38results about How to "Large particles" patented technology

The invention relates to a surface treatment method of rolled copper foil. The surface treatment method comprises the steps of degreasing, electrochemical corrosion and roughening. In the electrochemical step, the rolled copper foil serves as an anode, electrochemical corrosion treatment is conducted on the copper foil in an acid pretreatment solution, the defects of surface rolling lines, peeling and the like are removed, and the copper foil surface which is flat macroscopically and rough microcosmically is obtained. In the coarsening step, an additive is added into a coarsening solution, and fine copper particles are electroplated on the surface of the copper foil, so that the performance requirements of low roughness and high stripping resistance of the copper foil are met, and the use requirements of the high-frequency circuit board are met.

The invention relates to the technical field of lithium ion battery positive electrode materials, in particular to a composite phosphate positive electrode material and a preparation method and application thereof. The provided composite phosphate positive electrode material comprises a phosphate positive electrode material core and a carbon coating layer, the particle size of the composite phosphate positive electrode material is in normal distribution, the thickness of the carbon coating layer is 2.0-3.0 nm, and the variance is 0.01-0.30. The obtained finished product is relatively large in particle size and uniform in particle size, and the compaction density is remarkably improved; moreover, the surface of the core material is uniformly coated with the carbon coating layer, and the thickness of the carbon coating layer is moderate, so that not only can the electronic conductivity of the positive electrode material be improved, but also the discharge capacity, coulombic efficiency and other electrochemical properties of the composite phosphate positive electrode material can be improved.

The invention is applicable to the technical field of catalytic materials and degradation, and provides an ultrasonic enhanced red mud-based catalytic material degradation method and application, the method comprises the following steps: step 1, crushing red mud, drying, grinding the dried sample by a ball mill, and sieving to obtain a sample A; 2, biomass is dried and ground into powder, and an undersize sample B is obtained after sieving; 3, the sample A and the sample B are subjected to ball-milling mixing according to a certain proportion, the mixed sample is placed in a tubular furnace to be subjected to high-temperature roasting, and the red mud-based catalytic material is obtained after cooling; 4, the red mud-based catalytic material is used for degrading pollutants in sewage under visible light, and the degradation process is promoted through external ultrasound. According to the method, recycling and reusing are facilitated, efficient secondary utilization of the waste red mud and agricultural and forestry waste is achieved, and the environmental protection target of treating waste with waste is truly achieved.

The invention provides prebiotic instant granules as well as a preparation method and application thereof, and belongs to the technical field of prebiotic instant granule processing. The preparation method of the prebiotic instant granules comprises the following steps: weighing the resistant dextrin, the xylooligosaccharide and the fructo-oligosaccharide, and mixing the resistant dextrin, the xylooligosaccharide and the fructo-oligosaccharide with 45-65% by volume of alcohol to obtain an adhesive; weighing resistant dextrin, xylooligosaccharide and fructo-oligosaccharide to obtain a mixed material, and adding an adhesive accounting for 4-13% of the weight of the mixed material to prepare particles; and drying the granules to obtain the prebiotic instant granules. The prebiotic instant granules obtained by the preparation method disclosed by the invention have the advantages of high dissolving speed, no caking, no sticking to teeth, no alcohol taste, mellow taste, large granules, fluffiness, uniform granules and good fluidity.

The invention relates to the technical field of preparation of rare earth compounds, in particular to a preparation method of low-chlorine cerous carbonate. The preparation method comprises the following steps: uniformly mixing a monocarboxyl-containing substance with a cerium chloride solution, adding the mixture and an ammonium bicarbonate solution into a base solution, and reacting to obtain the low-chlorine cerium carbonate. The low-chlorine rare earth carbonate is directly prepared in a high-concentration chlorination system by adopting a simple liquid phase precipitation method; the preparation method is simple in process, stable in product quality, capable of remarkably reducing the use amount of washing water and suitable for industrial production, and is an important method for preparing the high-purity rare earth product precursor.

The utility model relates to the technical field of blast furnace dust removal equipment, and discloses a blast furnace stokehole dust removal pipeline convenient to clean, which comprises a blast furnace tower, a dust discharge pipeline communicated with the top of the blast furnace tower, and a dust removal tower communicated with the other end of the dust discharge pipeline, a dust removal mechanism is mounted in the dust removal tower, a collection hopper is mounted at the bottom of the dust removal tower, a flue is mounted on one side of the top of the dust removal tower, the flue is communicated with the dust removal tower, a dust collection box is mounted at the other end of the flue, and the flue is communicated with the dust collection box; according to the utility model, when dust is collected at one place, dust particles are enlarged and wetted by adding water, and the dust is easy to clean after redundant water is filtered out through drainage; and meanwhile, secondary pollution to the environment is avoided, when wet dust is recycled by workers, the dust is not prone to being attached to the inner wall of equipment or a pipeline, and therefore cleaning work becomes simpler and more efficient.

The utility model discloses a spraying system of a spraying tower, which relates to the waste gas treatment technology, and adopts the technical scheme that the spraying system comprises a tower body, a spraying pipe and a nozzle, the spraying pipe comprises a main pipe and a branch pipe, the nozzle is rotatably connected to the branch pipe, a rotating piece is arranged in the nozzle, and the nozzle is provided with an atomizing opening and a liquid flow opening. The spray head starts to rotate under the action of the rotating part, the treatment liquid in the spray head is sprayed out from the atomization opening and the liquid flow opening under the action of liquid pressure, the treatment liquid sprayed out from the liquid flow opening is large in particle diameter and can effectively combine pollutants with large diameters in waste gas, the treatment liquid sprayed out from the atomization opening is small in particle diameter, and the pollutants can be effectively combined with the pollutants with large diameters in the waste gas. The spray tower is simple in structure, large in dispersion area and longer in hang time, and can be fully combined with pollutants with smaller diameters in waste gas, and meanwhile, as the rotation of the spray head can provide centrifugal force for the treatment liquid leaving the spray head, the treatment liquid sprayed out of the atomization port and the liquid flow port can have wider coverage area, and the working efficiency of the spray tower is improved.

The utility model discloses a bioretention medium soil preparation system which comprises a gravity concentration device, a sludge plunger pump, a sludge conditioning device, a centrifugal dewatering system, a buffer storage bin, a belt type drying machine, a belt conveying system, a dry material bin and a sludge pelletizer, and an outlet of the gravity concentration device is communicated with an inlet of the sludge conditioning device through the sludge plunger pump. An outlet of the sludge conditioning device is communicated with an inlet of the centrifugal dewatering system, a sludge outlet of the centrifugal dewatering system is communicated with an inlet of the buffer stock bin, an outlet of the buffer stock bin is communicated with an inlet of the belt type drying machine, an outlet of the belt type drying machine is communicated with an inlet of the dry stock bin, and an outlet of the dry stock bin is connected with the sludge granulator. The bioretention medium soil preparation system disclosed by the utility model can effectively remove impurities in sludge water, and bioretention medium soil prepared by the system changes the physical and chemical properties of residual sludge and meets the requirements of resource utilization and deep dehydration; structural arrangement is reasonable, and production cost is low.

The invention discloses a preparation method of a high-rate lithium iron manganese phosphate positive electrode material and a lithium battery, belonging to the technical field of lithium batteries. A double coating layer is formed on the surface of the lithium iron manganese phosphate material by combining the two methods of in-situ coating of lithium cobalt oxide nanoparticles and polyvinyl alcohol / chitosan gel coating. The main coating layer of lithium cobalt oxide can supplement lithium elements to increase the specific capacity, and based on its layered structure, it can inhibit the growth of particles while facilitating the diffusion of lithium ions. Polyvinyl alcohol and chitosan are cross-linked on the surface of the material to form a gel coating to prevent particle agglomeration. Due to the cross-linking to form a network structure, the carbon layer formed by carbonization is continuous and uniform. Based on the action of the double coating layer, the lithium iron manganese phosphate positive electrode material has high-rate performance, high specific capacity and good cycle performance.

The invention discloses automatic production equipment for carbon fiber recycling based on artificial intelligence, and belongs to the technical field of carbon fiber production.The automatic production equipment comprises a box body, a feeding port is formed in the upper surface of the box body, a discharging pipe is installed on the side wall of the box body in a communicating mode, and an inclined plate is fixedly installed on the inner wall of the bottom face of the box body; a protective cover is fixedly mounted on the outer surface of the box body, and a crushing and grinding assembly, a vibrating screen assembly and a vibrating assembly are arranged on the inner wall of the box body; according to the carbon fiber material crushing and grinding device, by arranging the crushing and grinding assembly, a large carbon fiber material is crushed into small blocks, then the small carbon fiber material is further crushed, and on one hand, the situation that when large carbon fibers are crushed, a blade is seriously abraded, and the service life of the device is shortened can be avoided; on the other hand, the crushing efficiency and the crushing quality can be improved through secondary crushing, and therefore the purpose of sufficient crushing is achieved.

The invention relates to a preparation method and application of a binary formula Dai pottery pug. The preparation method comprises the following steps: taking Dai pottery clay in the HongRiver basin, Wuhua soil in the HongRiver county and charcoal dust, and exposing and weathering the Dai pottery clay and the Wuhua soil for at least three months; the mass content of SiO2 in the Dai clay in the HongRiver basin is not less than 50%, the mass content of Al2O3 is not less than 15%, the mass content of Fe2O3 is not less than 10%, and the ignition loss is less than 10%; the content of SiO2 in the Wuhua soil in the Honghe county is 72%-82%, the content of Al2O3 is 9%-12%, and the content of Fe2O3 is 3%-5%; the preparation method comprises the following steps: adding water into the Dai pottery clay and the Wuhua soil according to the mass ratio of the Dai pottery clay to the Wuhua soil to the charcoal powder of (100-120): (40-50): (8-10), fully soaking, then carrying out ball milling, sieving slurry, then adding the charcoal powder, uniformly stirring, squeezing mud, draining, pugging and exhausting. According to the invention, the throwing and compression molding performances of the Dai pottery clay can be improved, the sintering temperature and the compactness and strength of the structure of the Dai pottery clay can be improved, and the burn out rate can be reduced.

The utility model discloses a structure suitable for an open-pit mine roadside safety retaining wall, and relates to the technical field of open-pit mining road roadside retaining wall safety protection, the structure comprises a retaining wall body, the retaining wall body is arranged along one side, close to a cliff, of a roadbed in a full-length mode, and the cross sectional area of the retaining wall body is gradually reduced from bottom to top; the retaining wall body comprises a blasting waste rock coarse aggregate layer, a waste rock gravel fine aggregate layer and a quaternary or carbonaceous slate facing layer, the blasting waste rock coarse aggregate layer is arranged on the roadbed, the blasting waste rock coarse aggregate layer is filled and wrapped with the waste rock gravel fine aggregate layer, and the quaternary or carbonaceous slate facing layer is arranged on the outer side of the waste rock gravel fine aggregate layer. And safety and firmness are achieved, and the safety of personnel and equipment is effectively guaranteed.

The utility model relates to lithium sink mother liquor recycling technical field, specifically disclose a lithium sink mother liquor recycling system, including the lithium sink mother liquor storage tank, neutralization device, filtering equipment, evaporator and centrifugal device connected in proper order through pipeline, the solid phase recovery device is connected to the solid phase outlet of centrifugal device, and the liquid phase recovery device is connected to the liquid phase outlet of centrifugal device, and the neutralization device includes neutralization jar, and the top of neutralization jar is provided with primary lithium sink mother liquor feeding port and sulfuric acid feeding port, and the sulfuric acid feeding port is connected with sulfuric acid storage tank through sulfuric acid pump, and the bottom of primary lithium sink mother liquor feeding port is connected with first spiral dispersion feeding pipe, and the bottom of sulfuric acid feeding port is connected with second spiral dispersion feeding pipe, and the pH monitor is arranged in neutralization jar, and the outside of neutralization jar is provided with temperature control jacket, and the circulating cooling water is circulated in temperature control jacket. The system can reduce the addition of auxiliary materials, reduce energy consumption, improve the resource utilization rate and economic benefit of lithium carbonate production.

The invention discloses a magnetic resin immobilized ionic liquid heteropolyacid catalyst and a preparation method and application thereof.The preparation method comprises the steps that nano Fe3O4, paraformaldehyde and 3-hydroxyl-N, N-dimethylaniline are mixed in an organic solvent for a reaction, and magnetic resin microspheres are obtained through washing, drying and curing; sequentially reacting the obtained magnetic resin microspheres with 1, 3-propane sultone and heteropolyacid to obtain a magnetic resin immobilized ionic liquid heteropolyacid catalyst; alcohol and hydrogen peroxide are used as raw materials, the magnetic resin immobilized ionic liquid heteropolyacid is used as a catalyst, and a reaction is performed in an oil bath at 70-110 DEG C for 0.5-4 h; cooling after the reaction is finished, separating the catalyst through an external magnetic field, washing and drying the catalyst with diethyl ether, directly and repeatedly using the catalyst for the next reaction, and recrystallizing the product to obtain a refined product. The problems that a traditional heteropolyacid catalyst is easily dissolved in a polar solvent in the using process and is difficult to separate, the preparation time of the catalyst is long and the like are solved.

The present invention discloses a water outlet device and a shower head, comprising a shell and a water outlet nozzle, the water outlet nozzle comprising a plurality of water outlet layers, namely a first water outlet layer, a second water outlet layer and a third water outlet layer, the third water outlet layer is located below the second water outlet layer, the first water outlet layer comprises a first water inlet groove and a first water outlet cylinder which are interconnected, the second water outlet layer comprises a second water inlet groove and a second water outlet cylinder which are interconnected, the second water outlet cylinder is sleeved outside the first water outlet cylinder, the first water outlet cylinder can be inserted into the second water outlet cylinder, and the third water outlet layer comprises a third water inlet groove and a third water outlet cylinder which are interconnected. The shower head comprises the water outlet device as described above. By adopting the present invention, multiple layers of water spray patterns can be sprayed at the same water outlet position, with a strong flushing feeling, which not only improves the ornamental value, but also improves the user experience, and has a simple structure and is easy to install.

The utility model discloses a fish meat mincing device for processing fish cake products, which comprises a vertically arranged shell, the lower end of the shell is provided with a slot, a feeding pipe communicated with the slot is fixedly inserted in the position of the outer side wall of the shell close to the top, the upper end of the shell is fixedly connected with a first servo motor, and the lower end of the shell is fixedly connected with a second servo motor. The tail end of an output shaft of the first servo motor downwards penetrates through the shell and extends into the inserting groove, a plurality of spiral blades are fixedly connected to the output shaft of the first servo motor, a plurality of first blades arranged in a triangular mode are fixedly connected to the inner side wall of the inserting groove, and a supporting block is arranged in the inserting groove. The supporting block is located under the tail end of an output shaft of the first servo motor, and a plurality of supporting rods are fixedly connected between the outer side wall of the supporting block and the inner side wall of the inserting groove. Through the arrangement of the blades, the grinding rollers and other mechanisms, multiple mincing operation on fish meat is achieved, and the situation that fish bone particles are too large, and consequently the subsequent production quality is affected is avoided.

The invention relates to the field of recycling of positive electrode materials of waste lithium ion batteries, in particular to a method for removing aluminum from lithium extraction residues through cooperation of inorganic acid and alkali. The method comprises the following steps: 1) roasting the lithium iron phosphate lithium extraction residues to obtain iron phosphorus residues; 2) mixing the iron-phosphorus slag with an alkaline solution and reacting to obtain an alkaline leaching solution and alkaline leaching slag; (3) adjusting the pH value of the alkaline leaching solution and removing aluminum to obtain aluminum-removed liquid 1; 4) mixing the alkaline leaching residues with inorganic acid and reacting to obtain an acid leaching solution; 5) mixing the pickle liquor with an aluminum removal agent and reacting to obtain aluminum removal liquid 2; and 6) mixing the aluminum-removed liquid 1 with the aluminum-removed liquid 2 to obtain a purified iron-phosphorus liquid. The lithium extraction residue inorganic acid-alkali synergistic aluminum removal process provided by the invention realizes deep removal of aluminum impurities, has high iron and phosphorus recovery rates, does not introduce fluorine elements in the whole process flow, and provides a high-quality raw material for regeneration of battery-grade iron phosphate.

The utility model relates to the technical field of fertilizer production, in particular to a crushing device for clear liquid type fertilizer production, which comprises a bearing plate, one end of the upper surface of the bearing plate is fixedly connected with a feeding component, the other end of the upper surface of the bearing plate is fixedly connected with a supporting component, and the middle of the upper surface of the bearing plate is fixedly connected with a collecting component. And a protection assembly is fixedly connected to one end of the supporting assembly, a crushing assembly is fixedly connected to the inner side wall of the protection assembly, and a screening assembly is fixedly connected to the inner side wall of the middle of the protection assembly. Through the arrangement of the bearing plate, the feeding hopper, the conveying belt A and the fixing strip, during use, a worker pours raw materials into one end of the conveying belt A on the upper surface of the feeding hopper, the raw materials are driven to the top end of the protective shell through the fixing strip fixed to the surface of the conveying belt A, and the raw materials fall into the protective shell to be crushed through rolling of the conveying belt A; therefore, the effects that automatic feeding can be achieved, more time and labor are saved, and the labor intensity of workers is relieved are achieved.

The invention relates to the technical field of glucurolactone, in particular to a glucurolactone crystal form and a preparation method thereof.The glucurolactone crystal form has characteristic diffraction peaks when the diffraction angles 2 theta are 17.68 + / -0.02, 18.22 + / -0.02, 18.52 + / -0.02, 19.33 + / -0.02, 21.77 + / -0.02, 26.40 + / -0.02, 26.97 + / -0.02, 29.00 + / -0.02, 29.55 + / -0.02, 31.77 + / -0.02, 36.26 + / -0.02, 37.83 + / -0.02, 38.90 + / -0.02, 39.26 + / -0.02, 40.07 + / -0.02 and 41.12 + / -0.02 through X-ray powder diffraction analysis measured by Cu-K alpha rays, and the glucurolactone crystal form can be used for By optimizing crystallization process conditions, the glucurolactone crystal form with larger particles and better crystal structure is provided, and the actual application requirements are better met.

The application discloses a granulation method of high-density spherical pesticide granules suitable for high-altitude spraying, characterized in that a pesticide raw material is uniformly mixed with a wetting agent, a dispersing agent, a disintegrating agent and a filler, the mixture is crushed by an air flow crusher to obtain a mother powder, the mother powder is sent into a high-speed granulator by a vacuum feeder, water is sprayed into the high-speed granulator at the same time, sugar-coated granulation is carried out, a boiling dryer is added to carry out drying, and the high-density spherical pesticide granules of the application are obtained. The granulation method of the high-density spherical pesticide granules is simple in process, low in equipment investment, and the obtained granules are round and uniform, and the method is convenient for popularization and promotion.

The application discloses a flue gas water-saving and multi-pollutant removal device and a working method thereof, and belongs to the technical field of flue gas water-saving. The device comprises a flue gas inlet pipe, a cylinder and a dehydrated flue gas passage which are sequentially connected. The outer wall of the cylinder is provided with a reinforced radiation cooling coating. A plurality of rows of high-voltage electrode columns and ground electrode columns are alternately arranged in the front section of the flue gas inlet pipe. The dehydrated flue gas passage is externally nested with a condensed water collecting device, and the condensed water collecting device is connected with the cylinder. A plurality of condensed water collecting openings are arranged in the outlet transition section, and the condensed water collecting openings are communicated with the condensed water collecting device. A vibrating string grid is arranged in the dehydrated flue gas passage, and a plurality of drainage holes are arranged on the dehydrated flue gas passage below the vibrating string grid. The device has the advantages of compact structure, small volume and low energy consumption, and can realize low-temperature and high-efficiency recovery of water in flue gas and simultaneous removal of multi-pollutants.

The invention relates to the field of continuous preparation of rare earth compound precipitates, and discloses a continuous preparation method of rare earth compound precipitates, which comprises the following steps: dilution and activation: adding fine crystal mush, rare earth feed liquid and recycled precipitation wastewater into an activation configuration tank through a flow controller, and stirring to obtain a mixed solution; crystal nucleus growth: overflowing into a growth precipitation tank through the mixed solution, then adding an ammonium bicarbonate solution, and performing stirring treatment to obtain crystal nucleus growth slurry; and complete crystallization: enabling the crystal nucleus growth slurry to overflow into a crystallization precipitation tank, then adding the ammonium bicarbonate solution again, and carrying out stirring treatment. The whole continuous precipitation process is divided into the steps of dilution activation, crystal nucleus growth, complete crystallization, standing aging, graded discharging and the like, stage-by-stage overflow is carried out, segmented continuous control is achieved, different reaction stages are controlled in respective single reaction tanks, precise control is achieved through stage-by-stage overflow and segmentation, and the whole reaction process is continuous and controllable.

A method for preparing a binary formula for Dai pottery clay and its application is disclosed. The method involves taking Dai pottery clay from the Honghe River basin, five-colored clay from Honghe County, and charcoal powder. The Dai pottery clay and five-colored clay are sun-dried and weathered for at least three months. The Dai pottery clay from the Honghe River basin has a SiO2 content of not less than 50%, an Al2O3 content of not less than 15%, an Fe2O3 content of not less than 10%, and a loss on ignition of less than 10%. The five-colored clay from Honghe County has a SiO2 content of 72-82%, an Al2O3 content of 9-12%, and an Fe2O3 content of 3-5%. The method involves soaking the Dai pottery clay and five-colored clay in water until fully saturated, then ball-milling them. The slurry is sieved, and then charcoal powder is added. After stirring evenly, the clay is pressed to drain water and then kneaded to remove air. This invention can improve the throwing and molding performance of Dai pottery clay, increase the sintering temperature and the density and strength of its structure, and reduce the burn-off rate.

The utility model relates to the technical field of rotary kilns, in particular to an efficient biomass fuel firing device. According to the technical scheme, the dust collector comprises a frame, a second shell and a first shell, a fixing frame is welded to the top end face of the frame, and a cloth bag dust collector is welded to the side end face of the fixing frame; a first driving mechanism is installed on the side end face of the first shell, and a first rotating shaft is arranged on an output shaft of the first driving mechanism. Ceramic heating pipes are mounted at the two ends of the inner wall of the first shell in an attached mode. A second driving mechanism is installed on the side end face of the second shell, and a second rotating shaft is arranged on an output shaft of the second driving mechanism. Cutting blades are mounted on the rotating shaft II and the rotating shaft I; a feeding pipe is fixedly embedded into the rear end face of the first shell. A filter bag is mounted on the inner wall of the bag collector; and a connecting pipe is fixedly embedded into the top end surface of the bag collector. The rotary kiln biomass fuel firing device meets the requirement for rotary kiln biomass fuel firing, pretreatment can be conducted during firing, and the situation that fuel is directly injected to affect combustion is avoided.

The utility model belongs to the technical field of fine iron powder processing, and particularly relates to a transfer device for fine iron powder processing and upgrading, which comprises a material box, one side of the material box is fixedly connected with a conveying frame, one side of the conveying frame is fixedly connected with a blanking frame, the conveying frame is provided with a conveying and lifting assembly, the bottom of the blanking frame is fixedly connected with a screen, and the screen is fixedly connected with a conveying and lifting assembly. And a recycling box is fixedly connected to one side of the discharging frame, a smashing assembly is arranged on the recycling box, and a transfer trolley is movably arranged at the bottom of the discharging frame. The fine iron powder recycling device is reasonable in structural design, fine iron powder can be lifted and conveyed firstly and then filtered and screened when the fine iron powder is transferred and loaded, fine iron powder particles are smaller, finer, more uniform and consistent during transferring, the purpose of upgrading the fine iron powder is achieved, the large fine iron powder enters the recycling box to be smashed, and the quality of the fine iron powder is improved. Therefore, the particle size of the fine iron powder is reduced, and the fine iron powder is recycled.

The invention discloses a bromine-doped methyl ammonium iodide perovskite X-ray detector and a preparation method thereof, the bromine-doped methyl ammonium iodide perovskite X-ray detector comprises a conductive substrate, a hole transport layer, a bromine-doped methylamino perovskite absorption layer, an electron transport layer, a hole barrier layer and a metal cathode which are sequentially arranged from bottom to top, the bromine-doped methylamino perovskite absorption layer adopts an MAPb (I1-xBrx) 3 material, the hole transport layer is made of a poly [bis (4-phenyl) (2, 4, 6-trimethylphenyl) amine] (PTAA) material, the electron transport layer is made of a C60 material, and the hole blocking layer is made of a 2, 9-dimethyl-4, 7 diphenyl-1, 10-phenanthroline material. A small amount of Br is doped in methyl ammonium iodide, so that the dark current of a device can be effectively reduced, doped perovskite particles are enlarged, the grain boundary defect state density is reduced, relatively long fluorescence lifetime is shown, non-radiative recombination in an absorption layer is reduced, and separation and extraction of photon-generated carriers are increased by designing a matched device structure; the optimized X-ray detector has excellent performance and shows certain advantages in the aspects of device structure and component optimization.

The invention provides a preparation method of oseltamivir phosphate, which comprises the following steps: carrying out a deallylation reaction on a compound II to obtain an oseltamivir free alkali reaction solution, concentrating, dissolving in acetone, and reacting with phosphoric acid to obtain oseltamivir phosphate, the solvent is one or more of 1, 3-cyclohexanedione, 1, 3-cyclohexanedione, 1, 3-cyclopentanedione, Meldrum's acid, 5, 5-dimethyl-4-methyl-1, 3-cyclohexanedione, 1, 3-cyclohexanedione, 1, 3-cyclopentanedione, Meldrum's acid, and 5, 5-dimethyl-4-methyl-1, 3-cyclohexanedione. Compared with the prior art, the method has the advantages that materials with lower cost are used for replacing original expensive reagents to carry out allyl removal reaction, the molecular availability is improved, the cost is greatly reduced, the reaction system is clean, the next-step reaction can be directly carried out without post-treatment, the operation is simple and convenient, the cost advantage is obvious, a salifying system is optimized, crystallization is carried out in a reverse dropwise adding manner, and the yield is high. The obtained oseltamivir phosphate is large in particle, good in fluidity and convenient to prepare into a preparation.

The invention provides a method for removing tobacco wax components in tobacco absolute and atomized liquid. The method comprises the following steps: adding beeswax into an alcoholic solution of tobacco absolute, heating and stirring to dissolve tobacco wax components and beeswax into the alcoholic solution of the tobacco absolute to obtain a mixed solution, standing and settling the mixed solution to separate out the tobacco wax components and beeswax components, and filtering to remove and separate out tobacco wax components and beeswax wax components to obtain the tobacco absolute alcohol solution without the tobacco wax components. In the application, on one hand, the beeswax wax component can adsorb the tobacco wax component during precipitation and then carry the tobacco wax component for precipitation, the precipitated beeswax wax component can be in a sheet shape or a pinniform shape in an alcoholic solution, and the beeswax wax component is large in particle and easy to filter; when beeswax waxy components are filtered, tobacco waxy components adsorbed on the beeswax waxy components can be filtered and removed together, so that the tobacco waxy components in the tobacco absolute are removed.

The utility model discloses a coffee bean grinder cutterhead which comprises an outer cutterhead and an inner cutter head rotationally arranged in the outer cutterhead, a first inner cutter ring and a second inner cutter ring are arranged on the inner wall of the outer cutterhead, a first outer cutter ring, a second outer cutter ring and a chamfering ring are arranged on the outer wall of the inner cutter head, a first containing cavity is formed between the first inner cutter ring and the first outer cutter ring, and a second containing cavity is formed between the second inner cutter ring and the second outer cutter ring. A second containing cavity is formed among the second inner cutter ring, the second outer cutter ring and the chamfering ring, and the first containing cavity is communicated with the second containing cavity. The cutter head of the coffee bean grinder is good in grinding effect, can prevent coffee powder from being blocked at an outlet, and effectively improves the coffee bean grinding and powder discharging efficiency and powder discharging quality.

The invention discloses an adjustable water-retention fertilizing device for Maowu sand land, which comprises an advancing device and an adjusting mechanism, the adjusting mechanism comprises an adjusting frame I and an adjusting frame II, the adjusting frame I and the adjusting frame II are rotatably and slidably arranged on the advancing device, and a sand land ditching mechanism and a fertilizer mixing mechanism are arranged on the adjusting frame I and the adjusting frame II. The adjusting mechanism is used for adjusting the width of the sand ditching mechanism and the width of the fertilizer mixing mechanism, the sand ditching mechanism is rotationally arranged on the first adjusting frame and the second adjusting frame, the sand ditching mechanism is arranged on the side, closer to the advancing device, of the fertilizer mixing mechanism, and the sand ditching mechanism is used for digging furrows in sandy soil; according to the adjustable water-retention fertilization device for the Maosuu sandy land, the problem that in the prior art, when fertilization is carried out on the sandy land, fertilizer is sprayed to the position close to the earth surface or gathered at the bottoms of furrows, and the water-retention and fertilizer-retention capacity of the fertilizer is poor is solved.