35results about How to "Low cost and energy consumption" patented technology

The invention relates to a method for using bulk sintered neodymium iron boron (NdFeB) machining waste to prepare a high-coercivity regenerated NdFeB magnet and belongs to the technical field of magnetic materials. The rare earth praseodymium hydride nano powder doping technology is used to regenerate the sintered NdFeB machining waste so as to prepare the high-performance regenerated sintered NdFeB permanent magnet. The method includes: using hydrogen explosion and air flow milling to prepare NdFeB powder; using the physical gas phase deposition technology to prepare praseodymium hydride nano powder; mixing the two kinds of powder, and performing magnetic field orientation and compression moulding; performing dehydrogenation, sintering and thermal treatment on the compressed base at different temperatures to obtain the sintered magnet. The method has the advantages that various magnetic performances of the regenerated magnet prepared by the method can restore to the level an original magnet, and the coercivity of the regenerated magnet is higher than that of the original magnet, and the method is short in process flow, low in cost and energy consumption and resource saving.

The invention provides a cleaning preparation method of laminated composite metal hydroxide, wherein a general formula of chemical composition of the laminated composite metal hydroxide is M2+1-xM3+x(OH)2(An-)x/n.mH2O. The method uses hydroxide of divalent metal, basic carbonate or carbonate and the hydroxide of trivalent metal as raw materials to directly synthesize and prepare the laminated composite metal hydroxide with a regular structure by one step, wherein all the materials take part in the reaction to generate the target product without a by-product; the drying treatment can be carried out directly and the water resource is greatly saved. The method has the advantages of simple technological process, little device investment, low cost and energy consumption and no environmental pollution, and belongs to an environment-friendly technique.

The invention relates to a method for using magnetic steel of a waste permanent magnet motor to prepare a high-performance high-coercivity regenerated sintered neodymium iron boron (NdFeB) magnet and belongs to the technical field of magnetic materials. The rare earth praseodymium hydride nano powder doping technology is used to regenerate the magnetic steel of the waste rare earth permanent magnet motor so as to prepare the high-performance regenerated sintered NdFeB permanent magnet. The method includes: using hydrogen explosion and air flow milling to prepare NdFeB powder; using the physical gas phase deposition technology to prepare praseodymium hydride nano powder; mixing the two kinds of powder, and performing magnetic field orientation and compression moulding; performing dehydrogenation, sintering and thermal treatment on the compressed base at different temperatures to obtain the sintered magnet. The method has the advantages that various magnetic performances of the regenerated magnet prepared by the method can restore to the level of the original magnetic steel, and the coercivity of the regenerated magnet is higher than that of the original magnetic steel, and the method is short in process flow, low in cost and energy consumption and resource saving.

The invention relates to a method for using magnetic steel of a waste permanent magnet motor to prepare a high-coercivity regenerated sintered neodymium iron boron (NdFeB) magnet and belongs to the technical field of magnetic materials. The rare earth dysprosium hydride nano powder doping technology is used to regenerate the magnetic steel of the waste rare earth permanent magnet motor so as to prepare the high-coercivity regenerated sintered NdFeB permanent magnet. The method includes: using hydrogen explosion and air flow milling to prepare NdFeB powder; using the physical gas phase deposition technology to prepare dysprosium hydride nano powder; mixing the two kinds of powder, and performing magnetic field orientation and compression moulding; performing dehydrogenation, sintering and thermal treatment on the compressed base at different temperatures to obtain the sintered magnet. The method has the advantages that the coercivity of the regenerated magnet can be higher than that of the original magnetic steel, and the residual magnetism and magnetic energy product of the regenerated magnet are close to those of the original magnetic steel, and the method is short in process flow, low in cost and energy consumption and resource saving.

The invention provides a preparation method of deslanoside injection. According to the preparation method, the temperature of water for injection of liquor is lowered to 35-42 DEG C, heat treatment is carried out at 100 DEG C for 30 minutes or is not adopted, and ethanol (re-steaming) is changed into ethanol (medicinal) and is directly used without re-steaming, so that the re-steaming time and cost are saved, and the quality can be ensured. According to an experimental study, the related substance indexes of the product prepared by the method are obviously reduced, the product quality is improved, and the product risk is lowered. A complete inspection according to the standard of Chinese Pharmacopoeia 2010 shows that all indexes of the deslanoside injection produced by the new method meet the standard requirements. The preparation method is simple, the product quality is ensured without increasing new cost, and the cost and energy consumption can be lowered. The preparation method is suitable for large-scale industrial production.

The invention discloses a process for producing a bright thin-wall copper pipe through an up-draw method. The process comprises the steps of cathode copper smelting, up-drawing and continuous castingof oxygen free copper tube, tube rolling, bull block drawing, compound wound cleaning, annealing and drawing. The invention provides the process for producing the bright thin-wall copper pipe throughthe up-draw method. A copper-tube bus produced through the process has the advantages of small dimension error, high electric conductivity, good thermal diffusivity and strong mechanical capacity, hasthe copper content higher than or equal to 99.99 percent, the oxygen content lower than or equal to 10 PPM, and dimension error less than or equal to +/-0.05m, and the electric conductivity higher than or equal to 100 percent IACS.

The invention discloses a method for improving brilliance and tinting strength of polyester fiber. The method comprises the following step: S1, preparing coloring master batch, wherein the prepared coloring master batch is prepared from 20 to 30% of pigment, 5 to 10% of ethylene acrylate copolymer, 2 to 5% of dispersing agent and the balance of carrier resin; S2, mixing the coloring master batch with PET slices and drying, wherein the weight proportion of the coloring master batch is 5 to 20%; S3, putting the coloring master batch and the PET slices which are evenly mixed into a spinning machine to be molten and extruding into silk by a spinneret plate to form polyester fiber. According to the method for improving brilliance and tinting strength of the polyester fiber disclosed by the invention, the coloring master batch containing pigment and the ethylene acrylate copolymer is used, so that brilliance and the tinting strength of the prepared polyester fiber is improved, and the brilliance of the polyester fiber is improved by 20%; meanwhile, spinning stability is improved, pressure is stable, and a spinning period is improved by 20%; furthermore, in an assembly cleaning process, residues are less, more convenience is brought to cleaning, and cost and energy consumption are obviously reduced.

The invention discloses a preparation method of a water-based nano magnetic fluid. The method comprises the following steps of: dissolving ferrous salt and ferric salt in an acidic solution to preparea ferric salt mixed solution, and marking the ferric salt mixed solution as a feed liquid A; dissolving an alkali source in deionized water to prepare alkali liquor, and marking the alkali liquor asfeed liquid B; under the reaction condition of introducing inert gas N2, mixing the feed liquid B with the feed liquid A, heating the mixed solution in a water bath, and performing stirring to carry out a full reaction; adding a surfactant, heating an obtained mixed solution in a water bath, performing stirring, generating black precipitated nano ferroferric oxide particles after finishing the reaction, continuously introducing N2, and cooling to room temperature; collecting the black precipitates, and carrying out centrifugal washing by using a mixed solution of an organic solvent and water;and dispersing the precipitates in deionized water, removing the organic solvent, and carrying out ultrasonic dispersion to obtain the water-based nano magnetic fluid. The water-based magnetic fluid product is uniform in size, and the average particle size of the product is 5-25 nm; the water-based magnetic fluid product is good in dispersion, single in phase and good in stability; and stable dispersion of the product for more than or equal to 6 months can be realized after the product is modified.

The invention relates to a buoyancy and attitude adjustment integrated system of a manned submersible. The system comprises the manned submersible, ballast tank units, a main pumping assembly, outer circulation switch valves and a first switch valve, one ends of the outer circulation switch valves are connected with the ballast tank units in a one-to-one correspondence mode, the other ends of theouter circulation switch valves are connected with the main pumping assembly, the other end of the main pumping assembly is connected with the first switch valve, and the other end of the first switchvalve communicate with the open sea environment; the system further comprises inner circulation switch valves, one ends of the inner circulation switch valves are connected with the ballast tank units in a one-to-one correspondence mode, and the other ends of the inner circulation switch valves are connected with pipelines between the main pumping assembly and the first switch valves; the outer circulation switch valves are matched with the main pumping assembly and the first switch valves to inject or discharge seawater into or out of the ballast tank units; and the inner circulation switchvalves are matched with the main pumping assembly, the first switch valves and the outer circulation switch valves to complete water injection and water drainage among the ballast tank units. The problems that the buoyancy and attitude adjustment system is complex in design, high in cost, high in energy consumption, short in endurance time and low in reliability are solved.

The invention discloses an injection molding process for an ultrahigh-flatness liquid crystal screen supporting panel. The process comprises the following steps of composite drying stage: drying a PC-ABS composite; melting stage: feeding the dried composite into an injection molding machine; injection molding stage. In the injection molding process for the ultrahigh-flatness liquid crystal screensupporting panel, for an injection molded part panel, special temperature setting is adopted, a mold fixing mold is connected with a refrigerator with a temperature of a fixed mold being set to be 25DEG C, a mold moving mold is connected with an oil temperature machine with a temperature of a moving mold being set to be 95 DEG C, and sliders on the two sides of the moving mold are connected witha water temperature machine with a temperature of each slider being set to be 60 DEG C, so that cooling speeds of different areas of the injection molding part panel are different, and the deformationquantity of the final injection molding part panel after being completely cooled is controlled to be at a low degree; and in addition, the one-step forming flatness of the PC/ABS material injection molding panel with the area of the positive surface being 390cm^2 is within 0.2mm, secondary processing such as subsequent shaping is not needed, and the injection molding process has the technical characteristics of less surface defects, high qualified rate, low cost, low energy consumption and the like.

Belonging to the technical field of chemistry and chemical engineering and functional materials, the invention in particular relates to a preparation method and application of a glucose coated oil-water separation membrane. The preparation method includes: adding glucose into deionized water and fully stirring the substances to obtain a glucose aqueous solution; adjusting the pH value of the glucose solution, and then putting a cellulose net membrane into the solution for soaking; then taking the cellulose net membrane out and putting it in a glutaraldehyde aqueous solution for soaking; and then taking the cellulose net membrane out, and conducting full washing and drying, thus obtaining the glucose coated oil-water separation membrane. The prepared glucose coated oil-water separation membrane can be applied to oil-water separation or oil-water emulsion separation.

The invention discloses a preparation method of potassium aspartate crystals. The method comprises the following steps of (1) adding pure water being 0.25 times the mass of aspartic acid into a reaction container; in the stirring state, adding the aspartic acid and potassium carbonate; preparing a potassium aspartate aqueous solution; (2) after reaction clarification, regulating the pH value to 6.5 to 6.8 by potassium carbonate; (3) adding medical active carbon into the obtained solution for decoloration filtering; (4) adding organic solvents into filter liquid; (5) controlling the crystal separation temperature at 0 to 20 DEG C; performing cooling crystal separation for separating the crystals for 8 to 12 hours; performing vacuum drying on filter cake to obtain a product. The 0.25 times of pure water (relative to the mass of the aspartic acid) is used as the reaction solvents; the discharge of a great amount of waste water is reduced; then, the energy consumption is reduced by controlling the crystallization temperature; the solvents such as isopropanol, n-butyl alcohol and methylisobutylketone are reasonably used for obtaining a potassium aspartate finished product capable of being more stably stored; the operation in the whole crystal preparation process is simple; the cost and the energy consumption are low; the product can be easily stored; the method is very suitable forindustrialized production.

The invention provides a battery thermal management system, which comprises a battery box body used for loading a battery, and further comprises a heat dissipation unit arranged on the outer wall of the battery, a battery support is arranged at the bottom in the battery box body, a condensation tank is arranged at the bottom of the battery support, an aerial fog generator is arranged on the condensation tank, a temperature detection module for detecting the temperature of a battery is arranged on the battery box body, a fan is arranged on the wall surface of the battery box body, an electric heating wire net is arranged between the battery in the battery box body and the fan, a nozzle of the aerial fog generator is arranged between the fan and the electric heating wire net, the battery thermal management system further comprises an upper computer for controlling the temperature detection module, the fan, the aerial fog generator and the electric heating wire net. The structure is simpler, a worker can maintain the battery conveniently, and meanwhile, the temperature of the battery is effectively managed.

The invention discloses a synthetic fiber preparation method for inhibiting production of fine hair. The synthetic fiber preparation method comprises the following preparation steps: 1, selecting synthetic fibers with the length of 1-6cm; 2, mechanically crushing synthetic fibers, adding the crushed synthetic fibers into water to form a suspension, carrying out ultrasonic dispersion, and filtering to obtain a synthetic fiber suspension; 3, adding a treating agent into the synthetic fiber suspension prepared in the step 2, wherein the mass ratio of the synthetic fibers to the treating agent is (6-20): (1-4); and 4, continuing to mechanically stir and crush the synthetic fiber suspension treated by the treating agent in the step 3, filtering, and drying to obtain the synthetic fiber provided by the invention. The preparation method is simple, low in cost and energy consumption, capable of effectively inhibiting the generation of fine hair and improving the practicability, and capable of being popularized and used in a large range.