74results about How to "The process is simple and flexible" patented technology

The invention provides a process method for separating and purifying rare earth elements by solvent extraction. The method takes a mixed rare earth sulfate solution obtained from a rare earth ore treated by sulphuric acid as a raw material, directly adopts a nonsaponifiable P507 extraction agent or a synergistic extraction agent containing the P507 to completely extract rare earth in a material liquid into an organic phase, and then takes the organic phase as a rare earth material liquid to extract, separate and purify the rare earth or directly backextract to produce mixed chlorinated rare earth or rare earth nitrate. The process method is simple and flexible, does not saponify the organic phase during the extraction and separation process, does not produce ammonia nitrogen waste water, is easy to backextract middle and heavy rare earths, and has less consumption of acid and base and low production cost.

The invention relates to the field of bastnaesite hydrometallurgy, and in particular relates to a method for fluorine removal of wastewater in bastnaesite hydrometallurgy. A specific scheme comprises the following steps: A. regulating pH value of a fluorine-containing waste liquid to be acid through hydrochloric acid; B. adding cerium carbonate or lanthanum carbonate as well as hydrochloric acid to the waste liquid; C. adding a flocculant to the liquid obtained from reaction of the step B; and D. collecting a flocculating product. Through the method disclosed by the invention, chlorine in the wastewater is nearly completely turned into cerium fluoride; and therefore, the method not only reduces pollution but also facilitates operation.

The utility model belongs to field of solar battery, and relates to a manufacturing approach of flexible nanometer-crystalline film of dye sensitizing solar battery, which adopts nanostructured porous TiO2 powder as the material and forms the porous TiO2 film by depositing on a conducting substrate by vacuum deposition. The utility model is characterized in that a porous TiO2 film is made by vacuum cold coating, wherein the nanostructured porous TiO2 powder is accelerated by airflow and impacts on the substrate or the TiO2 coat at a high speed to speed up the combinations of the powder under the pressure of high speed impact at instantaneous high temperature rise; therefore the coat is combined well with the substrate and so are the grains in the coat. The film made by the above approach dose not need to go through high temperature process during manufacturing and after manufacturing, therefore is suitable for manufacture of flexible nanometer-crystalline film of dye sensitizing solar battery.

The invention discloses a method for preparing a photocatalytic material with a multi-component porous classification structure. The method includes firstly, cleaning and treating surfaces of natural plant leaves, and soaking the natural plant leaves in metal precursor steeping liquor to obtain a metal oxide base material with a nanometer structure via hydrolysis and calcination; and secondly, steeping, drying and calcining the base material in precious metal precursor liquor to obtain the composite material with the multi-component porous classification structure. The invention further relates to photocatalytic composite material with the multi-component porous classification and application of the photocatalytic composite material. The method is simple and flexible in process and low in cost, precious metal is doped into the metal oxide intrinsic conductor nanometer material with the porous classification structure so as to obtain the photocatalyst material with excellent performances, and the photocatalyst material can effectively catalytically decompose organic pollutant in visible light.

The microwave transfer process of fixing biological macromolecule pattern to the active surface of polymer includes selectively "mounting" biological macromolecule to the micro wells of polydimethyl siloxane stamp; forming one condensated water layer on the surface; dissolving biological macromolecule in water of the micro well and of transverse diffused area and producing chemical reaction in solution; and fixing biological macromolecule in pattern on the active surface of the polymer. The process is simple, flexible and repeatable, and the micro pattern has high contrast and fastness. The cheap process of fixing biological macromolecule in pattern is especially suitable for the less reaction activity biological moecule/active surface system. The present invention has excellent application foreground in constructing biological device, tissue engineering, cell biological research, etc. based on cells.

The invention relates to a device and method using integrated synchronous shortcut nitrification anammox coupling with shortcut denitrification to treat low-carbon-nitrogen-ratio city domestic sewageand belongs to the technical field of biological sewage treatment. The device comprises a raw city sewage tank, an SBR reactor, a blast aerator and a water discharge tank. At the beginning of reaction, the domestic sewage enters the SBR reactor, denitrifying bacteria use the carbon source in the domestic sewage to perform shortcut denitrification on residual NO3<-> of the previous cycle, the generated NO2<->-N and NH4<+>-N are synchronously removed through an anammox effect, residual organic matter is stored in the bodies of the denitrifying bacteria to synthesize PHA, low-oxygen aeration is performed after the reaction, integrated anammox reaction is performed on a biological membrane to remove NH4<+>-N and generate NO3<->-N, then stirring is performed, and the denitrifying bacteria use the PHA stored in the bodies to perform endogenous denitrification. The device and method has the advantages that NO2<-> accumulation is achieved in the form of shortcut nitrification and shortcut denitrification, N and COD of city sewage can be removed efficiently, the organic matter in the domestic sewage is sufficiently utilized, an external carbon source is not needed, aeration energy consumption is reduced, and deep denitrification is achieved.

The invention relates to a hydro-upgrading method of poor gasoline. The invention provides a hydro-upgrading method of ultra-deep desulfurization and octane number preservation of poor gasoline, including the followings: poor full range gasoline is divided into light range gasoline and heavy range gasoline; the weight range gasoline is contacted with selective hydrobon catalyst in the first-stage reaction zone so that the reaction effluent in the second-stage reaction zone is contacted with desulfuration-hydrocarbon multibranched hydroisomeric catalyst and the reaction effluent in the third-stage reaction zone is contacted with supplementary desulfuration-hydrocarbon monobranched isomeric/aromatizing catalyst; and then the reaction effluent and the light range gasoline are mixed according to a proportion so as to obtain ultra clean gasoline product. The hydro-upgrading method is applied to hydro-upgrading for poor gasoline, particularly for ultra-high-sulfur and high-olefin poor catalytically cracked gasoline, can maintain or improve the product octane number and keep higher product liquid yield while greatly reducing the contents of olefin and sulfur, and can produce ultra clean gasoline of national IV or even higher standard.

The invention discloses a foam magnesium alloy preparing method, belonging to the field of the production of an alloy with open or closed pores. The method is particularly a method for preparing a magnesium alloy by means of foaming a powder entity and comprises the following steps: firstly, mixing 150-270-mesh pure magnesium powder and 250-400-mesh pure aluminum powder according to a mass ratio (pure magnesium powder : pure aluminum powder) ranging from 4:1 to 9:1 so as to obtain a metal powder mixture, uniformly mixing the metal powder mixture with 200-325-mesh TiH2 powder vesicant which accounts for 1.0-2.5 percent of the mass of the metal powder mixture, carrying out cold pressing and hot pressing on the mixture obtained from the previous step, and then obtaining a magnesium alloy foaming precast block; and then, under the protection of argon, preparing the foam magnesium alloy with an average aperture ranging from 1 mm to 5 mm by means of heating the foaming precast block in a mould. The method has the advantages of simple and flexible process, short period, high productive rate and no impurity; and the foam magnesium alloy prepared according to the method has a closed-pore structure and the advantages of high porosity, uniform pore structure distribution, regular pore shapes, wide application scope and good comprehensive performance.

The invention discloses a light high-conductivity and heat-resistant aluminum conductor and a preparation method thereof. The aluminum conductor is composed of, by weight, 0.035-0.06% of B, 0.1-0.2% of Zr, 0.1-0.3% of Er, inevitable impurities and the balance Al. The technological process comprises the steps of smelting, on-the-spot fast component analyzing, refining, rapid cooling casting, blank annealing, extruding and drawing. The added B element has the refining and modifying effects and mainly has the effect of promoting supersaturated solid solutions containing Zr and Er to separate out Al3(Er and Zr) ternary composite phases; the Al3(Er and Zr) composite phases are nano particles which are coherent with a matrix and have shell-core structures, are dispersed in the aluminum matrix and can greatly improve the electricity conductivity and the heat resistance of the aluminum conductor; the density of obtained monofilaments is smaller than or equal to 2.71 g/cm<3>, the electricity conductivity of the monofilaments is greater than or equal to 62%IACS, the short-time heat-resistance temperature of the monofilaments reaches 230 DEG C, the long-term heat-resistance temperature of the monofilaments reaches 210 DEG C, and the tensile strength of the monofilaments is greater than or equal to 165 MPa; the economic benefits are remarkable, the energy is greatly saved, and the environmental friendliness is high.

The invention discloses a determination method for magnets in iron ore. The method comprises steps as follows: firstly, after magnetic iron ore is crushed, manual repeated magnetic separation is performed, moisture of samples obtained after separation is evaporated to dryness, magnetic iron is enabled to be separated from iron and other impurities, magnets obtained after separation are dissolved by hydrochloric acid, a solution is prepared, the iron element of the solution enters an atomizing system of an inductively coupled plasma emission spectrometer in a form of aerosol, a target substanceis gasified and ionized in a plasma torch, a characteristic spectral line is radiated under excitation, concentration of iron in the solution is calculated according to the Lambert-Beer law, and magnet content of the ore is calculated. The method has no special requirement for nature and composition of the ore, and magnetite, hematite, specularite, limonite, siderite and common metallic ore are all suitable for the method. The method further has the advantages of high analysis speed, low cost, high efficiency, simple and flexible technological process, low energy consumption and the like, andthe application prospect is quite broad.

The invention discloses a method for preparing a composite electrode material. The method comprises the following steps: activating hair, dispersing the hair in a dispersing medium, and adding a metal source solution for soaking so as to adsorb metal ions; and calcining the hair in an oxygen-containing atmosphere or an inert atmosphere, thereby obtaining the composite electrode material containing metal oxides or metal sulfides. The invention also discloses a composite electrode material prepared by the preparation method and a battery containing the composite electrode material. According to the method disclosed by the invention, the process is simple and flexible, and complicated and accurate process control is not needed. According to the method disclosed by the invention, the hair serves as a biological template, the hair resources are rich and readily available, hair residues and other wastes can be effectively utilized, wastes are changed into valuable materials, and the cost is low. According to the method disclosed by the invention, lots of chemical reagents are not needed, the method is environment-friendly, and sustainable development of the environment is promoted.

Embodiments of the present invention provide a mobile station paging method and a mobile call center device, The method includes: receiving a service call request, and selecting a corresponding posterior probability table according to an identifier of a target mobile station included in the service call request, where the posterior probability table includes a distribution probability of the target mobile station in each cell of a location area where the target mobile station is located in a service state; and selecting a cell to page the target mobile station according to the distribution probability. The paging is performed based on the distribution probability of a user in the each cell in the service state; the paging process is simple; and the application scenario is wide, thereby saving air interface resources while ensuring a paging efficiency.

The invention discloses a phenyl-imidazopyridine type trivalent-iridium organometallic complex and an organic electro-phosphorescent doped luminescent device based on the trivalent-iridium complex. The organic electro-phosphorescent material electroluminescent device has a layered doped structure, wherein a luminescent layer selects CBP as a matrix material and a series of Ir (III) complexes as dopant. The invention adopts a vacuum deposition process to prepare an electro-phosphorescent device with high performance, manufactures a PhOLED device with high efficiency and high brightness through the concentration of the Ir (III) complexes in a matrix, obtains green emission of which the electroluminescent spectrum peak value is between 511 and 540 nm through the structure modification of the Ir (III) complexes, improves the efficiency and brightness of the device, is flexible in manufacture process, and provides a good material for full-color display and illuminating application. And the material of the invention can be applied in single/full-color display and illuminating white-light devices.

The invention involves a biological shape three-dimensional network structure palladium nano-photocatalytic materials preparation method. It makes use of dipping optimum biological materials self-deacidizing technique and uses the bird eggshell film as biological template materials; it prepares three-dimensional network tubular hierarchy Pd/PdO photocatalytic composite material with excellent performance through dipping optimization in palladium salt solution and combining with roasting dispose, controls the component and construction of prepared composite material through adjusting the dipping optimization process and heat treatment process, the prepared photo-catalytic materials are combined by PdO with full crystallization and metal Pd nanometer particles uniformly, and combines special three-dimensional network intercommunicating tube construction orderly, and the metal nanometer particles loads and inserts on tube inner wall uniformly. The art of the invention method is simple, cost is low and the prepared material has excellent photo-catalytic properties.

The invention discloses a method for preparing a copper film through controlled atmosphere cold spraying. The method comprises the steps that firstly, original copper powder is conveyed into a powder oxygen content control unit, copper oxide on the surfaces of copper powder particles is reduced into copper, and the oxygen content of the copper powder is reduced; secondly, the copper powder treated through the powder oxygen content control unit is conveyed into a powder granularity control and powder feeding unit, the input copper powder is scattered and screened, and the granularity of the output copper powder particles is controlled within the set range; thirdly, the copper powder treated in the second step is conveyed into a cold spraying nozzle in a controlled oxygen partial pressure cavity; and fourthly, the speed and temperature of the copper powder particles are regulated and controlled through a gas pressure, flow and temperature control unit, and the copper powder particles in the controlled oxygen partial pressure cavity collide with base body depositions to form the copper film. The film obtained through the method is dense in structure and low in oxygen content, the conductivity is not lower than 80% that of corresponding component dense block materials, and the film is superior to a traditional electrolysis or copper electroplating film in the aspects of environment protection and cost.

Disclosed are a stereo light-emitting device composed of a flip-chip light-emitting unit array and a manufacturing method therefor. By substituting a flip-chip connection of a P-N complementary light-emitting diode (LED) chip for the metal wiring on the LED chip, the stereo light-emitting device realizes a series/parallel connection between individual light-emitting units, so as to completely eliminate the process difficulty of wiring on an LED chip trench, greatly improving the production yield and simultaneously obviating the preparation of a silicon substrate in the conventional flip-chip process. Furthermore, different series connection, parallel connection or series/parallel connection designs can be realized only by changing the layout design of an LED chip, the process is relatively simple and flexible, and the production efficiency can be greatly improved.

The invention discloses an ultrathin carrier cell sheet and a preparation method thereof. The preparation method comprises the following steps of (1) spreading a gel material solution onto a substrate, and condensing into a solid state; (2) generating an ion polymer layer which has opposite polarity with the gel material on the substrate spread with the gel material, generating an ion polymer layer which has opposite polarity with the upper ion polymer layer, on the upper ion polymer layer, and repeating the operation, so as to form a layered self-assembly film; (3) planting a target cell into the substrate obtained in step (2), and conventionally culturing; (4) in the culture process, enabling the layered self-assembled film loaded with the cell to disengage from the substrate, so as to form the cell sheet. Compared with the traditional preparation method of the cell sheet, the preparation method has the advantages that the character control or decomposing step of a supporter material is not needed, the mechanical strength of the cell sheet is obviously improved, and macromolecular medicines, such as protein, polypeptide, antibody and nucleic acid, can be loaded.

The invention discloses a layer-by-layer self-assembly film, a preparation method and application thereof. The layer-by-layer self-assembly film is formed by laying polymer layers with opposite electrical properties and dropwise adding charged therapeutic drugs; the distribution and rearrangement time of polymer in a mode of sucking unreacted solution through a vacuum extractor to produce flowingliquid phase is reduced, a step of washing with clear water is avoided, formed negative and positive ionic polymer layers are smoothly fitted, and the film can be applied to various wound surfaces through design of dies; a 100 to 20000nm ultrathin film can be formed, materials in contact with organisms are obviously reduced, and foreign body rejection reaction is reduced. The film is wide in material selection and drug selection ranges. Types and dosages of drugs can be selected, the effects of antibacterial property, anti-inflammatory property and promotion of wound healing are achieved; thefilm has flexible and convenient processibility, is suitable for the requirements of repairing of various injury wound surfaces, and is stable in product quality and good in reproducibility.

The invention discloses a device with the energy conservation and emission reduction effects and the simultaneous desulfurization and denitrification effects on flue gas. The device comprises a boiler, a denitrification device body, a desulfurization device body and a chimney, the output end of the boiler is connected to the input end of the denitrification device body through a first dust remover, the output end of the denitrification device body is connected with an air preheater, the output end of the air preheater is connected with a first heat exchanger, the output end of the first heat exchanger is connected to the input end of a second dust remover, the output end of the second dust remover is connected to a second heat exchanger through a fan, the output end of the second heat exchanger is connected with the desulfurization device body, the output end of the desulfurization device is connected with an alkali liquor absorption device, and the output end of the alkali liquor absorption device is connected to the chimney. The device has the advantages of being simple and compact in structure, obvious in effect, good in energy conservation and emission reduction effects and denitrification and desulfurization effects and low in cost. The invention further discloses a coating of the device. The coating of the device is further designed and has good chemical reagent resistance, and the service life of the device is prolonged.