements
- C04B7/36—Manufacture of hydraulic cements in general
- C04B7/38—Preparing or treating the raw materials individually or as batches, e.g. mixing with fuel
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Inorganic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
- Furnace Details (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A method for exciting the gelling activity of steel slag powder by chemical-physical coupling and application thereof belong to the field of building materials, and aim to improve the gelling activity of the steel slag powder and improve the utilization rate, and are suitable for steel slag prepared by different treatment processes. The method comprises the following steps: (1) Carrying out crushing pretreatment on the steel slag prepared in different areas and different treatment processes to obtain steel slag particles; (2) Adding an active excitant into the pretreated steel slag particles, and homogenizing for a certain time; (3) Carrying out chemical-physical coupling excitation treatment on the steel slag particles containing the active exciting agent to prepare the chemical-physical coupling excited steel slag powder. The chemical-physical coupling excitation steel slag powder disclosed by the invention is simple in preparation process, low in cost, low in energy consumption and wide in application range, and can be used for increasing the use amount of the steel slag powder in cement, reducing the use amount of cement clinker, realizing the effective utilization of industrial solid waste in the field of cement and solving the problem of difficult steel slag absorption.
Description
Technical Field
The invention relates to the field of building materials, in particular to a preparation method and application of a chemical-physical coupling excitation steel slag powder cementing material.
Background
The steel slag is a by-product of steel making, and accounts for 15-20 wt% of the yield of the crude steel. According to statistics, nearly 2 hundred million tons of steel slag are produced in the world at present every year, and the annual output of the steel slag in China is up to more than 1 million tons. However, only about 20% to 30% of steel slag is effectively utilized. Most of steel slag is discarded at will, which not only causes serious resource waste, but also occupies a large amount of land and causes environmental pollution. Therefore, the resource utilization of the steel slag is a hot problem discussed by scholars at home and abroad. The steel slag contains a certain amount of C 3 S、C 2 S (two main mineral phases of cement clinker) to make it have part of waterActivating and thus also often referred to as "poor quality" cement clinker. The application of the steel slag as the auxiliary cementing material in the field of building materials is not only one of important ways of consuming the steel slag in a large quantity, but also is beneficial to promoting the sustainable development of the building material industry and the steel smelting industry and helping the achievement of the strategic goals of 'reaching peak by carbon in 2030 years and neutralizing by carbon in 2060 years'.
Due to the differences of ore sources, smelting processes and slagging systems, the chemical components and mineral compositions of the steel slag are complex and have large fluctuation. Wherein, the relatively low hydration activity is an important reason for restricting the application of the steel slag in the field of building materials. The steel slag contains more mineral phases (about 40-55%) with poor inertia or hydration activity, such as RO phase and C phase 2 F, and the like, and C having hydration activity therein 2 S is usually mainly beta type with weaker activity. Therefore, in order to improve the hydration activity of the steel slag, the steel slag is pretreated by adopting a simple physical excitation mode or a chemical excitation mode and the like. But still has the problems of single treatment method, poor excitation effect, higher cost and the like.
Disclosure of Invention
The invention aims to overcome the technical problems in the technical background, and provides a method for exciting a steel slag powder cementing material by chemical-physical coupling and application thereof. The chemical-physical coupling excitation steel slag powder has the characteristics of high specific surface area, high activity and the like, can realize the large-scale application of the steel slag in the building industry, and provides a new way for the high resource utilization of the steel slag.
In order to achieve the purpose, the technical scheme of the invention comprises the following steps:
1) Crushing and pretreating the steel slag by using a jaw crusher or a counterattack crusher to ensure that the particle size of the steel slag meets the grinding fineness;
2) Spraying an active excitant on the steel slag particles, and homogenizing;
3) Placing the steel slag particles containing the active excitant into a mill for grinding, carrying out chemical-physical coupling excitation on the steel slag particles until the specific surface area of the steel slag powder is 350-550 m 2 And/kg, namely preparing the chemical-physical coupling excitation steel slag powder.
The steel slag mainly comprises the following chemical components in percentage by mass:
CaO 32.24％～45.96％，
SiO 2 14.05％～22.84％，
Fe 2 O 3 22.91％～33.69％，
MgO 2.1% to 11.23%, and
Al 2 O 3 1.52％～6.24％。
the steel slag is area A-hot stuffy steel slag, area A-air quenching steel slag, area B-hot splashing steel slag, area B-roller steel slag, area C-hot stuffy steel slag, area C-hot splashing steel slag, area D-roller steel slag or area E-roller steel slag.
The activity excitant consists of 5-20 parts by mass of inorganic activation component and 80-95 parts by mass of organic activation component;
the inorganic activating component is a mixture of sodium sulfate, aluminum sulfate and sodium carbonate,
the organic activating component is a mixture of triethanolamine, ethylene glycol, tetrasodium glutamate diacetate and molasses.
The mass ratio of sodium sulfate to aluminum sulfate to sodium carbonate in the inorganic activating component is 2-4:2-3:3-5;
the mass ratio of triethanolamine, ethylene glycol, tetrasodium glutamate diacetate and molasses in the organic activating components is 2-4:1-2:0.5-1:2 to 5.
The addition amount of the active excitant is 0.05 to 0.6 percent of the mass of the steel slag.
In the step 3), the chemical-physical coupling excitation time is 20-78 min.
The chemical-physical coupling is utilized to excite the steel slag powder to be applied to preparing the steel slag cement, and the doping amount of the steel slag powder is 30-35% of the total mass.
The inorganic activating components of the active excitant of the invention, namely sodium sulfate, aluminum sulfate and sodium carbonate, can effectively promote the hydration of the steel slag and enrich the quantity and the types of the hydration products in the system. Sodium sulfate and aluminum sulfate to provide additional SO for the system 4 2- 、Al 3+ Ions, accelerating and accelerating the cement bodyIn series C 3 The reaction of A and the generation of ettringite and hydrated calcium aluminate form a compact microstructure. On the other hand, after sodium sulfate and sodium carbonate are hydrolyzed, ca (OH) generated by hydration in the system can be mixed 2 The reaction improves the alkalinity of the system and accelerates the further hydration of the steel slag. Furthermore, sodium carbonate and Ca (OH) 2 The fine calcium carbonate generated after the reaction is deposited on the surface of unhydrated particles, so that more gaps are formed, the transmission of water and ions is accelerated, and the formation of hydration products is facilitated.
The organic activating components of the activity excitant of the invention are triethanolamine, glycol, tetrasodium glutamate diacetate and molasses. The triethanolamine, the ethylene glycol and the molasses can be used as foreign molecules to meet the requirement of unsaturated electrovalence bonds on the surfaces of steel slag particles during physical excitation, reduce the occurrence of agglomeration phenomenon, promote the hydrolysis of a steel slag mineral phase and accelerate the formation of hydration products. The formation of large amounts of hydration products necessarily reduces the Ca content of the liquid phase 2+ The concentration of (2) creates favorable conditions for the dissolution of iron-containing mineral phases in the steel slag. Tetrasodium glutamate diacetate as a metal chelator is very easy to react with Ca 2+ 、Fe 2+/3+ The plasma is complexed to form a stable complex, so that the dissolution of the slag mineral phase is accelerated, and the hydration reaction of the steel slag is promoted.
The implementation of the scheme of the invention has at least the following advantages:
(1) compared with the currently disclosed technology for exciting the steel slag to have the gelling activity, the implementation of the method can effectively improve the gelling activity of the steel slag and solve the problem of lower activity of the steel slag.
(2) The chemical-physical coupling excitation steel slag powder prepared by the method has large specific surface area and high activity, can improve the consumption of the steel slag in cement, and meets the mechanical property index.
(3) The method is suitable for the steel slag obtained in different areas and different slagging systems.
(4) The method has the advantages of simple process, low energy consumption, low requirement on processing equipment and the like, and is convenient to operate.
The physical-chemical coupling excitation steel slag powder cementing material provided by the invention has the characteristics of synergistically improving the surface property of particles and improving the cementing activity of steel slag powder based on the physical-chemical coupling excitation effect. The physical-chemical coupling excitation technology increases the effective action area and the target quantity of chemical excitation while the physical excitation action causes the phenomena of lattice distortion, crystal grain size reduction, dislocation and the like of mineral phase crystals on the surface of steel slag powder particles and the proportion of micron and below particle size particles in the powder is increased, lays a foundation for the implementation of chemical excitation, and the chemical excitation can be directly acted on the surface of the steel slag powder particles while the physical excitation efficiency is improved, so that the reaction activation energy of the surface of the steel slag powder particles is reduced, and the aims of reducing the fineness of the steel slag powder, improving the surface property of the steel slag powder and improving the hydration activity are further fulfilled.
The physical-chemical coupling excited steel slag powder cementing material provided by the invention is based on Ca in steel slag powder when the steel slag powder is hydrated 2+ 、Fe 3+ 、Mg 2+ The plasma dissolution participates in the cement hydration reaction, the powder surface of the steel slag powder is improved through physical-chemical coupling excitation, the reaction activation energy of the surface is reduced, the ion dissolution is easier, the pH value in pores is rapidly increased, the generation of C-S-H gel and AFt in a system is promoted under the action of gypsum, the continuous hydrolysis of steel slag powder particles is further promoted, the hydration degree of the system is continuously increased, and the microstructure of the system is improved.
Drawings
FIG. 1 is a scanning electron microscope image of cement-steel slag (area A-hot smoldering slag) pure slurry at the age of 7d,
FIG. 2 is a scanning electron microscope image of cement-steel slag (area A-air quenched steel slag) paste at the age of 7d,
FIG. 3 is a scanning electron microscope image of cement-steel slag (B region-hot splashing steel slag) paste at the age of 7d,
FIG. 4 is a scanning electron microscope image of cement-steel slag (B region-roller steel slag) paste at age 7d,
FIG. 5 is a scanning electron microscope image of cement-steel slag (area C-hot splashing steel slag) paste at the age of 7d,
FIG. 6 is a scanning electron microscope image of 7d age of cement-steel slag (area C-hot slag),
FIG. 7 is a scanning electron microscope photograph of cement-steel slag (D region-roller steel slag) paste at age 7D,
FIG. 8 is a scanning electron microscope image of cement-steel slag (E region-roller steel slag) paste at age 7d,
in each figure, a is physical excitation, b is doping of a chemical excitant after physical excitation, and c is physical-chemical coupling excitation.
Detailed Description
The technical scheme of the invention comprises the following steps:
1) Crushing and pretreating the steel slag by using a jaw crusher or a counterattack crusher to ensure that the particle size of the steel slag meets the grinding fineness; in the specific implementation, the particle size of the steel slag is controlled to be less than 2.36mm, and the reasonable distribution of an active exciting agent in the subsequent process is facilitated under the size;
2) Spraying an active excitant on the steel slag particles, and homogenizing; during the homogenization process, stirring can be carried out, but the stirring is maintained for a certain time to ensure that the active excitant is absorbed by the particles, so as to be solidified on the particles; for the specific homogenization time control, those skilled in the art can adjust the homogenization time according to the temperature and humidity of the actual operation environment, which is not described in detail in the present application;
3) Placing the steel slag particles containing the active excitant into a mill for grinding until the specific surface area of the steel slag powder is 350-550 m 2 And/kg, namely preparing the chemical-physical coupling excitation steel slag powder. The essence of the step is that the steel slag particles are subjected to chemical-physical coupling excitation, and the nature of the coupling excitation effect is that the chemical excitation can change the physical and chemical forms of the particle surfaces, so that the physical excitation efficiency of the particles is improved; the change of the surface morphology of the particles in the physical excitation process can increase the contact area of the active excitant and the particles and promote the deepening of the chemical excitation degree. In the step, the excitation time of the chemical-physical coupling is 20-78 min. If the time is too short, the reaction is not repeated; if the time is too long, the production efficiency is seriously reduced.
In view of the fact that the chemical-physical coupling excitation is adopted, the raw material steel slag needs to be controlled, and the steel slag mainly comprises the following chemical components in percentage by mass:
CaO 32.24％～45.96％，
SiO 2 14.05％～22.84％，
Fe 2 O 3 22.91％～33.69％，
MgO 2.1% to 11.23%, and
Al 2 O 3 1.52％～6.24％。
the steel slag of the present invention is not limited to a specific environment, and various types such as the following may be used: the steel slag is area A-hot stuffy steel slag, area A-air quenching steel slag, area B-hot splashing steel slag, area B-roller steel slag, area C-hot stuffy steel slag, area C-hot splashing steel slag, area D-roller steel slag or area E-roller steel slag.
The activity excitant consists of 5 to 20 mass parts of inorganic activation component and 80 to 95 mass parts of organic activation component;
the inorganic activating component is a mixture of sodium sulfate, aluminum sulfate and sodium carbonate, and the mass ratio of the sodium sulfate to the aluminum sulfate to the sodium carbonate in the inorganic activating component is 2-4:2-3:3-5;
the organic activating component is a mixture of triethanolamine, ethylene glycol, tetrasodium glutamate diacetate and molasses. The mass ratio of triethanolamine, glycol, tetrasodium glutamate diacetate and molasses in the organic activating components is 2-4:1-2:0.5-1:2 to 5.
The addition amount of the active excitant is 0.05 to 0.6 percent of the mass of the steel slag.
The chemical-physical coupling is utilized to excite the steel slag powder to be applied to preparing the steel slag cement, and the doping amount of the steel slag powder is 30-35% of the total mass.
The present invention will be described in further detail with reference to specific examples.
Example 1:
the embodiment provides a preparation method and application of a chemical-physical coupling excitation steel slag powder cementing material. The preparation process comprises the following steps: in area A, crushing pretreatment is carried out on hot disintegrating steel slag by using a jaw crusher or a back-impact crusher to prepare particles with the particle size of less than 2.36 mm. Spraying active exciting agent (the dosage is 0.1 percent of the mass of the steel slag) on the steel slag particles, and homogenizing for a certain time. Will contain living thingsPlacing steel slag particles of the nature excitant in a ball mill, carrying out chemical-physical coupling excitation on the steel slag particles for 68min to obtain chemical-physical coupling excited steel slag powder with the specific surface area of 550m 2 In terms of/kg. Mixing the chemical-physical coupling excitation steel slag powder and the P.I cement according to a ratio of 30.
Comparative example 1-1:
in area A, the steel slag powder with the same surface area as the steel slag powder excited by chemical-physical coupling in the embodiment 1 can be prepared by only carrying out physical excitation on the steel slag powder by the hot smoldering steel slag in area A for 82 min. Mixing the steel slag powder and the P.I cement according to a ratio of 30 to 70, preparing cement mortar according to GB17671, and detecting the compressive strength of the cement mortar at 7d and 28 d. The results of the comparison with example 1 are shown in Table 1 below.
Comparative examples 1 to 2:
the steel slag powder in the comparative example 1-1 and the P.I cement are mixed in a ratio of 30. The results of the comparison with example 1 are shown in Table 1 below.
Table 1 results of comparison of example 1 with comparative examples 1-1, 1-2:
example 2:
the embodiment provides a preparation method and application of a chemical-physical coupling excitation steel slag powder cementing material. The preparation process comprises the following steps: in the area A, the wind-quenched steel slag is subjected to crushing pretreatment by using a jaw crusher or a back-impact crusher to prepare particles with the particle size of less than 2.36 mm. Spraying active exciting agent (the dosage is 0.3 percent of the mass of the steel slag) on the steel slag particles, and homogenizing for a certain time. Placing steel slag particles containing active exciting agent in a ball mill, and carrying out chemical-physical coupling excitation on the steel slag particles for 38min to obtain chemical-physical coupling excited steel slag powder with the specific surface area of 370m 2 (iv) kg. Mixing the chemical-physical coupling excitation steel slag powder and the P.I cement according to the proportion of 35And (4) compressive strength.
Comparative example 2-1:
the area A-wind quenched steel slag only carries out physical excitation on the steel slag powder, and steel slag powder with the same surface area as the steel slag powder excited by chemical-physical coupling in the embodiment 2 can be prepared after 48 min. Mixing the steel slag powder and the P.I cement according to a ratio of 35 to 65, preparing cement mortar according to GB17671, and detecting the compressive strength of the cement mortar at 7d and 28 d. The results of the comparison with example 2 are shown in Table 2 below.
Comparative examples 2 to 2:
the steel slag powder in the comparative example 2-1 and the P.I cement are mixed according to the proportion of 35 to 65, an activity excitant accounting for 0.3 percent of the mass of the steel slag is added, cement mortar is prepared according to GB17671, and the compressive strength of the cement mortar at 7d and 28d is detected. The results of the comparison with example 2 are shown in Table 2 below.
Table 2 results of comparison of example 2 with comparative examples 2-1, 2-2:
example 3:
the embodiment provides a preparation method and application of a chemical-physical coupling excitation steel slag powder cementing material. The preparation method comprises the following steps: and in the area B, the hot splashing steel slag is subjected to crushing pretreatment by using a jaw crusher or a back-impact crusher to prepare particles with the particle size of less than 2.36 mm. Spraying active exciting agent (the dosage is 0.2 percent of the mass of the steel slag) on the steel slag particles, and homogenizing for a certain time. Placing steel slag particles containing active exciting agent in a ball mill, and carrying out chemical-physical coupling excitation on the steel slag particles for 46min to obtain chemical-physical coupling excited steel slag powder with the specific surface area of 440m 2 In terms of/kg. Mixing the chemical-physical coupling excitation steel slag powder and the P.I cement according to a ratio of 30.
Comparative example 3-1:
the steel slag powder with the same surface area as the steel slag powder excited by chemical-physical coupling in the embodiment 3 can be prepared by only carrying out physical excitation on the steel slag powder by the hot splashing steel slag in the area B for 54 min. Mixing the steel slag powder and the P.I cement according to a ratio of 30 to 70, preparing cement mortar according to GB17671, and detecting the compressive strength of the cement mortar at 7d and 28 d. The results of the comparison with example 3 are shown in Table 3 below.
Comparative example 3-2:
the steel slag powder in the comparative example 3-1 and the P.I cement are mixed in a ratio of 30. The results of the comparison with example 3 are shown in Table 3 below.
Table 3 results of comparison of example 3 with comparative examples 3-1, 3-2:
example 4:
the embodiment provides a preparation method and application of a chemical-physical coupling excitation steel slag powder cementing material. The preparation process comprises the following steps: and in the area B, the roller steel slag is subjected to crushing pretreatment by using a jaw crusher or a back-impact crusher to prepare particles with the particle size of less than 2.36 mm. Spraying active exciting agent (the dosage is 0.3 percent of the mass of the steel slag) on the steel slag particles, and homogenizing for a certain time. Placing steel slag particles containing active exciting agent in a ball mill, and carrying out chemical-physical coupling excitation on the steel slag particles for 44min to obtain chemical-physical coupling excited steel slag powder with the specific surface area of 360m 2 In terms of/kg. Mixing the chemical-physical coupling excitation steel slag powder and the P.I cement in a ratio of 30.
Comparative example 4-1:
the area B, namely the roller steel slag, only carries out physical excitation on the roller steel slag, and steel slag powder with the same surface area as the chemical-physical coupling excitation steel slag powder in the embodiment 3 can be prepared after 53 min. Mixing the steel slag powder and the P.I cement according to a ratio of 30 to 70, preparing cement mortar according to GB17671, and detecting the compressive strength of the cement mortar at 7d and 28 d. The results of the comparison with example 4 are shown in Table 4 below.
Comparative examples 4 to 2:
the steel slag powder in the comparative example 4-1 and the P.I cement are mixed in a ratio of 30. The results of the comparison with example 4 are shown in Table 4 below.
Table 4 results of comparison of example 4 with comparative examples 4-1 and 4-2:
example 5:
the embodiment provides a preparation method and application of a chemical-physical coupling excitation steel slag powder cementing material. The preparation process comprises the following steps: and C, crushing the hot splashing steel slag by using a jaw crusher or a back-impact crusher to prepare particles with the particle size of less than 2.36 mm. Spraying active exciting agent (the dosage is 0.05 percent of the mass of the steel slag) on the steel slag particles, and homogenizing for a certain time. Placing steel slag particles containing active exciting agent in a ball mill, and carrying out chemical-physical coupling excitation on the steel slag particles for 32min to obtain chemical-physical coupling excited steel slag powder with specific surface area of 420m 2 In terms of/kg. Mixing the chemical-physical coupling excitation steel slag powder and the P.I cement according to a ratio of 35.
Comparative example 5-1:
the hot splashing steel slag in the area C only carries out physical excitation on the steel slag powder, and the steel slag powder with the same surface area as the chemical-physical coupling excitation steel slag powder in the embodiment 3 can be prepared after 35 min. Mixing the steel slag powder and the P.I cement according to a ratio of 35 to 65, preparing cement mortar according to GB17671, and detecting the compressive strength of the cement mortar at 7d and 28 d. The results of the comparison with example 5 are shown in Table 5 below.
Comparative examples 5 to 2:
the steel slag powder in the comparative example 5-1 and the P.I cement are mixed according to the proportion of 35 to 65, an activity excitant accounting for 0.05 percent of the mass of the steel slag is added, cement mortar is prepared according to GB17671, and the compressive strength of the cement mortar at 7d and 28d is detected. The results of the comparison with example 5 are shown in Table 5 below.
Table 5 results of comparison of example 5 with comparative examples 5-1, 5-2:
example 6:
the embodiment provides a preparation method and application of a chemical-physical coupling excitation steel slag powder cementing material. The preparation process comprises the following steps: and C, crushing the hot disintegrating steel slag by using a jaw crusher or a back-impact crusher to prepare particles with the particle size of less than 2.36 mm. Spraying active exciting agent (the dosage is 0.1 percent of the mass of the steel slag) on the steel slag particles, and homogenizing for a certain time. Placing steel slag particles containing active exciting agent in a ball mill, and performing chemical-physical coupling excitation on the steel slag particles for 45min to obtain chemical-physical coupling excited steel slag powder with the specific surface area of 500m 2 In terms of/kg. Mixing the chemical-physical coupling excitation steel slag powder and the P.I cement according to a ratio of 35.
Comparative example 6-1:
in area C, the steel slag powder with the same surface area as the steel slag powder excited by chemical-physical coupling in example 3 can be prepared by only physically exciting the steel slag powder by the hot-smoldering steel slag for 52 min. Mixing the steel slag powder and the P.I cement according to a ratio of 35 to 65, preparing cement mortar according to GB17671, and detecting the compressive strength of the cement mortar at 7d and 28 d. The results of the comparison with example 6 are shown in Table 6 below.
Comparative example 6-2:
the steel slag powder in the comparative example 6-1 and the P.I cement are mixed according to a ratio of 35 to 65, an activity excitant accounting for 0.1 percent of the mass of the steel slag is added, cement mortar is prepared according to GB17671, and the compressive strength of the cement mortar at 7d and 28d is detected. The results of the comparison with example 6 are shown in Table 6 below.
Table 6 results of comparison of example 6 with comparative examples 6-1, 6-2:
example 7:
the embodiment provides a preparation method and application of a chemical-physical coupling excitation steel slag powder cementing material. The preparation process comprises the following steps: d area for drum slagAnd (4) carrying out crushing pretreatment by using a jaw crusher or a reaction crusher to prepare particles with the particle size of less than 2.36 mm. Spraying active exciting agent (the dosage is 0.6 percent of the mass of the steel slag) on the steel slag particles, and homogenizing for a certain time. Placing steel slag particles containing active exciting agent in a ball mill, and carrying out chemical-physical coupling excitation on the steel slag particles for 28min to obtain chemical-physical coupling excited steel slag powder with the specific surface area of 380m 2 (iv) kg. Mixing the chemical-physical coupling excitation steel slag powder and the P.I cement according to a ratio of 30.
Comparative example 7-1:
the steel slag powder with the same surface area as the chemically-physically coupled and excited steel slag powder in the example 3 can be prepared after 38min by only carrying out physical excitation on the steel slag powder by using the roller steel slag in the area D. Mixing the steel slag powder and the P.I cement according to a ratio of 30 to 70, preparing cement mortar according to GB17671, and detecting the compressive strength of the cement mortar at 7d and 28 d. The results of comparison with example 7 are shown in Table 7 below.
Comparative example 7-2:
the steel slag powder in the comparative example 7-2 and the P.I cement are mixed in a ratio of 30 to 70, an activity excitant accounting for 0.4 percent of the mass of the steel slag is added, cement mortar is prepared according to GB17671, and the compressive strength of the cement mortar at 7d and 28d is detected. The results of the comparison with example 7 are shown in Table 7 below.
Table 7 results of comparison of example 7 with comparative examples 7-1, 7-2:
example 8:
the embodiment provides a preparation method and application of a chemical-physical coupling excitation steel slag powder cementing material. The preparation process comprises the following steps: in area E, the roller steel slag is crushed and pretreated by a jaw crusher or a back-impact crusher to prepare particles with the particle size of less than 2.36 mm. Spraying active exciting agent (the dosage is 0.2 percent of the mass of the steel slag) on the steel slag particles, and homogenizing for a certain time. Putting the steel slag particles containing the active excitant into a ball mill, and carrying out chemical-physical coupling excitation on the steel slag particles to obtain 65min, obtaining the chemical-physical coupling excitation steel slag powder with the specific surface area of 470m 2 In terms of/kg. Mixing the chemical-physical coupling excitation steel slag powder and the P.I cement according to a ratio of 30.
Comparative example 8-1:
in area E, the steel slag powder with the same surface area as the steel slag powder excited by chemical-physical coupling in example 3 can be prepared by only physically exciting the steel slag powder by the steel slag in the roller in 85 min. Mixing the steel slag powder and the P.I cement according to a ratio of 30 to 70, preparing cement mortar according to GB17671, and detecting the compressive strength of the cement mortar at 7d and 28 d. The results of the comparison with example 8 are shown in Table 8 below.
Comparative example 8-2:
the steel slag powder in the comparative example 8-2 and the P.I cement are mixed according to the proportion of 30. The results of the comparison with example 8 are shown in Table 8 below.
Table 8 results of comparison of example 8 with comparative examples 8-1 and 8-2:
the steel slag powder and the cement in the examples 1 to 8 and the comparative examples 1-1 to 8-1 and 1-2 to 8-2 are fully mixed according to the proportion to prepare cement-steel slag paste, and the cement-steel slag paste is cured in a standard curing box for 7 days to prepare a detection sample.
And (4) spraying gold on the detection sample, and observing the microstructure of the detection sample under a scanning electron microscope.
The results of the comparative tests are shown in FIGS. 1-8. (a) The group detection samples are all comparative examples only physically exciting steel slag powder, and it can be seen that the steel slag particle boundaries in the hardened slurry are obvious, the surface of the hardened slurry rarely exists in the form of hydrated products, and part of the steel slag particles only play a role in inert filling; (b) The group detection samples are all comparative samples doped with an active agent during forming, and abundant hydration products exist around steel slag particles, and the hydration products tightly wrap the steel slag particles, so that weak links in the cement-steel slag-based cementing material are optimized, the strength of the sample is improved, but no trace of the hydration products is found on the surfaces of the steel slag particles; and the detection sample in the group (c) is an embodiment of exciting the steel slag powder by physical-chemical coupling, a large amount of needle-like rod-shaped ettringite crystals exist in gaps of the sample, a large amount of hydration products exist around or on the surface of steel slag particles, the compactness of slurry is improved, the hydration degree of the steel slag powder is improved after the steel slag powder is excited by the physical-chemical coupling, and a part of mineral phase with poor activity in the steel slag also participates in the hydration reaction of cement, so that the improvement of the gelling activity of the steel slag is promoted, and the macroscopic performance of the cement-steel slag-based gelling material is improved.
The present invention is not limited to the above embodiments, and based on the technical solutions disclosed in the present invention, those skilled in the art can make some substitutions and reselections for some technical features without creative efforts based on the disclosed technical solutions, and these substitutions and reselections are all within the protection scope of the present invention.
Claims (8)
1. A method for exciting steel slag powder gelation activity by chemical-physical coupling is characterized by comprising the following steps:
1) Crushing and pretreating the steel slag by using a jaw crusher or a counterattack crusher to ensure that the particle size of the steel slag meets the grinding fineness;
2) Spraying an active excitant on the steel slag particles, and homogenizing;
3) Placing the steel slag particles containing the active excitant into a mill for grinding, carrying out chemical-physical coupling excitation on the steel slag particles until the specific surface area of the steel slag powder is 350-550 m 2 And/kg, namely preparing the chemical-physical coupling excitation steel slag powder.
2. The method for exciting the gelling activity of steel slag powder through chemical-physical coupling according to claim 1, wherein the steel slag comprises the following main chemical components in percentage by mass:
CaO 32.24％～45.96％，
SiO 2 14.05％～22.84％，
Fe 2 O 3 22.91％～33.69％，
MgO 2.1% to 11.23%, and
Al 2 O 3 1.52％～6.24％。
3. the method of claim 2, wherein the steel slag is a region A-hot smoldering steel slag, a region A-air quenched steel slag, a region B-hot splashing steel slag, a region B-rolling steel slag, a region C-hot smoldering steel slag, a region C-hot splashing steel slag, a region D-rolling steel slag or a region E-rolling steel slag.
4. The method for exciting the gelling activity of the steel slag powder by chemical-physical coupling according to claim 1, wherein the activity activator consists of 5-20 parts by mass of an inorganic activating component and 80-95 parts by mass of an organic activating component;
the inorganic activating component is a mixture of sodium sulfate, aluminum sulfate and sodium carbonate,
the organic activating component is a mixture of triethanolamine, ethylene glycol, tetrasodium glutamate diacetate and molasses.
5. The method for activating the gelling activity of steel slag powder through chemical-physical coupling according to claim 4, wherein the mass ratio of sodium sulfate, aluminum sulfate and sodium carbonate in the inorganic activating component is 2-4:2-3:3-5;
the mass ratio of triethanolamine, ethylene glycol, tetrasodium glutamate diacetate and molasses in the organic activating components is 2-4:1-2:0.5-1:2 to 5.
6. The method for exciting the gelling activity of the steel slag powder through chemical-physical coupling according to claim 1, wherein the addition amount of the activity exciting agent is 0.05-0.6% of the mass of the steel slag.
7. The method for exciting the gelling activity of the steel slag powder by chemical-physical coupling according to claim 1, wherein in the step 3), the chemical-physical coupling excitation time is 20-78 min.
8. The chemical-physical coupling excitation steel slag powder obtained by the method of any one of claims 1 to 7 is applied to the preparation of steel slag cement, and the doping amount of the steel slag powder is 30 to 35 percent of the total mass.
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| CN202210882722.9A CN115159871A (en) | 2022-07-26 | 2022-07-26 | Method for exciting steel slag powder cementing material by chemical-physical coupling and application thereof |
| AU2023305026A AU2023305026A1 (en) | 2022-07-26 | 2023-07-21 | Method for exciting steel slag powder cementing material via chemical-physical coupling, and application thereof |
| KR1020247004818A KR20240031402A (en) | 2022-07-26 | 2023-07-21 | Method for stimulating steel slag powder gelatin activity by a kind of chemical and physical coupling and application thereof |
| PCT/CN2023/108526 WO2024022235A1 (en) | 2022-07-26 | 2023-07-21 | Method for exciting steel slag powder cementing material via chemical-physical coupling, and application thereof |
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| CN117658510A (en) * | 2024-01-31 | 2024-03-08 | 北京中航天业科技有限公司 | Steel slag micropowder activity excitant based on high-temperature-chemical-mechanical coupling excitation and preparation method and application thereof |
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