17results about How to "Efficient curing" patented technology

The application relates to the technical field of roadbed engineering, in particular to a roadbed filler based on high-water-content gold flotation tailings and a preparation method thereof.A roadbed filler based on high-water-content gold flotation tailings is prepared from the following raw materials: gold flotation tailings, modified precipitation material, curing agent, activator, solid modifier and anti-cracking agent; the water content of the gold flotation tailings is lower than 20%; in the application, the porous precipitation material and the low-carbon cementing material are used to perform pre-dehydration treatment and efficient curing treatment on the high-water-content gold flotation tailings, so that the roadbed filler with low carbon and low cost and with high strength and low shrinkage is obtained.

The application discloses a kind of bauxite catalytic microwave-assisted pyrolysis of waste and old textile resourceization method, belong to microwave-assisted catalytic pyrolysis of waste and old textile processing field.The specific steps are as follows: after washing and dewatering treatment, waste and old textile is dried, granulation;After drying bauxite, grinding and sieving;Waste and old textile and bauxite particles after granulation are treated by microwave pyrolysis;Residual solid after pyrolysis is pyrolysis carbon;After collecting gas generated in the process of pyrolysis, condensation is obtained, and incondensable pyrolysis gas and liquid pyrolysis oil are obtained;The present application utilizes bauxite as catalyst and converts waste and old textile into valuable oil, gas and carbon, realizes the maximum absorption of bauxite and waste and old textile and resource utilization.The present application has low cost, simple operation, and pyrolysis product can meet some energy utilization, so that bauxite and waste and old textile are resourceized, harmless and reduced, achieve the goal of synergistic effect of pollution reduction and carbon reduction, produce good economic benefit, social benefit and environmental benefit.

This invention discloses a method for solidifying arsenic using copper slag. The method involves adding arsenic-containing substances to copper slag, mixing it thoroughly, adding a sulfuric acid solution with a mass concentration of 10-25%, stirring evenly at room temperature, molding, demolding, and curing to achieve the purpose of solidifying arsenic. This invention utilizes the chemical reaction between copper slag and sulfuric acid solution to harden the material, thereby generating strength. When used as a casting material, it not only has the characteristics of fast setting time, good stability, and good durability, but also has excellent adhesion, realizing the comprehensive utilization of industrial waste.

This invention relates to the technical field of meibomian gland massage, and in particular to an intelligent control method and system for a meibomian gland massager based on AI recognition. The method includes the following steps: acquiring three-dimensional point cloud data of the patient's meibomian gland surface; extracting feature points and constructing their three-dimensional coordinates based on the three-dimensional point cloud data; generating the massage motion trajectory of the massager using an adaptive path planning algorithm based on the three-dimensional coordinates; acquiring image data of the patient's meibomian gland; retrieving massager parameter data from a preset feature database based on the image data; inputting the massager parameter data into a preset control model; outputting the massage time and massage light intensity; and controlling the massager to massage the patient's meibomian glands based on the massage time and massage light intensity. This application has the effect of improving the massage effect on the patient's meibomian glands.

The invention discloses a desulfurization wastewater zero discharge system based on magnetic seed crystal induction and a treatment method, the desulfurization wastewater zero discharge system based on magnetic seed crystal induction comprises a premixing module, an atomization module, a magnetic separation module and a regeneration module, the premixing module is used for mixing and conveying slurry, the atomization module is connected with the premixing module and located at the downstream of the premixing module, the atomization module is used for atomizing slurry, the magnetic separation module is connected with the atomization module and located at the downstream of the atomization module, the magnetic separation module is used for capturing and separating magnetic particles, the regeneration module is connected between the premixing module and the regeneration module, and the regeneration module is used for recycling magnetic seed crystals. According to the desulfurization wastewater zero discharge system based on magnetic seed crystal induction disclosed by the invention, a cured product is physically isolated from boiler fly ash while wastewater salt is efficiently cured in flue gas, so that zero discharge of desulfurization wastewater is realized, additional evaporative crystallization equipment is not needed, the magnetic seed crystal can be recycled, and the operation cost is reduced.

This invention relates to the field of marine engineering material preparation technology, and particularly to an eco-friendly marine engineering material and its preparation method. The preparation method includes: leaching waste concrete fine powder with ammonium chloride solution to dissolve calcium ions, separating the calcium ion solution and the leachated waste concrete fine powder; mixing waste concrete aggregate, sea sand, and the leachated waste concrete fine powder to prepare a porous framework; mixing urea, reactive bacteria, calcium ion solution, and seawater to obtain a reaction solution; the reactive bacteria include urease hydrolyzing bacteria and carbonic anhydrase bacteria; injecting the reaction solution into the porous framework, and mineralizing the porous framework in a carbon dioxide gas environment to obtain the eco-friendly marine engineering material. This invention breaks through the dependence of traditional cementitious materials on cement, achieving the synergistic development of construction solid waste resource utilization and green marine engineering.

The utility model discloses a collapsible loess area slope surface drainage protection structure, including the drainage open ditch who lays along the length direction of slope foot, a plurality of slope surface drainage ditch who lays along the height direction of slope surface and set between two adjacent slope surface drainage ditch's layered protection structure, and new loess layer protection unit includes the anchoring frame group who lays on new loess layer and the geotextile that covers on anchoring frame group, and anchoring frame group is assembled by a plurality of for accommodating soil solidifying agent's anchoring frame, and anchoring frame includes frame, the first mesh of surrounding cloth in frame periphery and the hollow grouting anchor rod of setting on frame. The utility model adopts different protection measures to different layers, forms three -dimensional protection result, and the new loess layer is protected in block through anchoring frame group, adopts hollow grouting anchor rod and tightly links as a whole with old loess layer to new loess layer, fills soil solidifying agent in anchoring frame, and overall adaptation collapsible loess area protection demand and loess area gale environment.

This invention relates to a multifunctional bioactive dental bulk filling composite resin and its preparation method. The composite resin comprises an organic resin matrix and an inorganic filler; the organic resin matrix comprises polymerizable resin monomers and a photoinitiator system, the polymerizable resin monomers comprising dimethacrylate monomers and E-POSS; the inorganic filler comprises nMgO and sSiO2 with a silanized surface. The preparation method includes the following steps: preparing nMgO powder using a sol-gel method combined with a gradient calcination process; preparing submicron-sized sSiO2 using the Stöber method and subjecting it to surface silanization treatment to obtain silanized sSiO2; mixing the polymerizable resin monomers, E-POSS, and the photoinitiator system, stirring in the dark until a homogeneous resin matrix is ​​formed; adding the obtained nMgO and silanized sSiO2 to the resin matrix in a specific ratio and mixing and dispersing evenly to obtain an uncured paste-like composite resin.

The application discloses a kind of based on acidification-thermal activation's red mud base salt excitation cementitious material and its preparation method and application, belong to solid waste base cementitious material technical field.The red mud base salt excitation cementitious material provided by the application includes 98~99% red mud-solid waste gypsum complex, 0.2~0.5% water reducing agent and 0.5~1.8% early strength agent by mass fraction;Red mud-solid waste gypsum complex is prepared by thermal activation of acidified red mud and solid waste gypsum with mass ratio of (8~10):1, and the acidified red mud is obtained by neutralizing composite dealkalizer and Bayer red mud;Composite dealkalizer includes 60~70% carboxylic acid component and 30~40% sulfonic acid component.The utilization rate of Bayer red mud is as high as 85% or more, solving the problem of low utilization rate of Bayer red mud in the prior art;At the same time, the obtained cementitious material has good early strength and late strength, and the performance is equivalent to or even better than the existing cement mortar.

The present application relates to the field of coating technology, in particular to a waterproof putty powder and a preparation method thereof. The waterproof putty powder comprises heavy calcium carbonate, quartz powder, Portland cement, calcium hydroxide, hydroxyethyl cellulose ether, hydrophilic fumed silica, hydrophobic fumed silica and a specific redispersible polymer powder. The polymer powder is prepared by spray drying of ethylene-vinyl acetate copolymer dispersion, polyvinyl alcohol, silane coupling agent, triethylamine and colloidal silica. The preparation method of the present application comprises first preparing the modified polymer powder, and then mixing it with the remaining dry powder components in steps. The construction method involves mixing with acidic water, standing for curing, and then scraping in two batches. Through the design of the core-shell structure of the polymer powder and the sequential addition of functional components, the waterproofness, workability, flexibility and bonding strength after immersion of the putty layer are synergistically improved.

The invention discloses a grouting reinforcement method for a karst area. The grouting reinforcement method comprises the following steps that S1, karst detection is conducted; in combination with early-stage geological data, an elastic wave CT (Computed Tomography) method and a borehole television imaging method are used for carrying out geological supplementary investigation, and the position distribution, the range size, the filling condition and the water-endowed state of the karst cave are determined; s2, defining a processing range; according to a detection result and engineering geological conditions, defining a karst treatment range; s3, grouting reinforcement construction is conducted, specifically, reinforcement is conducted by combining a filling method and a grouting method according to the geological conditions of the tunnel body engineering, the surrounding environment and the construction technology; s4, quality acceptance: arranging inspection holes according to 5-10% of the total grouting holes, and completing grouting reinforcement construction after all the grouting holes meet the end standard and the inspection holes meet the design requirements; the karst area grouting reinforcement method can be suitable for grouting reinforcement of multiple types of karst areas, slurry is evenly diffused during reinforcement, and the bearing capacity and stability of a foundation are improved.

The invention discloses a process for high-temperature harmless treatment of overhaul slag. The aluminum electrolysis overhaul slag is crushed and mixed with sodium carbonate and calcium carbonate, the sodium carbonate reacts with the overhaul slag at the high temperature to convert a fluorine-containing compound into soluble fluoride, meanwhile, the calcium carbonate is mixed at the high temperature, the soluble fluoride is converted into CaF2, and the fluorine curing effect is achieved. The method can effectively solve the problem of safe disposal of dangerous waste residues generated by electrolytic aluminum, so that the dangerous waste residues meet the environmental protection requirement, and the purpose of comprehensive and harmless treatment of the electrolytic aluminum overhaul waste residues is achieved.

The application provides a method for self-activated grading feeding reinforced heavy metal solidification of lithium residue and red mud and a solidified and formed material. The method comprises the following steps: uniformly mixing solid raw materials with lithium residue to obtain a composite powder; dividing the composite powder into a first composite powder and a second composite powder; performing primary feeding by using the first composite powder and a first liquid raw material, and stirring to obtain a mixed slurry; continuously stirring the mixed slurry until the viscosity of the mixed slurry is greater than or equal to 10 5 mPa·s, performing secondary feeding by using the second composite powder and a second liquid raw material, and maintaining the stirring state; pouring the obtained product into a mold, performing vibration degassing, sealing, temperature rising curing and demolding to obtain the solidified and formed material, and completing the solidification of the heavy metal. The method provided by the application can realize the synchronous solidification and stabilization of the lithium residue and the red mud by using the grading feeding mode and the alkali activation effect of the red mud, and does not need to additionally add alkali, thereby providing a harmless method for the lithium residue.

This invention relates to the field of metal composite sheet production, specifically to a metal composite sheet production equipment, including a feeding rack, a feeding guide mechanism, a panel forming roller conveyor mechanism, a corrugated forming mechanism, an automatic gluing mechanism, a mobile composite mechanism, a PU curing and laminating mechanism, an automatic circulating heating mechanism, a flying saw automatic shearing mechanism, and a finished product support mechanism. It also relates to a metal composite sheet production process utilizing the above equipment, including steps S1 (feeding), S2 (feeding guide and forming), S3 (automatic gluing), S4 (composite and laminating curing), S5 (length shearing), and S6 (discharging). The metal composite sheet production equipment of this invention can achieve efficient curing of the adhesive within a relatively low temperature range of 30℃-55℃, significantly reducing production energy consumption compared to high-temperature curing methods in the prior art. Simultaneously, residual air bubbles between layers are squeezed out during the lamination process, ensuring full cross-linking and curing of the adhesive layers, achieving high-quality composite under low-temperature conditions.

The application provides a kind of full solid waste roadbed cushion material and preparation method thereof, by breaking and screening coal-fired slag, the first slag, the second slag and the third slag are divided according to different particle size range, then the mixed slurry is obtained by wet grinding after mixing phosphogypsum, steel slag powder and lead-zinc tailings powder according to the preset weight fraction; then the required quicklime, the first slag, the second slag and the third slag are weighed according to the preset weight fraction, and the water reducing agent, the mixed slurry and the water are fully stirred after pre-stirring, to obtain the full solid waste roadbed cushion material. Through the above-mentioned mode, the synergistic effect between the raw materials can be effectively utilized, the formation of hydration products is promoted, and the heavy metal ions are effectively solidified, so that the cheap and difficult-to-handle solid waste material is prepared into the full solid waste roadbed cushion material with good mechanical properties and high stability, which has high economic and environmental benefits.

The invention relates to the technical field of industrial solid waste resource utilization and carbon emission reduction technology crossing, in particular to a resource utilization system and method for red mud large-scale synergistic curing of low-purity CO2, and the system comprises a red mud pretreatment unit, a gas-liquid reaction unit, a product separation and modification unit, a resource recovery unit and an intelligent regulation and control unit. Through integrated unit design, full-process efficient cooperation of red mud treatment and CO2 curing is achieved, the red mud pretreatment unit adopts closed conveying and accurate online monitoring, the uniformity and stability of raw material slurry are guaranteed, the system can directly treat CO2 mixed gas (with the purity being 25%-35%) from an industrial kiln and other sources, expensive purification pretreatment is not needed, and the system is suitable for large-scale industrial production. Wherein trace SO2, NOX and other components can promote dissolution of alkaline substances in the red mud on the contrary, a synergistic enhancement effect of treating waste with waste is formed, and the comprehensive cost of carbon capture and solidification is reduced.

This invention relates to the field of photopolymerization materials technology, and more particularly to a low-migration, oxygen-resistant photoinitiator, its preparation method, and applications, applicable to environmentally friendly coatings, 3D printing resins, and biomedical adhesives. The nano-photoinitiator of this invention is prepared from a trivalent iron salt compound and an organic ligand containing a carboxylic acid group; it generates initiating free radicals under ultraviolet and / or visible light irradiation, which are used to initiate the free radical polymerization reaction of unsaturated monomers. The system of this invention can still achieve rapid and complete curing in an air environment, significantly reducing or avoiding the oxygen inhibition effect commonly found in traditional free radical photocuring, and exhibits high stability; simultaneously, it has advantages such as wide availability of raw materials, low cost, easy aqueous phase conversion, and reduced potential irritation and migration risks, thus improving the system's biocompatibility and environmental friendliness.