247results about How to "Promote oxidation" patented technology

The invention belongs to the technical field of sewage treatment, and discloses an anaerobic ammonia oxidation enhanced denitrification device and method based on an electron mediator type biological carrier and iron oxide. The anaerobic ammonia oxidation enhanced denitrification device comprises a reactor main body, a heat preservation circulating water device, a stirring device, a water inlet pipeline and a water outlet pipeline, anaerobic ammonium oxidation bacteria are contained in the reactor main body, a certain proportion of electron mediator type biological carriers are filled in the reactor, and a proper amount of iron oxide is added; wherein the added high-valence iron oxide can be used as an extracellular electron acceptor of anaerobic ammonium oxidation bacteria, the electron mediator type carrier can be used as a redox mediator, and nitrogen removal of the anaerobic ammonium oxidation system is promoted by strengthening the extracellular electron transfer process of the anaerobic ammonium oxidation bacteria.

The invention discloses a tailing agitation leaching device and process, and belongs to the technical field of tailing leaching. The tailing stirring and leaching device comprises a leaching tank, a rotating shaft is rotationally connected in the leaching tank, the side wall of the rotating shaft is rotationally connected with a stirring rod through a hinge seat, the tailing stirring and leaching device further comprises a smashing assembly, a stirring assembly and a stirring assembly, and the smashing assembly is arranged in the leaching tank and used for smashing tailings in the leaching tank; through rotation of a stirring rod and semispherical blocks, a mixed solution of tailings and a leaching solution is stirred, the tailings and the leaching solution are uniformly mixed, the leaching effect is effectively improved, the three sets of semispherical blocks intermittently collide in the rotating process through the attraction effect of a first magnetic plate and a second magnetic plate, and the leaching effect is effectively improved. And the two extrusion plates are arranged in the leaching liquid, so that tailings which suspend in the leaching liquid and are located between the two extrusion plates are crushed, the leaching liquid can make full contact with tailings particles, then dissolution of metal in the tailings is promoted, and the leaching effect is improved.

The invention discloses a whitening nano-emulsion and a preparation method thereof, and relates to the technical field of cosmetics and skin care products. The whitening nano-emulsion is prepared from the following components in percentage by weight: 2.0 to 10.0 percent of an emulsifying agent, 4.0 to 10.0 percent of an emollient, 3.0 to 8.0 percent of glycerol, 3.0 to 8.0 percent of butanediol, 0.5 to 3.0 percent of nicotinamide, 1.0 to 3.0 percent of a Soulixian extract, 0.5 to 3.0 percent of ascorbyl tetraisopalmitate, 0.3 to 3.0 percent of hydrogenated lecithin, 0.1 to 2.0 percent of hydroxyethyl piperazine ethanesulfonic acid, 0.1 to 1.0 percent of SymSitive1609, 0.03 to 0.5 percent of a mulberry root extract, 0.03 to 1.0 percent of cerium oxide and the balance of water. The toothpaste is prepared from the following components in percentage by weight: 0.05 to 0.5 percent of tocopheryl acetate, 0.03 to 0.3 percent of stearyl glycyrrhetinic acid ester, 0.01 to 0.1 percent of poly gamma-sodium glutamate, 0.03 to 0.2 percent of EDTA (Ethylene Diamine Tetraacetic Acid) disodium, 0.2 to 1.0 percent of preservative, 0.01 to 0.1 percent of aromatic and the balance of water, wherein the total The prepared whitening nano-emulsion can solve the problems of excessive addition, difficult absorption and instability of active ingredients of cosmetics, can inhibit DPPH free radical activity, hydroxyl free radical activity and tyrosinase activity through the synergistic effect of all the components, achieves the effects of resisting oxidation, whitening, removing freckles, brightening skin and the like, and does not cause damage to the skin.

The invention provides a method for deeply extracting vanadium from vanadium-containing steel slag, which comprises the following steps: mixing the vanadium-containing steel slag and an oxygen-containing microbubble ammonium bicarbonate solution, and carrying out mechanochemical ball milling activation to carry out leaching reaction to obtain a vanadium extracting solution. According to the method, advanced oxidation is cooperated with mechanochemical ball milling to activate and strengthen deep extraction of vanadium in the vanadium-containing steel slag, wrapping of substances such as calcium silicate and calcium titanium oxide on a vanadium-containing solid solution phase is destroyed through mechanical activation, and O2 microbubbles in an ammonium bicarbonate medium are promoted to generate active oxygen under excitation of mechanical activation energy; exposure reaction and deep oxidation extraction of a vanadium-containing phase under mild conditions are achieved, the content of V2O5 in tailings after vanadium extraction is smaller than or equal to 0.5%, and the vanadium extraction rate is 83% or above.

The invention discloses a water-based flux cleaning agent for integration, and belongs to the field of semiconductor cleaning agents. The water-based flux cleaning agent is prepared from the following raw materials in percentage by weight: 30-50% of alcohol ether solvent, 1-5% of organic amine, 3-5% of gemini imidazoline corrosion inhibitor and 40-70% of deionized water, wherein the sum of the weight percentages of the raw materials is 100%. According to the water-based flux cleaning agent, the imidazoline corrosion inhibitor is adopted, so that a remarkable cleaning effect on flux residues, soldering paste and fine particles on a semiconductor electronic device is achieved, meanwhile, the brightness of welding spots can be maintained, the surface insulation performance is good, the metal surface of an IPM module can be effectively prevented from being oxidized, and the service life of the IPM module is prolonged. The cleaning agent is especially suitable for cleaning pollutants in the welding process of semiconductor chips, chip type capacitors and circuit substrates.

The invention belongs to the technical field of phosphate fire-resistant oil for electric power, and particularly relates to a method for rapidly evaluating the stability of fire-resistant oil. The preparation method specifically comprises the following steps: dissolving metal salt in water, mixing and stirring, and fully dissolving; adding a carrier, fully mixing, and then evaporating and drying to remove moisture to obtain a metal catalyst with a porous structure; the method comprises the following steps: mixing a metal catalyst, water and triaryl phosphate, adding the mixture into a microwave reactor, carrying out microwave catalysis, continuously introducing oxygen, after the microwave catalysis reaction is finished, cooling, taking out an oil sample, filtering to remove the metal catalyst to obtain a treated oil sample, detecting the acid value and resistivity of the oil sample, and evaluating the stability of the oil sample. By utilizing the high efficiency of microwave catalysis, the evaluation period is greatly shortened, and the working efficiency is improved.

The invention discloses a degradable packaging material and a preparation method thereof, and relates to the technical field of packaging materials. When the degradable packaging material is prepared, firstly, hydroxyl-terminated polylactic acid reacts with 3-chloropropionyl chloride, then reacts with 1, 2-bis (vinyl phosphine) ethane, and finally reacts with 4-mercaptophenylboronic acid to prepare modified polylactic acid; secondly, enabling the halloysite nanotube pretreated by trimethoxy (2-phenethyl) silane to react with 3, 4-dihydroxy benzoic acid, so as to obtain a modified halloysite nanotube; finally, mixing and hot-rolling the modified polylactic acid, the modified halloysite nanotube and cellulose to obtain the degradable packaging material. The degradable packaging material prepared by the preparation method disclosed by the invention has excellent degradability, antibacterial property and flame retardance.

The invention relates to the technical field of tea leaf rolling fermentation, and discloses a full-automatic tea leaf rolling fermentation device which comprises a rolling disc, a rotating disc is arranged at the top of the rolling disc, a rolling mechanism is arranged at the bottom of the rotating disc, and the rolling mechanism comprises an annular groove, a rolling roller, a round rod, a movable rod and a first reset spring. Rotation of the rotating disc is matched with the rolling disc which swings circumferentially on the spherical supporting rod, a plurality of rolling rollers are driven to roll circumferentially at the top of the rolling disc, and the rolling disc swings circumferentially to achieve the effect of simulating manual rolling, so that the purpose of rolling tea leaves is achieved, and the purposes of breaking tea leaf cell walls and improving tea leaf quality are achieved. Meanwhile, when the rotating disc rotates, an elastic and arc-shaped scraping plate is driven to scrape the tea leaves attached to the upper portion of the rolling disc and is matched with circumferential rotation to generate a discharging effect, so that the tea leaves can be pushed to the outer edge of the rolling disc.

The invention discloses a treatment process for removing impurities in neodymium-iron-boron oil sludge. The treatment process comprises the following steps: step 1, sieving the neodymium-iron-boron oil sludge, washing the neodymium-iron-boron oil sludge in an organic mixed solution, and removing liquid; 2, washing in a weakly acidic mixed aqueous solution, and removing liquid; 3, washing in an alkaline mixed aqueous solution, and removing liquid; 4, washing in water, and removing liquid; and 5, washing in an organic solvent, removing liquid, and drying to obtain purified neodymium iron boron oil sludge powder. According to the treatment process, the neodymium-iron-boron oil sludge is sequentially cleaned through the organic mixed solution, the weakly acidic mixed aqueous solution, the alkaline mixed aqueous solution, the water and the organic solvent, impurity elements such as Si, Mn and Ca and impurity particles in the neodymium-iron-boron oil sludge can be effectively removed, and the treatment process is suitable for the technical field of preparation of regenerated neodymium-iron-boron magnetic powder.

The invention belongs to the technical field of battery pack diaphragm treatment, and particularly relates to a battery pack plastic diaphragm treatment and decomposition device which comprises an equipment shell and a feeding port, the feeding port is formed in the upper surface of the equipment shell, a stirring rod penetrates through the interior of the equipment shell, and a first bearing is installed between the stirring rod and the equipment shell; a stirring rod is arranged in the equipment shell, a first driving motor is arranged between the end part of the stirring rod and the equipment shell, an air blower is arranged on the upper surface of the equipment shell, an air outlet of the air blower is connected with a heating pipe, an electric heating wire is connected in the heating pipe in a penetrating manner, and the end part of the heating pipe is connected with a first connecting pipe. According to the method, the crushed and decomposed plastic diaphragm is treated in a heating and oxidizing mode, then the plastic diaphragm is subjected to acid pickling and oxidizing treatment, and finally the plastic diaphragm is subjected to cleaning and drying treatment, so that oil existing on the surface is removed, and the application universality of the battery pack plastic diaphragm after recycling treatment is improved.

The invention provides a method for recycling lithium manganese iron phosphate waste. The recovery method comprises the following steps: (1) mixing the lithium manganese iron phosphate waste with a first acid solution, introducing sulfur dioxide and oxygen, and carrying out oxidation leaching to obtain leached slurry; (2) the leaching slurry is subjected to copper removal treatment, and leaching residues and leaching liquid are obtained; (3) mixing the leaching residues obtained in the step (2) with a second acid solution, adjusting the pH value, and carrying out a first precipitation reaction to obtain ferromanganese phosphate; and carrying out lithium extraction treatment on the leachate obtained in the step (2) to obtain purified lithium salt. According to the recovery method provided by the invention, the oxidation effect is better, a large number of cation impurities are not introduced, all-component recovery of the lithium iron manganese phosphate battery positive electrode material can be realized, and a battery-grade purified lithium salt material and a precursor iron manganese phosphate product required by the battery-grade lithium iron manganese phosphate positive electrode material can be obtained; and the process cost is low, the added value of the product is improved, and the actual production requirement is better met.

The invention discloses application and a method of phytic acid compounds in inhibition of anode chlorine evolution reaction through seawater electrolysis. The phytic acid compound can be applied to electrolyte for seawater electrolysis to inhibit anode chlorine evolution reaction, the electrolyte is an aqueous solution containing chloride ions, and the electrolyte further comprises the phytic acid compound. The method comprises the following steps: electrifying an electrochemical reaction system comprising a cathode, an anode and an electrolyte for electrolysis so as to obtain hydrogen at the cathode and oxygen at the anode; the electrolyte is an aqueous solution containing chloride ions, and the electrolyte further comprises a phytic acid compound. When the phytic acid compound is used for seawater electrolysis, adsorption and oxidation of chloride ions on an anode can be remarkably improved, the chlorine evolution reaction of the anode can be effectively inhibited, the anode is protected from being corroded, and the seawater electrolysis efficiency is improved; and the phytic acid compound is derived from biomass, is low in price and is easy to popularize and apply.

The utility model relates to the technical field of flue gas desulfurization, in particular to flue gas desulfurization and dust removal equipment for a corn drying boiler, which comprises a treatment tower and a spraying unit arranged in the treatment tower, a scraping component is arranged in the treatment tower and on the lower side of the treatment tower, and the scraping component comprises a driving motor clamped on the lower side of the treatment tower. The output end of the driving motor penetrates through the lower side of the treatment tower, a scraping plate is fixedly connected to the outer side of the output end of the driving motor, crystals attached to the inner wall of the treatment tower are treated through the scraping plate, and meanwhile, stirring blades intermittently stir calcium carbonate slurry; the calcium carbonate slurry is intermittently stirred by the stirring blades, so that oxidation of the calcium carbonate slurry can be accelerated, meanwhile, the crystals can be prevented from being damaged by intermittent stirring, and the crystals attached to the inner wall of the treatment tower can be scraped by the scraping plate, so that the crystals are prevented from being attached to the inner wall of the treatment tower after being solidified.

The invention discloses an electrical control cabinet for an airtight test board of a hydraulic pipeline assembly, and relates to the technical field of electrical control cabinets. The device comprises a device body, a square groove is formed in the right side of the device body, an electrical assembly is arranged in the device body, a plurality of electrical wires are arranged at the bottom of the electrical assembly, a heat dissipation assembly is arranged at the top of the device body and communicates with the interior of the device body, and an airtightness detection assembly is arranged on the left side of the outer wall of the device body. A fixing plate is fixedly installed at the bottom of the device body, and electric push rods are fixedly installed at the four corners of the bottom of the fixing plate and composed of telescopic ends and fixed ends. According to the invention, the direction of the airtightness detection assembly is constantly changed in the testing process of the hydraulic pipeline assembly so as to fit the practical situation that the pipeline is easily interfered by the outside and is pulled to a certain extent in the practical application, so that the airtightness detection data is ensured to be more practical, and the durability of the hydraulic pipeline assembly is detected at the same time.

The invention relates to a method for leaching gold by catalyzing thiosulfate through a solid catalyst, and belongs to the technical field of production of precious metal gold through hydrometallurgy. The method comprises the following steps: grinding gold ore, and mixing to obtain gold ore pulp with the concentration of 10-40wt%; the method comprises the following steps: adding molybdenum disulfide solid powder or molybdenum disulfide nano-suspension into gold ore pulp, then adding thiosulfate, adjusting the pH value to 9-12, leaching gold under an illumination condition, filtering to obtain a gold leaching solution, and cleaning molybdenum disulfide obtained by filtering for reutilization; or the container wall is coated with molybdenum disulfide printing ink, gold ore pulp is added, then thiosulfate is added, the pH is adjusted to be 9-12, gold leaching and filtering are conducted under the illumination condition, gold leaching liquid is obtained, and the molybdenum disulfide printing ink coated on the container wall is reused after being cleaned. According to the method, molybdenum disulfide is used as a solid catalyst, and thiosulfate gold leaching can be efficiently catalyzed under conventional conditions. The cleaning device has the characteristics of high cleaning efficiency and high universality.

The invention discloses a porous carbon material based on microwave calcination and a preparation method thereof, and belongs to the field of porous carbon preparation, the preparation method comprises the steps that a carbon base material and potassium hydroxide are mixed according to the mass ratio of 1: 1-5, a mixed material is obtained, and the carbon base material comprises biomass carbon, resin carbon and fossil carbon; the mixing comprises the following steps: putting the carbon base material and potassium hydroxide into a mixer, and stirring at the rotating speed of 200-600rpm for 3-20 minutes; pressing the mixed material into a block body, and putting the block body into a microwave calcining furnace for calcining treatment; and the calcined block is subjected to acid pickling and drying treatment. The cost and the performance can be adjusted as required by using diversified raw material sources, and the trend of green chemistry and sustainable development is met.

The machining equipment comprises a machine box mechanism, a machining part and cutters, the machine box mechanism comprises a machine box, cover doors are symmetrically and slidably connected into the machine box in a sleeved mode, and a tool magazine mechanism for storing the cutters is arranged at the inner top end of the machine box; the driving mechanism is arranged to drive the first downward pressing mechanism and the maintenance mechanism to work, the first downward pressing mechanism enables a cutter to rotate in an extrusion mode so that the cutter can enter the maintenance mechanism, then kinetic energy of the driving mechanism is regulated and controlled through the separation mechanism so that the kinetic energy of the driving mechanism can be transferred to the maintenance mechanism, and therefore the cutter can be maintained. The sponge is attached to the tool, so that after the sleeve rotates, oil can be evenly smeared on the tool, it is guaranteed that a layer of oil film is reserved on the surface of the tool, and it is avoided that the tool is located in the tool storage for a long time, and oxidation and corrosion of the tool are accelerated.

The invention relates to the technical field of food packaging, in particular to an antibacterial fresh-keeping packaging film for food packaging and a preparation method of the antibacterial fresh-keeping packaging film, and aims at solving the problems that a traditional food packaging film is insufficient in antibacterial performance and not ideal in fresh-keeping effect. According to the preparation method, polyethylene resin and polylactic resin are taken as main raw materials, so that the packaging film is endowed with excellent mechanical property and barrier property, the oxidation process of food can be slowed down, the damage of oxygen to the food is reduced, the loss of nutritional ingredients in the food is prevented, and the freshness and nutritional ingredients of the food can be effectively kept; the modified nano-silver particles are added into the food, so that the growth and metabolic activities of microorganisms such as various bacteria and molds can be effectively inhibited, the risk that the food is polluted by the microorganisms is remarkably reduced, the deterioration of the food due to microbial decomposition is avoided, and the food quality is improved. Therefore, the quality and taste of the food are better maintained, and the shelf life of the food is prolonged.

The invention relates to an ammonia nitrogen adsorption type MABR membrane material as well as a preparation method and application thereof. The ammonia nitrogen adsorption type MABR membrane material comprises a porous supporting layer and a membrane layer which is located on the surface of the porous supporting layer and has an ammonia nitrogen adsorption function, the membrane layer contains functional groups, and the functional groups are one or more of hydroxyl, amino or epoxy groups. The membrane layer containing specific functional groups is introduced to the surface of the porous supporting layer, on one hand, the functional groups in the membrane layer can interact with ammonia nitrogen through Van der Waals force, electrostatic interaction, hydrogen bonds and the like, physical adsorption of the ammonia nitrogen is achieved, the ammonia nitrogen is promoted to approach the surface of the MABR membrane, and therefore the ammonia nitrogen is effectively adsorbed near the surface of the membrane; convenient conditions are provided for subsequent treatment; on the other hand, the biocompatibility of the membrane surface can be improved, attachment and growth of microorganisms are promoted, the oxidation process of the membrane surface biological membrane on ammonia nitrogen is further enhanced, and the treatment effect of the ammonia nitrogen is effectively improved through the synergistic effect.

The invention relates to a calcium-based solid waste residue slurry desulfurizer, a preparation method, a desulfurization method and a soil remediation agent, and belongs to the technical field of solid waste utilization. The method comprises the following steps: carrying out sedimentation treatment on calcium-based solid waste residue slurry to obtain a calcium-based solid waste residue slurry reaction solution; adding a phase change inhibitor into the calcium-based solid waste residue slurry reaction liquid to obtain mixed slurry; and carrying out solid-liquid separation on the mixed slurry to obtain a solid-phase substance, mixing the solid-phase substance with water, and adding a conditioning agent to obtain the calcium-based solid waste residue slurry desulfurizer. The desulfurizer can be used for desulfurization reaction to obtain a desulfurization solution and desulfurization solid slag; carrying out solid-liquid separation on the desulfurization solution after neutralization reaction to obtain washing water filtrate and secondary desulfurization solid residues; and preparing the soil ecological restoration agent from the desulfurized solid residues and the secondary desulfurized solid residues. The desulfurizer is prepared from the calcium-based solid waste residue slurry discharged by aluminum oxide, alkali resources are recycled, the loss of aluminum oxide is reduced, the desulfurizer is used for flue gas desulfurization, the purpose of resource utilization of solid waste is achieved, and the desulfurizer has the value and significance of reducing pollution and carbon and achieving synergistic interaction.

The invention relates to a pressurized oxygen-enriched leaching method for a waste catalyst containing tungsten and molybdenum, and relates to the technical field of solid waste resource utilization, in particular to a pressurized oxygen-enriched leaching method for efficiently recovering tungsten and molybdenum from the waste catalyst containing tungsten and molybdenum, which comprises the following steps: firstly, removing organic matters and sulfides in the waste catalyst through anaerobic pyrolysis and oxidizing roasting steps; tungsten and molybdenum are oxidized into tungsten oxide and molybdenum oxide. Then, the treated catalyst is smashed and subjected to oxygen-enriched alkaline leaching in a high-pressure reaction kettle, a mixed solution of sodium carbonate and sodium hydroxide is selected as a leaching agent, and tungsten and molybdenum are converted into water-soluble sodium tungstate and sodium molybdate respectively under the conditions that the temperature is 150-200 DEG C and the oxygen pressure is 0.1-1.5 MPa, so that efficient leaching is achieved. By means of the method, the leaching rates of molybdenum and tungsten can reach 99% or above and 95% or above respectively, the recovery efficiency of valuable metal is remarkably improved, and the process is simple, environmentally friendly and suitable for large-scale industrial production.

The invention provides a preparation method of a composite solid electrolyte coated positive electrode material. According to the invention, the silicon coupling agent is coated on the solid electrolyte, and a reticular retaining layer containing organic silicon is formed on the surface of the solid electrolyte, so that the stability of a material interface is effectively stabilized, the electrolyte is prevented from corroding an electrode material, and the rate capability and the cycling stability of a lithium-rich material are greatly improved. Then a cationic polymer is selected as a base membrane to be assembled into two layers of hybrid membranes to coat the outermost layer of the solid electrolyte, and then the crown ether lithium salt complex is introduced into the surface of the phospholipid / cationic polymer hybrid membrane, so that the occurrence of side reactions on the surface of an electrode is effectively inhibited, the structure of an active material is stabilized, and meanwhile, the thermal stability of the membrane is improved; and finally, the surface of the positive electrode material is coated with the composite solid electrolyte.

The invention provides a carbon fiber and a preparation method and application thereof, and relates to the technical field of carbon fiber surface modification.The preparation method of the carbon fiber comprises the following steps that a polyacrylonitrile precursor is used as a raw material, graphitized fibers are prepared, and the graphitized fibers are subjected to surface modification; sequentially performing electrochemical oxidation surface treatment and sizing on the graphitized fibers to obtain carbon fibers; wherein the electrochemical oxidation surface treatment comprises the steps that first-stage surface treatment and second-stage surface treatment are sequentially conducted on the graphitized fibers, an alkaline electrolyte with hydroxyl is adopted in the first-stage surface treatment, and a composite electrolyte of ammonium acetate and ammonium dihydrogen phosphate is adopted in the second-stage surface treatment. Oxygen-containing functional groups and nitrogen-containing functional groups on the surface of the fiber are added, so that the interface performance of the carbon fiber can be improved.

The invention belongs to the technical field of solid waste treatment, and particularly relates to a stabilizing treatment method for iron-aluminum slag containing Ni, Co and F. The stabilizing treatment method comprises the following steps: (1) mixing the iron-aluminum slag with water to prepare first slurry, adding an alkaline substance under the condition of continuously introducing air, and reacting after stirring to obtain second slurry; and (2) under the conditions of continuously introducing air and stirring, adding a calcium-containing substance and a phosphate ion-containing solution into the second slurry, adjusting the pH value of the second slurry to be greater than or equal to 8, and carrying out solid-liquid separation after reaction to obtain filtrate and stabilized iron-aluminum slag.

The invention discloses an intelligent shoebox capable of drying, decomposing and filtering waste gas, the intelligent shoebox is provided with a drying part and a gas treatment part, and during drying, drying gas is treated through the gas treatment part so as to remove formaldehyde generated by drying shoes. According to the shoe drying device, the air pumping device sucks outside air and pressurizes the outside air, the pressurized air is conveyed to the temporary storage bin through the valve control and heated to 30-50 DEG C in the temporary storage bin through the heating device, and then the heated air is conveyed into the placing cavity through the pipeline under the control of the valve to dry shoes in the placing cavity; during drying, when gas enters the first waste gas treatment device through the purification pipeline, formaldehyde in the gas is decomposed into carbon dioxide and water under the action of an ultraviolet lamp and titanium dioxide, and hydrogen peroxide is added through the reagent liquid adding device in the reaction process to promote the oxidation process of the formaldehyde, so that the formaldehyde in the gas is removed; water generated by removal overflows into the first cavity, and other substances contained in the gas are adsorbed by activated carbon in the second cavity.

The utility model provides an aluminum alloy part oxidation device, belongs to the technical field of material surface treatment, and aims to solve the problem that the oxidation effect of an aluminum alloy part is influenced by non-uniform electrolyte caused by effective component sedimentation due to long-time standing of the electrolyte of the conventional aluminum alloy part oxidation device in the anodic oxidation process. The electrolyte box is of a rectangular box-shaped structure; the gear set shell is fixedly arranged at the upper end of the front end surface of the electrolyte box; the reciprocating driving motor is fixedly arranged on the left end face of the gear set shell; the spring limiting blocks are arranged on the upper end surfaces of the two cross beams of the pendant bracket; the reciprocating rotating assembly is arranged in the gear set shell; and the hanging frame fixing assembly is arranged at the position of the hanging piece support. The device has the comprehensive advantages that the electrolyte components are kept stable and uniform, and the oxidation process is faster and more efficient.

The invention provides a stable slow-release antioxidant skin care composition emulsion as well as a preparation method and application thereof, and belongs to the technical field of cosmetics. The stable slow-release antioxidant skin care composition emulsion provided by the invention is prepared from the following components in percentage by mass: 1.2 to 2.5 percent of resveratrol-ATP (adenosine triphosphate) nanoparticle compound, 1.0 to 3.0 percent of chitosan microcapsule, 0.8 to 2.3 percent of active component, 7.2 to 14 percent of stable component and the balance of nano bubble water, the active components comprise tea tree oil, sodium hyaluronate and beta-glucan; the stable component comprises glycerol, ethanol and carbomer; the resveratrol-ATP nano-particle compound and the tea tree oil are coated in the chitosan microcapsule. The result of the embodiment shows that the antioxidant skin care composition emulsion has a very good antioxidant effect on dopa molecules, so that the oxidation synthesis of melanin is obviously inhibited, and the antioxidant skin care composition emulsion can promote the growth of cells and is beneficial to eliminating scars.

The invention relates to the technical field of preparation of ammonium heptamolybdate, in particular to a preparation method of ammonium heptamolybdate. According to the method, dissolution of molybdenum in the molybdenum concentrate is accelerated by using the efficient catalyst, so that the recovery rate of molybdenum is increased. The preparation method of the ammonium heptamolybdate comprises the following specific steps: firstly, crushing molybdenum concentrate, oxidizing low-valence molybdenum in the molybdenum concentrate into high-valence molybdenum by hydrogen peroxide under the catalytic action of a catalyst, dissolving out the high-valence molybdenum, and then carrying out ammonia leaching and impurity removal; and finally evaporating, concentrating, cooling and crystallizing. The catalyst used in the preparation process of ammonium heptamolybdate is a carbon-nitrogen doped metal oxide nano material, has a large specific surface area, is rich in oxygen vacancies, has high catalytic activity, and is beneficial to rapid oxidation and dissolution of molybdenum. In addition, a large amount of acid liquor and ammonia water are not used in the preparation process of the ammonium heptamolybdate, so that the pollution is reduced.

The invention belongs to the field of catalyst material preparation, and particularly relates to a preparation method and application of a metal oxide monolithic catalyst, and the metal oxide monolithic catalyst provided by the invention is prepared by hydrothermally loading a copper-manganese composite oxide on a foam metal substrate, an oxide heterogeneous interface can be formed on the surface of the catalyst prepared by using the method, ozone is activated by using the electron delocalization effect of the oxide heterogeneous interface, high-active oxygen species are generated, activation energy required by reaction can be reduced without high temperature and high pressure, and meanwhile, the catalyst has good catalytic activity. The monolithic composite metal oxide catalyst is pretreated with hydrogen peroxide, a multi-stage structure can be formed on the surface of a substrate, and adsorption of organic pollutants can be greatly promoted through treatment of a surfactant.

The invention relates to the technical field of pond oxygenation, in particular to a pond oxygenation device which comprises an oxygen conveyor, a hose communicated with the oxygen conveyor, a conveying channel connected with the hose and pipelines arranged on the outer wall of the conveying channel in an array mode. Openings in the two ends of the pipeline extend into the conveying channel. The tail purification pond has the beneficial effects that the microporous aeration device is additionally arranged at the bottom of the tail purification pond, corresponding nanotubes and hoses are arranged, dissolved oxygen at the bottom of the pond is increased, water flow rotation and upper and lower water layer exchange are caused, decomposition of pollutants such as COD, nitrogen and phosphorus in water is promoted, oxidation of ammonia nitrogen, nitrite and hydrogen sulfide at the bottom is accelerated, and growth of harmful microorganisms at the bottom is inhibited; the pond water environment, especially the pond bottom anoxic environment, is improved, and the stability of the water quality of the aquaculture pond is ensured.