140results about How to "Large amount of processing" patented technology

The invention discloses a method for recovering iron and titanium in vanadium titano-magnetite, and relates to the technical field of vanadium titano-magnetite beneficiation. Raw ore is crushed, and then is subjected to roller milling and screening to obtain oversize and undersize products; undersize products are subjected to weak magnetic pre-selection, tailings obtained after weak magnetic pre-selection and strong magnetic pre-selection are subjected to strong magnetic pre-selection, concentrate obtained after weak magnetic pre-selection and strong magnetic pre-selection are sequentially subjected to first-stage grinding, first-stage weak magnetic separation, second-stage grinding, second-stage weak magnetic separation and second-stage weak magnetic concentration, final iron ore concentrate is obtained, the obtained tailings are combined into iron separation tailings, then the iron separation tailings are subjected to titanium separation grinding, medium magnetic iron removal and strong magnetic roughing, and iron separation tailings are obtained. And tailings obtained after strong magnetic roughing are subjected to strong magnetic scavenging, concentrates obtained after strong magnetic roughing and strong magnetic scavenging are subjected to gravity roughing and gravity concentration, and final titanium concentrates are obtained. By adopting conventional crushing, high-pressure roller grinding, magnetic separation, pre-selection and tailing discarding, the subsequent ore grinding and selecting cost can be effectively reduced, the iron and titanium grades of the ore entering the grinding process are improved, high efficiency and energy conservation are achieved, and the ore dressing efficiency is improved.

The invention discloses a pre-concentration and tailing discarding process for vanadium titano-magnetite, and relates to the technical field of vanadium titano-magnetite beneficiation, and the pre-concentration and tailing discarding process comprises the following steps: raw ore is subjected to crushing operation to obtain a crushed product, and the crushed product is fed into high-pressure roller grinding operation to obtain a high-pressure roller grinding product; the high-pressure roller-milled product is subjected to screening operation, and an oversize product with the large particle size and an undersize product with the small particle size are obtained; the undersize products are subjected to first weak magnetic pre-concentration operation, tailings obtained through the first weak magnetic pre-concentration operation are subjected to first strong magnetic pre-concentration operation, concentrate obtained through the first weak magnetic pre-concentration operation and concentrate obtained through the first strong magnetic pre-concentration operation are combined into final pre-concentration concentrate, and the tailings obtained through the first strong magnetic pre-concentration operation serve as one part of final tailings; the oversize products are subjected to second weak magnetic pre-concentration operation, tailings obtained through the second weak magnetic pre-concentration operation are subjected to second strong magnetic pre-concentration operation, and concentrate obtained through the second weak magnetic pre-concentration operation and concentrate obtained through the second strong magnetic pre-concentration operation are combined and then returned to the high-pressure roller grinding operation; tailings obtained by the second strong magnetic pre-separation operation are used as one part of final tailings. According to the method, crushing, high-pressure roller grinding and screening are adopted, oversize and undersize products obtained through screening are subjected to magnetic separation, pre-concentration and tailing discarding, oversize product pre-concentration concentrate is returned to the high-pressure roller grinding, the subsequent ore grinding and selecting cost is effectively reduced, the iron and titanium grades of subsequent ore entering the grinding process are improved, the load capacity of the high-pressure roller grinding machine can be reduced, and energy consumption and production cost are reduced.

The invention belongs to flow industry pressure coupling devices, and discloses a switching valve with a pressure pre-balancing function and a pressure coupling device.The switching valve comprises a valve body with a plurality of connecting ports, the valve body is provided with a driving end valve component, and the driving end valve component comprises a driving end valve deck, a driving rod, a driving end valve plate, a driving end valve seat and a nut; a basic unit of the pressure coupling device is at least two single-cylinder devices arranged side by side, and each single-cylinder device is mainly composed of a driving end module, a response end module and a pressure exchange cylinder connected between the driving end module and the response end module. Wherein the driving end module comprises a four-way switching valve and a three-way switching valve which are provided with driving end valve components, and the response end module comprises a four-way check valve and a three-way check valve which are provided with response end valve components. The device has the characteristics of simple pressure pre-balancing structure, low driving energy consumption, good pressure difference self-tightening sealing effect, compact overall structure, convenience in installation and maintenance and the like.

The invention discloses photocuring 3D printing metal slurry and a preparation method thereof.The photocuring 3D printing metal slurry is prepared from, by mass, 30%-77% of organic monomers, 0.001%-20% of dispersing agents, 0.1%-6% of photoinitiators and 10%-67% of composite powder; the composite powder comprises an organic shell and a metal core. The compatibility of an organic matter shell and an organic monomer of the composite powder in the slurry is better, and the chemical interaction force of the surface is larger, so that the dispersion of the composite powder in an organic monomer solution is promoted, and good stability is provided for the photocuring slurry; the refractive index of the organic matter serving as the shell is close to the refractive index of the organic monomer solution, the refractive index difference between the powder and the organic monomer solution is reduced, the curing thickness of the slurry is greatly increased, and the stable photopolymerization slurry with the good curing characteristic is obtained.

The invention provides a salt-melting pre-coated ore particle suspension roasting system and method for clay type lithium ore, and belongs to the field of lithium ore smelting and extraction. The system comprises a mixer, a preheating furnace, a dispersion dryer, a first cyclone separator, a cyclone preheater, a suspension roaster, a second cyclone separator, a cyclone cooler, an air cooler, a cloth bag or an electric precipitator, a tail gas treatment device, an induced draft fan, a first spiral feeder and a second spiral feeder. The method comprises the following steps: uniformly stirring and mixing clay type lithium ore powder with mixed salt of alkali metal sulfate and nitrate; preheating at the temperature of 300-400 DEG C to obtain salt melting pre-coated mineral powder; the method comprises the following steps: dispersing and drying mineral powder, feeding into a cyclone preheater, preheating at 500-600 DEG C, feeding into a suspension roaster, and performing suspension roasting at 600-700 DEG C; and after gas-solid separation, cooling to obtain roasted clinker. According to the method, the advantages of salt-adding roasting of the clay type lithium ore can be played, suspension fluidized roasting after salt mixing of the lithium ore can be achieved, and efficient selective leaching of low-grade lithium in the clay lithium ore is facilitated.

The invention provides a comprehensive recovery method for tantalum, niobium and tin in lepidolite flotation tailings, and relates to the technical field of comprehensive utilization of resources. The method comprises the following steps: firstly, grading the lepidolite tailings, and carrying out flotation on the lepidolite tailings of which the particle size is less than 0.038 mm to obtain low-grade tantalum-niobium-tin concentrate; carrying out gravity separation, centrifugal separation and shaking table separation on the fraction of + 0.038-0.15 mm to obtain high-grade tantalum-niobium-tin concentrate; and after the particle size larger than 0.15 mm is subjected to reselection, ore grinding is conducted again, and ore grinding products are returned to the initial grading operation. The method is environment-friendly in process, the lepidolite flotation tailings can be effectively utilized, and the problem that the recovery rate of tantalum, niobium and tin is low is solved.

The invention provides a high-efficiency low-consumption chain plate type fuel gas heat radiation indirect pyrolysis system, which belongs to the technical field of solid hazardous waste disposal, and comprises a nitrogen-filled low-pressure chain plate type pyrolysis subsystem I, a self-preheating type fuel gas heat radiation heat exchange subsystem II, a pyrolysis gas fractional condensation recycling subsystem III and an intelligent comprehensive control subsystem IV, the low-pressure chain plate type pyrolysis subsystem I of nitrogen exchanges heat with a high-temperature radiation section of the self-preheating type fuel gas heat radiation heat exchange subsystem II in the pyrolysis furnace; a low-pressure chain plate type pyrolysis subsystem I for combusting high-temperature tail gas and nitrogen of a self-preheating type fuel gas heat radiation heat exchange subsystem II exchanges heat with a discharging conveyor at a feeding conveying device or at the same time; pyrolysis flue gas generated in a pyrolysis furnace of the low-pressure chain plate type pyrolysis subsystem I of nitrogen is introduced into a pyrolysis gas fractional condensation recycling subsystem III for treatment. The device has the advantages of high yield, low energy consumption, high thermal efficiency and capability of recycling pyrolysis oil and recycling pyrolysis non-condensable gas.

The utility model relates to a treatment device for wet oxidation produced water of caprolactam wastewater. The treatment device comprises a produced water collection tank, a membrane filtration device, an electrolysis device, a macroporous adsorption resin column and a chelating adsorption resin column, a water outlet of the produced water collecting tank is connected with a water inlet of the membrane filtering device; a concentrated water outlet of the membrane filtration device is connected with a water inlet of the electrolysis device; a water outlet of the electrolysis device is connected with a lower water inlet of the macroporous resin column; the upper water outlet of the macroporous resin column is connected with the lower water inlet of the chelating resin column. The device disclosed by the utility model is simple in structure, large in treatment capacity, high in removal rate of COD (Chemical Oxygen Demand), environment-friendly, safe, reliable, low in cost and suitable for industrial production, and catalyst metal ions and ammonium sulfate are recycled, and no additional by-products and three wastes are generated.

The invention relates to the technical field of precious metal recovery, in particular to a method for rapidly preparing chloroiridic acid from acidic iridium-containing waste liquid, which comprises the following steps: preparing chloroiridic acid by adopting the processes of heating hydrolysis, oxidation precipitation, reduction dissolution, sulfuration impurity removal, oxidation precipitation and aqua regia dissolution. The process of recovering iridium from the iridium-containing solution and preparing chloroiridic acid is simplified, the recovery process is short, the operability is high, the waste liquid treatment amount is large, the auxiliary material consumption is low, the loss of iridium is reduced, and the recovery efficiency is remarkably improved.

The invention discloses a method for extracting cesium from salt lake brine. The method comprises the following steps: step 1, carrying out saponification reaction, and centrifugally standing for layering; step 2, adjusting the pH value of the salt lake brine, and putting the salt lake brine into a reaction container for extraction; step 3, washing until the concentration of the organic solution containing the cesium element is less than 0.01 g / L; step 4, carrying out back extraction; and 5, impurity removal is conducted on a cesium-containing reverse extraction phase obtained after reverse extraction. The method has the advantages that the salt lake brine is extracted through the saponified organic phase, the alkali liquor consumption is very small and can be recycled, meanwhile, addition of a large amount of strongly alkaline substances into the organic phase is avoided, environment pollution caused by generation of a large amount of waste alkali liquor is avoided, the production cost and the treatment cost are reduced, the treatment capacity is large, the process and equipment are simple, investment is small, and the method is suitable for industrial production. And continuous production is easy to realize.

The utility model belongs to the technical field of annular furnace smelting, and relates to a system for preparing a novel furnace material by adopting an ultra-thick material layer, which comprises an annular heating furnace and a flue gas circulation subsystem, and the annular heating furnace is sequentially divided into a forced air drying section, an air draft preheating section, a reaction section, a first-stage cooling section, a second-stage cooling section and a discharging section according to the rotating direction; the flue gas circulation subsystem comprises a drying section fan cover, a preheating section fan cover, a reaction section fan cover, a cooling section fan cover, a drying section flue gas dust collection bin and a preheating section flue gas dust collection bin installed below the air draft preheating section. The reaction section flue gas dust collecting bin is mounted below the reaction section; the cooling section flue gas dust collecting bin is mounted below the primary cooling section and the secondary cooling section; a cooling medium conveying pipeline is connected to the bottom of the cooling section flue gas dust collecting bin, the cooling section fan cover is connected with the drying section flue gas dust collecting bin, the reaction section flue gas dust collecting bin is connected with the preheating section fan cover and the reaction section fan cover, and the drying section fan cover and the preheating section flue gas dust collecting bin are connected with a chimney.

The invention discloses a high-efficiency chemical deodorization device and method, comprising: an absorption liquid storage tank, an air inlet of the absorption liquid storage tank is connected to a reaction tube, an air outlet of the absorption liquid storage tank is connected to a demister, a liquid spraying pipe, the lower end of the liquid spraying pipe is connected to the reaction tube, the upper end of the liquid spraying pipe is connected to an external fan, a circulation mechanism, the extraction end of the circulation mechanism is connected to the liquid outlet of the absorption liquid storage tank, and the discharge end of the circulation mechanism is connected to the liquid spraying pipe. The high-efficiency chemical deodorization device adopts gas-liquid co-current chemical technology, the device has a large processing capacity, a small pressure drop, and no liquid flooding phenomenon occurs, and can significantly reduce the tower diameter and tower height, thereby reducing the investment cost of the device.

The utility model discloses a grading sand screening machine for constructional engineering, which relates to the technical field of constructional engineering and comprises a casing and a PLC (programmable logic controller), and the inside of the casing is divided into a feeding bin, a primary screening bin, a secondary screening bin and a collecting bin by partition plates; the feeding bin is communicated with the outside through the feeding port, the other end of the feeding bin is communicated with an inlet of the first-stage screening bin, an outlet of the first-stage screening bin is communicated with the first discharging port, the first-stage screening bin is communicated with the second-stage screening bin below the first-stage screening bin through the screening drum, and an outlet of the second-stage screening bin is communicated with the second discharging port. The second-stage screening bin communicates with a collecting bin below the second-stage screening bin through a screen, an outlet of the collecting bin communicates with the third discharging port, and the PLC is arranged on the front face of the machine shell. The intelligent sand screening machine is high in intelligent degree, the multiple screening bins are arranged, impurities in sand are removed, and the sand is collected in a separated mode according to different particle sizes; the whole device is of a closed structure, raised dust generated during working is effectively reduced, the environment can be protected, and harm to health of constructors is reduced.

The invention discloses a method for separating squalene from vegetable oil deodorized distillate, which comprises the following steps: mixing the vegetable oil deodorized distillate containing squalene with a first solvent to obtain a raw material solution, and carrying out fractional extraction on the raw material solution by using a second solvent as an extraction agent and a third solvent as a washing agent, the first solvent is selected from one or more of non-polar solvents and weak polar solvents, the second solvent is selected from one or more of polar solvents, and the third solvent is selected from one or more of non-polar solvents and weak polar solvents. The fractional extraction method adopted by the invention has the advantages of high treatment capacity, high product purity and recovery rate, low energy consumption and cost, easiness in amplification and the like, and is suitable for industrial production.

The utility model relates to a movable coal returning belt conveyor and a coal returning system, the movable coal returning belt conveyor comprises a rack, conveying rollers are arranged at the two ends of the rack, and a conveying belt is arranged between the conveying rollers; the machine frame is connected with a driving support, a driving roller and a turnabout roller are arranged on the driving support, and the conveying belt passes through the conveying roller, the turnabout roller and the driving roller in a closed loop mode. The driving support is arranged in the middle of the machine frame, and walking wheels are arranged at the bottom of the driving support. By arranging the walking wheels on the movable coal return belt conveyor, the belt conveyor can be flexibly transferred in a movable mode, and therefore the belt conveyor can be flexibly transferred to a place where operation is needed. Compared with temporary installation of a traditional coal return scraper, the ground piled coal can be effectively and continuously returned to the washing system, and the operation efficiency is improved with a large handling capacity.

The utility model discloses a kind of automatic post-treatment equipment of bolt hot galvanizing, belong to metal surface treatment technical field, it includes the mechanical arm for grabbing work, centrifuge and truss manipulator for throwing away excess zinc liquid, the mechanical arm and centrifuge are all located truss manipulator side, the mechanical arm is located centrifuge rear, cooling pool, passivation pool and blanking conveyor are respectively installed below the truss manipulator, and the passivation pool is located cooling pool and blanking conveyor adjacent side, wherein, it further includes zinc plating basket for containing workpiece, the zinc plating basket outer diameter is less than centrifuge inner diameter, in the utility model, adopt mechanical arm, truss manipulator and blanking conveyor and other automation equipment, the seamless docking of bolt hot galvanizing post-treatment process equipment is realized, to effectively improve the automation degree of device whole, to greatly reduce manual operation, greatly avoid the situation of low production efficiency and low capacity caused by manual operation.

The invention relates to the technical field of water purification filter elements, and discloses a special large-flow combined filter element for water purification equipment, which comprises a water inlet pipeline, one side of the water inlet pipeline is fixedly and hermetically connected with a filter pipeline, one side of the filter pipeline is fixedly and hermetically connected with a transfer pipe, one side of the transfer pipe is fixedly and hermetically connected with a water through groove, and the water through groove is fixedly and hermetically connected with the filter pipeline. The other end of the water passing groove is fixedly and hermetically connected with a water outlet pipeline; a first sealing mechanism is arranged in the water inlet pipeline and comprises a built-in ring; a filter element is movably mounted in the filter pipeline; a sterilization device is movably inserted into the top of the water through groove; and a monitoring device is movably mounted at the top of the water outlet pipeline. By arranging the filter element, the sterilization device and the monitoring device, water flow can be preliminarily filtered and sterilized conveniently, water quality monitoring is carried out after sterilization, and meanwhile the monitoring device is provided with a wireless communication module, so that a monitoring result can be remotely transmitted to a user side conveniently.

The present invention discloses a conical high-efficiency zeolite rotor adsorption concentration purification device. It includes a rotor shell, an adsorption gas inlet is arranged on the front side of the rotor shell, an adsorption gas outlet is arranged on the rear side of the rotor shell, a guide plate near the adsorption gas inlet is arranged in the rotor shell, a zeolite rotor near the adsorption gas outlet is arranged in the rotor shell, a desorption gas inlet is arranged at the adsorption gas outlet, and a desorption gas outlet is arranged on the rotor shell. The high-temperature gas entering from the desorption gas inlet can desorb the organic matter adsorbed on the zeolite rotor and discharge it through the desorption gas outlet. The beneficial effect is: the airflow can be evenly distributed and dispersed, which greatly improves the overall adsorption efficiency and stability. In addition to being able to reduce the volume of the entire equipment and effectively reduce the floor space, it also greatly increases the gas processing capacity. The modular structural design of the zeolite rotor is convenient for production, transportation and installation. The adsorption and desorption structure formed reduces the difficulty of processing and assembly, and reduces the cost.

The invention discloses a method for synchronously recovering lithium, copper, cobalt, nickel and manganese in a waste ternary lithium battery, which comprises the following steps of: carrying out reduction smelting on the waste ternary lithium battery in a smelting furnace, adding calcium chloride, limestone and quartz stone in the reduction smelting process for slagging, and reducing copper, cobalt and nickel elements in a battery material into an alloy; lithium and manganese elements are converted into volatile lithium chloride and manganese chloride in the smelting process, the volatile lithium chloride and manganese chloride enter a gas phase to be collected, and then lithium carbonate and manganese hydroxide are prepared through a water washing-sodium hydroxide precipitation-sodium carbonate precipitation method. According to the method, synchronous recovery of lithium, nickel, cobalt, copper and manganese is achieved, and compared with an existing wet treatment process, the treatment capacity is larger, pretreatment is simpler, the recovery technological process is shortened, and the economic cost is reduced.

The invention discloses a top-blown furnace and a smelting method adopting the top-blown furnace. The top-blown furnace comprises a top-blown furnace body and a top-blown furnace cover, wherein a feeding hole is formed in the side part of the top-blown furnace body; the blowing device comprises a blowing device body, a containing space is defined in the blowing device body, a first discharging opening is formed in the top of the blowing device body, a first air inlet is formed in the side portion of the blowing device body, a first discharging opening is formed in the bottom of the blowing device body, and a control valve is arranged at the first discharging opening; and the discharging pipeline is located below the blowing device body, the side wall of the discharging pipeline is provided with a second discharging opening, the second discharging opening is connected with the first discharging opening, one end of the discharging pipeline is provided with a second discharging opening, and the second discharging opening is connected with the feeding opening. According to the top-blown furnace, the material handling capacity can be increased, the direct recovery rate of products is improved, and the dust collection amount is reduced.

The invention provides a method for separating alpha-ketoglutaric acid and pyruvic acid, which comprises the following steps: (1) carrying out multi-stage extraction on a raw material solution containing alpha-ketoglutaric acid and pyruvic acid to obtain extract liquor and raffinate; wherein an extracting agent for multi-stage extraction comprises a hydrophobic deep-eutectic solvent; (2) carrying out reverse extraction on the extract liquor, acidizing an extract phase obtained by reverse extraction, and crystallizing to obtain alpha-ketoglutaric acid; and (3) concentrating and drying the raffinate to obtain pyruvic acid. The method provided by the invention has the advantages of high selectivity and simple process, and is suitable for industrial production.

The invention discloses modified chickpea starch and a preparation method and application thereof, and belongs to the technical field of food processing.The modified chickpea starch is obtained by adding oat beta glucan into chickpea starch, then conducting pretreatment on the chickpea starch, conducting extrusion treatment on the chickpea starch through a double-screw extruder, and cooling, drying and smashing an extruded sample; wherein the addition amount of the oat beta glucan is 3 to 15 percent; the temperature of the extrusion treatment is 80-120 DEG C. The chickpea starch is subjected to compound modification by adopting a twin-screw extrusion technology in cooperation with oat beta glucan, and a starch semi-crystalline layer is deeply destroyed to realize deep regulation and control of a multi-scale structure; meanwhile, the oat beta glucan and the starch form a hydrogen bond network, so that the problem of excessive modification of chemical modification is avoided, and the thermal stability, the shear resistance and the aging resistance of the starch are remarkably improved; no chemical reagent participates in the whole process, no chemical residue risk exists, and the method has the advantages of continuous production, large treatment capacity, low energy consumption and the like.

The invention provides a purification method of empagliflozin. The method comprises the following steps: (1) extracting raw material liquid containing empagliflozin and impurities by using an extracting agent to obtain extract liquid containing empagliflozin; the impurities comprise one or more of an isomer, an ester and a hydrolysate of empagliflozin, the solvent in the raw material liquid is selected from a non-polar solvent and / or a weakly polar solvent, and the extraction agent comprises an ionic liquid or a mixture of the ionic liquid and a polar solvent; and (2) carrying out back extraction and concentration on the extract liquor containing empagliflozin to obtain empagliflozin. The method has the advantages of high separation efficiency, low solvent consumption, low production cost, safety, environment friendliness, easiness in industrial production and the like.

The utility model relates to the technical field of anti-blocking of receiving hoppers, in particular to an anti-blocking receiving hopper which comprises a receiving hopper, a blanking hopper and a transmission cutting mechanism, the transmission cutting mechanism is arranged in the blanking hopper and comprises a cutting disc and a cutting rotating shaft, the cutting rotating shaft penetrates through the blanking hopper, and the cutting disc is arranged on the cutting rotating shaft. A plurality of cutting discs are obliquely arranged on the cutting rotating shaft in the blanking hopper, a cutting angle is formed between the cutting discs and the cutting rotating shaft, the plurality of cutting discs are uniformly distributed on the cutting rotating shaft in the blanking hopper at equal intervals, and the cutting discs between two adjacent cutting rotating shafts are arranged at intervals in a crossed manner; the material receiving hopper has the advantages that materials are prevented from being blocked at the bottom of the material receiving hopper, the service life of the material receiving hopper and related equipment is prolonged, the maintenance and replacement cost of the equipment is reduced, the production downtime caused by equipment failures can be shortened, and the reliability and stability of the equipment are improved.

The utility model discloses a kind of inclined feeding mechanism and three-layer annular sorting equipment using the mechanism, comprising: frame, the frame has feeding surface and lifting drive mechanism;Feeding platform, the feeding platform is slidably arranged on the frame, and is connected the lifting drive mechanism, conveying assembly is equipped on the feeding platform, the included angle between the conveying direction of the conveying assembly and the feeding surface is non-right angle.Compared with prior art, the utility model can effectively improve the sorting efficiency of sorting equipment.

The utility model relates to a kind of vibration screening structure for polyethylene chemical crosslinking granule, comprising: base frame;Movable rack, pivotally connected to the base frame;Mounting frame, screen, vibration generator, screen is installed on mounting frame, mounting frame is connected with movable rack, mounting frame is located above movable rack;The vibration generator is installed on the mounting frame;First position adjusting part, second position adjusting part, one end of the first position adjusting part is installed on the movable rack, one end of the second position adjusting part is installed on the movable rack, first through hole of preset quantity is provided on the first position adjusting part, and the first through hole is through the first position adjusting part;Second through hole of preset quantity is provided on the second position adjusting part, and the second through hole is through the second position adjusting part;First bolt, second bolt, the first bolt and the second bolt are set on the movable rack.

The invention discloses a modularized plasma activated water preparation device and method.The device comprises a water tank, the water tank is provided with a bottom wall and a side wall, an interlayer space defined by an inner side wall and an outer side wall is arranged in the side wall and serves as a gas-liquid mixing area, a containing cavity is defined by the bottom wall and the inner side wall, and one part of the containing cavity serves as a cooling water area; the interlayer space is provided with a water inlet hole and a water outlet hole; the independent air chambers are located below the cooling water area in the containing cavity, the top walls of the air chambers are provided with air inlet holes externally connected with an air pump, and the side walls of the air chambers are provided with a plurality of small air outlet holes communicating the air chambers with the interlayer space; the electrode assemblies comprise a plurality of medium pipes arranged in parallel and inner wall electrodes correspondingly arranged in the medium pipes in a penetrating mode, the inner wall electrodes in the adjacent medium pipes serve as high-voltage electrodes and grounding electrodes respectively, and the medium pipes penetrate through the corresponding air chambers and the water tank in a sealed mode. The problems that a traditional preparation device is unstable in discharge, low in plasma activated water preparation efficiency and the like are solved.

The invention discloses a water conservancy knowledge base and intelligent question and answer construction method based on a large model and RAG, and the method comprises the steps: 1, combing a water conservancy knowledge system, and sorting water conservancy professional documents and data as materials of the knowledge base; step 2, constructing a water conservancy knowledge library management system through a J2EE system, a B / S architecture and a distributed object storage system; step 3, based on the RAG technology, forming different knowledge bases according to the sorted knowledge classification and confidentiality security level of the water conservancy industry, and establishing a water conservancy knowledge intelligent question-answering system on the knowledge bases; 4, performing extended application on the basis of the constructed water conservancy knowledge intelligent question-answering system; the problems that in the prior art, due to the fact that unstructured data processing is weak when a water conservancy knowledge base is constructed, a large number of image-text mixed documents such as PDF and PPT cannot be effectively utilized, and the recall rate and the accuracy rate are not high are solved.

An exemplary method of packaging a substrate may include rotationally aligning a substrate to a predetermined angular position. A method may include transferring a substrate to a metering station. A method may include measuring a topology of a substrate at a metering station. The method may include applying a first suction force to the substrate to flatten the substrate. A method may include generating a mapping of a die pattern on an exposed surface of a substrate. The method may include transferring a substrate to a printing station. The method may include applying a second suction force to the substrate to flatten the substrate against a surface of the printing station. The method may include adjusting a printing pattern based on a mapping of die patterns. The method may include printing a printing pattern on an exposed surface of a substrate.

This invention relates to a method for enhanced cascade separation and resource utilization of calcium-free roasted chromium slag through reducing alkaline roasting. The specific steps are as follows: Calcium-free roasted chromium slag, a reducing agent, and an alkaline reagent are mixed to obtain a chromium slag mixture; the chromium slag mixture is placed at a first temperature and held for a first time under an inert atmosphere, causing the iron oxides in the chromium slag mixture to be reduced, and the aluminum and chromium oxides to be sodium-treated, while inhibiting the reduction of chromium oxides, resulting in a reduced chromium slag mixture; the reduced chromium slag mixture is filtered to obtain filter residue and an aluminum-enriched filtrate, which can be used for alumina production and the recovery of the alkaline reagent; under an inert atmosphere, the filter residue is placed at a second temperature and held for a second time. Due to the separation of aluminum in the filter residue, metallic iron can be efficiently separated by melting, and chromium can be efficiently enriched in the molten residue. This invention can efficiently achieve the cascade resource utilization of iron, chromium, and aluminum components in calcium-free roasted chromium slag.