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43results about How to "Simple control conditions" patented technology

Technique and device for effectively recovering waste printed circuit boards solder

The invention relates to a technology for high-efficiently recycling soldering tin of discarded printed circuit boards, and a device. In a sealed system, in which liquid heat conducting medium exists, discarded printed circuit boards to be processed and welded with electronic parts are put in a swivel which is provided with a plurality of filtering holes and immersed in the heat conducting medium, the temperature is risen until the soldering tin is melted, after the temperature is constant, the swivel is rotated to centrifugally separate solid and liquid, the soldering tin leaks from the filtering holes, deposits at the bottom and is cooled into ingot, and the electronic parts are separated from the discarded printed circuit boards correspondingly. The method for recycling the soldering tin of discarded printed circuit boards has no environmental pollution, low energy consumption and high efficiency, and can create good condition for high-efficiently recycling other metals.
Owner:CENT SOUTH UNIV

Sludge deep-dehydration technology

The invention discloses a sludge deep-dehydration technology. The technology comprises hydro-thermal reaction, flocculation conditioning and mechanical dehydration. The hydro-thermal reaction process comprises adding 5-13kg of a surfactant into each ton of dry sludge, putting the surfactant and sludge into a hydro-thermal reactor and carrying out a sludge hydro-thermal reaction process at a temperature of 120-160 DEG C under relative pressure of 0.5-1.2 MPa. The sludge deep-dehydration technology has dehydrated sludge water content of 55% or less, greatly reduces sludge follow-up treatment difficulty and reduces a sludge follow-up treatment cost.
Owner:POWERCHINA ZHONGNAN ENG +1

Process method for preparing synthesis gas by using zero carbon or negative carbon emission system

The present invention discloses a process method for preparing synthesis gas by using a zero carbon or negative carbon emission system. The process method comprises that: 1) first raw material gas is subjected to desulfurization, steam is matched, pressurization and heating are performed, a reaction is performed to obtain first conversion gas, the first conversion gas is output, the output first conversion gas and pure oxygen are mixed and then enter a two-stage furnace to react so as to obtain second conversion gas, and the second conversion gas is output from the two-stage furnace; 2) second raw material gas is subjected to desulfurization, pressurization and heating and then is mixed with pure oxygen and carbon dioxide, then a reforming reaction is performed to obtain third conversion gas, and the third conversion gas is output from the reforming reactor; and 3) the second conversion gas is subjected to heat recovery and then is mixed with the third conversion gas to form crude synthesis gas, wherein the crude synthesis gas is adopted as the subsequent synthesis gas with or without a decarbonization device. According to the present invention, the greenhouse gas emission is reduced, the carbon efficiency is improved, the recycling of the carbon resources of the energy source chemicals is achieved, the hydrogen-carbon ratio of the synthesis gas achieves the ideal ratio of the downstream process requirement, and the zero carbon or negative carbon emission of the whole system is achieved.
Owner:SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI +1

Selentellurium single crystal compound optical fiber and manufacturing method thereof

The invention discloses a selentellurium single crystal compound optical fiber and a manufacturing method of the selentellurium single crystal compound optical fiber. The selentellurium single crystal compound optical fiber can be applied to efficient light frequency multipliers, infrared laser conduction, holographic data storage, raman laser, light sources and other fields. The fiber core of the selentellurium single crystal compound optical fiber is formed by single crystal selentellurium compounds, and an optical fiber cladding is formed by multi-component phosphate glass. According to the manufacturing method of the selentellurium single crystal compound optical fiber, the forming process of optical fibers of a wave-guiding structure and the optical fiber single crystallizing process are separated, and namely the fiber forming process and the single crystallizing process are separated. Accordingly, the control conditions of manufacturing the single crystal optical fiber are simplified, and large-length continuous single crystal optical fibers with high quality can be easily manufactured.
Owner:SOUTH CHINA UNIV OF TECH

High-efficiency composite hydrolysis acidification pool used for sludge reduction

Sludge is a byproduct of sewage treatment, a great deal of sludge generated causes the increasingly severe secondary pollution, and the sludge treatment cost is high, so the sludge becomes a bottleneck problem in the urban sewage treatment industry. The invention provides a high-efficiency composite hydrolysis acidification pool technique used for sludge reduction, and belongs to the technical field of water treatment. The technique can be used as a pretreatment process of two-stage biochemical treatment in a sewage plant or independently used as a sludge reduction process. A high-efficiency mass transfer guiding plate and a turbulent generator are arranged in the pool to enhance the mass transfer effect of solid-liquid two-phase reaction; meanwhile, a filler is filled in the pool, so biomass in the reactor is increased, the efficiency of degrading residual sludge by hydrolysis acidification bacteria is improved, and the sludge to be finally treated is reduced.
Owner:王鹤立

Preparation and application of nano-micelle imaging agent for cervical cancer sentinel node

The invention relates to preparation and application of a nano-micelle imaging agent for a cervical cancer sentinel node. A nanometer imaging agent high polymer PEG-PLGA is used as a carrier, micelleparticles are formed through polymerization, indocyanine green is loaded inside, TMTP1 targeting peptide is modified on the surface of a micelle, and maleic amide connected with a surface hydrophilicgroup PEG end of the micelle is connected with a sulfhydryl group of TMTP1 with ring formation by amido bonds at the head and the tail. The near infrared fluorescence nano-micelle diagnosis reagent provided by the invention can image the cervical cancer sentinel node in real time, can distinguish whether tumor cell metastasis occurs or not, and offers the assistance for the imaging diagnosis of intraoperative lymph nodes of cervical cancer in clinic in the future and the guidance of individualized treatment of tumor patients.
Owner:WUHAN KDWS BIOLOGICAL TECH CO LTD

Microemulsion rapid precipitation method for preparing amorphous nickel hydroxide electrode active material

The invention relates to a method for preparing amorphous nickel hydroxide electrode active material, which comprises using nickel salt, alkali and hydroxides of doped metallic elements as the main raw material, using hexadecyl trimethyl-ammonium bromide, normal butyl alcohol, cyclohexane as the auxiliary raw material, and employing micro emulsion fast precipitation method. The nickel electrode synthesized from the material can be used for forming cells with high specific capacity, stable operating voltage and better circularity property.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY

Device and method for producing biogas by distillers' grain fermentation

The invention discloses a device and a method for producing biogas by distillers' grain fermentation. The device comprises a mixing tank, a circulating pump, a reaction tank and a return pipe, wherein the mixing tank, the circulating pump and the reaction tank are sequentially connected through a pipeline, and the reaction tank is connected with the mixing tank through the return pipe. The reaction tank is provided with a water distributor, a first reaction chamber, a primary three-phase separator, a second reaction chamber, a secondary three-phase separator, a flow guide pipe, a drain port and an exhaust port, and the mixing tank is provided with a heating device, an emptying port, a stirrer and a feed port. The method for producing the biogas by distillers' grain fermentation includes the steps: 1) preliminarily fermenting distillers' grain wastewater in the mixing tank; 2) performing two-stage anaerobic fermentation treatment for the distillers' grain wastewater in the reaction tank. The device is stable in running, easy to control, less in discharged sludge quantity and capable of generating the biogas with the methane content of 60% or more. The device and the method are applicable to treating high-concentration distillers' grain wastewater, less in sludge loss, good in organic matter removing effect and low in running cost.
Owner:广州市金龙峰环保设备工程股份有限公司

Phase transition synthesizing method for doping lithium manganate powder

The invention relates to a method of synthesizing active material of lithium battery anode, specially a phase transfer synthesizing method that synthesizes doped LiMn2O4 powder by doping one or two of the elements: Ni, Ca, Co, Ti, Ga, etc. (1) using lithium acetate, Mn salt and nitrates of doping elements as main material, using organic white oil and CTAB as auxiliary material; (2) preparing the main material according to chemical formula of object product into solution in a reaction kettle, and making synthetic reaction by stirring at 70deg.C-80deg.C; (3) adding CTAB and white oil in a proper bulk ratio to resultant system, keeping temperature and stirring for 0.5 hour, then placing still, separating phase, discarding water phase, drying, cauterizing at 800 deg.C-850 deg.C for 12-15 hours in box electric cooker, cooling with the cooker, and then grinding and scattering to obtain the doped-LiMn2O4 active powder material with stale structure and good electrochemical performance. The method is simple to operate, and the synthetic product has good electrochemical performance.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY

Aluminum nitride ceramic plate metalization method

The invention relates to an aluminum nitride ceramic plate metalization method, which comprises the following steps of cleaning the surface of an aluminum nitride ceramic plate; forming a titanium conduction layer with the set thickness on the surface of the aluminum nitride ceramic plate; using the aluminum nitride ceramic plate subjected to titanium plating on the surface as a cathode; putting the aluminum nitride ceramic plate into an electrolytic bath; using refined copper as an anode; putting the aluminum nitride ceramic plate into a heat treatment furnace; then, performing heating and temperature rise; seeping the titanium conducting layer to the aluminum nitride to form a TiN metallurgical transition layer and simple substance aluminum; continuously performing heating and temperature rise; sending ultrasonic waves to the aluminum nitride ceramic plate through a ultrasonic wave generating device, so that the liquid-state simple substance aluminum vibrates and flows out; stabilizing the TiN metallurgical transition layer; performing further heating and temperature rise; seeping the titanium conducting layer to the copper plating layer to form a TiCu metallurgical transition layer. Compared with the prior art, the method provided by the invention has the advantages that the liquid-state simple substance aluminum in the TiN metallurgical transition layer vibrates, so that the liquid-state simple substance aluminum melts and is discharged out of the aluminum nitride ceramic plate; the connection intensity of the copper plating layer and the titanium conducting layer is improved; the product quality and the finished product rate are improved.
Owner:FUJIAN HUAQING ELECTRONICS MATERIAL TECH

Method for treating eutrophication substances in sewage through artemia culture and water purifying system

The invention provides a method for treating eutrophication substances in sewage through artemia culture. The method includes the following steps that S1, a treating pond is built, and salt lake brine is injected into the treating pond; S2, to-be-treated sewage is injected into the treating pond in a continuous or semi-continuous mode, and the net evaporation speed of a water body in the treating pond and the injection speed of the to-be-treated sewage are kept same; S3, the salinity of the water body in the treating pond is adjusted and kept 6 baume to 14 baume, nutrient substances in sewage are used, microalgae, microorganisms and the like are cultured to serve as baits of artemia, artemia in the water body in the treating pond is cultured, and nitrogen and phosphorus eutrophication substances are removed in sewage from water by catching artemia. By means of the method, it is achieved that the eutrophication substances in sewage are efficiently and continuously purified, zero discharging of the eutrophication substances is achieved, artemia produced in the water purifying process is high-quality baits for culturing animals and raw materials in cooperation with feed, and objective economic benefits can be created.
Owner:天津津枫丰年虫科技有限公司

Charging method and electronic device

ActiveCN105811033AExtend cycle lifeThe requirements of the actual application scenario meet theSecondary cells charging/dischargingTime frameCharge voltage
The invention discloses a charging method and an electronic device. The charging method comprises the following steps of determining that a current charging mode of a battery of the electronic device is a first charging mode at a current moment; acquiring M charging voltages of the battery within a preset time frame before the current moment, wherein arbitrary one of the M charging voltages is a charging voltage corresponding to a moment when the electronic device is separated from a power supply; determining N charging voltages of which the voltage values are lower than a preset voltage value from the M charging voltages, wherein N is an integer less than or equal to M; and controlling the current charging mode to be adjusted to a second charging mode from the first charging mode if N is greater than a preset value, wherein the second charging mode is a mode that the fully-charged voltage of the battery is smaller than the voltage of a battery core. With the technical scheme provided by the embodiment of the invention, the technical problem of relatively single condition existing in the switching charging mode of the electronic device in the prior art is solved.
Owner:LENOVO (BEIJING) CO LTD

Method for comprehensively recycling sodium, aluminum and iron from red mud

The invention discloses a method for comprehensively recycling sodium, aluminum and iron from red mud. The red mud is mixed with an additive to obtain a raw material, the mixed raw material is subjected to calcination to obtain clinker, the clinker is added to an alkaline adjustment liquid for leaching, slid-liquid separation is performed, and leachate containing aluminum and sodium and magnetic leaching residues are obtained; the additive is a mixed additive composed of a calcium-series additive, a magnesium-series additive and a sodium-series additive. According to the technical scheme, no reducing agent needs to be added, hematite or hematite is converted as magnesioferrite with high magnetism through the magnesium-series additive and enters the leaching residues, and then an iron ore concentrate product is obtained through magnetic separating. In the technical scheme, the atmosphere control process and generation of a great quantity of polluting atmosphere in the current iron recycling process are avoided. In the method, the aluminum recycling rate is 85%, the sodium recycling rate is 92% or above, the sodium content in final residues is lowered to 1% or below, the iron grade of the iron ore concentrate is 50-55%, and the recycling rate is about 70%.
Owner:CENT SOUTH UNIV

Industrial storage and reutilization method of anaerobic ammonia oxidizing bacteria

The invention provides an industrial storage and reutilization method of anaerobic ammonia oxidizing bacteria and belongs to the field of biological treatment of wastewater. The method comprises the following three steps of selecting the anaerobic ammonia oxidizing bacteria, storing and recovering activity: step 1, taking out active sludge from different parts of an anaerobic ammonia oxidizing reactor which is operated normally, and uniformly mixing; introducing high-purity argon gas; selecting the suitable anaerobic ammonia oxidizing bacteria; step 2, precipitating and washing the selected bacteria and then adding a storage matrix; introducing the high-purity argon gas, and selecting environment conditions including temperature, a matrix concentration and the like in a storage process according to different storage periods; step 3, carrying out activity recovery operation of controllable decompression and temperature rising, and step load on the stored anaerobic ammonia oxidizing bacteria, so as to rapidly obtain high-activity anaerobic ammonia oxidizing bacteria capable of being industrially reutilized. According to the industrial storage and reutilization method, high-activity storage of the anaerobic ammonia oxidizing bacteria is realized and operation factors are control conditions which are easily industrially realized; the industrial storage and reutilization method is simple and convenient to operate and low in cost, and has a very high application value.
Owner:BEIJING MUNICIPAL RES INST OF ENVIRONMENT PROTECTION

Process method for preparing synthesis gas using zero-carbon or negative-carbon emission system

The present invention discloses a process method for preparing synthesis gas by using a zero carbon or negative carbon emission system. The process method comprises that: 1) first raw material gas is subjected to desulfurization, steam is matched, pressurization and heating are performed, a reaction is performed to obtain first conversion gas, the first conversion gas is output, the output first conversion gas and pure oxygen are mixed and then enter a two-stage furnace to react so as to obtain second conversion gas, and the second conversion gas is output from the two-stage furnace; 2) second raw material gas is subjected to desulfurization, pressurization and heating and then is mixed with pure oxygen and carbon dioxide, then a reforming reaction is performed to obtain third conversion gas, and the third conversion gas is output from the reforming reactor; and 3) the second conversion gas is subjected to heat recovery and then is mixed with the third conversion gas to form crude synthesis gas, wherein the crude synthesis gas is adopted as the subsequent synthesis gas with or without a decarbonization device. According to the present invention, the greenhouse gas emission is reduced, the carbon efficiency is improved, the recycling of the carbon resources of the energy source chemicals is achieved, the hydrogen-carbon ratio of the synthesis gas achieves the ideal ratio of the downstream process requirement, and the zero carbon or negative carbon emission of the whole system is achieved.
Owner:SHANGHAI ADVANCED RES INST CHINESE ACADEMY OF SCI +1

Preparation method of high-performance solid buoyancy material

The invention relates to a preparation method of a high-performance solid buoyancy material and belongs to the technical field of materials. Iron chloride is mixed in sodium silicate for crosslinkingforming and pyrolysis, pores formed in sodium silicate during pyrolysis and iron particles formed in the pores are taken as catalysts, nanofiber is grown in situ in a hollow glass microsphere matrix,the root part of the fiber is embedded in a matrix, the head extends out of the matrix, the fiber is closely and seamlessly combined with the matrix, the product is taken as filler, the high-performance solid buoyancy material is prepared, the fiber can slide in a local range of the matrix when the material is impacted by external force and broken, a toughening function is produced on the hollow glass microsphere matrix, and the prepared high-performance solid buoyancy material has good impact resistance. The high-performance solid buoyancy material is prepared with a vacuum impregnation method, equipment is simple, conditions are easy to control, the obtained high-performance solid buoyancy material has uniform quality, and hollow glass microspheres are high in filling rate and have goodthermal resistance.
Owner:皮蒙

Silver plated optical fiber Raman probe and preparation method thereof

ActiveCN107841732AExcellent scattering effectEnables real-time in situ portable detectionMaterial nanotechnologyRaman scatteringSilver plateSolvent
The invention discloses a silver plated optical fiber Raman probe and a preparation method thereof, and belongs to the technical field of medical, chemical and environmental detection and food detection. A one-step solvothermal method is adopted, water or ethylene glycol is used as a solvent, optical fibers which are simply pretreated are soaked into a precursor solution of silver to be subjectedto solvothermal reaction, and the optical fiber Raman probe of which the surface is loaded with Ag nano particles is obtained. The silver nano particles prepared through the preparation method are controllable and adjustable in shape and size, operation is easy, and growing of the silver nano particles and loading, on the optical fibers, of the silver nano particles can be further completed. Compared with traditional Raman enhanced substrates, the excellent surface enhancement Raman scattering effect of the silver nano particles are sufficiently combined with the optical conduction effect of the optical fibers, the size and shape of the obtained silver nano particles are adjusted and controlled, the obtained silver plated optical fiber Raman probe shows super-high sensitivity and selectivity when detecting low-concentration materials, can conduct real-time detection under the severe environment, the remote environment and other special environments, and is high in practicability.
Owner:WUHAN UNIV OF TECH

Long-acting luminous paint and its preparation method

The invention discloses a long-acting luminous paint which is composed of the following components by mass: 40-60 parts of acrylic resin, 1-3 parts of bentonite, 10-12 parts of xylene, 2-4 parts of butyl acetate, 30-38 parts of luminous powder, and 0.5-2 parts of assistant. The invention also discloses a preparation method of the long-acting luminous paint, and the preparation method comprises the following steps: premixing the acrylic resin, bentonite, butyl acetate and xylene for high speed dispersion for 30 minutes, then stirring to adding toluene, the luminous powder and the assistant for adjusting color and viscosity, and finally filterring impurities to obtain the long-acting luminous paint. The prepared luminous paint has infinite times of luminous function.
Owner:CHANGSHU FANGTA COATING CHEM

Molybdenum trioxide/polyaniline composite electrode material with layered structure and preparation method thereof

The invention discloses a preparation method for a molybdenum trioxide / polyaniline composite electrode material with a layered structure. The preparation method comprises the following steps: S1, reacting molybdenum trioxide with organic amine in an alcoholic solvent under stirring to produce a white precipitate, and carrying out pumping filtration, washing and pressure-reduced drying so as to obtain an organic amine-intercalated molybdenum trioxide precursor; S2, reacting the organic amine-intercalated molybdenum trioxide precursor with aniline in an organic acid solvent under stirring to produce a light pink precipitate, and carrying out pumping filtration, washing and pressure-reduced drying so as to obtain an aniline-intercalated molybdenum trioxide compound; and S3, heating the aniline-intercalated molybdenum trioxide compound in an air atmosphere to 100 to 150 DEG C at a heating rate of 0.5 to 5 DEG C / min, carrying out heat insulation treatment for 72 to 120 h, then carrying outslow cooling to room temperature so as to obtain the molybdenum trioxide / polyaniline composite electrode material with the layered structure. The molybdenum trioxide / polyaniline composite electrode material prepared by using the method has no problems of poor conductivity, poor cyclic performance and poor rate performance of conventional molybdenum trioxide negative electrode materials.
Owner:SHANXI CHANGZHENG POWER TECH CO LTD

A method and device for controlling playback of a speaker

The embodiment of the present invention discloses a method and device for controlling playback by speakers, wherein the method for controlling playback by speakers may include: performing infrared detection on the playback area of ​​the speakers during the playback of the speakers; There is a user in the area, and an action track of the user is monitored; when the action track is detected, a control instruction corresponding to the action track is acquired; and the speaker is controlled according to the control instruction. By adopting the embodiment of the present invention, the user can control the playback of the sound box according to the action, which simplifies the control conditions and improves the user experience.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Treatment technology for strengthening dehydration performance of printing and dyeing sludge through hydrothermal carbonization

The invention discloses a treatment technology for strengthening dehydration performance of printing and dyeing sludge based on hydrothermal carbonization. The treatment technology comprises the following steps: (1) adding ferric sulfate into the printing and dyeing sludge and carrying out hydrothermal reaction for 1 to 5 hours at 180 to 260 DEG C under the relative pressure of 0.6 to 1.7MPa, wherein the adding amount of the ferric sulfate is 0.1 to 1 part by taking the mass part of solids in the printing and dyeing sludge as 1; (2) dehydrating the sludge obtained by step (1). The method disclosed by the invention is used for treating the printing and dyeing sludge; the removal rate of organic matters in the printing and dyeing sludge is high and the dehydration performance of the sludge is better; the moisture content of the printing and dyeing sludge is remarkably reduced; the treatment technology has the advantages of simple technology, low equipment requirements and convenience foroperation and provides an important pre-treatment technology for subsequent treatment and disposal of the printing and dyeing sludge.
Owner:NANJING UNIV OF TECH

Sound box play control method and apparatus

Embodiments of the present invention disclose a sound box play control method and apparatus. The sound box play control method can comprise: in a play process of a sound box, performing infrared detection on a play region of the sound box; when detecting that a user exists in the play region, monitoring an action track of the user; after monitoring the movement track, acquiring a control instruction corresponding to the action track; and performing control on the sound box according to the control instruction. With adoption of the sound box play control method and apparatus disclosed by the embodiments of the present invention, the play of the sound box can be controlled by the user according to an action, so that a control condition is simplified, and user experience is improved.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD

Method for extraction and purification of corn silk general flavone, and use of corn silk general flavone

InactiveCN102309694BBest Adsorption Separation ConditionsHigh purityMetabolism disorderPlant ingredientsPurification methodsClinical efficacy
The invention relates to a method for extraction and purification of corn silk general flavone, and a use of corn silk general flavone. The method adopts corn silk as a raw material and comprises the following steps of raw material snipping, extraction, condensation and purification. The method is characterized in that the extraction step comprising carrying out extraction by an ethanol solution with concentration of 60% at a temperature of 60 DEG C for 3 hours, wherein a solid-liquid ratio is 1: 20; and the purification step comprising purifying crude extract by a HPD-100 macroporous resin. The prepared corn silk general flavone is added into rabbit forage according to an addition ratio of 2% and has substantial effects of reducing blood fat, wherein P is less than or equal to 0.1. The method has simple operation steps and low costs, is suitable for practical production operation, and can develop integrated utilization of agricultural and sideline products and promote economic prosperity in the country. The method for extraction and purification of corn silk general flavone belongs to the field of corn silk general flavone research and lays the foundation for good development and utilization of corn silk and research of clinical curative effect basis of corn silk general flavone.
Owner:ANHUI AGRICULTURAL UNIVERSITY +1

A method for connecting aluminum nitride ceramic plate and metal based on PVD deposition method

The invention discloses a method for connecting an aluminum nitride ceramic plate and metal based on PVD deposition, The method includes the following steps that, firstly, a layer of titanium film isformed on the surface of the aluminum nitride ceramic plate through PVD deposition, a silver-tin layer with a certain thickness is deposited, then a clamping die is used for combining the coated surface of the aluminum nitride ceramic plate with a metal plate (block) coated with copper film and applying certain pressure, finally the aluminum nitride ceramic plate combined with the metal plate is placed in a vacuum annealing furnace for heating and heat preservation, and the high-strength connection between the aluminum nitride ceramic plate and the metal can be achieved. After the high-strength connection between the aluminum nitride ceramic plate and the metal is achieved, a traditional ceramic-metal connection process is simplified, the problem of air tightness of the bonding surface caused by oxide bonding in a direct copper cladding method is avoided, and the thermal conductivity and heat dissipation performance of the substrate are improved.
Owner:苏州博志金钻科技有限责任公司

A tremella fungus strain and its application in the production of tremella polysaccharide

In the present invention, a Tremella fuciformis strain (Tremella fuciformis) was screened out, the strain name is XY, and it was deposited in the General Microbiology Center of the China Microbiological Culture Collection Management Committee. The preservation date is April 25, 2019, and the preservation number is CGMCC No.17675. The present invention also provides the application of the above Tremella fungus strains in the production of Tremella polysaccharides, the main process of which is to insert the seed liquid prepared from CGMCC No. 17675 into a solid-state fermentation medium for fermentation to obtain a fermentation liquid. It can prepare high-molecular-weight polysaccharides with a molecular weight of 1000-1500kDa and low-molecular-weight polysaccharides with a molecular weight of 100-300kDa. The total output can reach 15-25g / L, and the protein content is less than 0.3%. Compared with the liquid fermentation method, it has a significant cost advantage. Tremella It has a good application prospect in the industrial production of polysaccharides.
Owner:NANJING TECH UNIV

Method for promoting separation of valuable metals and calcic gangue minerals in waste residue

The invention discloses a method for promoting separation of valuable metals and calcic gangue minerals in waste residue. The method comprises the following steps of: based on calcic waste residue as a treatment object, first, generating anhydrous calcium sulfate crystals by calcic gangue minerals in waste residue through hydrothermal activation; then, through hydrating and crystallizing regulation, hydrating anhydrous calcium sulfate crystals to calcium sulphate dihydrate crystals and enabling the calcium sulphate dihydrate crystals to grow to hundreds of microns; and then, separating the crystals and other substances by a physical separating method. The hydrothermal activating technology comprises the following steps of: adding an additive; and controlling hydrothermal temperature, hydrothermal time, stirring speed and liquid-solid ratio. The hydrating regulation technology comprises the following steps of: adding an excitant, controlling hydrating time, adding crystal seeds, controlling aging time and the like. According to the method provided by the invention, calcium and other valuable metals in waste residue can be recycled at the same time, so that the method is beneficial to realizing reduction, harmlessness and reclamation of waste residue.
Owner:湖南益石科技有限公司

Metallization method of aluminum nitride ceramic plate

The invention relates to an aluminum nitride ceramic plate metalization method, which comprises the following steps of cleaning the surface of an aluminum nitride ceramic plate; forming a titanium conduction layer with the set thickness on the surface of the aluminum nitride ceramic plate; using the aluminum nitride ceramic plate subjected to titanium plating on the surface as a cathode; putting the aluminum nitride ceramic plate into an electrolytic bath; using refined copper as an anode; putting the aluminum nitride ceramic plate into a heat treatment furnace; then, performing heating and temperature rise; seeping the titanium conducting layer to the aluminum nitride to form a TiN metallurgical transition layer and simple substance aluminum; continuously performing heating and temperature rise; sending ultrasonic waves to the aluminum nitride ceramic plate through a ultrasonic wave generating device, so that the liquid-state simple substance aluminum vibrates and flows out; stabilizing the TiN metallurgical transition layer; performing further heating and temperature rise; seeping the titanium conducting layer to the copper plating layer to form a TiCu metallurgical transition layer. Compared with the prior art, the method provided by the invention has the advantages that the liquid-state simple substance aluminum in the TiN metallurgical transition layer vibrates, so that the liquid-state simple substance aluminum melts and is discharged out of the aluminum nitride ceramic plate; the connection intensity of the copper plating layer and the titanium conducting layer is improved; the product quality and the finished product rate are improved.
Owner:FUJIAN HUAQING ELECTRONICS MATERIAL TECH

Technique and device for effectively recovering waste printed circuit boards solder

The invention relates to a technology for high-efficiently recycling soldering tin of discarded printed circuit boards, and a device. In a sealed system, in which liquid heat conducting medium exists, discarded printed circuit boards to be processed and welded with electronic parts are put in a swivel which is provided with a plurality of filtering holes and immersed in the heat conducting medium, the temperature is risen until the soldering tin is melted, after the temperature is constant, the swivel is rotated to centrifugally separate solid and liquid, the soldering tin leaks from the filtering holes, deposits at the bottom and is cooled into ingot, and the electronic parts are separated from the discarded printed circuit boards correspondingly. The method for recycling the soldering tin of discarded printed circuit boards has no environmental pollution, low energy consumption and high efficiency, and can create good condition for high-efficiently recycling other metals.
Owner:CENT SOUTH UNIV

Method for detecting mercury ions based on triangular silver nanosheets

PendingCN114527094AThe preparation method and control conditions are simpleEasy to operateMaterial analysis by optical meansStandard curvePhotochemistry
The invention relates to a method for detecting mercury ions based on triangular silver nanosheets, and the inventor designs and synthesizes a triangular silver nanosheet solution which is used as a mercury ion photo-thermal sensor for detecting the concentration of the mercury ions. The detection method comprises the steps of preparing a triangular silver nanosheet solution, drawing a standard curve, detecting a to-be-detected solution and the like. The preparation method and control conditions of the triangular silver nanosheet are relatively simple, and the grown triangular silver nanosheet can be obtained only by controlling the adding amount of the growth solution. The detection method disclosed by the invention is simple to operate, and compared with the existing detection method, the method disclosed by the invention can realize on-site, rapid and accurate detection of mercury ions, is low in cost and convenient to carry, and is not interfered by other ions and colored substances.
Owner:CHANGZHOU UNIV

Microemulsion synthesizing method for doping nanometer multiphase alpha-Ni(OH)2

The invention relates to a synthesizing method of active material of metal hydroxide nickel-battery anode, especially a microemulsion synthesizing method that prepares nano diphase alpha-Ni(OH)2 superfine powder by doping chemical elements. (1) using nickel salt, alkali and sodium carbonate as well as sulphates of doping elements as main raw materials and AOT, organic solvent and cyclohexane as auxiliary raw materials; (2) placing raw materials in a reaction kettle in a certain proportion and in sequence, and making synthetic reaction on a certain condition; (3) placing still, layering, filtering, washing, drying, grinding and scattering the resultant to obtain it. The synthesizing method is simple and convenient to operate and easy to control reacting condition, the synthetic product has uniform crystal grains, able to reach nano level, having good electrochemical performance and suitable to act as active material of metal hydroxide nickel-battery anode.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY
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