54 results about "High aluminum" patented technology

The invention relates to a control method for improving EDT roller texturing efficiency and high-surface automobile aluminum plate oil storage amount. The control method comprises the steps that (1) a single-rack cold rolling mill is adopted; (2) carrying out roller surface treatment by adopting an electrode electric spark roller grinder, wherein the roughness Ra of a working roller before roughening is less than or equal to 0.4 mu m; the roughness Ra after EDT roughening is equal to 1.95 to 2.2 [mu] m; (3) a single-rack cold rolling mill is adopted for production, the rolling oil temperature is 35 + / -5 DEG C, and the rolling oil pressure is 6.0-9.0 bar; (4) an air cushion type continuous annealing line is adopted for cleaning and solid solution aging treatment; (5) carrying out surface appearance and pit size measurement on the prepared aluminum plate by adopting a 3D optical microscope; and (6) the manufactured aluminum plate is measured through a 3D non-contact optical contourgraph. By means of the method, the requirements for the surface roughness Ra and Rpc of the automobile sheet can be met, the downstream stamping cracking risk and the corrosion spot defect caused by the too large surface pit diameter are reduced, the better high-surface automobile sheet, the higher aluminum sheet surface oil storage amount and the lower friction coefficient can be obtained, and the EDT roller texturing working time can be saved.

The invention discloses a method for composite etching of an electroplating gold plating layer, which comprises the following steps of: manufacturing a photoetching pattern on the front surface of gallium arsenide epitaxy, then evaporating a metal contact layer, depositing a SiNx protective mask layer, performing Mesa mesa etching on the gallium arsenide epitaxy, exposing a high-aluminum layer on the side surface of an epitaxial material, and forming an aluminum oxide limiting layer by adopting a wet oxidation process; a second SiNx protective mask layer continues to be deposited, and the metal contact layer is exposed through dry etching; forming a seed gold layer by adopting magnetron sputtering TiW / Au metal, and forming a photoresist mask with a target electrode pattern on the seed gold layer; electroplating thick gold on the photoresist mask pattern; the photoresist mask layer is removed after completion; the method of combining dry etching and wet etching is adopted to remove the gold plating layer in the non-electroplating area, so that the lateral corrosion of the metal layer is obviously reduced, the high-precision and high-fidelity electrode pattern transfer is realized, the lateral corrosion of the metal layer is reduced, and the passivation protection effect of the device is improved.

The application provides an automatic titration analysis method for measuring the aluminum content in high aluminum alloy, which adopts direct reaction of fluoride with a test solution to realize one-step direct titration, and determines the aluminum content in the range of 2.00% to 100.00%, and comprises the following steps: sample decomposition; precipitation of interfering ions; calibration of sodium fluoride standard solution; calibration of automatic potentiometric titrator; and measurement of the sample to be tested. The application solves the problems of sample pretreatment and how to avoid the influence of interfering ions on the determination of aluminum content. The titration operation, reading and calculation are automatically completed by the instrument, effectively reducing human errors, and the application has the advantages of simple operation, accurate and rapid results, wide application range and the like.

The application discloses a kind of paper printing vacuum aluminum plating water-based coating liquid.The coating liquid includes low Tg / high hardness water-based acrylic emulsion and polycarbonate type and / or acrylic modified water-based polyurethane dispersion as film-forming material, with water-based auxiliary agent, film-forming auxiliary agent, wax emulsion, water and other substances.Low Tg / high hardness water-based acrylic emulsion is to use alkali-soluble acrylic ester solid resin selected under specific condition as reactive macromolecular rheological control emulsifier, and to use seed emulsion polymerization method to synthesize core-shell structure of styrene-acrylic emulsion.The coating liquid of the application has excellent rheological property, excellent sealing property and film-forming property, super-high aluminum plating gloss, wear resistance, excellent anti-sticking and anti-glare property, chemical resistance, resolubility, printing adaptability, environmental protection, and is suitable for various printing and coating methods, especially suitable for printing industry of tobacco and liquor with extremely strict requirements on printing speed, drying speed, wear resistance, anti-sticking and aluminum plating appearance.

The application provides a kind of six-roller aluminum cold rolling mill roughening work roll calibration method: including the following steps: step S1: roughening work roll change roll is finished;Step S2: system parameter initialization;Step S3: roll gap pretreatment;Step S4: low pressure pre-pressing;Step S5: roll gap continues to close: continue to roll gap to roll gap clearance reaches 1mm position, keep low pressure pre-pressing state;Step S6: warm roll;Step S7: gradually promote rolling force to press full load;Step S8: AGC roll gap automatic zero and system zero calibration clear zero;Step S9: calibration check;Step S10: calibration is completed, the application cancels the traditional independent warm roll process, and the roll surface preheating and indentation elimination are integrated into the calibration process, solve the roughness attenuation caused by long warm roll and the contradiction problem that short warm roll will cause horizontal line residue, calibration stage embeds 1 minute uniform speed roll, realizes slight preheating by using roll system friction heat generation, and avoids horizontal line by dynamic roll rotation.

The present application relates to a kind of red mud-based ferrite cement and its preparation method, belong to cement clinker technical field.The raw material includes the following weight parts of component: high calcium solid waste 50-60 parts, high silicon solid waste 15-25 parts, high aluminum solid waste 10-25 parts, bayer red mud 20-40 parts and high sulfur solid waste 0-10 parts.Preparation method includes the following steps: S1, after high calcium solid waste, high silicon solid waste, high aluminum solid waste and bayer red mud are mixed, after grinding, homogenization, sample preparation, calcination, cooling is made into red mud-based ferrite cement clinker;S2, red mud-based ferrite cement clinker and the remaining high calcium solid waste, high aluminum solid waste and high sulfur solid waste are mixed, and are ground together, obtain red mud-based ferrite cement.Can utilize the high alkalinity of bayer red mud to prepare ferrite cement, realizes the efficient solidification of red mud alkaline component, solves the technical problem that red mud product is easy to alkali, can be largely absorbed red mud.

The utility model relates to a kind of mechanism for preventing six-roller aluminum cold rolling mill to retreat derail from roll-changing car, including roll-changing car, workbench and the track being set on workbench, roll-changing car can move along track, the outer end of track is provided with anti-derailment mechanism, and the anti-derailment mechanism includes the arc-shaped blocking surface extending to side upper direction along the outer end of track.This device is simple in structure, reasonable in design, and by setting arc-shaped blocking surface on the outer end of track, to prevent roll-changing car from moving too far, avoid derailing.

This invention discloses a method and system for sorting aluminum waste, relating to the field of renewable resource recycling. The method includes: crushing to 5-10cm blocks; shredding to 1-3cm particles; flotation separation using bubbles to float aluminum alloys; magnetic separation to remove ferromagnetic impurities; optical separation based on color identification to separate non-ferrous metals such as copper and zinc; gravity separation using a shaking table to separate heavy impurities; and refining to remove the surface oxide layer. For waste from thermal power plants, fly ash is removed before crushing by screening with an 80-120 mesh screen. This invention also discloses a system for executing this method, comprising a crusher, shredder, flotation machine, magnetic separator, color sorter, shaking table, and polishing machine connected in sequence, and equipped with a closed-loop control unit. This invention, through a seven-stage collaborative sorting process and intelligent feedback adjustment, significantly improves the sorting accuracy and product purity of aluminum waste, and is particularly suitable for aluminum-containing waste from thermal power plants with complex compositions, achieving a high aluminum alloy recovery rate.

A cement clinker composition incorporates calcium fluoride and iron oxide to reduce firing temperatures and increase strength. High fly ash, aluminum dross, aluminum scrap, high aluminum clays and combinations thereof may also be substituted for bauxite in the cement clinker composition.

The invention belongs to the field of composite materials, and discloses a high-airtightness nano injection molding polyethylene glycol terephthalate composite material and application thereof. The composite material comprises the following components in percentage by weight: 22-83% of PCR PET (Polymerase Chain Reaction Polyethylene Terephthalate); 3%-7% of PBT; 1%-3% of cyclic PBT; 2%-8% of polyarylsulfone; 1%-8% of a reactive flexibilizer; 0-1% of an antioxidant; 0-1% of a release agent; 10%-50% of glass fiber; the composite material can realize high PCR content, has high air tightness and high aluminum-plastic binding force, and is smooth in demolding and stable in process. The problem that an existing PET nano injection molding material is insufficient in air tightness is solved.

The present application relates to a kind of methods for removing aluminum from iron-containing aluminum feed liquid, and the present application relates to the field of hydrometallurgy, the method comprises: using saponifier saponification extractant, the saponifier is alkaline solution;Using saponified extractant to remove aluminum from the iron-containing aluminum feed liquid, control extraction equilibrium pH value is 0.5-3, obtain the raffinate removed aluminum and the aluminum extractant loaded;Aluminum-loaded extractant is sequentially washed and stripped, to obtain the extractant after stripping.The method of the present application has high aluminum extraction efficiency, so that iron and impurities such as aluminum are well separated.

The invention relates to a Beijing brick ceramic preparation method, which comprises: preparing a green body, weighing 25-35% by weight of kaolin, 35-40% by weight of potassium-sodium feldspar, 3-5% by weight of a high aluminum material, 5-6% by weight of anorthite and 1% by weight of a grinding aid additive, mixing, and ball-milling until the particle size D50 of the powder is less than or equal to 10 [mu] m to prepare a slurry; removing iron from the slurry through a 120-mesh sieve, and performing spray drying to obtain green body dry powder with the water content of 8-10%; surface effect treatment: bidirectionally pressurizing the green body dry powder by using a hydraulic press; and polishing, wherein a diamond grinding block and a fiber grinding block are combined for polishing. On the basis of wear resistance, skid resistance and light sensation optimization, the water-repellent anti-fouling polished tile synchronously has high mechanical strength and water-repellent anti-fouling property, can break through the application limitation of traditional polished tiles, is suitable for scenes such as historic building repair and cultural relic protection which have high requirements on cultural restoration, and also has good water-repellent anti-fouling performance. And the method can also be used for scenes with requirements on performance and texture, such as corridors, kindergarten activity rooms, high-end villa whole houses and the like.

The invention provides a method for improving quality of bauxite and efficiently enriching lithium, which comprises the following steps of: grinding and grading lithium-containing bauxite to obtain coarse-grained minerals and fine-grained minerals; the coarse-fraction minerals are subjected to reselection, reselected concentrates and reselected tailings are obtained, the reselected tailings and the fine-fraction minerals are combined for flotation operation, and flotation concentrates and flotation tailings are obtained; the flotation tailings are lithium-rich products, and the flotation concentrate and the gravity concentrate are combined into aluminum concentrate. According to the method, the quality of the bauxite concentrate is improved, the flotation amount and the consumption of the collecting agent can be reduced by 30% or above, meanwhile, efficient enrichment of lithium and the high aluminum-silicon ratio are achieved, and the aluminum-silicon ratio is about 10.

The invention discloses high-alumina glass with high transmittance, low viscosity and excellent devitrification resistance and a preparation method of the high-alumina glass, and relates to the technical field of glass. Through multi-component collaborative design, the material formula is reconstructed and optimized, so that the finally produced high-aluminum glass effectively inhibits the crystallization tendency and reduces the melting temperature on the premise of high aluminum content, the mechanical properties, chemical resistance, ion exchange performance and high transmittance of the glass are synchronously improved, and the high-end application requirements of the market are met.

The application relates to a gibbsite-type bauxite processing method and belongs to the technical field of mineral processing, which comprises the following steps: crushing and grading gibbsite-type bauxite to obtain coarse-grained material and fine-grained material; removing impurities from the coarse-grained material by gravity separation to obtain gravity separation concentrate and gravity separation tailings; removing impurities from the fine-grained material by centrifugal mineral separation to obtain centrifugal concentrate and centrifugal tailings; wherein the separation density of the gravity separation is 1.7-3.0 g / cm 3 ; the separation density of the centrifugal mineral separation is 1.7-3.2 g / cm 3 ; the aluminum concentrate with high alumina content, high aluminum-silicon ratio and relatively low impurity content is obtained, the tailings with high silicon dioxide content, iron content and titanium content are obtained, the method has the characteristics of short mineral separation process, low mineral separation cost, low investment, high mineral separation efficiency, the concentrate is suitable for producing alumina by the Bayer method, and the tailings are applied to the building material industry.

SUMMARY OF THE DESCRIPTION This document describes compositions and formulations of lime-based cement extenders or cement substitutes, as well as associated systems and methods. In some embodiments, a lime-based cement extender or cement substitute composition includes at least 5 wt% lime particles and at least 50 wt% pozzolan particles. In some embodiments, the pozzolan particles include silicon dioxide and aluminum oxide. In some embodiments, the composition may be combined with additives and / or aggregates to produce a formulation. The formulation may have at least 5,000 ppm of soluble sulfate and an alumina:silica ratio of at least 0.2:1.Methods to accelerate the formation of calcium and aluminum sulfates to prevent sulfate attack during critical periods include producing a formulation with a high aluminum oxide content, using additives designed to accelerate certain chemical reactions, and omitting limestone. Methods to delay the formation of calcium and aluminum sulfates to prevent sulfate attack during critical periods include producing a formulation with additives designed to delay certain chemical reactions.

The present disclosure belongs to the field of lithium ore metallurgy. The present disclosure provides a method for extracting lithium and aluminum from red mud and lithium pegmatite, which comprises mixing lithium pegmatite with red mud for primary roasting, soaking the mixture in water to obtain a soaked material, and then performing secondary roasting, followed by primary leaching of the secondary roasting, and then obtaining a qualified lithium liquid product after impurity removal of the leaching solution, and obtaining an aluminum solution with high aluminum content after secondary leaching of the leaching residue, thereby realizing simultaneous extraction of lithium and aluminum and effectively separating the two. The method uses red mud, which is also an industrial solid waste, as a raw material to extract lithium directly from lithium pegmatite ore raw materials. The process is simple and reliable, the production cost is low, the lithium recovery rate is high and can reach more than 98.7%, it is conducive to large-scale industrialization, and it makes full use of industrial solid waste, which is more green and environmentally friendly, and has considerable economic benefits.

The process for producing crack-resistant, high-aluminum dispersion-strengthened copper electrode materials involves the following steps: high-aluminum dispersion copper powder production, oxygen source production, powder mixing, cold isostatic pressing, integrated heat treatment (internal oxidation, reduction, sintering), oxygen-free copper coating, hot extrusion, drawing, and finishing. By coating the dispersion copper-high-aluminum powder ingot with oxygen-free copper, the surface condition of the high-aluminum dispersion copper rod is improved, resulting in low processing plasticity and preventing cracking during cold working and use. This solves the high cost of high-aluminum dispersion copper electrode materials produced by conventional pure nitrogen atomization and the high cracking rate of high-aluminum dispersion copper electrode materials produced by pure water atomization. This reduces the cracking rate during cold working and use of the high-aluminum dispersion copper electrode materials, thereby reducing production costs.

The invention belongs to the technical field of microcrystalline glass materials, and provides high-hardness and high-transparency spinel microcrystalline glass with high aluminum content, which is prepared from the following glass raw materials in percentage by mole: 41 to 55 percent of SiO2, 24 to 29 percent of Al2O3, 8 to 16 percent of ZnO, 3 to 8 percent of Li2O, 3 to 8 percent of Na2O, 3 to 6 percent of ZrO2 and 2 to 5 percent of P2O5. According to the high-aluminum-content, high-hardness and high-transparency spinel glass ceramic and the preparation method thereof disclosed by the invention, the components and the contents of the components are reasonably designed, so that the obtained glass ceramic meets the requirement of high transparency while ensuring relatively high microhardness; the average transmittance of the spinel microcrystalline glass with the thickness of 1mm in visible light is greater than or equal to 80%, and the microhardness is greater than or equal to 8Gpa.

The invention belongs to the technical field of photoelectrons, and particularly discloses a semiconductor laser device and a preparation method thereof. The device sequentially comprises a substrate, a buffer layer, a transition layer, a limiting layer, a waveguide layer, a quantum well, a waveguide layer, an electron blocking layer, a limiting layer, a transition layer and a cap layer in the epitaxial growth direction. The aluminum component of the transition layer is distributed in a gradually changing mode in the thickness direction, a strain matching structure is formed between the waveguide layer and the quantum well, and the electron blocking layer is made of a high-aluminum component material so as to adjust conduction band steps. According to the device structure and the preparation method, optical constraint, interface stability and carrier limiting capability can be considered, and the device structure and the preparation method are suitable for semiconductor laser application with relatively high working temperature.

The invention discloses a method for synthesizing superfine flaky alpha-Al2O3 powder at low temperature, which comprises the following steps: by taking a metal aluminum simple substance as an aluminum source, an inorganic acid as a solvent and urea as a precipitator, adding no additive, template or seed crystal, firstly adding the metal aluminum simple substance into the inorganic acid, regulating the pH value to 7 by using ammonia water, then adding ammonium sulfate and urea, fully mixing, and then adding a catalyst to prepare the superfine flaky alpha-Al2O3 powder. Adding molten salt, and fully stirring to prepare a mixed solution; filling the mixed solution into a reaction kettle, and carrying out hydrothermal reaction at a certain temperature to obtain a precipitate; drying the precipitate to obtain an aluminum oxide precursor; and calcining at the temperature of 560-800 DEG C, washing and drying to obtain the high-purity flaky alpha-Al2O3 powder with the particle size of 100-500nm. The preparation method provided by the invention is low in synthesis temperature, simple in process, easily available in required materials, high in aluminum oxide purity and wide in application prospect.

1. Name of the designed product: packaging box (360° high-aluminum peep-proof film). 2. Use of the designed product: for packaging mobile phone film. 3. Design points of the designed product: combination of shape and pattern. 4. Picture or photo best indicating the design points: perspective view.

The application discloses a preparation method of a vertical cavity surface emitting laser, wherein the vertical cavity surface emitting laser takes (100) crystal surface GaAs as a substrate material; the preparation method comprises the following steps: a wet oxidation step, which is used for taking the outer ring area of one or more high aluminum layers in a DBR as a target oxidation area, oxidizing the target oxidation area into aluminum oxide, and forming an unoxidized oxidation hole in the middle area of the one or more high aluminum layers; the preparation method further comprises an ion implantation step before the wet oxidation step, which is used for forming a defect area with ion implantation damage in part of the target oxidation area by means of ion implantation, and making the oxidation hole generated by the wet oxidation step into a non-circular oxidation hole based on the wet oxidation rate difference between the defect area and other areas in the target oxidation area. The application further discloses a vertical cavity surface emitting laser. The application can greatly reduce the production cost and chip cutting difficulty while ensuring the performance of the VCSEL laser.

The invention discloses a method for determining aluminum in ferro-aluminum through ICP-AES, a main selection internal standard element scandium (Sc) and an alternative internal standard element yttrium (Y) are introduced to construct a double-internal-standard correction system, the problem of matrix effect under high aluminum content is solved, accurate detection in the content range of 10.00%-60.00% is realized, the requirements for rapid quality control of steelmaking production and high-precision production of high-end steel are met, and the method is suitable for industrial production. And the application scene and the flexibility of the method are expanded. The invention aims to provide a method for determining aluminum in ferro-aluminum by ICP-AES, which is simple and convenient to operate, rapid in detection, high in accuracy, strong in anti-interference capability and free of special requirements on instruments.

The application discloses a method for measuring tin content in polymetallic ore by alkali-salt acid-hydrofluoric acid acidification complexing, and belongs to the technical field of ore analysis and testing. The method is aimed at the problems of interference in tin determination and low recovery rate caused by high phosphorus, high aluminum, high silicon and complex matrix containing niobium and tantalum in the existing sulfuric acid system. The method adopts sodium peroxide to melt and decompose the sample, adds hydrochloric acid-hydrofluoric acid mixed acid for acidification complexing after hot water extraction, converts silicon, aluminum, niobium and tantalum into soluble fluorine complex, effectively inhibits the formation of colloids and the adsorption loss of tin, and then combines with inductively coupled plasma emission spectrometry to determine the characteristic spectrum of tin. The method has a standard addition recovery rate of 101-105%, and the comparison result is accurate and reliable compared with the potassium iodate titration method. The method is simple, efficient, effectively eliminates the interference of complex matrix, and is suitable for accurate determination of tin in high-phosphorus, high-aluminum and complex ore samples containing niobium and tantalum such as lithiophilite.

The application discloses a welding process of high-manganese high-aluminum steel welded joints, and belongs to the technical field of welding processes.The welding process of high-manganese high-aluminum steel welded joints comprises the following steps: a groove processing step, a fixing tool step, a primer layer welding step, a preliminary welding step of front filling welds, a subsequent welding step of front filling welds, a preliminary welding step of back filling welds, and a subsequent welding step of back filling welds.The welding process of high-manganese high-aluminum steel welded joints effectively solves the problems of high cost and strict welding process of high-manganese steel welding in the prior art.

The application discloses a method for synthesizing superfine flaky alpha-Al2O3 powder at low temperature, which uses aluminum as an aluminum source, inorganic acid as a solvent and urea as a precipitant, and does not add any additive, template and crystal seed. First, the aluminum is added into the inorganic acid, ammonia water is used to adjust the PH value to 7, then ammonium sulfate and urea are added and fully mixed, and then molten salt is added and fully stirred to form a mixed solution; then the mixed solution is loaded into a reaction kettle to perform hydrothermal reaction at a certain temperature to obtain a precipitate. The precipitate is dried to obtain an aluminum oxide precursor; after being calcined at 560-800 DEG C, the aluminum oxide precursor is washed and dried to obtain high-purity flaky alpha-Al2O3 powder with a particle size of 100-500 nm. The preparation method has the advantages of low synthesis temperature, simple process, easily-obtained materials, high aluminum oxide purity and wide application prospect.

The application relates to a kind of four-roll aluminum cold rolling mill laser texturing work roll rolling surface roughness control method, it is characterized in that: step S1: before production, different specifications aluminum strip and aluminum strip roller are rolled, and roughness mapping relationship model of rolling force-time is established;Step S2: the rolling reduction of aluminum strip is simulated and optimized using finite element, and dynamic adjustment is carried out in combination with real-time thickness monitoring;Step S3: according to the shape change of aluminum strip and the adjustment of bending force of associated database;Stable tension is maintained through tension sensor;Material and equipment performance are combined to optimize rolling speed;Step S4: through the real-time monitoring of each parameter and the collaborative control model, ensure that the surface roughness of aluminum strip meets the predetermined requirements.The present application ensures that the surface roughness of the produced strip meets the predetermined requirements by optimizing and adjusting the key parameters such as calibration rolling force, calibration time, reduction, bending, tension and rolling speed in the production process.

The present application relates to the technical field of alloy coating, and particularly relates to a Co composite modified PtAl diffusion layer suitable for nickel-based high-temperature alloy and a preparation method thereof. The preparation method provided by the present application comprises the following steps: after plating platinum on the surface of the nickel-based high-temperature alloy, vacuum heat treatment is performed to obtain the nickel-based high-temperature alloy with a surface comprising a Ni-Pt interdiffusion layer; a cobalt-aluminum co-diffusion treatment is performed on the nickel-based high-temperature alloy with the surface comprising the Ni-Pt interdiffusion layer by using a chemical vapor deposition method to obtain the Co composite modified PtAl diffusion layer; the cobalt source used in the chemical vapor deposition is a mixture of ammonium iodide and cobalt particles, and the reaction gas of the cobalt source is hydrogen iodide; the aluminum source used in the chemical vapor deposition is aluminum particles, and the reaction gas of the aluminum source is hydrogen chloride. The preparation method solves the problem of low cobalt diffusion efficiency caused by excessively high aluminum diffusion temperature by adjusting the composition of the cobalt source.