1612 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 utility model discloses a novel eddy current sorting machine which comprises a box body, one side of the box body is sequentially provided with a non-ferrous metal collecting groove and a non-metal collecting groove from far to near, the other side of the box body is provided with a vibration feeding structure, and the two sides of the top of the box body are respectively provided with a supporting plate and a sliding inclined slide carriage. The supporting plate is arranged on the side close to the vibration feeding structure, the supporting plate and the vibration inclined slide carriage are arranged in a V shape, the material distributing plate is installed between the non-ferrous metal collecting tank and the non-metal collecting tank, the material distributing plate deviates to the sliding inclined slide carriage, and the magnetic roller structure is arranged on the lower side of the sliding inclined slide carriage. According to the novel eddy current sorting machine, a vibrating feeder and an eddy current sorting method are ingeniously combined, the characteristics of loose particle materials of the vibrating feeder are utilized, materials passing through a sorting area are made to be single-layer materials, it is guaranteed that each metal particle is evenly stressed, and the sorting precision and efficiency are 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 present invention discloses an optimization polishing method and system for nonferrous metal alloy die castings, which relates to the technical field of optimization polishing of alloy die castings, and includes the following steps: the laser polishing equipment first performs surface treatment on the zinc-aluminum alloy die castings at an initial scanning speed, and at the same time, the visual inspection system obtains the defect data on the surface of the casting in real time, dynamically tracks the surface changes of the casting, and provides accurate input for intelligent evaluation. The present invention combines the laser polishing equipment and the visual inspection system to identify the surface defects of the casting in real time and dynamically adjust the laser scanning speed and power, thereby solving the problem of uneven surface caused by fixed scanning speed. The system intelligently evaluates the severity of defects, ensures that the laser energy acts evenly on the surface, avoids overheating or insufficient treatment, improves the surface finish and appearance quality of the casting, reduces surface damage and material waste, and thus improves production efficiency and product performance.

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.

The invention provides a treatment method of a nickel sulfate solution, and relates to the technical field of non-ferrous metal smelting. The treatment method of the nickel sulfate solution comprises a neutralization procedure, an extraction and oil removal procedure, an electrodeposition procedure and a nickel deposition procedure, in the neutralization procedure, a nickel deposition material generated by anolyte deposition in the nickel deposition procedure serves as a neutralizer to adjust the pH value back, and the solution obtained after neutralization and impurity removal is subjected to extraction, oil removal and electrodeposition to obtain anolyte. And continuously precipitating the anolyte to obtain a nickel precipitation material. The first solid produced by the treatment method of the nickel sulfate solution can be used for pyrogenic production of high matte nickel and electrodeposition procedures, part of impurities in raw materials can be discharged out of a system through the first solid, no dangerous waste residue is produced, and therefore the number of needed filter presses, the number of solid residue filter pressing times and the residue discharging workload are reduced. As calcium powder is not used for neutralization in the neutralization process, the problem of pipeline blockage caused by precipitation of saturated calcium is reduced.

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 discloses a nickel and cadmium-containing nonferrous metal wastewater treatment method, and relates to the technical field of wastewater treatment. The preparation method comprises the following steps: by taking polyvinyl alcohol and gelatin as raw materials, carrying out amination modification through 3-amino-trimethoxysilane to prepare an aminated gelatin solution, and then adding a modified metal organic framework adsorption material and modified nitrogen-containing biochar to react to prepare an adsorbent with a good adsorption effect on metal nickel and cadmium. The modified metal organic framework adsorption material and the modified nitrogen-containing biochar have amino groups, so that the modified metal organic framework adsorption material and the modified nitrogen-containing biochar have good dispersibility in the aminated gelatin, and the adsorption effect of the adsorbent is improved.

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 discloses a high-strength medium-thin wear-resistant steel plate NM600 and a production method thereof, and belongs to the field of metallurgy, alloy or non-ferrous metal treatment. The steel plate comprises the following chemical components in percentage by mass: 0.35 to 0.4 percent of C, 0.4 to 0.75 percent of Si, 1.0 to 1.80 percent of Mn, 0.9 to 1.1 percent of Cr, 0.5 to 0.7 percent of Mo, less than or equal to 0.0255 percent of Nb, less than or equal to 0.020 percent of P, less than or equal to 0.010 percent of S, more than or equal to 0.010 percent of Als, 0.0005 to 0.0060 percent of B and the balance of Fe and inevitable impurities. The thickness of the steel plate ranges from 2.0 mm to 12.0 mm, and the width of the steel plate ranges from 1500 mm to 2000 mm. C, Mn and Cr are reasonably designed, so that the content of precious alloy of Ni and Mo can be effectively reduced, the mechanical property is not reduced, and the effect of reducing the cost is achieved.

The invention relates to an in-situ soiling method for tailings of a mine tailing pond in use and application, and belongs to the resource utilization and ecological restoration technology of a tailing pond district, the in-situ soiling method comprises the following steps: step 1, leveling the tailings of the mine tailing pond in situ, turning over and loosening the tailings of 40cm on the surface layer, adding exogenous organic matters, and uniformly mixing to obtain a tailing matrix; 2, spraying a mine area soil plant rhizosphere bacterial liquid into the tailing matrix, and culturing in situ for 20-40 days to preliminarily form a soil-like matrix suitable for field planting of pioneer plants; 3, the pioneer herbaceous plants are sown, and functional microorganisms are inoculated. By means of the application of the method, all-season evergreen of reclamation vegetation in the in-use tailings pond and stable solidification and non-migration of heavy metal can be achieved, water and soil loss and environmental pollution of tailings are effectively controlled, and technical support is provided for large-area popularization of ecological restoration of non-ferrous metal tailings ponds in China.

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 relates to the technical field of nonferrous metal production and processing, and discloses aluminum alloy degassing refining equipment which comprises a movable base, an adjusting assembly is arranged on the top of the movable base, a degassing assembly is arranged on the top of the movable base, and the adjusting assembly comprises a first supporting plate fixedly installed on the top of the movable base. An adjusting structure is arranged in the first supporting plate, the degassing assembly comprises a second supporting plate arranged at the top of the movable base, a degassing structure is arranged at the bottom of the second supporting plate, and the adjusting assembly further comprises a first hydraulic air cylinder fixedly installed at the top of the first supporting plate; the adjusting structure comprises a first hydraulic push rod fixedly installed at the top of the inner side of the first supporting plate, and one end of the first hydraulic push rod is fixedly provided with a first lifting plate, so that the purpose of adjusting the position of the device is achieved, the device is lifted according to the depth of the metal material pool, and the using flexibility of the device is improved; and sufficient degassing treatment of metal is facilitated, and the use experience of the device is optimized.

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 relates to the technical field of non-ferrous metal wire drawing, in particular to a wire drawing device for copper wire machining. The wire drawing device comprises a base, a processing cavity is formed in the top of the base, a pair of wire winding mechanisms arranged at intervals is arranged on the inner bottom wall of the processing cavity, and a cleaning mechanism, a dirt removing mechanism and a wire drawing mechanism are sequentially arranged between the two wire winding mechanisms; according to the wiredrawing device for copper wire processing, the cleaning bin is used for removing an oxide layer on the surface of a thick copper wire, the heat dissipation interlayer can absorb heat generated in the wiredrawing process of the wiredrawing die, and the heat dissipation interlayer can convey heated cooling liquid into the dirt removal box; the decontaminating liquid in the decontaminating box is used for washing away the residual chemical cleaning agent on the surface of the thick copper wire after being heated, the decontaminating box can convey the cooled decontaminating liquid back to the heat dissipation interlayer so as to cool the wire drawing die, and the decontaminating liquid (namely hot water) retained on the surface of the thick copper wire can lubricate the thick copper wire when passing through the wire drawing die.

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 invention relates to the technical field of recovery processes of waste oil refining catalysts, in particular to a low-energy-consumption method for comprehensively recovering a waste hydrogenation catalyst. The method comprises the following steps: firstly, carrying out vacuum pyrolysis on the waste hydrogenation catalyst to obtain heavy oil and a deoiled waste catalyst; then the deoiled waste catalyst is smashed and then subjected to oxidizing roasting to remove sulfur and carbon in the waste catalyst, and roasted clinker is obtained; carrying out acid leaching and solid-liquid separation on the roasted clinker to obtain a leaching solution and leaching residues; wherein valuable metal ions in the leachate are respectively recovered by using a solvent extraction method; and after leaching residues are subjected to secondary leaching through sodium hydroxide, aluminum in the leaching residues is recycled, and a sodium metaaluminate solution is obtained. According to the technical scheme, selective recovery of molybdenum, vanadium, nickel and aluminum in the waste hydrogenation catalyst can be achieved, the recovery rate is high, energy consumption is low, pollution of the waste hydrogenation catalyst to the environment can be relieved, and sustainable utilization of non-ferrous metal resources can be achieved.

The invention discloses a temper mill unit and a working method thereof, belongs to the technical field of steel and non-ferrous metal plate strip machining, and aims to solve the problem that in the prior art, strip steel is prone to jamming when strip heads penetrate through all devices. The flattening unit comprises an uncoiling machine (2), an uncoiling side guide plate device (3), an uncoiling side tension roller (4), a flattening machine (5), a coiling side tension roller (6), a coiling side guide plate device (7) and a coiling machine (8) which are sequentially arranged from right to left. The lower roller of the uncoiling side tension roller and the lower roller of the coiling side tension roller in the temper mill unit can swing up and down, the smoothness and the automation degree of strip threading are improved, the passing ability of strip threading can be greatly improved, and therefore the auxiliary production time is saved, and the production efficiency is improved.

The invention provides a titanium alloy surface laser ultrasonic composite cleaning reinforced welding method, belongs to the technical field of non-ferrous metal surface cleaning and modification, and aims to solve the problems of poor welding seam quality and poor surface corrosion resistance, fatigue resistance and the like in the titanium alloy welding process. The cleanliness of the surfaces of components, welding grooves and the like is improved, and the production and machining efficiency is improved. In the fusion welding process, ultrasonic excitation of a high-energy beam is applied to the back face of a weld joint, the grain size of the weld joint is refined, the mechanical property of a connector is improved, rotating ultrasonic waves are applied to the surface of a component and the weld joint, the component and the surface of the weld joint generate plastic deformation, and the overall performance of the component and the surface of the weld joint is improved. The high temperature resistance, the corrosion resistance, the fatigue resistance and the like are improved.

The invention discloses a shearing system for nonferrous metal plate production, and relates to the technical field of nonferrous metal plates, the shearing system comprises a base plate, the top surface of the base plate is fixedly provided with an uncoiler used for uncoiling, the top surface of the base plate is fixedly provided with a decoiler used for leveling the nonferrous metal plates, and the bottom surface of the base plate is fixedly provided with two supporting beams; two first supporting frames are fixedly mounted on the top face of the base plate, and through mutual cooperation of a third electric push rod, a positioning block, a connecting rod, a supporting rod, a chuck, a limiting column, a cover plate, a limiting hole, a second electric push rod, a mounting plate and a tension dynamometer, tension can be applied to one side of the non-ferrous metal plate, so that the non-ferrous metal plate reaches the state before extension, and the shearing effect is improved; through mutual cooperation of a first driving motor, a worm, a worm gear, a mounting rod, a second movable plate, a supporting shaft, a base block, a connecting block, a first shear knife and a measuring plate, the non-ferrous metal plate can be sheared, and the shearing effect on the non-ferrous metal plate is achieved.

The utility model discloses a metallurgical wastewater pretreatment device. Metallurgical wastewater comprises clean wastewater, polluted acid wastewater and acidic wastewater, the metallurgical wastewater pretreatment device comprises a vulcanization reaction tank, a neutralization reaction tank, a neutralization reaction water production tank and a softening reaction tank which are sequentially arranged along the treatment direction of waste acid wastewater, the reaction water production tank and the softening reaction tank are sequentially arranged along the treatment direction of the acid wastewater; the coagulative precipitation tank is arranged along the treatment direction of the clean wastewater; effluent of the softening reaction tank and the coagulative precipitation tank enters a subsequent advanced treatment system. The pretreatment device disclosed by the utility model is used for wastewater pretreatment of the whole plant in the non-ferrous metal smelting industry, clean sewage diversion and rain sewage diversion are adopted, water balance, energy conservation and consumption reduction of the whole plant are realized, and finally resource utilization of the whole plant is realized.

The invention provides a non-ferrous metal metallurgy high-chlorine wastewater treatment device, and relates to the technical field of wastewater treatment equipment, the non-ferrous metal metallurgy high-chlorine wastewater treatment device comprises an electrolysis assembly, the electrolysis assembly is connected with a flocculation reaction tank, and the flocculation reaction tank comprises a dosing tank, a stirring reaction tank, a large-particle reactant forming tank and a waste sedimentation tank; an overflow plate is arranged at the upper part of the large-particle reactant forming pool, and a water lifting component is arranged at the lower part; a plurality of high-strength membrane pipes are arranged above the waste sedimentation tank, and a flushing water pipe is arranged between every two high-strength membrane pipes in a penetrating manner. The sewage treatment device has the beneficial effects that the electrolysis assembly and the flocculation reaction tank are arranged, wastewater is electrolyzed through the electrolysis assembly and then passes through the flocculation reaction tank, impurities in the water are separated out through reaction, and finally fully purified water is obtained; sludge and waste separated out of water can be discharged in time, secondary pollution of purified water is avoided, and therefore waste water purification can be completed more efficiently.

The invention discloses synthesis of a cup crown compound adsorption material and a method for deeply and selectively extracting indium from an acid complex system, and belongs to the technical field of non-ferrous metallurgy. According to the synthesis of the cup-crown compound adsorption material and the method for deeply and selectively extracting indium from the acid complex system, based on the pre-organizability and complementary molecular design principle of subject-object chemistry, a 15-crown-5 ether subunit is introduced into a calix [4] arene structure to form a cup-crown supramolecular compound; and furthermore, the material is loaded on the surface of SiO2 particles to form a stable adsorption material, so that deep selective separation and extraction of indium in an acidic complex system can be realized.

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.