2711 results about "Molybdenum" patented technology

Embodiments of methods of filling features with molybdenum (Mo) include depositing a first layer of Mo in a feature including an opening and an interior and non-conformally treating the first layer such that regions near the opening preferentially treated over regions in the interior. In some embodiments, a second Mo layer is deposited on the treated first layer. Embodiments of methods of filling features with Mo include controlling Mo precursor flux to transition between conformal and non-conformal fill.

Provided herein are methods and apparatuses for reducing line bending when depositing a metal such as tungsten, molybdenum, ruthenium, or cobalt into features on substrates by periodically exposing the feature to nitrogen, oxygen, or ammonia during atomic layer deposition, chemical vapor deposition, or sequential chemical vapor deposition to reduce interactions between metal deposited onto sidewalls of a feature. Methods are suitable for deposition into V-shaped features.

Provided herein are methods and apparatuses for reducing line bending when depositing a metal such as tungsten, molybdenum, ruthenium, or cobalt into features on substrates by periodically exposing the feature to nitrogen, oxygen, or ammonia during atomic layer deposition, chemical vapor deposition, or sequential chemical vapor deposition to reduce interactions between metal deposited onto sidewalls of a feature. Methods are suitable for deposition into V-shaped features.

Provided are methods of filling patterned features with molybdenum (Mo). The methods involve selective deposition of Mo films on bottom metal-containing surfaces of a feature including dielectric sidewalls. The selective growth of Mo on the bottom surface allows bottom-up growth and high quality, void-free fill. Also provided are related apparatus.

The invention relates to the technical field of high-corrosion-resistance stainless steel pipe processing, and discloses a high-corrosion-resistance high-molybdenum stainless steel pipe processing technology based on gradient carbide design, which comprises the following steps: applying an axial gradient magnetic field in a stainless steel pipe rolling process, and combining with dynamic strain rate matching rolling to promote molybdenum atom grain boundary migration and inhibit carbide coarsening, so as to obtain a high-molybdenum-resistance stainless steel pipe. Nano carbide smaller than or equal to 50 nm is formed on the surface layer, and submicron carbide of 200-500 nm is formed on the core part; after rolling, micro-arc oxidation and phosphonic acid group silane dipping are immediately carried out to form a self-repairing passivation film; and finally, an alternating magnetic field and pulse current are adopted for cooperative annealing, and a grain boundary molybdenum-poor region and residual stress are eliminated. Through magnetic field-chemical-thermal multi-field coupling, the material has erosion corrosion resistance of a gradient carbide structure, dynamic passive film self-repairing and low-temperature high toughness, and is suitable for long-acting protection of deep sea oil and gas pipelines.

The invention discloses a method for evaluating the mineralization potential of porphyry copper-(gold-molybdenum) ore. The evaluation method comprises the following steps: determining candidate rock masses with relatively high mineralization potential according to an oxygen fugacity value of magma zircon and / or a magma water content value of hornblende in a rock sample in an evaluation area; the aluminum saturation index ASI of the candidate rock mass is measured and calculated, the distribution coefficient and the distribution coefficient ratio of Cu, Au and Mo between fluid and melt are determined according to the ASI, simulation calculation is conducted through a Rayleigh fractionation model according to the distribution coefficient and / or the distribution coefficient ratio, and the content ratio of Au to Cu to Mo to Cu of the candidate ore body is obtained. According to the method, the mineralization potential of the porphyry copper ore and the enrichment degree and grade of Cu, Au and Mo of potential ore bodies can be rapidly and accurately evaluated.

The invention relates to the technical field of biodiesel hydrogenation catalysts, and particularly discloses a hydrogenation catalyst of organic bentonite loaded cerium-zirconium solid solution and nickel-molybdenum phosphide as well as a preparation method and application of the hydrogenation catalyst. The hydrogenation catalyst with the organic bentonite loaded with the cerium-zirconium solid solution and the nickel-molybdenum phosphide comprises an organic bentonite carrier, the cerium-zirconium solid solution and the nickel-molybdenum phosphide, the loading capacity of the cerium-zirconium solid solution on the organic bentonite carrier is 2-2.5 wt%; the cerium-zirconium solid solution comprises cerium dioxide and zirconium dioxide; the loading capacity of the nickel molybdenum phosphide on the organic bentonite carrier is 10-15 wt%; and the nickel molybdenum phosphide is Ni2Mo3P. The organobentonite carrier provides an acid site and promotes deoxidation path optimization, the layered structure of the organobentonite carrier can limit the cerium-zirconium solid solution and the nickel-molybdenum phosphide, and organic groups are also embedded into the layered structure, so that the organic compatibility of the organobentonite carrier to biodiesel is improved, and the catalytic efficiency is improved. The cerium-zirconium solid solution provides oxygen vacancies, promotes hydrogenation / deoxidation, and improves the thermal stability and sintering resistance of the catalyst.

The invention discloses a multi-component composite oxide dispersion strengthening molybdenum alloy and a preparation method thereof, and relates to the technical field of refractory metal powder metallurgy preparation. The molybdenum alloy comprises a molybdenum matrix and a Y-X-O composite oxide nano precipitated phase dispersed and distributed in the molybdenum matrix. The molybdenum alloy comprises the following components in percentage by mass: 1%-2% of Y2O3, 0.3%-1.2% of an active element X, 96.5%-98.7% of molybdenum and inevitable impurities, wherein X is selected from one of Ti, Zr and Hf; the Y-X-O composite oxide nano precipitated phase and the molybdenum matrix form a coherent or semi-coherent interface, and the interface mismatch degree is less than or equal to 5%. The molybdenum alloy has excellent high-temperature strength and creep resistance, and can be applied to the high-temperature fields of nuclear industry, aerospace and the like.

The invention discloses a method for preparing a carbon monoxide oxidation catalyst by using red mud and tungsten-molybdenum smelting slag, which comprises the following steps of: uniformly stirring and mixing the red mud and the tungsten-molybdenum smelting slag at a high speed, mixing with inorganic strong acid, and performing ultrasonic-assisted stirring to obtain acid leaching slag; the acid leaching residues are subjected to low-temperature plasma activating treatment and then microwave activating treatment, and microwave activated plasma residues are obtained; weighing tricalcium phosphate and microwave activated plasma slag, and uniformly stirring to obtain phosphorus-calcium doped activated slag; weighing an ammonium sulfide solution and the phosphorus-calcium doped activated slag, uniformly stirring, transferring the obtained sulfur-phosphorus-calcium doped activated slag into a hydrothermal reaction kettle, carrying out hydrothermal reaction, carrying out compression molding on the obtained hydrothermal composite material, and carrying out pyrolysis carbonization treatment in an inert gas atmosphere to obtain the phosphorus-calcium doped activated slag. The obtained pyrolysis composite material is soaked with a silane coupling agent solution and then roasted again, and the carbon monoxide oxidation catalyst is obtained. The catalyst prepared by the invention can realize efficient oxidation photocatalysis of carbon monoxide under the conditions of normal temperature and normal pressure.

The invention belongs to the field of nickel-based alloy materials, and discloses a precipitation hardening type nickel-based alloy welding wire and a preparation method thereof.The precipitation hardening type nickel-based alloy welding wire comprises, by mass, 50%-60% of nickel, 15%-20% of chromium, 15%-20% of iron, 2%-4% of molybdenum, 2%-5% of niobium, 0.01%-2% of tantalum, 0.2%-2% of aluminum, 0.5%-1.2% of titanium, 0.03%-0.08% of carbon, 0.1%-0.5% of manganese, 0.1%-0.5% of silicon, 0.01%-0.05% of magnesium, 0.01%-0.05% of yttrium, 0.5%-2% of tungsten, 0.1%-0.6% of cobalt, 0.001%-0.02% of boron and the balance impurities; according to the precipitation hardening type nickel-based alloy welding wire and the preparation method thereof, through component optimization and process innovation, the nickel-based alloy welding wire with high-temperature strength, excellent hot crack resistance and welding toughness is provided.

The invention relates to the technical field of diamond growth, and provides a preparation method of a polycrystalline diamond wafer and the polycrystalline diamond wafer, the method comprises the following steps: providing a sample with a first surface and a second surface opposite to each other, and pre-growing a first polycrystalline diamond layer on the first surface of the sample; the sample is placed on a molybdenum sheet table in chemical vapor deposition equipment, the first polycrystalline diamond layer faces the molybdenum sheet table, a second polycrystalline diamond layer grows on the second face of the sample, the sample is formed, and the thickness of the second polycrystalline diamond layer is larger than that of the first polycrystalline diamond layer; and separating the second polycrystalline diamond layer from the sample to obtain the polycrystalline diamond sheet. According to the polycrystalline diamond wafer prepared by the method, the warping control and the thickness uniformity are remarkably improved, the yield of finished products is high, the processing efficiency is high, and the production cost is low.

The invention discloses a method for preparing an iron-nickel-molybdenum-based electrocatalyst through combination of electrodeposition and rapid Joule heat and application of the method. The method comprises the steps that S1, a porous nickel substrate is pretreated, and the pretreated porous nickel substrate is obtained; s2, obtaining a nickel salt solution, a molybdenum salt solution and a ferric salt solution; s3, obtaining a mixed solution; s4, putting the mixed solution serving as electrolyte into a dual-electrode electrolytic tank, carrying out electro-deposition treatment by taking the pretreated porous nickel substrate as a cathode and an inert electrode as an anode, and washing and drying to obtain a Fe-Ni-Mo-LDH precursor; and S5, carrying out Joule thermal pyrolysis treatment on the Fe-Ni-Mo-LDH precursor, so as to obtain the iron-nickel-molybdenum based electrocatalyst. The preparation method can effectively regulate and control the size structure of the catalyst, and is suitable for preparing iron-nickel-molybdenum-based electrocatalysts with different substrates and different sizes; and the electrocatalyst has the advantages of uniform and stable nanostructure and high loading capacity. Meanwhile, the preparation method is short in reaction time, high in heating efficiency, high in repeatability and suitable for industrial large-scale production.

The invention relates to the technical field of water electrolysis hydrogen production, in particular to a self-supporting hollow carbon membrane electrode and a preparation method and application thereof.The preparation method comprises the following steps that a self-supporting hollow carbon nanofiber membrane with metal M and metal M compound heterojunction is prepared through a coaxial electrostatic spinning technology; the self-supporting electrode with a high specific surface area and a rapid mass transfer channel is formed by regulating and controlling the flow rate of the spinning solution of the outer layer and the inner layer and a high-temperature carbonization process, the metal M is selected from one of iron, cobalt, nickel, manganese and molybdenum, and the metal M compound is one of oxide, hydroxide, carbide, nitride, phosphide and chalcogenide. Compared with the prior art, the self-supporting hollow carbon membrane electrode disclosed by the invention has good mechanical stability, good hydrophilic and hydrophobic properties and excellent HER and OER bifunctional catalytic activity, and can be used for efficiently and completely decomposing water.

Improved electrocatalysts for promoting a hydrogen evolution reaction (HER) or an oxygen evolution reaction (OER) from alkaline fresh water and seawater are disclosed. By incorporating metals, such as tungsten and rare earth elements, into the nickel molybdenum nitride framework, Ni1-xMoxN, the disclosed electrocatalysts demonstrate improved catalytic activity and stability compared to the original Ni&Ni0.2Mo0.8N catalysts, particularly under high-current alkaline conditions, in water electrolysis for hydrogen and oxygen production.

The invention discloses a nickel-based alloy composite plate and a preparation method thereof, and belongs to the technical field of nickel-based alloys, the nickel-based alloy composite plate comprises a stainless steel bottom plate and a nickel-based alloy plate, and the nickel-based alloy plate comprises, by weight, 52-58 parts of nickel powder, 17-21 parts of molybdenum powder, 8-12 parts of copper powder, 7-9 parts of boron powder, 2-3 parts of modified hafnium carbide powder, 4-7 parts of an alloy reinforcing agent and 2-3 parts of a fluxing agent. The modified hafnium carbide prepared from hafnium oxide and nano carbon powder successfully replaces metal hafnium with high cost in the traditional process; and meanwhile, the actual adding proportion of the modified hafnium carbide in the nickel-based alloy plate is greatly reduced, the cost of industrial mass production is doubly reduced from the two aspects of raw material selection and dosage control, and the economic requirement of large-scale production is better met.

This invention belongs to the field of catalyst technology, specifically relating to a selective reduction catalyst for the production of sulfur from sulfur dioxide and its application method. The selective reduction catalyst for sulfur production from sulfur dioxide contains 1-2 wt% cobalt (CoO), 4-10 wt% molybdenum (MoO3), and 2-4 wt% zinc (ZnO), with TiO2-Al2O3 as the support. This invention exhibits good wide-temperature reaction performance, heat resistance, and water vapor resistance; the single-pass yield of elemental sulfur is higher than 80%, and the reaction process has high efficiency, showing promising application prospects.

The invention discloses an injection molding high-density alloy steel sintering integrated preparation process, which comprises the steps of alloy raw material proportioning, feed preparation, injection molding, continuous thermal desorption sintering treatment and enhanced heat treatment, and comprises the following steps: selecting gas atomization pure iron powder subjected to vacuum reduction treatment, and matching with chromium, nickel, molybdenum, vanadium, carbon, silicon, manganese and iron powder multi-component alloy proportioning; a phenolic resin-polyformaldehyde composite binder is adopted, 0.5-1.5% of a lubricating additive is added, internal mixing parameters are controlled under the protection of inert gas according to the powder-to-rubber ratio of 72-77%: 23-28%, and the problem that the compatibility of a single binder and alloy powder is poor is solved; three-section gradient temperature control injection molding and a continuous atmosphere furnace sectional degreasing-sintering integrated process are combined, and strengthening heat treatment is matched, so that sufficient diffusion of elements and densification of a green body are realized, and defects are avoided. The technology effectively solves the technical problems that traditional raw materials are high in impurity content and insufficient in element diffusion, and therefore the alloy steel sintering preparation efficiency can be improved.

The invention discloses a self-template synthesized linear biochar-based bimetallic material as well as a preparation method and application thereof, and belongs to the technical field of carbon materials. The method comprises the following steps: pretreating ganoderma lucidum residues, and pyrolyzing in a nitrogen atmosphere to prepare charcoal; and mixing the prepared biochar with cobalt nitrate and sodium molybdate to prepare CoMoO4 nanoparticles with in-situ growth of the biochar, and then washing and drying to obtain the BC-coated CoMoO4 linear biochar-based bimetallic material. Heterojunctions formed by binding sites of cobalt-molybdenum bimetal and biochar in the material form more defect sites, the synergistic effect of the metal and the micro-nano fibrous biochar is exerted, the degradation rate in the application of catalytic degradation of bisphenol A can reach 98.18% or above, a multiple reaction mechanism with sulfate free radicals is jointly shown, and the photocatalytic degradation of bisphenol A is realized. And the method has higher adaptability and effectiveness for complex pollutants.

The invention discloses a copper-molybdenum alloy component and a manufacturing method thereof, and belongs to the technical field of alloy manufacturing. Mo powder is sequentially subjected to vacuum drying treatment, oxidation-reduction treatment and coating treatment, so that the Mo powder has good flowability and powder laying uniformity; under the preset 3D printing condition, the porous Mo framework which is stably formed and complex in structure can be obtained, the problems that an existing rolling composite method is complex in technological process, strict in technological requirement and the like are solved, and the method is suitable for manufacturing parts with small sizes or complex shapes; the porous Mo framework is subjected to vacuum thermocuring and Cu infiltration treatment, and the obtained copper-molybdenum alloy component is excellent in compactness, high-temperature stability, interface bonding strength, heat conduction, electrical conductivity and the like. The problems that a copper-molybdenum alloy obtained in the prior art is poor in wettability and low in density and uniformity, and the mass content of copper is lower than 30%, so that the heat conductivity, the electric conductivity, the air tightness and other performance are low are solved.

The invention belongs to the field of metal materials, and particularly relates to a niobium alloy material which mainly comprises the following elements in percentage by weight: 4%-8.5% of tantalum, 4%-8.5% of tungsten, 1%-3% of molybdenum, 0.8%-2.5% of zirconium, 0-0.2% of carbon and the balance of niobium. The invention further relates to a method for preparing the niobium alloy material. The compactness of the niobium alloy material and the tensile property at the room temperature and the high temperature are obviously improved.

The invention discloses a preparation method of niobium-tungsten alloy spherical powder and a 3D printing method of the niobium-tungsten alloy spherical powder, and belongs to the technical field of refractory metal material preparation.The preparation method comprises the steps that niobium, tungsten, molybdenum and zirconium refractory metal raw materials are smelted to obtain cast ingots with uniform components, and hydride powder is formed after hydrotreating and mechanical crushing; spherical powder is prepared by adopting a plasma spheroidizing technology, then dehydrogenation is performed for 1-3 hours at the temperature of 450-750 DEG C, magnesium powder is added, treatment is performed for 2-5 hours in an inert atmosphere at the temperature of 800-1100 DEG C, and finally the low-oxygen niobium-tungsten alloy spherical powder with the oxygen content lower than 120 ppm is obtained. Compared with a traditional process, the spheroidizing treatment is innovatively carried out before the dehydrogenation and oxygen reduction process, the deoxidation efficiency is improved through the relatively small specific surface area of spherical powder, and oxygen content control is achieved in combination with magnesium powder heat treatment. The problems of high oxygen content and low powder yield in a traditional process are solved, and material support is provided for high-performance niobium-tungsten alloy components in the fields of aerospace, nuclear power and the like.

The invention provides an organic-inorganic composite conditioner for improving a soil structure. Comprising the following raw materials in parts by mass: 100-150 parts of calcium, 20-50 parts of magnesium, 10-20 parts of polyglutamic acid, 0.5-2 parts of zinc, 2-4 parts of boron, 2-4 parts of iron, 100-150 parts of organic nitrogen, 150-200 parts of composite organic natural polypeptide amino acid, 50-70 parts of seaweed boron molybdenum, 50-80 parts of phosphorus calcium zinc liquid, 20-50 parts of seaweed calcium magnesium boron iron zinc and 100-120 parts of a plant nutrition preparation. The fertilizer is prepared from the following raw materials in parts by weight: 10-15 parts of high phosphorus and high potassium, 150-200 parts of organic waste compost, 50-80 parts of a synergist and 50-100 parts of a functional microbial agent. Through a unique chelation technology, polyglutamic acid and calcium and magnesium ions are fully fused to form an efficient medium trace element water-soluble fertilizer, calcium and magnesium are directly absorbed by a root system after flushing application, the calcium utilization rate is improved by 50% or above, and due to the fact that polyglutamic acid carries strong negative charges, fertilizer loss caused by rainwater leaching is effectively reduced, and the yield of the fertilizer is improved. And the water-retaining and fertilizer-retaining functions are more obvious when the fertilizer is used in sandy loam.

The invention relates to a nickel-molybdenum anode electrode based on a crack induced self-passivation mechanism and a preparation method of the nickel-molybdenum anode electrode. The method comprises the following steps that 1, a substrate is soaked in a solution A for 1-25 min and then taken out; 2, immersing the substrate treated in the step 1 into a solution B for 10 minutes to obtain a precursor; and 3, putting the precursor into a Joule ultrafast heating device, heating the precursor to 380-450 DEG C at a heating rate greater than or equal to 100 DEG C / min in an air or inert atmosphere, carrying out heat preservation for a certain time, and cooling to obtain the nickel-molybdenum anode electrode. According to the method, the foam nickel three-dimensional framework is free of structural damage through short-time chemical soaking, the original high porosity and interconnection network of the foam nickel three-dimensional framework are perfectly reserved, and the loss rate of the specific surface area is reduced. According to the prepared nickel-molybdenum anode electrode, by means of the self-passivation effect of the crack edge and the component storage function of the thick layer, the Mo dissolution rate is reduced by one order of magnitude, and thousand-hour-level stable operation under the low current density can be achieved.

The invention provides a high-wear-resistance and low-dilution gas shielded welding wire and a preparation method thereof, and belongs to the technical field of welding wire manufacturing. The welding wire consists of the following raw materials in parts by weight: 45-52 parts of iron; 18-22 parts by weight of an electrolytic nickel plate; 6-8 parts by weight of high-purity molybdenum powder; 4-6 parts by weight of nano tungsten powder; 3-4.5 parts by weight of a vanadium nitride alloy; 1.2 to 1.8 parts by weight of a niobium-iron alloy; 0.8-1.5 parts by weight of aluminum magnesium alloy powder; 0.3 to 0.6 part by weight of lanthanum cerium mixed rare earth; 0.15 to 0.25 part by weight of ferroboron alloy; 0.5 to 0.8 part by weight of metal silicon powder; 0.2 to 0.4 part by weight of a magnesium-calcium alloy; and 0.1-0.3 part by weight of titanium hydride powder. The hard framework is formed through gradient distribution of carbides such as molybdenum, tungsten and vanadium, the wear-resisting life is remarkably prolonged, melting mixing of base metal is reduced through the nickel-based alloy, the consistency of deposited metal components is ensured, free hydrogen is fixed through hydrogen trap phases such as titanium and niobium, and a moisture absorption path is blocked in combination with a surface passivation film.

The invention relates to the technical field of molybdenum powder preparation, and particularly provides a preparation method of high-purity superfine molybdenum powder, which comprises the following steps: carrying out vacuum roasting on production raw materials to obtain a MoO3 first product; carrying out low-temperature purification on the MoO3 first product, and removing volatile impurity elements to obtain a MoO3 second product; carrying out high-temperature sublimation on the MoO3 second product to obtain gas-phase MoO3; filtering on line, and separating from high-melting-point impurities to obtain a third MoO3 product; the MoO3 third product is instantaneously mixed with working gas blown oppositely under the action of inert carrier gas, and preparation of molybdenum powder from gas-phase MoO3 through hydrogen reduction is completed; and the molybdenum powder is condensed and collected under the action of a cooling medium. According to the method, the molybdenum powder is prepared by directly reducing gas-phase MoO3 through the working gas, the superfine molybdenum powder can be prepared, volatile impurities are removed at a low temperature, high-melting-point impurities are removed through online filtration, and the gas-phase MoO3 and the working gas can be instantly mixed and completely reduced through opposite transmission of the working gas and the inert carrier gas, so that the purity of the molybdenum powder is improved.

The invention discloses high-strength stainless steel for a wheel hub cover and a machining process of the high-strength stainless steel, and relates to the technical field of stainless steel machining. The specific processing technology comprises the following steps: weighing a stainless steel raw material, smelting under nitrogen pressurization, carrying out protective pouring to obtain a cast ingot, carrying out hot forging and hot rolling to obtain a hot-rolled plate, carrying out solution treatment and water quenching, sequentially carrying out multi-pass cold rolling and single-pass liquid nitrogen heat preservation cold rolling, annealing and aging treatment to obtain a stainless steel base material, and sequentially carrying out grinding, polishing, oil removal and acid activation to obtain the stainless steel plate. And then placing in an electroplating solution for electro-deposition of an alloy plating layer, cleaning after electro-deposition is finished, then carrying out laser cladding, finally carrying out heat treatment, and cutting a thin layer to obtain the high-strength stainless steel. Wherein cladding powder adopted for laser cladding comprises cobalt powder, chromium powder, nickel powder, aluminum powder, molybdenum powder, titanium powder, zirconium powder, nano carbon-nitrogen metal and tungsten carbide.

The invention belongs to the technical field of catalysts, and particularly relates to a selective reduction catalyst for preparing sulfur from sulfur dioxide and an application method of the selective reduction catalyst. The selective reduction catalyst for preparing sulfur from sulfur dioxide contains 1-2wt% of cobalt (in terms of CoO), 4-10wt% of molybdenum (in terms of MoO3) and 2-4wt% of zinc (in terms of ZnO), and a carrier is TiO2-Al2O3. The method has good wide-temperature reaction performance, heat resistance and water vapor resistance, the single-pass yield of elemental sulfur is higher than 80%, the efficiency of the reaction process is high, and the method has good application prospects.

The invention relates to the technical field of mineral processing, and particularly provides a combined reagent system for flotation and magnesium reduction of talc-containing copper-molybdenum ore and application of the combined reagent system. The combined reagent system comprises a flotation collecting agent (faint yellow to orange transparent liquid, 40%-50% of active ingredients and less than or equal to 3% of free alkali) with active ingredients in the formula 1 and a flotation depressing agent (light yellow powder, extracellular polysaccharide extract of xanthomonas, the weight-average molecular weight of 1000-1500000 Daltons and rich in hydroxyl, carboxyl and pyruvic acid groups) with a structural formula in the formula 2, and the flotation depressing agent comprises extracellular polysaccharide extract of xanthomonas, the weight-average molecular weight of xanthomonas and the weight-average molecular weight of xanthomonas and is rich in hydroxyl, carboxyl and pyruvic acid groups. Through the synergistic adsorption effect of the combined reagent, the flotation grade and the recovery rate of the copper sulfide molybdenum ore are remarkably improved under the condition that the pH is 8-11. The combined reagent system has the advantages of being high in flotation efficiency, high in selectivity, low in reagent cost, environmentally friendly, high in industrial applicability and the like.

The application provides a glass structure and an electronic device. The glass structure comprises a glass substrate and a first optical scratch-resistant layer, a second optical scratch-resistant layer and a first superhard layer which are sequentially stacked on one side of the glass substrate, the first optical scratch-resistant layer is formed by alternately stacking two layers of materials with different refractive indexes, the second optical scratch-resistant layer is formed by stacking three layers of materials with different refractive indexes, and the first superhard layer is a diamond-like layer doped with at least one element selected from silicon, aluminum, titanium, zirconium, molybdenum and nitrogen. The glass structure has good scratch resistance and optical properties which change little compared with the glass substrate, and can better meet the long-term use requirements of the electronic device shell.

A beneficiation method for improving a grade of a magnesium-containing copper sulfide ore concentrate includes: crushing and grinding an ore to a fineness degree allowing 55% to 65% of particles to pass through a 0.074 mm sieve, adding an adjusting agent lime, collecting agents butylxanthate and kerosene, and a foaming agent methyl isobutyl carbinol (MIBC) to obtain a copper-molybdenum-sulfur mixed concentrate; re-grinding the copper-molybdenum-sulfur mixed concentrate to a fineness degree allowing 75% to 82% of particles to pass through a 0.048 mm sieve, adding lime, a magnesium-containing silicate inhibitor, a collecting agent 1, and MIBC to obtain a copper-molybdenum mixed concentrate; and adding sodium sulfide, kerosene, and MIBC to the copper-molybdenum mixed concentrate to obtain a high-grade copper concentrate. The beneficiation method adopts mixed flotation of copper-molybdenum, regrinding for separating copper and molybdenum from sulfur, and magnesium removal from a copper concentrate to allow quality improvement for the copper concentrate.