1103results about How to "Less impurities" patented technology

The invention relates to a preparation method of a chlorella exosome as well as a product and application of the chlorella exosome, the preparation method comprises the following steps: (1) mixing extremely micro chlorella with a separation buffer solution, and then carrying out wall breaking treatment to obtain a cell breaking solution; (2) centrifuging the cell disruption liquid, and reserving supernate; and (3) filtering the supernate to obtain the chlorella exosome. The preparation method of the chlorella exosome, provided by the invention, is simple in steps and easy to operate, the chlorella raw material and the specific separation buffer solution are subjected to wall breaking treatment, so that active ingredients in the prepared chlorella can be better extracted, the content of protein and polysaccharide in the obtained exosome is higher, and the purity of the exosome is improved. Meanwhile, gradient centrifugation, filter membrane filtration and the like are assisted in the preparation process, so that the prepared exosome is high in purity and less in impurities.

The invention relates to the technical field of barium hydroxide, and discloses a preparation method of barium hydroxide octahydrate. Epoxidized soybean oil and iminodiacetic acid react to obtain a sodium iminodiacetate modified epoxidized soybean oil trapping agent. According to the method, witherite raw ore is used as a raw material, a sodium iminodiacetate modified epoxidized soybean oil trapping agent, an inhibitor and a foaming agent are added for separation and mineral separation, the separation recovery rate of the obtained high-grade witherite reaches 83.7-91.5%, and the grade reaches 57.7-63.8%. The high-grade witherite is used as a barium source, the yield of the prepared barium hydroxide octahydrate reaches 91.0-91.8%, and the purity of the prepared barium hydroxide octahydrate reaches 97.5-98.7%.

The invention discloses nanoscale high-entropy A2B2O7 type oxide ceramic powder and a preparation method of a nano ceramic block of the nanoscale high-entropy A2B2O7 type oxide ceramic powder, and the preparation method comprises the following steps: S1, uniformly dispersing a rare earth element source and a transition metal source in deionized water, stirring at room temperature, and then adding a polymerizing agent and an inducer to obtain a mixed solution; s2, continuously stirring at room temperature to form a transparent clear solution; s3, heating the transparent clarified solution until milk white gel is gradually formed; and S4, drying the milk white gel into dry gel. According to the nanoscale high-entropy A2B2O7 type oxide ceramic powder and the preparation method of the nano ceramic block of the nanoscale high-entropy A2B2O7 type oxide ceramic powder, discharge plasma sintering is combined with a two-step preparation process, the efficiency is high, sintering is compact, the grain size of a ceramic block material can be controlled, and the nano ceramic block can be used for preparing the nano-scale high-entropy A2B2O7 type oxide ceramic powder. And the synthesized oxide has the characteristics of fine powder particle size, uniform distribution, few impurities and the like, and the method is low in synthesis temperature and relatively low in cost.

The invention relates to a compound enzyme for efficiently converting high-purity rare ginsenoside CK as well as a preparation method and application of the compound enzyme, and belongs to the technical field of microorganisms. The compound enzyme disclosed by the invention comprises beta-glucosidase, fructosyl transferase, lactase, cellulase and beta-glucanase. The beta-glucosidase, the fructosyl transferase, the lactase, the cellulase and the beta-glucanase are selected and matched to obtain the compound enzyme, the ginsenoside CK can be prepared in an enzyme engineering process, and the compound enzyme has the effect of improving the conversion rate of converting the ginsenoside Rb1 into the ginsenoside CK through synergistic interaction.

The utility model discloses a device for removing impurities in trichlorosilane, relates to the technical field of polycrystalline silicon production, and mainly aims to improve the removal efficiency of the impurities in the trichlorosilane on the basis of not increasing the cost. According to the main technical scheme, the device for removing the impurities in the trichlorosilane is characterized in that an inlet of a first mixer is connected to one end of a first feeding pipe and a second feeding pipe, a plurality of baffle plates are arranged in a reaction tank in a staggered mode and used for forming a baffle channel in the reaction tank, and one end of the baffle channel is connected to an outlet of the first mixer; the other end of the baffling channel, the filter and an inlet of the separating tower are sequentially connected, the inlet of the separating tower is further connected to a siloxane conveying pipe, a tower kettle of the separating tower is connected to the other end of the first feeding pipe and used for guiding siloxane to the first mixer, and a top collecting pipe of the separating tower is connected to the rectifying unit; wherein the second feeding pipe is used for guiding a trichlorosilane and dichlorosilane mixture containing impurities to the first mixer.

The invention belongs to the technical field of cables, and particularly relates to a high-voltage cable for a new energy vehicle, which comprises a conductor and an insulating layer, the insulating layer material is prepared from the following raw materials in parts by mass: 40 to 50 parts of polyethylene, 5 to 10 parts of beta-caryophyllene-maleic anhydride-polyethylene copolymer, 10 to 15 parts of ethylene-octene copolymer, 1 to 4 parts of composite cross-linking agent, 2 to 3 parts of cellulose nanofiber, 1 to 2 parts of kaurene, 5 to 10 parts of flame retardant, 0.5 to 1 part of flexibilizer and 0.5 to 1 part of lubricant. The prepared cable has excellent thermal stability, mechanical strength and insulating property, the service life of the cable is effectively prolonged, and the use stability of the cable is effectively improved.

The present invention discloses a shared suspended charging pile for new energy vehicles, and relates to the technical field of charging piles. The shared suspended charging pile for new energy vehicles comprises a mounting base, a slide is provided on the mounting base, a threaded rod is rotatably connected inside the slide, a first drive motor is fixedly installed on one side of the mounting base, an output end of the first drive motor is fixedly connected to the threaded rod, a moving block is slidably connected inside the slide, the inside of the moving block is threadedly connected to the surface of the threaded rod, a moving sealing box is fixedly installed on one end of the moving block away from the mounting base, so that the charging pile moves downward and moves to the top of the new energy vehicle, so that the position and height of the charging pile can be adjusted according to the needs of use, so that the new energy vehicle can be charged, the convenience of charging the new energy vehicle is improved, the space occupation is reduced, and the waste of the shared charging station area is reduced.

The invention belongs to the technical field of additive manufacturing, and relates to a low-density high-entropy alloy high-energy beam additive forming method. The method comprises the following steps: smelting an alloy; alloy crushing; ball-milling the powder; spheroidizing the powder; preparing a sample; heat treatment; and sample structure performance detection. The low-density high-entropy alloy sample prepared through high-temperature vacuum suspension smelting and plasma spheroidizing is high in room-temperature compression strength which exceeds 2300 MPa, the ductility exceeds 20%, the compression strength at the temperature of 1000 DEG C exceeds 780 MPa, meanwhile, the low-density high-entropy alloy powder manufacturing problem is solved, and the low-density high-entropy alloy powder manufacturing method is suitable for industrial production. The method has the advantages of good sphericity, good fluidity, uniform components, no hollow powder or satellite powder, low oxygen content and the like, and provides a powerful basis for promoting the application of high-temperature alloy structure new materials in the aerospace field.

The invention discloses a modification method for obtaining melt separation titanium slag based on a hydrogen-based shaft furnace reduction-melt separation process, and belongs to the technical field of titanium-containing melt separation slag modified.The method specifically comprises the steps that S1, high-titanium vanadium-titanium pellets are prepared; s2, high-titanium type vanadium-titanium metallized pellets are prepared, and reduction is conducted through a hydrogen-based shaft furnace; s3, the high-titanium type vanadium-titanium metallized pellets are subjected to melt separation, and titanium-containing melt separation slag is obtained; s4, the titanium-containing molten slag is subjected to modification treatment of silicon extraction and magnesium reduction, and anosovite phase precipitates are obtained; the method provided by the invention lays a foundation for pure steel production; impurities in the smelting process are few, and products are pure; a hydrogen reduction gas product (water) is easy to separate and treat, so that clean production can be realized; iron is extracted and other valuable components are enriched at the same time; when the vanadium titano-magnetite is subjected to hydrogen reduction, TiO2 cannot be reduced, and separation of iron and titanium components in the subsequent process is facilitated.

The invention belongs to the field of biomedical materials, and particularly relates to a preparation method of collagen tripeptide and an obtained product. Compared with the prior art, the method has the advantages that by adding alkali to soak the cowhide particles and combining treatment means such as denaturation and enzymolysis, the destroy denaturation of a triple helix structure of collagen in the cowhide can be promoted, the collagen can be thoroughly subjected to enzymolysis, so that the yield of collagen tripeptide is higher, the molecular weight is small and concentrated, and meanwhile, the foreign flavor in the cowhide can be effectively removed; subsequently, mixed enzymes jointly act on collagen peptide bonds, so that generation of collagen tripeptide is facilitated; in the operation process of the method, acid or alkali does not need to be added for multiple times to adjust the pH, and the generated collagen tripeptide is low in ash content; after suction filtration and impurity removal, impurities in the collagen tripeptide are reduced, and the yield of the obtained collagen tripeptide freeze-dried product is high; under the synergistic effect of all the treatment processes, the prepared product is fine and smooth in component, free of fishy smell and foreign flavor and good in water solubility.

The utility model discloses a polypropylene raw material processing device which comprises a processing device body, a first filter plate and a second filter plate are installed in the processing device body, the first filter plate is arranged above the second filter plate, a plurality of groups of first through holes are annularly formed in the first filter plate, and a plurality of groups of second through holes are annularly formed in the second filter plate. A plurality of groups of first through holes are formed in the first filter plate, a plurality of magnetic suction rings are fixedly connected to the lower end of the first filter plate, the plurality of magnetic suction rings are arranged among the plurality of groups of first through holes, magnetic suction strips are arranged at the lower ends of the plurality of magnetic suction rings, and a plurality of second through holes are formed in the second filter plate. Crushed plastic particles are filtered through the first filter plate, when the plastic particles pass through the first filter plate, metal impurities in the plastic particles can be filtered through the magnetic attraction ring arranged at the lower end of the first filter plate, and impurities with small particle sizes in the plastic particles can be filtered through the second filter plate, so that the impurities in the plastic particles are reduced, and the service life of the plastic particles is prolonged. And the impurities are prevented from influencing subsequent processing of the plastic particles.

The latex waste liquid recovery device comprises a recovery tank and a demulsification stirring structure, the top of the recovery tank is provided with a liquid inlet box, the bottom of the recovery tank is provided with a blow-off pipe, the side wall of the recovery tank is provided with a demulsification liquid adding port, the inner side wall of the recovery tank is provided with a filtering recovery tank, the filtering recovery tank is of an annular structure, and the demulsification stirring structure is arranged in the filtering recovery tank. A water passing hole is formed in the bottom of the filtering and recycling tank, a filtering net is arranged in the recycling tank and is of a conical structure, the bottom of the filtering net is arranged at the top of the filtering and recycling tank, and the demulsification stirring structure is arranged in the recycling tank. The utility model relates to the technical field of latex production, and particularly provides a latex waste liquid recovery device which can fully and efficiently mix waste liquid with a demulsifier and can clean the inner wall of a tank body.

The invention provides novel waterproof phase change thermal insulation mortar and a preparation method thereof, and relates to the technical field of mortar building materials, the novel waterproof phase change thermal insulation mortar is prepared from the following raw materials by weight: 500 parts of ordinary Portland cement, 150 parts of water, 250-450 parts of fine sand, 50-200 parts of a shape-stabilized phase change material, 5-15 parts of a polycarboxylic acid water reducer, and 1-5 parts of polysorbate. The diatomite is treated by adopting a three-step method of calcination, acid pickling and hydrophobic modification, so that on the basis of reducing impurities and increasing the pore volume, the diatomite is modified from hydrophilicity to hydrophobicity and lipophilicity, the adsorption capacity of the diatomite to n-hexadecane is further enhanced, and the enthalpy and volume stability of the shape-stabilized phase change material can be remarkably improved.

The invention discloses a method for efficiently leaching waste aluminum electrolyte and recovering fluorine, lithium, aluminum and sodium, belongs to the field of solid waste resource recovery, and solves the following problems of low aluminum and lithium leaching rate in an alkaline process and HF pollution in an acid process. The method comprises the following steps: crushing, grinding and screening waste aluminum electrolyte blocks to obtain waste aluminum electrolyte powder A; uniformly mixing the waste aluminum electrolyte powder A with a calcium-containing reaction auxiliary material to obtain a material B; adding the material B into an alkali solution, and carrying out a leaching reaction; separating the materials to obtain filter residues and filtrate; carrying out acid pickling purification and impurity removal on filter residues, and filtering; extracting the filtrate to obtain a loaded organic phase and raffinate; carrying out reverse extraction on the loaded organic phase; adding reaction auxiliary materials into the raffinate, uniformly stirring, reacting, standing, filtering and separating; continuously supplementing reaction auxiliary materials into the filtrate, uniformly stirring, standing, filtering and separating. According to the method, multiple components in the waste aluminum electrolyte can be efficiently recycled, and the comprehensive utilization rate is high.

The invention relates to the field of agricultural machinery, and discloses a rice threshing device with a drying function, comprising: a crushing assembly used for preliminarily separating harvested rice so as to provide convenience for subsequent threshing operation; the extrusion assembly can automatically turn over rice to be threshed, and the double-face threshing function is achieved; the crushing assembly is used for crushing rice, the drying assembly is used for removing waste and dust generated in the threshing process and drying the threshed rice through a heating function, and the driving assembly is used for driving the crushing assembly and the telescopic assembly to synchronously operate to ensure that the threshing process is efficiently carried out; and the screening assembly is used for screening the threshed rice and waste materials generated in the threshing process, and further separation of the materials is achieved. Preliminary crushing is firstly carried out through the crushing assembly, the extrusion assembly achieves double-face extrusion through hydraulic control, it is ensured that grains fully fall off, the telescopic assembly can accurately adjust the threshing strength according to the variety and maturity of different rice, and the threshing efficiency is improved to the maximum extent.

The invention discloses a method for inhibiting argillization in a coal washing process, and relates to the technical field of coal processing.The argillization inhibitor comprises filler and auxiliaries, the filler comprises sodium oleate and sodium hexametaphosphate, and the auxiliaries comprise a stabilizer, an antioxidant, a surfactant and an emulsifier; a layer of argillization inhibitor is sprayed on the surface of the coal in advance, so that the surface of the coal is covered with the argillization inhibitor, oil acid radical ions in the argillization inhibitor are adsorbed on the surface of the coal, the content of hydroxyl and hydrocarbon groups on the surface of the coal is increased, the hydrophobicity of the coal particles is improved, and therefore the coal particles are not prone to being dissolved; sodium hexametaphosphate in the argillization inhibitor can enhance the barrier effect among coal particles, so that the coal particles are in a dispersed state, the hydrophilicity of high-ash components in the coal is improved, the high-ash substances in the coal are inhibited from floating out along with clean coal, and the coal slime water treatment is facilitated. The purpose of reducing the ash content of the flotation clean coal is achieved.

The invention relates to the technical field of plant extraction, in particular to a preparation method of a plant extract, which comprises the following steps: stirring and mixing a plant raw material and water in a transparent container, cleaning based on preset cleaning times and preset standing time to obtain a target raw material, wherein the clarity of the upper-layer solution and the precipitation speed of the plant raw materials are determined based on a plurality of detection time points, and the standing time or the stirring speed of single-time cleaning of the plant raw materials and the preset cleaning frequency are adjusted according to the clarity and the precipitation speed of the upper-layer solution; drying and crushing the target raw material to obtain target powder; mixing the target powder with water to form a mixed solution, and boiling to obtain a target stock solution; grinding the target stock solution, adding diatomite, and carrying out pressure filtration to obtain a filter cake and a filtrate; determining the mass of diatomite according to the volume of the grinding liquid, and determining the thickness of a filter cake in the filter pressing process to dynamically adjust the filter pressing pressure; and carrying out ultrafiltration concentration, sterilization and spray drying on the filtrate to obtain a polysaccharide product. According to the method, the yield of the polysaccharide product is improved.

The invention discloses a method for preparing plant-derived cholesterol through chemical catalysis, which is characterized in that plant-derived BA is used as a raw material, chemical catalytic reduction is carried out through an intermediate compound 3, compared with an enzyme method, a large number of proper enzymes do not need to be screened, the cost is low, the stability is good, in addition, the influence of reaction sites on the Grignard addition yield is avoided through hydroxyl protection, and the yield of the plant-derived cholesterol is improved. Finished product isomer impurities can be reduced, the product yield is improved, and purification treatment is facilitated. The whole preparation route does not need an expensive catalyst, the reaction condition is mild, the specificity is high, the high-purity cholesterol can be obtained only through simple aftertreatment in each step, the method is suitable for industrial production, and the quality can meet the standards of medical injection and pharmaceutic adjuvants.

The invention provides a multi-tower series connection method and device for boron isotope separation, and relates to the technical field of isotope separation. According to the multi-tower series connection method for boron isotope separation, four stages of low-temperature rectifying towers which are sequentially connected in series are adopted to achieve low-temperature rectifying separation of boron isotopes at the specific temperature and pressure, tower bottom materials of the previous stage of rectifying tower serve as feeding raw materials of the next stage of rectifying tower, and materials of all stages of rectifying towers are conveyed through pumps; after rectification of the four-stage rectifying tower, a 10BF3 product with abundance greater than 99% can be extracted from the tower bottom of the ultimate rectifying tower; and condensing the gas-phase material at the top of each stage of rectifying tower into liquid through a condenser, extracting the 11BF3 light component, and mixing and collecting the 11BF3 light component through a collecting tank. The method and the device are operated under the normal pressure condition, the boron isotope product can be continuously produced, the energy consumption is low, the production speed is high, the technological operation is simple, no side reaction exists, the product impurity is few, the purity of the boron isotope separated product can be ensured, the cost is low, and the method and the device have good industry prospects.

The invention belongs to the technical field of chemical medicine preparations, and particularly relates to a promethazine hydrochloride injection and a preparation method, the promethazine hydrochloride injection comprises the following components by weight concentration: 20-30 mg / mL of promethazine hydrochloride, 0.4-0.6 mg / mL of anhydrous sodium sulfite, 0.6-0.8 mg / mL of sodium pyrosulfite and 0.03-0.07 mg / mL of thioglycerol; the stability of the injection can be improved.

The present invention belongs to the field of nuclear industry, and discloses a system and method for crushing and dissolving a quartz target tube, including a cleaning device, a drying device, a crushing device and a dissolving device. The cleaning device cleans the quartz target tube, the drying device dries the quartz target tube, the crushing device crushes the quartz target tube, and causes the crushed quartz target tube and the target material therein to fall down. The dissolving device receives the fallen quartz target tube and the target material, and dissolves the quartz target tube and the target material. The present invention cleans the quartz target tube by a cleaning device, dries the quartz target tube by a drying device, crushes the quartz target tube by a crushing device, and dissolves the quartz target tube debris and the target material by a dissolving device, which is convenient for subsequent extraction, storage and use, and has the advantages of safety, high efficiency, less impurities and high product quality.

The invention discloses a nanofiber membrane material for a solid polymer electrolyte as well as a preparation method and application of the nanofiber membrane material. The nanofiber membrane material is prepared from the following raw materials: an electrostatic spinning fiber membrane and a polymer matrix, the polymer matrix comprises a polymeric monomer, a lithium salt and an initiator; the polymeric monomers comprise polyethylene glycol diacrylate and trifluoroethyl methacrylate. The room-temperature ionic conductivity, the electrochemical window and the high-temperature mechanical property of the nanofiber membrane material disclosed by the invention are all at relatively high levels in the field of solid polymer electrolyte, and the nanofiber membrane material is easy to prepare and assemble into a battery.

The invention relates to preparation of sodium bicarbonate co-production ammonium sulfate, in particular to a method and a system for preparing sodium bicarbonate co-production ammonium sulfate from low-temperature mirabilite, and aims to overcome the defects that high-purity ammonium sulfate cannot be obtained or the technical route of twice freezing-high-temperature ammonia distillation is high in energy consumption and large in industrialization difficulty in the prior art. The method for preparing sodium bicarbonate and co-producing ammonium sulfate from mirabilite at low temperature comprises the steps of preparing sodium bicarbonate, preparing ammonium sodium solid salt, acidifying and crystallizing the ammonium sodium solid salt, cooling and crystallizing, and preparing ammonium sulfate, and the sodium sulfate and the ammonium sodium solid salt are removed to obtain a high-purity sodium bicarbonate product and an ammonium sulfate product. In the system for preparing sodium bicarbonate and co-producing ammonium sulfate from mirabilite at low temperature, a plurality of evaporation devices and recycling pipelines among the evaporation devices are reasonably arranged, so that full utilization and recovery of products in each step are realized.

The invention belongs to the technical field of FPC flexible board processing, and particularly relates to an FPC flexible board film laminating machine which comprises a rectangular board, a film laminating device is arranged on one side of the upper end of the rectangular board and comprises a coiled film arranged at the upper end of the rectangular board, and a cleaning device is arranged on one side of the film. The cleaning device comprises coiled adhesive tape arranged on one side of the thin film, first L-shaped strips are rotationally arranged on the two sides of the adhesive tape correspondingly, a second rotating wheel is rotationally connected between the two first L-shaped strips, a clamping assembly is arranged between the first L-shaped strips, and the clamping assembly is used for clamping the end of the coiled thin film. The thin film is pulled out through the clamping assembly, the thin film moves along with one side of the adhesive tape, the upper end of the cleaned FPC flexible board can be covered with the thin film immediately, dust existing between the thin film and the FPC flexible board is greatly reduced, the adhesive face of the adhesive tape rolls at the upper end of the FPC flexible board to adhere and remove the dust, and friction caused to the FPC flexible board can be reduced.

The invention discloses an extraction method of silymarin. The extraction method of the silymarin comprises the steps of polar solvent treatment, acid solution treatment, alkaline solution treatment and purification. The polar solvent is selected from one or more of chloroform and dichloromethane, and the alkaline solution comprises one or more of sodium hydroxide and potassium hydroxide. The extraction method of the silymarin provided by the invention has the effects of reducing the extraction difficulty and cost of the silymarin.

The invention discloses a method for preparing high-purity zinc sulfide by using activated zinc oxide, which comprises the following specific steps: 1) adding activated zinc oxide into a dilute sulfuric acid solution, heating, stirring and filtering to prepare a zinc sulfate solution; (2) dropwise adding dilute sulphuric acid into the sodium sulfide solution, introducing N2 to pressurize, desulfurizing and dehydrating the generated mixed gas of hydrogen sulfide and N2, introducing the mixed gas into the bottom of the zinc sulfate solution to react while stirring, designing a container filled with zinc sulfate into three-stage series connection, after dropwise adding is finished, turning off N2, continuously stirring, after stirring is finished, standing to precipitate zinc, and then carrying out centrifugal suction filtration to obtain zinc sulfide; 3) adding deionized water to wash zinc sulfide to obtain a wet zinc sulfide product; 4, the wet zinc sulfide product is put into a vacuum drying furnace to be dried, then the dried zinc sulfide is crushed into powder through an N2 airflow crusher, and the industrial high-purity zinc sulphide is obtained.According to the method, the complicated process of zinc sulfate refining and sulfide purifying is omitted, and the generated zinc sulfide product is high in purity, few in impurity and extremely low in raw material loss.

The invention discloses a double-filtration separation device and an engine oil filter comprising the same, and the double-filtration separation device comprises a separation ring, a filter element and a filter element, the separation cavity is coaxially formed in the separation ring in an annular form; the magnetic block and the granular activated carbon are positioned in the separation chamber; the inlet hole and the outlet hole are formed in the separation ring and are both communicated with the separation cavity; the filter screen is fixedly arranged at the outlet hole and is used for holding granular active carbon; wherein low-temperature engine oil containing impurities enters the separation cavity through the inlet hole and is discharged from the outlet hole after being subjected to double adsorption of the magnetic block and the granular activated carbon, and the discharged engine oil flows back through the bypass valve. The cover pole is fixedly arranged at the top of the shell; and the sealing ring is fixedly arranged on the cover pole. Engine oil directly impacts on the inner rings of the magnetic blocks and rotationally flows in the inner rings of the magnetic blocks, so that metal particles in the engine oil move towards the magnetic blocks, and the metal particles are magnetically adsorbed by the magnetic blocks more quickly in cooperation with magnetic adsorption of the magnetic blocks.

According to the phosphogypsum-waste concrete composite cementing material for the road and the preparation method of the phosphogypsum-waste concrete composite cementing material, waste concrete recycled powder and phosphogypsum are compounded for use, and the multi-level process synergistic effect of specific microbiota treatment, airflow suspension aggregate, a modifier and the like is achieved; and the micro powder is obviously changed in particle morphology, chemical activity and structural characteristics. The obtained cementing material is more uniform in particle, smooth in surface and more compact in structure, and impurities are reduced; the internal potential volcanic ash activity is excited, the chemical activity is obviously improved, and the material can better participate in hydration reaction; more stable and firmer combination with other road building materials is formed, and the durability and mechanical property are remarkably enhanced, so that the overall stability and the service life of a road are improved, and the cement is completely replaced to be applied to road engineering. And meanwhile, the reduction and recycling application of the phosphogypsum and the waste concrete regenerated powder is realized.

The invention provides a preparation method for efficiently synthesizing hectorite, aiming at the defects that the existing hectorite synthesis technology is high in cost, complex in condition, time-consuming, energy-consuming and the like, process improvement is carried out, and the method comprises the following core steps: adding a magnesium carbonate and magnesium oxide mixed magnesium source, a specific silicon source and a single lithium source into deionized water at room temperature, and carrying out high-speed shearing to obtain uniform slurry; then adjusting the pH value by adopting sulfuric acid, hydrochloric acid, sodium carbonate or introducing a plurality of regulators such as carbon dioxide, and shearing; and performing high-temperature crystallization in a closed container, and sequentially performing filter pressing, washing, drying, grinding and sieving to obtain a finished product. According to the preparation method for efficiently synthesizing hectorite provided by the invention, various cheap raw materials are selected to replace high-purity chemicals, multi-link optimization is realized, the cost is reduced, the efficiency is increased, time is shortened, energy is saved, and the product is excellent in quality, high in purity, few in impurities, excellent in microstructure, dispersed, transparent, high in rheological property and huge in application potential in the fields of cosmetics, well drilling, coatings and the like; the method has breakthrough significance and wide prospects in industrial production and product application.

The invention discloses an impurity analysis method for a budesonide inhalation solution, and relates to the technical field of budesonide impurity analysis, and the method comprises the following steps: weighing 50mg of a budesonide inhalation solution sample, placing the budesonide inhalation solution sample in a 10mL volumetric flask, adding a diluent (such as acetonitrile and methanol) to a scale line, and fully shaking to dissolve the diluent to prepare a 5mg / mL sample solution; and filtering the diluted sample by using a filter so as to remove insoluble impurities. According to the budesonide inhalation solution impurity analysis technology, the product quality, the market competitiveness and the research and development capability of enterprises can be remarkably improved, meanwhile, the requirements of laws and regulations are met, and time and cost are saved; by analyzing the impurities, the product quality and safety can be improved, and by accurately analyzing and controlling the impurity content in the medicine, the purity and quality of the product can be remarkably improved, so that the risk of adverse reaction and side effect can be reduced, and the medication safety of a patient is improved.