620 results about "Silicon oxidation" patented technology

The present invention is a negative electrode active material comprising negative electrode active material particles. The negative electrode active material is characterized in that: the negative electrode active material particles include porous carbon structures; silicon and a silicon oxide are dispersed in the interiors of the porous carbon structures; a low-valent nanosilicon oxide in an amorphous state is dispersed in at least surface-layer portions of the interiors of the porous carbon structures; the low-valent nanosilicon oxide is SiOx, where x is less than 1.0; and nanosilicon with a crystalline structure is dispersed at least in deep layer portions of the interiors of the porous carbon structures, such portions being deeper than where the low-valent nanosilicon oxide is dispersed. Due to this configuration, it is possible to provide a negative electrode active material that can increase capacity while maintaining battery characteristics.

The invention discloses a tungsten alloy material containing a silicon carbide reinforced Al2O3-SiO2-based multiphase ceramic coating and a preparation method of the tungsten alloy material, and belongs to the field of ceramic material preparation. The method comprises the following steps: ball-milling and mixing powder raw materials containing modified silicon carbide, aluminum oxide, silicon dioxide and lead oxide with a solvent, and defoaming to obtain ceramic slurry; the ceramic slurry is brushed on the surface of a tungsten alloy matrix subjected to surface pretreatment, and after drying, vacuum sintering is performed to obtain the tungsten alloy. The compact silicon carbide reinforced Al2O3-SiO2-based multiphase ceramic coating is introduced to the surface of a tungsten alloy matrix, the hardness, the high-temperature oxidation resistance and the high-temperature carburization resistance of a tungsten alloy material are remarkably improved, the stability of the coating can be improved through the silicon carbide distributed in a dispersed point shape, the thermal expansion coefficient of the coating is evenly reduced, and the hardness, the high-temperature oxidation resistance and the high-temperature carburization resistance of the tungsten alloy material are improved. The thermal expansion coefficient difference value between the multiphase ceramic coating and a tungsten alloy matrix is reduced, and the thermal shock resistance of the coating is improved.

An acoustic wave device includes a silicon support substrate, a silicon nitride film on the support substrate, a silicon oxide film on the silicon nitride film, a piezoelectric layer on the silicon oxide film and using Y-cut X-SAW propagation lithium tantalate, and an IDT electrode on the piezoelectric layer. A film thickness of the piezoelectric layer is equal to or less than about 1λ, Euler angles of the piezoelectric layer are (0±5°, θ, 0±5°) or (0±5°, θ, 180±5°), θ in the Euler angles of the piezoelectric layer is about 95.5°≤θ<117.5° or about −84.5°≤θ<−62.5°, and a relationship between θ in the Euler angles of the piezoelectric layer and a film thickness of the silicon nitride film is a combination shown in Table 1 or Table 2.

A preparation method for a solar cell includes: providing a silicon wafer having a first surface and a second surface opposite to the first surface; forming an ultrathin silicon oxide layer on the first surface of the silicon wafer, and sequentially forming a phosphorus-doped amorphous silicon layer and a silicon oxide mask layer on the ultrathin silicon oxide layer; and annealing the silicon wafer to densify the silicon oxide mask layer and convert the phosphorus-doped amorphous silicon layer into a phosphorus-doped polycrystalline silicon layer.

The invention provides a boron nitride-containing resin composition and application thereof. The boron nitride-containing resin composition comprises a combination of a resin material and modified boron nitride, the modified boron nitride is prepared by the following method which comprises the following steps: mixing boron nitride and a sintering aid, sintering and crushing to obtain the modified boron nitride, the sintering aid comprises any one or a combination of at least two of calcium oxide, magnesium oxide, silicon oxide, yttrium oxide, niobium oxide and potassium feldspar. Through the design of a modification method, the modified boron nitride has a high filling rate in a resin material, and the boron nitride-containing resin composition containing the modified boron nitride not only has high thermal conductivity, but also has high peel strength and excellent adhesive property, so that the metal foil-clad laminated board has excellent comprehensive effects in the aspects of high thermal conductivity and high reliability.

The invention relates to a negative electrode material, a preparation method thereof and a lithium ion battery, the negative electrode material comprises a silicon-based material and a coating layer located on at least part of the surface of the silicon-based material, the silicon-based material comprises silicon oxide and lithium silicate, and the material of the coating layer comprises a carbon material; the method comprises the following steps: dissolving 20 mg of a negative electrode material in 10 ml of deionized water to form slurry, carrying out a Zeta potential test on the slurry by adopting a nanometer particle size and Zeta potential analyzer, in a Zeta potential test distribution diagram of the slurry, the intensity of a first characteristic peak of the slurry in a Zeta potential interval of-50 mV to-40 mV is I1, the intensity of a second characteristic peak of the slurry in a Zeta potential interval of-65 mV to-50 mV is I2, and the first characteristic peak and the second characteristic peak are shown in the specification. The intensity of the third characteristic peak in the Zeta potential interval of-35mV to-25mV is I3, and the relation among I1, I2 and I3 meets the conditions that I2 / I1 is greater than or equal to 0 and less than or equal to 2.0, and I3 / I3 is greater than or equal to 0 and less than or equal to 1.0. According to the negative electrode material, the volume expansion of the negative electrode material can be reduced, and the rate capability and the cycle performance of the negative electrode material are improved.

The invention relates to the technical field of lithium batteries, and discloses a silicon-based composite negative electrode material and a preparation method thereof, a lithium ion battery negative electrode plate and a lithium ion battery. The negative electrode material comprises a matrix, a carbon layer coated on the outer surface of the matrix and a graphene oxide sheet layer coated outside the carbon layer, the substrate is a silicon oxide SiOx, and 0 lt; xlt; 2; the weight ratio of the matrix to the carbon layer to the graphene oxide sheet layer is 1: (0.1-0.2): (0.2-0.3). The silicon oxide SiOx is coated on the substrate by the carbon layer, so that the direct contact between the substrate and an electrolyte can be reduced, the probability of side reaction can be reduced, the formation of a stable SEI interface and a graphene oxide sheet layer is facilitated, and the conductivity and cycling stability of the silicon-based composite negative electrode material can be improved; meanwhile, the lithium ion battery containing the silicon-based composite negative electrode material has a relatively low expansion rate, and the first-cycle coulombic efficiency and the cycle stability of the battery can be effectively improved.

The invention discloses an insulating heat-conducting glass fiber reinforced polyphenylene sulfide composite material and a preparation method thereof. The composite material comprises the following raw material components: 30-50 parts by mass of polyphenylene sulfide, 10-20 parts by mass of glass fiber, 30-50 parts by mass of a heat-conducting filler, 5-10 parts by mass of a compatilizer and 0.3-1 part by mass of a coupling agent, and the heat-conducting filler is selected from one or more of graphite, silicon carbide, aluminum oxide, magnesium oxide, aluminum nitride and hexagonal boron nitride; the compatilizer is selected from a glycidyl methacrylate graft polymer. The polyphenylene sulfide composite material prepared by the preparation method disclosed by the invention has high insulativity, high thermal conductivity and good mechanical properties.

The invention discloses a seawater conductivity sensor electrode material based on a copper-nickel-based nanostructure and a preparation method, the electrode material comprises: a substrate, a copper-nickel-based nanostructure layer being formed on the surface of the substrate; the substrate comprises an insulating compound and a coating coated on the surface of the insulating compound, the insulating compound comprises at least one of high-resistance silicon, silicon oxide, aluminum oxide ceramic and plastic, the coating comprises a metal coating and / or a semiconductor coating, and the copper-nickel-based nanostructure layer is in a dendritic crystal or cluster form. The copper-nickel alloy nanostructure is a core material of the electrode, so that the electrode material has high specific surface area and rich active sites, the measurement accuracy and measurement limit of the electrode material can be improved, the service life can be prolonged, the manufacturing cost can be reduced, and the application requirements of the ocean Internet of Things can be met.

The application provides a negative electrode material and a preparation method thereof and a secondary battery, and relates to the technical field of battery materials. The negative electrode material comprises a silicon-based inner core and a carbon layer coated on the surface of the silicon-based inner core, wherein the silicon-based inner core comprises nanosilicon and a silicate containing a metal element M; the negative electrode material is subjected to section analysis and energy spectrum analysis, and meets the conditions of k1<=10, k2<=5 and 0.1 The preparation method of the negative electrode material comprises the following steps: heating and evaporating pre-disproportionated silicon monoxide material and M metal source material to obtain silicon monoxide gas and metal source gas; mixing and condensing the two kinds of gas to obtain an inner core material; and performing carbon coating treatment to obtain the negative electrode material. In the negative electrode material prepared by the application, the metal silicate effectively separates the nanosilicon domain and the silicon oxide domain, and is uniformly distributed, and the negative electrode material has high initial efficiency and excellent cycle performance.

The invention discloses warm-keeping polyimide aerogel and a preparation method thereof, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: 1, synthesizing a polyamide acid solution; 2, adding amino-containing organic silicon into the polyamide acid solution, mixing, and defoaming to form a spinning solution; step 3, preparing a nanofiber membrane by electrostatic spinning of the spinning solution; 4, crushing the nanofiber membrane, dispersing the crushed nanofiber membrane in a solvent, standing for 24-48 hours, and freeze-drying to obtain aerogel; and step 5, carrying out stepped heating thermal imidization treatment to obtain the polyimide aerogel. Amino-containing organic silicon is used as a cross-linking agent of polyamide acid, chemical connection is added for a three-dimensional network structure of the gel, and the structural stability of the aerogel is improved. In the thermal imidization process, organic silicon generates a silicon oxide and Si-O-Si network through staged pyrolysis, the silicon oxide exists in fiber gaps and forms an organic-inorganic hybrid interface with PI fibers, and the structural stability is further improved.

The invention provides a coating material suitable for a quartz product and a preparation method of the coating material. The water-based coating material comprises a normal-temperature film-forming medium, a high-temperature film-forming medium, a ceramic functional additive and deionized water, the normal-temperature film-forming medium comprises a thickening binder, a dispersing agent, a defoaming agent and a flatting agent; the high-temperature film forming medium comprises low-melting-point glass powder and a high-temperature binder; the ceramic functional additive comprises silicon nitride, silicon carbide, aluminum oxide and zirconium oxide powder. The low-melting-point glass powder and the ceramic functional additive can improve the adhesive force, compactness and mechanical performance of the coating and adjust the expansion coefficient of the coating, and the room-temperature film forming medium can adjust the viscosity, fineness and the like of the coating material. And the binding force and compactness between the coating material and the quartz product can be ensured. The coating can effectively protect the quartz product, prevent erosion and stress damage of other physical or chemical processes to quartz, and prolong the service life of the quartz product.

The invention provides a silicon-based material and a preparation method thereof, a lithium ion battery monomer, a battery device and a power utilization device, the silicon-based material comprises a porous carbon matrix and silicon nanoparticles located in pores of the porous carbon matrix, the surface of each silicon nanoparticle is provided with a silicon oxide passivation layer formed through a passivation reaction, the ratio of the ID / IG of the silicon-based material to the ID / IG of the porous carbon matrix before the passivation reaction is (0.95-1.05): 1; the mass multiple of the Si element and the C element in the silicon-based material is recorded as A, the mass multiple of the Si element and the C element before the passivation reaction is recorded as B, and the ratio of A to B is (0.95-1.05): 1. According to the invention, the thermal safety performance, the cycle performance and the rate capability of the lithium ion battery monomer can be improved.

A coated article including a first antireflective (AR) coating supported by a glass substrate, wherein the first coating may include, moving away from the glass substrate: a dielectric first high index layer; a dielectric first low index layer; a dielectric second high index layer; a dielectric second low index layer comprising an oxide of silicon; a dielectric third high index layer comprising an oxide of niobium; a dielectric first medium index layer, wherein the third high index layer comprising the oxide of niobium is located between and directly contacting the second low index layer comprising the oxide of silicon and the first medium index layer; a dielectric third low index layer; and an overcoat layer; wherein the first coating contains no IR reflecting layer based on silver and / or gold; wherein, from the perspective of a viewer of the coated article, the first coating may be configured so that the coated article has a film side reflective ΔE* value of no greater than 3.0 upon heat treatment of at least about 580 degrees C. The ΔE* value(s) may be measured either with a substantially symmetrical / similar AR coating on the other side of the same glass substrate, or absent any AR coating on the other side of the glass substrate.

The invention provides a battery negative electrode plate and a battery, the battery negative electrode plate comprises a silicon-based negative electrode active material and a binder, the binder is a product obtained by crosslinking a phenylboronic acid compound modified polyacrylic acid compound and a hydroxylated carbon nanotube, the silicon-based negative electrode active material comprises at least one of a silicon material, a silicon oxide material, a silicon carbon material and a silicon alloy material. The invention provides a battery negative plate. A three-dimensional conductive network binder based on crosslinking of a phenylboronic acid compound modified polyacrylic acid compound and a hydroxylated carbon nanotube and a silicon-based negative electrode material are adopted. The network structure provides excellent mechanical strength and flexibility for the negative electrode, and due to the excellent mechanical strength and flexibility, the silicon negative electrode shows excellent cycling stability, high reversible capacity and stable electrochemical impedance in a battery test.

The invention provides an MEMS component and a vibration cavity structure and a liquid ejection head thereof, the MEMS component comprises a piezoelectric actuator structure, and the vibration cavity structure is in contact with the piezoelectric actuator structure; the vibration cavity structure comprises a vibration cavity and a cavity wall, and the inner side wall of the cavity wall is arc-shaped; the vibration cavity structure is made of silicon and / or silicon oxide. The cavity wall of the vibration cavity structure disclosed by the invention adopts the design of the arc-shaped inner side wall, so that the deformation volume of the vibration cavity is increased on the premise that the density of the spray holes of the liquid spray head is not changed, and the size of liquid drops is effectively increased; and meanwhile, the liquid ejection head can realize ejection of liquid drops with the same size by using relatively small driving voltage, so that the energy consumption is reduced.

The invention discloses a method for recovering high-purity fluorine and silicon from fluorine-silicon slag and co-producing a low-alkali fluorine-free accelerator, which comprises the following steps: S1, dissolving the fluorine-silicon slag in a sodium hydroxide solution to obtain a solution A; s2, adding dilute sulphuric acid into the solution A, reacting until gel is obtained, and filtering to obtain filtrate A and high-purity silicon dioxide gel; s3, adding calcium sulfate and EDTA (Ethylene Diamine Tetraacetic Acid) into the filtrate A, stirring and reacting, and filtering after the reaction is finished to obtain calcium fluoride and filtrate B; and S4, taking clear water, heating, carrying out heat preservation, then adding aluminum sulfate, lithium sulfate, diethanol amine and the filtrate B obtained in S3, continuously stirring until the aluminum sulfate is completely dissolved, then adding hydrated magnesium silicate, continuously carrying out heat preservation stirring, and obtaining the low-alkali fluorine-free accelerator after stirring is finished. The method is simple in process and easy to implement industrially, and fluoride and silicon oxide obtained through separation are high in purity and beneficial to follow-up extension application; more importantly, high-value recycling of the fluorosilicon slag is achieved, and the problems of stockpiling waste and environmental pollution of the fluorosilicon slag are solved.

Composite electrode particles coated with a granular silicon structure, a carbon layer, and zinc oxide; the composite electrode particle is used in an electrode of a solid-state or semi-solid-state battery; the composite electrode particle comprises: a porous carbon particle with a multitude of holes; The carbon layer is an amorphous carbon layer applied to an outer surface of the porous carbon particle; the amorphous carbon layer exhibits a continuous structure formed from amorphous carbon; the amorphous carbon layer serves to prevent expansion of the composite electrode particle and thus to prevent the composite electrode particle from bursting as lithium ions accumulate on the composite electrode particle; A large number of silicon particles are dispersed within the amorphous carbon layer; an outer surface of some of the silicon particles is coated with a silicon oxide layer, which consists of SiO₂. x is formed where 0 < x ≤ 2; and The zinc oxide layer (ZnO) is applied to the outer surface of the amorphous carbon layer; the zinc oxide layer is a continuous structure formed from a multitude of zinc oxide particles; and wherein, as the lithium ions fill the silicon particles and expand the size of the silicon particles, the zinc oxide layer serves to protect the composite electrode particle by a specific ductility in order to preserve its integrity.

The invention provides an adhesive for bonding an elastomer and glass or metal, which comprises a component A, a component B and a component C. The component A comprises the following components in percentage by mass: 5-15% of modified chlorinated polypropylene resin; 60%-90% of a solvent; 3%-20% of solvent oil; 0.1%-3% of gaseous silicon; the component B comprises the following components in percentage by weight: 10%-50% of isocyanate; 2%-20% of silane; 30%-88% of a solvent; the component C comprises the following components in percentage by weight: 3%-15% of an anti-rust pigment; 30%-85% of a solvent; 0.5%-5% of gaseous silicon; 0.5%-5% of zinc oxide; 0.2%-15% of an amino curing agent and 0.2%-5% of an amino accelerator. The adhesive disclosed by the invention can achieve the effects that a base material is completely damaged after bonding, good bonding force is kept after aging, the base material is damaged, and meanwhile, the adhesive has the characteristics of high bonding speed and capability of meeting the requirements of an industrial production process.

The invention provides a sintered neodymium-iron-boron magnet and a preparation method thereof. The sintered neodymium-iron-boron magnet comprises a neodymium-iron-boron sintered body and a heavy rare earth layer, wherein the heavy rare earth layer comprises heavy rare earth and an oxide; part or all of the surface of the neodymium-iron-boron sintered body is covered by the heavy rare earth layer, and heavy rare earth is distributed in an area, at least 3.5 mm deep from the surface, of the neodymium-iron-boron sintered body covered by the heavy rare earth layer; the oxide is one or more of aluminum oxide, silicon oxide, calcium oxide, magnesium oxide, zirconium oxide, copper oxide and zinc oxide, and the heavy rare earth is one or more of dysprosium, terbium, holmium and gadolinium. At least one part of the surface of the neodymium-iron-boron sintered body is covered with the heavy rare earth layer containing the oxide, when the heavy rare earth is diffused at a high temperature, the heavy rare earth enters the neodymium-iron-boron sintered body, the oxide is high in melting point, relatively thick and left on the surface of the neodymium-iron-boron sintered body, the effect of a spacer is achieved, magnet adhesion can be effectively prevented when the heavy rare earth is diffused, and the service life of the magnet is prolonged. And the preparation of the magnet is more convenient, and industrial application is realized.

A gas barrier laminate includes a substrate layer containing a resin, an inorganic oxide layer, and a gas barrier coat layer in this order. The gas barrier coat layer is a cured article of a composition, and the composition contains a water-soluble polymer, a first silicon compound composed of a silicon alkoxide in formula (1) below, and a second silicon compound composed of a silicon alkoxide in formula (2) below. The ratio of the water-soluble polymer to the water-soluble polymer and the second silicon compound is 55 to 95% by mass, and the ratio of the first silicon compound to the first silicon compound and the second silicon compound is more than 0% by mass and 89% by mass or less. Si(OR1)4 ... (1) (R2Si(OR3)3)n ... (2) (in formulas (1) and (2) above, R1 and R3 each denote an alkyl group, and R2 denotes an organic functional group; n represents an integer equal to or greater than 1).

The application relates to the technical field of lithium ion battery materials, and discloses a low-expansion silicon-carbon material and a preparation method thereof. The low-expansion silicon-carbon material has a porous core-shell structure, the inner core is graphene / metal-doped amorphous carbon-coated nano silicon, and the shell is boron-doped amorphous carbon. The preparation method comprises the following steps: firstly, a silicon oxide compound, a graphene oxide solution and an organic metal polymer are added into an organic carbon source solution, spray drying is carried out, and an oxidized graphene-coated metal-doped silicon oxide precursor material is obtained through reaction; secondly, a mixed gas of a boron source gas and argon is introduced into the oxidized graphene-coated metal-doped silicon oxide precursor material, and a boron-doped silicon-carbon composite material is obtained through reaction; and thirdly, the boron-doped silicon-carbon composite material is soaked in a hydrofluoric acid solution, and the low-expansion silicon-carbon material is obtained after drying. Through the technical scheme, the problems of high expansion and poor rate performance of the silicon-carbon material in the related art are solved.

The invention discloses a method for smelting yellow phosphorus and alloy by using high-magnesium low-grade phosphorite, which comprises the following steps of: proportioning the high-magnesium low-grade phosphorite, a calcium flux, a siliceous flux, iron ore and a carbonaceous reducing agent, and carrying out reduction smelting treatment, so that part of apatite is reduced to generate yellow phosphorus steam, and part of phosphorus steam and reduced iron are chemically combined to form the alloy; calcium oxide, magnesium oxide, silicon oxide and aluminum oxide form low-melting-point smelting slag, and activated slag is obtained through water quenching. The method can provide technical reference for efficient resource utilization of low-grade phosphorite, especially high-magnesium and high-iron type low-grade phosphorite, three products of high-quality yellow phosphorus, high-added-value ferrophosphorus and activated smelting slag are obtained at the same time, and no new solid waste is generated in the process.

The invention relates to the technical field of environmental waste treatment, and discloses a preparation method of modified household garbage incineration fly ash, the modified household garbage incineration fly ash comprises the following components by mass: 90-99 parts of a fly ash matrix; 0.1 to 2 parts of a plasma activation layer; 0.5 to 8 parts of a silicon oxide coating layer; the preparation method comprises the following steps: pretreating the fly ash; performing plasma activation; preparing a mineralizing solution; performing biomimetic mineralization; and calcining at low temperature. The plasma activation layer is introduced, the silicon oxide coating layer is constructed, and the phosphorus oxide or the boron oxide is cooperatively introduced, so that the microstructure and the surface chemical property of the material are effectively optimized, the specific surface area and the pore volume of the material are increased, and a microporous, mesoporous and macropore synergistic multistage pore channel structure is constructed; the adsorption capacity and the adsorption rate of various waste gas pollutants are improved.

A laminated substrate includes a silicon substrate, and a silicon oxide film laminated to the silicon substrate, wherein the silicon oxide film has a through hole penetrating in a thickness direction, wherein the silicon substrate has a hole communicating with the through hole, wherein the hole includes a first portion adjacent to the through hole and a second portion adjacent to the first portion on an opposite side of the through hole, wherein the first portion includes a plurality of first recesses whose width changes cyclically in the thickness direction, wherein the second portion includes a plurality of second recesses whose width changes cyclically in the thickness direction, and wherein a maximum value of the width of the first recesses is smaller than a maximum value of the width of the second recesses.

An oxide film etching method includes: forming a protective film of a metal or a metal nitride that does not contain silicon so as to cover a protection target film, among the protection target film containing silicon and a silicon-containing oxide film exposed on a surface of a substrate; supplying, to the substrate, a mixed gas including a hydrogen fluoride gas and an ammonia gas to react with the silicon-containing oxide film, and modifying the oxide film to generate a reaction product; and sublimating and removing the reaction product.

The invention relates to the technical field of lithium ion batteries, in particular to a negative electrode material of a lithium ion battery and a preparation method of the negative electrode material. The negative electrode material comprises a porous matrix, a conductive carbon material and a coating layer from inside to outside. And the porous matrix is made of silicon, silicon alloy or silicon oxide. The porous substrate comprises a plurality of pores, and at least part of the pores are opened in the surface of the porous substrate. Part of the conductive carbon material is located on the surface of the porous matrix, and part of the conductive carbon material is located in pores of the porous matrix. And the coating layer has ionic conductivity and / or electronic conductivity, and wraps the whole formed by the porous matrix and the conductive carbon material. Based on the lithium ion battery negative electrode material provided by the invention, the damage to the material caused by silicon volume expansion when a silicon material, a silicon alloy material and a silica material are used as the negative electrode material can be reduced, and the conductivity of the negative electrode material can be improved, so that the electrochemical performance of the silicon-based negative electrode material is improved.

A lithium-ion cycling battery comprises a negative electrode and an ionically conductive electrolyte. The negative electrode contains an electroactive material, which includes a silicon oxide-based material. The electrolyte comprises an organic solvent, a lithium salt, and a ternary additive system with a phosphite compound, a borate compound, and a sulfate compound.

The present invention discloses a multi-source solid waste recycling method based on composition design for calcium-silicon-aluminium-magnesium oxide, and belongs to the field of solid waste recycling. The present invention collects multi-source solid waste composition data; calculates and designs compositions of calcium oxide, silicon oxide, aluminium oxide and magnesium oxide units to obtain an inorganic non-metallic raw material with a target composition; and melts the raw material into slag, and uses carbon, metallic aluminium, aluminium nitride, aluminium carbide, silicon nitride and silicon carbide in the multi-source solid waste as reducing agents, wherein the slag provides a high-temperature homogeneous reaction environment and serves as a "solvent" for reactants, the reducing agents reduce valuable metals in the slag to obtain an alloy, thereby achieving recovery of the valuable metals, and the slag is used for the inorganic non-metallic material in a high-value mode. The present invention achieves the synergistic recycling of the multi-source solid waste on the alloy and the inorganic non-metallic material by pyrometallurgy, and has the advantages of a short flow, a wide application range, strong operability and easy industrialization.

The invention provides a paper-plastic cup package and a preparation method thereof. The package comprises a cup body and a cover film, wherein 150-300g / m < 2 > paper serves as a base material layer of the cup body, and a coated polylactic acid barrier layer and a composite heat sealing layer are sequentially arranged on the inner side of the base material layer. Wherein the barrier property of the barrier layer is enhanced through aluminizing / silicon oxide / aluminum oxide, the heat sealing layer adopts a gradient structure of a blend of PBS at the center part and PBS / PCL at the edge part, and a PCL content linear increasing mixing region with the width of 3-5mm is arranged at the edge part to optimize thermal stress distribution. According to the preparation method, the base material layer, the barrier layer and the heat sealing layer are bonded step by step through a dry type composite technology, and interlayer combination is achieved by combining hot press molding and a multi-stage curing technology; the cup body forms a sealing structure matched with the concave ring of the cover body through rolling flanging, and the cover body is integrally connected with the cup body through heat sealing. The structure adopts a full-degradable material system, has excellent oxygen-blocking / water-blocking performance and heat-sealing reliability, and is particularly suitable for long-shelf-life packaging requirements of liquid food such as yoghourt and the like.