326results about How to "Realize industrial mass production" patented technology

The present invention is foamed polypropylene material and its production process. The foamed polypropylene material is produced with polypropylene resin 30-97 wt%, other olefin polymer 0-57 wt%, foaming agent 2-20 wt% and cross-linking assistant 0.1-5 wt%, and through a radiation cross-linking process including smelting the mixture at 110-160 deg.c, blending, shaping and radiation cross-linking in the radiation dose of 5-60 kGy; and a high temperature foaming process of normal pressure foaming at 200-350 deg.c or pressurized foaming at 200-300 deg.c. The present invention has a radiation cross-linking process superior to chemical cross-linking process with likelihood of breaking molecular chain and is suitable for industrial production, and the foamed polypropylene material has high physical and mechanical performance and high heat resistance.

The invention belongs to the technical field of functional material preparation, and relates to a novel method for preparing graphene through carrying out ultrasonic stripping on graphite. The method comprises the following steps: uniformly mixing graphite powder and an intercalator in certain proportion in an organic solvent, carrying out stripping on the obtained mixture a certain time by using an ultrasonic water bath, carrying out centrifugal separation on the obtained object, and filtering the obtained product so as to obtain a graphene material. In the traditional process for preparing graphene through ultrasonic stripping, in the invention, a series of compounds such as naphthalene and the like are taken as an intercalator for preparing graphene. Compared with the prior art, the graphene prepared by using the method disclosed by the invention has the advantages of high quality, excellent performances, less defects, low impurity content, and the like; and especially the method is a physical process, thereby ensuring the perfect performances of the graphene. In addition, the method disclosed by the invention has the advantages of simpleness, easiness for operation, low preparation cost of products, high concentration of synthesized graphene dispersion liquid, and uneasiness for gathering, and has a good application prospect in the photoelectric field of graphene materials.

The invention relates to wholesome wheat embryo powder and the production method, belonging to the technical field of food, which resolves the problems of wheat embryo powder of watery taste, short guarantee period and large loss of nutritional ingredients. The invention adopts the technical proposal that the invention makes the wheat embryo into 40 to 60 mesh grains with microcapsule technology and the whole nutritional ingredients of the wheat embryo are retained in the grains. A xanthan layer and a lecithin layer are coated outside the grain orderly. The invention comprises the following steps: synthetically sterilizing and enzyme killing, super micron crushing, matching, homogeneously emulsifying, sterilizing and enzyme killing, sponging drying, boiling prilling, spray finishing and packing via vacuum charging. The invention can utilize the wheat embryo completely without any industrial waste, therefore can protect environment and achieve industrialized mass production. The invention has the advantages of long guarantee period, convention edible method, mild taste, full-bodied wheat perfume, high content of nutritional ingredient and easy commercialization.

A preparation method of a three-dimensional needling carbon / carborundum composite material bolt adopts a three-dimensional needling fiber prefabrication body to prepare the composite material bolt. Pyrolytic carbon is deposited on the prefabrication body, carborundum substrates are deposited through chemical vapor infiltration (CVI), and a bolt bar blank and a bolt cap blank are obtained. The carborundum substrates of the bolt bar blank and the bolt cap blank which are obtained through machining are deposited through the CVI, a carborundum anti-oxidation coating is deposited through the CVI, and a three-dimensional needling C / SiC composite material bolt end product with the shear strength being 80-100MP is obtained. Compared with the prior art, the preparation method has the advantages that the number of times for getting into a furnace is reduced by 6-10, the densifying period is shorter, and the production cost is reduced. By means of a test of a CK6180-3000 numerically controlled lathe, the preparation method is small in diamond grinding wheel abrasion, hour norm for machining 30 bolt threads is reduced by about 10 hours, and as the abrasion of a grinding wheel is less, the working accuracy is improved, and industrialized batch production is achieved.

The invention belongs to technical field of nanomaterials and discloses a method for solvothermal preparation of fluorescent carbon nitride quantum dots by adoption of melamine as a raw material. The method includes steps: a) calcining melamine in a muffle furnace at a high temperature, and grinding products into yellow graphite-phase carbon nitride powder; b) scattering the graphite-phase carbon nitride powder into an alcohol solvent, adding a certain amount of alkali liquor, dissolving ultrasonically, sealing in a reaction kettle, and reacting for a while at a high temperature; c) cooling to the room temperature, collecting filtrate after vacuum filtration, and dialyzing the filtrate in a dialysis bag with a certain molecular weight cutoff until the filtrate is neutral, so that the fluorescent carbon nitride quantum dots are obtained. The method is simple in process, easy in operation, low in cost and environment friendly, and the prepared fluorescent carbon nitride quantum dots are high in purity and yield, excellent in dispersity and stability and high in fluorescence intensity and have a potential application prospect in fields of bioimaging, solar cells and the like.

The invention belongs to the technical field of agricultural light conversion, and discloses an application of carbon dots in the light conversion of agricultural production as an agricultural light conversion material. Carbon dots are directly used as an agricultural light conversion material and applied to agricultural production; an excellent light conversion effect is obtained, and the cost is low. The carbon dots are used as an agricultural light conversion material in the light conversion of agricultural production; and the carbon dots are at least one of red light carbon dot and blue light carbon dot. Compared with other fluorescence materials, the used carbon dots have the advantages of easily-available and abundant raw materials, simple synthesis process, green and environment-friendly technology, and no aftertreatment pollutant, and the industrial massive production can be realized. The prepared fluorescent carbon dots are small in size (less than 10 nm), are nontoxic, have good biocompatibility, a stable luminescent property, and a low cost, can be used as a light conversion agent to promote the production of various crops, and improve the yield and quality of crops.

The invention relates to a preparation method of a titanium oxide soluble electrode; the titanium oxide is TiO, Ti3O5, Ti4O7, Ti5O9, Ti6O11, Ti7O13, Ti8O15 or Ti9O17; the method comprises the steps of firstly, preparing the raw material into a titanium oxide block or a composite titanium oxide block formed by combining the titanium oxide with a titanium rod or a graphite rod; then, carrying out fine finishing on the titanium oxide block or the composite titanium oxide block to obtain the titanium oxide soluble electrode; a technology for preparing the titanium oxide block or the composite titanium oxide block comprises the following steps: (1) blending; (2) mixing and drying; (3) sintering by adopting a discharge plasma sintering system. The invention also provides the titanium oxide soluble electrode prepared by the method, and application of the titanium oxide soluble electrode in preparation of high-purity titanium by means of molten salt electrolysis. After the method is adopted, the titanium-containing soluble electrode which is low in contents of C and N and high in conductivity can be obtained, so that the high-purity metal titanium which is not contaminated by an anode is obtained when the titanium oxide soluble electrode is taken as the anode and / or a cathode for preparing metal titanium by means of electrolysis.

The invention discloses a novel connecting element, comprising an attachment bracket and an attachment support body; wherein, the attachment bracket is provided with a plurality of branch brackets and fixed parts, the branch brackets are arranged at a certain angle mutually, and the fixed parts are arranged on the branch brackets; the attachment support body is provided with a plurality of contact surfaces and installation parts; the attachment bracket and the attachment support body are fixedly connected through the fixed parts and the installation parts. The novel connecting element in the invention has the advantages that specification standards for precast beam and column can be interchangeable and industrial mass production can be realized, thus the construction cost is low, time and materials can be saved, the speed of buildings construction is fast and the purposes of environmental protection and cycle use can be achieved.

The invention discloses a method for synthesizing (trans)-4-alkyl-3-alkene biphenyl derivative monomer liquid crystals, and belongs to the field of the preparation of monomer liquid crystal materials. The method comprises the following steps of: performing condensation of para-bromo cinnamaldehyde or 3-(4-bromo-phenyl)-propionaldehyde serving as a raw material and alcohol to prepare acetal, and performing a cross-coupling reaction of the acetal and 4-alkylbenzene borate in solvent under the catalytic action of palladium to obtain a biphenyl intermediate; and removing protective group alcohol of the biphenyl intermediate to produce an intermediate, performing a witting reaction of the intermediate and alkyltriphenylphosphonium halide in the presence of potassium tert-butoxide to produce a (cis, trans)-4-alkyl-3-alkene biphenyl derivative, and performing the inversion of cis and trans configuration to obtain the (trans)-4-alkyl-3-alkene biphenyl derivative monomer liquid crystals. The method has the advantages of low cost, high quality of products and mild reaction condition, and the expanded production is easy to perform. Therefore, the method is particularly suitable for the industrial production of the (trans)-4-alkyl-3-alkene biphenyl derivative monomer liquid crystals.

The invention discloses a device for controlling the temperature of a large-space building. The device comprises an air supply man pipe, a system controller, a wireless temperature receiver and a wireless infrared counting receiver. The system controller is connected with the wireless temperature receiver and the wireless infrared counting receiver. A wireless temperature sensor and a wireless infrared counter are arranged in large space. The system controller is connected with the valve controller of the air supply main pipe. The wireless temperature receiver is in wireless connection with the wireless temperature sensor. The wireless infrared counting receiver is in wireless connection with the wireless infrared counter. The invention further discloses a method for controlling the temperature of the large-space building. The method comprises the first step that the device is started, the second step that the wireless infrared counter measures the number of seated people, the third step that when the seated rate is low, the valve controller closes a volume damper, and the fourth step that when the seated rate is high, the system controller adjusts the air volume of an air inlet. The device and method are reasonable in design and standard in process, achieve the horizontal temperature control over the large-space building and can be widely applied to various public buildings.

The invention discloses a method for preparing conducting polymer micro-nanofibers in a magnetic spinning mode. The method comprises the steps that 1, a magnetic spinning device is built, wherein the magnetic spinning device comprises a rotary collection disc with a permanent magnet; 2, a spinning precursor solution is prepared, wherein magnetic nano particles, high-molecular polymer and conducting polymer are mixed and dissolved in an organic solvent solution; 3, the magnetic spinning device is utilized for preparing conducting polymer micro-nano complex fibers, wherein the spinning precursor solution is injected into a feeding device, the feeding device is started, liquid drops on an opening of a spinning nozzle forms a jet flow under the effect of magnetic field force to be connected with the permanent magnet to be a bridge, a brushless direct-current motor is started to drive the collection disc to rotate, the ferrofluid jet flow is continuously pulled out under the effect of magnetic field force, and conducting polymer micro-nanofibers are wound and formed among vertical supporting columns of the collection disc. The method does not need the high voltage effect, reduces the production cost and potential safety hazards, is suitable for large-scale production and has the good application prospect, and the fibers are distributed in order.

The invention relates to a non-refrigerated infrared detector array based on temperature characteristics of a polycrystalline silicon PN junction and a preparation method thereof. The preparation method for the array comprises the following steps: step A, etching, filling and flatting a deep groove in order to divide an infrared detection unit transversely; step B, depositing an embedded oxygen layer and a top silicon layer on the front side of a bottom silicon layer; step C, forming an insulated isolation groove on the front side of the top silicon layer in each infrared detection unit and manufacturing a polycrystalline silicon conducting wire on an insulated cantilever beam; step D, setting a plurality of tandem polycrystalline silicon PN junctions on the top silicon layer in each infrared detection unit; step E, forming a double-layer metal wiring; and step F, manufacturing a suspended insulated cantilever beam in the each infrared detection unit, and etching the bottom silicon layer to form a cavity. The preparation method uses favorable temperature characteristics of the polycrystalline silicon PN junction to obtain detection result of infrared radiation strength through measuring changes of voltage at two ends of the polycrystalline silicon PN junction.

The invention discloses a graphene quantum dot / carbon nanotube / PEDOT:PSS composite film and a preparation method thereof. The preparation method includes blending graphene quantum dots and carbon nanotubes in water sufficiently to form a graphene quantum dot / carbon nanotube hybrid, and dispersing the hybrid to an electroconductive polymer PEDOT:PSS to form the graphene quantum dot / carbon nanotube / PEDOT:PSS composite film. The graphene quantum dot / carbon nanotube / PEDOT:PSS composite film and the preparation method thereof have the advantages that both the graphene quantum dots and the carbon nanotubes structurally comprise large delocalized pi-bonds, a graphene quantum dot layer is modified on the wall of each of the carbon nanotubes through pi-pi conjugation, and accordingly excellent water solubility is achieved; the graphene quantum dot / carbon nanotube hybrid is evenly dispersed into a PEDOT:PSS water solution through uniform dispersity of the graphene quantum dots and the PEDOT:PSS in water, and the graphene quantum dots, the carbon nanotubes and PEDOT:PSS are combined together uniformly and effectively with the aid of pi-pi interaction between the graphene quantum dots and PEDOT, so that the graphene quantum dot / carbon nanotube / PEDOT:PSS composite film is formed. The graphene quantum dot / carbon nanotube / PEDOT:PSS composite film is excellent in electroconductivity, high in Seebeck coefficient and low in heat conduction coefficient.

The invention relates to a preparation method for a lutetium-aluminum garnet-based transparent ceramic. Specifically, the method comprises the following steps (a) preparing precursor powder; (b) spraying the precursor powder onto the surface of a metal carrier chip so as to form a lamellar spraying coating; (c) separating the spraying coating from the surface of the metal carrier chip and grinding the spraying coating to obtain powder; (d) molding the powder obtained in the step (c) so as to obtain a biscuit; (e) sintering the obtained biscuit and then carrying out hot isostatic pressing so as to obtain a ceramic chip; and (f) subjecting the ceramic chip obtained in the step (e) to annealing treatment so as to obtain the lutetium-aluminum garnet-based transparent ceramic. The preparation method has the advantages of simpleness, easy practicability, low cost and wide commercial prospects. The prepared transparent ceramic has excellent optical performance.

The invention relates to the field of porous diffusion layer electrode plates of fuel cells and particularly relates to a process for manufacturing the porous diffusion layer electrode plate of the fuel cell by utilizing carbon fiber paper, and the process can be used for meeting the batch industrial production needs of porous diffusion layer electrodes of the fuel cells. The process disclosed by the invention comprises the following steps of: impregnating the carbon fiber paper in a mixed solution of modified phenolic resin and epoxy resin, drying, then preparing a base plate at high temperature and high pressure, finally performing high-temperature carbonization and then preparing the porous diffusion layer electrode plate used for the fuel cell. The porous diffusion layer electrode plate after carbonization, disclosed by the invention, has the advantages of uniform porous structure, excellent gas permeability, low resistivity, high electron conduction capability, tight structure, smooth surface, a certain mechanical strength, stable chemical properties and thermal stability, and can achieve various required indexes of the porous diffusion layer electrode plate, such as the porosity is not less than 75%, the resistivity is not more than 0.05 omega.cm, and the gas diffusion coefficient is not less than 0.15cm<2> / s and the like.

The invention belongs to the technical field of function materials and relates to a preparation method of a copper-titanium-oxide mesomorphism material. The preparation method comprises the following steps of: uniformly dissolving soluble metallic copper slat and titanium salt in a mixed solution of alcohol / water according to a certain proportion, and adding a certain quantity of surfactant in the mixing process; performing hydrothermal reaction, filtering, washing, drying in the mixed solution of alcohol / water continually; and then performing thermal treatment in a muffle furnace to obtain the copper-titanium-oxide mesomorphism material. According to the preparation method, the technology is simple and convenient, the purity of the prepared material is high, the content of impurities is low, the preparation cost of the material is low, the performance of the material is excellent, and thus the material can be subjected to industrialized mass production. The copper-titanium-oxide mesomorphism material prepared by the method can serve as a photochemical catalyst responsive to visible light, and has wide application prospect in the fields of degradation of dyeing waste water and indoor harmful gas, photochemical catalysis disinfection and the like.

The invention provides hollow carbon nano-particles and a wave-absorbing material prepared therefrom. A preparation method of the hollow carbon nano-particles comprises the steps of mixing aniline, pyrrole, a non-ionic surface active agent and water to obtain a first solution; carrying out ice bath on an ammonium persulfate solution and adding the ammonium persulfate solution to the first solution to obtain a second solution; reacting the second solution, carrying out suction filtration, washing and freeze drying to obtain a head product; and carrying out carbonization treatment on the head product to obtain the hollow carbon nano-particles. A preparation method of the wave-absorbing material comprises the steps of adding graphene, the hollow carbon nano-particles and polypropylene to a torque rheometer for banburying to obtain a mixture; and carrying out hot pressing and cold pressing on the mixture to obtain the wave-absorbing material. By adopting the graphene and the hollow carbon nano-particles as wave-absorbing media and polypropylene as a carrier, the prepared wave-absorbing material can reach the effective absorption effect on an electromagnetic wave, and meanwhile, a series of advantages of low density and fatigue resistance of the polypropylene material are also integrated.

The invention discloses a low-cost thick-specification uniform-structure hot-rolled dual-phase steel plate based on a post ultra-fast cooling technique and a manufacturing method thereof. The steel plate comprises the following chemical components in percentage by weight: 0.055-0.085% of C, 0.20-0.50% of Si, 1.20-1.50% of Mn, at most 0.40% of Cr, at most 0.012% of P, at most 0.002% of S, and the balance of Fe and inevitable impurities. The manufacturing method comprises the following steps: (1) heating a casting blank, and carrying out controlled rolling; (2) after hot rolling, cooling to a ferrite phase-change zone in a forepart centralized laminar cooling mode; and (3) cooling to martensitic phase-change temperature below by using a post ultra-fast cooling system, and coiling. The production mode, which uses the post ultra-fast cooling technique as the core, is utilized to lower the dependence of the thick-specification high-strength hot-rolled dual-phase steel on alloy elements; and the thick-specification high-strength hot-rolled dual-phase steel has the advantages of cheap components, uniform structure and excellent and stable performance, and is suitable for mass industrial production.

The industrial preparation method of silicon carbide whiskers and micrpowder is characterized by that the graphite and other industrial carbon and silicon raw materials are mixed, and placed into industrial SiC smelting furnace to make synthesis reaction, the graphite is used as conductive heating body to prepare silicon carbide whiskers and micropowder. Said preparation method is simple, the diameter of whiskers produced by said invented method is uniform, and length-diameter ratio is large and the heteromorphous crystal is less, and product quality is high.

The invention belongs to the field of materials of amorphous alloys and high-entropy alloys and discloses a high-entropy bulk amorphous alloy and a preparation method thereof. The high-entropy bulk amorphous alloy comprises the components of, by atomic percent, 25-35% of Zr, 25-35% of Ti, 22-30% of Be, 5-15% of Cu and M, wherein M represents one or two of Al, Fe, Ag, Ni, V and Cr; and when M represents one element, the atomic percent of M is 5-8%, when M represents two elements, M comprises Ni and another element, the atomic percent of Ni is 5-15%, and the atomic percent of the other element is 5-8%. According to the preparation method, electric arc melting is conducted under an inert atmosphere to prepare a master alloy ingot, and then copper mould suction casting / spray casting / pouring forming is adopted. The high-entropy bulk amorphous alloy provided by the invention has the characteristics of being high in amorphous forming capacity, low in density, high in specific strength and thelike; and the application range is wide.

The invention belongs to the technical field of functional materials, and relates to a preparation method of a nickel titanate / titanium dioxide composite nanomaterial. The method comprises the following steps: dissolving and uniformly mixing nickel acetylacetonate and titanium acetylacetonate in an alcohol solution, carrying out a cross-linking reaction at a certain temperature, and carrying out heat treatment in a muffle furnace to obtain the nickel titanate / titanium dioxide composite nanomaterial. The preparation method is simple and easy, and the nickel titanate / titanium dioxide composite nanomaterial has the advantages of high purity, low content of impurities, low preparation cost, excellent performances, and realization of industrial batch production. The nickel titanate / titanium dioxide composite nanomaterial prepared in the invention has high catalysis activity as a photocatalytic material, and has wide application prospects in the field of degradation of dye wastewater and indoor harmful gases and the field of photocatalytic disinfection.

The invention discloses hemp leaf soothing and repairing essence, and belongs to the field of cosmetics. The product comprises the following components: a penetration enhancer, a whitening agent, a soothing agent, an allergy-relieving repairing agent and a skin conditioner, wherein the allergy-relieving repairing agent comprises a hemp leaf extract, carboxymethyl chitosan, a chia seed fermentationrepairing factor and an oat kernel extract. Carboxymethyl chitosan, the hemp leaf extract, the chia seed fermentation repair factor and the oat kernel extract are used as the allergy-relieving repairagent, so that the allergy-relieving repair agent has a synergistic effect and can achieve an instant and long-acting skin allergy-relieving / soothing effect in cooperation with the soothing agent inthe formula; in addition, through mutual cooperation with the skin conditioner, the penetration enhancer and the whitening agent, the cannabis sativa leaf soothing and repairing essence has excellentskin repairing performance, acne removing performance and whitening performance at the same time. The invention also discloses a preparation method of the cannabis sativa leaf soothing and repairing essence, and the method is simple to operate and can be industrially produced on a large scale.

The present invention relates to the manufacturing technology of metal surface image etching particular effect, comprising the steps as follow:(1) the etched basic figure is chosen, corrosion proof paint is printed on the places which are complemented with the basic figure through a web;(2) the basic figure is etched on the metal board;(3) corrosion proof paint is printed on the places which are complemented with the texture figure through a web;(4) the texture figure is etched to lead the surface of the metal board to appear two layers;(5) the corrosion proof paint printed on the surface is washed out, the colored baking varnish is fully spayed and then is roasted to dry; the spray-paint surface is burnished to abrade the surface spray-paint of the non-etched figure, and then the whole body is burnished;(6) a protective disposal is maken to the burnished metal surface after being wiredrew and polished. The beneficial effect of the present invention is that the metal surface appears particular texture efficiency after multiple flows such as etching, coloring and burnishing, and has the advantages of clear layer, colorful and firm adhering of the color, and having particular artistic effect.

The invention discloses a method for separating total alkaloid from traditional Chinese medicine, in particular a method for separating belladonna total alkaloid from traditional Chinese medicine extract, which belongs to the field of traditional Chinese medicines. The method comprises the following technical proposal that the traditional Chinese medicine extract is taken and filtered; the pH value of the traditional Chinese medicine extract is adjusted to be between 1 and 7; filtrate is added to a cation exchange resin column, eluted with water to remove impurities and then eluted by use of 0.5 to 15 percent acid liquid; and eluent is collected, added with alkali for neutralization and desalted so as to prepare belladonna total alkaloid. The method overcomes the deficiency that the prior art is low in extraction ratio, large in the amount of organic solvents, complex in process, incapable of mass production, and the like, and can efficiently separate high-purity belladonna total alkaloid from traditional Chinese medicine extract.

The invention relates to a low-cost, high-strength and high-toughness mid-entropy alloy and a preparation method. The composition of the alloy is (Ni2FeCr)100-x-yAlxTiy, the molar ratio of Ni to Fe toCr is 2:1:1, and the atomic percentages of the elements Al and Ti meet 2<=x<=4at.% and 2<=y<=4at.% respectively. The preparation process of the alloy includes the steps: weighing and mixing the constituent elements according to the nominal composition, and performing vacuum melting and appropriate deformation-heat treatment processes to obtain the alloy. The alloy material has the structural feature that a nano-scale gamma' phase is dispersively distributed in an FCC matrix. The mid-entropy alloy has the performance characteristics of low cost, high strength, high plasticity, excellent thermal stability and the like.

The invention relates to an extraction method for improving the oil yield of tea seeds. The tea seeds are subjected to the treatment of screening, winnowing, impurity removal and shelling; and the material is dried at a temperature between 70 and 75 DEG C so that the water content of the material reaches between 3 and 4 percent; and 5 percent of bran coat is added into the material and is extracted. The method can overcome the disadvantages that tea seeds are vulnerable to adhesion and agglomeration, so as to form hard lumps and produce caramelization due to high content of tea saponine, and can increase oil yield by 3 to 4 percentage points.

The invention provides a preparation method for freeze-dried Chinese yam superfine micro-powder. The preparation method comprises the following steps: selecting materials and washing; peeling off and slicing; lyophilizing; crushing to obtain superfine micro-powder and sealing and packaging; after selecting the materials and washing, pre-cooling Chinese yams; then peeling off and slicing, wherein the pre-cooling temperature of the pre-cooling step ranges from-27 DEG C to -30 DEG C and the pre-cooling time of the pre-cooling step lasts for 3h; the slicing thickness in the step of peeling off and slicing is 3-5mm; the temperature in the lyophilizing step ranges from -35 DEG C to -45 DEG C; the water content of the lyophilized materials is less than or equal to 3%; the step of crushing to obtain the superfine micro-powder adopts a vibration type superfine micro-powder crusher to crush the materials; the temperature of the materials is controlled to -10 DEG C in the crushing process. According to the preparation method for the freeze-dried Chinese yam superfine micro-powder provided by the invention, immersion by adopting color-protecting solution and enzyme deactivation are not needed and the loss of heat-sensitive components of the prepared Chinese yam micro-powder is small; the loss of nutrition ingredients of the raw materials is little, the reconstitution property is good and the medical value is high.

The invention discloses a method for producing high purity of fructo oligosaccharides. The method comprises the steps of converting raw material of sucrose through enzymatic industrialized production to obtain ordinary grade fructo oligosaccharides with the content around 50 percent; then eliminating glucose in the ordinary grade fructo oligosaccharides by adopting the biotransformation principle and yeast transformation to make the content of the fructo oligosaccharides reach over 75 percent; and removing other composition by combining ion-exchange chromatography separation and membrane Separation technology to make the content of the fructo oligosaccharides reach over 95 percent. The method has the advantage that the production technology is reasonable and scientific, the fructo oligosaccharides with high purity can be extracted and industrial mass production can be realized.

The invention discloses a method for producing metallurgy-grade alumina by taking pulverized fuel ash and recycled ammonium salt as raw materials. The method comprises the following steps: (1) preparing materials; (2) roasting; (3) dissolving; (4) crystallizing; (5) carrying out a liquid-solid ammonolysis reaction; (6) grinding and removing sulfur; and (7) performing low-temperature Bayer aluminum production. The method disclosed by the invention has the advantages that an aluminum salt ammonolysis method suitable for strong acid and weak base is adopted, namely liquid-solid or gas-solid ammonolysis is performed, the production efficiency is improved by over 60 percent compared with that a liquid-liquid ammonolysis method, the process conditions of the ammonolysis method are optimized, optimal process parameters are determined, the obtained product, namely crude aluminum hydroxide, is easy to filter and wash, the model selection of equipment is simple, and industrial mass production can be realized.

The invention relates to a process for preparing a canned eight-treasure rice pudding, comprising the following steps:(1) cleaning and cutting candied fruits into small blocks; (2) cleaning glutinous rice, immersing, steaming for 40-60 minutes, adding sugar with its weight 5-15% of net weight of glutinous rice, salt of 1-10% and edible oil of 5-12%, mixing evenly; (3) mixing glutinous rice with candied fruits block, adding blending liquid with its weight 30-80% of net weight of glutinous rice, mixing evenly; (4) cleaning red bean, immersing, boiling, adding 5-12% of red bean, sugar of 5-15% and salt of 1-10%, stirring evenly and preparing sweetened bean paste; (5) loading the prepared glutinous mixture and sweetened bean paste into can; (6) sealing can, sterilizing, cooling, checking and boxing. The invention increases variety for eight-treasure rice pudding, and is characterized by simple process, low energy consumption and short production time, and so on.