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908results about How to "Short process" patented technology

Method for preparing and recovering ternary anode material from waste nickel-cobalt-manganese ternary lithium ion batteries

The invention discloses a method for preparing and recovering a ternary anode material from waste nickel-cobalt-manganese ternary lithium ion batteries. The method is characterized by including steps: step 1, subjecting the waste nickel-cobalt-manganese ternary lithium ion batteries to disassembling, crushing, calcining and leaching to obtain leachate which contains Li, Ni, Co and Mn, and subjecting the leachate to decontamination to obtain decontaminated liquid; step two, adjusting a molar ratio of Ni, Co and Mn in the decontaminated liquid, adding alkali metal hydroxides, adjusting system pH to be larger than or equal to 10, and performing primary precipitation to obtain turbid solution with NCM hydroxide precipitates; step 3, adding carbonates into the turbid solution obtained at the step 2 to realize secondary precipitation, and performing solid-liquid separation to obtain a ternary material precursor; step 4, calcining the ternary material precursor in air to obtain the ternary anode material. The method is simple in process, extensive in raw material source and high in repeatability, and the ternary anode material prepared according to the method is excellent in performance and available for large-scale production.
Owner:CENT SOUTH UNIV

Preparation method of Cu-Nb multi-core composite wire with rectangular cross-section

InactiveCN101872660AThe process steps are simpleShort processSuperconductors/hyperconductorsManufacturing extensible conductors/cablesL&D processExtrusion
The invention discloses a preparation method of a Cu-Nb multi-core composite wire with the rectangular cross-section, which comprises the following steps: firstly, carrying out first extrusion assembly and drawing for a single pure Nb rod and a first outer oxygen-free copper sheathing; secondly, carrying out second extrusion assembly and obtaining a first Cu-Nb multi-core composite filament; secondly, according to the extrusion assembly method and related process parameters in the step 2, repeatedly carrying out third extrusion assembly; thirdly, according to the extrusion assembly method and related process parameters in the step 2, repeatedly carrying out fourth extrusion assembly; and finally, setting and drawing by a rectangular mold. The invention has simple process step, short process, high production efficiency, low preparation cost and good use effect, and the produced Cu-Nb multi-core composite wire has superior performance; and the invention is suitable for mass production, can better control the dimensional accuracy of the rectangular cross-section, and can machine any size and length of hundred-million-magnitude-order Cu-Nb multi-core composite wires with the rectangular cross-section.
Owner:NORTHWEST INSTITUTE FOR NON-FERROUS METAL RESEARCH

Short-process method for preparing high-performance sintered NdFeB magnet by utilizing sintered NdFeB oil sludge waste material

The invention discloses a short-process method for preparing a high-performance sintered NdFeB magnet by utilizing a sintered NdFeB oil sludge waste material, and belongs to the technical field of recycling of the sintered NdFeB oil sludge waste material. The method comprises the following steps: (1) distillation of organics in oil sludge, (2) ultrasonic washing of oil sludge powder, (3) calcium reduction and diffusion, (4) ultrasonic rinsing and drying under a magnetic field, (5) powder mixing and sintering, and the like. The short-process method has the advantages that when the sintered NdFeB oil sludge waste material is taken as a raw material, the regenerative high-performance sintered NdFeB magnet can be directly obtained; a vacuum stepped heating method is adopted in an oil sludge distillation process, so that most organics can be effectively removed; magnetic field ultrasonic treatment is adopted in an oil sludge powder washing process, so that residual organics can be effectively removed; through an addition of nanometer powder, the maximum magnetic energy product of the obtained regenerative high-performance sintered NdFeB magnet can reach 35.26 MGOe. The method is short in process, efficient, environmentally friendly, and high in rare earth recycling rate.
Owner:BEIJING UNIV OF TECH

Oil-resistant, high-temperature-resistant and flame-retardant thermoplastic elastomer cable material and preparation method thereof

ActiveCN104629183ARaw material selection and proportioning are reasonableShort processRubber insulatorsPlastic/resin/waxes insulatorsChemistryPolypropylene
The invention relates to an oil-resistant, high-temperature-resistant and flame-retardant thermoplastic elastomer cable material and a preparation method thereof and belongs to the technical field of electric wires and cables and preparation thereof. The cable material is prepared from the following raw materials in parts by weight: 20-35 parts of a thermoplastic elastomer, 5-15 parts of an oil-resistant modifier, 5-10 parts of polypropylene, 1-5 parts of a compatilizer, 2-6 parts of extending oil, 15-25 parts of a flame retardant, 0.2-0.6 part of a lubricant and 0.4-0.8 part of an antioxidant. As raw materials are reasonably selected and proportioned, the mechanical property change rate of the material soaked in 902# oil for 168 hours at 60 DEG C is within 25%, the high-temperature-resistant deformation is 26-30% at 150 DEG C, and the flame-retardant performance reaches VO level, so that the stringent requirements of UL62 on the TPE material are fully satisfied. The preparation method provide is short in technical process, and the extruding temperature is within 100-200 DEG C. Compared with the prior art, the extruding temperature is remarkably reduced and an energy-saving effect is reflected.
Owner:CHANGSHU ZHONGLIAN PHOTOELECTRICITY NEW STUFF +1

Method for producing polyester industrial yarn by one-step method

InactiveCN101671854AShort processImprove dry crystallization effectSpinning head liquid feederMelt spinning methodsWater contentSolid phases
The invention discloses a method for producing polyester industrial yarn by a one-step method, comprising a solid-phase polymerization step, a fusing spinning step, a stretching and heat shaping stepand a winding and forming step. The method is characterized in that: in the solid-phase polymerization step, raw materials with the viscosity of 0.65+/-0.05dl/g, the content of terminal carboxyl groupof 24+/-3mol/t are cut into pieces and stuck to be materials with the viscosity of 1.035+/-0.01dl/g, the water content less than or equal to 20ppm and the content of the terminal carboxyl group lessthan or equal to 15mol/t through continuous solid-phase polymerization; in the fusing spinning step, the ratio of the length to the diameter of spinneret orifices of a spinneret plate for spinning is3:1, the deviation ratio of the aperture to the length of the spinneret orifice is +/-0.02, and the spinneret orifices are evenly arrayed in the spinneret plate; in the stretching and heat shaping step, four rollers are adopted for stretching and shaping; and in the winding and forming step, the winding speed is 6,300+/-500m/min. The polyester industrial yarn can simultaneously achieve the performances of high strength, high modulus and low shrinkage, and has breakage strength more than or equal to 8.2CN/dtex, initial modulus more than or equal to 110N/dtex, the modulus more than or equal to 5.0cn/dtex when 5 percent is stretched and dry heat shrinking percentage less than or equal to 4.1 percent.
Owner:SHANDONG HELON POLYTEX CHEM FIBER

Method for separating and recovering copper, nickel and iron from electroplating sludge

The invention relates to a method for separating and recovering copper, nickel and iron from electroplating sludge. The method mainly comprises the following steps: first, dissolving the electroplating sludge, and removing ferric ions in the form of a ferric hydroxide precipitate by adjusting the pH; second, forming the precipitates of the copper and the nickel by adjusting the pH, washing and filtering the precipitates, adding glycerol to form crimson blue glycerin copper solution to realize the separation of the copper form the nickel, and separating copper hydroxide precipitate from the separated crimson blue solution by adjusting the pH; third, washing the copper hydroxide precipitate obtained in the second step and dissolving the washed copper hydroxide precipitate by using sulfuric acid to obtain nickel sulfate solution, and evaporating the nickel sulfate to obtain acidic nickel sulfate. According to the method, the problem that the copper, the nickel and the iron in the electroplating sludge are difficult to recover when the copper, the nickel and the iron coexist is solved, and the corresponding recovery products are respectively obtained by fully utilizing the difference among the chemical properties of the copper, the nickel and the iron; the method has the advantages of short process flow, easiness in operation and high recovery rate.
Owner:NANJING UNIV

Method for recycling vanadium and chromium from high-chromium low-vanadium vanadium precipitation wastewater

The invention provides a method for recycling vanadium and chromium from high-chromium low-vanadium vanadium precipitation wastewater. The method comprises the following steps of: adsorbing the vanadium and the chromium in the vanadium precipitation wastewater by using ion exchange resin to obtain resin containing the vanadium and the chromium; desorbing the resin containing the vanadium and the chromium to obtain a desorption solution containing the vanadium and the chromium; performing vanadium precipitation treatment on the desorption solution to obtain coarse ammonium polyvanadate and a chromium-containing solution or obtain coarse ammonium metavanadate and the chromium-containing solution, adjusting the chromium-containing solution to be acid, performing reduction and neutralization treatment on the chromium-containing solution, and thus obtaining chromium residues; and dissolving the coarse ammonium polyvanadate by using a basic solvent, further precipitating the vanadium, and thus obtaining the ammonium polyvanadate or the ammonium metavanadate, or dissolving the coarse ammonium metavanadate in hot water to form a solution, adding ammonium salt into the solution, performing recrystallization, and thus obtaining qualified ammonium metavanadate. By the method, the vanadium and the chromium can be recycled and separated from the vanadium precipitation wastewater directly, and a qualified vanadium product can be obtained; and the method has the characteristics of short process, high vanadium yield, simple industrialization equipment and the like.
Owner:PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP +3

Twisting machine used for compound double twisting

The invention relates to a twisting machine, in particular to a twisting machine used for compound double twisting. The twisting machine comprises a frame, wherein the frame is provided with a driving transmission mechanism, at least one twisting device and a yarn winding device corresponding to the twisting device; the twisting device contains at least two double twisting spindles and one compound twisting spindle, the double twisting spindles are parallel to each other and fixed on the mounting plate of the compound twisting spindle; a first-twist bolster is fixed on the mounting plate, a compound twisting spindle whorl is driven by the driving transmission mechanism, the compound twisting transmission wheel is connected with a a first-twist spindle whorl which rotates in the reverse direction of the compound twisting transmission wheel, through a transmission belt; and parallel grooves are arranged on the external circumference of at least one of the compound twisting transmission wheel and the first-twist spindle whorl. The invention mainly provides the twisting machine used for compound double twisting which has simple structure and can perform four processes to multiple strands of raw material yarn on the same platform simultaneously, namely first-twist and double twisting, combination, compound twisting and double twisting in reverse direction, and winding; the production process flow is greatly shortened, the working time is reduced, the production cost is saved, the yarn quality is remarkably increased; and the technical problems of the prior art that the twisting machine can only perform one process, the structure of the integrated twisting machine is huge and complicated and the degree of twist is inconvenient to adjust, can be solved.
Owner:杭州新合力线业有限公司

Process for extracting aluminium and chlorides in aluminium ash

The invention relates to a method for extracting aluminium and chloride by processing aluminium ash. The method is suitable for the comprehensive application of the aluminium ash which is industrial residue generated during remelting and casting in an electrolytic aluminium plant, an aluminium processing plant or a secondary aluminium plant. The invention is characterized in that the extraction process comprises the following steps of: directly sending delivering extracted aluminium liquid for casting, after the aluminium ash is heated to completely melt aluminium in the aluminium ash and separate the aluminium from slag; immersing the slag in water to dissolve the chloride in the aluminium ash in the water, and separating solid and liquid; and evaporating liquid phase to produce a chloride crystal, and using solid phase as a raw material to produce alumina. The method for processing the aluminium ash has the advantages of short process flow, convenient operation, easy industrial implementation, high comprehensive application value and high coefficient of recovery, can extract various valuable compositions in the aluminium ash. The coefficient of recovery of the metal aluminium in the aluminium ash is larger than 85 percent, and the coefficient of recovery of the chloride in the aluminium ash is larger than 80 percent.
Owner:GUIZHOU BRANCH CHINA ALUMINUM IND

Oxide dispersion strengthened (ODS) steel preparing method and martensitic steel

The invention provides an oxide dispersion strengthened (ODS) steel preparing method and martensitic steel. The oxide dispersion strengthened steel preparing method includes the steps that iron oxides are added into a casting mould, a proper number of rare earth elements are added into a fully deoxidized molten steel, the mixture is rapidly cast into the casting mould, and the ODS steel is obtained through the reaction between the rare earth elements and the iron oxides. The martensitic steel is obtained by performing hot forging, hot rolling, hot machining and hot treatment on the ODS steel prepared through the method. The ODS steel prepared through the method is high in hardenability, the residual austenitic content is very low, and a full martensite structure can be obtained. W, V and Ta are strong carbide forming elements and have a remarkable strengthening effect, and the mechanical property is obviously higher than that of steel prepared through a traditional smelting technology. Meanwhile, the ductile-brittle transition temperature (DBTT) value is minus 80 DEG C and minus 90 DEG C, the good toughness of the traditional smelting technology is well inherited, and meanwhile good anti-radiation performance is achieved. By means of the ODS steel preparing method, the demands for preparing ODS steel in batches with stability, short process and low cost can be met.
Owner:UNIV OF SCI & TECH BEIJING

Efficient and continuous dyeing process method for textile fabric through wet-state steaming

The invention provides an efficient and continuous dyeing process method for textile fabric through wet-state steaming, which belongs to the fabric dyeing method. The process method comprises the following steps in sequence: fabric soaking in dyeing solution, bake-steaming for color fixation, water washing and drying and feeding. During the drying and feeding procedure, the humidity of mixed gas in the reaction steam box is 25-35 percent, the temperature of the mixed gas is 120-130 DEG C, the air volume of the mixed gas is 4m3/s, and the processing time is 2-3 minutes; the saturated vapor pressure is 0.15-0.2MPa; and during the water washing procedure, the content of the water softener B in lotion is 2-3g/L, and the rest is water. The dyeing process method shortens the process flow, thereby not only improving the production efficiency, but also saving the energy. In addition, compared with the traditional dyeing process, the dyeing process method has the advantages of high color fixing speed, high color fixing rate, bright color, no dye transfer, low alkali consumption, good reproducibility, good levelness, good penetration and the like. Therefore, the invention can be used for obtaining good washing-resistant and friction-resistant fastness.
Owner:YUYUE HOME TEXTILE
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