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1312 results about "Mixed materials" patented technology
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Mixed Materials. This mix of materials is undeniably elegant. Mixed metals combined with natural materials like marble and cork up the sophistication level of any space.
Multi-process cooperative control method and system for sintering process
The invention relates to the technical field of sintered ore production, in particular to a multi-process cooperative control method and system of a sintering process. The sintering production level is comprehensively improved. The control method comprises the following steps: uniformly-mixed material replacement control logic: establishing a feed-forward compensation model taking a material ferrous component and a burn-out rate as variables, and adjusting the ratio of fuel to a flux; solid waste circulation matching control logic: establishing an admission and substitution mechanism of gravitational dedusting ash and environmental dedusting ash; hydrothermal cooperative control logic: establishing a coupling regulation mechanism of temperature and moisture of the mixture; the ignition-sintering end point cooperative control logic is used for adjusting ignition parameters and the main fuel dosage in a linkage mode; according to return mine balance control logic, the sintering process is reversely diagnosed and adjusted through the physical state and flow feedback of return mines; and fuel and flux replacement control logic: executing accurate replacement calculation taking carbon balance or alkalinity conservation as a basic principle, and introducing a particle size or activity degree correction coefficient for optimization. The method is realized by a multi-process cooperative control system.
Owner:CHANGSHU LONGTENG SPECIAL STEEL CO LTD
Dynamic carbon injection recycled coarse aggregate concrete as well as preparation method and application thereof
The invention belongs to the technical field of concrete, and particularly relates to dynamic carbon injection recycled coarse aggregate concrete as well as a preparation method and application thereof. The preparation method of the concrete comprises the following steps: (1) adding the cement, the mineral powder, the recycled coarse aggregate, the fine aggregate, the fly ash, the carbon sequestration agent, the retarder and the water reducing agent into water, and uniformly stirring to obtain a mixed material; (2) injecting carbon dioxide into the mixed material to obtain carbon-mixed concrete; and (3) curing the carbon-mixed concrete to obtain the carbon-mixed concrete. The invention provides a method for preparing dynamic carbon injection recycled coarse aggregate concrete by taking a carbon sequestration agent, a retarder, cement, mineral powder, recycled coarse aggregate, fine aggregate, fly ash and a water reducing agent as raw materials. The method is simple in process and easy for large-scale production. The concrete prepared by adopting the method is relatively high in carbon sequestration rate, excellent in mechanical property and capable of effectively avoiding rapid hydration.
Owner:HARBIN INST OF TECH
Test equipment for measuring high-temperature stability of asphalt mixture
PendingCN121899193AMaterial thermal coefficient of expansionClimate change adaptationTest sampleData acquisition
The invention belongs to the technical field of asphalt mixed material experiments, and particularly relates to test equipment for measuring the high-temperature stability performance of an asphalt mixed material, the test equipment comprises a test platform, an environment control module and a data acquisition module, the test platform comprises a test bracket, samples to be tested are uniformly arranged on an inclined adjusting plate on the test bracket, and the environment control module is connected with the data acquisition module; the data acquisition module comprises a laser displacement sensor, and the laser displacement sensor is arranged at the position, corresponding to the to-be-tested sample, of the adjusting plate; according to the invention, the laser displacement sensor located in the protection box is started at regular time, and the relative displacement change between the laser displacement sensor and the to-be-tested sample is calculated according to the change of the reflected laser, so that the actual deformation displacement of the to-be-tested sample is accurately measured and recorded and is transmitted to external computer equipment; and real-time and accurate data acquisition of the deformation degree of the to-be-tested sample is realized.
Owner:SHAANXI TRANSPORTATION VOCATIONAL & TECH COLLEGE
Design method, device and equipment for homogenate feeding of lithium ion battery and storage medium
PendingCN121835295ADesign optimisation/simulationConstraint-based CADElement modelElectrical battery
The invention relates to the technical field of lithium ion battery manufacturing, and discloses a homogenate feeding design method and device of a lithium ion battery and a computer storage medium, the method comprises the following steps: based on basic characteristic data of different types of raw materials of the lithium ion battery, constructing a non-uniformity characterization model of a mixture and obtaining a non-uniformity characterization result; and inputting the non-uniformity characterization result into a finite element model of the battery pole piece, and solving the finite element model in combination with an applied load and a boundary condition to obtain an internal cracking behavior simulation result of the mixture under different working conditions. And constructing an optimization model which takes the homogenate feeding scheme as a design variable, takes a design target as a target function and meets design constraint conditions, and solving to obtain a target homogenate feeding design scheme. The problems of neglecting of non-uniformity and cracking of the mixture in a traditional mode can be solved, the risks of stress concentration and capacity fading in the battery are reduced, homogenate feeding is more scientific and accurate, and the performance and reliability of the battery are improved.
Owner:CHONGQING JINKANG NEW ENERGY VEHICLE CO LTD
Plastic wood product production system device
InactiveCN224183663UEffective control of leakageImprove weighing accuracyDust controlProcess engineering
The utility model discloses a plastic wood product production system device which comprises a main material storage and conveying area, an auxiliary material feeding and weighing area and at least one mixed material conveying, extruding and feeding area. A CaCO3 main material storage and conveying unit, a CaCO3 transition unit, two groups of PVC main material storage and conveying units and a wood powder main material storage and conveying unit are arranged in the main material storage and conveying area; a group of auxiliary material pouring bin dedusting and weighing units are arranged in the auxiliary material feeding and weighing area; a mixing unit, a mixture conveying unit and a mixture storage and extrusion feeding unit are arranged in the mixture conveying, extruding and feeding area. The device has the advantages of being efficient in operation, high in weighing precision, good in mixing effect, remarkable in energy conservation, environmentally friendly, high in automation degree and the like.
Owner:SUZHOU LIANGUAN MASCH CO LTD
Renewable industrial flue gas carbon dioxide adsorbent and preparation method thereof
PendingCN121372308AOther chemical processesDispersed particle separationPolyethylene oxideMicrosphere
The invention relates to a renewable industrial flue gas carbon dioxide adsorbent and a preparation method thereof. The method comprises the following steps: S1, mixing alkali metal, an aluminum oxide precursor, silicon oxide and a first solvent, or mixing an alkali metal solution, the aluminum oxide precursor, the silicon oxide and an optional second solvent, and then molding the mixed material to obtain microsphere particles; s2, mixing the microsphere particles and organic amine, and carrying out first loading treatment and drying treatment to obtain an organic amine loaded material; s3, roasting the organic amine-loaded material, mixing the obtained roasted material with a carrier material, and carrying out second loading treatment, so as to obtain the carbon dioxide adsorbent, the carrier material is selected from at least one of polystyrene-polyacrylic acid-polyethylene oxide, polymethyl methacrylate-b-polystyrene, zirconium oxide and a porous ceramic material. The carbon dioxide adsorbent is relatively high in adsorption capacity and relatively good in selectivity, reproducibility and stability; and large-scale industrial production and application are facilitated.
Owner:GD POWER DEVELOPMENT CO LTD +1
Method for integrally preparing tungsten-copper alloy in complex shape through injection molding and sintering
The invention belongs to the technical field of metal-based composite materials, and particularly relates to a method for integrally preparing complex-shaped tungsten-copper alloy through injection molding and sintering, which comprises the following steps: mixing and preheating tungsten powder and copper powder; preparing a composite plasticizer matrix, mixing and granulating to obtain a granular mixed material; injecting the granular mixed material into a cavity of a steel mold through an extruding machine at the temperature of 150-200 DEG C; cooling and demolding to obtain a molded blank; the obtained formed blank is heated to 800-900 DEG C at the heating speed of 100-200 DEG C / h, and presintering is conducted for 1-2 h; and the pre-sintered formed blanks are arranged in a graphite boat at intervals, landfill and compaction are carried out through emery, then the formed blanks are heated to 1400-1450 DEG C, heat preservation is carried out for 2-2.5 h, and sintering and post-treatment are carried out. The method provided by the invention effectively solves the technical problems that an infiltration link is needed in a traditional production mode of the material, the material is not uniform, the mechanical and electrical properties are low, and a complex structure is difficult to directly form.
Owner:XINZHOU SHANGHUAYANG ELECTRICAL EQUIP CO LTD
High-aluminum limonite and specularite ore blending sintering method
The invention discloses a high-aluminum limonite and specularite ore blending and sintering method which comprises the following steps: 1) preparing primary pre-blending powder: pre-blending high-aluminum limonite, specularite concentrate powder, iron oxide scale, limestone powder and anthracite powder to prepare the primary pre-blending powder with the water content of 6.5-7%; (2) preparing a uniformly mixed material: blending the primary pre-blended material powder obtained in the step (1) with high-silicon iron ore powder and hematite and limonite powder to prepare the uniformly mixed material; 3) sintering and burdening: burdening the uniformly mixed material obtained in the step 2) with limestone, dolomite powder, quicklime, solid fuel and return mine, and 4) controlling the components of the sintered ore as follows: 2.3-2.5% of Al2O3, 5.7-6.5% of SiO2, 8-8.5% of FeO and 1.85-2.5% of MgO. According to the invention, while 20-30% of the proportion of the discount ore silk road powder in the total uniformly mixed material is increased, the sintering cost is reduced by 20-42 yuan / ton, the drum strength of the sintered ore is greater than or equal to 78.5%, the return mine rate is less than or equal to 27%, and the RDI + 3.15 mm is greater than or equal to 63%.
Owner:BAOSTEEL DESHENG STAINLESS STEEL
Nitrogen-doped porous carbon material and preparation method thereof
The invention discloses a nitrogen-doped porous carbon material and a preparation method thereof, and belongs to the technical field of porous carbon materials, and the preparation method comprises the following steps: adding an amino monomer and a carboxyl monomer into an organic solvent, carrying out a preliminary amidation reaction, further promoting the amidation reaction through heating, then adding an epoxy group cross-linking agent, and carrying out a reaction to obtain the nitrogen-doped porous carbon material. The preparation method comprises the following steps: carrying out amino-epoxy cross-linking reaction on an amino-epoxy resin, carrying out hydrolysis reaction on amide under an alkaline condition, mixing with a chemical activator to obtain a mixed material, putting the mixed material into a high-temperature furnace, carrying out high-temperature carbonization, and finally washing, pickling, filtering and drying the carbonized material to obtain the product. The nitrogen-doped porous carbon material with the nitrogen-doped characteristic, high pore volume, high specific surface area and high micropore rate is obtained by adopting a dual pore-forming strategy of internal nitrogen atom self-doping and chemical activation assisted chemical bond pore-forming, and the nitrogen-doped porous carbon material has the advantages of easily available raw materials, low cost, simple operation process, continuous production and the like, and has practical value and industrial prospect.
Owner:CHENGDU ORGANIC CHEM CO LTD CHINESE ACAD OF SCI
High-toughness ultra-fine grain WC-Co hard alloy and preparation method thereof
The invention belongs to the technical field of powder metallurgy materials, and particularly relates to a high-toughness ultra-fine grain WC-Co hard alloy and a preparation method thereof.The preparation method comprises the following steps that S1, ultra-fine grain tungsten carbide powder, nanocrystalline tungsten carbide powder, cobalt powder and a grain inhibitor are obtained to serve as raw materials, the ultra-fine grain tungsten carbide powder and the nanocrystalline tungsten carbide powder are subjected to ultrasonic dispersion, vacuum reduction and spray drying, and then composite tungsten carbide powder is obtained; s2, cobalt powder and a grain inhibitor are mixed and then subjected to first ball milling to obtain a first mixed material, the first mixed material and composite tungsten carbide powder are mixed and then subjected to second ball milling to obtain a second mixed material, and the second mixed material is subjected to third ball milling to obtain a third mixed material; and S3, drying, pressing, sintering and cooling the third mixture to obtain the hard alloy. By optimizing the ball milling process and the sintering process and adopting the novel dispersing agent and the grain inhibitor, the fracture toughness and the bending strength of the material can be remarkably improved while high hardness can be guaranteed.
Owner:GANZHOU ACHTECK TOOL TECH
Preparation method of high-density low-defect vanadium-aluminum alloy
The invention belongs to the field of vanadium-aluminum alloy smelting. The invention discloses a preparation method of a high-density low-defect vanadium-aluminum alloy. The method comprises the following steps: crushing raw materials; drying the raw materials; aluminum is prepared according to the amount of residual aluminum in the alloy accounting for 106%-108% of the theoretical amount of aluminum participating in the oxidation-reduction reaction, and the dried raw materials are evenly mixed; the mixed materials are put into a smelting furnace, and the composite flux is flatly laid on the materials; tiling titanium powder on the composite flux; igniting the titanium powder to carry out thermit reaction on the furnace charge in the furnace; gradient extreme cooling is conducted on the alloy, and sequential solidification from bottom to top is achieved at the temperature gradient of 50-100 DEG C / h; and after solidification, disassembling the furnace, carrying out water quenching, and cooling to obtain the vanadium-aluminum alloy. According to the method, the problems of surface oxidation, internal cracking, bottom loosening and the like of the vanadium-aluminum alloy can be synchronously solved, and the compactness and quality of the vanadium-aluminum alloy are remarkably improved.
Owner:PANGANG GROUP VANADIUM & TITANIUM RESOURCES CO LTD
Artificial soil body prepared based on waste slag stone of stone processing plant and preparation method of artificial soil body
PendingCN121040360AAgriculture tools and machinesGrowth substratesSimple Organic CompoundsMicroorganism
The invention belongs to the field of solid waste resource utilization, and discloses an artificial soil body prepared based on waste slag stone of a stone processing plant and a preparation method of the artificial soil body. The artificial soil body comprises a parent material layer, a leaching layer and a surface soil layer, and the preparation method of the artificial soil body comprises the following steps: (1) material treatment: mechanically crushing waste slag stones into multi-stage particle sizes, and mixing the crushed waste slag stones with mellow soil according to a specific mass ratio; (2) function synergistic enhancement: adding a water-retaining agent, an organic compound fertilizer and a compound microbial agent into different soil layer materials; and (3) structure construction: filling a mixed material according to layered design, and completing soil activation through spraying infiltration and microbial liquid spraying. According to the invention, through the synergistic effect of the particle size grading ratio of the slag stones, the mellow soil and the functional additive, the profile structure of natural soil is simulated, and the porosity, the water binding capacity and the microbial activity are optimized, so that the problems of low resource utilization efficiency of the waste slag stones, environmental problems caused by traditional landfill and scarcity of soil resources in engineering greening are solved.
Owner:CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD +1
Method for extracting iron from copper tailings
A method for extracting iron from copper tailings belongs to the field of copper tailings recovery treatment, and comprises the following steps: step 1, collecting copper tailings and crushing; step 2, adding a reducing agent and an auxiliary agent into the copper tailing powder crushed in the step 1, and fully mixing; (3) feeding the mixed material obtained in the step (2) into a sealed kiln for sealed reduction; fourthly, after reduction operation in the third step is completed, the mixed material is taken out and smashed again; fifthly, the mixed materials smashed in the fourth step are subjected to magnetic separation, and iron powder is obtained; and 6, residual substances obtained after magnetic separation in the step 5 are recycled. Compared with a traditional melting smelting mode, the low-temperature reduction mode is low in temperature, so that generated iron powder and slag can be kept in a solid state in the reduction process, the ring forming problem easily occurring in sealed kiln melting reduction and the defect that a rotary hearth furnace is difficult to discharge are overcome, energy consumption is reduced, and production efficiency is improved.
Owner:GANSU AISI HECHUANG TECHNOLOGY CO LTD
Low-gas-forming and high-heat-resistance precoated sand and preparation method thereof
The invention discloses low-gas-evolution and high-heat-resistance precoated sand and a preparation method thereof, and relates to the technical field of casting materials.The preparation method comprises the following steps that cast steel reclaimed sand is dried, so that the water content of the cast steel reclaimed sand is reduced to 0.1% or below; taking 1000 parts by weight of treated cast steel reclaimed sand, adding 5-10 parts by weight of a silane coupling agent, and uniformly mixing; the mixed materials are heated to 75-80 DEG C and then transferred into a sand mixer, 30-40 parts by weight of organic polysilazane resin is added, and sand mixing is conducted; adding 6-8 parts by weight of carbon nanotube powder, and mixing for 30 seconds; sequentially adding 5-7 parts by weight of vinyl silicone oil and 1.8-2.4 parts by weight of calcium stearate, and uniformly mixing to obtain a precoated sand product. According to the present invention, the novel bonding system is adopted to prepare the sand mold through the low temperature film coating process, and the prepared sand mold can generate ceramic transformation during the casting stage so as to provide characteristics of extremely low gas forming amount, extremely high heat resistance, low thermal expansion rate and excellent casting quality, and the production process has characteristics of energy saving and consumption reducing.
Owner:LIUZHOU LIUJING TECH CO LTD
A feeding protection system with a feeding mixing function and a feeding method thereof
The present application relates to a kind of feeding protection system with feeding mixing function and its feeding method, including mobile platform, mobile platform is provided with the mixing mechanism for feeding mixing, mobile platform is also provided with airflow mill mechanism, mixing mechanism is connected with the air flow mill mechanism between discharging conduit, the present application overcomes the deficiencies of prior art, provide a kind of feeding protection system with feeding mixing function and its feeding method, when directly through pipeline between feeding mixing equipment and pulverizing equipment material conveying, it is extremely easy to cause the blockage of material, and cannot accurately control the amount of mixed material conveying to pulverize, it can cause material backlog and blockage, seriously affect the efficiency of production, while part of material is shorter in airflow mill and is not collided and pulverized into smaller particles when directly being discharged to carry out next step production, affect the quality of product problem.
Owner:SUZHOU XIRAN IND EQUIP
High-temperature thermoplastic material flexibilizer processing equipment and processing method
The invention provides high-temperature thermoplastic material flexibilizer processing equipment and a processing method, and belongs to the technical field of plastic material processing equipment.The high-temperature thermoplastic material flexibilizer processing equipment structurally comprises a rack, the middle of the rack is sleeved with a mixed material collecting box, and the middle of the upper end of a cavity of the mixed material collecting box is sleeved with a component mixing mechanism; a batch discharging plate is attached to the lower end of the component mixing mechanism in a transverse clearance mode, and the bottom face of the batch discharging plate is provided with a material box heating partition plate piece in a communicating mode, and the material box heating partition plate piece is used for being horizontally arranged in the middle of a cavity of the mixing and collecting box in a sleeving mode. And the problem of non-uniform distribution of the flexibilizer in the raw material blank obtained by subsequently discharging the raw materials to the twin-screw extruder body for extrusion processing is avoided, and the processing quality is improved.
Owner:XIAMEN KEAISI PLASTICS TECH
A method for evaluating a supply of a port mixing yard, a supply method and a supply system
The application provides a method for evaluating the supply of a port mixed material yard, a supply method and a supply system. The method comprises the following steps: obtaining a unit mileage influence factor of transporting mixed ore to a steel enterprise by each port and a transportation mileage, combining a formula to calculate a mixed ore transportation segregation degree influence factor, and taking the mixed ore transportation segregation degree influence factor as a quality evaluation element of the mixed ore, so as to select a port mixed material yard from each port. In this way, each steel enterprise can obtain the mixed ore meeting the demand without establishing a special mixed material yard.
Owner:ZHONGYE-CHANGTIAN INT ENG CO LTD +1
Waste resource recycling device for urban landscape gardens
The invention discloses a waste resource recycling device for urban landscape gardens, and particularly relates to the technical field of waste resource utilization, the waste resource recycling device comprises a crushing structure arranged on the ground, a first knocking assembly is arranged at the front end of the crushing structure, a cleaning assembly is arranged at the front end of a magnetic separation assembly, and a spraying assembly is arranged above the cleaning assembly; a flow guide assembly is arranged outside the cleaning assembly, and a second knocking assembly is arranged on the left side of the rear end of the flow guide assembly. Through cooperation of the first knocking assembly and the second knocking assembly, the magnetic separation barrel is continuously vibrated and knocked, it is ensured that mixed materials in the magnetic separation barrel are dispersed, stubborn stains on the surface of plastic are rapidly removed through cooperation of the spraying assembly and the cleaning assembly, and meanwhile when a plastic block is cleaned through cooperation of a U-shaped roller and a rectangular plate located on the front side, the cleaning efficiency is improved. The plastic block is prevented from being clamped in the inner wall of the filter cartridge or a gap of the hard brush, and the effect of automatically scraping sewage and sediments in the water guide barrel is achieved through cooperation of the moving block and the arc-shaped scraping plate.
Owner:SICHUAN AGRI UNIV
Mechanical tough light-heat dual-curing bio-based coating and use method thereof
The invention discloses a mechanical tough light-heat dual-curing bio-based coating and a use method thereof. The coating comprises a cellulose macromonomer grafted with double bonds, a castor oil-based monomer containing steric hindrance urea bonds, a diluent, a photoinitiator and diisocyanate. The application method comprises the following steps: mixing the materials, coating the surface of a base material with the mixed materials, curing under ultraviolet light, and then carrying out thermocuring. The castor oil is subjected to chemical modification to introduce steric hindrance urea bonds and chain-end double bonds, and the castor oil, the cellulose macromonomer grafted with the double bonds, the diluent, the photoinitiator and the diisocyanate are subjected to photo-thermal dual curing to form a coating on the surface of a base material, so that the mechanical strength of the coating is remarkably improved.
Owner:NANJING FORESTRY UNIV
A nano-gold micro-substance production device
The utility model relates to nanometer gold neutrino material production technical field discloses a nanometer gold neutrino material production facility, including filter box and sliding assembly, the inside of filter box is provided with filter plate, the inside screw thread coupling of filter box has the threaded post, the outer wall fixed connection of threaded post has the rotating block, the one end rotation connection of threaded post away from rotating block has the sliding plate, the outer wall fixed connection of sliding plate has the limit post, the outer wall fixed connection of sliding plate has first clamping block, the outer wall of first clamping block abuts with second clamping block, the lower surface of filter box is provided with support component. In the utility model, the filter plate is filtered and purified to the material after preparation, the threaded post is driven to slide by rotating the rotating block, through the cooperation of the sliding plate, the limit post, the first clamping block and the second clamping block, the impurities in the mixed material are removed, the purity and quality of the nanometer gold neutrino material are ensured, and the effect that the filter plate is conveniently drawn out for cleaning and maintenance is achieved.
Owner:ZHENGZHOU LINGSI BIO-TECH CO LTD
Preparation method and application of sintering-free phosphorus-absorbing particles
The invention provides a preparation method and application of sintering-free phosphorus-absorbing particles, and the preparation method comprises the following steps: (1) a mixing step: uniformly mixing a mixed material containing phosphate tailings, fly ash, slag powder and quick lime with an alkali activator solution under the stirring action to obtain a mixed slurry; (2) curing: injecting the mixed slurry into a mold, and demolding after vibration degassing and sealed curing to obtain a cured sample; (3) curing: curing the cured sample under the conditions of constant temperature and constant humidity to obtain a geopolymer sample; and (4) granulating: segmenting, crushing and screening the geopolymer sample to obtain the sintering-free phosphorus-absorbing particles. According to the method, a preparation process combining geopolymer synthesis and physical crushing is adopted, high-temperature sintering is not needed in the whole process, and the energy consumption and the production cost are remarkably reduced. Moreover, the method is simple in process, low in cost and low in energy consumption, and has a good application prospect.
Owner:YUNNAN PHOSPHATE CHEM GROUP CORP +1
Energy-saving building material production equipment and aluminum electrolysis overhaul slag recycling method
PendingCN122253308AMixing operation control apparatusTransportation and packagingAluminium electrolysisBrick
The application provides an energy-saving building material production equipment and an aluminum electrolysis overhaul slag recycling method. The application relates to the field of energy-saving building material production equipment, and the energy-saving building material production equipment comprises a base. The energy-saving building material production equipment provided by the application inputs roasting gas into a drying outer cylinder, drives a drying inner cylinder to rotate and tumble filter residue A through a drying motor, and performs drying, so that energy is effectively saved. The filter residue A after drying is input into a crushing box through a lifting conveyor belt, is crushed by crushing cutters, is sieved, is input into a mixing box through a discharge hopper, is mixed with mixed material, cement and lime to obtain the mixed material, the mixed material is pressed into no-burning bricks by pressing the mixed material into the first mold through an upper pressing die head and a lower pressing die head, meanwhile, the second mold synchronously completes filling to realize continuous production, the filter residue A is converted into the no-burning bricks, waste resource utilization is realized, and environmental pollution is reduced. The double molds work alternately, production is ensured to be uninterrupted, and overall productivity and economic benefits are improved.
Owner:YICHUN JIULING LITHIUM IND CO LTD
Concrete mixing equipment for repairing airfield pavement
ActiveCN224044142UCement mixing apparatusLiquid ingredients supply apparatusArchitectural engineeringHeater Rod
Owner:首都机场集团有限公司北京大兴国际机场 +1
Production process of high-performance rare earth permanent magnet ferrite powder
ActiveCN121687719BInorganic material magnetismInductances/transformers/magnets manufactureStrontium carbonateMaterials preparation
The application belongs to the technical field of magnetic material preparation, and particularly relates to a production process of high-performance rare earth permanent ferrite magnetic powder. The process comprises the following steps: preparing iron red and auxiliary materials, wherein the auxiliary materials comprise calcium carbonate, strontium carbonate, lanthanum oxide and cobalt oxide; mixing raw materials in proportion, then performing dry ball milling to obtain mixed materials; performing steam treatment on the obtained mixed materials to make the water content of the mixed materials reach 2-5%, then performing ripening, and the ripening time is at least 30 min, and the ripening process is completed in the screw conveyor; balling; pre-sintering; performing coarse crushing on the pre-sintered materials and sieving to obtain rare earth permanent ferrite magnetic powder. Through steam pretreatment and ripening, the strength and thermal stability of the ball materials are significantly improved, the ball materials remain complete in the kiln, the flowability is good, and the consistency and qualified rate of the product are improved.
Owner:ANTE MAGNETIC MATERIAL CO LTD +1
A tantalum-based alloy and a method for producing the same
The application provides a tantalum-based alloy and a preparation method thereof. The preparation method of the tantalum-based alloy comprises the following steps: sequentially laying a first mixed material, a second mixed material and magnesium chips in a reaction crucible in a top-down direction, igniting the reaction crucible to generate an aluminothermic reduction reaction, and then sequentially performing a temperature reduction treatment and a surface finishing treatment to obtain the tantalum-based alloy. The first mixed material comprises aluminum particles, tantalum pentoxide, titanium oxide, potassium chlorate and aluminum fluoride. The second mixed material comprises aluminum particles, tantalum pentoxide, titanium oxide, potassium chlorate, aluminum fluoride and calcium fluoride. By adopting double dosing and covering the magnesium chips with the upper material, the application improves the ignition efficiency, significantly improves the material loss caused by the slow ignition speed and insufficient ignition of the material in the traditional off-oven method, and introduces a titanium source to form an AlTaTi compound, thereby significantly enhancing the alloy uniformity.
Owner:CHENGDE TIANDA VANADIUM IND
Sintered cloth thickness detection lag time complementing method
The invention relates to a time supplementing method for sintered cloth thickness detection lag. The method comprises the following steps: constructing a multivariable feed-forward prediction model to calculate an auxiliary door reference opening degree, collecting sintering machine speed, round roller speed and mixture moisture data, collecting feed-forward parameters in real time, and inputting the feed-forward parameters into the multivariable feed-forward prediction model; the reference opening degree of the auxiliary door is calculated; the radar level gauge detects the real-time material layer thickness; and correcting the reference opening deviation of the auxiliary door. Advanced compensation is carried out through the prediction model, systematic oscillation caused by the 1.5 m detection distance is eliminated by combining opening compensation according to the control value output after PID operation is carried out on the set material layer control thickness and the material level real-time detection thickness, a control system recovers to be stable, and material distribution is even and stable.
Owner:JIANGSU SHAGANG GROUP HUAIGANG SPECIAL STEEL CO LTD
Preparation method of medium-low temperature wear-resistant castable for lithium salt industry
The invention discloses a preparation method of a medium-low temperature wear-resistant castable for the lithium salt industry. The preparation method comprises the following steps: S1, dry mixing of raw materials; S2, preparation of a wear-resistant composite material; and S3, wet mixing and stirring. According to the method disclosed by the invention, the wear resistance of the castable is enhanced by compounding the light mullite and the phenolic resin, and the thermal shock resistance of the material is improved by floating a low-density light mullite sheet to form a wear-resistant surface layer; the tensile strength and toughness of the material are effectively enhanced and the crack resistance of the castable is improved through the surface activation treatment and hot pressing process of the carbon fibers; through the synergistic effect of SiC and ZrO2, SiC provides high hardness and wear resistance, ZrO2 enhances the toughness and thermal stability of the material, and the comprehensive performance of the castable under the medium and low temperature working conditions is remarkably improved by combining the accurate proportioning of the dry blend and the ultrasonic wet mixing and stirring technology.
Owner:CHANGSHA HENGAN ENG TECH CO LTD
Preparation method of high dielectric high curie temperature garnet ferrite without rare earth
The application relates to a preparation method of a high-dielectric high-Curie-temperature garnet ferrite without rare earth, which comprises the following steps: pre-treating raw materials to make the raw materials with different particle sizes basically reach the same particle size state, and then obtaining mixed materials with uniform components through mechanical stirring and one-time granulation, so that ideal pre-sintering effect can be realized. Meanwhile, three kinds of second grinding materials with different pre-sintering temperatures and particle sizes are uniformly mixed to control the sintering activity of the powder, and the sintering process is matched, so that the microstructure of the sintered body can be finally improved, the porosity of the ferrite material is reduced, and the ferromagnetic resonance line width is reduced. Through the combined substitution of bismuth, zirconium and calcium elements and the adjustment of the preparation process, the particle size of the powder is adjusted, the sintering stage is controlled to the end of continuous grain growth, the microstructure of the garnet ferrite material is improved, and finally the ferrite material with high dielectric constant, high saturation magnetization, low ferromagnetic resonance line width and high Curie temperature is prepared.
Owner:UNIV OF ELECTRONICS SCI & TECH OF CHINA +1
Plastic flexibilizer mixing solid-liquid filtering device
The invention relates to the technical field of solid-liquid filtering, in particular to a plastic flexibilizer mixed solid-liquid filtering device which comprises a supporting frame, a filtering piece arranged on the supporting frame, a power piece arranged on the outer wall of the filtering piece and an extrusion piece arranged on the lower portion of the filtering piece. The filtering piece comprises a material storage pipe arranged at the upper part of the supporting frame, and a sealing pipe is arranged at the lower part of the material storage pipe; the power part comprises a U-shaped pipe arranged on the outer wall of the material storage pipe, an ejector rod is arranged at the end of the U-shaped pipe, and an extension plate is arranged on the side wall of the ejector rod. The extrusion part comprises a closed circular plate arranged on the lower portion of the closed pipe, the ejector rod in the extending end of the U-shaped pipe is driven to move upwards through pressure generated when the filtering part is fed, the ejector rod moves upwards to drive the closed circular plate and the silo which are connected with the ejector rod to move upwards to extrude mixed materials inside, and the solid-liquid mixed materials are extruded forcibly to accelerate the filtering efficiency.
Owner:XIAMEN KEAISI PLASTICS TECH
Method and device for assisting the molding of pulverized mixed materials
To eliminate problems such as the risk that quality cannot be guaranteed due to an excessive amount of crushed materials, and the problem of insufficient reuse of crushed materials due to a deficient amount of the crushed materials, by easily obtaining a highly accurate and effective mixing ratio of crushed materials in an actual molded product.SOLUTION: There is provided a method for assisting in molding a crushed material mixture, comprising: measuring a virgin material plasticization time Tv up to a predetermined plasticization end position Xe using only a virgin material Rv, and a crushed material plasticization time Ts up to the predetermined plasticization end position Xe under a plasticization condition using only a crushed material Rs to perform a registration process as a basic time data Do; measuring a plasticization time Tm of the crushed material mixture up to the plasticization end position Xe in a predetermined shot when producing a molded product using a crushed material mixture Rm to obtain actual time data Dp; and calculating a crushed material ratio Px in the crushed material mixture Rm to perform outputting based on the virgin material plasticization time Tv, the crushed material plasticization time Ts, and the crushed material mixture plasticization time Tm.SELECTED DRAWING: Figure 1
Owner:NISSEI PLASTIC IND CO LTD