CN109293324A - Full vanadium titanium iron steel smelting slag lightweight concrete and preparation method thereof - Google Patents
Full vanadium titanium iron steel smelting slag lightweight concrete and preparation method thereof Download PDFInfo
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- CN109293324A CN109293324A CN201811474897.6A CN201811474897A CN109293324A CN 109293324 A CN109293324 A CN 109293324A CN 201811474897 A CN201811474897 A CN 201811474897A CN 109293324 A CN109293324 A CN 109293324A
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- 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
- C04B28/08—Slag cements
- C04B28/085—Slags from the production of specific alloys, e.g. ferrochrome slags
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B40/00—Processes, in general, for influencing or modifying the properties of mortars, concrete or artificial stone compositions, e.g. their setting or hardening ability
- C04B40/02—Selection of the hardening environment
- C04B40/0277—Hardening promoted by using additional water, e.g. by spraying water on the green concrete element
- C04B40/0286—Hardening under water
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- 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
- C04B2111/40—Porous or lightweight materials
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
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- 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
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- Inorganic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention belongs to building material technical fields, and in particular to a kind of full vanadium titanium iron steel smelting slag lightweight concrete and preparation method thereof.Technical problem to be solved by the invention is to provide a kind of full vanadium titanium iron steel smelting slag lightweight concretes, including following components raw material to be prepared: swollen 300~400 parts by weight of pearl of 100 parts by weight of casting residue, 40~70 parts by weight of high-titanium slag micro mist, 50~80 parts by weight of slag micro powder, 30 parts by weight of desulfurized gypsum, high-titanium slag, 350~450 parts by weight of high-titanium slag slag sand.Primary raw material of the present invention is entirely derived from vanadium titanium steel iron metallurgy industry waste residue, and the concrete product density being prepared is low, mechanical property is good.
Description
Technical field
The invention belongs to the large solid waste comprehensive utilization of vanadium titanium ferrous metallurgical industry and building material technical fields, and in particular to
A kind of full vanadium titanium iron steel smelting slag lightweight concrete and preparation method thereof.
Background technique
China's Panzhihua-Xichang Region is rich in vanadium titano-magnetite, will produce with the ore smelting pig iron, then in steelmaking process
Raw a large amount of metallurgical slags, such as blast-furnace cinder, steel slag, desulfurized gypsum, casting residue.
The blast-furnace cinder generated during being raw material manUfaCtUre of pig iron using vanadium titano-magnetite is high-titanium slag, TiO2Content exists
15% or more, due to the TiO in its composition2Mostly exist with the stable structure mineral such as stable perovskite, titanaugite, calcium activated,
Silicon, aluminium component cause its gelation activity component chemical reaction rate slow in glass solid solution, and activity reduces.In the prior art,
The construction material application of high-titanium slag mainly has three ways, such as following: first is that molten state high-titanium slag is carried out water quenching chilling, shape
At water quenching granulating blast furnace high-titanium slag, by water quenching granulating blast furnace high-titanium slag grinding at micro mist, making cement mixing material or concrete
Use mineral admixture；Second is that molten state high-titanium slag is poured into chute and roller, while high pressure water is sprayed into, forms high-titanium slag
Swollen pearl, the swollen pearl of the slag can be used as concrete light-weight aggregate；Third is that by molten state blast furnace high-titanium slag natural cooling in air
Solidification, then solidifying body is broken into high-titanium slag rubble and high-titanium slag slag sand, it is used as building sand, stone aggregate.
The pig iron obtained using above-mentioned v-bearing titanomagnetite smelting is in raw material steelmaking process, and impurity is reacted with slag former in the pig iron
Generate steel slag.The mineral such as cement clinker mineral, periclase, free calcium oxide in steel slag have certain self-hardening property.Existing skill
In art, steel slag uses raw material mainly as manufacture of cement or wears into fine powder as concrete mineral admixture；In addition, also having steel
Slag is directly as Sand for Concrete, stone aggregate, but there are huge hidden danger for volume stability of the slag as aggregate in concrete.
Steel mill's desulfurized gypsum is the by-product gypsum that the flue gas in steelmaking process is generated through desulfurization, main component and the natural gypsum
It is similar.
Casting residue is the waste residue of generation during efficient steel double refining, and main component is based on calcium aluminium.In the prior art,
It is less for casting residue comprehensive utilization channel.Currently, 7,000,000 tons of annual high-titanium slag discharge amount of Panxi Diqu or more；Steel slag 100
Ten thousand tons or more；300,000 tons of desulfurized gypsum or more；100,000 tons of casting residue or more.
Less than 50%, accumulating amount is still constantly increasing the comprehensive utilization ratio of the above vanadium titanium iron steel smelting slag, does not only take up
Large amount of land resources, also cause serious destruction to local environment, therefore, it is necessary to adequately utilize vanadium titanium steel iron smelting
It refines slag and produces all kinds of construction materials, to reduce local environment pressure.
Lightweight concrete has a variety of outstanding properties and the functionality advantage such as lightweight, high-strength, heat preservation, energy-absorbing, antidetonation, is construction
The critical product that green building is badly in need of.In the prior art, lightweight concrete is with cement for main cementing material, all kinds of artificial/days
Right light-weight aggregate and natural sand stone are aggregate, cement, artificial/natural light-weight aggregate, natural sand stone preparation and acquisition energy consumption height, natural mine
Object resource consumption is big.If all cement necessary to lightweight concrete can be replaced with vanadium titanium iron steel smelting slag, gathered materials, on the one hand
Large dosage scale dissolves vanadium titanium iron steel smelting slag, on the other hand provides energy saving green concrete product for Green Architectural Development.
Summary of the invention
Technical problem to be solved by the invention is to provide a kind of full vanadium titanium iron steel smelting slag lightweight concretes.The full vanadium titanium
Iron steel smelting slag lightweight concrete, including following raw material are prepared: 100 parts by weight of casting residue, high-titanium slag micro mist 40~70
Swollen 300~400 parts by weight of pearl of parts by weight, 50~80 parts by weight of slag micro powder, 30 parts by weight of desulfurized gypsum, high-titanium slag, Gao Tai
350~450 parts by weight of slag slag sand.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, raw material further includes 120~150 parts by weight of water.
Wherein, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the casting residue refers to efficient steel double refining mistake
The waste residue generated in journey.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the main component of the casting residue are as follows: TiO2
3~4%, CaO 44~47%, MgO 4~5%, SiO217~18%, Al2O320~22%, Fe2O34~5%.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the specific surface area of the casting residue >=
150m2/kg。
Wherein, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the high-titanium slag refers to is with vanadium titano-magnetite
The blast-furnace cinder generated during raw material manUfaCtUre of pig iron.
Wherein, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the high-titanium slag micro mist refers to the high titanium of molten state
The particle that slag is formed after water quenching chilling, then through grinding it is levigate to specific surface area be not less than 350m2/ kg powder body material.It is described
High-titanium slag micro mist refer to subparticle of the granularity less than 63 microns.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the main component of the high-titanium slag micro mist
Are as follows: TiO215~25%, CaO 20~40%, MgO 6~10%, SiO215~32%, Al2O310~17%.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the specific surface area of the high-titanium slag micro mist
≥350m2/ kg, 28 days strength activity index >=60%.
Wherein, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the swollen pearl of high-titanium slag refers to molten state height
Titanium slag dispersion is dished out, formed in the case where rolling centrifugal force and the effect of water and air rapid cooling to include micropore, surface smooth, big
Small not equal circular granular.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the main component of the swollen pearl of high-titanium slag
Are as follows: TiO215~25%, CaO 20~40%, MgO 6~10%, SiO215~32%, Al2O310~17%.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the swollen pearl particle size of high-titanium slag≤
9.5mm, 750~850kg/m of bulk density3, 1350~1450kg/m of apparent density3。
Wherein, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the high-titanium slag slag sand refers to the high titanium of molten state
Slag is poured into slag bath, natural cooling, particle of the granularity less than 4.75mm for being crushed, being sieved into.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the main component of the high-titanium slag slag sand
Are as follows: TiO215~25%, CaO 20~40%, MgO 6~10%, SiO215~32%, Al2O310~17%.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the high-titanium slag slag sand particle size≤
2.36mm, 1500~1550kg/m of bulk density3, 3300~3400kg/m of apparent density3。
Wherein, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the steel slag refers to that v-bearing titanomagnetite smelting obtains
The pig iron be raw material steelmaking process in, in the pig iron impurity reacted with slag former generation steel slag.The slag micro powder refers to granularity
Subparticle less than 63 microns.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the main component of the slag micro powder is
Fe2O332~36%, CaO 32~36%, MgO 6~10%, SiO210~12%, Al2O35~6%.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the specific surface area of the slag micro powder >=
400m2/ kg, basicity factor >=1.8,28 day strength activity index >=80%.
Wherein, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the desulfurized gypsum is the flue gas in steelmaking process
The by-product gypsum generated through desulfurization.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the main component of the desulfurized gypsum are as follows:
CaO 69~75%, MgO 2.5~3%, SO323~24%, SiO21.5~2%.
Further, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the specific surface area of the desulfurized gypsum >=
400m2/kg。
Preferably, in above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete, the full vanadium titanium iron steel smelting slag lightweight coagulation
The dry apparent density < 1800kg/m of soil3, compression strength > 15MPa.
Second technical problem to be solved by this invention is to provide above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete
Preparation method, comprising the following steps: each raw material and water are uniformly mixed so as to obtain fluidised form mixture in proportion, are poured into mold, exciting
Closely knit, die surface plastic covering film is placed in room temperature condition maintenance demoulding, then soaks and support under 20 ± 2 DEG C of environment of temperature
Shield, is made full vanadium titanium iron steel smelting slag lightweight concrete after taking-up.
Under room temperature maintenance generalized time be 1 day, usually to demould when intensity of test block can ensure that test block does not damage really
It fixes time, is demoulded after 24 hours, intensity can guarantee to demould.
Curing in water 28 days under 20 ± 2 DEG C of environment of temperature, usual curing time after 28 days, promote to most by concrete strength
80% or more of whole concrete strength.
Specifically, grinding tool size can be according to client in the preparation method of above-mentioned full vanadium titanium iron steel smelting slag lightweight concrete
Demand customizes different size grinding tool.Generalling use die size is 100mm × 100mm × 100mm.
The present invention has the beneficial effect that:
(1) in the full vanadium titanium iron steel smelting slag lightweight concrete of the present invention, casting residue CaO-Al2O3System, there are aluminates
Clinker phase and lime both have self-hardening property, can also excite other cementitious material systems；Contain in high-titanium slag micro mist
CaO、Al2O3、SiO2Etc. components, and Al2O3、SiO2And part CaO is present in vitreum, and after levigate, vitreum activity
It improves, it can be in CaO, sulfuric acid being lauched of salt action；There are cement clinker mineral, free calcium oxide etc. in slag micro powder, both may be used
It, can also be in alkalinity or sulfuric acid being lauched of salt action with from aquation；Desulfurized gypsum bulk composition is CaSO4, sial body can be excited
The aquation of system.The above powder body material system can be excited mutually, generate hydrated calcium silicate (C-S-H) gel, aquation aluminium sulfate etc.
Hydrated product forms cementitious material system, has preferable bonding and hardening effect, can substitute directly as cementitious material
Cement.
(2) in the full vanadium titanium iron steel smelting slag lightweight concrete of the present invention, the swollen pearl of high-titanium slag and high-titanium slag slag sand conduct
Lightweight concrete aggregate, on the one hand, the swollen bead surface of high-titanium slag is closely knit, internal porous, under apparent and bulk density, can replace gently
Gather materials；Another aspect high-titanium slag slag sand intensity is high, can effective support system, form preferable mechanical property, meet lightweight coagulation
The selection principle of native light-weight aggregate and sand.
(3) it in the full vanadium titanium iron steel smelting slag lightweight concrete of the present invention, is not spiked with cement and all other men makes naturally gently
Gather materials and sand, all using casting residue, high-titanium slag micro mist, slag micro powder, desulfurized gypsum, the swollen pearl of high-titanium slag and high-titanium slag
Slag sand greatly reduces lightweight concrete production energy consumption and natural money conducive to the industrial scale application of v-ti magnetite metallurgical slag
Source consumption；
(4) the full v-ti magnetite metallurgical slag lightweight concrete of the present invention has preferable mechanical property, lower apparent density,
It is the critical material being badly in need of in Green Architectural Development, and the green building productions that country encourages；
(5) the full vanadium titanium iron steel smelting slag lightweight concrete preparation process of the present invention is simple, easy to operate, at low cost, energy conservation,
Low-carbon environment-friendly；From metallurgical slag comprehensive utilization and lightweight concrete production technology, economy and environmental protection angle, the present invention
It is practical by with great society, economy and environmental benefit.
Specific embodiment
It is not specifically specified in the present invention, it is weight (quality) percentage or well known to a person skilled in the art hundred
Divide ratio；Described heavy amount (quality) part can be gram or kilogram.
The technology contents being not specifically delineated in the content of present invention and above-described embodiment are compared with technology.
In the following example, casting residue, high-titanium slag micro mist, slag micro powder, desulfurized gypsum, the swollen pearl of high-titanium slag, Gao Tai
Slag slag sand is provided by Liangshan Mountain Rui Hai Industrial Co., Ltd. of steel city group.
Embodiment 1
1) 100 parts by weight of casting residue, 40 parts by weight of high-titanium slag micro mist, 80 parts by weight of slag micro powder, desulfurized gypsum 30 are pressed
The proportion of swollen 300 parts by weight of pearl of parts by weight, high-titanium slag, 450 parts by weight of high-titanium slag slag sand and 140 parts by weight of water takes each component
Raw material；
2) casting residue, high-titanium slag micro mist, slag micro powder, the swollen pearl of high-titanium slag, high-titanium slag slag sand and water are mixed
Stirring is closed, the uniform fluidised form mixture of mix is made；
3) fluidised form mixture pours in 100mm × 100mm × 100mm steel cube mold, and exciting is closely knit, mold table
Face plastic covering film is placed in after room temperature condition conserves 1 day and demoulds；
4) cube concrete test specimen after demoulding is made after taking-up curing in water 28 days under 20 ± 2 DEG C of environment of temperature
Full vanadium titanium iron steel smelting slag lightweight concrete.
Embodiment 2
1) 100 parts by weight of casting residue, 55 parts by weight of high-titanium slag micro mist, 65 parts by weight of slag micro powder, desulfurized gypsum 30 are pressed
The proportion of swollen 300 parts by weight of pearl of parts by weight, high-titanium slag, 450 parts by weight of high-titanium slag slag sand and 140 parts by weight of water takes each component
Raw material；
2) casting residue, high-titanium slag micro mist, slag micro powder, the swollen pearl of high-titanium slag, high-titanium slag slag sand and water are mixed
Stirring is closed, the uniform fluidised form mixture of mix is made；
3) fluidised form mixture pours in 100mm × 100mm × 100mm steel cube mold, and exciting is closely knit, mold table
Face plastic covering film is placed in after room temperature condition conserves 1 day and demoulds；
4) cube concrete test specimen after demoulding is made after taking-up curing in water 28 days under 20 ± 2 DEG C of environment of temperature
Full vanadium titanium iron steel smelting slag lightweight concrete.
Embodiment 3
1) 100 parts by weight of casting residue, 70 parts by weight of high-titanium slag micro mist, 50 parts by weight of slag micro powder, desulfurized gypsum 30 are pressed
The proportion of swollen 300 parts by weight of pearl of parts by weight, high-titanium slag, 450 parts by weight of high-titanium slag slag sand and 140 parts by weight of water takes each component
Raw material；
2) casting residue, high-titanium slag micro mist, slag micro powder, the swollen pearl of high-titanium slag, high-titanium slag slag sand and water are mixed
Stirring is closed, the uniform fluidised form mixture of mix is made；
3) fluidised form mixture pours in 100mm × 100mm × 100mm steel cube mold, and exciting is closely knit, mold table
Face plastic covering film is placed in after room temperature condition conserves 1 day and demoulds；
4) cube concrete test specimen after demoulding is made after taking-up curing in water 28 days under 20 ± 2 DEG C of environment of temperature
Full vanadium titanium iron steel smelting slag lightweight concrete.
Embodiment 4
1) 100 parts by weight of casting residue, 55 parts by weight of high-titanium slag micro mist, 65 parts by weight of slag micro powder, desulfurized gypsum 30 are pressed
The proportion of swollen 350 parts by weight of pearl of parts by weight, high-titanium slag, 400 parts by weight of high-titanium slag slag sand and 140 parts by weight of water takes each component
Raw material；
2) casting residue, high-titanium slag micro mist, slag micro powder, the swollen pearl of high-titanium slag, high-titanium slag slag sand and water are mixed
Stirring is closed, the uniform fluidised form mixture of mix is made；
3) fluidised form mixture pours in 100mm × 100mm × 100mm steel cube mold, and exciting is closely knit, mold table
Face plastic covering film is placed in after room temperature condition conserves 1 day and demoulds；
4) cube concrete test specimen after demoulding is made after taking-up curing in water 28 days under 20 ± 2 DEG C of environment of temperature
Full vanadium titanium iron steel smelting slag lightweight concrete.
Embodiment 5
1) 100 parts by weight of casting residue, 55 parts by weight of high-titanium slag micro mist, 65 parts by weight of slag micro powder, desulfurized gypsum 30 are pressed
The proportion of swollen 400 parts by weight of pearl of parts by weight, high-titanium slag, 350 parts by weight of high-titanium slag slag sand and 140 parts by weight of water takes each component
Raw material；
2) casting residue, high-titanium slag micro mist, slag micro powder, the swollen pearl of high-titanium slag, high-titanium slag slag sand and water are mixed
Stirring is closed, the uniform fluidised form mixture of mix is made；
3) fluidised form mixture pours in 100mm × 100mm × 100mm steel cube mold, and exciting is closely knit, mold table
Face plastic covering film is placed in after room temperature condition conserves 1 day and demoulds；
4) cube concrete test specimen after demoulding is made after taking-up curing in water 28 days under 20 ± 2 DEG C of environment of temperature
Full vanadium titanium iron steel smelting slag lightweight concrete.
Embodiment 6
1) 100 parts by weight of casting residue, 55 parts by weight of high-titanium slag micro mist, 65 parts by weight of slag micro powder, desulfurized gypsum 30 are pressed
The proportion of swollen 350 parts by weight of pearl of parts by weight, high-titanium slag, 400 parts by weight of high-titanium slag slag sand and 120 parts by weight of water takes each component
Raw material；
2) casting residue, high-titanium slag micro mist, slag micro powder, the swollen pearl of high-titanium slag, high-titanium slag slag sand and water are mixed
Stirring is closed, the uniform fluidised form mixture of mix is made；
3) fluidised form mixture pours in 100mm × 100mm × 100mm steel cube mold, and exciting is closely knit, mold table
Face plastic covering film is placed in after room temperature condition conserves 1 day and demoulds；
4) cube concrete test specimen after demoulding is made after taking-up curing in water 28 days under 20 ± 2 DEG C of environment of temperature
Full vanadium titanium iron steel smelting slag lightweight concrete.
Embodiment 7
1) 100 parts by weight of casting residue, 55 parts by weight of high-titanium slag micro mist, 65 parts by weight of slag micro powder, desulfurized gypsum 30 are pressed
The proportion of swollen 400 parts by weight of pearl of parts by weight, high-titanium slag, 350 parts by weight of high-titanium slag slag sand and 150 parts by weight of water takes each component
Raw material；
2) casting residue, high-titanium slag micro mist, slag micro powder, the swollen pearl of high-titanium slag, high-titanium slag slag sand and water are mixed
Stirring is closed, the uniform fluidised form mixture of mix is made；
3) fluidised form mixture pours in 100mm × 100mm × 100mm steel cube mold, and exciting is closely knit, mold table
Face plastic covering film is placed in after room temperature condition conserves 1 day and demoulds；
4) cube concrete test specimen after demoulding is made after taking-up curing in water 28 days under 20 ± 2 DEG C of environment of temperature
Full vanadium titanium iron steel smelting slag lightweight concrete.
Embodiment 8
1) 100 parts by weight of casting residue, 70 parts by weight of high-titanium slag micro mist, 50 parts by weight of slag micro powder, desulfurized gypsum 30 are pressed
The proportion of swollen 350 parts by weight of pearl of parts by weight, high-titanium slag, 400 parts by weight of high-titanium slag slag sand and 140 parts by weight of water takes each component
Raw material；
2) casting residue, high-titanium slag micro mist, slag micro powder, the swollen pearl of high-titanium slag, high-titanium slag slag sand and water are mixed
Stirring is closed, the uniform fluidised form mixture of mix is made；
3) fluidised form mixture pours in 100mm × 100mm × 100mm steel cube mold, and exciting is closely knit, mold table
Face plastic covering film is placed in after room temperature condition conserves 1 day and demoulds；
4) cube concrete test specimen after demoulding is made after taking-up curing in water 28 days under 20 ± 2 DEG C of environment of temperature
Full vanadium titanium iron steel smelting slag lightweight concrete.
The permeable product properties of alkali-activated carbonatite high-titanium slag obtained by embodiment 1-8 is shown in Table 1.1 performance of table is " general using GB/T 50081
Logical mechanical performance of concrete test method " measurement obtains.
The 1 permeable product properties of alkali-activated carbonatite high-titanium slag of table
| Embodiment | 28 days compression strength/MPa | Dry apparent density/(kg/m3) |
| Embodiment 1 | 24.3 | 1785 |
| Embodiment 2 | 26.1 | 1769 |
| Embodiment 3 | 19.4 | 1760 |
| Embodiment 4 | 22.7 | 1743 |
| Embodiment 5 | 19.2 | 1717 |
| Embodiment 6 | 25.9 | 1781 |
| Embodiment 7 | 17.3 | 1709 |
| Embodiment 8 | 21.6 | 1742 |
The other raw materials of raw material of the present invention in addition to water all select smelting iron and steel waste, with high-titanium slag micro mist, steel slag
The waste residues compound system such as micro mist, desulfurized gypsum, casting residue is cementitious material, using the swollen pearl of high-titanium slag and high-titanium slag slag sand as glue
Material, can be prepared the lightweight coagulation of C15-C20 grade.
Claims (10)
1. full vanadium titanium iron steel smelting slag lightweight concrete, it is characterised in that: be prepared including following components raw material: casting residue
100 parts by weight, 40~70 parts by weight of high-titanium slag micro mist, 50~80 parts by weight of slag micro powder, 30 parts by weight of desulfurized gypsum, Gao Tai
Swollen 300~400 parts by weight of pearl of slag, 350~450 parts by weight of high-titanium slag slag sand.
2. full vanadium titanium iron steel smelting slag lightweight concrete according to claim 1, it is characterised in that: raw material further includes water
120~150 parts by weight.
3. full vanadium titanium iron steel smelting slag lightweight concrete according to claim 1 or 2, it is characterised in that: the casting residue
Main component are as follows: TiO23~4%, CaO 44~47%, MgO 4~5%, SiO217~18%, Al2O320~22%,
Fe2O34~5%；Specific surface area >=150m of the casting residue2/kg。
4. full vanadium titanium iron steel smelting slag lightweight concrete according to claim 1 or 2, it is characterised in that: the high titanium ore
The main component of slag micro mist are as follows: TiO215~25%, CaO 20~40%, MgO 6~10%, SiO215~32%, Al2O3
10~17%；Specific surface area >=350m of the high-titanium slag micro mist2/ kg, 28 days strength activity index >=60%.
5. full vanadium titanium iron steel smelting slag lightweight concrete according to claim 1 or 2, it is characterised in that: the high titanium ore
The main component of the swollen pearl of slag are as follows: TiO215~25%, CaO 20~40%, MgO 6~10%, SiO215~32%, Al2O3
10~17%；The swollen pearl particle size≤9.5mm of high-titanium slag, 750~850kg/m of bulk density3, apparent density 1350~
1450kg/m3。
6. full vanadium titanium iron steel smelting slag lightweight concrete according to claim 1 or 2, it is characterised in that: the high titanium ore
The main component of slag slag sand are as follows: TiO215~25%, CaO 20~40%, MgO 6~10%, SiO215~32%, Al2O3
10~17%；The high-titanium slag slag sand particle size≤2.36mm, 1500~1550kg/m of bulk density3, apparent density
3300~3400kg/m3。
7. full vanadium titanium iron steel smelting slag lightweight concrete according to claim 1 or 2, it is characterised in that: the steel slag is micro-
The main component of powder is Fe2O332~36%, CaO 32~36%, MgO 6~10%, SiO210~12%, Al2O35~
6%；Specific surface area >=400m of the slag micro powder2/ kg, basicity factor >=1.8,28 day strength activity index >=80%.
8. full vanadium titanium iron steel smelting slag lightweight concrete according to claim 1 or 2, it is characterised in that: the desulfurization stone
The main component of cream are as follows: CaO 69~75%, MgO 2.5~3%, SO323~24%, SiO21.5~2%；The desulfurization stone
Specific surface area >=400m of cream2/kg。
9. described in any item full vanadium titanium iron steel smelting slag lightweight concretes according to claim 1~8, it is characterised in that: described
The dry apparent density < 1800kg/m of full vanadium titanium iron steel smelting slag lightweight concrete3, compression strength > 15MPa.
10. the preparation method of full vanadium titanium iron steel smelting slag lightweight concrete according to any one of claims 1 to 9, feature exist
In: each raw material and water are uniformly mixed so as to obtain fluidised form mixture in proportion, are poured into mold, exciting is closely knit, die surface covering modeling
Expect film, is placed in room temperature condition maintenance demoulding, then the curing in water under 20 ± 2 DEG C of environment of temperature, is made full vanadium titanium after taking-up
Iron steel smelting slag lightweight concrete.
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| CN116874268A (en) * | 2023-08-07 | 2023-10-13 | 四川君和环保股份有限公司 | Mortar with strength grade of M15 and preparation method thereof |
| CN118420311A (en) * | 2024-07-04 | 2024-08-02 | 唐山学院 | Waste concrete adhesion bed material beneficial to algae growth and adhesion bed preparation method |
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