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Elasticity reducing agent for low-carbon high-compactness sprayed concrete as well as preparation method and application of elasticity reducing agent
The invention discloses a low-carbon high-compactness shotcrete elasticity reducing agent and a preparation method and application thereof, and relates to the field of building material concrete admixtures, the elasticity reducing agent comprises the following components by mass: 53-73% of a rheological component, 15-25% of a tackifying component, 10-18% of an early strength component, and 0.5-4% of a setting adjusting component; the rheological component comprises manganese slag powder and silica fume, and the tackifying component is tailing powder loaded with nano modified cellulose ether. The viscosity of sprayed concrete is increased through the tackifying component, the slurry wrapping property of the concrete is improved, the yield stress of the concrete is improved through the rheological component, and the early strength component is combined to synergistically improve the wall-adhering and quick-hardening properties after the material is sprayed, so that the rebound rate is reduced; the nano-particles loaded on the organic matter are hydrated in pores, harmful pores are directionally filled, the compactness and strength of the sprayed concrete are effectively improved, and low-carbon, low-resilience and high-compactness of the sprayed concrete are achieved.
Owner:CCCC SECOND HARBOR ENGINEERING CO LTD
Monoclinic phase zirconium oxide nano powder as well as preparation method and application thereof
ActiveCN119143175AAdd lessReduce processing difficultySecondary cellsPositive electrodesPhysical chemistryZirconium oxychloride
The invention belongs to the technical field of superfine powder preparation and lithium battery materials, and particularly relates to monoclinic-phase zirconium oxide nano powder as well as a preparation method and application thereof. The preparation method comprises the following steps: adding zirconium oxychloride octahydrate into water for dissolving to obtain a zirconium oxychloride aqueous solution, then putting the zirconium oxychloride aqueous solution into a hydrothermal reaction kettle, heating to 140-160 DEG C for hydrothermal reaction, cooling to room temperature after the reaction is completed, and standing for precipitation; then adding ammonia water to carry out ammonolysis reaction, standing and aging, completely precipitating residual zirconium ions, separating the precipitate, washing and drying to obtain a zirconium hydroxide precursor; and finally, carrying out heat preservation calcination treatment at 850-950 DEG C in an air environment to obtain the monoclinic phase zirconium oxide nano powder. The preparation method is simple in preparation process, and toxic and harmful substances are not introduced. The obtained nano ZrO2 powder has the advantages of accurate chemical composition, small powder particle size and low Cl <-> content, and meets the specification requirements of lithium battery positive electrode material additives.
Owner:XIANDAO THIN FILM MATERIALS GUANGDONG CO LTD
High-compactness low-resilience sprayed concrete and preparation method thereof
ActiveCN119241181Areduce saggingIncrease plastic viscositySolid waste managementShotcreteAlkali free
The invention discloses high-compactness low-resilience shotcrete and a preparation method thereof, and relates to the field of shotcrete, the preparation method comprises the following steps: (1) respectively stacking a cementing material, a fine aggregate and a coarse aggregate by adopting an MAA model to obtain a design ratio of each internal raw material; and (2) fully mixing the cementing material, the fine aggregate, the coarse aggregate and the elasticity reducing agent which are obtained according to the design ratio in the step (1), adding water and a water reducing agent for mixing, and doping an accelerator in a manner of mixing with pressurized air to obtain the high-compactness low-resilience sprayed concrete. The early-strength elasticity reducing agent is adopted, pumpability of the sprayed concrete is improved, early hydration of the concrete is accelerated, under the combined action of the early-strength elasticity reducing agent and the alkali-free accelerator, the early mechanical property of the sprayed concrete is rapidly improved, and the construction efficiency of the sprayed concrete is improved. And by adopting multi-section close packing, close filling structures are respectively formed in the cementing material, the fine aggregate and the coarse aggregate, so that the plastic viscosity of the slurry and the compactness of the concrete are effectively improved.
Owner:CCCC SECOND HARBOR ENGINEERING CO LTD +1
Synthesis method of dibromohydantoin
PendingCN122079896AReduce ineffective disproportionation lossesavoid storageOrganic chemistryElectrolysis componentsElectrolysisCentrifugation
The invention belongs to the technical field of dibromohydantoin production, and particularly provides a dibromohydantoin synthesis method which comprises the following steps: S1, preparing a raw material aqueous solution, namely respectively mixing dimethyl hydantoin, sodium bromide and liquid caustic soda NaOH with deionized water to form a dimethyl hydantoin aqueous solution, a sodium bromide aqueous solution and a liquid caustic soda NaOH aqueous solution; s2, premixing the raw material aqueous solution, namely mixing the aqueous solution of dimethyl hydantoin, sodium bromide and caustic soda liquid NaOH prepared in S1 to obtain a premix; s3, electrochemical in-situ bromination reaction: introducing the premix into a micro-channel reactor provided with an electrolysis electrode, and applying current to the premix to obtain a dibromohydantoin initial solution; and S4, crystallizing, separating and drying the product, carrying out cooling crystallization through a three-stage stepped cooling method to obtain a dibromohydantoin crystal, carrying out centrifugal separation to obtain a dibromohydantoin wet product, and then drying to obtain a dibromohydantoin finished product. The method can improve the generation stability and the product quality of the dibromohydantoin.
Owner:WEIFANGDONGYUAN LIANHAI ENVIRONMENTAL TECH CO LTD
Road surface crack pouring device for road maintenance
ActiveCN222541246UImprove liquidityeasy accessClimate change adaptationRoads maintainenceVehicle frameRoad surface
A road surface crack pouring device for road maintenance comprises a frame which drives other parts to move in the crack direction, and further comprises an asphalt box which is erected on the frame; the flow guide mechanism is communicated with the asphalt tank; the width limiting assembly is attached to the side wall of the pavement crack, and asphalt enters the crack through the width limiting assembly; the stirring mechanism is used for stirring the asphalt of the flow guide mechanism; the lifting mechanism is connected with the stirring mechanism, and the lifting mechanism drives the stirring mechanism to vertically move. Asphalt flowing into the receiving hopper is stirred through rotation of the stirring head, bubbles in the asphalt are discharged, the probability that the bubbles are wrapped in crack asphalt is reduced, the crack pouring quality is improved, meanwhile, the fluidity of the asphalt is improved through stirring, the asphalt rapidly enters cracks, and the crack pouring efficiency is improved.
Owner:合肥市治超人员管理站
High density low rebound shotcrete and method of making same
The application discloses a kind of high density low rebound shotcrete and preparation method thereof, it is related to shotcrete field, and preparation method includes: (1), respectively to cementitious material, fine aggregate, coarse aggregate is using MAA model to be packed and the design ratio of each raw material in interior is obtained;(2), cementitious material, fine aggregate, coarse aggregate and the rebounding agent of design ratio obtained according to step (1) are fully mixed, water, water reducing agent is mixed, then by the way of mixing with pressurized air, incorporate accelerator, obtain high density low rebound shotcrete.The application uses early strength rebounding agent, improves the pumpability of shotcrete, accelerates the early hydration of concrete, under the joint action of alkali-free accelerator, rapidly improves the early mechanical properties of shotcrete, improves shotcrete construction efficiency.Multiple close packing is used, and cementitious material, fine aggregate, coarse aggregate respectively form close packing structure, effectively improve the plastic viscosity of paste and the compactness of concrete.
Owner:CCCC SECOND HARBOR ENGINEERING CO LTD +1
Low-carbon, high-density shotcrete de-elasticity agent, its preparation method, and application
This invention discloses a low-carbon, high-density shotcrete admixture, its preparation method, and its application, relating to the field of concrete admixtures in building materials. The admixture comprises the following components by mass percentage: 53-73% rheological component, 15-25% thickening component, 10-18% early-strength component, and 0.5-4% setting regulator component. The rheological component includes manganese slag powder and silica fume, and the thickening component is tailings powder loaded with nano-modified cellulose ether. This invention increases the cohesiveness of shotcrete and improves the slurry encapsulation of concrete through the thickening component, increases the yield stress of concrete through the rheological component, and synergistically improves the adhesion and rapid hardening performance of the material after spraying by combining with the early-strength component, thereby reducing the rebound rate. Furthermore, the nanoparticles loaded on organic matter hydrate in the pores, directionally filling harmful pores, effectively improving the density and strength of shotcrete, achieving low-carbon, low-rebound, and high-density shotcrete.
Owner:CCCC SECOND HARBOR ENGINEERING CO LTD
Method for co-producing lignite wax, fulvic acid and humic acid
PendingCN119529899ASimple process routeefficient extractionOrganic chemistryMineral wax recovery/refiningStrong acidsFulvic acid
The invention provides a method for co-production of lignite wax, fulvic acid and humic acid, and the method comprises the following steps: step S1, mixing lignite with an extraction agent for extraction, carrying out solid-liquid separation to obtain a lignite wax liquid and a first solid-phase residue, and carrying out extraction to make the mass ratio of the residual lignite wax in the obtained first solid-phase residue less than 1%; s2, the first solid-phase residue reacts with strong acid, and fulvic acid and a second solid-phase residue are obtained through separation after the reaction is finished; and S3, dissolving the second solid-phase residue by using an alkaline solution, and reacting the solution obtained by dissolving with an acidic solution to separate out humic acid. According to the method for co-producing the lignite wax, the fulvic acid and the humic acid, high-value development of Baoqing lignite is achieved, a traditional extraction agent can be replaced, the extraction rate of the lignite wax is guaranteed, and then the extraction rate of the fulvic acid and the extraction rate of the humic acid are increased.
Owner:CHINA SHENHUA COAL TO LIQUID & CHEM CO LTD
Transfer device for computer hardware production
InactiveCN119329978ATransport stableprevent slippingConveyorsLoading/unloadingSoftware engineeringComputers technology
The invention discloses a transfer device for computer hardware production, and relates to the technical field of computers, the transfer device comprises a support rod, the top of the support rod is fixedly connected with an electric conveyor, and the top of the electric conveyor is provided with an anti-slip mechanism; by arranging the anti-slipping mechanism, one side of the hardware is attached to the left side of the right fixing frame, and the other side of the hardware is attached to the connecting frame on the right side of the left fixing frame and the top frame, so that automatic clamping and fastening of the hardware are completed, the hardware is stably clamped to be conveyed to the high position, and the situation that the computer hardware does not fall off in the rising conveying process is avoided. And the problem of slipping due to the height difference is solved.
Owner:YANTAI HEHE INFORMATION TECH CO LTD
Vibrofilter
The utility model discloses a vibrating filter belongs to vibrating filter technical field, including body, storage tank and adjusting part, the storage tank sets up on the body, has been seted up in the storage tank and has the discharge gate, adjusting part sets up on the storage tank, the adjusting part includes the adjusting plate of adjusting discharge gate size, is connected with the adjusting lever on the adjusting plate, a plurality of hook plate of different height is arranged to the both sides of adjusting lever, the hanging rod that hangs on the hook plate is fixed on the adjusting lever, through the size of adjusting the discharge gate of storage tank, can change the flow of material from the discharge gate, can reduce the thickness of material layer at fixed landing point, reduce the package and extrusion of upper layer big material to lower layer small material, make small material more easily contact screen and smoothly screen, effectively solve the problem of not enough filtration.
Owner:ZHEJIANG NAJIE NEW MATERIAL TECH CO LTD
A special breaking system for lithium batteries
ActiveCN224293453Ureasonable designSimple structureGrain treatmentsBattery recyclingStructural engineeringMechanical engineering
The utility model relates to a kind of special crushing system for lithium battery, the crushing system includes crusher;The crusher is four-axis crusher;The crushing system further includes breaker, the breaker is connected with crusher, located after crusher.The design is reasonable, simple structure, adopts four-axis crusher to break lithium battery, and increases breaker, and the broken lithium battery is broken, and the size of discharge is uniform, and the powder rate is high.
Owner:ENERPAT JIANGSU ENVIRONMENTAL PROTECTION IND CO LTD
Self-adhesive lithium adsorbent as well as preparation method and application thereof
PendingCN119114037Acomplete structureLow dissolution rateOther chemical processesProcess efficiency improvementPhysical chemistryCatechol
The invention belongs to the technical field of lithium adsorbents, and discloses a self-adhesive lithium adsorbent as well as a preparation method and application thereof, and the self-adhesive lithium adsorbent comprises the following components in percentage by total weight of the lithium adsorbent: 85wt%-99wt% of lithium adsorbent precursor powder, 0.2 wt%-12wt% of a catechol interface agent and 0.2 wt%-12wt% of a polyamine interface aid. The lithium adsorbent is one or more of spherical particles, rod-shaped particles and irregular particles, and the average particle size is 0.5-2 mm; the saturated lithium adsorption capacity is 15-30 g / L; the solution loss rate is less than or equal to 0.01% / hundred cycles; and the wear rate is less than or equal to 0.1% / hundred cycles. The adsorption performance, the solution loss resistance and the abrasion resistance of the lithium adsorbent can be obviously improved, and the lithium adsorbent is particularly suitable for application scenes such as extraction of lithium from salt lake brine, recovery of lithium precipitation mother liquor, extraction of lithium from oil well brine and the like.
Owner:WANHUA CHEM GRP CO LTD
A method for preparing sodium carbonate based on ternary synthesis technology
PendingCN122254534AImprove utilization efficiencyImprove the uniformity of the reactionCarbonate preparationCarbonizationPhysical chemistry
The application relates to the technical field of inorganic chemical synthesis, in particular to a sodium carbonate preparation method based on ternary synthesis technology. The method takes sodium chloride, liquid ammonia and carbon dioxide as ternary raw materials, and through a'segmented carbonization-gradient temperature control crystallization-CO2 closed loop recovery-mother liquor optimization treatment' synergistic process, first, uniform crystal nuclei are induced through low-temperature pre-carbonization, then, sufficient reaction is promoted through medium-temperature deep carbonization, and the crystal structure is optimized by combining gradient cooling crystallization and aging, and the efficient recycling of carbon, ammonia and salt resources is realized. The application improves the carbon dioxide utilization rate and the product purity, optimizes the crystal particle size uniformity, reduces the energy consumption and the environmental protection load, the process is stable and easy to control, and has strong industrialization adaptability, and the obtained sodium carbonate can meet the strict requirements in the fields such as food processing, and has economic and environmental benefits.
Owner:JINCHANG ZHONGSHENGJI NEW MATERIAL CO LTD
Method for treating inorganic fluorine-containing wastewater
ActiveCN119349790BGood defluoridation effectreduce adhesionWater contaminantsTreatment involving filtrationSludgePhysical chemistry
The present application relates to wastewater treatment technical field, disclose a kind of processing method of inorganic fluorine-containing wastewater, comprising the following steps: the pH of inorganic fluorine-containing wastewater is adjusted to 2~4, calcium carbonate is loaded into carbide slag, and reaction is carried out;Coagulant is added to the wastewater after step S1 processing, coagulation and precipitation are carried out, and the precipitate is separated out.In the present application, the fluorine ion in wastewater is converted into calcium fluoride by using calcium carbonate loaded carbide slag, which can reduce the adhesion and wrapping of calcium fluoride on the surface of carbide slag, thereby achieving better wastewater defluorination effect under smaller carbide slag dosage, which is beneficial to reduce sludge amount.
Owner:HANGZHOU HENGJUN ENVIRONMENTAL ENG CO LTD
Preparation method for converting waste catalyst tail water aluminum sulfate into aluminum ammonium sulfate
PendingCN119637918AEfficient use ofgood chemical stabilityAluminium compoundsChemical recyclingPtru catalystChemical reaction
The invention discloses a preparation method for converting waste catalyst tail water into aluminum ammonium sulfate through aluminum sulfate, and relates to the technical field of waste catalyst tail water treatment.The method comprises the following steps that waste catalyst tail water is filtered in advance, solid impurities are removed, and meanwhile residual trace heavy metal ions in the waste catalyst tail water are further removed through ion exchange resin; the filtered tail water is concentrated; the method comprises the following steps: screening ammonium sulfate with the purity of more than 98% as an ammonium sulfate raw material, grinding the ammonium sulfate until the granularity is refined to 100-200 meshes, recrystallizing and purifying the ammonium sulfate, and filtering to obtain high-purity ammonium sulfate crystals; and chemical reaction equations. According to the method, aluminum sulfate in the waste catalyst tail water is effectively utilized and converted into aluminum ammonium sulfate, so that the utilization rate of valuable elements is increased, waste of aluminum sulfate resources is avoided, and the production cost is greatly reduced by utilizing the waste catalyst tail water; the heavy metal pollution index of the finally discharged wastewater is reduced, and the harm to the water body environment is reduced.
Owner:NINGBO SHUANGNENG ENVIRONMENTAL PROTECTION TECH CO LTD
Sampling cover assembly for particle monitoring system
PendingCN119487377AReduce cleaning requirementsreduce sizeWithdrawing sample devicesMicroorganismSoil science
The present application relates to a sampling cap assembly for a particle monitoring system, preferably a microbial gas (e.g., air) sampler or airborne particle counter. The present application also relates to a particle monitoring system comprising such a sampling cap assembly.
Owner:MERCK PATENT GMBH
Seawater-salt-mist-resistant corrosion-resistant cable and preparation method thereof
PendingCN119410057Areduce interactionImprove shear resistanceInsulated cablesInsulated conductorsBenzoic acidPolymer science
The invention discloses a seawater salt mist-resistant corrosion-resistant cable and a preparation method thereof, and relates to the technical field of corrosion-resistant cables. According to the invention, 3-(2-thienyl) acrylic acid, diethylene glycol dimethacrylate, a modified anti-ultraviolet agent and polyethylene are copolymerized to prepare modified polyolefin, a large side group is introduced into a main chain to form a non-coplanar structure, the distance and free volume between molecular chains are increased, the shearing resistance and impact resistance of the cable are improved, meanwhile, a thiophene structure can hinder bacterial replication, and the anti-ultraviolet performance of the cable is improved. And in cooperation with a long chain segment of diethylene glycol dimethacrylate, interaction and wrapping among polymer chain segments are reduced, the flexibility of polymer chains is improved, and the overall strength of the cable is improved. According to the modified anti-ultraviolet agent, 4-chloromethyl benzoic acid is combined with 4-(2-allyl)-catechol, a benzophenone structure is formed, the anti-ultraviolet performance is achieved, meanwhile, chlorine elements in the 4-chloromethyl benzoic acid have high resistance to acid and alkali chemical substances, and the anti-corrosion effect is achieved.
Owner:JIANGSU DIYI GROUP
Splicing plastic box structure, splicing storage rack and splicing table
ActiveCN222452892Ureduce packageImprove convenienceFoldable tablesStowable tablesLogistics managementStructural engineering
Owner:SHAOXING LETAO ELECTRIC APPLIANCE CO LTD
A method for precipitating cellulose acetate butyrate
The present invention relates to a method for precipitating cellulose acetate butyrate, wherein a liquid to be precipitated containing cellulose acetate butyrate is introduced into water containing crystal nuclei, and the water is depressurized and heated at the same time, and a large number of bubbles are generated during the boiling process of the water, and the impact force generated during the bubble bursting process is used to impact the crystal particles of the cellulose acetate butyrate, so as to avoid the particles from sticking to each other and agglomerating before hardening, thereby forming a cellulose acetate butyrate product with uniform particles and high bulk density. At the same time, due to the introduction of crystal nuclei and the operation at a certain temperature, the method can effectively reduce the encapsulation and adsorption of acetic acid and butyric acid by the product during the precipitation process, and can effectively reduce the amount of washing water used.
Owner:WANHUA CHEM GRP CO LTD
Preparation process of chlorzoxazone
PendingCN121949235Areduce solubilityavoid pollutionOrganic chemistryChemical recyclingBiotechnologyActivated carbon
The invention relates to the field of biological medicine, in particular to a chlorzoxazone preparation process which comprises synthesis of 2-nitro-4-chlorophenol, synthesis of a 2-amino-4-chlorophenol methanol solution, preparation of a chlorzoxazone crude product and refining of chlorzoxazone, the 2-nitro-4-chlorophenol can be synthesized at normal temperature and normal pressure by adopting p-chlorophenol with lower cost as a starting material, and the 2-nitro-4-chlorophenol can be used for preparing chlorzoxazone. The addition rate of hydrochloric acid is strictly controlled in the preparation of the crude product, urea byproducts generated by urea digestion can be avoided, impurity wrapping of the product can be reduced through hot filtration and slow cooling crystallization, the purity of the product is further improved, and in the refining link, activated carbon decoloration can adsorb small molecular impurities, and the purity of the product is improved. High-content impurities and trace single impurities can be removed through two times of crystallization, high-purity purification of the product is achieved, and meanwhile salt slag pollution generated by traditional acid-base refining is avoided.
Owner:HENAN KANGDA PHARMA