CN117645460A - Red mud-based ready-mixed fluidized solidified soil and preparation method thereof - Google Patents
Red mud-based ready-mixed fluidized solidified soil and preparation method thereof Download PDFInfo
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- CN117645460A CN117645460A CN202311611777.7A CN202311611777A CN117645460A CN 117645460 A CN117645460 A CN 117645460A CN 202311611777 A CN202311611777 A CN 202311611777A CN 117645460 A CN117645460 A CN 117645460A
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- 239000002689 soil Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title abstract description 11
- 239000010440 gypsum Substances 0.000 claims abstract description 35
- 229910052602 gypsum Inorganic materials 0.000 claims abstract description 35
- 239000010881 fly ash Substances 0.000 claims abstract description 31
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims abstract description 29
- 235000011941 Tilia x europaea Nutrition 0.000 claims abstract description 29
- 239000004571 lime Substances 0.000 claims abstract description 29
- 239000002910 solid waste Substances 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 230000036571 hydration Effects 0.000 claims abstract description 7
- 238000006703 hydration reaction Methods 0.000 claims abstract description 7
- 230000008569 process Effects 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 7
- 230000002195 synergetic effect Effects 0.000 claims abstract description 7
- 239000002131 composite material Substances 0.000 claims abstract description 6
- 238000003756 stirring Methods 0.000 claims description 12
- 239000002002 slurry Substances 0.000 claims description 8
- 238000002156 mixing Methods 0.000 claims description 5
- PASHVRUKOFIRIK-UHFFFAOYSA-L calcium sulfate dihydrate Chemical compound O.O.[Ca+2].[O-]S([O-])(=O)=O PASHVRUKOFIRIK-UHFFFAOYSA-L 0.000 claims description 4
- 239000011499 joint compound Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000005303 weighing Methods 0.000 claims description 4
- 238000004131 Bayer process Methods 0.000 claims description 3
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical group [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 3
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 3
- 235000011116 calcium hydroxide Nutrition 0.000 claims description 3
- 239000000920 calcium hydroxide Substances 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 abstract description 7
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract description 4
- 239000002994 raw material Substances 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- 238000005056 compaction Methods 0.000 abstract description 2
- 239000004568 cement Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 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
- 229910052799 carbon Inorganic materials 0.000 description 3
- 239000000047 product Substances 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- CSDREXVUYHZDNP-UHFFFAOYSA-N alumanylidynesilicon Chemical compound [Al].[Si] CSDREXVUYHZDNP-UHFFFAOYSA-N 0.000 description 2
- 239000002585 base Substances 0.000 description 2
- 229910001653 ettringite Inorganic materials 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 230000036541 health Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 238000003895 groundwater pollution Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/143—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being phosphogypsum
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/14—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements
- C04B28/142—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements
- C04B28/144—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing calcium sulfate cements containing synthetic or waste calcium sulfate cements the synthetic calcium sulfate being a flue gas desulfurization product
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- 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
- C04B2111/00663—Uses not provided for elsewhere in C04B2111/00 as filling material for cavities or the like
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Soil Conditioners And Soil-Stabilizing Materials (AREA)
- Treatment Of Sludge (AREA)
Abstract
A red mud-based premixed fluid state solidified soil and a preparation method thereof relate to the technical field of solid waste resource utilization, wherein industrial solid waste red mud and fly ash are used as base materials, lime and gypsum are used as curing agents, and the composite synergistic effect of the hydration process of the red mud, the fly ash, the lime and the gypsum is utilized to form the red mud-based premixed fluid state solidified soil; the red mud-based ready-mixed fluidized solidified soil comprises the following components in percentage by mass: 60-70% of red mud; 20-25% of fly ash; lime 5-10%; 5-10% of gypsum; the water-solid ratio is: 0.3 to 0.5; the proportioning and preparation method has simple flow and high production efficiency, greatly reduces the raw material cost and the production cost, and is beneficial to actual production and popularization; the ready-mixed fluid solidified soil has the characteristics of self-leveling and self-compaction, does not need manual tamping, and reduces the construction cost.
Description
Technical Field
The invention relates to the technical field of solid waste resource utilization, in particular to red mud-based ready-mixed fluidized solidified soil and a preparation method thereof.
Background
As is known, the red mud is strong alkaline solid waste discharged in the alumina production process, the utilization rate of the red mud in the prior art is low, the red mud is mainly treated in a damming and piling mode, and a large amount of piled red mud occupies a large amount of land, so that huge resource waste and higher maintenance cost are caused; because the red mud contains a large amount of sodium ions which can permeate into the ground to cause land alkalization and groundwater pollution, and cause great potential safety hazards to ecological environment and human health, the comprehensive utilization of the red mud becomes a difficult problem to be solved in the alumina industry; but the red mud contains active ingredients such as silicon-aluminum substances and the like which have positive effects on strength, and provides favorable conditions for recycling the red mud.
In recent years, a novel backfill material, namely premixed fluid-state solidified soil, is developed and applied, and the premixed fluid-state solidified soil is used as a low-strength engineering material with controllable quality, can be used for filling engineering, comprises foundation grooves of municipal pipe galleries, municipal pipe network burying, backfilling of deep foundation pits and narrow or special-shaped spaces of buildings and the like, and also comprises mine goaf backfilling, so that the problems that the backfill material and surrounding structures are not uniformly settled and engineering diseases are induced due to difficulty in using mechanical tamping in backfilling of narrow or special-shaped spaces encountered in the engineering construction process are effectively solved.
However, the prior art has the following disadvantages: (1) at present, the prior study is to prepare the fluid-state solidified soil by taking cement or cement clinker as main raw materials and blending fly ash, slag and the like, and the cement consumption is relatively high; however, cement is a product with high energy consumption and high carbon emission, and CO in cement industry 2 The emission is about national CO 2 About 15% of the total emission; (2) the existing premixed fluid state solidified soil adopts cement as a cementing material, and the solidified soil is easy to shrink and crack after hardening, has poor stability, influences engineering quality and causes safety problems; (3) backfilling of the municipal engineering on the part with higher quality requirement, and high engineering cost caused by material cost and complexity of construction process; (4) the utilization rate of industrial solid waste resources such as red mud in the prior art is low.
Therefore, the red mud-based ready-mixed fluidized solidified soil with stable volume is prepared by utilizing the composite synergistic effect among a plurality of solid wastes such as red mud, so that the reduction of carbon emission while the utilization of solid waste resources is particularly important.
Disclosure of Invention
In order to overcome the defects in the background art, the invention discloses red mud-based ready-mixed fluidized solidified soil and a preparation method thereof, and solves the technical problems of high difficulty in recycling solid wastes, high carbon emission and poor stability of the traditional cementing material in the prior art.
In order to achieve the purpose, the invention adopts the following technical scheme:
the red mud-based ready-mixed fluidized solidified soil is formed by taking industrial solid waste red mud and fly ash as base materials and lime and gypsum as curing agents and utilizing the composite synergistic effect of hydration processes of the red mud, the fly ash, the lime and the gypsum; the red mud-based ready-mixed fluidized solidified soil comprises the following components in percentage by mass:
60-70% of red mud; 20-25% of fly ash; lime 5-10%; 5-10% of gypsum; the water-solid ratio is: 0.3 to 0.5.
The red mud-based premixed fluidized solidified soil is Bayer process red mud, and Fe thereof is selected as the red mud 2 O 3 The content of (2) is 33% -40%, siO 2 The content of (2) is 11% -16%, al 2 O 3 19-25%, caO 2-6%, na 2 The content of O is 11-17%, the pH is more than 12, and the specific surface area is 300-500 m 2 /kg。
The red mud-based premixed fluidized solidified soil and the fly ash Fe 2 O 3 The content of (2) - (15 percent), siO) 2 The content of (C) is 40-50%, al 2 O 3 The content of (2) is 20-29%, the content of CaO is 3-5%, and the specific surface area is 300-500 m 2 /kg。
The red mud-based ready-mixed fluidized solidified soil is characterized in that slaked lime powder, ca (OH) is selected as the lime 2 The mass content is more than 90 percent. Specific surface area of 300-500 m 2 /kg。
The red mud-based ready-mixed flow stateSolidifying the soil, wherein the gypsum is one of desulfurized gypsum and phosphogypsum, and CaSO 4· 2H 2 The content of O is more than or equal to 90 percent; the content of CaO in the gypsum is 33% -40%, SO 3 The content of (2) is 44% -51%, siO 2 The content of (2) to (6) and the specific surface area of 300 to 500m 2 /kg
The preparation method of the red mud-based ready-mixed fluidized solidified soil comprises the following specific operations:
s1: weighing red mud, fly ash, lime and gypsum according to the proportion;
s2, sequentially adding the water, lime and gypsum with the formula amount into a stirrer, and stirring for 60 seconds to prepare curing agent slurry;
and S3, adding the red mud and the fly ash into a stirrer, mixing and stirring the mixture with the slurry for more than 120 seconds, and obtaining the red mud-based ready-mixed fluidized solidified soil based on the condition that the stirring uniformity and the fluidity meet the requirements.
Due to the adoption of the technical scheme, the invention has the following beneficial effects:
1. according to the red mud-based ready-mixed fluidized solidified soil and the preparation method thereof, alkali in the red mud and sulfate in the desulfurized gypsum play a role in synergistic activation of silicon-aluminum substances in the red mud and the fly ash, and OH in lime - The hydration and gelation capacities of the red mud and the fly ash can be further improved; in a red mud-based solidified soil material system compounded with lime and desulfurized gypsum, the desulfurized gypsum has micro-expansibility, and can reduce the generation of early cracks; the composite synergistic effect of the hydration process of the red mud, the fly ash, the lime and the gypsum is fully utilized to generate products such as C-S-H gel, AFt (ettringite) and the like, and the hydration products can effectively bond a red mud fly ash system, strengthen a crystallization structure net of the system and improve the strength of a solidified soil body; the ettringite improves the early strength of a solidified soil system, expands in volume during formation, fills the pores of a structural mesh, improves the compactness of the system, thereby improving the dry shrinkage deformation resistance of the whole structure, improving the volume stability of ready-mixed fluid solidified soil, having better effect in projects such as pipe gallery backfilling and the like, and being capable of achieving the required engineering characteristics such as pipe gallery backfilling and the like; .
2. According to the red mud-based premixed fluidized solidified soil and the preparation method thereof, industrial solid wastes such as red mud are used in a large amount as raw materials, the red mud utilization rate is high, the problems of large stockpiling and uneconomic treatment modes, potential safety hazards to ecological environment and human health and the like in the prior art can be solved, the recycling of the industrial solid wastes such as red mud is realized, and a powerful support is provided for the development of the alumina industry; the proportioning and preparation method has simple flow and high production efficiency, greatly reduces the raw material cost and the production cost, and is beneficial to actual production and popularization; the ready-mixed fluid solidified soil has the characteristics of self-leveling and self-compaction, does not need manual tamping, and reduces the construction cost.
Detailed Description
The invention will be explained in more detail by the following examples, the purpose of which is to protect all technical improvements within the scope of the invention.
The red mud-based premixed fluid state solidified soil is formed by taking industrial solid waste red mud and fly ash as base materials and lime and gypsum as curing agents and utilizing the composite synergistic effect of the hydration process of the red mud, the fly ash, the lime and the gypsum; the red mud-based ready-mixed fluidized solidified soil comprises the following components in percentage by mass: 60-70% of red mud; 20-25% of fly ash; lime 5-10%; 5-10% of gypsum; the water-solid ratio is: 0.3 to 0.5.
Preferably, the red mud is Bayer process red mud, and Fe thereof 2 O 3 The content of (2) is 33% -40%, siO 2 The content of (2) is 11% -16%, al 2 O 3 19-25%, caO 2-6%, na 2 The content of O is 11-17%, the pH is more than 12, and the specific surface area is 300-500 m 2 /kg。
Preferably, the fly ash Fe 2 O 3 The content of (2) - (15 percent), siO) 2 The content of (C) is 40-50%, al 2 O 3 The content of (2) is 20-29%, the content of CaO is 3-5%, and the specific surface area is 300-500 m 2 /kg。
Preferably, the lime is slaked lime powder, ca (OH) 2 The mass content is more than 90 percent. Specific surface area of 300-500 m 2 /kg。
Preferably, the gypsum is one of desulfurized gypsum and phosphogypsum, and CaSO 4· 2H 2 The content of O is more than or equal to 90 percent; the content of CaO in the gypsum is 33% -40%, SO 3 The content of (2) is 44% -51%, siO 2 The content of (2) to (6) and the specific surface area of 300 to 500m 2 /kg。
The preparation method of the red mud-based ready-mixed fluidized solidified soil comprises the following specific operations:
s1: weighing red mud, fly ash, lime and gypsum according to the proportion;
s2, sequentially adding the water, lime and gypsum with the formula amount into a stirrer, and stirring for 60 seconds to prepare curing agent slurry;
and S3, adding the red mud and the fly ash into a stirrer, mixing and stirring the mixture with the slurry for more than 120 seconds, and obtaining the red mud-based ready-mixed fluidized solidified soil based on the condition that the stirring uniformity and the fluidity meet the requirements.
Example 1
The red mud-based premixed fluidized solidified soil is prepared from the following components in percentage by mass: the water-solid ratio is 0.3; 65% of red mud; 25% of fly ash; lime 5%; 5% of desulfurized gypsum.
Example 2
The red mud-based premixed fluidized solidified soil is prepared from the following components in percentage by mass: the water-solid ratio is 0.4; 65% of red mud; 20% of fly ash; lime 10%; 5% of desulfurized gypsum.
Example 3
The red mud-based premixed fluidized solidified soil is prepared from the following components in percentage by mass: the water-solid ratio is 0.5; 70% of red mud; 20% of fly ash; lime 5%; phosphogypsum 5%.
Examples 1 to 3 were carried out according to the following method: s1: weighing red mud, fly ash, lime and gypsum according to the proportion; s2, sequentially adding the water, lime and gypsum with the formula amount into a stirrer, and stirring for 60 seconds to prepare curing agent slurry; and S3, adding the red mud and the fly ash into a stirrer, mixing and stirring the mixture with the slurry for more than 120 seconds, and obtaining the red mud-based ready-mixed fluidized solidified soil based on the condition that the stirring is uniform and the fluidity meets the requirements.
The slump/expansion and compressive strength of the red mud-based premixed fluidized solidified soil provided in examples 1 to 3 of the present application were tested according to T/BGEA001-2019 technical Standard for premixed fluidized solidified soil filling engineering, and the test results are shown in Table 1:
table 1:
the invention is not described in detail in the prior art.
The embodiments selected herein for the purposes of disclosing the present invention are presently considered to be suitable, but it is to be understood that the present invention is intended to include all variations and modifications of the embodiments falling within the spirit and scope of the invention.
Claims (6)
1. A red mud-based ready-mixed fluidized solidified soil is characterized in that: the method comprises the steps of taking industrial solid waste red mud and fly ash as base materials, lime and gypsum as curing agents, and forming red mud-based ready-mixed fluidized curing soil by utilizing the composite synergistic effect of the hydration process of the red mud, the fly ash, the lime and the gypsum; the red mud-based ready-mixed fluidized solidified soil comprises the following components in percentage by mass:
60-70% of red mud; 20-25% of fly ash; lime 5-10%; 5-10% of gypsum; the water-solid ratio is: 0.3 to 0.5.
2. The red mud-based ready-mixed fluidized solidified soil of claim 1, characterized in that: the red mud is Bayer process red mud, and Fe thereof 2 O 3 The content of (2) is 33% -40%, siO 2 The content of (2) is 11% -16%, al 2 O 3 19-25%, caO 2-6%, na 2 The content of O is 11-17%, the pH is more than 12, and the specific surface area is 300-500 m 2 /kg。
3. The red mud-based ready-mixed fluidized solidified soil of claim 1, characterized in that: the fly ash Fe 2 O 3 The content of (2) - (15 percent), siO) 2 The content of (C) is 40-50%, al 2 O 3 The content of (2) is 20-29%, and CaO contentThe amount is 3 to 5 percent, and the specific surface area is 300 to 500m 2 /kg。
4. The red mud-based ready-mixed fluidized solidified soil of claim 1, characterized in that: the lime is slaked lime powder, ca (OH) 2 The mass content is more than 90 percent. Specific surface area of 300-500 m 2 /kg。
5. The red mud-based ready-mixed fluidized solidified soil of claim 1, characterized in that: the gypsum is one of desulfurized gypsum and phosphogypsum, and CaSO 4· 2H 2 The content of O is more than or equal to 90 percent; the content of CaO in the gypsum is 33% -40%, SO 3 The content of (2) is 44% -51%, siO 2 The content of (2) to (6) and the specific surface area of 300 to 500m 2 /kg。
6. A method for preparing a red mud-based ready-mixed fluidized solidified soil by using the method according to any one of claims 1 to 5, which comprises the following steps:
s1: weighing red mud, fly ash, lime and gypsum according to the proportion;
s2, sequentially adding the water, lime and gypsum with the formula amount into a stirrer, and stirring for 60 seconds to prepare curing agent slurry;
and S3, adding the red mud and the fly ash into a stirrer, mixing and stirring the mixture with the slurry for more than 120 seconds, and obtaining the red mud-based ready-mixed fluidized solidified soil based on the condition that the stirring uniformity and the fluidity meet the requirements.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311611777.7A CN117645460A (en) | 2023-11-29 | 2023-11-29 | Red mud-based ready-mixed fluidized solidified soil and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311611777.7A CN117645460A (en) | 2023-11-29 | 2023-11-29 | Red mud-based ready-mixed fluidized solidified soil and preparation method thereof |
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