1082 results about "Nonferrous metal" patented technology

The invention discloses a multi-parameter coupling intelligent regulation and control method and system in a vanadium ore smelting process, relates to the technical field of non-ferrous metal smelting automatic control, and solves the problems of feeding deviation and resource chain scission caused by slow response of an existing heat balance model to ore impurity fluctuation, online sensing lag and process island. The impurity concentration and the dielectric constant are obtained in real time through an LIBS / XRF combined probe and a microwave dielectric spectrum, rheological disturbance is dynamically corrected through extended Kalman filtering, a dynamic coupling response model is input, a thermodynamic interference factor is calculated, and a leaching and precipitation strategy is generated; performing mother liquor tail gas material flow collaborative optimization in parallel, constructing a multi-dimensional control vector U, performing iterative updating through near-end strategy optimization in a digital twin and issuing the multi-dimensional control vector U to an edge PLC (Programmable Logic Controller) in a distributed manner, and finally correcting a model weight through online XRD (X-Ray Diffraction) feedback; according to the method, the adaptive capacity to complex vanadium ore component disturbance, the response precision of online control and the inter-process resource circulation efficiency are remarkably improved.

The invention belongs to the technical field of image processing, and discloses a nonferrous metal target detection method and system for a scraped car. According to the method, through deep coupling of a GAN bimodal fusion network and a double-backbone network, a scraped car nonferrous metal target detection model is constructed, so that nonferrous metals in scraped cars are efficiently and accurately sorted. A bimodal fusion network is introduced into a model input layer, a fusion image with infrared thermal saliency and visible light texture features is generated, and the problem of cross-modal information splitting is solved; according to the dual-backbone network, standard convolution is replaced by a three-branch structure of an MGHCM module, large target contours, middle target semantics and small target details are synchronously captured, and self-adaptive shunting and efficient fusion of multi-scale features are achieved in cooperation with dynamic feature routing of a DHFBlock module; and the detection head network is optimized into a rotating frame prediction and cross-modal cross entropy classification mechanism so as to adapt to the placement scene of the metal fragments at any angle.

The present application relates to the technical field of heavy-metal pollution remediation, and relates in particular to a soil heavy‐metal accumulation predicting method employing an emission inventory and a receptor model. The method comprises: using atmospheric dust deposition, irrigation water, chemical fertilizers and pesticides as input flux sources of heavy metals to farmland soil, using surface runoff and crops as output fluxes, and constructing an input-output flux inventory of heavy-metal pollutants to clarify a dynamic balance relationship of soil heavy-metal accumulation; and continuously collecting and monitoring of soil samples. The invention provides crucial assistance in determining the transport balance of heavy metals in farmland areas impacted by non-ferrous metal smelting and beneficiation slag sites and in identifying sources of soil heavy-metal pollution, and offers theoretical guidance for subsequent soil heavy-metal remediation and targeted control.

The invention discloses a non-ferrous metal ingot detection method and equipment based on three-dimensional vision. Belongs to the field of nonferrous metal detection. The method comprises the steps of construction of a three-dimensional pixel model with laser projection structured light projection and line laser scanning camera shooting, adaptive filtering preprocessing, establishment of a three-dimensional point cloud model through deep learning, feature information extraction, deep learning algorithm identification and classification, production process problem analysis and optimization and the like in sequence. Therefore, high-precision, multi-angle and all-directional detection of the non-ferrous metal ingot is realized. The equipment comprises a multi-axis collaborative three-dimensional visual inspection subsystem consisting of a mounting bracket, an X-Y-Z servo motion platform, a line laser scanning camera and the like. According to the method, the quality detection precision and defect detection rate of the non-ferrous metal ingot can be effectively improved, detailed product quality analysis is provided, and the method plays an important role in improving the product quality, optimizing the production process and reducing the production cost.

The invention relates to the technical field of conductive copper paste, in particular to conductive copper paste prepared by combining liquid nonferrous metal with graphene and a preparation method of the conductive copper paste. The preparation method comprises the following steps: weighing nano-copper coated graphene composite powder, a liquid nonferrous metal, a binder, trifluoropropyltrimethoxysilane, an auxiliary agent and copper powder, and then preparing trifluoropropyltrimethoxysilane into a dilute solution; copper powder and the nano-copper coated graphene composite powder are mixed to obtain composite powder; the liquid nonferrous metal and the composite powder are stirred to obtain metal paste; and adding a resin solution and an auxiliary agent into the metal paste to form printing paste, and then standing and curing. According to the conductive copper paste, the liquid nonferrous metal serves as a main binding phase, the defect that the welding thrust is low due to a traditional resin system is overcome, the problems of dispersion and interface compatibility are solved through cooperation of the nano-copper-coated graphene and the silane coupling agent, and finally the conductive copper paste with extremely low resistance, high stability and ultrahigh welding thrust is obtained.

A radio frequency (RF) feedthrough component having an impedance greater than 20 ohms is disclosed. The feedthrough includes a ceramic body having a flexible non-ferrous conductor adhered to its outer peripheral surface and to an inner peripheral surface of an aperture through the ceramic body. A non-ferrous conductive lead is disposed through the aperture and protrudes from at least one side thereof. A non-ferrous hermetic seal is formed between a portion of the non-ferrous conductive lead disposed in the aperture and the non-ferrous conductor adhered to the surface of the aperture. The RF feedthrough can be assembled in an opening of a conductive housing to form an electromagnetically shielded package for an electrical circuit.

The invention relates to the technical field of non-ferrous metal metallurgy, and discloses a multi-gun top-blown furnace high-temperature infrared monitoring spray gun position intelligent regulation and control method and system, and the method comprises the steps: carrying out the dimension reduction processing of key data in a blowing process through principal component analysis; processing the output preprocessed key data by using a recurrent neural network model; the recurrent neural network model captures a long-term dependency relationship of temperature change, predicts dynamic parameter change in the smelting process, and outputs an adjustment demand of the height of the spray gun; adjusting the height of the spray gun in real time by adopting a closed-loop control system based on the prediction result of the adjustment demand; and the predicted adjustment requirement of the spray gun height is converted into a control signal, and the spray gun height of the multi-gun top-blowing converting furnace is dynamically adjusted through an execution mechanism. The system comprises a data processing module, a height output module and a feedback loop module. According to the method, the height of the spray gun is continuously corrected and adjusted according to actual conditions, so that the stability and optimization effect of the process are kept.

The invention belongs to the technical field of non-ferrous metal processing and materials, and relates to an Al-Mg-Mn series cast aluminum alloy capable of being anodized and a vacuum die-casting process thereof, and the Al-Mg-Mn series cast aluminum alloy capable of being anodized comprises, by weight, 2.5%-4.5% of Mg, 1.6%-2.6% of Mn, 0.4%-0.8% of Si, 0.1%-0.25% of La, 0.2%-0.4% of Ce, less than or equal to 0.15% of Fe, less than or equal to 0.10% of Ti, less than or equal to 0.06% of Cu, less than or equal to 0.05% of single other impurities, less than or equal to 0.15% of total impurities and the balance Al. According to the Al-Mg-Mn series cast aluminum alloy T5 capable of being anodized, after heat treatment, the ultimate tensile strength is 280-320 MPa, the yield strength is 150-180 MPa, the percentage elongation after fracture is 8-14%, and meanwhile the Al-Mg-Mn series cast aluminum alloy T5 has excellent anodizing performance and casting performance and meets the development trend and requirements of light weight, integration and attractiveness in the fields of consumer electronics, automobiles and the like.

The invention discloses a high-bismuth slag and precious lead co-processing and efficient recycling method, and belongs to the technical field of non-ferrous metallurgy. High-bismuth slag and precious lead are mixed to obtain impurity-removed precious lead through impurity removal processes such as plug-blow antimony removal, liquation copper removal and tellurium removal by adding agents, and the impurity-removed precious lead is subjected to an oxidation refining process to obtain gold-silver alloy to recover precious metal. Bismuth and lead are similar, silver can be infinitely dissolved in a molten state, and the silver trapping agent has good silver trapping capacity. The high-bismuth slag and the precious lead are mixed to greatly reduce the temperature of a system, volatilization and unknown loss of metal such as Ag are reduced, energy consumption is remarkably reduced, the production cost is reduced, the recovery rate of metal such as bismuth, antimony and silver is increased, and the production efficiency is improved. The obtained molten slag is used for smelting high-bismuth slag, the obtained soot is used for smelting crude antimony, and efficient cyclic utilization of rare and precious metal resources is achieved.

The utility model discloses non-ferrous metal strip detection equipment which comprises a guide roller and a strip driven by an external winding drum to move on the guide roller, the upper side and the lower side of the strip are respectively provided with a group of mounting plates and a fixed frame, the mounting plates are provided with at least two groups of fixed cameras, the two groups of fixed cameras are arranged in a staggered manner, and the fixed cameras are arranged on the guide roller. An illuminating lamp is mounted on the fixed camera; a plurality of sliding grooves are evenly formed in the fixing frame, sliding seats are arranged in the sliding grooves in a sliding mode, and tracking cameras are arranged on the sliding seats. According to the utility model, the industrial camera is adopted for visual inspection, so that the machine row speed during belt material transportation can be improved, the working efficiency is further improved, the defect detection rate and the detection result accuracy are also improved through multiple times of detection confirmation, the difference degree between the detection result and the defect actually existing on the surface of the whole roll of belt material is greatly reduced, and the product quality is improved. And the overall quality of products is improved.

The invention belongs to the field of non-ferrous metal cast rolling production equipment, and relates to a front cooling high-speed cast rolling machine and a production method thereof. The pair of casting and rolling rollers is mounted in the casting and rolling archway; the casting and rolling transmission system is used for driving the casting and rolling rollers to rotate; the rotary cooling system is used for cooling the casting roller; the belt type pre-cooling device is mounted on the cast-rolling archway and is positioned at the upstream of the cast-rolling roller, and the belt type pre-cooling device comprises an upper cooling steel belt and a lower cooling steel belt which are arranged to form a cooling channel for receiving and cooling the casting molten aluminum; the belt type pre-cooling transmission device is used for driving the upper cooling steel belt and the lower cooling steel belt to move; the controlled cooling spraying system is used for cooling the upper cooling steel strip and the lower cooling steel strip; and the belt type pre-cooling device is configured to pre-cool the casting molten aluminum before the casting molten aluminum enters the casting roller, so that the liquid-solid phase ratio of the casting molten aluminum is reduced, and the purposes of shortening the cooling and solidification time, improving the casting and rolling speed and increasing the productivity are achieved.

The utility model discloses a fine-grain nanocrystalline homogenization magnetic field stirring crystallizer capable of achieving an ecological cold-water-free accompanying system, and relates to the technical field of non-ferrous metal casting, the fine-grain nanocrystalline homogenization magnetic field stirring crystallizer comprises a fixed stirring assembly and a movable stirring assembly, and the fixed stirring assembly comprises a plurality of fixed coils evenly distributed on the periphery of the crystallizer; the movable stirring assembly comprises a plurality of movable coils evenly distributed on the periphery of the fixed stirring assembly, the movable coils and the fixed coils are distributed in an included angle mode, and the movable stirring assembly is configured to rotate and move relative to the fixed stirring assembly, so that the movable coils can be correspondingly matched with the fixed coils in the local area. Composite magnetic field distribution is formed in a corresponding local area, so that the magnetic field distribution condition of the local area is accurately adjusted, local directional stirring of the melt is achieved, the stirring effect of the melt is accurately controlled, it is ensured that the melt in each area can be uniformly stirred, and therefore the temperature cooling uniformity is improved, and the crystal growth quality and stability are guaranteed.

The invention discloses a non-ferrous metal calendaring defect detection method based on machine vision, and relates to the technical field of machine learning and image data processing, and the method comprises the following steps: S1, aiming at a non-ferrous metal calendaring strip surface defect detection task, systematically collecting training data and constructing a data set by relying on an actual industrial production line; s2, suppressing reflective noise through multi-scale gradient coherence filtering and enhancing a real defect edge to obtain an enhanced image; s3, constructing and training a non-ferrous metal calendaring defect detection model in combination with the multi-scale feature fusion vector; and S4, detecting the preprocessed image based on a non-ferrous metal calendaring defect detection model to obtain a defect detection result. The problems of metal strong reflection interference, large defect scale difference, sample scarcity, category imbalance and the like in the existing detection are solved. And the non-ferrous metal calendaring defect detection precision and robustness can be effectively improved.

The present application relates to the technical field of the treatment of heavy metal pollution, and in particular, to a method for predicting heavy metal accumulation in soil based on an emission inventory and a receptor model. Atmospheric dust fall, irrigation water, a fertilizer, and a pesticide are used as heavy metal input flux sources of farmland soil, and surface runoff and a crop are used as output fluxes. A heavy metal pollutant input-output flux inventory is established to specify a dynamic equilibrium relationship of heavy metal accumulation in soil, and soil samples are collected and monitored continuously, which provides important help for determining a migration equilibrium of heavy metals in a farmland region affected by a nonferrous metal dressing and smelting slag yard and a source of soil heavy metal pollution, thereby providing theoretical guidance for subsequent prevention and accurate control of heavy metals in soil.

The invention provides a method for preparing high-purity titanium from ferrotitanium complex ore, and relates to the technical field of nonferrous metallurgy. The method comprises the following preparation steps: calculating and adding a carbonaceous reducing agent according to the components of the ferrotitanium complex ore and a specific principle, mixing and pelletizing, and reducing to generate a Fe (alloy)-TiC-MOx mixture; according to the content of TiC and Fe in the mixture, adding metal iron powder and Fe2O3 or iron ore concentrate according to a certain stoichiometric ratio, mixing, pelletizing, and reducing to obtain a titanium-iron alloy; and the obtained ferrotitanium alloy serves as a soluble anode, and high-purity titanium is prepared through electrolysis in halide molten salt containing low-valence titanium salt. According to the method, the reaction characteristic of iron and iron oxide with TiC at high temperature is utilized, the ferrotitanium alloy is generated from the ferrotitanium complex ore to serve as the soluble anode, then the high-purity titanium is prepared through molten salt electrolysis, the adverse effects of component deviation and anode precipitates existing in the soluble anode containing the titanium compound are avoided, and meanwhile casting forming is easy, and the method is more suitable for industrialization.

The invention relates to a noble metal catalyst derived from a metal organic framework, in particular to a ZIF-8-derived ruthenium elementary substance-ruthenium oxide-loaded catalyst as well as a preparation method and application thereof, and belongs to the technical field of advanced nonferrous metal materials, in particular to the field of noble metal nano catalytic materials. According to the invention, the zinc-based metal organic framework compound ZIF-8 is used as a precursor, the ruthenium-loaded elemental ruthenium-ruthenium oxide catalyst is controllably synthesized, and the catalytic activity and stability of the ruthenium oxide catalyst are effectively improved, so that the ruthenium oxide catalyst can be used as a high-activity and good-stability PEM electrolyzed water cathode / anode catalyst.

The invention relates to the technical field of non-ferrous metal dust treatment, and provides a pneumatic cyclone tower for explosive aluminum magnesium dust treatment and a dust removal method of the pneumatic cyclone tower. The spraying tower is fixedly mounted at the top of the base, and the inner wall of the center of the spraying tower is rotationally connected with a long rod; the windmill blades are fixedly mounted at the top end of the long rod, and a water sprayer is fixedly mounted on the inner wall of the spray tower. The motor drives the long rod to drive the windmill blades to rotate, the windmill blades are matched with the water sprayer to form spiral rotating airflow, and the collision fusion efficiency of dust and liquid drops is improved; the long rod synchronously drives the scraping plate to scrape dust accumulated on the tower wall, multi-stage filtration is achieved in cooperation with the filter screen, and waste water is recycled through the water return pipeline. The scheme solves the problems that existing equipment is low in dust removal efficiency and difficult to clean, and has the advantages of being efficient, low in energy consumption and easy to maintain.

The invention discloses a comprehensive treatment method of platinum and palladium slag, and relates to the technical field of non-ferrous metal metallurgy. After the platinum and palladium slag is subjected to sulfating roasting, flue gas is introduced into a selenium absorption tower; hydrolyzing the roasting slag, reducing the dissolving solution to recover tellurium, and enabling the dissolving solution to enter a copper recovery process after tellurium precipitation; the dissolving slag is subjected to chlorination dissolution gold separation, and the gold separation slag is subjected to silver recovery; the gold separation liquid is reduced to obtain gold powder; carrying out platinum and palladium precipitation on the gold reduced solution, adding ammonia water into platinum and palladium precipitation to carry out platinum and palladium separation, respectively refining the separated platinum and palladium, and recovering platinum and palladium; carrying out platinum-palladium reduction on the platinum-palladium precipitation post-solution to obtain platinum-palladium precipitation slag and a platinum-palladium reduction post-solution, and returning the platinum-palladium precipitation slag to the roasting process; and performing tellurium reduction on the platinum-palladium reduced liquid to obtain tellurium powder and tellurium reduced liquid, and enabling the tellurium reduced liquid to enter a wastewater treatment process. The method has the beneficial effects that selenium, tellurium, copper, gold, silver, platinum and palladium are separated and recycled step by step, the recycling rate is high, the wastewater treatment difficulty is small, and environmental pollution is reduced.

The invention relates to the technical field of electrical performance testing, and discloses a multi-class nonferrous metal breakdown voltage testing device, system and method. The testing device comprises a testing groove provided with a plurality of independent clamping grooves, a temperature and humidity regulation and control system, an electrode module, a power module and a data acquisition module, and high-precision breakdown voltage testing of multiple samples in a constant environment is achieved through multi-channel synchronous testing, temperature and liquid level dynamic control, symmetrical electrode layout and high-speed data acquisition. The system is integrated with a central control unit, the boosting rate is automatically set according to sample parameters, multiple channels independently boost and synchronously collect breakdown data, and a double-threshold algorithm is adopted to judge breakdown events in real time. The method comprises the whole process of solution preparation, sample installation, electric field optimization, boost control and data judgment. Compared with the prior art, the testing efficiency and the measuring precision are improved, the environmental interference is reduced, and the method is suitable for batch detection and quality control of tantalum, niobium and oxide materials of the tantalum, the niobium and the oxide materials of the tantalum and the niobium.

The invention relates to a method for recycling battery-grade nickel sulfate from nickel-containing industrial waste, and belongs to the technical field of nonferrous metallurgy. The method comprises the steps that the nickel-containing industrial waste is subjected to water leaching treatment, and nickel-containing leachate is obtained; carrying out gradient pH regulation and control on the nickel-containing leaching solution by adopting calcium carbonate to obtain a purified solution; carrying out first countercurrent extraction on the purified liquid by adopting an organic phase I with the D2EHPA concentration of 0.1-0.3 mol / L; carrying out second counter-current extraction on the raffinate I obtained in the step (3) by adopting an organic phase II with the CYANEX 272 concentration of 0.05-0.2 mol / L; the raffinate II obtained in the step (4) is subjected to adsorption and oil removal through activated carbon and then is subjected to evaporative crystallization, and nickel sulfate crystals and crystallization mother liquor are obtained. The method is high in nickel recovery rate, the purity of nickel sulfate is larger than or equal to 99.9%, and the sodium content is low.

To provide a modified polyisocyanate having high adhesive property to a non-ferrous metal and applicable to a one-coat coating material.SOLUTION: A modified polyisocyanate is a reaction product which has as the raw material, components containing an alkoxysilane (a1) having a primary amino group, an unsaturated carboxylic acid alkyl ester (a2) or a saturated carboxylic acid alkyl ester (a3), and a polyisocyanate (a4). The unsaturated carboxylic acid alkyl ester (a2) is at least one kind selected from the group consisting of a branched alkyl ester (a2-1) of an unsaturated dicarboxylic acid, and a branched alkyl ester (a2-2) which may contain a hetero atom of an unsaturated monocarboxylic acid or has a cyclic structure. A production method of the modified polyisocyanate, and a coating containing the same are also provided.SELECTED DRAWING: None

The invention discloses a multi-scale research method for improving the separation efficiency of impurities in an ultra-pure metal system. The multi-scale research method comprises the following steps that tellurium crystals are prepared through a zone melting method, and purity and crystal face orientation analysis is conducted; simulation analysis is carried out in combination with experimental data, firstly, phase field simulation is used for analyzing conversion of an interface structure and grain competition-driven orientation in the solidification process, then the density functional theory is used for calculating and analyzing adsorption energy of solid phases on different crystal faces at the solid-liquid interface to impurity atoms, and the structure-activity relationship between crystal face orientation and impurity separation efficiency is obtained. Finally, the crystal face and the preferred orientation degree of the tellurium crystal are regulated and controlled through a Bridgman method, and the impurity separation efficiency is improved. By means of the mode, the key factors influencing trace impurity atom separation can be obtained, the universal method for improving the impurity separation efficiency in the ultra-pure metal system is obtained, and development of the non-ferrous metal metallurgy field is promoted.

The present invention belongs to the fields of electrical and electronic engineering and advanced nonferrous metal additive manufacturing. Specifically, it relates to a method for preparing copper alloy-tungsten-copper composite electrical contacts using laser additive manufacturing. The method uses coaxial powder feeding laser cladding to prepare a nickel or nickel alloy coating as an intermediate layer on a copper alloy substrate. This is followed by laser cladding to prepare a tungsten-copper coating. The composite electrical contact consists, in sequence, of a pure copper or copper alloy substrate layer, a pure nickel or nickel alloy coating, and a tungsten-copper coating. The resulting electrical contact has high electrical and thermal conductivity and good resistance to arc erosion. Using laser cladding technology to prepare copper alloy-tungsten-copper electrical contacts can effectively reduce production costs, improve production efficiency, and facilitate subsequent maintenance and repair, making it environmentally friendly.

The utility model relates to the technical field of non-ferrous metal processing, and discloses a raw material color sorter for non-ferrous metal processing, which comprises a bottom plate, a support fixedly connected to the top end of the bottom plate, a feeding assembly arranged at the top end of the support, a boss fixedly connected to the right end of the support, a plurality of angle iron sheets detachably connected to the top end of the boss through bolts, and a color sorter arranged on the bottom plate, by arranging the feeding hopper, the feeding guide plate and the material guide groove, firstly, a proper amount of raw materials are put into the feeding hopper and then fall to the feeding guide plate, due to the dead weight of the raw materials, the feeding guide plate can incline along the hinged position, the materials enter the material guide groove, and the materials are fed into the feeding guide plate through the feeding guide plate. The materials slide downwards along the inner wall of the material guide groove, when the sorting mechanism detects particles with different colors, the particles with different colors are sorted into the front side storage space of the material storage box, normal particles are sorted into the rear side storage space of the material storage box, and therefore sorting of the materials is completed.

The invention relates to a method for preparing high-purity bismuth by removing impurity lead in refined bismuth through oxidation slagging, and belongs to the technical field of non-ferrous metals. Melting and oxidizing: melting a lead-containing refined bismuth raw material at 300-400 DEG C, adding bismuth oxide into the molten bismuth, and fully stirring to enable the bismuth oxide and lead to generate oxidation reaction to generate lead oxide; slagging reaction: adding boric anhydride (B2O3) into the melt, and enabling the boric anhydride (B2O3) to react with the generated lead oxide to generate lead borate slag; slag salvaging and lead removal: stirring for 30-60 minutes at the temperature of 300-400 DEG C in a heat preservation manner, so that the slagging reaction is fully carried out, generated lead borate slag with lower density floats to the surface of a melt, and a lead-containing slag phase is removed in a mechanical or manual slag salvaging manner; and after the slag salvaging process is finished, cooling the bismuth melt under a protective atmosphere until the bismuth melt is solidified to obtain a lead-removed high-purity bismuth product. According to the method, bismuth oxide and boric anhydride are introduced, metal lead is converted into lead borate slag easy to float, efficient and deep separation of lead and bismuth melt is achieved through the density difference, and the lead content can be reduced to 1 ppm or below.

The invention discloses a high-silicon high-magnesium aluminum alloy and a preparation method thereof, relates to the field of nonferrous metal materials and processing thereof, and effectively improves the microstructure of the alloy by utilizing the interaction among alloy elements and adding a composite alterant. The heat-treatment-free high-silicon and high-magnesium aluminum alloy which is more excellent in performance, different from existing traditional Al-Mg series (high-magnesium and low-silicon) and Al-Si series (high-silicon and low-magnesium) aluminum alloys and suitable for die casting is prepared. Compared with the prior art, the alloy has good casting performance and good obdurability at the same time, the requirement for aluminum alloy performance in the automobile lightweight field can be met, and production of large complex thin-wall integrated die-casting aluminum alloy castings can be achieved.

The invention discloses a high-strength, high-toughness and high-plasticity aluminum alloy and a casting and forging composite preparation method thereof, which belongs to the technical field of nonferrous metal alloys and solves the problem that the aluminum alloy forgings in the prior art have uneven structures and cannot have both high strength, toughness and high plasticity. The components of the aluminum alloy include, by mass percentage: Cu 4.2-5.0%, Mg 0.5-1.4%, Mn 0.6-1.0%, Cr 0.1-0.2%, Ti 0.1-0.15%, B 0.01-0.1%, single impurity ≤ 0.05%, total impurity ≤ 0.15%, and the balance is Al. The aluminum alloy has a tensile strength of 450-480 MPa, a yield strength of 340-360 MPa, and an elongation after fracture of 14-16%. The preparation method of the invention includes batching, smelting, extrusion casting, homogenization annealing, forging, and solid solution aging treatment.

The invention discloses a process for extracting high-purity vanadium pentoxide from ammonium polyvanadate, and belongs to the technical field of nonferrous metallurgy. According to the process, efficient purification of vanadium pentoxide is achieved through the steps of sodium hydroxide dissolution, pH adjustment, gradient impurity removal, precise filtration, freezing-unfreezing circulation, high-purity water washing, centrifugal dewatering, two-stage firing and the like. In the process, the gradient impurity removal technology effectively reduces the content of impurities such as iron, sodium and the like, the precision filtration system ensures low residue of the impurities, the freezing-unfreezing circulation step further improves the crystal purity, and the two-stage firing process realizes directional conversion of the alpha-V2O5 crystal form. The purity of the obtained vanadium pentoxide product reaches up to 99.99% or above, the Na < + > content is smaller than or equal to 2 ppm, the Fe residue is smaller than or equal to 5 ppm, the alpha-V2O5 crystal form proportion is larger than or equal to 98%, the problems that in a traditional process, deep impurity removal is difficult, the product purity is insufficient, and crystal form conversion is incomplete are remarkably solved, and an effective technical approach is provided for preparing high-purity vanadium pentoxide.

The invention belongs to the field of flotation, and particularly relates to an alpha-(N, N-dialkyl-NCSS) acetic acid collecting agent and a preparation method and application thereof, and the collecting agent is a compound with a formula 1 # imgabs0 # structure. Innovative research shows that the compound with the structure shown in the formula 1 can accidentally and synchronously consider the physicochemical characteristics of the non-ferrous metal oxidized ore and the sulfide ore based on combination and synergy of molecular structures, and excellent collecting capacity and effect can be obtained.

The invention relates to the technical field of non-ferrous metal hydrometallurgy, in particular to a method for separating molybdenum and rhenium from molybdenum smelting waste acid by using resin, which comprises the following steps: adding a phosphorus source into the molybdenum smelting waste acid, and then adjusting the acidity to an acid environment in which the hydrogen ion concentration is greater than or equal to 1mol / L; molybdenum and rhenium in the molybdenum smelting waste acid with the acidity adjusted are separated through weak-base anion exchange resin, and a rhenium product with the lower molybdenum impurity content is obtained. According to the method, the phosphorus source is added into the molybdenum smelting waste acid, so that phosphate ions are hydrolyzed from the phosphorus source, molybdenum can be effectively prevented from being adsorbed by the alkalescent anion exchange resin, the selectivity of the anion exchange resin to rhenium is greatly improved, and the rhenium recovery rate and the molybdenum-rhenium separation effect are improved; the problems that in the prior art, ion exchange resin is difficult to adapt to molybdenum-rhenium separation under the high molybdenum concentration, the rhenium recovery rate is low, the rhenium-molybdenum separation effect is poor, and a high-molybdenum-concentration solution cannot be treated are solved.