160 results about "Iron removal" patented technology

The application discloses a method and a reaction device for synchronously and efficiently removing iron and organic matters, and belongs to the technical field of hydrometallurgy. The method comprises the following steps: taking a leaching solution of a zinc hydrometallurgy purification process, adjusting the pH by using a neutralizing agent a, maintaining the pH between 3.6-4.0, then conveying the solution to a leaching solution storage tank for preheating and stirring, after reaching a set temperature of 50-95 DEG C, injecting the solution into an iron removal reactor, adjusting the pH to be 4.0-5.0, introducing an oxidizing agent, controlling the flow rate to be 10-300 L / h, deeply removing the organic matters and iron ions in the solution, and after the reaction is finished, aging for 1-4 h, and then performing solid-liquid separation. The reaction device comprises a leaching solution storage tank, an iron removal reactor, an oxidizing agent supply system and the like. The application can efficiently and synchronously remove the iron ions and the organic matters in the solution, can greatly reduce the iron removal time, can reduce the catalyst and oxidizing agent consumption, has a good removal effect, and has a good application prospect.

This invention belongs to the field of magnetic separation technology, and in particular to a device for the coordinated mineralization and magnetic separation of iron in red mud. The lower inner side of the sand mill shell is provided with an arc-shaped concave cavity adapted to a cylindrical grinding rotor. The cylindrical grinding rotor is set in the arc-shaped concave cavity by rotation. Its outer cylindrical surface and the inner wall of the sand mill shell form a non-equidistant grinding chamber with left and right symmetry and a larger upper and smaller lower spacing. The minimum gap between the chambers is located in the bottom area of ​​the arc-shaped concave cavity. An overflow port is opened on the side wall of the sand mill shell in the downstream direction of the slurry flow path. A belt-type iron separator is used to magnetically separate the slurry discharged from the overflow port to remove iron. The slurry after magnetic separation is returned to the inside of the sand mill shell for circulation and re-grinding. The mixture after one grinding is subjected to preliminary magnetic separation to remove iron ore that can be magnetically adsorbed. Then the remaining mixture is circulated again. By diverting the iron-containing particles during the circulation process, it is ground to the target 1μm faster.

This utility model relates to the field of iron removal technology for raw materials, and discloses an iron removal device for quartz stone slab raw materials, including a box body. The top of the box body is provided with a feed inlet and the bottom with a discharge outlet. The box body is provided with an iron removal channel communicating with the feed inlet and the discharge outlet. It also includes multiple iron removal modules. The box body is provided with at least 4 pull-out parts, and the pull-out parts are arranged along the height direction of the box body. The multiple iron removal modules are connected to the pull-out parts and located in the iron removal channel. The iron removal modules on two adjacent pull-out parts are staggered, and in the horizontal projection, the iron removal modules on two adjacent pull-out parts completely block the iron removal channel. This utility model allows workers to easily pull out the iron removal modules through the pull-out parts, which is convenient for workers to carry out inspection and maintenance work, and pulling out one of them will not affect the overall iron removal work.

The application belongs to the technical field of lithium battery cathode material preparation, and relates to a method for recycling and preparing lithium manganese iron phosphate and the lithium manganese iron phosphate. First, recycled lithium iron phosphate black powder, a manganese source and deionized water are uniformly mixed according to a proportion, a precipitant is added in the process, the mixed slurry is filtered after synthesis is completed, and the filter cake is dried to obtain a solid product; the solid product is placed in a calcining furnace for first sintering to obtain a precursor 1; then the precursor 1 is mixed with a phosphorus source, a lithium source and a carbon source according to an element proportion, sand grinding and spray granulation are performed under deionized water as a solvent to obtain a precursor 2; the precursor 2 is placed in an atmosphere furnace for second sintering, and lithium manganese iron phosphate cathode material is obtained after crushing, screening and iron removal. The raw material of the application is recycled material, which is low in price and can reduce the recycling cost; the prepared lithium manganese iron phosphate material is excellent in processing and electrical performance, and the process and operation are easy to be industrialized for large-scale production.

The utility model discloses a kind of slurry iron removal devices for ruyao production, including slurry cylinder and supporting leg.The utility model is by adopting installation ring, cylinder, motor, when slurry is handled, it can be first added to hopper, and then make it slowly flow out, ensure that it can be contacted with magnet bar on installation ring in small amount multiple, and then guarantee impact stability and contact area stability, and magnet bar is alternately arranged on installation ring, can expand the operation range of magnet bar, facilitate more fully contact processing to slurry, and after slurry discharge is completed, installation ring can be driven to rotate and move up and down by the operation of cylinder and motor, and then the magnet bar on its surface can be contacted with slurry in different positions, so as to expand the overall contact area, facilitate more fully slurry iron removal, improve the overall iron removal quality, with the advantages of comprehensive iron removal, good iron removal effect, wide iron removal area.

The utility model discloses a kind of iron carbon black bulk loading devices, belong to carbon black loading technical field.A kind of iron carbon black bulk loading device, including the receiving hopper with receiving chute of material and screw elevator, the inlet of the screw elevator is located at receiving chute, and it includes: the driving motor is fixedly connected on the receiving hopper, the output end of the driving motor is connected with rotary disc, the rotary disc is connected with stirring roll, and the stirring roll is located in receiving hopper;Electromagnet in the stirring roll of the utility model continuously adsorbs iron in carbon black when stirring, moves to the rotating collection board place and automatically powers off and unloads iron, can realize continuous iron removal, effectively improves carbon black purity;Stirring roll can fully stir carbon black with rotary disc rotation, avoid accumulation and block receiving chute, guarantee smooth loading, improve conveying efficiency;Rotating collection board and U-shaped spring piece cooperate to automatically receive iron, baffle and counterweight can prevent carbon black from entering collection area, ensure that iron collection is pure, reduce material waste.

This invention discloses a raw waste sorting system and method for the coastal areas of West Africa, comprising: raw waste being transported by a loader or grab bucket to a chain conveyor loading section, and then entering a bar screen sorting section to obtain a first oversize and a first undersize; the first undersize sequentially entering a manual sorting section and a drum screen sorting section to obtain a second oversize and a second undersize; the second undersize, after iron removal, entering a tension screen sorting section to obtain a third oversize and a third undersize; and the second oversize entering a pneumatic sorting section to separate inorganic aggregates and lightweight materials. Addressing the characteristics of raw waste in the coastal areas of West Africa—high sand content, low moisture content, and a large amount of recyclables—this invention employs a multi-stage physical sorting method to effectively separate various resources from the raw waste, solving the problems of low efficiency and significant safety hazards associated with the local extensive manual sorting method.

This utility model relates to the field of boron carbide processing technology, specifically to an iron removal device for boron carbide processing. It mainly addresses the problems of iron falling off and poor iron removal due to excessive material falling speed, and proposes the following technical solution: It includes a feeding tray, which is equipped with a material unloading component. The unloading component includes a straight pipe connected to the surface of the feeding tray. A first suction stone is fixed to the inner wall of the straight pipe, and a unloading ball is inserted into the side of the first suction stone. A spiral pipe is connected to the bottom of the straight pipe, and the bottom of the first suction stone is aligned with the bottom of the spiral pipe. An iron removal component is fitted into the spiral pipe. This utility model, with the first suction stone on the inner wall of the straight pipe and the unloading ball inserted into the side of the first suction stone, can fully adsorb and remove iron from the boron carbide material while ensuring smooth falling, solving the problem of insufficient contact between the magnetic component and the material, and improving the efficiency of adsorption and impurity removal.

This invention discloses a remote real-time control system for ceramic membrane magnetic filtration based on the Internet of Things (IoT). The system comprises a sensing layer, an edge computing layer, a cloud control layer, a user interaction layer, and a modular access unit. The sensing layer, centered on a gradient field permanent magnet magnetic filtration module, integrates a Hall sensor array, an electromagnetic flowmeter, and a temperature sensor to collect key data such as magnetic saturation index, syrup flow rate, and liquid temperature in real time, achieving comprehensive perception of the ferromagnetic impurity capture status and raw material parameters. The gradient field permanent magnet magnetic filtration module is connected in series with the syrup delivery pipeline and includes a multi-stage detachable magnetic rod assembly, a Hall sensor array, a servo rotating sleeve, and a slag discharge channel. Compared to traditional iron removal equipment, this IoT-based remote real-time control system for ceramic membrane magnetic filtration is specifically designed for the characteristics of high-sugar, high-acid liquids. The gradient field magnetic circuit improves the capture efficiency, stably controlling the iron content below 0.3 ppm, effectively preventing product blackening, sedimentation, and a metallic taste.

The utility model discloses built-in infrared electromagnetic double magnetic pole electromagnetic iron remover, include: combination bearing frame, a pair of circular heavy load circuit connector and a pair of iron remover metal protective shell, the utility model relates to ore mining auxiliary equipment technical field, and this iron remover adopts bipolar magnetic pole design, and cooperate infrared sensor, can automatic regulation power according to the iron content of the iron impurity in the lower running mineral, both guarantee the iron removal efficiency, and avoid energy waste, compared with traditional hard structure suspension, this equipment changes the flexible suspension of special design, but unlike the shortcoming of conventional flexible suspension easy to shake, its unique triangle suspension under the mode of putting down makes the iron remover put down to the specified height without obvious shaking, and the operation is more stable, and the iron removal is more efficient.

This utility model discloses an overlapping double-roller iron removal pipe, including a conveying pipe, an iron removal pipe fixedly connected to the front of the conveying pipe, and two rotating rollers rotatably connected to each other inside the iron removal pipe. Magnetic rings are fixedly sleeved around the outer periphery of the rotating rollers. A dust feeding pipe is fixedly connected to both the conveying pipe and the iron removal pipe. A scraper and a distribution plate are fixedly connected to the inner wall of the iron removal pipe, with the scraper's side away from the inner wall of the iron removal pipe fitting against the outer wall of the magnetic ring. Iron outlets are opened on both sides of the iron removal pipe, with the lower edge of the distribution plate fitting against the lower edge of the iron outlets, and the upper edge of the distribution plate located below the rotating rollers. This utility model adopts an overlapping design, making it easy to directly install on existing aluminum ash conveying pipes without requiring large-scale modifications to the existing pipes, thus reducing modification costs and construction time. The double-roller structure, through continuous rotation, combined with the scraper, can quickly and effectively adsorb and remove iron filings and other metal impurities from aluminum ash, resulting in a significant iron removal effect.

The utility model relates to aluminum scrap removes iron technical field discloses a kind of aluminum scrap iron-removal devices, including rack, and fixed mounting is discharged in rack, and hot air drying assembly is fixedly installed at the discharge port of discharge hopper bottom end, and the discharge port of hot air drying assembly is installed with auger device, and the below of auger device output end is provided with primary removal device, and the below of primary removal device is provided with first iron impurity collection box;The right side of primary removal device is provided with secondary removal device, and the below of secondary removal device is provided with second iron impurity collection box, and the right side of secondary removal device is provided with conveying belt, and the right side below of conveying belt is provided with aluminum scrap collection box.In the utility model, by setting hot air drying assembly in the discharge port of discharge hopper, can effectively dry damp aluminum scrap, break down agglomeration, make scrap iron fully exposed, lay good foundation for subsequent iron-removal process, compared with traditional device, greatly improve the processing capacity to damp aluminum scrap.

The application provides a composite silicon powder and a preparation method and application thereof, and belongs to the technical field of fine chemical industry.The preparation method of the composite silicon powder comprises the following steps: crushing, acid pickling and impurity removal, drying and grinding quartz ore in sequence to obtain silicon powder, then performing first surface modification treatment on the silicon powder after magnetic separation and iron removal and a first coupling agent to obtain modified silicon powder; crushing, grinding and magnetic separation and iron removal are sequentially performed on the wollastonite raw ore to obtain wollastonite powder, then performing second surface modification treatment on the wollastonite powder and a second coupling agent to obtain modified wollastonite powder; and the modified silicon powder and the modified wollastonite powder are mixed to obtain the composite silicon powder.The application can effectively enhance the anti-cracking performance and cold-heat impact resistance of the pouring sealant by compounding the needle-shaped modified wollastonite powder and utilizing the stress transfer effect of the significant needle-shaped structure.

This utility model relates to the field of light calcium carbonate production technology, and discloses a device for removing impurities in light calcium carbonate production. The device includes an iron removal box, and further includes: inlet holes on both sides of the top of the iron removal box; an inlet box fixed to the top of the iron removal box; a first motor fixed to the top of the inlet box; a rotating rod bolted to the output shaft of the first motor; several stirring rods fixed around the surface of the rotating rod; several push plates fixed around the surface of the rotating rod; a fixed frame fixed inside the iron removal box, with several strong magnetic rods arranged on the inner side of the fixed frame; and a second motor fixed to the right side of the iron removal box, with a screw bolted to the output shaft of the second motor. The other end of the screw is rotatably connected to the interior of the iron removal box, and a threaded sleeve is threaded onto the surface of the screw. This utility model can disperse the light calcium carbonate after it falls into the inlet box, facilitating better subsequent iron removal.

The utility model relates to the related technical field of rubber powder processing, in particular to a waste tire rubber powder iron removal device which comprises an iron removal box, a lifting mechanism is arranged at one end of the iron removal box, and a vibration mechanism is arranged in the iron removal box. According to the waste tire rubber powder iron removal device, through the arrangement of the mounting base, the first motor, a rotating rod, a gear, a connecting frame, a sliding groove, a sliding block, a toothed rod, a lifting plate, a magnetic rod, a connecting block, a connecting ring, a supporting shell and a guide rod, during iron removal, the first motor enables the rotating rod to drive the gear to rotate, and the toothed rod connected with the gear in a meshed mode can drive the lifting plate to descend; by arranging a vibration mechanism, a second motor enables a rotating column to drive an eccentric block to rotate during iron removal work, at the moment, a movable frame drives a lifting block to do lifting motion through a connecting rod, a storage rack drives the rubber powder to vibrate, and the rubber powder can be conveyed to the magnetic rod to be conveyed to the iron removal box to be conveyed to the magnetic rod to be conveyed to the iron removal box to be conveyed to the iron removal box to be conveyed to the iron removal box to be conveyed to the iron removal box. And the contact between the rubber powder and the magnetic bar is improved.

The utility model relates to material transportation is with iron removal and divides material device, including transfer hopper, bidirectional belt conveyor, strong magnetic de-ironer and plate chain conveyor, the transfer hopper is used for storing material, its bottom is connected with the discharge pipe, and the discharge is aligned bidirectional belt conveyor's feed end, the strong magnetic de-ironer is installed in the top of bidirectional belt conveyor, is used for removing the iron impurity in material, the discharge end of bidirectional belt conveyor is connected with the feed end of plate chain conveyor, is used for conveying material to subsequent section, can form gradient magnetic field through the strong magnetic de-ironer and electromagnet bar array through the utility model, utilize the principle that ferromagnetic substance is stressed in the magnetic field, realizes the efficient removal of different particle size iron miscellaneous.

This invention relates to the field of railway iron removal equipment technology, specifically to an electromagnetic iron removal vehicle and method. The electromagnetic iron removal vehicle includes a vehicle body, a swing arm mechanism, an electromagnet, a collection box, and a battery box. The collection box and battery box are correspondingly mounted on the vehicle body. A collection port is provided on the top of the collection box. The battery box is electrically connected to the swing arm mechanism and the electromagnet. One end of the swing arm mechanism is connected to the vehicle body, and the other end is connected to the electromagnet. The swing arm mechanism can drive the electromagnet to rotate above the collection port. The collection box is equipped with a magnetic component so that the electromagnet can attract the magnetic component when energized, thereby moving the vehicle body. Based on the magnetic principle of the electromagnet, after the electromagnetic iron removal vehicle is energized, the electromagnet has an attraction function, which can propel the vehicle body to move, and the electromagnet can attract impurities such as iron wire and iron shavings. These magnetic materials fall naturally into the collection box after the electromagnet rotates and the power is cut off, completing the iron removal function.

The application relates to the technical field of refractory materials, and particularly discloses a hercynite-mullite solid solution raw material and a preparation method thereof. The preparation method of the hercynite-mullite solid solution raw material comprises the following steps: after low-grade high-iron bauxite is crushed and homogenized, the low-grade high-iron bauxite is subjected to a flotation desilication treatment; the ore slurry after the flotation is subjected to a magnetic separation and iron removal treatment, so that the content of Fe2O3 in the ore slurry is controlled to be below 9 wt%; a carbon source is introduced into the ore slurry after the magnetic separation and iron removal, the ore slurry is uniformly mixed, and then the ore slurry is subjected to drying, shaping and sintering in a carbon-embedded atmosphere, and the hercynite-mullite solid solution raw material is obtained. The application realizes high-value and high-quality utilization of the low-grade high-iron bauxite. Through the flotation desilication and magnetic separation and iron removal processes, the contents of SiO2 and Fe2O3 in the raw material are effectively controlled, the low-grade ore which is originally difficult to be directly utilized is converted into qualified refractory material raw material, and the resource utilization efficiency and economic value are greatly improved.

The utility model provides a kind of electromagnetic iron removal device for sintered brick production, including shell and pivot, rotatably being provided with mounting plate in shell, and mounting plate bottom is provided with electromagnet. The both ends of pivot are respectively penetrated through shell and electromagnet, and the bottom of pivot is provided with stirring assembly, and drive motor for driving pivot rotation is further provided on shell, and linkage assembly connected with pivot and electromagnet is provided on shell, and the rotation of pivot is converted into driving electromagnet reverse rotation by linkage assembly. The device can stir material when using, avoid iron material to be oppressed by material and cannot be attracted by electromagnet, effectively improve the efficiency of adsorbing iron material, reduce the power of electromagnet. And it can also avoid that too much material is adsorbed on local position of electromagnet, which affects its adsorption effect, further improve the iron removal efficiency.

This invention discloses a method and application for producing ceramics using low-temperature sintering of iron removal waste residue, belonging to the field of ceramic product manufacturing technology. The method includes the following steps: (1) Mixing: Iron removal waste residue from the ceramic production process is added to the ceramic raw materials as a sintering aid, mixed evenly, and performance additives and dispersants are added to obtain a mixture; wherein, the amount of iron removal waste residue added is 2-4 wt.% of the total mass of the ceramic raw materials; (2) Molding: The mixture obtained in step (1) is aged under vacuum for 18-24 hours, and then pressed into shape to obtain a ceramic green body for later use; (3) Sintering: The ceramic green body obtained in step (2) is sintered at a temperature of 1060-1100℃ to obtain ceramic products. The method of this invention can be applied in the production of building ceramics or industrial ceramics. This invention has the characteristics of achieving low-temperature sintering of ceramics, and the temperature reduction of 40-80℃ compared with the traditional sintering temperature, resulting in energy saving and consumption reduction.

This invention relates to the field of lithium-ion battery technology, specifically to a method for recycling aluminum metal from high-aluminum cathode material black powder in waste lithium batteries. The method includes: dry mixing the black powder with anhydrous sodium sulfate, acidifying with concentrated sulfuric acid, spraying with an aqueous sodium sulfate solution and adding sodium bisulfate monohydrate to obtain a pretreated material; after staged acidification and roasting, lithium is extracted by water leaching; the water leaching residue is leached under low-acid conditions; the low-acid leachate is precipitated with sodium fluoride to obtain cryolite; the post-aluminum precipitate is then treated with iron removal and pH adjustment to prepare a nickel-cobalt-manganese extraction pre-liquid. This invention, by controlling the distribution of sulfate ions on the aluminum surface and staged roasting, reduces the gas production and aluminum load during low-acid leaching, combined with the directional precipitation of aluminum using low-pH cryolite. This achieves efficient lithium recovery while significantly reducing the loss of nickel, cobalt, and manganese with the aluminum slag. Aluminum is recovered in the form of cryolite for high-value recovery, greatly improving resource utilization and process safety.

This utility model belongs to the technical field of iron removal equipment, and particularly relates to an electrolyte crushing material iron removal system. It includes a housing with a feed inlet at the top. Inside the housing is a magnetic roller mounted on a central shaft. Above the magnetic roller is a first blowing device, which includes a first blowing box arranged along the length of the magnetic roller. The first blowing box has a first air inlet, and the bottom side of the first blowing box has two sets of first and second air outlets at fixed angles. The first and second air outlets are inclined towards the surface of the magnetic roller. When the magnetic roller rotates, the iron material carried out by the magnetic roller is blown off, preventing the removed iron from being mixed into the material again, thus improving the iron removal effect. The second air outlet is also inclined towards the surface of the magnetic roller, intersecting with the material falling direction, which can form a barrier during material falling, preventing powder from entering the iron recovery area and causing material waste.

The present application relates to a kind of waste incineration power plant boiler fixed discharge water high-temperature purification reuse method and system, the method includes the following steps: S1, fixed discharge water is sent into high-temperature buffer regulating and storing unit and is balanced water quantity fluctuation and preliminary sedimentation;S2, fixed discharge water in high-temperature buffer regulating and storing unit is sent into high-temperature iron removal filter unit and is iron removal filtration;S3, the fixed discharge water after filtering of high-temperature iron removal filter unit is sent into waste heat recovery cooling unit and is heat exchange, waste heat recovery cooling unit cold side feedwater heat exchange after being sent into boiler deaerator and / or feedwater system;S4, the fixed discharge water after heat exchange is sent into intermediate storage unit to balance water quantity fluctuation;S5, the fixed discharge water in intermediate storage unit is sent into depth desalination unit and is depth desalination, and the water production of depth desalination unit is sent into boiler and / or directly into boiler deaerator after being treated by chemical water treatment.The present application can realize the high-temperature iron removal of fixed discharge water, waste heat recovery, depth desalination and same level reuse.

The present application relates to the technical field of slurry iron removal equipment, and discloses a parallel electromagnetic iron remover and a slurry iron removal method, which comprise a shell and further comprise electromagnetic iron removal units, at least two groups of the electromagnetic iron removal units being arranged in parallel in the shell; the electromagnetic iron removal units can be switched between an iron removal working state and a cleaning or standby state, so that the system can realize continuous operation without shutdown through rotation of the working states of different units. Through rotation of the working and cleaning, uninterrupted operation of the system is realized, and the system does not need to be shut down for maintenance in the daily operation state, so that the production efficiency is greatly improved; the number of the electromagnetic iron removal units is adjustable, and part of the electromagnetic iron removal units can be started according to the actual processing capacity or full-load operation is realized; during cleaning, the independent electromagnetic iron removal units are disconnected from the operation state, so that the total energy consumption and operation heat of the system are reduced, and the service life of core components of the iron remover is prolonged. The multiple groups of electromagnetic iron removal units are integrated in parallel in one shell, the pipeline layout is regular, and the structure is compact.

The utility model relates to the technical field of iron removal of thermal power plant, concretely relates to floor track type iron remover, and the device includes belt feeder cylinder and iron remover frame, and the lower part of iron remover frame is equipped with walking platform, and the lower part of walking platform is equipped with the iron remover walking track for the movement of walking platform, and the iron remover walking track is arranged on the ground, and the inside of iron remover frame is equipped with iron remover body, and the just above of belt feeder cylinder is equipped with the electric hoist that coordinates with it, and the walking track of electric hoist is fixedly installed on the building top civil engineering beam, the utility model solves the space interference problem of iron remover track and electric hoist track, improves the overhauling efficiency, reduces the potential safety hazard, makes the structure simplify, reduces the construction cost, can adapt to different factory building space or different conveyer layout.

The utility model provides a set of nickel sulfate drying system for battery, and the feeding platform is put into raw material from the feed inlet of the stock bin, the stock bin is the bucket shape, concentrates to the feeding of the unloading valve, and the sulfurization bed dryer dries the raw material, and the material fluidization is promoted by mechanical vibration in the process, and the raw material after fluidization passes through the iron remover, and the metal impurities are removed, and the iron in the raw material is guaranteed to be not higher than 0.001%, the magnetic foreign matter (MI) content is small higher than 0.00001%, and the raw material after the iron removal is conveyed to the feeding end of the vibrating screen through the conveying device, the vibrating screen sieves different granularity materials through multilayer different mesh screen, and the next step deep processing is carried out according to the granularity, the raw material with the granularity between 8 mesh-20 mesh obtained through the first unloading port and the second unloading port is used as the product, the raw material with the granularity between 20-32 mesh obtained through the third unloading port is used as the crystal seed, and the raw material with the granularity below 32 mesh obtained through the fourth unloading port is used as the fabric, and the storage device is arranged in each unloading port.

This invention discloses a dynamic iron removal filtration device, comprising a top-sealed cylindrical cavity, a cylindrical filter, a cleaning device, and a driving device. Both the filter and cleaning devices are housed within the cylindrical cavity. A positioning rod is positioned along the central axis of the filter. The driving device includes a motor, an external magnetic coupling assembly, and an internal magnetic coupling plate. The external magnetic coupling assembly is positioned above the cylindrical cavity and driven by the motor. A gap exists between the external magnetic coupling assembly and the top of the cylindrical cavity. The internal magnetic coupling plate is positioned within the cylindrical cavity, and the attractive force between the external magnetic coupling assembly and the internal magnetic coupling plate is greater than or equal to the weight of the internal magnetic coupling plate. The cleaning device is driven by the internal magnetic coupling plate and can rotate around the positioning rod. This invention overcomes the problems of filter clogging and slurry leakage or contamination within the cylindrical cavity in existing technologies.

This invention discloses a process for preparing blast furnace pulverized coal injection with improved combustion performance, relating to the field of blast furnace pulverized coal injection technology. It includes constructing a blast furnace pulverized coal injection preparation system. At least two different types of raw coal are screened and iron-removed separately. This invention solves the problems of poor combustion performance, large moisture fluctuations, and coarse particle size control in existing technologies by setting up a raw coal pretreatment terminal, equipment control port, integrated processing management port, and automated control port. The addition of the blast furnace pulverized coal injection preparation system allows staff to view and manage the overall preparation process anytime, anywhere, enabling precise control of each step. It also allows for the management, visualization, and storage of blast furnace pulverized coal injection preparation data and corresponding analysis results, facilitating the management of blast furnace pulverized coal injection through internet cloud control and improving the level of intelligence in blast furnace pulverized coal injection management.

The application belongs to the technical field of fiber preparation, and particularly relates to a modified basalt fiber YB-2400 and a preparation method thereof, which comprises the following steps: basalt raw material crushing and screening, blending with silicate glass, modification after removing iron oxides through high-temperature reduction and magnetic separation, high-temperature melting in a melting pool, homogenization in a homogenization pool, high-speed wire drawing, and surface infiltration treatment; the basalt particles, silicate fiber powder and modifiers are arranged in the raw material, and iron removal treatment, homogenization treatment, high-speed wire drawing, surface infiltration and other treatment steps are arranged, so that the iron oxides are effectively removed; in combination with blending modification and surface treatment, the mechanical strength, elastic modulus, toughness and corrosion resistance of the basalt fiber are significantly improved; the preparation process is simple and can be continuously produced, and the cost is controllable; the modified continuous basalt fiber prepared by the application has excellent performance, can be widely applied to high-end building materials, automobile parts, corrosion-resistant pipes, special composite materials and other fields, and has good industrialization popularization prospect.

This invention relates to the interdisciplinary fields of environmental engineering, solid waste resource utilization, and advanced functional materials technology, specifically to a method for targeted recovery of heavy metals from municipal sewage sludge. The method discloses a method for targeted recovery of heavy metals from municipal sewage sludge. First, a magnetic nanomaterial with a hydrophilic brush layer and a surface ion-imprinted layer is prepared. Then, the sludge is acid-dissolved to obtain a leachate, and the material is added to selectively adsorb the target heavy metals. After magnetic separation, desorption is performed using a low-voltage pulsed electric field. Finally, the desorbate is purified by iron removal, and high-purity copper is recovered by constant-potential electrodeposition. This invention achieves highly selective capture and recovery of heavy metals in complex systems, and the material is recyclable, possessing good industrial application prospects.