532 results about "Molten state" patented technology

The embodiment of the invention relates to the field of radioactive waste treatment, in particular to material treatment equipment and curing equipment. According to the material treatment equipment provided by the embodiment of the invention, the powdery material in the material accommodating device is converted into a partially molten state through the material treatment device, and the partially molten material is converted into the solid material through the pressurizing device, so that the powdery material can undergo conversion of different states in the material accommodating device; therefore, powdery materials are converted into solid materials convenient to transfer and process, the operation of replacing a container is omitted, and material processing procedures are saved. According to the curing equipment provided by the embodiment of the invention, the sealing device is used for sealing the material treatment equipment, so that the state transition process of the powdery material has better sealing performance and stability, and the stable quality of the produced solid material is ensured.

The invention discloses fluoride salt-free and nitrate-free low-temperature matte glaze for steel plate enamel as well as a preparation method and application of the low-temperature matte glaze, and belongs to the technical field of enamel. The matte glaze is prepared from quartz, borax pentahydrate, sodium carbonate, titanium dioxide, magnesium oxide, monopotassium phosphate, calcium carbonate, zinc oxide, magnesium carbonate, lithium carbonate, aluminum oxide and zirconium silicate according to a specific mass ratio. The preparation method comprises the following steps: mixing the raw materials, melting at 1300 + / -10 DEG C in a pure oxygen environment, and quenching after wiredrawing to detect a molten state. The matte glaze completely avoids the use of fluoride salt and nitrate, the problems of fluoride emission and environmental protection equipment blockage are eliminated from the source, the fluorine content of the product is not detected through detection, and the limit value requirements of European Union REACH regulations are met. Zinc oxide and ZnO / TiO2 are added, so that the liquid phase viscosity is reduced, ion diffusion is accelerated, and the opacity (opacification performance) and gloss of the porcelain glaze are enhanced.

The invention discloses continuous melt impregnation equipment based on dynamic pressure regulation, which comprises a rack, a fiber band cleaning mechanism and an impregnation mechanism are arranged in the rack, the fiber band cleaning mechanism comprises a driving assembly and two height adjusting assemblies, and the impregnation mechanism comprises a melt bath tank used for accommodating matrix resin in a molten state, the device comprises at least one heating device and at least one resin temperature sensor. The invention relates to the technical field of fiber compounding. According to the continuous melt impregnation equipment based on dynamic pressure adjustment, a precise servo linear actuator is combined with a force sensor and a displacement sensor, so that an impregnation pressure adjusting mechanism with high response and high precision is formed. The mechanism can adjust a roller gap with micron-level precision and respond to a control instruction with millisecond-level response speed, so that the real-time performance and accuracy of impregnation pressure adjustment are ensured, and the system can change according to different fiber bundle characteristics and resin viscosity.

A lunar regolith reduction reactor system includes a housing, a crucible, and a pair of electrodes. The housing includes a base structure and a cover structure detachably connected to the base structure, a gas input port to permit input of hydrogen gas into the housing, and a gas output port to permit outgassing of water vapor and gases. The crucible is designed to hold an amount of lunar regolith in the housing. The electrodes are disposed apart from one another and adjacent the crucible, wherein the electrodes are connectable to a power source to generate an electric arc to heat lunar regolith in the crucible and initiate a reduction reaction to separate oxygen gas and reduce separated material into a molten state.

The invention relates to the technical field of fabric production, and discloses a chemically-modified acetic acid-imitated weaving fabric forming device which comprises a bottom plate, a support, a stirring barrel and a heat preservation box. Materials of corresponding discharging hoppers are accurately input into the stirring barrel in proportion, heating wires heat the stirring barrel, stirring is matched with a stirring frame, and water evaporation is accelerated; a humidity sensor monitors the water content in real time, after the water content reaches the standard, a valve plate rotates to feed materials to a heating cylinder, a second spiral conveying plate stirs the materials to form a molten state, the materials are preliminarily filtered through a discharging hole filter screen, blockage is prevented through a scraper, secondary filtering is conducted through a screen exchanger, the melt pressure and the flow speed are stabilized, and the product quality is improved; uniform dispersion is realized through diversion of a diffusion tuyere of the net forming box, and directional arrangement is broken; the lower air suction box adsorbs the fibers to the conveying belt, the device automatically monitors the thickness and adjusts the flow speed, a fiber net is pre-reinforced through a needle plate, a water-based adhesive is sprayed through a spray head, the fiber net is dried and cured through a drying frame, then the fiber net is pressed through a pressing shaft, and stability is enhanced.

This invention discloses a laser thermal spraying gun, belonging to the field of laser additive manufacturing technology. It includes a connecting base, an air knife assembly, an inner nozzle, an outer nozzle, a cooling jacket cover, and a cooling jacket tube. The outer nozzle includes a powder feeding body and a Laval tube. The Laval tube has diffusion holes inside. The Laval nozzle accelerates the airflow through a tapered-expanding structure, forming a high-speed, high-temperature jet environment. This ensures the powder is fully preheated and uniformly dispersed before reaching the substrate. Combining the Laval tube with laser spraying combines the advantages of laser cladding and thermal spraying technologies. The accelerated effect of the Laval airflow, under high temperature and high pressure, allows the powder to fully contact the laser heat source over a sufficiently long flight distance through the Laval nozzle. This enables the powder to form a metallurgical bond with the substrate in a molten state, achieving a bonding strength 2-3 times that of traditional thermal spraying. This method is suitable for confined spaces used in the protection and repair of turbine blades from water erosion.

A component of a composite material is described. The component includes a connecting element and at least one stabilizing member. The connecting element is configured to position the at least one stabilizing member during production of the component, the connecting element having openings into which a melt composition in a molten state can flow, and the connecting element having at least one positioning device configured to position the at least one stabilizing member on the connecting element. The connecting element and the at least one stabilizing member are embedded in the melt composition, the melt composition reaching into the connecting element through the openings of the connecting element, and the at least one stabilizing member being positioned on the at least one positioning device of the connecting element.

The application belongs to the field of scintillator material preparation, and particularly relates to a manganese-based pixelated scintillator array and a preparation method and application thereof. The (BuTPP)2MnBr4 scintillator material in a molten state is filled into a quartz glass cavity by capillary action, and a glass scintillator matrix is formed by cooling and quenching; then, in-situ crystallization is realized in the glass scintillator by using femtosecond laser direct writing processing, and a pixelated array is precisely constructed. The in-situ crystallization induced by the femtosecond laser significantly improves the photoluminescence intensity and the radiation luminescence intensity of the material, effectively solves the problems of low luminescence efficiency, high pixelation processing difficulty and poor crystallization controllability of the traditional glass scintillator, and the prepared pixelated scintillator array has stable optical performance and clear pixel boundary, is suitable for X-ray imaging, radiation detection and the like, and has simple preparation process and strong controllability of parameters, thereby providing a new implementation method for the preparation of arrayed X-ray scintillators.

An apparatus for continuously growing an ingot includes a growth furnace in which a main crucible where silicon in a molten state is accommodated is located therein to form an ingot; a material supply part for supplying a silicon material in a solid state before the silicon in a molten state is melted; and a preliminary melting part including a preliminary crucible for melting the silicon material in a solid state which is supplied from the material supply part, a heating space in which the preliminary crucible can be heated, and a preliminary crucible heating module for heating the preliminary crucible by an induction heating method, where the silicon in a molten state in the preliminary crucible can be directly supplied to the main crucible.

This invention provides a side welding unit, comprising: a reference plate; a hot mold assembly including a first hot mold head, a second hot mold head, and a first translational drive, wherein the first hot mold head is disposed on the reference plate, the first translational drive is disposed on the reference plate and connected to the second hot mold head, and the first translational drive is used to drive the second hot mold head to move and heat the product to a molten state; and a fixing assembly including a clamping structure and a second translational drive, wherein the second translational drive is disposed on the reference plate and connected to the clamping structure, the second translational drive is used to drive the clamping structure to move the workpiece and heat the workpiece to a molten state, and the second translational drive is also used to drive the clamping structure to move the workpiece to weld with the product. With this configuration, the product and the workpiece are heated by independent hot mold heads, which can effectively shorten the welding stroke of the clamping structure and facilitate welding of large-sized products in environments with limited space.

The present application relates to a kind of polyethylene terephthalate foamed materials and its preparation method, the preparation method includes the following steps: polyethylene terephthalate material is heat pressed, and the preform of molten state is obtained;The preform of molten state is treated with melt isothermal crystallization and quenching, and sheet material is obtained;And the sheet material is treated with foaming, and polyethylene terephthalate foamed material is obtained.The present application uses melt isothermal crystallization treatment, can improve the melt strength in the foaming process of polyethylene terephthalate, strengthens its foaming performance, simultaneously can also be realized by strengthening bubble nucleation and controlling bubble growth to adjust the bubble morphology of foamed material, so can obtain the polyethylene terephthalate foamed material of bubble size uniform and controllable foaming ratio.

The application discloses a kind of liquid metal cooling pool type reactor multifunctional passive residual heat removal systems based on heat pipe, belongs to reactor system component design technical field, the system is by high-temperature heat pipe, main container wall pit, gas storage tank, storage tank valve, gas heater, gas output pipe, gas input pipe, air extractor, safety container, main container, reactor pit, cold air descending passage, cylindrical thermal insulation layer, hot air ascending passage, connecting pipeline, exhaust chimney, heat radiation plate and in-pile fixed facility composition.The application can be in the condition of reactor total plant power failure, main heat exchanger water interruption and earthquake and other accident conditions, start passive accident residual heat removal system, and the residual heat of reactor core is removed to final heat sink by high-temperature heat pipe.Reactor is in low-power operation or shutdown condition, and auxiliary heating is carried out to in-pile liquid metal, to ensure that coolant is in molten state and promote flow.The system structure is simple, and has independence, passivity, inherent safety.

The invention belongs to the technical field of medicines, and particularly relates to a preparation method of solubilizing type ibuprofen. The preparation method comprises the following steps: heating ibuprofen to a molten state, then pouring the ibuprofen into water, and carrying out intermittent ultrasonic treatment in a cooling process, so as to prepare the solubilizing ibuprofen. The preparation method disclosed by the invention is simple to operate, the required materials are easy to obtain, the cost is relatively low, and the prepared ibuprofen still keeps the original crystal form.

The application belongs to the technical field of inorganic porcelain composite materials, and particularly relates to an inorganic porcelain composite material for resisting salt and nitrate and preventing moisture and a preparation method thereof. The application comprises the following steps: preparation of activated base powder; and sintering of the activated base powder. The application is prepared by sintering a blank body made of calcium carbonate, talcum powder, silicon nitride, quartz sand and perhydrogen polysilazane. The perhydrogen polysilazane is first decomposed to solidify and shrink the blank body. When the temperature continues to rise, the quartz in the blank body and the silicon dioxide generated by the oxidation of the silicon nitride are both in a molten state and are fused with each other. The oxygen in the air penetrates into the blank body by diffusion and reacts with the silicon nitride. At this time, the nitrogen gas generated by the silicon nitride cannot diffuse outward under the molten blank body formed after solidification and shrinkage, and gradually gathers to cause the expansion of the base and a high closed porosity. The prepared inorganic porcelain composite material has excellent moisture resistance and high resistance to salt and nitrate.

The production process of the plastic strip comprises the following steps: S1, heating plastic to a hot melting state by adopting a plastic extruder, and continuously extruding through an extrusion opening to form a hot melting plastic strip; s2, the hot melting plastic strips enter a bearing area of a stacking mechanism from the extrusion opening in an extrusion spraying mode; s3, the stacking mechanism is driven to move to bear the hot-melt plastic strips, the bearing length L1 of the stacking mechanism on the hot-melt plastic strips in unit time is smaller than the extrusion length L2 of the plastic extruder on the hot-melt plastic strips in unit time, and therefore the hot-melt plastic strips are locally stacked in a bearing area near an extrusion opening, and wrinkles are generated; and S4, cooling and shaping the plastic strips which are locally stacked and have wrinkles to obtain the plastic strips which are non-uniform in thickness and have wrinkle textures on the surfaces.

The invention belongs to the field of hydrogen production by methane, and provides a reaction device and method for producing hydrogen by pyrolyzing methane by using an ultrasonic synergistic reinforced molten medium, and the reaction device comprises a reaction device cylinder, a thermal insulation layer, a flat cover, an ultrasonic vibration mechanism, a carbon material scraping mechanism and a water-cooling heat dissipation mechanism; a heat preservation layer is arranged on the outer side of the reaction device barrel, an ultrasonic vibration mechanism and a carbon material scraping mechanism are arranged in the reaction device barrel, a water-cooling heat dissipation mechanism is arranged on the outer side of the heat preservation layer, and a flat cover is arranged at the top of the reaction device barrel. The problems that under a traditional high-temperature molten state system, local turbulence fluctuation is caused by large-size vortex capture and trailing vortex entrainment, methane bubble coalescence is caused, the bubble size is too large, and bubble distribution in a drainage basin is uneven are solved, and the gas-liquid mass transfer efficiency and the methane conversion efficiency are effectively improved; and the problem that the manufacturing cost of the device is increased by increasing the height of the reactor for increasing the bubble retention time is solved.

The application discloses an insulating EPDM composite material and a preparation method thereof, and belongs to the technical field of rubber preparation. First, boron nitride is dispersed in a dispersing agent, a coupling agent is added, and modified boron nitride is obtained by drying; the modified boron nitride is dispersed in polyisobutylene in a molten state, and polyisobutylene@boron nitride composite powder is obtained after freezing, crushing and sieving; EPDM, the polyisobutylene@boron nitride composite powder, a conductive agent and an antioxidant are mixed; finally, a vulcanizing agent is added to the S3 mixed system, and the insulating EPDM composite material is obtained after vulcanization is completed. The insulating EPDM composite material provided by the application has excellent electrical insulation performance and electrical resistance, can effectively prevent electrical tree aging, and prolongs the service life of the product.

The invention provides a preparation method and application of double-waste composite modified asphalt for a road overlay. The preparation method comprises the following steps: S1, pretreating WPE and WEO raw materials; s2, mixing the pretreated WPE and WEO, and adding a nano material to obtain a composite modified master batch; s3, preparing a compatilizer and a stabilizer; s4, road petroleum asphalt is heated and kept in a molten state, the composite modified master batch prepared in S2 is added under the condition of continuous stirring, then shearing is conducted in the inert gas atmosphere, a compatilizer, a stabilizer, paraffin-oleate self-healing microcapsules and carbon nanotubes are added in the shearing process, and a composite modified asphalt-based material is formed; and S5, cooling the composite modified asphalt-based material obtained in S4, and filtering to obtain the composite modified asphalt. The prepared composite modified asphalt can be used for a road overlay, and the problems that a traditional overlay modified material is high in cost and single in performance are solved.

This invention belongs to the technical field of road engineering material performance testing, and specifically relates to an improved water-boiling test method for the adhesion of asphalt to aggregates. The method includes: S1: Randomly selecting a number of aggregates and preheating them to the mixing temperature ±5°C; S2: Preparing asphalt binder and heating it to a fluid state not exceeding the mixing temperature; S3: Immersing the aggregates in the preheated to a molten state of the asphalt binder for 45 seconds, ensuring the aggregates are completely coated, then suspending the aggregates in an environment of 145±5°C for a preset time, removing them and cooling them to room temperature; S4: Immersing the aggregates from S3 in boiling water for at least 3 minutes; S5: Transferring the boiled aggregate samples to clean water, observing the degree of asphalt film peeling off the surface, evaluating the asphalt film coating rate, and determining the adhesion grade based on the average coating rate. This method makes the laboratory test conditions closer to actual engineering conditions, improving the reliability and guiding value of the results.

The application discloses an alloy cushion block for a large walking beam heating furnace and a preparation method thereof, and the preparation method comprises the following steps: S1, determining the melting point of the alloy cushion block based on the atomic penetration depth of an alloy B containing FeO on multiple different alloy A with a melting point higher than that of the alloy B; S2, studying the load-bearing condition of the alloy cushion block to determine the required compressive strength; S3, designing the composition of the alloy cushion block; and S4, carrying out the industrial design of the alloy cushion block and starting smelting. Through reasonable alloy composition and production process design, the application provides a high-temperature heat-resistant alloy cushion block, improves the strength and melting point of the alloy cushion block, enables the alloy cushion block to maintain high strength at high temperature, solves the problem of FeO bonding in a molten state, reduces the phenomenon of heating furnace nodulation, and has universality and is suitable for various casting processes.

Manufacturing structure for a positive electrode plate provided with a positive electrode suspension by electrostatic adhesion, wherein the positive electrode plate comprises a positive electrode substrate and a layer of positive electrode suspension adhering thereto; the positive electrode suspension consists of a material that remains solid at room temperature; the positive electrode suspension is produced independently without needing to be mixed with the positive electrode substrate during the manufacturing process; the positive electrode substrate and the positive electrode suspension can be produced separately; the positive electrode suspension is solvent-free, solid, and has a long shelf life; and the manufacturing structure of the positive electrode plate provided with the positive electrode suspension by electrostatic adhesion comprises: a raw material tank for receiving the positive electrode suspension material; and The positive electrode mass material comprises the following: a multitude of positive electrode particles that can store or release lithium ions; the positive electrode particles constitute an active material; and A variety of PEOs (polyethylene oxides) serve to guide lithium ions and increase the conductivity of the positive electrode for lithium ions; the PEOs are thermoplastic, therefore they melt at high temperatures and are in a molten state; and a variety of PVDFs (polyvinylidene fluoride) or PVDF-HFPs (vinylidene fluoride-co-hexafluoropropylene); the PVDFs or PVDF-HFPs and the PEOs are polymer materials; when the positive electrode suspension is heated to a specific temperature, a copolymer of the PEOs and the PVDFs or PVDF-HFPs melts in the positive electrode suspension, causing the positive electrode suspension to become sticky; the sticky positive electrode suspension adheres to the positive electrode substrate, thus forming the positive electrode plate; and a variety of conductivity agents to increase the electrical conductivity of the positive electrode suspension; and a variety of lithium salts for the lubrication of the polymer chains of the polymer material and for increasing the ionic conductivity; and a variety of ceramic particles for guiding the lithium ions and forming lithium ion channels to prevent side reactions between the lithium ions and the positive electrode suspension due to abnormal deposition of lithium ions in the positive electrode suspension; and a variety of positive electrode particles, ceramic particles, conductivity agents and lithium salts, which are dispersed in the polymer material and support the positive electrode suspension; and The positive electrode material remains a solid at room temperature; when the positive electrode material is heated to a specific temperature between 50°C and 240°C, the PEOs in the positive electrode material melt, so that the positive electrode material adheres to the positive electrode substrate and forms the positive electrode plate; and An electrostatic spray gun is connected to the raw material container and serves to hold the positive electrode suspension. It applies a voltage to the suspension, generating electrostatic charges on its surface and forming charged fine particles. These charged fine particles are sprayed from the spray gun's outlet. At the outlet of the spray gun, a roller conveyor mechanism advances a carrier plate. This carrier plate collects the charged fine particles sprayed from the outlet and distributes them onto the substrate of the positive electrode to form a first electrode plate. The carrier plate consists of a metal sheet; and Since each particle of the positive electrode material is extremely small, the particles electrostatically adsorb to one another when the positive electrode material is sprayed onto the substrate using an electrostatic spray gun, thus forming a high layer density. This creates the positive electrode plate with high energy density, and the lithium-ion conductivity is further increased. Upon contact of the charged fine particles with the metal sheet, an electrostatic attraction arises between the charged fine particles and the metal sheet, causing the charged fine particles to adhere to the metal sheet and form the first electrode plate. a heating element connected to the roller belt mechanism, serving to heat the first electrode plate so that the charged fine particles are converted into a molten material and adhere to the positive electrode substrate to form the positive electrode plate; and Since the positive electrode plate with the positive electrode mass layer formed from the positive electrode mass material does not require baking and rolling steps, the materials inside the positive electrode mass material are not damaged by thermal or mechanical stresses.

The application discloses a manufacturing device of a heating structure, which is used for manufacturing the heating structure, and the heating structure comprises an outer tube and a bearing body, a sealed cavity is formed between the outer tube and the bearing body, the outer tube comprises a tube wall and a first cover plate and a second cover plate connected to opposite ends of the tube wall, the first cover plate and the second cover plate are connected to an outer wall of the bearing body; the manufacturing device of the heating structure comprises a forming die and a high-temperature injection equipment, the forming die is internally provided with a pouring cavity and a positioning part for fixing the bearing body, the pouring cavity is provided with an annular opening corresponding to the positioning part, the forming die is provided with an injection port communicating with the pouring cavity, the pouring cavity is used for pouring to form the tube wall and the first cover plate, and the first cover plate is connected to the bearing body at the annular opening; the high-temperature injection equipment comprises a heating module for heating hot-melt material to a molten state and an injection head for being docked with the injection port. The manufacturing device of the heating structure has good product consistency. The application further relates to a manufacturing method of the heating structure, the heating structure and a non-combustion smoking set.

The utility model discloses a raw material melting device for plastic film production, and belongs to the technical field of plastic film production. A stirrer; the heating inner container barrel is used for heating the plastic film raw materials to reach a molten state; the second-stage crushing storage cavity is arranged below the heating inner container barrel and is used for containing molten raw materials subjected to second-stage crushing; the second-stage crushing and rotating assembly is arranged at the upper part of the inner cavity of the second-stage crushing and storing cavity and is used for receiving the primarily crushed molten raw materials falling from the heating inner container barrel; and the second-stage crushing rotating assembly comprises two rotating discs which are symmetrically arranged, a plurality of fixing rods which are fixed between the inner walls of the two rotating discs in an annular array mode, a plurality of crushing blades which are symmetrically welded to the peripheral side of each fixing rod, and a rotating shaft which can drive the two rotating discs to carry the crushing blades to move. Due to the two-stage crushing design, the uniformity and the fineness of raw materials are remarkably improved, the caking phenomenon is reduced, and the melting efficiency and the melting quality are improved.

The application discloses a preparation method of a pore size adjustable porous carbon material, and comprises the following steps: (1) adding a condensed ring aromatic compound containing both nitro and amino groups into an aromatic compound containing both nitro and amino groups, uniformly mixing, and then mixing and heating with a strong dehydrating agent at high temperature to a molten state; or adding an inorganic salt compound into an aromatic compound containing both nitro and amino groups, uniformly mixing, and then mixing and heating with a strong dehydrating agent at high temperature to a molten state; (2) performing secondary heating on the mixed material in the molten state at 220-1000 DEG C, and obtaining a porous carbon material with a continuous structure after sufficient reaction. The method can adjust the pore size of the synthesized porous carbon material by adjusting the type and proportion of the added monomers, can increase the pore size of the obtained porous carbon material by about 1.5 times on the basis of the initial pore size or reduce the pore size by more than 3 times, and can meet the pore size requirements in different application scenarios. The porous carbon material prepared by the method can be used as a catalytic material, an electrochemical energy storage material or a heat insulation material.

The present application relates to a kind of polyethylene terephthalate-2,5-furandicarboxylic acid glycol copolyester foamed material and its preparation method, the preparation method includes the following steps: polyethylene terephthalate-2,5-furandicarboxylic acid glycol copolyester material is heat pressed, and the preform of molten state is obtained;The preform of molten state is treated with melt isothermal crystallization and quenching, and sheet material is obtained;Sheet material is treated with foaming, and polyethylene terephthalate-2,5-furandicarboxylic acid glycol copolyester foamed material is obtained.The present application uses melt isothermal crystallization treatment, can improve the melt strength in the foaming process of polyethylene terephthalate-2,5-furandicarboxylic acid glycol copolyester, strengthens its foaming performance, simultaneously can also be realized by strengthening bubble nucleation and controlling bubble growth to adjust the bubble morphology of foamed material, so polyethylene terephthalate-2,5-furandicarboxylic acid glycol copolyester foamed material with uniform bubble size and controllable foaming ratio can be obtained.

The invention relates to the field of structural wave absorption, in particular to an electromagnetic wave-absorbing material and a preparation method thereof. The electromagnetic wave-absorbing material comprises: a) a honeycomb substrate having a plurality of honeycomb holes penetrating along the thickness direction; the honeycomb holes are filled with the wave-absorbing medium; wherein the wave-absorbing medium is a condensate formed by cooling after paraffin and an absorbent are uniformly dispersed in a molten state; the absorbent has magnetic loss and / or dielectric loss properties. Impedance is adjusted through paraffin, loss is provided through the absorbent, a propagation path is prolonged through the honeycomb structure, and the electromagnetic wave-absorbing material which is reduced in interface reflection, improved in absorption efficiency, good in structural stability and adjustable in absorption performance is achieved.

The application belongs to the field of ceramic ink, and discloses a concave engraving ceramic ink with obvious line effect and no background color and application thereof. The first part of the ink contains bismuth vanadate, and the second part contains hydrated magnesium silicate and / or fumed silica. The inventor finds that the finer the particle size of the bismuth vanadate, the lighter the background color after firing, and the specific surface area of the hydrated magnesium silicate and / or fumed silica is relatively large, which can be well combined with the bismuth vanadate to form a glass phase to dissolve the background color formed by vanadium elements in a high-temperature molten state. After the hydrated magnesium silicate and / or fumed silica is ground, the ceramic ink with a more hydrophobic enamel stripping effect can be formed. The first part makes the glaze surface form a concave effect, and the second part has a hydrophobic and enamel-repellent effect, and the two mechanisms jointly act to achieve the effect of obvious line effect and no background color. The concave engraving ceramic ink has excellent printing performance, and the concave line effect of the ceramic tile is obvious and has no background color.

The invention discloses a method for preparing a ceramic frit from electronic waste. The ceramic frit is prepared from the following raw materials in parts by mass: 40-55 parts of waste electronic glass, 15-27 parts of polishing powder, 8-10 parts of waste aluminum oxide, 6-8 parts of waste desulfurized gypsum, 3-6 parts of a boron-containing modifier, 5-8 parts of waste fuel and 1-3 parts of a mineralizing agent. The method comprises the following steps: stirring and mixing waste electronic glass, polishing powder, waste aluminum oxide, waste desulfurized gypsum, a boron-containing modifier and a mineralizer, adding waste fuel, further stirring and mixing, and then feeding into a granulator for granulation; feeding the prepared particles into a smelting furnace for calcining, wherein the calcining temperature is 1050-1150 DEG C; and carrying out water quenching molding on the molten material to obtain the ceramic frit. The method for preparing the ceramic frit from the electronic waste solves the technical problems of high energy consumption of ceramic frit calcination and resource waste caused by direct treatment of the electronic waste in the prior art.

The application discloses a gunning material for a melting type RH refining furnace, a preparation method and a use method. The gunning material is prepared from the following raw materials in percentage by mass: magnesia 55-80%, pre-synthesized spinel 10-30%, nano-polycrystal magnesium oxide 5-10%, aluminum-magnesium composite heating agent 3-8%, and sintering aid 0.5-5%. Through the synergistic heat release effect of the aluminum-magnesium composite heating agent and the optimized oxygen-fuel ratio flame, the gunning material is in a molten or semi-molten state when reaching the surface of the base body, and forms a firm metallurgical bond with the base body, instead of simple physical adhesion or low-temperature sintering. This greatly prolongs the service life of the repair layer to more than 20 furnace times, which is more than 4 times longer than the 1-5 furnace times of the traditional gunning material.

The invention discloses oxide dispersion strengthened metal powder for 3D printing and a preparation method of the oxide dispersion strengthened metal powder. The preparation method comprises the following steps that S1, the smelting process is conducted, specifically, a metal ingot is put into a vacuum smelting furnace or a feeding system integrated with powder manufacturing equipment, vacuumizing and high-temperature melting are conducted to be in a molten state, and a melt is obtained; s2, the atomization process is conducted, specifically, the melt is put into powder manufacturing equipment, small metal liquid drops are generated in a reaction chamber through the melt, fine spherical metal powder is formed, and the fine spherical metal powder with the needed particle size is collected through screening under the protective atmosphere; wherein oxygen is doped in the smelting process and / or the atomization process. The oxide particles can be dispersed inside and outside the metal powder, the problem that oxide can only be added on the surface through thermal oxidation and mechanical grinding is solved, meanwhile, the laser absorptivity is improved, and the 3D printing performance of the metal powder is improved.