23 results about "Aluminum high" patented technology

The invention provides a ceramic green body based on lithium slag and wollastonite, a ceramic tile and a preparation method, and the ceramic green body comprises the following raw materials by weight: 25-35% of clay, 15-25% of lithium slag, 10-20% of wollastonite tailings, 15-25% of potassium-sodium feldspar, 15-25% of quartz, 0-3% of calcium phosphate, and 0.5-0.8% of a dispergator. The lithium slag and the wollastonite tailings are doped into the formula of the ceramic body, a low-aluminum high-calcium billet system is established by combining the clay, the potassium-sodium feldspar, the quartz and the auxiliary raw materials, and the characteristics of the lithium slag and the wollastonite are utilized, and the formula of the ceramic body is adjusted and optimized, so that the low-aluminum high-calcium ceramic body is obtained. The low-aluminum high-calcium green body formula which is low in firing temperature, wide in firing range and easy to control kiln firing can be obtained, energy consumption is remarkably reduced, the utilization rate of the lithium slag and the wollastonite tailings is increased, the production cost of ceramic tiles is reduced, and meanwhile the strength of ceramic products is improved.

The invention discloses a smelting method of low-aluminum high-titanium welding wire steel. The smelting method comprises a converter smelting stage, an LF refining stage and a continuous casting stage. In the converter smelting stage, the converter smelting end point molten steel temperature, the P content, the C content and the [O] content are controlled, then converter turning-down tapping is carried out, and alloying is carried out in the tapping process; in the LF refining stage, lime and fluorite are added into a steel ladle for slagging, calcium carbide is adopted for deoxidation, and the target alkalinity, the content of dissolved [O] in steel and the temperature of molten steel are controlled; titanium wires are fed multiple times in stages according to different titanium targets, when the titanium wires are fed every time, the temperature of molten steel is correspondingly increased, and dissolved [O] in calcium carbide deoxidation control steel is correspondingly reduced. According to the scheme, generation of titanium inclusions in the smelting process can be reduced, the production stability of the low-aluminum high-titanium welding wire steel is improved, and the production cost is reduced.

According to the smelting process, EBT electric arc furnace smelting, LF furnace refining, VD vacuum treatment and continuous casting are adopted, the end point C of an electric arc furnace ranges from 0.08% to 0.25%, and the end point temperature is controlled to range from 1630 DEG C to 1660 DEG C; 5-7 kg / t steel lime and 1.0-2.0 kg / t steel calcium carbide are added into an LF furnace for deoxidation, a staged sulfur adding technology is adopted, the alkalinity of refining slag is controlled to be 2-4, reducing white slag is not produced for desulfurization, the temperature is increased to 1655-1685 DEG C in a submerged arc mode, VOD / VD is converted for vacuum treatment, a vacuum refining technology is adopted in VD, the vacuum degree is smaller than or equal to 67 Pa, the holding time is longer than or equal to 20 min, sulfur line feeding is not conducted after VD, and calcium treatment is not conducted; and when the soft blowing time is greater than or equal to 12 minutes, a continuous casting station is turned, the superheat degree of a continuous casting tundish is controlled to be 20-50 DEG C, and the constant pulling speed is 0.20 + / -0.2 m / The technology is suitable for producing the low-silicon low-aluminum high-sulfur steel through the electric furnace in a short process.

The invention discloses an aluminum silicate fiber reinforced coke oven regenerative chamber sealing wall, which belongs to the technical field of coke oven bodies, and specifically comprises the following steps: building magnesium-aluminum high-strength heat-insulating bricks in a staggered joint manner as an inner layer, reserving expansion joints, sequentially paving an aluminum silicate fiber blanket on an outer layer, mounting and fixing an asbestos-free calcium silicate plate, and painting a heat-insulating coating to form a coating, finally, a steel wire mesh is laid and fixed, and the coke oven regenerative chamber sealing wall is obtained. According to the invention, the aluminum silicate fiber blanket is enhanced, and the magnesium-aluminum high-strength heat-insulating brick and the heat-insulating coating are prepared, so that the heat-insulating property, the sealing property and the thermal expansion property of the sealing wall of the regenerative chamber of the coke oven are further optimized.

The invention belongs to the field of ceramic building materials, and relates to comprehensive protection matte glaze, a comprehensive protection matte ceramic tile and a preparation method of the comprehensive protection matte glaze. The comprehensive protection matte glaze comprises the following chemical components in percentage by mass: 10%-15% of potassium feldspar, 5%-10% of kaolin, 1%-3% of zirconium silicate, 10%-17% of wollastonite, 20%-40% of high-aluminum high-calcium frit, 4%-6% of calcined zinc oxide, 10%-17% of magnesium aluminate spinel, 5%-10% of calcined talc and 10%-20% of quartz. The high-aluminum high-calcium frit comprises the following chemical components in percentage by mass: 50%-53% of SiO2, 20%-25% of Al2O3, 0.1%-0.4% of Fe2O3, 14%-18% of CaO, 1%-3% of MgO, 3%-5% of K2O and 1%-2% of Na2O. According to the comprehensive protection matte glaze designed by the invention, the magnesium aluminate spinel and the zirconium silicate are introduced, and the formula composition is specifically controlled, so that a comprehensive protection matte ceramic tile which is excellent in wear resistance, chemical corrosion resistance, pollution resistance durability, skid resistance, tile surface flatness and the like is obtained.

The invention discloses a waste aluminum regeneration calendering-in-situ alloying short-process technology, and relates to the field of advanced nonferrous metal material preparation and resource recycling. The method comprises the following steps: after crushing and pretreating the waste aluminum, mixing the waste aluminum with Cu / Zn / Mg alloy powder, and carrying out cold press molding to obtain a precast block; carrying out hot extrusion by adopting a conventional hot extrusion machine, and synchronously breaking the film and alloying; continuously rolling and densifying an interface; and carrying out online T6 heat treatment to obtain the high-performance aluminum alloy. According to the method, special equipment and a smelting process are replaced by conventional hot extrusion and continuous calendering, the technical prejudice is broken through, special equipment does not need to be additionally arranged, the single-batch treatment capacity is 1.5 tons, and the production period is 2.2-2.5 hours. The oxygen content of the product is smaller than or equal to 0.1 at.%, the yield strength is larger than or equal to 262 MPa, the tensile strength is larger than or equal to 438 MPa, high-end regeneration of waste aluminum is achieved, the method is suitable for scenes such as automobile light weight, and economic and environment-friendly values are achieved.

The application provides a high-aluminum high-gadolinium low-indium sintered neodymium-iron-boron permanent magnet and a preparation method thereof, and belongs to the technical field of permanent magnets.The main alloy raw material and the auxiliary alloy raw material with specific compositions are separately subjected to rapid solidification casting to obtain main alloy castings and auxiliary alloy castings; the main alloy castings and the auxiliary alloy castings with specific proportions are subjected to double-alloy hydrogen crushing to obtain coarse powder; the coarse powder is mixed with an antioxidant and subjected to airflow milling to obtain fine powder; the fine powder is mixed with a lubricant and sequentially subjected to orientation forming, sintering and tempering to obtain the high-aluminum high-gadolinium low-indium sintered neodymium-iron-boron permanent magnet.In the application, the Al and Gd element contents in the sintered neodymium-iron-boron permanent magnet are high, and the low-melting-point In element is added in the form of an alloy to improve the grain boundary distribution of the magnet; without adding Dy and Tb heavy rare earth elements, the sintered neodymium-iron-boron permanent magnet with a magnetic property of 12kGs remanence and a coercive force of 23kOe can be obtained, and the production cost is saved.

This invention relates to the field of phosphate rock beneficiation technology. It discloses a composite beneficiation method for removing iron, aluminum, silicon, and magnesium impurities from phosphate rock, comprising the following steps: S1, crushing and grinding phosphate rock to remove magnesium; S2, adding water to the demagnesified phosphate concentrate at a concentration controlled at 15-20%, and classifying it using a hydrocyclone to obtain coarse and fine products; S3, subjecting the coarse product to aeration reverse flotation for desiliconization; S4, concentrating the fine product and then subjecting it to aeration flotation for desiliconization, iron removal, and aluminum removal; S5, merging high-quality phosphate concentrate one and high-quality phosphate concentrate two to obtain a low-silicon, low-magnesium, low-iron, and low-aluminum high-quality phosphate concentrate; S6, merging the tailings as total tailings. This invention effectively solves the problem of high magnesium, silicon, iron, and aluminum impurity content in phosphate rock due to depletion, which is difficult to effectively remove. It is an easy-to-operate and easily industrialized composite beneficiation process for efficient phosphate rock impurity removal.

The invention discloses a method for preparing low-aluminum high-grade iron ore concentrate for iron phosphate production by using pyrite cinder, and belongs to the field of high-value utilization of solid waste resources and preparation of new energy materials. The method sequentially comprises the steps of screening, pre-magnetic separation, ore grinding, two-stage acid leaching, low-intensity magnetic separation and reverse flotation; according to the method, a two-stage acid leaching process is adopted, and deep chemical dissolution of aluminum impurities which are difficult to remove by a traditional physical method is realized through the synergistic complexing effect of inorganic acid and organic acid and assisted by a leaching aid; by combining magnetic separation pre-enrichment and mixed amine cation reverse flotation accurate separation, the pyrite cinder is converted into low-aluminum high-grade iron ore concentrate with the total iron grade larger than or equal to 69% and the aluminum grade smaller than or equal to 0.10%, the iron recovery rate is high, the harsh requirement of an iron phosphate precursor for an iron source is met, and an efficient solution is provided for high-value utilization of bulk solid waste.

The present application relates to bauxite dressing tailings resource utilization field, specifically relates to a kind of low-aluminum high-sulfur high-carbon tailings resource comprehensive utilization method.The useful and useless components in tailings are treated by targeted separation in the present application, and the bauxite concentrate and high-grade sulfur concentrate obtained can be realized industrial consumption.The present application realizes the resource comprehensive utilization of low-aluminum high-sulfur high-carbon dressing tailings, and can also solve the problems of resources and environmental pollution, and has great popularization and application value.

The invention relates to a processing and manufacturing method of an aluminum high-efficiency heat exchange tube suitable for a steam-water or flue gas and water heat exchange system. Most traditional heat exchange tubes are carbon steel or stainless steel finned tubes, the heat exchange coefficient of the traditional heat exchange tubes is low, and the current requirements for energy conservation and consumption reduction are difficult to meet. The heat transfer coefficient of the heat exchange tube obtained through the method is high, and meanwhile the tube body is endowed with the anti-corrosion performance. The two ends of the aluminum profile pipe are fixed between a chuck and a tailstock of a machine tool, so that a cutter is slowly pushed in the rotating direction of the aluminum profile pipe, transverse fins which are spirally distributed are machined on the surface of a pipe body, grooves with intervals are cut in the peripheries of the transverse fins, the machined aluminum pipe is fed into an anodic oxidation tank, and the aluminum profile pipe is subjected to anodic oxidation. And an oxidation film is formed on the surface of the tube body through a sulfuric acid anodic oxidation process, hole sealing treatment is conducted after oxidation is completed, holes of the oxidation film are sealed, the corrosion resistance of the tube body is improved, and finally the anti-corrosion aluminum efficient heat exchange tube is obtained.

The invention relates to a production method of a high-chromium high-aluminum high-titanium-iron-nickel base alloy billet, which adopts a short flow process of electric furnace-AOD furnace-VOD furnace-LF refining furnace-continuous casting for smelting, and specifically comprises the following steps: continuous casting adopts vertical bending type casting, and specifically comprises the following steps: starting casting when the temperature of a rotary table steel ladle is lower than 1450 DEG C, controlling the superheat degree to be less than or equal to 35 DEG C, performing argon sealing on a continuous casting long steel nozzle, and performing continuous casting on the continuous casting long steel nozzle; argon is injected before tundish casting is started to well protect casting, the casting speed is 0.8-1.0 mm / s, EMS is started, and the electromagnetic stirring current is 600-1200 A; the wide surface of the cold mold water of the crystallizer I is 2900-3100L / min, and the narrow surface of the cold mold water of the crystallizer I is 320-360L / min; weak cooling is adopted for secondary cooling mold water, the steel billet is placed in a window to be rapidly air-cooled after being produced, and finally a continuous casting sheet billet is obtained. The molten steel is high in purity, nodulation and blockage are avoided during casting, and a casting blank is free of surface cracks.

The utility model is applicable to the related technical field of transformers, and provides a copper-clad aluminum high-current output planar transformer, which comprises a magnetic core and a base embedded in the magnetic core, a coil and a PCB (printed circuit board) are further arranged in the magnetic core, and an output piece connected with the PCB is arranged on the base. The total cost of the product is 40% lower than that of a copper pin; the bottom is suspended, and the coil is directly contacted with the air to easily dissipate heat; the secondary output end adopts two rows of copper-clad aluminum pins to realize shunting, so that eddy-current loss can be effectively reduced; used materials are simple, assembly is convenient, and large product performance fluctuation caused by inconsistent materials and manual operation can be reduced to a great extent; the coil and the PCB are alternately combined for four times, so that coupling between the primary and the secondary is enhanced, and the working efficiency of a product is improved; and the output end adopts two rows of copper-clad aluminum pins, the inner row is a straight pin, the outer row is a bent pin, and large-current output is realized by adopting shunt connection.

The steel ladle comprises a steel ladle body with an inner cavity, a U-shaped hanging bracket used for hanging is arranged on the steel ladle body in a rotating mode, a water opening penetrating through the steel ladle body is formed in the bottom of the inner cavity, a blocking column is arranged in the inner cavity, and the blocking column is connected with the outer side wall of the steel ladle body in a sliding mode through a connecting piece. The top of the steel ladle is rotationally provided with two U-shaped limiting frames which turn over vertically, and when the hanging bracket is in a vertical state, the limiting frames turn over, so that the hanging bracket is located in openings of the limiting frames and limited; a lever type pulling structure is further arranged on the side wall of the steel ladle, the output end of the lever type pulling structure is connected with the connecting piece, a pull rope is arranged at the input end of the lever type pulling structure, and the other end of the pull rope is connected with the hanging bracket, so that when the hanging bracket is in a vertical state, the input end of the lever type pulling structure is tensioned upwards to lock the connecting piece and the blocking column.

The invention discloses a method for comprehensively utilizing low-aluminum and high-silicon resources, and belongs to the technical field of light metal metallurgy. The method comprises the following steps: decomposing low-aluminum high-silicon mineral powder by using concentrated acid (hydrochloric acid or sulfuric acid) at high temperature and high pressure to obtain a soluble salt mixture solution and insoluble substances such as silicon oxide, titanium oxide and undissolved aluminum oxide; and crystallizing and separating out salt crystals with the concentration reaching a saturated state by using a crystallization method. After the formed co-crystallized composite salt is re-dissolved, carbonate, hydroxide or oxide of alkali metal (sodium and potassium) and alkaline earth metal (calcium and magnesium) are used as a neutralization reaction precipitator, and precipitation, separation and purification are carried out respectively. And mixing the dissolved slag with carbon, performing high-temperature smelting reduction to generate silicon and silicon alloy, taking the smelting slag as a raw material for aluminum electrolysis, and generating aluminum and aluminum alloy through an aluminum electrolysis process.

The aluminum high top cover comprises a neck structure and a can opening structure arranged on the upper portion of the neck structure, the neck structure and the can opening structure are hollow and communicate with each other, the can opening structure is in a circular ring shape, threads are arranged on the outer circumferential face of the can opening structure, the top of the can opening structure is sealed through a spiral cover, and the top of the can opening structure is connected with an upper flanging structure. The lower end of the neck structure is connected with an annular limiting plate, and the outer ring of the annular limiting plate is connected with a lower flanging structure. During use, a mouth is firstly in contact with the upper flanging structure, compared with the prior art that the mouth is in direct contact with external threads, the upper flanging structure makes the mouth contact more comfortable, the drinking experience feeling is enhanced, meanwhile, the annular limiting plate is connected to the lower end of the neck structure, the lower flanging structure is connected to the outer ring of the annular limiting plate, and the annular limiting plate is matched with the lower flanging structure, so that the drinking experience feeling is improved. The contact area of the joint between the top cover installed on the tank body and the tank body is increased, and therefore the sealing degree between the tank body and the top cover is improved.

The application discloses a kind of electromagnetic shielding heat dissipation integration foam aluminum components of high frequency communication equipment, belong to foam aluminum component technical field, including base mechanism, the base mechanism end face is provided with two reinforcing layer mechanism, the base mechanism end face is provided with multiple clamping mechanisms, the base mechanism outer end surface is opened in multiple dovetail mechanism.Core area foam aluminum forms stable heat conduction path, quickly conducts the heat of core heating element, transition zone foam aluminum avoids the heat accumulation or electromagnetic leakage caused by local performance mutation, peripheral zone foam aluminum high connectivity pore provides smooth channel for airflow, nano-silver coating in reinforcing layer mechanism realizes preliminary reflection of electromagnetic wave, clamping mechanism ensures that composite sheet and pore inner wall are closely fitted, there is no gap leakage, avoid displacement caused by vibration, dovetail mechanism increases the stability of foam aluminum component installation, axial through-hole mechanism makes electromagnetic wave form cross scattering between channels, strengthens electromagnetic shielding effect.

The invention provides a preparation method of energy-saving artistic daily stoneware. A porcelain blank is prepared from the following chemical components in percentage by mass: 15%-24% of potassium feldspar, 20%-30% of quartz, 15%-25% of high-aluminum clay, 20%-30% of high-silicon clay and 6%-15% of bentonite. The ground glaze comprises the following chemical components in percentage by mass: 25%-35% of potassium feldspar, 5%-15% of high-purity quartz, 25%-45% of low-temperature frit, 5%-10% of Suzhou soil, 1%-15% of metal oxide and 10%-20% of low-temperature flux; and the cover glaze comprises the following chemical components in percentage by mass: 25-35% of albite, 10-15% of high-purity quartz, and 1-10% of medium-aluminum high-viscosity clay, low-temperature flux and alkali metal oxide. According to the preparation method of the energy-saving artistic daily stoneware, provided by the invention, the double-layer transmutation crystal artistic glaze for utensils prepared by the method can generate unlimited natural colors, and the use performance of the energy-saving artistic daily stoneware can be ensured while the artistic aesthetic feeling of the energy-saving artistic daily stoneware is ensured; and meanwhile, the processing process has the technical effects of energy conservation and high efficiency, and has higher economic value.

The invention discloses a smelting and forging process of a low-aluminum high-titanium nickel-based C263 alloy large-size cast ingot, and aims to provide a cast ingot with stable and reliable chemical components for a novel oxygen-enriched gas turbine combustion chamber inner shell rear ring forge piece so as to ensure that the performance of the forge piece meets the use of a gas turbine combustion chamber. According to the technical scheme, firstly, a vacuum induction furnace and a constant-melting-speed electroslag furnace (ESR) are adopted for smelting (phi 610 mm) cast ingots, the problem of inclusion of large ingot types of the alloy is solved, the forging ratio of large forgings is increased, and the finished product structure and the product performance are improved; and 2, the burning loss of the easily burnt element titanium is solved by adjusting the aluminum and titanium components of the electrode blank, adding titanium dioxide powder into the ternary pre-melting slag system and adding aluminum powder in the process, and the yield is improved. The method has the advantages that (1) the problem of large ingot inclusion is solved; (2) the stable yield of the easily burnt element titanium is ensured; (3) the macrostructure is qualified; (4) an electroslag process is adopted for replacing a consumable process for production for the first time, and the cost is reduced; and (5) large-size ingot casting solves the problem of insufficient forging ratio.

The invention discloses low-density high-aluminum high-manganese wear-resistant steel and a casting forming method thereof.The casting forming method of the low-density high-aluminum high-manganese wear-resistant steel comprises the steps that Al and RE or Ce are added into manganese steel, the Mn content is adjusted, and the low-density high-aluminum high-manganese wear-resistant steel is obtained; casting a wear-resistant part by using the low-density high-aluminum high-manganese wear-resistant steel; carrying out water toughening treatment on the casting by adopting a stepped high-temperature austenitizing heat treatment process; and the casting subjected to water toughening treatment is subjected to aging treatment. According to the method, the Mn / C ratio is controlled to cooperate with the hardness and toughness indexes of the material, the material density is reduced to be smaller than or equal to 6.8 g / cm < 3 > by regulating and controlling the Mn / Al ratio, a casting method is adopted for forming, the cracking problem caused by rolling forming is avoided, forming of special-shaped complex components is facilitated, step austenitizing water toughening treatment is adopted, reasonable aging treatment is carried out, and the quality of the special-shaped complex components is improved. The grain size level of the casting is controlled to be greater than or equal to grade 2, and the matrix strength Rm of the casting is improved to be greater than or equal to 850Mpa.

This invention relates to the field of metal powder preparation, specifically a method for preparing titanium-aluminum medium-entropy alloy powder based on vacuum consumable melting. A novel vacuum consumable melting process is used to prepare titanium-aluminum high-entropy alloy rods. Compared to traditional rod-making techniques, this method improves the preparation of electrode rods by employing vacuum consumable melting combined with homogenization annealing. The resulting titanium-aluminum medium-entropy alloy cast rods exhibit advantages such as no macroscopic segregation, uniform microstructure, and few pores, which significantly improves powder yield. Simultaneously, the titanium-aluminum medium-entropy alloy powder has extremely low oxygen content, good sphericity, and very few hollow powders and satellite powders.

1. The name of the design product: dining table base (double column aluminum high-low four claws). 2. The use of the design product: accessory base for assembling double column dining table. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.

The invention discloses a method for accurately and stably controlling aluminum-containing high-alloy steel inclusions, which belongs to the technical field of metallurgy and specifically comprises the following steps: S1, starting alloying when C is controlled to be greater than or equal to 0.08% at the tapping end point of a converter, the tapping temperature is greater than or equal to 1620 DEG C and the tapping quantity of the converter is 5-10t; s2, after LF refining is achieved, argon bottom blowing is conducted, slag materials are supplemented after refining power transmission and temperature rising are conducted, alloying is conducted after refining power transmission and temperature rising are conducted, alloy is not added any more in the middle and later periods of refining to adjust components, an Al line is fed for precipitation and deoxidation after power transmission is conducted for 5-10 min, sampling is conducted for analysis of the Al content of molten steel after power transmission is conducted for 5 min, when Al is smaller than or equal to 0.035%, the Al line is supplemented according to 0.040%, and after supplementing feeding, power is conducted for stirring, and a vacuum RH procedure is conducted; s3, sampling and analyzing Al before the steel ladle enters the station, if the Al content is low, feeding an Al wire before RH vacuumizing, then vacuumizing, not feeding the Al wire again after RH vacuum breaking, and performing weak calcium treatment after vacuum breaking; according to the method, the inclusions are effectively controlled, and aluminum-containing high-alloy steel inclusion detection rating is achieved, wherein A fines + B fines + C fines + D fines are smaller than or equal to 0.5, and A coarseness + B coarseness + C coarseness + D coarseness is smaller than or equal to 0.5.