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101results about How to "Serial mass production" patented technology

Preparation method of graphene uniform dispersion

The invention relates to a preparation method of graphene uniform dispersion, belonging to the technical field of new nano materials. The preparation method comprises the following steps of: (1) preparing aqueous surfactant solution with the concentration of 0.2-20g / L; (2) mixing raw graphite powder with the aqueous surfactant solution according to the concentration of 1-100g / L, forming suspension and adding the suspension into a high-pressure reactor with strirring; (3) adjusting the rotating speed of the high-pressure reactor to be 50-300rpm and the temperature in the reactor to be 100-300 DEG C, carrying out heat preservation treatment on the raw graphite powder for 5-24 hours and then taking out paste; (4) carrying out 1000-2000rpm centrifugation on the paste for 15-45 minutes, and obtaining supernatant solution which is the dispersion with one-layer and multilayer graphene. The preparation method has the advantages that the aqueous surfactant solution used in the preparation process can be recycled without exhaust emission; the used materials are non-corrosive, non-toxic, non-flammable and non-explosive products; the process can not cause large damage to the protogenic conjugated structure of the graphene; and the low cost can be realized, and the graphene dispersion with excellent dispersity and stability can be prepared.
Owner:常熟三爱富氟源新材料有限公司

Method for producing electronic-grade nitric acid

The invention discloses a method for producing electronic-grade nitric acid. The method sequentially comprises the following steps of: a) providing a chemically pure reagent-grade nitric acid raw material of which the concentration is about 70 percent; b) performing microfiltration on the nitric acid raw material, adding the nitric acid raw material into a pre-heater for preheating, and adding into a reboiler; c) heating the reboiler with saturated vapor, and making nitric acid vapor generated by heating pass through a vapor condenser to obtain a semi-finished product; d) blowing the semi-finished product with high-purity compressed air to remove residual vapor in the semi-finished product, cooling the obtained finished product again with a finished product cooler, and adding the finishedproduct into a finished product storage tank; and e) performing ultrafiltration on the finished product to remove particles so as to finally obtain the nitric acid applied in the electronic industry.In the method for producing the electronic-grade nitric acid, the normal chemically pure reagent-grade nitric acid raw material of which the concentration is about 70 percent is directly rectified and then the rectified product is blown with the high-purity compressed air. The used raw material is safe; the pressure for the subsequent tail gas treatment is greatly reduced; and the production costis reduced.
Owner:SHANGHAI ZHENGFAN TECH

Comprehensive treatment method for vanadium slag and application thereof

The invention discloses a comprehensive treatment method for vanadium slag and application thereof. The comprehensive treatment method for the vanadium slag includes the steps that the vanadium slag, sodium salt and a reducing agent are subjected to mixing and briquetting treatment, so that mixed material briquettes are obtained; the mixed material briquettes are subjected to reducing smelting treatment, so that metalized briquettes are obtained; the metalized briquettes are subjected to grinding magnetic separation treatment, so that reduced iron and vanadium-rich slag are obtained; the vanadium-rich slag is subjected to oxidizing roasting treatment, so that vanadium slag clinker is obtained; and the vanadium slag clinker is subjected to vanadium extraction treatment, so that vanadium pentoxide is obtained. According to the comprehensive treatment method, the vanadium slag, the reducing agent and the sodium salt are mixed, then the iron in the vanadium slag is recovered through reducing smelting, vanadium is enriched after the iron is recovered from the vanadium slag, and the vanadium-rich slag is obtained; and the vanadium-rich slag is subjected to oxidizing roasting to obtain water-soluble sodium vanadate, and the vanadium pentoxide is extracted from the vanadium slag. The comprehensive treatment method for the vanadium slag realizes step-by-step extraction of valuable elements of the iron and the vanadium in the vanadium slag, and the recovery rate of the iron and the vanadium is high.
Owner:JIANGSU PROVINCE METALLURGICAL DESIGN INST

Pad dyeing technology of super-imitated cotton/cotton blended fabric

The invention discloses a pad dyeing technology of a super-imitated cotton / cotton blended fabric. The pad dyeing technology particularly comprises the following steps: firstly, carrying out light alkali desizing treatment on the super-imitated cotton / cotton blended fabric; and then sequentially carrying out low-alkaline mercerizing, presetting and dyeing, thereby finishing dyeing of the fabric. By a one-bath pad dyeing technology of disperse / reactive dyes, continuous and mass production of a product can be achieved; the problem that a traditional overflow dyeing technology can only be applied to intermittent small-batch production is solved; the production efficiency is improved; and the dyelot chromatism is reduced. Dyeing is carried out by the technology disclosed by the invention, so that the damage to a super-imitated cotton fiber is small; the mass per unit area and the breaking strength loss of a finished fabric product are small; and the processed fabric is bright and full in color, high in color fastness and good in hand feeling and wearing comfort. Compared with a conventional pad dyeing technology, the pad dyeing technology is low in alkali charge, low in dyeing temperature, low in energy consumption, energy-saving and environment-friendly.
Owner:SHAANXI YUANFENG TEXTILE TECH RES

Cone yarn packaging production line and packaging technique thereof

The invention discloses a cone yarn packaging production line and a packaging technique thereof. The cone yarn packaging production line comprises an alignment device, a big end and small end detecting device, a turning device, a single-yarn cut-sealing machine, a single-yarn heat shrinkage machine, a lining device, a cut-sealing machine for a whole bag of cone yarns, and a heat shrinkage machine for the whole bag of cone yarns, wherein the alignment device, the big end and small end detecting device, the turning device, the single-yarn cut-sealing machine, the single-yarn heat shrinkage machine, the lining device, the cut-sealing machine for the whole bag of cone yarns, and the heat shrinkage machine for the whole bag of cone yarns are installed on a conveying device in sequence. According to the cone yarn packaging production line and the packaging technique thereof, cone yarns are adjusted to be in the vertical state through the alignment device; the big end and small end detecting device is used for detecting the positions of the big end and the small end of each cone yarn; the turning device is used for turning the cone yarns selectively; the single-yarn cut-sealing machine is used for packaging each single cone yarn through a damp-proof plastic film; the single-yarn heat shrinkage machine is used for making the plastic films tightly shrink onto the cone yarns; the lining device is used for lining the cone yarns according to a set number of lines and then packaging the whole bag of cone yarns through damp-proof plastic films. The heat shrinkage machine for the whole bag of cone yarns is used for making the plastic films firmly shrink onto the cone yarns, and then packaging of the whole bag of cone yarns is completed. The cone yarn packaging production line and the packaging technique thereof have the advantages that the automation degree is high, continuous volume production can be achieved, both manpower resources and material resources are saved, and the quality of the whole bag of packaged cone yarns is good.
Owner:TAIAN COMPANION MACHINERY

Wave-flat rolling composite method for steel/aluminum/aluminum alloy layered composite plate

ActiveCN111922079AEnhance the bonding strength of the steel-aluminum interfaceEliminate Oxygen ProblemsAuxillary arrangementsMetal rolling arrangementsAlloy surfaceAluminium alloy
The invention discloses a wave-flat rolling composite method for a steel/aluminum/aluminum alloy layered composite plate. The method comprises the following steps that a steel/aluminum layered composite plate with a good plate shape and a firmly combined interface is prepared, cold rolling is carried out by using large-thickness-ratio ripples, deformation of a to-be-composited interface is enhanced, deformation of component metal is coordinated, and the problem of no deformation of a steel-aluminum interface is solved; then aluminum and aluminum alloy surface compounding is achieved through interface wave-flat hot rolling and coordinating component deformation, and the high-performance steel/aluminum/aluminum alloy layered composite plate is prepared; the anti-oxidation problem in the compounding process is eliminated by utilizing the advantage that interfacial oxidation has little influence on combination of aluminum and aluminum alloy; and finally, the problems that in the rolling process of the steel/aluminum/aluminum alloy layered composite plate with the thickness being 4 mm or above, the interface shearing effect is weak due to the fact that the steel-aluminum joint face is close to a neutral layer, and the interface bonding strength is low due to the fact that interface bonding mainly depends on the heat-pressure effect are solved, and the problem of deformation discordance caused by large performance difference of steel, aluminum and aluminum alloy is solved.
Owner:TAIYUAN UNIV OF TECH
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