36 results about "Tin Element" patented technology

The invention discloses a combined determination method for the tin content of iron ore, which is characterized by comprising the following steps: drawing a calibration curve; selecting measurement parameters of an instrument; weighing a sample; sample melting: uniformly mixing the weighed sample with a mixed flux in a certain proportion, and melting in a muffle furnace; extracting a sample: extracting the fused sample by using hydrochloric acid, and fixing the volume for detection; and sample determination: determining by using an inductively coupled plasma emission spectrometer, determining the intensity value of each element by drawing a standard curve method, and calculating the final content of the element according to a calibration curve made by a standard solution. The invention aims to provide the combined determination method for the tin content of the iron ore, through experiments, the accuracy of determining the standard substance and the tin element of the tin-containing iron ore can be guaranteed, and through standard recovery experiments, the recovery rate is 95% or above. The method is used for production practice, and is an effective and practical method.

This invention provides a method for preparing a titanium-tin master alloy with tin segregation suppression and a cooling device. The preparation method includes: (1) pressing a molten blank; (2) smelting and refining to obtain an alloy melt; (3) casting and cooling: after turning on the cooling device, the alloy melt is poured into the cooling device, cooled, and then demolded to obtain a titanium-tin master alloy; the outer surface and the interior of the cooling device are equipped with water-cooling units. This invention utilizes the raw material structure of "titanium-tin core" to effectively reduce the occurrence of tin seepage in the crucible, reduce tin raw material loss, and improve the accuracy of alloy composition; combined with the cooling device to achieve internal and external synergistic cooling, it can effectively suppress tin atom diffusion, prevent the occurrence of tin element anti-segregation in the traditional smelting process, enhance the uniform distribution of tin element in the titanium-tin alloy ingot, and control the tin element content deviation in the titanium-tin alloy ingot within 2wt%.

The invention belongs to the technical field of soil and sediment detection, and particularly relates to a method for measuring the content of a tin element in soil and sediment, which comprises the following steps: S1, sample treatment; the method comprises the following steps: weighing a soil or sediment sample, adding an acid solution and ultrapure water, carrying out gradient heating digestion, and fixing the volume with acid after digestion to obtain a test solution; the method is different from a conventional four-acid digestion method, and digesting is carried out by using a diacid digestion method of nitric acid and hydrofluoric acid and a full-automatic graphite digestion method; s2, tin content determination: taking the test sample solution, injecting the test sample solution into an inductively coupled plasma mass spectrometer to obtain test data, and calculating the content of the tin element in the test sample solution according to the test data. The tin element is measured by combining the inductively coupled plasma mass spectrometer, the detection mode is matched with an optimized gradient heating and diacid full-automatic digestion method, the accuracy and reliability of a detection result can be guaranteed, and the method is suitable for accurate analysis of the tin element in soil and sediments.

The invention discloses a soldering tin testing machine special for a motor rotor, and relates to the field of soldering tin testing, the soldering tin testing machine comprises a conveying table, a testing mechanism, an image acquisition part and a detection module, the detection module is installed on the surface of the conveying table, the testing mechanism is arranged on one side of the conveying table, the image acquisition part is arranged on one side of the testing mechanism, and the image acquisition part is arranged on the other side of the testing mechanism. Wherein the conveying table is used for bearing the conveying work of a to-be-tested motor rotor subjected to soldering tin and bearing all functional parts and functional modules; the testing mechanism is used for dual continuous treatment of smoke collection and stability testing after tin soldering when tin soldering is carried out on the tin-soldered electronic rotor; the tin soldering smoke absorption and the strength test of the tin soldering element can be conveniently combined, the dual functions of the device can be automatically switched, the pollution in the test process is reduced, the abnormal condition in the tin soldering process is effectively recorded and tracked through the abnormal analysis and traceability of the detection module, and the source of a fault is quickly positioned through traceability analysis.

The present application provides a modified electrolyte and a preparation method therefor, an electrode material, and a battery. The modified electrolyte comprises a basic electrolyte and metal particles attached to the surface of the basic electrolyte; the material of the metal particles comprises one or more of a nickel element, a copper element, a tin element, an iron element, a cobalt element and a precious metal element. According to the modified electrolyte provided by the present application, a specific solid electrolyte is used as the basic electrolyte, the surface of the basic electrolyte is modified with the metal particles, the electronic conductivity of the modified electrolyte is effectively improved by means of cooperation of the basic electrolyte and the metal particles, and the positive electrode material containing the modified electrolyte can simultaneously improve the effective transmission of ions and electrons, such that the battery having the positive electrode material has both low interface impedance and good electrochemical performance.

The invention discloses a gold purification method for gold-tin eutectic alloy waste. The method comprises the following steps: S1, dissolving; s2, first-time tin removal, wherein free tin elements are removed; s3, second-time tin removal is conducted, specifically, complex-state tin elements and impurity elements are removed; s4, tin is removed for the third time, and a trace amount of residual tin element is removed; and S5, gold reduction and purification. According to the method, tin elements in different forms (free state-complex state-trace residue) are removed in stages, copper powder replacement, hydrochloric acid boiling and washing and hydrolysis tin removal methods are combined, deep removal of tin in the gold dissolving solution is achieved, the purpose of efficiently separating and purifying high-purity gold from the gold-tin eutectic alloy waste is achieved, operation is easy, and complex equipment is not needed.

A solid electrolyte according to one aspect of the present invention contains the element lithium, the element phosphorus, an element M, the element sulfur, and an element X, wherein the element M is at least one selection from the group consisting of the element silicon, the element germanium, and the element tin, and the element X is at least one selection from the group consisting of the element bromine and the element iodine. In an X-ray diffraction diagram of the solid electrolyte obtained using CuKα radiation, a diffraction peak A is present in the range of diffraction angle 2θ = 20.1° ± 0.3°, a diffraction peak B is present in the range of diffraction angle 2θ = 29.4° ± 0.3°, and a diffraction peak C is present in the range of diffraction angle 2θ = 33.3° ± 0.3°. The ratio IC / IB in the X-ray diffraction diagram of the intensity IC of the diffraction peak C to the intensity IB of the diffraction peak B is at least 0.15. The X-ray diffraction diagram either does not have a diffraction peak in the range of diffraction angle 2θ = 24.9° ± 0.3° or has a diffraction peak D in the range of diffraction angle 2θ = 24.9° ± 0.3° with the ratio ID / IB of the intensity ID of the diffraction peak D to the intensity IB of the diffraction peak B being not more than 0.05.

Provided are a composite electrode, and a light-emitting diode having the composite electrode and a preparation method therefor, relating to the technical field of semiconductors. The light-emitting diode comprises an epitaxial layer and the composite electrode. The composite electrode comprises an adhesion barrier layer and a solder layer sequentially stacked on the epitaxial layer; the solder layer comprises at least two solder sub-layers sequentially stacked; each solder sub-layer is a gold-tin alloy layer; in each solder sub-layer, the mass ratio of gold element to tin element increases progressively in the direction away from the adhesion barrier layer; and in two adjacent solder sub-layers, the maximum mass ratio of gold element to tin element in the solder sub-layer closer to the adhesion barrier layer is greater than the minimum mass ratio of gold element to tin element in the solder sub-layer farther from the adhesion barrier layer. The present disclosure can effectively improve the soldering and packaging reliability of the light-emitting diode.

The invention provides a composite brazing sheet, a preparation method thereof and a brazing body. The composite brazing sheet comprises a core material and a brazing filler metal layer arranged on the surface of at least one side of the core material, and a middle layer is arranged between the core material and the brazing filler metal layer. The middle layer comprises a low-melting-point phase; the melting point of the low-melting-point phase is not higher than 600 DEG C; the low-melting-point phase includes a magnesium element and at least one element selected from a bismuth element and a tin element. The composite brazing sheet provided by the invention is provided with the middle layer, and the middle layer forms a specific low-melting-point phase, so that oxide film breaking and wetting uniformity are improved, and formation of an effective welding seam is more facilitated, so that use of a brazing flux in a CAB brazing process is avoided, the problem of brazing flux residue is thoroughly avoided, and meanwhile, a good brazing effect is ensured.

The invention provides a core-shell type catalyst as well as a preparation method and application thereof. The core-shell type catalyst comprises an inner core, and an inner coating layer and an outer coating layer which are sequentially coated on the surface of the inner core, the inner core comprises a nickel-cobalt oxide, the inner coating layer comprises a tin-doped iridium ruthenium oxide, and the outer coating layer comprises a titanium-based oxide. According to the catalyst, the nickel-cobalt oxide serves as an inner core, structural support is provided, electron transfer is assisted through Ni < 2 + > / Ni < 3 + > redox pairs, and the catalytic activity is improved; due to the introduction of the tin element in the inner coating layer, the d-band center of Ir / Ru is regulated and controlled, the intrinsic activity of OER is improved, and meanwhile dissolution and loss of precious metal are inhibited; and the outer coating layer is tightly combined with the inner coating layer by forming Ti-O-Ir bonding, so that the interface stability is further enhanced, effective physical protection and chemical anchoring are provided for the noble metal, and the loss path of the noble metal is doubly blocked. The catalyst synchronously realizes the improvement of catalytic activity and the enhancement of long-term durability.

The application provides a tin mineralization identification and sampling method fusing XRF and spectral data, and relates to the technical field of geological exploration and mineral exploration. The method comprises the following steps: tin element content distribution is obtained by adopting portable XRF to perform grid rapid scanning; the characteristic peak of altered mineral is identified by using a portable spectrometer at an abnormal point; XRF data and spectral data are fused; the boundary of a tin mineralization body is rapidly circled on site; and the geological logging and sampling are guided accordingly. The application implements forced sampling on the point which is not mineralized by naked eyes but is determined as mineralized by instruments, and fundamentally solves the technical problem of "logging without seeing and supplementing sampling with ore". The application can significantly reduce the ore leakage rate, improve the accuracy and efficiency of logging and sampling, shorten the exploration period, and can be popularized to the on-site exploration of other difficult-to-identify metal minerals.

The invention discloses a method for refining and detinning tin-containing crude copper, which comprises the following steps: S1, preparing tin-containing crude copper into powder, adding excessive cuprous sulfide powder, and uniformly mixing to obtain a prefabricated mixture; s2, the prefabricated mixture is put into a vacuum distillation furnace for vacuum distillation, the vacuum distillation vacuum degree is set to be 1-100 Pa, the initial temperature is 627-927 DEG C, the heat preservation time is 3-5 h during the period, the temperature is gradually increased to 1000-1083 DEG C, and heat preservation is conducted for 1-2 h; s3, after heat preservation is completed, heating is conducted till the mixture in the vacuum distillation furnace is completely melted, and heat preservation and standing are conducted. The method adopts a three-section temperature control mode to realize deep removal of tin element in tin-containing crude copper and effective recovery of copper.

The invention discloses a process for recovering refined tin from a tin-containing material, which comprises the following steps: acid leaching: leaching the tin-containing material by using a first acid solution to obtain a leachate; a reducing agent is added into the leaching solution, ferric iron in the leaching solution is reduced into ferrous iron, then an extracting agent is added for extraction, and the tin element is extracted to enter an organic phase; a second acid solution is added into the organic phase for reverse extraction, and tin-rich reverse extraction liquid is obtained; and electrolytic refining is conducted, specifically, the tin-rich strip liquor is electrolyzed, and refined tin is obtained. According to the method, the tin-containing material can be fully utilized, the leaching rate of tin is high, the purity of tin in the finally produced tin product is larger than or equal to 99.9%, high-efficiency conversion from the tin-containing material to the high-purity tin product is achieved, and good economic value and application prospects are achieved.

The invention belongs to the technical field of semiconductor material preparation, and particularly relates to a preparation method of a tin-doped gallium oxide single crystal material. The method comprises a sintering process, a charging process, a crystal growth process and a cooling process, the problems of volatilization and wrapping of tin oxide, agglomeration of powder and the like are solved to the greatest extent through a segmented sintering process and control of optimized doping components, uniform solid solution of tin elements in gallium oxide crystal lattices is ensured, the stability of the doping process is ensured, and the doping efficiency is improved. And the quality and performance of the sintered body are improved. On the basis, by regulating and controlling process conditions of a heating stage and a crystal growth stage, concentration fluctuation at an interface is further inhibited, and melt convection homogenization is promoted, so that the solid solubility and distribution consistency of the tin element in beta-Ga2O3 crystal lattices are improved, and the overall performance of the beta-Ga2O3 single crystal material is further improved; a high-quality and repeatable material basis is provided for subsequent device preparation, and the urgent demand of a power device and a deep ultraviolet photoelectric device on the high-performance beta-Ga2O3 single crystal substrate is effectively met.

The invention belongs to the technical field of transparent conductive films, and provides a preparation method and application of a rare earth doped nano tin oxide plating layer, the preparation method comprises the following steps: stannate, rare earth salt and urea are added into a solvent, the molar ratio of tin element to rare earth element to urea is 1: (0.005-0.3): (0.1-3), the solvent is stirred, and the rare earth doped nano tin oxide plating layer is obtained; the rare earth salt is at least one of lanthanum salt and samarium salt; carrying out solvothermal reaction, centrifugal precipitation, drying and dispersion to obtain a glue solution containing rare earth doped nano tin oxide; and depositing the glue solution on a to-be-deposited object to obtain the rare earth doped nano tin oxide coating. By doping the rare earth elements lanthanum and samarium, the carrier concentration of the tin oxide is effectively improved, the oxygen vacancy defect on the surface of the tin oxide is reduced, and the conductivity of the tin oxide is improved. The prepared plating layer has good optical transmittance and conductivity, the plating layer electrode has good electrode stability and weather resistance, the process is simple, and the method is suitable for industrial production.

The utility model relates to a tin stripping waste liquid recovery processing device which comprises a sedimentation tank, the sedimentation tank is connected with a new tin stripping liquid regeneration kettle through an oxidation tank, a centrifugal machine, a buffer tank, a multi-effect evaporator and a condenser in sequence, the centrifugal machine is further connected with a filter through a pyrolysis tank and washing equipment in sequence, and the filter is respectively connected with a dryer and a first post-processing tank. And the first post-treatment tank is also respectively connected with a second post-treatment tank and the multi-effect evaporator, and the second post-treatment tank is connected with an inlet of the new tin stripping liquid regeneration kettle. According to the recovery treatment device for the tin stripping waste liquid, the tin stripping waste liquid is recycled, dissolved tin elements, iron elements and copper elements are all recovered, maximum utilization of resources is achieved, no other waste is generated in the recovery process, and secondary pollution is eliminated.

The oxide sintered body of the present application contains a tin element, a tantalum element, and a niobium element. The area ratio of the hole portion per unit area in the cross-sectional observation of the oxide sintered body is 1% or less. The maximum equivalent circle diameter of the hole portion in the cross-sectional observation of the oxide sintered body is 20 μm or less. The maximum Feret diameter of the hole portion in the cross-sectional observation of the oxide sintered body is 50 μm or less. The relative density of the oxide sintered body determined based on the Archimedes method is 99.6% or more is appropriate. The bending strength of the oxide sintered body determined according to JIS R1601 is 180 MPa or more is appropriate.

The invention relates to the technical field of electrical contact materials, in particular to a SnO2 electrical contact material for a new energy electrical appliance and a preparation method of the SnO2 electrical contact material. The SnO2 electrical contact material comprises 8-15% of tin oxide, 0.5-3% of a composite additive, 0.1-2% of an accelerant and the balance of silver. According to the invention, yttrium ions and chromium ions can be partially dissolved in tin oxide crystal lattices, so that the thermal decomposition reaction of tin oxide at extremely high arc temperature is effectively inhibited, the material loss caused by tin element volatilization is reduced, the second additive generates a high-melting-point composite oxide phase after high-temperature calcination, and the high-melting-point composite oxide phase is uniformly distributed in a silver matrix; as a physical skeleton for resisting arc erosion, the accelerant mainly plays a role in dispersing and interface optimizing, and an interface compound containing zinc, lanthanum, boron and oxygen is formed after the accelerant is calcined, so that the wettability and binding force between tin oxide particles and a silver matrix are improved, uniform distribution of the tin oxide particles is ensured, local overheating and concentrated erosion are avoided, and the service life of the tin oxide particles is prolonged. Therefore, the mass loss of arc ablation is obviously reduced.

Embodiments of the present disclosure provide an oxide thin film transistor and a display device. Relate to the technical field of thin film transistor, for improving the on-state current and stability of oxide thin film transistor. The oxide thin film transistor comprises a gate, an active layer, a source and a drain. Wherein, the active layer comprises a first active layer and a second active layer which are arranged in a stack, and the first active layer is closer to the gate than the second active layer. The first active layer and the second active layer contain the same metal elements, and both contain at least two of indium element, zinc element, gallium element, tin element, aluminum element, titanium element, tantalum element, tungsten element and molybdenum element; the first active layer and the second active layer also contain oxygen element, and the crystalline state of the first active layer and the second active layer is different, and / or the content of oxygen vacancy of the first active layer and the second active layer is different.

To provide an infrared shielding structure excellent in high heat ray shielding performance by achieving both heat shielding and heat insulation properties and having bluish designability, and a laminate excellent in heat ray shielding performance and having high adhesion with a layer in post-processing.SOLUTION: The infrared shielding structure includes a base material layer, a resin layer 1 and a resin layer 2 in this order. The resin layer 1 contains infrared absorption particles 1. The resin layer 2 contains infrared absorption particles 2. One of the infrared absorption particle 1 and the infrared absorption particle 2 contains tin element while the other contains tungsten element. The laminate includes the resin layer 1 on at least one surface of the base material layer, and the resin layer 1 contains the infrared absorption particles 1. In the resin layer 1, when detection sensitivity of the infrared absorption particles 1 at positions of 20% of depth from the base material layer toward the opposite is denoted by X20, and detection sensitivity of the infrared absorption particles 1 at positions of 90% of depth is denoted by X90, X20≥2×X90 is satisfied.SELECTED DRAWING: Figure 1

The invention relates to a method for enriching gold, silver and tin in regenerated brass through pulse current and a product, and the method comprises the following steps: inserting a graphite electrode of which the middle part is covered with an aluminum oxide high-temperature-resistant insulating coating into a regenerated brass melt, and after the melt is cooled to a certain temperature, sequentially applying three groups of pulse current for enriching tin, silver and gold to the melt for a period of time; and after the pulse current is applied and the melt is cooled, high-valence elements of gold, silver and tin are migrated to the top of the melt so as to realize enrichment. In order to solve the problem that the conductivity of gold, silver and tin elements in regenerated brass is different from that of brass matrix elements, corresponding pulse parameters are set according to the content of the gold, silver and tin elements, pulse current is introduced in sequence to create a non-uniform electric field in regenerated brass melt, oriented migration of the gold, silver and tin elements is achieved within short treatment time, and the quality of the regenerated brass is improved. Therefore, the purpose of high-value cyclic utilization of regenerated brass is achieved.

The application provides a composite brazing sheet, a preparation method thereof and a brazing body. The composite brazing sheet comprises a core material, a brazing material layer arranged on at least one side surface of the core material, and an intermediate layer arranged between the core material and the brazing material layer. The intermediate layer comprises a low-melting-point phase, and the melting point of the low-melting-point phase is not higher than 600 DEG C. The low-melting-point phase comprises magnesium and at least one element selected from bismuth and tin. The composite brazing sheet provided by the application is provided with an intermediate layer, and the intermediate layer forms a specific low-melting-point phase, so that the breaking of the oxide film and the improvement of the uniformity of wetting are realized, the formation of an effective weld is more favorable, the use of a brazing agent in the CAB brazing process is avoided, the problem of brazing agent residue is completely avoided, and good brazing effect is ensured.

The application discloses a high-performance titanium alloy material for promoting spheroidization and a preparation method thereof, and belongs to the field of high-strength and high-toughness titanium-based alloy materials, and comprises the following steps: high-purity raw materials are smelted into titanium-based alloy button ingots containing different tin element contents by using a vacuum induction smelting furnace; after homogenization treatment of the titanium-based alloy button ingots, a high-performance titanium alloy material is obtained by adopting a sectional hot rolling process; and the high-performance titanium alloy material is subjected to mechanical property testing, and the longitudinal mechanical test results are as follows: yield strength is 880-1080 MPa, tensile strength is 1020-1220 MPa, and elongation is 12.5-23%; and the transverse tensile test results are as follows: yield strength is 920-1100 MPa, tensile strength is 1050-1290 MPa, and elongation is 11-20%. The Ti80 zirconium element is replaced by doping of the tin element, and the rolling process is controlled to promote spheroidization of the structure, so that the strength and ductility of the titanium-based alloy are improved.

The application discloses a method for recovering tin from MOCA wastewater and waste materials, which comprises the following steps: pretreating tin-containing MOCA wastewater, pretreating tin-containing MOCA waste materials, preparing a tin-containing hydrochloric acid solution and preparing crude tin oxide, etc., wherein the MOCA wastewater and waste materials are pretreated, then hydrochloric acid is used to separate tin elements in the MOCA production wastewater and the MOCA production waste materials to obtain a tin-containing hydrochloric acid solution, and then the tin-containing hydrochloric acid solution is neutralized by an alkaline substance to form a tin oxide precipitate; the crude tin oxide prepared by the method has a high tin content and less impurities, and can be directly applied to tin smelting raw materials or tin chemical production raw materials; sodium chloride solution is directly recovered through evaporation crystallization; and the MOCA waste materials after tin separation can also return to the MOCA production line, so that the utilization rate of the metal tin and the MOCA raw materials is effectively improved, the generation of hazardous waste is reduced, and good economic and environmental benefits are achieved.

The application discloses a preparation method of a tin-plated soft magnetic composite material and the soft magnetic composite material. The preparation method comprises the following steps: (1) preparing an iron-based soft magnetic powder and performing pretreatment; (2) configuring a tin-plating solution containing a tin salt; (3) chemical plating; and (4) annealing: ① passing high-purity argon gas, heating to 240-260 DEG C at a speed of 2-3 DEG C / min, and keeping the temperature for 30-120 min; ② switching to a mixed gas atmosphere of argon and oxygen, heating to 280-300 DEG C at a speed of 1-2 DEG C / min, and keeping the temperature for 60-90 min; and ③ restoring the high-purity argon gas atmosphere, cooling to 150-200 DEG C at a speed of 1-2 DEG C / min, keeping the temperature for 30-60 min, and then cooling to room temperature. The grain coarsening of the iron-based matrix is completely avoided. Meanwhile, the tin element is distributed along the grain boundaries by utilizing the selective wetting characteristics of liquid tin at the grain boundaries, and the solid solution amount in the grain is less than 0.01 wt%.

The invention discloses a wide-spot tin bronze laser cladding method, and belongs to the technical field of laser remanufacturing. The method comprises the following steps: physically dehumidifying tin bronze powder; the minimum critical preheating temperature of the base material is determined based on the dynamic relation between the molten pool solidification life and the bubble escape time; configuring a rectangular flat-top wide light spot, and calculating a critical power density upper limit based on a tin element saturated vapor pressure model; and performing laser cladding under the condition that the actual power density is controlled to be maintained in a preset safety range. According to the method, the multi-physics field coupling model and the wide light spot technology are combined, the temperature gradient is reduced through the flat-topped light beams, the machining efficiency is remarkably improved, meanwhile, tin element burning loss is effectively restrained, the number and size of air holes in the coating are reduced, and preparation of the tin bronze coating with the low dilution rate and the high quality is achieved.

The invention relates to the technical field of ferroelectric thin film materials, in particular to a ceramic-based high-energy-storage-density ferroelectric thin film material and a preparation method thereof.The preparation method comprises the following steps that S1, a premix is prepared, S2, a substrate is prepared, S3, a finished product is prepared, spin coating and curing treatment are conducted on the surface of the substrate through the premix, and the ceramic-based high-energy-storage-density ferroelectric thin film material is prepared. According to the invention, zinc and tin elements are introduced in the preparation of the additive, the zinc element can improve the insulativity of the film material, and by adding the tetrabutyl titanate and barium nitrate in the mixed solution, the titanium and barium elements contained in the mixed solution can form a regular crystal structure in the film, so that the film can accommodate charges orderly and avoid disorder and loss of the charges; barium ions with large ion radius can expand crystal lattices to form a stable interlayer structure, so that charge loss can be reduced, and electricity storage efficiency can be improved.

The invention relates to the technical field of laser cladding, in particular to a method for compounding two kinds of metal through laser cladding. The method comprises the following steps of S1, base material pretreatment, S2, metal wire preparation, S3, metal wire pretreatment, S4, first-time cladding treatment, S5, second-time cladding treatment, S6, third-time cladding treatment and S7, aftertreatment. According to the invention, the transition metal wire is firstly deposited to form the transition layer, then the first metal wire and the second metal wire are sequentially deposited, nickel and copper elements in the transition metal wire and the base material form a metallurgical compatible interface, titanium and niobium elements refine grains and release stress, and chromium and tungsten elements in the first metal wire form high-hardness carbide and boride; the wear-resistant framework is provided, the tin element in the second metal wires enhances the surface lubricity, smooth transition of thermal expansion coefficients is achieved, interface stress is remarkably reduced, and therefore the reliability problem caused by insufficient binding force and easy cracking of the coating is directly solved.

The invention discloses a large-scale treatment method for an Al-Bi-Sn alloy hydrolysis byproduct. The large-scale treatment method comprises the following steps: S1, crushing the byproduct into fine particles; s2, feeding crushed by-products into an alkaline leaching reaction kettle for alkaline leaching treatment; s3, centrifugally separating the filtrate and the filter residue; s4, the filter residues are fed into an enamel reaction kettle for acid leaching treatment, and bismuth elements and tin elements in the filter residues are converted into bismuth chloride and tin chloride; s5, aluminum powder is added into the solution obtained after acid leaching for a replacement reaction, and a spongy bismuth and tin mixture is obtained; s6, the mixture is heated, and liquid tin and solid bismuth are obtained; s7, performing high-pressure dissolution reaction on the filtrate; s8, performing seed crystal decomposition on the filtrate, and crystallizing the sodium aluminate solution to separate out aluminum hydroxide; s9, calcining the aluminum hydroxide to convert the aluminum hydroxide into alpha-type aluminum oxide; the method has the advantages that comprehensive and efficient recovery of aluminum, bismuth and tin in byproducts can be achieved, comprehensive power consumption is low, and resource waste is reduced.

The invention relates to the technical field of waste lead plaster recycling, in particular to an extracting agent for recycling tin element in waste lead plaster and a recycling method. The invention provides an extracting agent for recycling tin element in waste lead plaster. The extracting agent comprises a tin solubilizer containing carboxyl, ketone group and disulfide bond, and an alkali cosolvent, in the extracting agent, the molar ratio of the carboxyl group to the ketone group to the disulfide bond to the hydroxyl group in the alkali cosolvent is (1.0-4.0): (0.5-3.0): (0.3-2.0): (1.0-5.0); the pH value of the extracting agent is 9-10. According to the extracting agent provided by the invention, the indissolvable tin oxide in the waste lead plaster is converted into a soluble tin complex by utilizing the action of carboxyl, ketone group and disulfide bond in the tin solubilizer with Sn < 4 + > and combining the OH <-> and alkaline action of the alkaline cosolvent, so that a foundation is laid for efficient recovery.