12results about How to "Complete restoration" patented technology

The invention discloses a distributed optical fiber vertical seismic DAS-VSP data capacity optimization method. According to the method, firstly, the slope difference between adjacent data points in a data point set is calculated, judgment is carried out according to a preset threshold value, redundant data points which have weak influence on the overall seismic signal trend form can be accurately recognized and deleted, and therefore the scale of the data set is remarkably reduced at the source, and first-layer compression is achieved. And then, carrying out differential coding processing on the optimized data point set after redundancy is removed, and only storing or transmitting a difference value between adjacent key data points to replace an original large value, so that the value representation range of the data is further reduced, and efficient compression of a second layer is realized. Finally, the initial data point and the differential set are packaged into a compact data frame, so that the total data amount is greatly reduced, and the resource occupation of the storage space and the network bandwidth is remarkably reduced.

The utility model discloses a substitute body for dental implant, the substitute body is made of resin material and comprises a butt joint part, a positioning section and a fixing section, the butt joint part is arranged inside the fixing section, the butt joint part is connected with an abutment, the positioning section is connected with a dental cast body, the positioning section, the connecting part and the fixing section are arranged along the same central axis, and the butt joint part is connected with the positioning section. A butt joint groove is formed in the center of the butt joint part, the butt joint groove comprises a transition section and a clamping groove with the cross section being in a regular polygon shape, arc-shaped protrusions are arranged on the outer surface of the positioning section, the number of the protrusions is the same as that of the sides of the clamping groove, and the positions of the sides of the clamping groove correspond to the positions of the protrusions in a one-to-one mode. The oral cavity replacement device is reasonable in structural design, conditions in the oral cavity of a patient can be restored more sufficiently after the base is installed on the replacement body, and the replacement body can be installed and adjusted more conveniently; a dentist technician accurately restores the condition in the oral cavity of a patient through the replacement body, and the manufactured false tooth is excellent and is more adaptive to the oral cavity of the patient.

This invention discloses a wastewater treatment agent for thallium-containing wastewater and its preparation method, belonging to the field of environmental engineering technology. It features a large specific surface area and porosity, abundant active sites, and a molecular sieve effect. In its spatial structure, the wastewater treatment agent has a gradient porous structure, with a large-pore inner layer, a small-pore outer layer, and a middle layer containing manganese dioxide sites with oxidizing properties. The difference in pore size between the inner and outer layers protects the internal oxidizing component, manganese dioxide, from interfering with the active sites due to byproducts. Furthermore, the gradient porous structure increases adsorption and improves thallium removal. The modified polystyrene microspheres in this invention contain sulfonic acid groups on their surface. After coordination interaction with manganese ions, they can bind to positively charged thallium ions through electrostatic attraction, achieving the adsorption and enrichment of thallium ions.

The application belongs to the technical field of metal powder preparation, and particularly relates to high-purity rhenium powder and a preparation method thereof. The high volatility of rhenium oxide is utilized, efficient volatilization of rhenium oxide is realized under vacuum conditions, and the high activity of hydrogen radio frequency plasma is utilized to rapidly and completely reduce the rhenium oxide vapor into high-purity rhenium powder, so that the reduction reaction efficiency is significantly improved, efficient and clean preparation of rhenium powder is realized, the problem of impurity introduction in the traditional reduction method can be avoided, and the product purity and particle size can meet the application requirement of high-end fields.

The invention discloses a sewage and wastewater nitrate nitrogen reduction system based on friction power generation, and relates to the technical field of water treatment and resource recovery. The system comprises a pretreatment module, a biological nitrification module, an ammonia conversion module and an ammonia salt recovery module which are connected in sequence. The pretreatment module is used for removing suspended matters and organic matters; the biological nitrification module is used for converting ammonia nitrogen and organic nitrogen into nitrate nitrogen; the ammonia conversion module is provided with a friction power generation reduction unit, charges are generated through friction between water flow and a high polymer material flow channel to form a reduction electric field, and nitrate nitrogen is directly reduced into ammonia nitrogen; and the ammonia salt recovery module recovers an ammonia salt product through an acid adding crystallization process. The fluid kinetic energy is utilized to drive the reduction reaction, external energy and carbon sources are not needed, pollutants are converted into valuable ammonia salt fertilizer, and conversion from'end treatment 'to'resource recovery' is achieved. The system is low in operation cost, high in impact load resistance and suitable for high-nitrogen industrial wastewater treatment in photovoltaic, food processing and the like.

The invention discloses a preparation method of lithium sulfide, a solid-state electrolyte and a solid-state battery, the lithium sulfide is used for preparing the solid-state electrolyte, and the preparation method comprises the following steps: uniformly mixing lithium sulfate, an organic carbon source and a high-molecular polymer in a solvent to obtain a mixed solution; wherein the mass ratio of the lithium sulfate to the organic carbon source is 1: (0.7-1), and the mass ratio of the organic carbon source to the high-molecular polymer is (0.7-1): (0.1-2.5); the ratio of the mass sum of the residual carbon amount of the organic carbon source and the residual carbon amount of the high-molecular polymer to the mass of the lithium sulfate is (0.2-0.25): 1; carrying out spray drying on the mixed solution to obtain a precursor material; and sintering the precursor material to obtain the product lithium sulfide. The sulfide solid electrolyte prepared by the preparation method is high in purity and low in carbon impurity content.

This invention provides a method for recovering valuable elements from NdFeB waste through co-reduction smelting of electronic waste. The method involves mixing powdered NdFeB waste and fine-grained electronic waste with a slagging agent and a solid reducing agent, and then using a top-blown smelting furnace to reduce and smelt the mixture. By controlling the conditions of the reduction process, the oxides of copper and iron in the mixture are reduced to metallic copper and metallic iron. These two metals then aggregate with rare and precious metals such as gold and silver from the electronic waste to form a copper-iron precious metal alloy. Rare earth oxides are not reduced and remain in the slag layer. The copper-iron precious metal alloy particles are denser than the rare earth slag and sink rapidly to the bottom of the furnace. After settling and stratification, the copper-iron precious metal alloy melt and the rare earth slag are discharged separately from the metal outlet and slag outlet, respectively. This method achieves the simultaneous recovery of rare earth elements from NdFeB waste and copper, gold, and silver from electronic waste. The process is short, energy-efficient, and offers significant economic and environmental benefits.

The invention discloses a coal-ammonia co-combustion control system and method based on ammonia cracking ignition, and belongs to the technical field of combustors. The coal-ammonia co-combustion control system comprises an initial operation module used for obtaining a coal-ammonia co-combustion execution label; the monitoring evaluation module is used for performing analysis based on the coal-ammonia co-combustion execution label, if the coal-ammonia co-combustion execution label is normal in co-combustion, performing no execution processing, and if the coal-ammonia co-combustion execution label is abnormal in co-combustion, performing analysis to obtain a co-combustion abnormality tracking label, and marking the monitoring area with the coal-ammonia co-combustion execution label being abnormal in co-combustion as a monitoring tracking area; the mixed combustion adjusting module is used for executing corresponding correction processing; and the adjustment verification module is used for obtaining a correction verification label, if the correction verification label is corrected to be effective, secondary correction processing is not executed, otherwise, the adjustment verification module returns to the multi-fuel combustion adjustment module to execute secondary correction processing until the correction verification label is corrected to be effective.

The application belongs to the field of catalytic materials, and specifically discloses a preparation method of a nano high-entropy alloy material and application of the material in oxygen electrocatalysis. The preparation method is as follows: a multi-metal organic complex, a reactive metal and a molten salt are mixed and calcined, and then subjected to simple water washing treatment and alkali washing modification treatment to obtain the nano high-entropy alloy material; the multi-metal organic complex is a complex formed by a metal M source and an organic complexing agent, and the metal M contains five or more than five kinds of Fe, Co, Ni, Cr, Mn, Cu, V, Mo, Ti, Au, Ag, Pt, Pd, Ru, Ir and Rh. The application also includes the material prepared by the preparation method and application of the material in OER / ORR catalysis. The material prepared by the method has excellent OER / ORR catalytic activity and stability.

The application discloses a kind of UN powder's quick preparation method, solve the carbon-thermal reduction-nitriding reaction method in prior art difficult to obtain high-purity UN powder, arc smelting method high cost, long cycle problem.A kind of UN powder's quick preparation method of the application, UO2 powder is reduced into metal uranium using metal reduction method, then using reaction heat makes metal uranium and nitrogen gas nitriding reaction, obtains UN powder.The application is more efficient, the reaction process is faster, more sufficient, UN production cycle is compared with arc smelting method greatly shortened, even shorter than carbon-thermal reduction method, can realize the batch preparation of high-purity UN powder in very short time.

The present application relates to a kind of vanadium-aluminum alloy and its preparation method.The method comprises: after drying, vanadium oxide, slagging agent and aluminum-calcium alloy particles are mixed uniformly, the vanadium oxide is the mixture of vanadium pentoxide and di vanadium trioxide;Preheating;Take 10wt%-20wt% of mixed material to initiate in-situ composite thermal reduction reaction, form 1600℃-1950℃ high-temperature molten pool;The remaining material is pressed into the material ball with a diameter of 1.0-3.0 cm under 5-20 MPa pressure, and the obtained material ball is continuously added to the molten pool to maintain the temperature for reaction, while the reduction slag and alloy melt are separated;Cooling and deslagging to obtain vanadium-aluminum alloy ingot.The present application uses aluminum-calcium alloy particles as reducing agent, and utilizes its in-situ slagging function, combined with different valence vanadium oxide to control reaction heat, and continuous feeding process, realizes accurate control of composition, significant reduction of inclusions, efficient slag-gold separation, and the prepared vanadium-aluminum alloy has very low oxygen and nitrogen impurities, and the process flow is short, the cost is low, and it is suitable for aerospace-grade titanium alloy production.

The invention provides a fluidized repair roasting regeneration method for a new energy lithium iron phosphate battery positive electrode material, and belongs to the technical field of resource utilization of waste lithium ion batteries. Comprising the following steps: firstly, crushing and screening a positive plate obtained by discharging, disassembling and stripping the waste lithium iron phosphate battery to obtain lithium iron phosphate positive powder, and roasting the lithium iron phosphate positive powder; carrying out wet grinding to obtain slurry; and granulating and drying the slurry to obtain porous spherical precursor particles, carrying out fluidized high-temperature regeneration roasting, washing with water, and drying to obtain the high-performance new energy lithium iron phosphate battery positive electrode material. The new energy lithium iron phosphate battery positive electrode material prepared by the invention not only has high first discharge specific capacity and good cycle performance, but also has higher tap density and better processability due to the spherical morphology and proper particle size distribution, and can be directly used for preparation of new batteries.