61results about How to "Optimize process flow" patented technology

The invention discloses a wire cutting machine for screw production. The wire cutting machine comprises a base, a feeding cutting device arranged at one end of the base and a cold heading device arranged at the other end of the base. The feeding and cutting device comprises a cutting base, and the cutting base is provided with a straightening groove position and a forming positioning hole. The cutting seat is provided with a material pushing mechanism on one side of the straightening slot position; the pushing mechanism is provided with a pushing shaft which is arranged in the forming positioning hole in a sliding mode. The cutting base is provided with a cutting assembly. A straightening device is arranged at the position, corresponding to the straightening groove position, of the base; the straightening device is provided with a straightening channel; the straightening device is in one-way transmission connection with the pushing mechanism; a material moving mechanism is arranged at the position, corresponding to the straightening channel, of the base; continuous production of screws is achieved, so that the production efficiency is improved, the coordination time of cutting and cold heading is effectively shortened, and the consistency of products is better.

The invention provides a composite sodium supplementing agent, a sodium-ion battery positive plate and a preparation method of the sodium-ion battery positive plate, and relates to the technical field of sodium-ion batteries. The composite sodium supplement provided by the invention comprises the following components in percentage by mass: 10%-30% of an alkaline sodium supplement and 70%-90% of acidic sodium salt. The acidic sodium salt and the alkaline sodium supplementing agent are compounded according to a certain proportion, the alkaline sodium supplementing agent is used for providing sufficient sodium ions, the acidic sodium salt neutralizes the alkalinity of the positive electrode slurry, oxalic acid does not need to be additionally added to adjust the pH value when the positive electrode slurry is prepared, the technological process of positive electrode preparation is optimized, meanwhile, the situation that an electrode cannot be prepared due to a gel phenomenon is avoided, and the service life of the electrode is prolonged. And the first coulombic efficiency and the cycling stability of the sodium ion battery can be effectively improved.

The invention discloses a steel skeleton reinforced nylon pipeline prefabricating and forming mechanism and a quality control method, and relates to the field of nylon pipelines, and the steel skeleton reinforced nylon pipeline prefabricating and forming mechanism comprises a pipeline pouring cavity used for pouring after nylon hot melting; the exterior of the steel skeleton fixing cylinder is covered with the formed net-shaped steel skeleton; the driving assembly is fixed to the inner wall of the steel framework fixing cylinder in an inserted mode and used for driving the steel framework fixing cylinder to move left and right, the driving assembly comprises a fixing plate fixed to the end of the pipeline pouring cavity, and a base is fixed to the fixing plate and the bottom of the pipeline pouring cavity; the replacing and adjusting assembly is located on one side of the driving assembly and used for replacing the steel framework fixing cylinders with different inner diameters, the replacing and adjusting assembly comprises a rotating seat, the rotating seat is fixed to the side face of the base, a plurality of placing plates are rotationally connected to the interior of the rotating seat, and the steel framework fixing cylinders with the different inner diameters are placed on the placing plates; the embedded depth of the steel skeleton net in the nylon pipeline can be conveniently controlled, and meanwhile the enhanced film thickness of the inner wall film of the pipeline can be controlled.

The invention relates to the field of comprehensive recycling of underground brine, and particularly discloses a low-concentration lithium and boron comprehensive extraction process based on gravel-type underground brine, which comprises the following steps: S1, evaporating and concentrating the gravel-type underground brine to obtain concentrated brine; s2, the concentrated brine is subjected to dynamic adsorption through an adsorption column filled with a lithium adsorbent, lithium extraction tail liquid is obtained, then the adsorbent is desorbed, and lithium desorption liquid is obtained; s3, carrying out nanofiltration reverse osmosis on the lithium desorption solution to obtain a lithium enrichment solution; s4, the lithium extraction tail liquid is subjected to dynamic adsorption through an adsorption column filled with a boron adsorbent, boron extraction tail liquid is obtained, then the adsorbent is desorbed, and boron desorption liquid is obtained; and S5, evaporating and concentrating the boron desorption solution, and cooling to separate out a boric acid product.

The invention provides a packaging method of an SIM card packaging structure, the SIM card packaging structure comprises a strip, a plurality of SIM cards and a conductive film connecting the strip and the SIM cards, the SIM cards are DFN packaging chips, and the packaging method comprises the following steps: step 1, SMT is performed on the DFN packaging chips to the strip bonded with the conductive film; and 2, carrying out FT test to obtain the SIM card packaging structure. According to the technical scheme, the novel SIM card is formed by packaging the SIM card through the DFN packaging technology, the novel SIM card is the DFN packaging chip, the DFN packaging chip is attached to the strip through the SMT technology, and finally FT testing is carried out, the technological process is optimized, the number of procedures is reduced from existing four procedures to two procedures, material and equipment investment is reduced, production efficiency is improved by 150%, cost is reduced, and development is facilitated.

The lead-zinc ore flotation method comprises the following steps that raw ore is ground to be fine, after a sulfur inhibitor, a zinc inhibitor, a lead collecting agent, a lead flocculating agent and a foaming agent are sequentially added, lead concentrate is obtained through flotation, after the sulfur inhibitor, a zinc activating agent, the zinc collecting agent and the foaming agent are sequentially added into lead flotation tailings, the lead concentrate is obtained through flotation; and zinc concentrate is obtained through flotation. According to the method, the technological process is simple and convenient, industrial production is easy, the adaptability to ore grinding products containing the micro-fine-particle galena is high, the flotation recovery rate of the micro-fine-particle galena can be increased, the quality of zinc concentrate is guaranteed, and better lead-zinc flotation indexes are obtained.

This invention discloses a method for preparing aviation fuel with different functional components based on the directional dismantling of organic waste molecular structure, belonging to the field of organic waste recycling. The method uses waste plastics, waste rubber, and waste oils as raw materials, employing a vertically connected two-stage reactor. Multiple types of mixed organic waste are co-pyrolyzed in the first-stage reactor, and the pyrolysis volatilization products directly enter the second-stage reactor for gaseous catalytic hydrogenation, ultimately yielding a mixed aviation liquid fuel containing different functional components. This method utilizes the molecular structure of organic waste itself to prepare liquid fuel products such as isoalkanes and aromatics, replacing the isomerization and aromatization reactions in existing catalytic processes. It has advantages such as a simple process flow and simple catalytic reaction, and can quantitatively prepare mixed aviation fuel composed of two or more functional components from n-alkanes, isoalkanes, aromatics, and cycloalkanes according to actual applications.

The application discloses a kind of two-dimensional organic material based on porphyrin unit and its preparation method and application, the two-dimensional organic material is formed by the supramolecular interaction of protonated 5,10,15,20-tetra (4-aminophenyl) porphyrin and pyromellitic acid self-assembly.It does not need to add surfactant in its preparation process, only by reducing the precursor concentration and appropriately increasing the pH value of pure water phase regulation, by low concentration limited self-assembly, directly obtain the dispersion stable two-dimensional ultrathin nanosheet.The material takes porphyrin unit as light active center and specific adsorption site, in the complex composition of electronic waste leaching solution, without additional electron sacrificial agent, by material itself consumption photogenerated hole, under visible light driving, complete the selective enrichment and in-situ reduction of tetrachloroaurate anion, generate elemental gold.The application process is simple and environmental protection, with good application prospect.

The invention belongs to the field of preparation of medical materials, and particularly relates to a preparation method of medical-grade high-purity lithium carbonate, which comprises the following steps: carrying out replacement reaction on metal lithium and deionized water to prepare a lithium hydroxide solution; introducing carbon dioxide gas into the lithium hydroxide solution, carrying out carbonization treatment, controlling the pH at the end point of the carbonization reaction to be 8-10.5, and then carrying out solid-liquid separation treatment to obtain a lithium bicarbonate solution; carrying out heat preservation treatment on the lithium bicarbonate solution at the temperature T and the pressure P, and separating to obtain pharmaceutical-grade high-purity lithium carbonate; the temperature T ranges from 90 DEG C to 98 DEG C, and the P ranges from 0.01 Mpa to 0.09 Mpa. According to the method, lithium carbonate is synthesized by utilizing a reaction mechanism of replacement-carbonization and thermal insulation transformation treatment, and on the basis, the combination of the pH value of carbonization and the temperature T and pressure P of thermal insulation treatment is further matched, so that the nucleation behavior of lithium carbonate can be accidentally controlled, the nucleation wrapping of impurities is reduced, and the purity of lithium carbonate is improved. Therefore, lithium carbonate which meets medical application requirements and has excellent particle size uniformity can be prepared with high direct yield based on a simple means.

The application provides a flash memory device and a manufacturing method thereof. After removing a hard mask layer, a floating gate material layer is etched to form a floating gate under a first sidewall and form a floating gate tip at the top of the sidewall of the floating gate away from a source line. The application optimizes the process flow of the flash memory device, cancels the etching step of the floating gate material layer before the forming step of the first sidewall, and forms the floating gate tip at the top of the sidewall of the floating gate away from the source line, which reduces the influence of the thickness variation of the floating gate on the sharpness of the floating gate tip and facilitates the further size reduction of the flash memory device. Further, the application exposes the floating gate tip by shortening the thickness of the first sidewall, which optimizes the erasing effect of the flash memory device.

The invention discloses a construction method for integration of an anti-static floor and a cable support of a secondary equipment room of a transformer substation, and relates to the field of transformer substation constructional engineering and electrical installation. Traditional construction has the problems of long construction period, different quality, poor operation environment and inconvenience in later debugging. The method comprises the following steps: measuring and typesetting on site, and setting an elevation control line and a division positioning line in an elastic manner; cleaning the terrace and laying a grounding cable led out from the main grounding grid in advance; the cable support is positioned and assembled according to the grid division positioning lines, the cable support is reliably connected with the grounding cable, and a groove box cross arm of the cable support is used for bearing the cable; and after the cable is laid, an anti-static floor is installed at the top of the cable support, and edge closing treatment is carried out. According to the method, on-site efficient assembly is achieved through the standardized and modularized construction process, the construction period is shortened, the quality is improved, and the operation and debugging environment is optimized.

This invention relates to a method for preparing a core-shell structured Al-Zn@Al2O3 composite phase change thermal storage material, belonging to the technical field of medium- and high-temperature phase change thermal storage materials. This invention involves adding an aluminum powder suspension to an HCl solution and stirring at 45–65°C for 5–10 minutes. Gelatin is then added, and the mixture is reacted at 45–65°C with stirring for 10–20 minutes to obtain solution A. NH4F solution is slowly added to solution A at 40–60°C with stirring, and the reaction continues for 30–60 minutes. A mixture of zinc sulfate solution and ethylenediaminetetraacetic acid is then added, and the mixture is reacted for 3–5 hours. After standing, the solid and liquid are separated. The solid is washed 3–5 times alternately with anhydrous ethanol-water-anhydrous ethanol and dried to obtain solid B. Under a protective atmosphere, solid B is uniformly heated to 600–660°C and calcined at high temperature for 2–4 hours to obtain aluminum-zinc alloy powder. Under an air atmosphere, the aluminum-zinc alloy powder is uniformly heated to ~800°C and calcined at high temperature for 1–4 hours to obtain a core-shell structured Al-Zn@Al2O3 high-temperature phase change heat storage material.

The utility model discloses a kind of pre-coating forming structures of LNG storage tank inner wall stamping corrugated board, it is related to liquefied natural gas storage tank inner wall metal shielding layer manufacturing technical field, the utility model is provided with coating device, and in coating device, adopt Bernoulli chuck adsorption leveling protective film, utilize non-contact negative pressure principle, ensure that protective film is evenly stressed, smooth in the process of gluing, with the glue transfer in the continuous rotation process of annular gluing tape, can realize the even, quantitative coating of glue on protective film, significantly improve the stability and consistency of coating quality, can be before metal corrugated board base material stamping forming, beforehand on its upper and lower surface accurately and stably stick protective film, form physical isolation layer, to fundamentally avoid the generation of friction mark, indentation, scratch and microcrack etc. Defects, greatly guarantee the original cleanliness and integrity of plate surface.

The invention relates to the technical field of building materials, and discloses artificial coarse aggregate and a preparation method thereof. The artificial coarse aggregate is prepared from the following raw materials in parts by weight: 100 parts of sea sand; 12 to 20 parts of a binder; 0.06 to 0.18 part of a coalescing agent; 12 to 20 parts of water; wherein the binder is an acrylate copolymer emulsion with the solid content of 50%, and the coalescing agent is propylene glycol monobutyl ether. The preparation method comprises the steps of raw material pretreatment and mixing, adhesive solution preparation, rolling agglomeration granulation, curing maintenance, screening and the like. By controlling the particle size grading of the sea sand, the use amount of the binder and process parameters, the prepared artificial coarse aggregate is in an irregular polygonal form, has a rough and porous surface, has proper bulk density, cylinder compressive strength and water absorption, and can meet the use requirements of C25-C35 grade lightweight concrete. According to the method, efficient utilization of sea sand resources is achieved, the process is simple, energy consumption is low, and the method has good engineering application prospects.

This invention discloses a high-performance corrosion-resistant non-magnetic stainless steel and its preparation method, belonging to the technical field of stainless steel materials. It solves the problems of existing non-magnetic stainless steels where the mechanical properties and corrosion resistance cannot be simultaneously and effectively improved, and the microstructure uniformity is poor. The high-performance corrosion-resistant non-magnetic stainless steel comprises, by mass percentage: 18.30% ≤ Cr < 21.00%, 2.60% ≤ Mo ≤ 3.00%, 4.10% ≤ Ni ≤ 4.50%, 20.50% < Mn ≤ 22.00%, Si ≤ 0.4%, 0.015% < Nb ≤ 0.03%, P ≤ 0.025%, S ≤ 0.01%, C ≤ 0.02%, 0.80% < N ≤ 0.85%, with the balance being Fe and other unavoidable impurities. The high-performance corrosion-resistant non-magnetic stainless steel of this invention has fine and uniform grains, and excellent mechanical properties and stress corrosion resistance.

The invention belongs to the technical field of soil remediation, and discloses a device and method for microwave remediation of polycyclic aromatic hydrocarbon in transformer substation soil, and the method comprises the step that a mixture of the transformer substation soil to be remediated and an oxidizing agent is treated for 30-60 min under 250-1000 W microwaves. The device comprises a microwave generation system, a tuner and a quartz reactor, the microwave generation system comprises a microwave generator and a circulator which are connected, the circulator is connected with a tuner, and the tuner is connected with the quartz reactor. According to the method, the mixture of the transformer substation soil to be remediated and the oxidizing agent is treated under microwaves, modification of the soil polluted by the polycyclic aromatic hydrocarbon is achieved, compared with a pollutant treatment function of a traditional method, harmlessness of pollutants can be achieved, different pollutants in the soil can be removed at the same time, the process is simple, and the method is suitable for large-scale popularization and application. The number of devices is reduced, and the land area is effectively saved.

The utility model relates to a kind of non-excavation light curing repair hose manufacturing technical field, specifically to a kind of light curing hose forming machine. Including the conveying assembly for pushing multiple layers of flat cloth, the cloth folding assembly for the layering folding of multiple layers of flat cloth, cloth folding assembly is located above conveying assembly, cloth folding assembly is fixedly connected with conveying assembly. The utility model is sequentially arranged in conveying direction by multiple cloth folding units (each unit corresponds a layer of cloth), realizes the continuous, sequential folding (from top to bottom) of multiple layers of flat cloth, avoids the low-efficiency problem of traditional manual or single-layer processing, significantly improves production efficiency, and can handle multiple-layered structure simultaneously, facilitating subsequent sewing into hose. Conveying assembly promotes cloth movement, and cloth folding assembly automatically completes folding, without interrupting the process, reducing manual intervention.

The invention provides a clay type lithium ore external field enhanced resource comprehensive utilization method, and relates to the field of hydrometallurgy. The method comprises the following steps: uniformly mixing clay type lithium ore with concentrated sulfuric acid, and carrying out low-temperature curing to obtain clinker; mixing the clinker with water, and then carrying out leaching reaction to obtain a lithium-rich aluminum leaching solution; carrying out evaporative crystallization on the lithium-rich aluminum leachate to obtain a mixed crystal of lithium sulfate and aluminum sulfate; performing high-temperature pyrolysis reaction on the mixed crystal to obtain an oxide; carrying out high-energy grinding and leaching on the oxide, and filtering to obtain a lithium-containing solution and crude aluminum oxide; and carrying out post-treatment on the lithium-containing solution to obtain the battery-grade lithium carbonate. According to the method, the technological process of the clay type lithium ore is optimized, synchronous leaching of valuable elements lithium and aluminum and efficient separation of the lithium element and the aluminum element are achieved, the problem that the cost is high when lithium is independently extracted is solved, cooperative utilization of clay type lithium ore resources is achieved, and the cost is reduced.

The invention discloses a nano porous nickel electrocatalyst material as well as a preparation method and application thereof. Belongs to the technical field of electrolyzed water hydrogen production catalysts. According to the method, a nickel net substrate is subjected to pretreatment, electrogalvanizing, high-temperature alloying and chemical dealloying, and finally the nano-porous nickel electrocatalyst material growing on the nickel net is obtained. The electrocatalyst material prepared by the method has a uniform three-dimensional nano porous structure, the thickness of a porous layer is 10-70 [mu] m, and the aperture is 100-500 nm. As an alkaline electrolytic water hydrogen evolution reaction cathode catalyst, the material has high specific surface area and rich active sites, and shows lower overpotential and excellent long-term stability. The method is simple in technological process, raw materials are easy to obtain, and the method has large-scale production potential and has wide application prospects in the field of hydrogen production through water electrolysis.

The utility model discloses a tire, a traveling wheel and a mowing robot, relates to the technical field of mowing robots, and aims to solve the problems of weak road holding force and unstable operation of the traveling wheel of the mowing robot in the related technology. The tire comprises a tire body and at least two bulge groups, wherein the tire body is provided with a tread; the plurality of bulge groups are arranged on the tread along the axis direction of the tire body, and each bulge group comprises a plurality of bulges arranged along the circumferential direction of the tire body; the tread comprises a first ring surface, a transition ring surface and a second ring surface which are sequentially connected in the axis direction of the tire body, and the side, close to the transition ring surface, of the first ring surface is higher than the other side, away from the transition ring surface, of the first ring surface; the side, close to the transition ring face, of the second ring face is higher than the other side, away from the transition ring face, of the second ring face.

The utility model relates to chemical industry process tail gas recovery technical field, concretely relates to a kind of pressure swing adsorption tail gas recycling system and propane dehydrogenation device, including the clean gas compressor, pressure swing adsorption unit, tail gas compressor and tail gas utilization unit sequentially communicated by main pipeline, still include circulation pipeline, its inlet end is connected in the outlet side main pipeline of the tail gas compressor, its outlet end is connected in the inlet side main pipeline of the clean gas compressor;The circulation pipeline is used to send the tail gas discharged from the pressure swing adsorption unit to the inlet of the clean gas compressor, and is combined with raw material gas leading to the clean gas compressor;The utility model can effectively improve hydrogen recovery rate, reduce tail gas emission and reduce external resource consumption.

The present invention relates to a method for manufacturing a zirconium alloy tubular product that can be used as a water-cooled nuclear reactor housing product. A method for manufacturing a tubular product from a zirconium alloy, which contains a mass percentage of: niobium 0.9-1.7; iron 0.10-0.20; oxygen 0.10-0.20; silicon less than 0.02, carbon less than 0.02, and a basis of zirconium alloy. The method includes melting an ingot by repeated vacuum arc remelting, machining the ingot, heating, hot multi-stage forging to obtain a forging, and heat treating the forging. The method also includes subsequently machining the forging to obtain a tube blank and performing vacuum heat treatment, applying a protective coating to it and heating it to a hot pressing temperature, hot pressing, removing the protective coating, and vacuum heat treatment. The method also includes multiple cold rolling, each rolling with a total deformation of 58-74%, a tube coefficient Q=1.18-2.01, and performing intermediate vacuum heat treatment to produce a tubular product. The final vacuum heat treatment is performed at the final size, followed by a finishing operation. The technical result is improved processing properties of materials used to manufacture piping products at various stages of hot and cold press processing, as well as high corrosion resistance of piping products with stable mechanical properties and resistance to shape changes.

The invention relates to the field of ceramic blank pulling control, in particular to an intelligent ceramic blank pulling and a control system thereof, which comprises the following steps: acquiring ceramic blank pulling data information and transmitting the information to a central control unit, classifying pug according to the plasticity of the pug, setting blank pulling pressure, and calculating the difficulty degree of the blank pulling process according to the shape requirement of a ceramic product; calculating a clay supplement frequency regulation coefficient according to the difficulty degree of the blank pulling process, and regulating the clay supplement frequency; according to the blank pulling temperature and the movement condition of the mechanical arm, the blank pulling pressure regulation and control coefficient is calculated, and the pressure of the blank pulling machine is regulated and controlled; establishing a throwing energy consumption evaluation neural network model according to the adjusted throwing pressure and the adjusted clay supplement frequency, and obtaining a throwing energy consumption result; and after blank pulling is completed, the sensor on the blank pulling disc detects the blank again, a ceramic blank detection model is established, and adjustment is conducted according to feedback information.

This utility model provides a sealed discharge and precision filtration integrated plate and frame filter press, belonging to the field of solid-liquid separation technology. It includes a sleeve with one open end, with the plate and frame filter press vertically placed inside the sleeve. The drive unit of the plate and frame filter press is located at the end of the sleeve away from the open end. The feed inlet of the plate and frame filter press is located at the open end of the sleeve and connected to the feed pipe. A double-layer space is provided in the side wall of the sleeve. The liquid outlet of the plate and frame filter press is connected to the double-layer space through a pipe. A discharge pipe is also connected to the sleeve, with one end connected to the double-layer space inside the sleeve for discharging and guiding the filtered liquid. This utility model can filter liquid in a sealed manner, preventing contamination from dust or impurities in the working environment during processing, thus ensuring that product quality is not affected.

The invention discloses a multifunctional modularized automobile independent suspension cross beam positioning system and method.The system comprises a cross beam clamp main body structure, a cross beam clamp main body structure and a cross beam clamp main body structure, the cross beam clamp main body structure comprises a bearing structure and a bottom plate structure, and a positioning mechanism and a clamping mechanism are arranged on the bottom plate structure; the positioning mechanism comprises a plurality of positioning subassemblies and is used for accurately positioning the suspension cross beam and related parts of the suspension cross beam and ensuring that the deviation of the welded parts is within the range of design requirements; the clamping mechanism comprises a plurality of clamping assemblies and clamping devices and is used for fixing the suspension cross beam and related parts thereof in the welding process; the supporting modules comprise the first supporting module, the second supporting module and the third supporting module which are symmetrically distributed on the two sides of the clamping mechanism and used for supporting and limiting a suspension cross beam front / rear connecting plate and a suspension lower triangular arm mounting beam, and collapse caused by welding deformation in the welding process is prevented; and the independent positioning assistive device is used for independently positioning the local small parts.

This invention provides a composition for replenishing qi and blood and regulating endocrine function in women, and its preparation method, relating to the field of composition technology. The composition of this invention, by weight, comprises: 10-20 parts active peptides, 10-20 parts extracts, 1-3 parts fruit and vegetable powders, 0.8-1.5 parts protectant, and 3-5 parts excipients. The active peptides include active peptide a and active peptide b in a mass ratio of (8-15):(3.5-7). Active peptide a comprises: 3-5 parts fish collagen peptides, 1-3 parts black-boned chicken peptides, 3-5 parts small molecule active peptides from fish maw, and 1-2 parts corn oligomeric peptides; active peptide b comprises: 2-4 parts collagen cyclic dipeptide powder, 1-2 parts elastin peptide powder, and 0.5-1 part donkey-hide gelatin peptide powder. The composition of this invention nourishes the liver and kidneys, invigorates qi and blood, regulates the body and mind, and rejuvenates the complexion. It also synergistically regulates female physiological functions through multiple targets, improves the microenvironment of the uterus and ovaries, and, without the presence of exogenous hormones, helps improve menstrual disorders and endocrine imbalances, improves ovarian function, and alleviates the discomfort symptoms caused by premature ovarian failure.

The utility model provides a device of adding anti -caking agent before static atomization coupling type fluidized bed in potassium chloride production, including vibration feeder and static atomizer, and vibration feeder includes feeder body, is provided with vibration motor on feeder body, and feeder body is connected with support frame through composite damping system, still be provided with opening on feeder body, and static atomizer includes the multi -hole nozzle corresponding to the opening setting. According to the device of adding anti -caking agent before static atomization coupling type fluidized bed in potassium chloride production of the utility model, not only can the anti -caking agent be evenly sprayed on the salt particle surface, but also can ensure that the salt particle is fully loose in the conveying process, and further improve the uniform distribution effect of anti -caking agent addition.

The invention discloses a surface acoustic wave filter and a preparation method thereof, the surface acoustic wave filter comprises a substrate, two first interdigital electrodes, a plurality of second interdigital electrodes, an input transducer and an output transducer, the two first interdigital electrodes are symmetrically arranged on the substrate, the middle part of each first interdigital electrode is provided with a first lead-out part, and the middle part of each second interdigital electrode is provided with a second lead-out part; the substrate is provided with a deep hole matched with the bottom end of the first lead-out part in shape, and a metal coating is arranged between the first lead-out part and the deep hole. The surface acoustic wave filter designed by the invention has relatively high antistatic capacity, and can be prepared by process means such as evaporation, etching and metal filling, so that the manufacturing cost is reduced.

This disclosure provides a seawater uranium extraction composite adsorbent material, its preparation method, and its application. The preparation method of the seawater uranium extraction composite adsorbent material includes: coating a pretreated polymer film with a coating liquid to obtain a modified polymer film; and post-treating the modified polymer film to obtain the seawater uranium extraction composite adsorbent material. The coating liquid includes a metallo-oxime-based material, a hydrophilic polymer material, a plasticizer, a crosslinking agent, and a pore-forming agent.

This invention discloses a closed-loop recycling process for potassium extraction and silver leaching from sintering mill head ash, belonging to the field of metallurgical solid waste resource utilization technology. The process includes a water leaching separation step to dissolve potassium and sodium salts from the sintering mill head ash, followed by solid-liquid separation to obtain a leachate and silver-rich ash slag; a triple-effect evaporation or MVR potassium extraction step to evaporate and crystallize the leachate, separating KCl and NaCl products and preparing a high-chloride brine of a certain concentration; and a high-chloride brine silver leaching step utilizing high-Cl... ‑ Saltwater was used directly as the silver leaching medium. Hydrochloric acid and an oxidizing agent were added to leach silver into the ash residue. The silver was then treated with [AgCl2]. ‑ Dissolution in complex ion form; control of Cl ‑ The silver precipitation step involves cooling and dilution to precipitate AgCl; the precipitated solution is then returned to the washing system, forming a closed loop. This invention utilizes the concentrated brine produced during the potassium extraction process to directly meet the high Cl content requirements of the silver leaching process. ‑ To meet environmental requirements, the recycling of NaCl solution has been achieved, with a single-pass silver leaching rate of ≥90%, a cumulative recovery rate of ≥95%, a NaCl recycling rate of ≥90%, zero wastewater discharge, and an overall operating cost reduction of 15-20%.