15results about How to "Fine particle" patented technology

The invention relates to the technical field of biological medicine, in particular to radix puerariae and sesame coffee for improving non-alcoholic fatty liver and application of the radix puerariae and sesame coffee. The radix puerariae and sesame coffee comprises the following components in parts by weight: 0.5 part of a fructus cannabis polypeptide solution, 0.5 part of radix puerariae polypeptide solution and 9 parts of coffee. After continuous treatment for 7 weeks, according to liver appearance and liver histopathology observation, it is found that the radix puerariae and sesame coffee mixed liquid effectively reduces lipid deposition and liver fat, and the liver fat lesion is improved. Experimental results show that the radix puerariae and hemp coffee has a remarkable lipid-lowering effect, and can effectively reduce liver fat particles, reduce inflammatory injury, improve liver tissue pathological changes and relieve NAFLD mouse liver tissue injury.

The invention discloses a method for preparing a Na2FePO4F / C material by using iron phosphate waste residue, which comprises the following steps: (1) carrying out oxidizing roasting pretreatment on the iron phosphate waste residue to obtain a roasted product; (2) mixing and reacting the roasted product with an acidic reducing agent to obtain a reaction product; (3) mixing and reacting the reaction product, a sodium source, a fluorine source, a carbon source, an iron source, a phosphorus source and an aluminum source, and drying the reaction product to obtain an intermediate product; and (4) carrying out reduction roasting on the intermediate product to obtain the Na2FePO4F / C. According to the invention, the doping modification effect of the aluminum impurities in the raw materials in the Na2FePO4F / C material is fully utilized, so that the cycle performance of the Na2FePO4F / C at high rate is effectively improved.

The utility model provides suspension grinding equipment which is characterized in that a crushing mechanism is arranged in an inner cavity of a crushing box, the crushing mechanism comprises a mounting block, and the right side of the mounting block is fixedly connected with an air pump. Firstly, a suspension needing to be ground is added into a crushing box through a feeding hopper, a first driving motor is started to drive a rotating rod and a crushing roller, when the suspension enters the crushing box, an air pump drives a first crushing block to impact a second crushing block to crush the suspension, and the crushed suspension can fall down and is subjected to secondary crushing by a driving crushing roller and a driven crushing roller; the suspension subjected to secondary crushing can fall into the grinding barrel under the guide of a baffle, a second driving motor is started to enable a blade to rotate at a high speed to grind the suspension again, and the second driving motor drives a driving gear and a driven gear to enable a scraping strip to scrape off the suspension attached to the inner wall of the grinding barrel to grind again; the ground suspension can fall into the storage box, the drawer is pulled out through the handle, and the ground suspension is taken out.

The invention relates to the technical field of lithium batteries, in particular to an LMFP composite positive electrode material and a preparation method thereof. According to the method, the LMFP composite positive electrode material is prepared from a composite carbon source, and the composite carbon source comprises cane sugar, polyvinyl alcohol and polystyrene microspheres. According to the method, the LMFP composite positive electrode material with proper carbon content, uniform particle size distribution, porosity and good electrochemical performance can be obtained; the method has the advantages of simple steps, mild conditions, low cost, no need of introducing chemical substances with strong toxicity, and good environmental protection characteristic; the LMFP composite positive electrode material has the advantages of high energy density, small electrochemical polarization, good rate capability and good cycle stability.

A method for recovering organic tin in a vinyl ether compound transesterification kettle liquid, comprising the following steps: 1) taking the vinyl ether compound transesterification kettle liquid, cooling to-10-40 DEG C, standing, until crystals are precipitated in the transesterification kettle liquid, filtering, or, cooling to-10-40 DEG C, adding 0.1-5% of organic tin powder in mass fraction to the transesterification kettle liquid, stirring and mixing uniformly, then standing, until crystals are precipitated in the transesterification kettle liquid, filtering; 2) adding a basic solution with a concentration of 5-8 wt% to the crystals obtained by filtering, in a mass ratio of 1:0.5-10, and heating to 25-60 DEG C, until flocculent substances appear on the surface of the basic solution, and filtering the lower aqueous phase; 3) washing the crystals obtained by filtering with water, then washing with an organic solvent, drying, to obtain organic tin. The process condition is mild and the operation is convenient, the recovered organic tin can be used repeatedly, the production cost of enterprises is reduced, and environmental pollution is avoided.

The present invention discloses a carbazole coupling compound and a preparation method and application thereof. The structure of the compound is shown in the following formula: wherein R is selected from any one of the following; n is an even number of integers from 0 to 20; and X is selected from any one of F, Cl, Br, and I. The carbazole coupling compound synthesized by the present invention contains an N positive center and can be more easily adsorbed on the surface of a copper layer. The large conjugated large plane of the carbazole coupling compound can have a larger coverage area on the electrode surface and can increase cathode polarization, inhibit copper deposition, thereby making the particles of electroplated metal deposition finer and making the copper-plated layer obtain a high preferred crystal plane orientation, more effectively preventing the reduction and deposition of copper ions. The carbazole coupling compound is adsorbed to a place with high current density during electroplating, and can be used as an electroplating leveling additive to play a leveling role.

This invention relates to the field of sulfur production technology and discloses an oil-extended insoluble sulfur and its preparation method. The method includes: drying industrial sulfur with a sulfur content ≥99.9% and heating it to 135~145℃ to melt it; heating the molten sulfur to 230~250℃ under a pressure of 1.5~2.5MPa to carry out a polymerization reaction, adding a composite polymerization auxiliary during the polymerization reaction; depressurizing the molten sulfur after the polymerization reaction within 0.1~0.5s and injecting it into a quenching liquid for quenching to obtain crude insoluble sulfur; drying the crude insoluble sulfur and mixing it with iodine, then grinding and aging it to obtain an aged product; extracting the aged product with an extractant and drying it to obtain high-purity insoluble sulfur powder; and coating and extruding the high-purity insoluble sulfur powder with aromatic oil and a composite stabilizer. This invention simultaneously solves the contradiction between low conversion rate of the low-temperature method and poor safety of the high-temperature method, which has long plagued the industry, and achieves better technical results.

The invention discloses a preparation method of high-quality anhydrous sodium acetate. Comprising the following steps: dropwise adding alkali liquor into acetic acid or an acetic acid solution in a stirring state to obtain a sodium acetate solution, and preparing anhydrous sodium acetate from the sodium acetate solution by using a spray dryer. The sodium acetate solution is directly subjected to spray drying by using the spray dryer, the solution does not need to be concentrated, crystallized and dried, the operation steps are reduced, the process is simple, the yield is high, and the cost is low. The water content of the prepared sodium acetate powder is less than 1.0%, the sodium acetate content is greater than or equal to 99.0%, and the yield is greater than or equal to 98.5%.

This invention provides a flame retardant for water-based fire-retardant coatings for steel structures, prepared from the following raw materials: urea, phosphoric acid, acidic lignin, and pentaerythritol; the weight ratio of urea, phosphoric acid, acidic lignin, and pentaerythritol is 1:(0.8-1):(0.1-0.5):(0.01-0.05). Applying this flame retardant to water-based fire-retardant coatings for steel structures achieves both moisture resistance and flame retardancy.

The invention discloses an Mg3Sb2-based semiconductor material for energy conversion and a preparation method thereof, and belongs to the technical field of energy conversion, and the molecular formula of the Mg3Sb2-based semiconductor material is Mg < 3.2 > Bi < 1.3 > Sb < 0.7 >. Mg < 3.2 > Bi < 1.3 > Sb < 0.7 > can generate n-p conduction transformation; when the K is less than 500 K, Mg < 3.2 > Bi < 1.3 > Sb < 0.7 > is an n-type semiconductor; when the voltage is greater than 500 K, Mg < 3.2 > Bi < 1.3 > Sb < 0.7 > is a p-type semiconductor. The preparation method comprises the following steps: uniformly mixing magnesium powder, bismuth powder and antimony powder according to a molar ratio of 3.2: 1.3: 0.7, sealing in a pure argon environment, and carrying out alloying, cold pressing and sintering to obtain the Mg3.2 Bi1. 3Sb0.7. When Bi is doped into the Sb position, the Mg vacancy concentration in the material can be effectively reduced, and the electron concentration can be improved at the same time. The doping not only enables the energy band gap of the material to be narrowed and converted into a narrow-band-gap semiconductor, but also improves the carrier concentration of the material. Under the combined action of the two factors, the electron concentration in the material is remarkably enhanced, and then conversion from an n-type conduction type to a p-type conduction type can be achieved. Therefore, the material has huge application potential in the technical field of energy conversion.

The utility model discloses a kind of ammonium dihydrogen phosphate tubular reactor spray head devices, including mixed acid reactor and spray head, the mixed acid reactor both ends are respectively arranged opening, first flange is arranged at mixed acid reactor both ends opening, the spray head one end is arranged opening, the other end is arranged spout, the spray head opening one end is arranged second flange, the mixed acid reactor and spray head are connected fastening by first flange and second flange.The technical scheme of the utility model is adopted, phosphoric acid enters from the left side of mixed acid reactor, and after being fully reacted with the ammonia gas of the upper and lower two groups of ammonia gas inlets, slurry is obtained, after slurry enters spray head, the flow guiding effect of cyclone vane makes material rotate in pipeline, and then the flow rate of spraying is increased by the pressurizing effect of booster conical tube, finally material is sprayed in atomized state, the slurry in atomized state is finer than ordinary directly sprayed slurry particles, and the speed of evaporated moisture is faster, and better finished product ammonium dihydrogen phosphate can be obtained compared with ordinary spray head.

The invention discloses a phosphorus-containing waste curing process, and belongs to the technical field of hazardous waste curing treatment, and the phosphorus-containing waste curing process specifically comprises the following steps: (1) sequentially carrying out hydrolysis, filtration, impurity removal and catalytic oxidation treatment on phosphorus-containing waste to obtain hydrolysate; (2) concentrating the hydrolysate obtained in the step (1), and centrifuging to obtain a concentrated solution; (3) carrying out curing treatment on the centrifuged concentrated solution under the action of a curing agent and a curing auxiliary agent to obtain a calcium phosphate cured body for landfill; the process is simple and easy to implement, organic matter is removed while reactivity is eliminated, the landfill requirement is met, waste is treated with waste, and the capacity increasing ratio can be reduced.

The application discloses a semiconductor device and a process cavity maintenance method. The maintenance method comprises the following steps: providing a process cavity, a target film layer is deposited on the inner wall of the process cavity, and the target film layer is a semi-insulating oxygen-doped polysilicon film layer; a first gas is introduced into the process cavity, the target film layer is subjected to a first treatment, the target film layer is oxidized to form an oxidized target film layer, and the oxidized target film layer is cracked and peeled off under the action of stress, and the first gas is an oxidizing gas; and a second gas is introduced into the process cavity, and the process cavity is purged. The application can realize online maintenance of the process cavity, maintain the particle performance at a good level, has the advantages of simpler, more reliable, more efficient and faster maintenance, and can greatly reduce the labor cost and the material cost.

The utility model belongs to the technical field of cement block crushing, and particularly relates to a cement block crushing device, which solves the problems of poor crushing efficiency and poor damping effect, and comprises a working box and a damping component, a motor is mounted on one side of the working box, and the output end of the motor is fixedly connected with a coaxially arranged rotating shaft through a coupler; through the arrangement of a connecting rod, a lever and other structures, when a motor works, the rotating shaft rotates to drive the disc to rotate and the connecting rod to move up and down, the lever can swing up and down through a supporting rod, and finally a moving plate drives a crushing hammer to crush cement blocks in the equipment; the crushing hammer is used for carrying out primary crushing to crush larger cement blocks into smaller blocks, and then the crushing roller is used for carrying out secondary crushing to obtain finer particles, so that the crushing process is more thorough, the effect is better, and the overall crushing efficiency is improved.

The re-humidification and atomization system of the re-humidification zone of the tobacco sheet re-drying machine of this utility model includes: a re-humidification zone 1, a re-humidification zone 2, a re-humidification zone 3, a main conveyor belt, a first water tank, a second water tank, a first water pump, and a second water pump. The re-humidification zones 1, 2, and 3 are placed sequentially. The main conveyor belt passes through the main housing of the re-humidification zones 1, 2, and 3 sequentially. The high-temperature condensate recovery pipe is connected to the first water tank through a first automatic switch valve. Hot water and cold water are mixed in the second water tank and then sent to the re-humidification zones 1, 2, and 3 through the main re-humidification humidification pipe and the second pump humidification branch pipe. In the second water tank, the water tank is divided into upper and lower parts by a partition. The cold water pipe enters the upper part of the partition, and a mixing water pipe is set below the partition. Cold water enters the mixing water pipe from the cold water pipe, and hot water from the first water tank extends into the mixing water pipe of the second water tank. Small water outlet holes are evenly distributed in the part of the hot water pipe in the mixing water pipe.