CN106866052A - A kind of red mud slag geo-polymer and preparation method thereof - Google Patents

A kind of red mud slag geo-polymer and preparation method thereof Download PDF

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CN106866052A
CN106866052A CN201710126301.2A CN201710126301A CN106866052A CN 106866052 A CN106866052 A CN 106866052A CN 201710126301 A CN201710126301 A CN 201710126301A CN 106866052 A CN106866052 A CN 106866052A
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red mud
slag
polymer
geo
activator
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CN106866052B (en
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罗忠涛
康少杰
张美香
刘垒
刘正辉
王亚洲
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Zhengzhou University
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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
    • C04B28/006—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 mineral polymers, e.g. geopolymers of the Davidovits type
    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Ceramic Engineering (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Inorganic Chemistry (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Treatment Of Sludge (AREA)
  • Soil Conditioners And Soil-Stabilizing Materials (AREA)
  • Curing Cements, Concrete, And Artificial Stone (AREA)

Abstract

The invention discloses a kind of red mud slag geo-polymer and preparation method thereof, the red mud slag geo-polymer is to excite to form through compound alkali-activator as primary raw material with red mud and slag.The invention realizes the efficient utilization to red mud, two kinds of industrial solid castoffs of slag especially red mud, and the invention has and can carry out continuous prodution, and technical process is simple, low cost, non-secondary pollution, many advantages, such as resulting product function admirable.

Description

A kind of red mud-slag geo-polymer and preparation method thereof
Technical field
The present invention relates to geo-polymer field, and in particular to a kind of red mud-slag geo-polymer and preparation method thereof.
Background technology
Red mud is the subsidiary a kind of strong basicity solid waste for producing in aluminum oxide smelting process, at present whole world red mud pilling Amount is close to 3,000,000,000 tons, and its comprehensive utilization ratio is only 15% or so.China is right due to the limitation of the factors such as development technique level The comprehensive utilization ratio of red mud is also far away from this.Most red mud can only utilize the stockyard air storage of large area, air-dried The airborne dust that red mud is produced is to cause one of arch-criminal of local haze weather instantly, while the strong basicity component in red mud is also right Ground water regime, soil and surface vegetation etc. cause severe contamination and destruction.
Containing a large amount of sial components with lateral reactivity in red mud, this causes that red mud has and prepares the latent of geo-polymer Matter, while as raw material prepares geo-polymer the alkali in red mud can be made to be converted into the favourable thing for preparing geo-polymer with red mud Matter.Although studied on geo-polymer being prepared to red mud at present, existing defects are gone back, such as latest domestic research is reported In refer to using red mud and prepare geo-polymer as raw material, its means is that first red mud is calcined, and is then swashed by alkali again Hair realizes the after polymerization of red mud, but calcination process causes production cost to greatly improve and is restricted its popularization and application； Also be exactly used red mud as a small amount of spike when geo-polymer is prepared, for example have research with high-performance metakaolin, Used as matrix, by the control of red mud volume within 20%, this utilization of dissolving to red mud is extremely limited flyash etc..
The content of the invention
The present invention seeks on the premise of red mud is utilized to greatest extent, there is provided one kind is with red mud and slag as primary raw material Be made with preferable compression strength（7d compression strength>20MPa, 28d compression strength>38MPa）Geo-polymer.
It is a further object of the present invention to provide a kind of preparation method of red mud-slag geo-polymer, the method operative employee Skill is simple, with low cost, is capable of achieving the utilization of efficiently dissolving to red mud.
To realize object above, the present invention uses following technical scheme：
A kind of red mud-slag geo-polymer, it is excited by the composite granule that red mud and slag are constituted through compound alkali-activator Form, composite granule is 1 with the mass ratio of compound alkali-activator：0.6-0.85；Wherein the mass percent of composite granule is constituted For：Red mud 50%-70% and slag 30%-50%, compound alkali-activator is allocated by waterglass, NaOH and water and obtained, its modulus It is 1.0-2.0, solid content is 18%-42%.
Further preferably, the modulus for being combined alkali-activator is 1.2-1.6, and solid content is 30%-38%.
The quality requirement of the red mud is：Moisture content≤3%, calcium oxide content≤15%, dioxide-containing silica≤20%, oxygen Change aluminium content≤25%, fineness is tailed over less than 15% for 75um after grinding.
The slag is blast-furnace cinder micro-powder, and its quality requirement is：Calcium oxide content≤45%, dioxide-containing silica≤ 35%, alumina content≤12%, Blain specific surface 400-450m2/Kg。
The quality requirement of the waterglass is：Baume degrees（°Bé）It is 50.4, sodium oxide content >=12.8%, silica contains Amount >=29.2%.
The preparation method of red mud-slag geo-polymer, comprises the following steps：
1）Composite granule is prepared：Red mud, slag are chosen, red mud and slag are then mixed to get composite granule in proportion, be aged It is standby；
2）Compound alkali-activator is prepared：Using sodium hydroxide solution adjustment waterglass modulus for 1.0-2.0, solid content be 18%- 42%, it is standby；
When adjusting the modulus and solid content of waterglass, first according to the initial modulus of purchase waterglass, solid content and target modulus, consolidate Content calculates the amount of required NaOH and water, then that NaOH is soluble in water, after after sodium hydroxide solution cooling plus Enter and be made compound alkali-activator in purchased waterglass；
3）According to cement paste preparation technology, composite granule is pressed 1 with compound alkali-activator：The mass ratio mixing of 0.6-0.85 is stirred Mix uniform, inject the mould of 40mm*40mm*40mm；
4）By step 3）Form removal after resulting product overlay film natural curing 24h, gained test block is sprinkled water conserve to one under field conditions (factors) Determining age obtains red mud-slag geo-polymer.
The present invention has advantages below and feature：
1st, the present invention be using two kinds of industrial solid castoffs of red mud and slag as the raw material for preparing geo-polymer, it is raw materials used Cheap and easy to get, preparation process is simple is capable of achieving continuous prodution, with good economic benefit.
2nd, the present invention is that, using red mud as primary raw material, its volume is 50%-70%, has broken previous red mud low-dosage and has utilized Limitation, the utilization of dissolving to red mud large dosage is realized, to solve the environmental pollution, the land seizure that are brought by red mud piling up The problems such as provide effective way, with great social benefit.
3rd, the present invention is used in the allocation process of compound alkali-activator to the alkali in red mud, has prepared mechanical property Good red mud-slag the geo-polymer of energy, it has more preferable durability than traditional cement-based gelling material.
4th, when prepared by the present invention in alkaline environment, the Ca that the Ca-O fractures in slag micropowder are discharged2+In liquid phase Si(OH)4Monomer and Al (OH)4 -Monomer reaction so that contain substantial amounts of zeagonite in prepared geo-polymer mineral facies Phase, zeagonite has the title of molecular sieve, and the phase macrostructure is rendered as loose porous tridimensional network.Therefore madely If matter polymer is used for heavy metals immobilization field, " treatment of wastes with processes of wastes against one another " can be really realized, both having dissolved to utilize for the large dosage of red mud refers to Understand outlet, also provide method simple and easy to apply and with low cost to heavy metals immobilization, realize " double in environmental improvement Win ".
Specific embodiment
For a better understanding of the present invention, present invention is described further with reference to embodiment, but this hair Bright content is not limited solely to the following examples, and embodiment is not construed as limitation of the invention.
Embodiment 1：
1）Raw material is chosen：A. Henan Great Wall Chinalco red mud dump bulk red mud is chosen, grinding treatment is dried to it, Red mud powder is obtained, its moisture content≤3%, calcium oxide content≤15%, dioxide-containing silica≤20%, alumina content≤25%, Fineness is tailed over less than 15% for 75um；
B. slag be commercially available blast-furnace cinder, calcium oxide content≤45%, dioxide-containing silica≤35%, alumina content≤12%, Blain specific surface 430m2/Kg；
2）It is prepared by composite granule：Red mud powder and slag micropowder after drying grinding, red mud powder and slag micropowder are taken by quality Mass percent is respectively 50% and 50%, obtains composite granule by both are dry-mixed, and 24h is standby for ageing；
3）Compound alkali-activator is prepared：The consumption of NaOH and water according to needed for target modulus, solid content are calculated, by required hydrogen Sodium oxide molybdena particle is slowly added in water and is stirred continuously obtain sodium hydroxide solution, is mended after sodium hydroxide solution is cooled into room temperature Fill the water reduced by water evaporation；By sodium hydroxide solution and liquid soluble glass（Quality requirement is：Baume degrees（°Bé）For 50.4, sodium oxide content >=12.8%, dioxide-containing silica >=29.2%）Uniform mixing, prepared modulus is 1.6 and solid content is 30% compound alkali-activator, it is standby；
4）Shaping and maintenance：According to cement paste preparation technology, composite granule and compound alkali-activator are pressed 1:0.85 quality Slurry is obtained than adding mixer to be sufficiently mixed stirring, slurry is injected the mould of 40mm*40mm*40mm, overlay film maintenance 24h tears open Mould；Test block is sprinkled water to conserve to certain age under field conditions (factors) and obtains final product red mud-slag geo-polymer.
Gained test block maintenance to 7d and 28d compression strength（According to Test method for strength of hydraulic cement mortar (ISO methods), similarly hereinafter） Respectively 39.64MPa and 65.06MPa.
Embodiment 2：
1）Raw material is chosen：Step 1 in the same embodiment 1）；
2）It is prepared by composite granule：Red mud powder and slag micropowder after drying grinding, red mud powder and slag micropowder are taken by quality Mass percent is respectively 60% and 40%, obtains composite granule by both are dry-mixed, and 24h is standby for ageing；
3）Compound alkali-activator is prepared：The consumption of NaOH and water according to needed for target modulus, solid content are calculated, by required hydrogen Sodium oxide molybdena particle is slowly added in water and is stirred continuously obtain sodium hydroxide solution, is mended after sodium hydroxide solution is cooled into room temperature Fill the water reduced by water evaporation；By sodium hydroxide solution and liquid soluble glass（Quality requirement is：Baume degrees（°Bé）For 50.4, sodium oxide content >=12.8%, dioxide-containing silica >=29.2%）Uniform mixing, prepared modulus is 1.4 and solid content is 30% compound alkali-activator, it is standby；
4）Shaping and maintenance：According to cement paste preparation technology, composite granule and compound alkali-activator are pressed 1:0.75 quality Slurry is obtained than adding mixer to be sufficiently mixed stirring, slurry is injected the mould of 40mm*40mm*40mm, overlay film maintenance 24h tears open Mould；Test block is sprinkled water to conserve to certain age under field conditions (factors) and obtains final product red mud-slag geo-polymer.
Gained test block maintenance to the compression strength of 7d and 28d distinguishes 28.16MPa and 52.24MPa.
Embodiment 3：
1）Raw material is chosen：Step 1 in the same embodiment 1）；
2）It is prepared by composite granule：Step 2 in the same embodiment 2）；
3）Compound alkali-activator is prepared：The consumption of NaOH and water according to needed for target modulus, solid content are calculated, by hydroxide Sodium particle is slowly added in a certain amount of aqueous solution and is stirred continuously, and solution is cooled to be supplemented after room temperature and is reduced because of water evaporation Water；By sodium hydroxide solution and liquid soluble glass（Quality requirement is：Baume degrees（°Bé）It is 50.4, sodium oxide content >= 12.8%, dioxide-containing silica >=29.2%）Uniform mixing, the compound alkali-activator that prepared modulus is 1.6 and solid content is 34%, It is standby；
4）Shaping and maintenance：Step 4 in the same embodiment 2）；
Gained test block maintenance to the compression strength of 7d and 28d is respectively 30.75MPa and 53.85MPa.
Embodiment 4：
1）Raw material is chosen：Step 1 in the same embodiment 1）；
2）It is prepared by composite granule：Red mud powder and slag micropowder after drying grinding, red mud powder and slag micropowder are taken by quality Mass percent is respectively 70% and 30%, obtains composite granule by both are dry-mixed, and 24h is standby for ageing；
3）Compound alkali-activator is prepared：Step 3 in the same embodiment 1）；
4）Shaping and maintenance：According to cement paste preparation technology, composite granule and compound alkali-activator are pressed 1:0.65 quality Slurry is obtained than adding mixer to be sufficiently mixed stirring, slurry is injected the mould of 40mm*40mm*40mm, overlay film maintenance 24h tears open Mould；Test block is sprinkled water to conserve to certain age under field conditions (factors) and obtains final product red mud-slag geo-polymer.
Gained test block maintenance to the compression strength of 7d and 28d is respectively 23.52MPa and 38.20MPa.
Embodiment 5：
Difference with embodiment 4 is that the modulus of compound alkali-activator is 1.2 and solid content is 34%；
Gained test block maintenance to the compression strength of 7d and 28d is respectively 27.19MPa and 44.20MPa.
The test block pressure resistance intensity of embodiment 1-5 meets 7d compression strength>20MPa, 28d compression strength>The requirement of 38MPa.
Red mud of the present invention-slag geo-polymer, the weight/mass percentage composition of red mud, slag in composite granule is combined The modulus of alkali-activator, solid content its each bound and interval value can realize the present invention, just do not enumerate herein Embodiment.
Case of comparative examples 1：
Difference with embodiment 1 is：The mass ratio of composite granule and compound alkali-activator is 1:0.5.Now slurry because Denseness causes greatly very much mobility too poor, cannot moulding by casting in experimentation.
Case of comparative examples 2：
Difference with embodiment 1 is：The modulus of compound alkali-activator is 0.8, and solid content, solid content is 22%.
Gained test block maintenance to the compression strength of 7d and 28d is respectively 22.77MPa and 18.10MPa.
Case of comparative examples 3：
Difference with embodiment 1 is：Red mud powder and slag micropowder mass percent are respectively when prepared by composite granule 80% and 20%.
Gained test block maintenance to the compression strength of 7d and 28d is respectively 12.33MPa and 22.97MPa.
Case of comparative examples 4：
Difference with embodiment 5 is：The mass ratio of composite granule and compound alkali-activator is 1:1.
Gained test block maintenance to the compression strength of 7d and 28d is respectively 10.56MPa and 17.94MPa and slurry setting time It is long（>24h）.
Case of comparative examples 5：
Difference with embodiment 5 is：The modulus of compound alkali-activator is 2.2, and solid content is 42%.
Gained test block maintenance to the compression strength of 7d and 28d is respectively 17.91MPa and 30.64MPa.
Found out by case of comparative examples 1-5, when some technical parameters change, 7d the or 28d compression strength of gained test block It is difficult to meet the preferable compression strength of product（7d compression strength>20MPa, 28d compression strength>38MPa）Demand.

Claims (8)

1. a kind of red mud-slag geo-polymer, it is characterised in that：It is compound by the composite granule warp that red mud and slag are constituted Alkali-activator is excited and formed, and composite granule is 1 with the mass ratio of compound alkali-activator：0.6-0.85；The wherein matter of composite granule Amount percentage constitutes and is：Red mud 50%-70% and slag 30%-50%, is combined alkali-activator and is allocated by waterglass, NaOH and water And obtain, its modulus is 1.0-2.0, and solid content is 18%-42%.
2. red mud as claimed in claim 1-slag geo-polymer, it is characterised in that the quality requirement of the red mud is：Contain Water rate≤3%, calcium oxide content≤15%, dioxide-containing silica≤20%, alumina content≤25%, fineness is 75um sieves after grinding Tail over less than 15%.
3. red mud as claimed in claim 1-slag geo-polymer, it is characterised in that the slag is blast-furnace cinder micro-powder, Its quality requirement is：Calcium oxide content≤45%, dioxide-containing silica≤35%, alumina content≤12%, Blain specific surface 400-450m2/Kg。
4. red mud as claimed in claim 1-slag geo-polymer, it is characterised in that the quality requirement of the waterglass is： Baume degrees is 50.4, sodium oxide content >=12.8%, dioxide-containing silica >=29.2%.
5. the preparation method of red mud described in any one of claim 1-4-slag geo-polymer, it is characterised in that including following Step：
1）Composite granule is prepared：Red mud, slag are chosen, red mud and slag are then mixed to get composite granule in proportion, be aged It is standby；
2）Compound alkali-activator is prepared：Using sodium hydroxide solution adjustment waterglass modulus for 1.0-2.0, solid content be 18%- 42%, it is standby；
3）Composite granule is pressed 1 with compound alkali-activator：The mass ratio of 0.6-0.85 is mixed, casting；
4）By step 3）Form removal after resulting product overlay film natural curing, gained test block is sprinkled water conserve to certain age under field conditions (factors) Phase is to obtain red mud-slag geo-polymer.
6. the preparation method of red mud as claimed in claim 5-slag geo-polymer, it is characterised in that：The matter of the red mud Measuring requirement is：Moisture content≤3%, calcium oxide content≤15%, dioxide-containing silica≤20%, alumina content≤25%, after grinding Fineness is tailed over less than 15% for 75um.
7. the preparation method of red mud as claimed in claim 5-slag geo-polymer, it is characterised in that：The slag is height Stove slag micropowder, its quality requirement is：Calcium oxide content≤45%, dioxide-containing silica≤35%, alumina content≤12%, suddenly Family name's specific surface area 400-450m2/Kg。
8. the preparation method of red mud as claimed in claim 5-slag geo-polymer, it is characterised in that：The waterglass Quality requirement is：Baume degrees is 50.4, sodium oxide content >=12.8%, dioxide-containing silica >=29.2%.
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Cited By (16)

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CN109336456A (en) * 2018-10-25 2019-02-15 山东大学 A kind of red mud base asphalt mixture warm-mixing agent and preparation method thereof
CN110759656A (en) * 2019-11-19 2020-02-07 太原理工大学 Normal-temperature single red mud geopolymer and preparation method thereof
CN110818305A (en) * 2019-11-19 2020-02-21 太原理工大学 Method for adjusting geopolymer strength and realizing high-strength geopolymer
CN110862243A (en) * 2019-11-19 2020-03-06 太原理工大学 Low-cost high-strength red mud-coal series metakaolin geopolymer
CN110885209A (en) * 2019-12-11 2020-03-17 大连理工大学 Red mud/yellow river sediment base polymer flood prevention stone and preparation method thereof
CN111841296A (en) * 2020-07-27 2020-10-30 北京北科环境工程有限公司 Desulfurizing agent for blast furnace gas and preparation method thereof
CN111847995A (en) * 2020-05-28 2020-10-30 山东高速集团有限公司 Red mud-based solid waste pervious concrete and preparation method and application thereof
CN112694292A (en) * 2021-01-22 2021-04-23 太原理工大学 Low-shrinkage high-strength red mud-slag geopolymer and preparation method thereof
CN113307556A (en) * 2021-06-22 2021-08-27 安徽理工大学 Ultrahigh-strength red mud light material and preparation method thereof
CN113336502A (en) * 2021-06-30 2021-09-03 中南大学 Geopolymer curing material for multi-metal contaminated soil and preparation method thereof
CN114477880A (en) * 2022-04-08 2022-05-13 郑州大学 Geopolymer-based waterproof and leak-stopping material for heat distribution pipeline and preparation method of material
CN115521787A (en) * 2022-10-17 2022-12-27 中国科学院南京土壤研究所 Lead-zinc smelting site heavy metal compound contaminated soil remediation agent and application thereof
CN116081987A (en) * 2023-02-16 2023-05-09 中国海洋大学 Red mud-based fiber composite cementing material and preparation method thereof
CN116789433A (en) * 2023-05-30 2023-09-22 东南大学 Vinyl acetate-ethylene copolymer emulsion modified geopolymer repair material and preparation method thereof
CN116813257A (en) * 2023-07-05 2023-09-29 中冀建勘集团有限公司 Red mud and fly ash geopolymer material capable of being used for pumping and underwater pouring, preparation method and construction process
US11958788B2 (en) * 2022-05-30 2024-04-16 Hubei University Of Technology Method of preparing alkali activation material by using red mud-based wet grinding and carbon sequestration and application thereof

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CN105289462A (en) * 2015-10-20 2016-02-03 山东建筑大学 Light porous red mud based inorganic polymer medium having metal ion adsorption performance

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109336456A (en) * 2018-10-25 2019-02-15 山东大学 A kind of red mud base asphalt mixture warm-mixing agent and preparation method thereof
CN110759656A (en) * 2019-11-19 2020-02-07 太原理工大学 Normal-temperature single red mud geopolymer and preparation method thereof
CN110818305A (en) * 2019-11-19 2020-02-21 太原理工大学 Method for adjusting geopolymer strength and realizing high-strength geopolymer
CN110862243A (en) * 2019-11-19 2020-03-06 太原理工大学 Low-cost high-strength red mud-coal series metakaolin geopolymer
CN110862243B (en) * 2019-11-19 2020-10-02 太原理工大学 Low-cost high-strength red mud-coal series metakaolin geopolymer
CN110885209A (en) * 2019-12-11 2020-03-17 大连理工大学 Red mud/yellow river sediment base polymer flood prevention stone and preparation method thereof
CN111847995A (en) * 2020-05-28 2020-10-30 山东高速集团有限公司 Red mud-based solid waste pervious concrete and preparation method and application thereof
CN111847995B (en) * 2020-05-28 2021-06-01 山东高速集团有限公司 Red mud-based solid waste pervious concrete and preparation method and application thereof
CN111841296A (en) * 2020-07-27 2020-10-30 北京北科环境工程有限公司 Desulfurizing agent for blast furnace gas and preparation method thereof
CN112694292A (en) * 2021-01-22 2021-04-23 太原理工大学 Low-shrinkage high-strength red mud-slag geopolymer and preparation method thereof
CN113307556A (en) * 2021-06-22 2021-08-27 安徽理工大学 Ultrahigh-strength red mud light material and preparation method thereof
CN113336502A (en) * 2021-06-30 2021-09-03 中南大学 Geopolymer curing material for multi-metal contaminated soil and preparation method thereof
CN114477880A (en) * 2022-04-08 2022-05-13 郑州大学 Geopolymer-based waterproof and leak-stopping material for heat distribution pipeline and preparation method of material
US11958788B2 (en) * 2022-05-30 2024-04-16 Hubei University Of Technology Method of preparing alkali activation material by using red mud-based wet grinding and carbon sequestration and application thereof
CN115521787A (en) * 2022-10-17 2022-12-27 中国科学院南京土壤研究所 Lead-zinc smelting site heavy metal compound contaminated soil remediation agent and application thereof
CN115521787B (en) * 2022-10-17 2024-09-10 中国科学院南京土壤研究所 Lead-zinc smelting site heavy metal composite pollution soil restoration agent and application thereof
CN116081987A (en) * 2023-02-16 2023-05-09 中国海洋大学 Red mud-based fiber composite cementing material and preparation method thereof
CN116789433A (en) * 2023-05-30 2023-09-22 东南大学 Vinyl acetate-ethylene copolymer emulsion modified geopolymer repair material and preparation method thereof
CN116789433B (en) * 2023-05-30 2024-05-03 东南大学 Vinyl acetate-ethylene copolymer emulsion modified geopolymer repair material and preparation method thereof
CN116813257A (en) * 2023-07-05 2023-09-29 中冀建勘集团有限公司 Red mud and fly ash geopolymer material capable of being used for pumping and underwater pouring, preparation method and construction process

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