888results about How to "Efficient recycling" patented technology

The invention provides a YARN cluster node resource dynamic adjustment method and system based on dual-mode perception, and relates to the technical field of data processing, and the method comprises the steps: collecting system index data and application program index data, respectively constructing two deep neural network models for fusion evaluation, calculating a resource dynamic adjustment coefficient, and obtaining a resource dynamic adjustment result; node resources are updated in real time by adopting a sliding time window mechanism, and a multi-dimensional resource allocation optimization model is constructed by utilizing a genetic algorithm to realize optimal resource allocation. According to the invention, the utilization rate of cluster resources can be improved, resource competition is reduced, and intelligent dynamic adjustment of node resources is realized.

The invention discloses a steel slag whole-process dry treatment process, and belongs to the technical field of steel slag treatment. Comprising the following steps: S1, a rolling procedure: carrying out rolling crushing on liquid steel slag, and in the process, cooling by adopting an air cooling mode to solidify the liquid steel slag; s2, a cooling procedure, wherein the steel slag obtained in the step S1 is cooled to 100 DEG C or below in a non-air-cooling mode; s3, a grinding procedure; s4, a sorting procedure; and S5, a waste heat recovery process, wherein heat released by the steel slag in the rolling process and the cooling process is recycled. The invention further discloses a steel slag whole-process dry processing system. Through reasonable design, gradient cooling is formed in the rolling procedure and the cooling procedure, meanwhile, heat released by steel slag in the two procedures is recycled, and the problem that the steel slag treatment waste heat recovery rate is low is solved.

The invention provides a system and a method for treating coexisting new pollutants in drinking water, and the system and the method are characterized in that firstly, ozone microbubble water with small volume and large specific surface area and magnetized superfine activated carbon are used for carrying out oxidation treatment on the coexisting new pollutants and adsorbing pollutants with small molecular weight and relatively high activity; the purpose of removing part of new pollutants is achieved; then, under the irradiation of an ultraviolet lamp tube, the reducing agent catalyzes sulfite to generate reducing free radicals such as hydration electrons [eaq-],. H and SO3., and under the substitution action of iodide ions, reductive dehalogenation and iodine substitution reaction of the halogenated organic matter difficult to degrade are achieved, and reduction removal of new pollutants difficult to degrade is achieved. The system is simple and compact in structure, is a treatment device integrating filtration, oxidation, adsorption and reduction, reduces the occupied area, can realize effective removal of coexisting new pollutants with different molecular characteristics and different reaction activities through multiple actions of physical interception, oxidation, adsorption, reduction and the like, and has a wide application prospect.

The invention relates to the technical field of photovoltaic module recycling, and discloses a photovoltaic module resource recycling method which comprises the following steps: disassembling a photovoltaic module to obtain a photovoltaic panel and a peripheral module; the photovoltaic panel is fed into a pyrolyzing furnace to be pyrolyzed, a solid product, pyrolysis oil and pyrolysis gas are obtained, and the pyrolysis gas is fed into the pyrolyzing furnace to serve as fuel; sorting the solid product to obtain a soldering tin strip, glass fragments, a battery panel silicon wafer and ash; the glass fragments are fed into a high-temperature melting furnace to be melted into liquid fluid, and the melted liquid fluid is sprayed out through a nozzle of a centrifugal machine to form glass fiber cotton; an acid pickling solution is added into the ash residues, leaching liquid and solid residues are obtained after full reaction, elemental silver is obtained after the leaching liquid is treated, and silicon powder is obtained after the solid residues are subjected to phosphoric acid treatment. According to the invention, the problems of high energy consumption, serious pollution and incapability of fully recycling the waste photovoltaic panel in the existing waste photovoltaic panel recycling method are solved, and the full-component high-value recycling of the waste photovoltaic panel is realized.

The invention discloses a metallurgical waste gas purification and recovery method based on a particle swarm optimization algorithm, and the method comprises the following steps: S1, carrying out the pretreatment of metallurgical waste gas, monitoring the temperature, pressure, flow velocity and chemical components in real time, and inputting the temperature, pressure, flow velocity and chemical components into an optimization module; s2, key parameters in the purification and recovery process are analyzed through a recursive morphological coupling algorithm, a problem is decomposed into sub-problems, and operation parameters are determined; s3, performing global search through a morphological recombination particle swarm optimization algorithm to generate an optimization parameter set; s4, performing dynamic recombination on the potential optimal solution by applying an evolutionary form recombination algorithm, and improving a local solution; s5, the optimized parameter set is applied to the purification device, dynamic adjustment is conducted through a recursive morphological coupling algorithm, and recognition and recovery of rare components are achieved; s6, performing multi-stage detection on the purified and recycled waste gas, and feeding back to an optimization module for parameter adjustment; and S7, according to waste gas components and process requirements, operation parameters are adjusted in a self-adaptive mode.

The invention relates to the technical field of thallium recovery and treatment, in particular to a method for efficiently recovering thallium from a complex solution. The invention discloses a method for efficiently recovering thallium in a complex solution. The method comprises the following steps: S1, multi-stage replacement; a metal displacer is added into the thallium-containing feed liquid, a multi-stage displacement reaction is carried out, and the pH value during the multi-stage displacement reaction is 3-5; after the reaction is finished, separating to obtain thallium-removed feed liquid and thallium-containing solid; s2, dissolving; dissolving the thallium-containing solid with an inorganic acid to form a thallium-containing solution; s3, oxidizing and precipitating; and adding an oxidizing agent into the thallium-containing solution, adjusting the pH value of the solution to 1-3 after the oxidation is finished, generating a precipitate, and separating to obtain a thallium hydroxide solid. The method disclosed by the invention is wide in application range, can be used for treating thallium-containing wastewater with various concentrations, is simple in process and easy to implement, and meanwhile, thallium and other valuable metals can be recycled, so that efficient recovery and utilization of resources are realized.

The utility model discloses a rotary valve structure of a dust cup of a dust collector, which comprises an outer dust cup, a plurality of first cavities are arranged in the outer dust cup, a first communication hole is arranged on a partition plate, and the outer dust cup is provided with a first dust discharge port corresponding to a dust discharge channel of a base station of the dust collector; and the inner dust cup is rotationally connected to the partition plate and provided with a second communicating hole and a second dust discharging opening, and a linkage piece corresponding to a rotary guide groove in the dust collector base station is arranged on the outer side of the inner dust cup. The outer dust cup and the inner dust cup form a rotary valve structure, so that when the dust collector host and a base station are assembled in a butt joint manner, the linkage piece is matched with the rotary guide groove to rotate the inner dust cup, each dust collection cavity and a corresponding filtering structure are blocked, and dust is prevented from flowing reversely when garbage in the dust cups is discharged and recycled; and dust, hair and dirt with different particle sizes intercepted by the dust collection cavities are discharged respectively, dirt and garbage blockage in the dust discharge channel is avoided, and therefore it is guaranteed that the dust collector is used neatly, conveniently and efficiently.

The invention discloses a combined heat and power system and method for coupling thermochemical energy storage. According to the technical scheme, the combined heat and power system coupled with thermochemical energy storage comprises a thermochemical energy storage device, a compressed air energy storage device, a waste heat boiler and a steam turbine power generation device. In a low ebb of electricity utilization, heat storage is performed on the thermochemical energy storage device by adopting electric energy, and gas exhausted by the thermochemical storage tank is further stored by adopting a compressed air energy storage device; in the power utilization peak or peak, the compressed air energy storage device is started to release energy, the thermochemical energy storage device is started to release heat to the outside, high-temperature gas exhausted through heat release reaction is supplied to the waste heat boiler, steam generated by the waste heat boiler drives the steam turbine power generation device to generate power, and exhausted steam is used for supplying heat to the outside to achieve cogeneration. Thermochemical energy storage, compressed air energy storage, the waste heat boiler and steam turbine power generation are coupled for application, and the energy utilization efficiency of the thermochemical energy storage system is effectively improved.

The invention discloses a carbon-based confinement type catalyst as well as a preparation method and application thereof. The catalyst comprises a sludge carbon substrate, and carbon nanotubes and active metals covering the surface of the substrate, the active metal comprises Fe and Ni; ni is doped in the carbon nanotube to form a confinement structure; fe is loaded outside the carbon nanotubes. The active metal of the carbon-based confinement type catalyst is confined in a superstructure carbon nanostructure covering the surface of a carbon substrate, so that the hydrothermal oxidation efficiency can be effectively improved, the degree of cracking of sludge extracellular polymeric substances is improved, deep cracking of sludge is realized, and the risk of secondary pollution caused by loss of the active metal is reduced; the catalyst can selectively oxidize macromolecular organic matters released by sludge disintegration, the product selectivity of micromolecular carboxylic acid is improved to be higher than 95% by a confinement structure, the micromolecular carboxylic acid can be further utilized as a carbon source, the treated supernate can be used as a composite carbon source to be applied to the biochemical process of sewage treatment, and resource utilization is realized; the catalyst can realize HTO treatment of sludge at 200 DEG C or below, and does not generate biotoxic by-products in the sludge treatment process, and the treated product can be used as a high-quality carbon source.

The invention belongs to the technical field of environmental protection, and discloses a method for rapidly and efficiently removing and recycling polycyclic aromatic hydrocarbon in water and a carbon-based adsorbent, the method comprises the following steps: S1, preparing a modified carbon-based adsorbent; s2, treating the polycyclic aromatic hydrocarbon pollutant wastewater; and S3, recycling the polycyclic aromatic hydrocarbon. According to the preparation method, H3PO4 or ZnCl2 is taken as an activating agent, and an activated carbon base material and an activating process are controlled, so that nano-micron multi-scale modified carbon-based adsorbent particles which are mainly prepared from a large number of long-strip-shaped gap mesopores which are communicated with one another and are approximately distributed in parallel and are auxiliary from a small number of discrete irregular groove-shaped mesopores are obtained; the long and narrow long-strip-shaped gap mesopores of the particle are matched with the irregular groove-shaped mesoporous structure, so that large-size polycyclic aromatic hydrocarbon can be quickly adsorbed and desorbed, and the balance of adsorption and desorption efficiency can be realized; on one hand, the adsorption and desorption efficiency of pollutants is improved, and on the other hand, the dosage of the adsorbent is greatly reduced.

The invention provides a formula of a sample eluent. The eluent comprises a surfactant, peptone with a concentration of 9 to 12 g / L, normal saline with a concentration of 7.2 to 9.6 g / L, tween-80 with a concentration of 0.8 to 1.2 g / L, disodium hydrogen phosphate with a concentration of 2.75 to 2.97 g / L and potassium dihydrogen phosphate with a concentration of 1.12 to 1.64 g / L. The eluent can effectively improve the sample recovery rate, and at least 90% of target substances can be successfully recovered after the eluent is treated by specific steps. In the use process, a dry and pollution-free sampling brush head needs to be completely immersed in the prepared eluent, then oscillation is carried out under set conditions to promote a target substance to be dissolved in the liquid, and finally the eluent is collected for subsequent analysis. The method is simple and convenient to operate, high in efficiency and very suitable for extracting and detecting various biological samples.

The invention discloses a flue gas waste heat recovery device and method for a garbage incinerator. Relates to the technical field of waste incineration treatment and comprises a waste heat recovery box, a heat exchange pipe set driven by a main control gear, a transfer gear and a fixed gear ring is arranged in the waste heat recovery box, and heat exchange pipes conduct revolution and autorotation in smoke at the same time to enhance heat exchange. Accumulated dust on the outer surface of the heat exchange tube is removed through the rotating treatment scraper and the removing brush cylinder, and the reciprocating treatment kettle is used for knocking the tube wall of the heat exchange tube to shake off the dust; the flow speed and the flow direction of flue gas can be intelligently adjusted through an angle-adjustable speed adjusting plate on a treatment scraper, so that the device is suitable for different working conditions; the device realizes efficient and stable recovery of flue gas waste heat, can keep a heat exchange surface clean on line, and is high in adaptability.

The invention relates to the technical field of wastewater treatment, in particular to white board paper coating wastewater recycling treatment equipment and a white board paper coating wastewater recycling treatment process. The white board paper coating wastewater recycling treatment equipment comprises a moving seat, universal wheels are installed at the four corners of the lower end of the moving seat, a treatment frame is installed at the upper end of the moving seat, and a feeding frame is further installed at the upper end of the moving seat and arranged on one side of the treatment frame; a recycling frame is further mounted at the upper end of the moving seat and located on the side, away from the feeding frame, of the processing frame. After wastewater is introduced into the feeding frame, the wastewater is filtered by the filter plate and enters the water outlet cavity, and flocculates are respectively cleaned into the recovery box and the recovery frame by the cleaning brush bristles and the cleaning scraper, so that the flocculates are prevented from being adsorbed on each device, and the wastewater is effectively recovered and treated.

The invention relates to the technical field of energy storage, and discloses a constant-pressure compressed air energy storage device and an energy storage system.The constant-pressure compressed air energy storage device is characterized in that an energy storage library is divided into a first closed cavity and a second closed cavity by a flexible air bag; first fluid is stored in the second closed cavity; the interior of the flexible air bag is communicated with the second closed cavity; during energy storage, compressed air enters the first closed cavity, the flexible air bag is compressed, the size of the first closed cavity is increased, the first fluid in the second closed cavity is compressed and liquefied, and temperature rise and pressure rise of the compressed air are relieved; during energy release, the first fluid is heated, the first fluid absorbs heat to be gasified and transfers heat to the compressed air, the flexible air bag expands, the size of the first closed cavity becomes small, and air is exhausted. During energy storage, gas storage is approximate to constant pressure, temperature and pressure increase of the first closed cavity is slowed down, more air is stored, and power consumption is reduced; and during energy release, temperature and pressure reduction is relieved, approximate constant pressure is achieved, and output air energy is increased.

The optical element polishing device comprises a polishing box, an L-shaped support and a motor are installed in the polishing box, a polishing table is installed on the side portion of the L-shaped support, a suction cup is rotatably installed in the polishing table, a suction cup rotating shaft is in butt joint with a motor shaft, and the top of the suction cup is used for installing an optical element. And a lifting electric polishing head is movably mounted at the upper end of the L-shaped bracket. The driving assembly is designed, through intelligent control of a temperature sensor and a U-shaped electromagnetic block, the function that the polishing head automatically and gradually moves towards the center of the optical element along with lowering of the liquid level of cooling liquid is achieved, therefore, the all-directional and uniform polishing effect is ensured, the polishing precision and consistency are improved through the design, and compared with electric driving, the polishing efficiency is greatly improved. Manual intervention is reduced, the structure principle is simple, and the machining efficiency is improved.

The invention relates to the technical field of seawater desalination, and particularly provides an effect body evaporator, a low-temperature multi-effect distillation seawater desalination system and a low-temperature multi-effect distillation seawater desalination method. When the steam extraction circulating unit extracts steam, the opening degree of a flexible communicating hole in the double-flow-channel heat exchange pipe is gradually increased, so that most of steam entering the heat exchange pipe flows to an intermediate-effect evaporator through a main flow channel; and under the condition that the flow of the steam received by the first-effect evaporator is reduced, the flexible communication hole is gradually reduced, so that most of the steam entering the heat exchange pipe is subjected to heat exchange through the auxiliary flow channel under the action of the steam extraction pressure difference, and therefore, efficient utilization and heat energy recovery of the steam in the low-temperature multi-effect distillation seawater desalination system are realized, and the energy consumption is reduced. And meanwhile, scaling of the outer wall of the heat exchange tube of the first-effect evaporator due to the fact that the heat exchange tube bears the relatively unstable steam change condition can be effectively prevented, and scaling and cleaning difficulty of the first-effect heat exchange tube bundle are greatly reduced.

The invention discloses a method for treating copper cobalt oxide ore, and belongs to the technical field of non-ferrous metal hydrometallurgy. The method comprises the following steps: carrying out critical leaching on the copper-cobalt oxide ore to obtain a leaching solution and leaching residues, returning the leaching residues to a wastewater and waste residue neutralization process, carrying out a sulfuration sectional copper-cobalt deposition process on the leaching solution to obtain two products of copper sulfide and cobalt sulfide, carrying out targeted adsorption cobalt recovery on the produced sulfurized solution, returning the desorbed solution to a critical leaching process, and carrying out secondary leaching on the desorbed solution. After adsorption, liquid enters a waste water and waste residue neutralization process, produced neutralization residues are piled up, and produced neutralization water is returned to a critical leaching process. The method sequentially comprises the key procedures of critical leaching, vulcanization segmented copper and cobalt deposition, targeted adsorption and waste water and waste residue neutralization. The process adopted by the invention has the advantages of short process flow, high recovery rate, zero discharge of wastewater and the like. Compared with a traditional process, the copper and cobalt leaching rates can reach 90% or above, and the cobalt recovery rate can be increased by 10% or above.

The invention provides an efficient chemical polishing device capable of recycling polishing liquid and a process of the efficient chemical polishing device, and relates to the technical field of aluminum profile machining, the efficient chemical polishing device comprises a stabilizing frame, a switching mechanism and two symmetrically-distributed positioning shells are installed on the upper portion of the stabilizing frame, and the switching mechanism is jointly composed of a first electric motor and a conveying plate; and two sets of symmetrically-distributed conveying mechanisms are installed above the conveying plate, and each conveying mechanism is jointly composed of a second electric motor, a threaded rod, a conveying shell, a supporting shell and an extrusion strip. Rapid switching of the positions of the two working belts is achieved through the switching mechanism, after one set of working belts are polished, the other set of working belts to be polished can be rapidly moved to the working position, the idle time and the adjusting time of equipment are shortened, the continuous production process is optimized, and the production efficiency is improved. And tedious operation and long-time shutdown of traditional equipment during replacement of a machining object are avoided, efficient and smooth operation in the production process is ensured, and the comprehensive production efficiency of the equipment is further improved.

The invention relates to an LED packaging device and method, and belongs to the technical field of LED packaging, an electric heat recovery system is arranged to recover heat emitted by an LED assembly and convert the heat into current, the current is used for supplying power to an external battery, heat dissipation of the high-power LED assembly is achieved, meanwhile, the heat is converted into electric quantity and recovered, waste is avoided, and the environment is protected. The control assembly determines whether the power supply end of the LED assembly is the external battery or the power grid according to the electric quantity of the external battery, intelligent regulation and control of the electric quantity stored in the external power supply for power supply of the LED is achieved through two threshold values pre-stored in the control assembly, and heat dissipated by the LED is recycled more effectively. And the plurality of groups of thermoelectric conversion elements are connected in series, so that the heat emitted by the LED can be more effectively recovered.

The invention provides a kitchen garbage biomass energy resource cascade recovery system, which comprises a pretreatment unit, a biomass energy resource cascade recovery unit, a biomass energy resource cascade recovery unit and a biomass energy resource cascade recovery unit, and is characterized in that the pretreatment unit is used for pretreating kitchen garbage and straws to obtain slurry and solids; the solid phase treatment unit comprises a biological hydrolysis device, a biological fermentation device and a biological decomposition device which are connected in sequence; the biological hydrolysis device is connected with the pretreatment unit; the product utilization unit is connected with the biological decomposition device; the liquid phase treatment unit comprises a dark fermentation hydrogen production device, a microbial electrolysis cell hydrogen production device and an anaerobic digestion methane production device which are connected in sequence; the dark fermentation hydrogen production device is connected with the pretreatment unit; and the tail water utilization unit is connected with the anaerobic digestion methane production device. The gas, the liquid and the solid generated by the recovery system are subjected to effective energy recovery and maximum resource utilization, no three wastes are generated, and the recovery system can be widely applied to the fields of agriculture, environmental protection, energy and the like.

The invention provides a waste mine pit resource utilization mining method based on sludge solidification, and relates to the technical field of mine exploitation and resource recovery, and the method comprises the steps of sludge and water body composition analysis, layered water body extraction, wastewater heavy metal treatment, multi-stage filtration and centrifugal separation, solidified body putting and gradual slow release, multi-stage stirring, and layered exploitation. And waste rock and tailings are backfilled. According to the method, environment-friendly treatment and resource mining of the waste mine pit sludge are effectively achieved, environmental pollution is reduced, the recovery rate of mineral resources is increased, and good economic and social benefits are achieved.

The invention relates to a green ammonia synthesis method and system taking renewable energy as power. The method comprises the following steps: S1, providing high-temperature reaction gas; s2, raw material gas is heated through at least part of the high-temperature reaction gas, and heated raw material gas and first cooled mixed gas are obtained; s3, carrying out heating treatment on the adsorbent adsorbing the ammonia gas through the first cooling mixed gas to desorb the ammonia gas, so as to obtain desorbed gas containing the ammonia gas; s4, the desorption gas is subjected to cooling treatment and flash evaporation treatment, and liquid ammonia and first flash evaporation gas are obtained; and S5, carrying out ammonia gas adsorption on the first flash steam through the adsorbent. According to the green ammonia synthesis method taking the renewable energy source as the power, the generated ammonia gas is subjected to low-temperature adsorption and high-temperature desorption, so that efficient recovery of ammonia can be realized; and the energy utilization of the system is reasonable, the energy consumption is reduced, the operation difficulty of device operation is simplified, and the device is more suitable for application in green ammonia scenes.

The invention discloses a compressive property detection device for tempered glass production and a detection method, and relates to the technical field of tempered glass production, the compressive property detection device comprises a bottom plate, the middle position of the upper surface of the bottom plate is provided with a bearing table, and the bearing table is used for placing glass; the pressurizing mechanism is mounted on the upper surface of the bottom plate, vertically corresponds to the bearing table and is used for applying pressure to the glass; the electric sliding table mechanism is installed on the upper surface of the bottom plate, and the moving end of the electric sliding table mechanism moves in the length direction of the bottom plate. And the liquid coating mechanism is mounted on one side of the moving end of the electric sliding table mechanism and is used for coating the surface of the glass with a layer of non-Newtonian liquid so as to prevent the glass from being sputtered all around when the glass is broken. According to the invention, the non-Newtonian liquid is coated on the outer side of the glass, and when the glass is broken in a compression resistance test process, the liquid is rapidly converted into a high-viscosity state due to a shear thickening effect to form a temporary barrier to effectively adhere and capture high-speed flying glass fragments, so that the splashing phenomenon of the glass fragments is obviously reduced.

The chipping collecting device comprises a workbench, a through machining groove is formed in the middle of the top of the workbench, a machining plate is rotationally connected to the middle of the inner wall of the machining groove, stand columns are fixedly connected to the four corners of the top of the workbench respectively, and a top plate is fixedly connected to the tops of the stand columns. A dust collection assembly is fixedly connected to the top of the top plate, fixing plates are symmetrically and fixedly connected to the two sides of the bottom of the workbench, a rotating assembly is arranged between the two fixing plates, and a support is fixedly connected to the edge of the bottom of the workbench. According to the chipping collecting device for fiberboard edging machining, the dust collection assembly, the rotating assembly and the like are arranged, chippings generated by edging can be adsorbed in all directions through the dust collection assembly in the edging machining process, meanwhile, when too many chippings are accumulated on the working plate, the machining plate can be inclined through the rotating assembly, and therefore the chippings can be effectively collected. Therefore, chippings are convenient to clean, and practicability is high.

The invention discloses a recycling and regenerating process based on an old material of an asphalt pavement, and belongs to the technical field of asphalt pavement regeneration, the recycling and regenerating process comprises the following steps: S1, heating and uniformly stirring epoxy resin and petroleum asphalt, then adding a reactive diluent and an accelerant, and uniformly stirring to obtain an epoxy component; s2, stirring and heating the isocyanate tripolymer to a constant temperature, slowly dropwise adding the cardanol, after the cardanol is completely dropwise added, keeping the temperature, carrying out a reaction, and completely reacting the isocyanate tripolymer with the cardanol to obtain a blocked isocyanate tripolymer; s3, mixing the blocked isocyanate tripolymer with an epoxy component to obtain a cementing material; s4, stirring and heating the old graded asphalt material, then heating the cementing material, continuing to stir uniformly, paving the mixture on the pavement, leveling, compacting and curing to form a recycled asphalt pavement; the utilization rate of old asphalt pavement resources can be increased, and the mechanical strength of the recycled asphalt pavement can be improved.

The invention relates to the technical field of high-value chemical recycling of waste plastics, in particular to a method for producing a high-value product through mixed catalytic cracking of waste plastics and heavy oil, which comprises the following steps: A) crushing the waste plastics, and carrying out anhydrous cleaning treatment to obtain clean waste plastic fragments; b) mixing the clean waste plastic fragments with a solvent in a liquefaction unit, and heating and liquefying to obtain waste plastic liquefied liquid; c) filtering the waste plastic liquefied liquid in a filtering unit; d) contacting the filtered filtrate with a fluidized catalyst in a catalytic cracking unit for catalytic cracking reaction to obtain an oil-gas mixture and a spent catalyst; e) performing product separation on the oil-gas mixture; heavy oil is recycled to the liquefaction unit; conveying the spent catalyst to a catalyst regeneration unit, and regenerating under an aerobic condition; the regenerated hot catalyst circularly enters the catalytic cracking unit. According to the invention, high-valued cyclic utilization of the waste plastics can be realized.

The invention discloses a grading magnetic-flotation combined beneficiation method for sulfur-oxygen mixed copper ore. The grading magnetic-flotation combined beneficiation method comprises the steps of ore grinding and screening, magnetic separation, grading, copper sulfide flotation, copper oxide roughing and copper oxide enhanced scavenging. According to the method, strong magnetic separation is adopted in the mill grading system to recover part of coarse-grain copper oxide, excessive grinding of copper oxide minerals in the ore grinding process is reduced, early recovery can be achieved, the comprehensive recovery rate of copper oxide is increased, meanwhile, release of copper ions in the ore grinding process is reduced, and the adverse effect on follow-up copper sulfide flotation is relieved. The efficient copper oxide vulcanizing agent is composed of sodium sulfide and sodium pyrosulfite, the stability of a film in the vulcanizing process is enhanced, meanwhile, the inhibition effect on pyrite is enhanced, and the flotation separation efficiency of copper oxide is improved. In addition, by adopting an efficient reagent and precise regulation and control, copper oxide concentrate is directly obtained through open circuit of copper oxide roughing and enhanced scavenging concentrate, and the copper metal falling loss caused by closed cycle is reduced.

The invention discloses a low-energy-consumption maltol production method and application, and belongs to the technical field of maltol production.The production method is characterized in that a cyclone dust collector is additionally arranged on the basis of an original bag-type dust collector, and the cyclone dust collector is connected with the bag-type dust collector through an air inducing pipeline. A traditional drying mode is broken through, waste steam in the previous drying process is subjected to hot air recovery, it can be guaranteed that the normal drying process is completed, energy consumption is reduced, the production efficiency is further improved, the production cost is saved, residual dust is effectively recovered, the influence of environmental odor is reduced, and the environment-friendly benefit is achieved.

The invention belongs to the technical field of aluminum electrolysis waste treatment, and particularly relates to a method for green recovery of aluminum electrolysis waste. The method comprises the following steps: mixing and roasting aluminum electrolysis waste, aluminum-containing waste and sulfuric acid to prepare modified waste; the modified waste is smashed and stirred, and filter residues A and filtrate A are filtered and separated out; removing impurities from the filtrate A to obtain filter residues B and filtrate B; reacting the filtrate B with water-soluble carbonate or phosphate to prepare a lithium product; mixing and roasting the filter residue A, the filter residue B and a silicon-containing substance to generate aluminum oxide and silicon tetrafluoride gas; dissolving the aluminum oxide through hydrochloric acid, and reacting the silicon tetrafluoride gas with an aluminum chloride solution to form silicon tetrachloride gas and aluminum fluoride; the silicon tetrachloride gas is combusted to generate hydrogen chloride gas and silicon dioxide particles, and the hydrogen chloride gas is converted into a hydrochloric acid solution through water absorption. According to the method, recycling of aluminum and lithium resources in the aluminum electrolysis waste is effectively achieved, by-products are converted into valuable chemical substances, and resource recycling is promoted.

The invention discloses a waste crystalline silicon photovoltaic module recovery method based on pyrolysis and dense medium separation, which effectively removes organic matters such as ethylene-vinyl acetate (EVA), backboards and the like in a photovoltaic module through pyrolysis, and utilizes the density difference of silicon wafers, glass and solder strips in the pyrolyzed waste photovoltaic module to accurately blend different dense media to recover the photovoltaic module. The suspension liquid with different density gradients is formed, and efficient separation of the silicon wafer, the glass and the welding strip is achieved. And heavy medium residues on the surface of the material are further removed through a wet sieve, and finally the pure recycled material is obtained. According to the method, the recovery efficiency of the silicon wafers, the glass and the welding strips is ensured to exceed 99%, and the utilization efficiency and the resource recovery level of valuable materials are remarkably improved. According to the technical scheme, the technological process is simple and efficient in design, the recovery treatment cost is greatly reduced, and environment friendliness is achieved.