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Geopolymers are inorganic, typically ceramic, materials that form long-range, covalently bonded, non-crystalline (amorphous) networks. Obsidian (volcanic glass) fragments are a component of some geopolymer blends. Commercially produced geopolymers may be used for fire- and heat-resistant coatings and adhesives, medicinal applications, high-temperature ceramics, new binders for fire-resistant fiber composites, toxic and radioactive waste encapsulation and new cements for concrete. The properties and uses of geopolymers are being explored in many scientific and industrial disciplines: modern inorganic chemistry, physical chemistry, colloid chemistry, mineralogy, geology, and in other types of engineering process technologies. Geopolymers are part of polymer science, chemistry and technology that forms one of the major areas of materials science. Polymers are either organic material, i.e. carbon-based, or inorganic polymer, for example silicon-based. The organic polymers comprise the classes of natural polymers (rubber, cellulose), synthetic organic polymers (textile fibers, plastics, films, elastomers, etc.) and natural biopolymers (biology, medicine, pharmacy). Raw materials used in the synthesis of silicon-based polymers are mainly rock-forming minerals of geological origin, hence the name: geopolymer. Joseph Davidovits coined the term in 1978 and created the non profit French scientific institution (Association Loi 1901) Institut Géopolymère (Geopolymer Institute).
Cementing material based on large-dosage shield muck as well as preparation method and application of cementing material
The invention relates to the technical field of gelling materials, in particular to a gelling material based on high-doping-amount shield muck and a preparation method and application thereof.The preparation method comprises the following steps that after original shield muck is sequentially subjected to mechanical crushing, forced homogenization and drying to constant weight, gradient heating calcination is conducted, then rapid cooling is conducted immediately, and the high-doping-amount shield muck is obtained; carrying out two-stage ball milling and sieving to obtain active shield muck powder; preparing a solid dry blend; preparing a composite alkali activator solution; and mixing the composite alkali activator solution with the solid dry blend, primarily stirring and infiltrating, adding the residual mixing water, stirring to obtain uniform geopolymer slurry, and compacting and molding to obtain the cementing material. The problems that in the prior art, a high-performance geopolymer cementing material based on shield muck is low in activity, insufficient in strength, small in shield muck mixing amount, single in performance and poor in volume stability are solved.
Owner:UNIV OF SCI & TECH BEIJING
Geopolymer-based recycled fine aggregate shield synchronous grouting material and preparation method thereof
The invention discloses a geopolymer-based recycled fine aggregate shield synchronous grouting material and a preparation method thereof. The grouting material is composed of a cementing material, an alkali activator, aggregate, a water reducing agent, a retarder and water, and the cementing material is a geopolymer precursor and is composed of fly ash, slag and metakaolin; the aggregate is composed of river sand and recycled fine aggregate. By optimizing the proportion and the preparation process, the material has the characteristics of excellent flowability, controllable setting time, high early strength, good impermeability, good durability and the like, and is suitable for synchronous grouting of shield tunnels in water-rich sand layers, high-water-pressure stratums or corrosion stratums. The invention also provides two optimization methods which are respectively based on a response surface method and a BP neural network combined genetic algorithm to realize multi-objective optimization of slurry performance. According to the material, dependence on traditional cement and gravel resources is remarkably reduced, energy consumption and carbon emission are reduced, high-added-value resource utilization of industrial solid waste and construction waste is achieved, and the material conforms to the development direction of green low-carbon building materials.
Owner:GUANGXI UNIV +2
Geopolymer foam adsorbent material with vein-like multi-stage network pore structure and preparation method thereof
ActiveCN116618014BOther chemical processesSpecific water treatment objectivesMicroorganismPtru catalyst
The application belongs to the technical field of new materials, and relates to a geopolymer foam material with a vein-shaped multistage network pore structure and a preparation method thereof. The application comprises the following steps: pretreating luffa, cow horn fiber and coconut fiber respectively, and loading catalysts; uniformly mixing fly ash floating beads, metakaolin, slag, an anionic surfactant, the cow horn fiber loaded with catalysts and the coconut fiber loaded with catalysts to obtain mixed powder; mixing the mixed powder with an alkali activator to prepare a slurry, adding a chemical foaming agent into the slurry, and then pouring the slurry into the luffa loaded with catalysts, and then sequentially performing foaming and curing treatment; and performing freeze-drying and calcination on the cured material, and the geopolymer foam material is obtained; the geopolymer foam material prepared by the application has a vein-shaped multistage pore structure, can have physical and chemical adsorption properties on heavy metal ions and cationic dyes, and can remove pollutants such as macromolecules, microorganisms, perfluoroalkyl compounds and ammonia nitrogen compounds.
Owner:SHANDONG UNIV
Reinforced geopolymer gun barrel
A gun barrel can include a cylindrical layer defining an internal bore; and a geopolymer layer on the cylindrical layer; and a continuous fiber reinforced composite on the geopolymer layer. Advantageously, the geopolymer layer can include a thermally conductive material dispersed in a geopolymer matrix. Such a multilayered gun barrel can improve the heat transfer characteristics of the gun barrel relative to a gun barrel without such a geopolymer layer. The geopolymer layer additionally can include a density-reducing material dispersed through the geopolymer matrix to further improve heat transfer and / or weight of the gun barrel relative to a gun barrel composed entirely of metal.
Owner:AVIENT CORP
Geopolymer slurries and geopolymer compositions including fluid loss control materials, and related methods
A geopolymer precursor includes an alkaline reactive solid material containing aluminum, silicon, and oxygen, and a fluid loss control material having an ionic stability property that has a first value in water and a second value in a 3M solution of NaOH, wherein a ratio of the second value to the first value is in a range of 0.5 to 2.0. The fluid loss control material may be, or may include a crosslinked polymer, which may include a reaction product of one or more of acrylamide, 2-acrylamido-2-methyl propane sulfonic acid, N,N‑dimethylacrylamide, N,N‑diethylacrylamide, vinyl acetate, or another monomer, and a crosslinker including one or more of methylene bisacrylamide, triallyl amine, pentaerythritol allyl ether, triallyl-triazine-trione, or another material. The geopolymer precursor may include an activator, an alkaline solution having pH of at least about 9, or both.
Owner:SCHLUMBERGER TECH CORP +3
Systems and methods for producing wellbore fluids
Systems, methods, and apparatus for producing wellbore fluids using drill cuttings, geopolymers, and / or mine tailings, and compositions relating to the same are disclosed. The drill cuttings, geopolymers, and / or mine tailings may be used to create appropriate wellbore fluids to be used in wellbore fluid supply systems, such as spacer fluids, lead barrier fluids, tail barrier fluids. In one embodiment, the wellbore fluids result in one or more substantially impermeable barrier sheaths within the wellbore, which barrier sheaths may be cementitious or non-cementitious.
Owner:EXERO WELL INTEGRITY
An apparatus for converting industrial waste residues into geopolymer
ActiveCN224398205UDrying solid materialsDrying machines with non-progressive movementsSlagGeopolymer
The utility model discloses an equipment for converting industrial waste slag into geopolymer, including drying box, the inner bottom surface of drying box is inclined plane, and a plurality of shovel plates are pasted to the inner bottom surface of drying box, the top surface of vertical board of shovel plate is connected with arc plate, and the top surface of arc plate is fixedly connected with the stirring rod in drying box, and the top surface of the flow guide orifice plate is connected through the connecting rod between the inner top surface of drying box, and the inner concave arc surface of arc plate is arranged and is inclined to set up to the direction of the direction of approaching drying box inlet port, and the inner arc surface of flow guide orifice plate is ladder shape, and the stirring rod on drying box is installed shovel plate and is shovelled up the raw material of drying box inner bottom surface and is transported to flow guide orifice plate through arc plate, and the raw material slowly falls along flow guide orifice plate, and the flow path of raw material is followed, thereby prolonging the time of raw material in drying box and being convenient for the full drying of raw material, and the drying efficiency of raw material is improved.
Owner:INNER MONGOLIA SUYUE TECHNOLOGY CO LTD
Geopolymer recycled concrete production sorting device and working method thereof
The application discloses a sorting device for geopolymer recycled concrete production and a working method thereof. The sorting device comprises a main body, a feeding cavity is formed in the upper end of the inside of the main body, a sorting chamber is formed below the feeding cavity and is communicated with the feeding cavity, a PLC controller is mounted on one side of the front end of the main body, rotating doors are movably mounted on the two sides and the front and back ends of the main body, a rotating shaft is rotatably arranged in the inside of the feeding cavity, spiral conveying blades are welded to the outer wall of the rotating shaft, a threaded transmission rod is rotatably arranged on one side of the upper end of the inside of the sorting chamber, and a moving block is threadedly connected to the outer part of the threaded transmission rod. The sorting device can avoid the influence of metal impurities on subsequent sorting, improve the sorting effect, make the metal impurities enter the inside of a second collecting frame, facilitate a user to collect and take out the metal impurities, and can inhale generated dust to avoid the diffusion of the dust, thus being good in practicability.
Owner:FUJIAN UNIV OF TECH
Magnetic geopolymer as well as preparation method and application thereof
The invention discloses a magnetic geopolymer as well as a preparation method and application thereof, and relates to the technical field of solid waste resource utilization and wastewater treatment. The preparation method comprises the following steps: drying nickel slag, crushing and grinding, adding calcium oxide to adjust alkalinity, and heating and melting to obtain a nickel slag melt; the nickel slag melt is subjected to water quenching, and magnetic slag micro powder is obtained through drying, crushing and screening; and mixing the magnetic slag micro powder with an alkaline activator, injecting the mixture into a mold, performing constant-temperature maintenance, demolding, and crushing to obtain the magnetic geopolymer. The magnetic geopolymer prepared by the invention has high adsorption capacity and rapid adsorption kinetics for multiple heavy metal ions in water, and has excellent magnetic separation performance.
Owner:LANZHOU UNIVERSITY OF TECHNOLOGY
A geopolymer zinc-rich anticorrosive coating, and a preparation method and use method thereof
The application provides a geopolymer zinc-rich anticorrosive coating and a preparation method and use method thereof. The geopolymer zinc-rich anticorrosive coating comprises slag, metakaolin, water glass, zinc powder, a filler and an additive. The application solves the problem of poor mechanical properties caused by excessive zinc powder content. The problem of poor protection of the coating caused by excessive zinc powder content can be effectively avoided by high-temperature (450-500 DEG C) baking of the geopolymer zinc-rich anticorrosive coating. The molten zinc powder can completely fill the pores between the coating and the zinc powder and form a dense passivation film. Compared with the traditional zinc-rich coating, the high-temperature baked zinc-rich anticorrosive coating has higher hardness, wear resistance, corrosion resistance and heat resistance.
Owner:GUANGXI UNIV
A rapid-setting anti-freezing geopolymer pavement base material and a preparation method thereof
The application provides a quick-setting anti-freezing geopolymer pavement base material and a preparation method thereof, and belongs to the technical field of geopolymer materials. The application takes red mud and titanium white slag as precursor materials, takes carbide slag as an alkali activator, and simultaneously adds anti-freezing reinforcing materials compounded by white mud, ceramic powder and brick powder. The geopolymer pavement base material is formed by compounding multiple components, fully utilizes multiple high-alkaline and silicon-aluminum-rich solid waste resources, has the comprehensive advantages of low carbon, environmental protection, low cost, short construction period, excellent anti-freezing performance and the like, breaks through the technical bottlenecks of slow low-temperature setting and poor durability of the pavement base material in cold regions, and is suitable for highway, municipal road and border road engineering in high-cold regions. The application has important engineering significance and popularization value for green traffic infrastructure construction in cold regions.
Owner:HUNAN UNIV +1
Joule heat curing multi-element solid waste geopolymer concrete and preparation method thereof
This invention relates to Joule-cured multi-component solid waste polymer concrete and its preparation method. It utilizes Joule heat generated by electricity to cure the polymer, significantly improving curing efficiency and the mechanical properties of the polymer concrete. If the water-cement ratio in the concrete raw materials is not higher than 0.3, nano-carbon fibers need to be added to the raw materials; if the water-cement ratio is higher than 0.3, nano-carbon fibers are not initially added. Carbon fibers, or a mixture of carbon fibers and nano-carbon fibers, are uniformly dispersed in water before being added to a uniformly mixed precursor powder. Finally, steel fibers are added and mixed uniformly to form a slurry with a multi-level conductive network. The raw materials include: precursor powder, alkali activator, steel fibers, carbon fibers, and water. The steel fibers account for 0.5~2.5 vol% of the precursor powder, the carbon fibers for 0.4~1.0 vol%, the nano-carbon fibers for 0~0.10 vol%, and the water for 0.2~0.43 wt% of the precursor powder.
Owner:HEBEI UNIV OF TECH
Roadbed slope protection composition based on solid waste-geopolymer and construction method thereof
The invention relates to the technical field of roadbed slope protection, discloses a roadbed slope protection composition based on solid waste-geopolymer and a construction method of the roadbed slope protection composition, and aims to solve the problems of high carbon emission, low solid waste utilization rate, strong ecological destructiveness and weak disaster resistance of a traditional roadbed slope protection material. According to the invention, fly ash, desulfurized gypsum, mineral powder and pretreated red mud are taken as core raw materials, and are matched with a geopolymer activator and a heavy metal stabilizer to form a cement-free flow state system with a high solid waste mixing ratio; during construction, a casing pipe is not needed, through the drilling-layered pouring technology, the solidification body is naturally attached to soil through the fluidity, a multi-deformation solidification structure without rigid cutting is formed, the anti-scouring and anti-collapse capacity of a roadbed slope can be enhanced through the structure, damage of natural disasters such as flood to a roadbed can be effectively resisted, and the construction period is shortened. Meanwhile, the ecological compatibility of the mechanical property and the plant root system penetration rate is considered.
Owner:BEIJING JUJU NEW MATERIALS CO LTD
A cementitious material based on large amount of shield muck and a preparation method and application thereof
The present application relates to the technical field of cementitious materials, in particular to a cementitious material based on large amount of shield muck and a preparation method and application thereof, comprising the following steps: the original shield muck is sequentially subjected to mechanical crushing, forced homogenization, drying to constant weight, gradient temperature calcination, rapid cooling immediately after, two-stage ball milling and sieving to obtain active shield muck powder; preparing solid dry mixture; preparing composite alkali activator solution; mixing the composite alkali activator solution with the solid dry mixture, preliminarily stirring and soaking, adding the remaining mixing water to stir to obtain uniform polymer slurry, then vibrating and forming to obtain the cementitious material. The present application solves the problems of low activity, insufficient strength, small amount of shield muck, single performance and poor volume stability of the high-performance geopolymer cementitious material based on shield muck in the prior art.
Owner:UNIV OF SCI & TECH BEIJING
Geopolymer-based aerogel fireproof coating, preparation method and application thereof
The present application relates to the technical field of fireproof coating, and particularly relates to a geopolymer-based aerogel fireproof coating, a preparation method and application thereof. The fireproof coating comprises the following components in the following proportions: geopolymer precursor material, alkaline activator, aerogel, fiber and water; the mass ratio of the alkaline activator and the geopolymer precursor material is 0.52-0.63:1; the volume content of the aerogel is 70%-85%; the mass content of the fiber is 0-1% and is not 0; and the water-binder ratio is 0.5-0.7. The added fiber can effectively inhibit the high-temperature shrinkage of the coating, and at the same time, to a certain extent, improve the tensile strength and tensile bonding strength, so as to ensure the structural stability and continuous fireproofing capability of the coating in a fire scene; by optimizing the aerogel content and the water-binder ratio, the coating realizes an excellent balance between the thermal conductivity and the compressive strength, and has the characteristics of high strength and efficient heat insulation; the production process of the present application is low-carbon and environmentally friendly, and has economic and environmental benefits.
Owner:SOUTH CHINA UNIV OF TECH +2
All-solid-waste-based geopolymer grouting material and preparation method thereof
The invention relates to the technical field of solid waste resource utilization and geopolymer grouting material preparation, and discloses an all-solid-waste-based geopolymer grouting material and a preparation method thereof. The all-solid-waste-based geopolymer grouting material comprises the following components in parts by weight: 60-70 parts of slag, 20-30 parts of red mud, 10 parts of silica fume, 15.6-28 parts of an alkali activator, 0.8 part of a water reducing agent and 93.12-103.04 parts of water, wherein the total amount of the slag, the red mud and the silica fume is 100 parts. The all-solid-waste-based geopolymer grouting material provided by the invention has the characteristics of low price and easy acquisition of raw materials, simplicity and convenience in preparation, good working performance, high strength and the like. Solid waste resources are recycled, the use of cement is reduced, and good environment-friendly and economic benefits are achieved.
Owner:KUNMING UNIV OF SCI & TECH
A low-dielectric high-strength phosphate-based polymer and a preparation method thereof
The application discloses a kind of low dielectric high-strength phosphate-based geopolymer and preparation method thereof.The preparation method includes the following steps: (1) acid activator pretreatment: phosphoric acid solution is mixed with water to carry out ion balance treatment, and fully ionized pre-equilibrium acid activator is obtained;(2) mixed pulping: siliceous raw material is mixed with the pre-equilibrium acid activator, the molar ratio of P / Al is controlled to be 0.6-1.2, and uniform geopolymer slurry is obtained by stirring;(3) forming and curing: the slurry is cast into shape and cured, and an Al-O-P covalent bond dominated network skeleton is constructed to obtain a green geopolymer;(4) dehydration treatment: the green geopolymer is subjected to dehydration treatment.The application effectively solves the problems of high loss, easy moisture absorption and mutual exclusion of strength and dielectric properties of inorganic cementing materials at high frequency, and is suitable for 5G / 6G high-frequency communication, radar wave-transparent, electronic packaging and intelligent building fields.
Owner:SOUTH CHINA UNIV OF TECH
Geopolymer compositions and methods with soluble salts
Described herein are compositions and methods or using soluble salts in geopolymer applications. The compositions include an aluminosilicate source, an activator, a carrier fluid, and a soluble salt additive. In some embodiments, the soluble salt additive is NaCl, LiCl, CaCl2, or a combination thereof. The method includes preparing a geopolymer composition that is a pumpable mixture comprising an aluminosilicate source, an activator, a carrier fluid, and a soluble salt additive in a concentration selected to control an initial rate of a geopolymerization reaction. The geopolymer composition is placed in the subterranean well and allowed to harden into a solid geopolymer.
Owner:SERVICES PETROLIERS SCHLUMBERGER SA +1
Two-component method for preparing geopolymer foams
The present invention belongs to the field of geopolymer materials. It relates to a method for preparing a geopolymer foam, the geopolymer foam thereof and its uses thereof. The geopolymer foam is obtained by mixing a first component being an alkaline foaming composition with a second component being a geopolymer slurry.
Owner:IMERTECH SAS
A method for in-situ synthesis of visible light photocatalytic geopolymers from vanadium-containing solid waste
PendingCN122076421Acompletely absorbedWide variety of sourcesCatalyst activation/preparationCement productionSlurryVisible light photocatalytic
This invention relates to a method for in-situ synthesis of visible light photocatalytic geopolymers from vanadium-containing solid waste. The technical solution is as follows: vanadium-containing solid waste is ground into powder, and the resulting vanadium-containing solid waste powder is mixed with vanadium pentoxide powder. The resulting vanadium-containing geopolymer precursor is mixed with an alkaline activator and stirred evenly to obtain a vanadium-containing geopolymer slurry. The vanadium-containing geopolymer slurry is placed in a mold, cured, demolded, cured a second time, and crushed to obtain a crushed vanadium-containing geopolymer. The crushed vanadium-containing geopolymer is mixed with deionized water to obtain a vanadium-containing geopolymer aqueous solution. Bismuth nitrate solution is added to the vanadium-containing geopolymer aqueous solution, mixed evenly, and the pH value is adjusted. A hydrothermal reaction is then carried out. Solid-liquid separation, washing, and drying are performed to obtain the visible light photocatalytic geopolymer. This invention can efficiently utilize low-vanadium content and completely eliminate vanadium. The in-situ synthesis of visible light photocatalytic geopolymers from vanadium-containing solid waste not only effectively decomposes organic pollutants under visible light conditions but also effectively fixes vanadium in the vanadium-containing solid waste.
Owner:WUHAN UNIV OF SCI & TECH
Machine learning based geopolymer production optimization method and system
The application provides a geopolymer preparation optimization method and system based on machine learning. Applied to the field of material science and machine learning technology, the method comprises the following steps: collecting geopolymer preparation experimental data and performing pretreatment; performing nonlinear regression modeling on the geopolymer performance based on four machine learning regression algorithms to construct a geopolymer performance prediction model; calculating and assigning weights according to the mean square error of each machine learning model on the validation set to obtain a performance prediction result; receiving target performance parameters and initial raw material ratio range input by a user, performing performance prediction by using the trained geopolymer performance prediction model, and searching for an optimal ratio combination satisfying the target performance constraint through an optimization algorithm; and preparing a coal gangue-slag-fly ash geopolymer grouting material according to the optimal ratio combination. The application effectively improves the prediction accuracy and model generalization ability, and realizes intelligent recommendation and accurate performance prediction of raw material ratios.
Owner:GUIZHOU INST OF COAL SCI
Composite cementing material building floor sound insulation mortar and preparation method thereof
The invention provides composite cementing material building floor sound insulation mortar and a preparation method thereof, and belongs to the technical field of novel building materials. Aiming at strong-alkalinity, high-humidity and intermittent impact coupling special environments such as hospitals and the like, a geopolymer precursor composed of metakaolin and blast furnace slag micro powder and an alkaline activator are introduced and interwoven with a cement hydration product to form an alkali-corrosion-resistant composite gel matrix; meanwhile, the composite corrosion inhibitor with the pH response release characteristic is adopted, and corrosion inhibition components are released during strong alkaline invasion to form a composite protective film; and regenerated elastic particles subjected to surface silanization treatment are selected as a damping filler. Under the synergistic effect of the three components, the mutually aggravated failure cycle of chemical erosion and mechanical impact is interrupted, so that the long-term sound insulation stability, mechanical durability and corrosion resistance of the sound insulation mortar in a severe environment are remarkably improved.
Owner:HUBEI SHIYU NEW BUILDING MATERIALS CO LTD
Superfine iron tailing-based geopolymer cementing material as well as preparation method and application thereof
The invention discloses a superfine iron tailing-based geopolymer cementing material as well as a preparation method and application thereof. The geopolymer cementing material comprises the following raw material components in parts by weight: 10 to 500 parts of superfine iron tailings, 10 to 600 parts of fly ash, 10 to 600 parts of blast furnace slag, 10 to 50 parts of solid sodium hydroxide crystals and 10 to 100 parts of solid sodium silicate powder. In the invention, the superfine iron tailings, the fly ash and the blast furnace slag play a remarkable synergistic effect, and the proportion of the fly ash to the blast furnace slag can influence the physical and mechanical properties of a gelling system to different degrees. The cementing materials with different strengths can be used in a graded and classified manner, the potential of efficiently realizing three-in-one of solid waste absorption, carbon emission reduction and cost reduction is achieved, and green transformation of mining industry / energy cities is promoted.
Owner:SHANDONG UNIV
Preparation process of fire-resistant geopolymer ultra-high performance concrete wall material
The invention relates to the technical field of concrete materials, and particularly discloses a preparation process of a fire-resistant geopolymer ultra-high performance concrete wall material, which comprises the following steps: (1) uniformly mixing low-melting-point glass beads, elemental tin powder and water glass, and drying to obtain a mixture A; and uniformly mixing the obtained modified particles with silica fume after crushing, carrying out calcination treatment in a protective atmosphere, and cooling to room temperature after the calcination treatment is completed, so as to obtain the fire-resistant modifier additive. And (2) uniformly mixing fly ash, slag powder, an alkali activator, fine aggregate, steel fiber, a water reducer and the refractory modifier additive as raw materials, adding mixing water, and uniformly stirring to obtain the concrete wall material. By improving the component system of the concrete, the fire resistance of the geopolymer ultra-high performance concrete material is effectively improved, and the residual compressive strength is improved.
Owner:QINGDAO AGRI UNIV
Devices for evaporation and inhalation of nicotine
There is provided an inhalation device for delivering a deliverable agent in the form of an aerosol or vapor to a user. The device comprises a solid, porous carrier material having a defined porosity, and a deliverable agent located within the pores of the carrier material. The device is operable to heat the carrier material and vaporize the deliverable agent. Deliverable agents that may be delivered to the user include nicotine. Suitable materials for the porous carrier material include chemically bonded ceramic materials and geopolymeric materials.
Owner:EMPLICURE AB
Acid-activated regenerative brick-concrete micro-powder-partially-geopolymers battery and preparation method thereof
The application discloses an acid-activated regenerated brick-mixed micro-powder-metakaolin geopolymer battery and a preparation method thereof. The geopolymer battery is formed by sequentially stacking and pouring a geopolymer positive electrode layer, a geopolymer electrolyte layer and a geopolymer negative electrode layer. The three layers all comprise regenerated brick-mixed micro-powder and metakaolin. The preparation method comprises the following steps: preparing geopolymer positive electrode layer slurry, geopolymer electrolyte layer slurry and geopolymer negative electrode layer slurry respectively; sequentially pouring the positive electrode layer, the electrolyte layer and the negative electrode layer, and vibrating and standing each layer after pouring according to preset parameters, and arranging copper-plated steel fibers in the whole structure by a magnetic field; and curing and coating the whole structure. The geopolymer battery has excellent conductivity, load capacity and interlayer bonding strength, and the whole structure is stable.
Owner:BEIJING UNIV OF CIVIL ENG & ARCHITECTURE
Binder compositions including lost circulation materials, and related methods and geopolymer compositions
A binder composition includes a cement composition, a geopolymer composition, or a combination thereof. The binder composition includes a binder material including at least one of cement or at least one aluminosilicate source, a lost circulation composition, and a sodium silicate. The lost circulation composition includes a first fiber material including nylon having an average length from about 5.0 mm to about 25.0 mm, and a second fiber material including chopped glass. Related methods and geopolymer compositions are also disclosed.
Owner:SCHLUMBERGER TECH CORP +3
Preparation method of full-coal-gangue-based geopolymer
The invention relates to a preparation method of a full-coal-gangue-based geopolymer, and belongs to the technical field of solid waste resource utilization. The method comprises the following steps: S1, mixing gangue ash with coal gangue raw ore powder to obtain a mixed solid; s2, adding alkali-activated liquid into the mixed solid, stirring and mixing to form slurry, molding the slurry, and curing to obtain a geopolymer; wherein the alkali-activated liquid is prepared from water glass, sodium hydroxide and water, the modulus of the alkali-activated liquid is 1-1.2, and the alkali-binder ratio of the alkali-activated liquid is 0.15-0.25. According to the method, the gangue raw ore is directly doped into the calcined gangue ash, so that the use amount of the gangue ash is greatly reduced, the process energy consumption is remarkably reduced, the emission of pollutants such as greenhouse gases, sulfur oxides and nitrogen oxides is reduced, and the coagulation time of the geopolymer is prolonged; the problems of high production cost and serious pollution of the existing gangue-based geopolymer are solved.
Owner:CHINA UNIV OF MINING & TECH
Lithium slag-based polymer microsphere composite phase change energy storage material and preparation method thereof
The application provides a composite phase change energy storage material using spodumene lithium extraction tailings (lithium tailings) as a carrier and a preparation method thereof. The geopolymer microspheres are prepared by a dispersion suspension method, and are washed, dried and calcined. Then, through heating and vacuum impregnation, the phase change energy storage material is stably encapsulated in the geopolymer microspheres, and a shaped composite phase change energy storage material is obtained. The application not only provides a phase change energy storage material with large heat storage capacity, excellent encapsulation performance, good chemical stability, strong anti-leakage capacity, strong cycle stability, strong heat conduction capacity and good light-heat conversion capacity, but also provides a new high-value utilization method of spodumene lithium extraction tailings.
Owner:CHENGDU UNIVERSITY OF TECHNOLOGY
A method of red mud treatment
This invention provides a method for treating red mud, comprising the following steps: First, red mud slurry from an aluminum plant is fed into a red mud storage tank, filtered to obtain an alkaline solution and red mud filter cake. The alkaline solution is returned to the aluminum plant, and the red mud filter cake is mixed with additives to form a red mud mixture. Second, the red mud mixture is fed into an electromagnetic rotary kiln for calcination. Within the electromagnetic rotary kiln, from the inlet to the outlet, the temperature varies in different sections: the first section is 25-600℃, the second section is 600-800℃, the third and fourth sections are 800-1000℃, and the fifth section is below 100℃. Third, the output material from the electromagnetic rotary kiln is subjected to dry magnetic separation. The magnetic separation includes two stages: the first stage involves weak magnetic separation of the cooled material to obtain iron concentrate powder and the first tailings; the second stage involves strong magnetic separation of the first tailings to obtain middlings and tailings. The middlings are titanium dioxide, and the tailings are geopolymers. This invention achieves zero-emission standards for the entire production process, has low production investment costs, and is easily compatible with the Bayer process in China.
Owner:LULIANG YAOJIN TECHNOLOGY INNOVATION CO LTD