235 results about "Magnetite" patented technology

The invention relates to the technical field of data analysis, in particular to a multi-source data-based concealed vanadium titano-magnetite bed target area delineation method and system, which comprehensively considers various factors possibly influencing drilling, such as geological condition complexity and drill bit wear risk, and has relatively low potential risks in various aspects of trajectory selection. The probability of unexpected conditions such as drill bit damage and borehole wall collapse in the drilling process can be effectively reduced, smooth drilling work is guaranteed, the drilling effect abnormity prediction result and the difficulty abnormity reflect the advantages and disadvantages of the drilling track from different angles, and the drilling efficiency is improved. The drilling effect anomaly prediction considers the influence of various abnormal conditions possibly occurring in the drilling process on the final drilling result, the difficulty anomaly focuses on the drilling difficulty of the trajectory, the two are fused and analyzed, the feasibility and the risk degree of each trajectory are evaluated more comprehensively and accurately, and the prediction accuracy is improved. And the influence degree of the track drilling process on ore deposit target area detection is reduced.

The invention discloses a sulfur-containing magnetite beneficiation method which specifically comprises the following steps: S1, raw material preparation: crushing sulfur-containing magnetite to obtain small-particle sulfur-containing magnetite; s2, physicochemical property determination: detecting the particle size of the small-particle sulfur-containing magnetite, the content of magnetite in the small-particle sulfur-containing magnetite and the content of sulfur minerals in the small-particle sulfur-containing magnetite; s3, magnetic separation: according to the physicochemical properties of the small-particle sulfur-containing magnetite detected in the step S2, automatically controlling the magnetic field intensity of a magnetic separation process through a controller, and carrying out magnetic separation to obtain magnetite and sulfur-containing ore; the magnetic field intensity of the magnetic separation process is dynamically adjusted according to the iron ore particle size of the sulfur-containing magnetite, the magnetite content in the sulfur-containing magnetite and the sulfur mineral content, the trends of iron minerals and sulfur minerals are accurately controlled, optimal adjustment of the element trends is achieved, and the recovery rate of iron and sulfur is increased.

The invention discloses a method for enhancing biological leaching of copper in a waste circuit board by utilizing magnetite. The method comprises the following steps: adding the pre-crushed waste circuit board and magnetite into a 9K culture medium with the pH value of 1.8-2.0 according to a certain mass ratio, inoculating Acidithiobacillus ferrooxidans as a leaching strain, and carrying out a leaching reaction under a constant-temperature oscillation condition. The magnetite is added, so that the leaching of copper in the circuit board is remarkably enhanced, the leaching rate is remarkably improved, and the leaching period is shortened. And compared with the microbiological leaching result without magnetite, the copper leaching rate is improved by 12-32%. By utilizing the difference between the circuit board and the magnetite in particle size, the magnetite can be recycled from the leaching residues through a physical separation means for a new round of leaching. The method is simple in process, the strain is easy to culture, and the method has good environmental friendliness and is suitable for green and efficient recovery of copper in the waste circuit board.

The invention discloses a Mars soil simulant performance evaluation method based on spectrum-mechanics combined characterization, which comprises the following steps: acquiring surface soil chemical components and physical and mechanical reference data of a target Mars area, taking basalt, magnetite and hematite as raw materials, solving the optimal mass ratio by adopting an optimization algorithm, and preparing a sample. Then, systematic spectrum characterization is carried out on the sample, and components and spectrum characteristic data of the sample are obtained; and meanwhile, carrying out physical and mechanical property test on the sample to obtain mechanical property data. Further, spectrum and component data serve as independent variables, mechanical data serve as dependent variables, an associated data set is constructed, the influence weight is analyzed, and a component-structure-performance quantitative relation is established. And finally, based on all the data and the internal association thereof, calculating the comprehensive similarity between the simulant and the real Mars soil, and generating a comprehensive performance evaluation report. According to the method, multi-dimensional and standardized quantitative evaluation of chemical, mineral and mechanical properties of the Mars soil simulants is realized.

The invention provides an oblique coil electromagnetic classificator for separating weak magnetic impurities from strong magnetic concentrate, which comprises a separation cylinder, an ore feeding device and a flushing device, an ore feeding pipe of the ore feeding device extends into the separation cylinder from the top end of the separation cylinder, the flushing device is arranged below the ore feeding pipe, and an oblique coil is arranged on the outer side of the separation cylinder, so that the weak magnetic impurities can be separated from the strong magnetic concentrate. Magnetic lines of force are obliquely distributed, magnetic linkages formed by magnetic particles are oblique, the whole magnetic linkages can be efficiently impacted in cooperation with vertical component force Fz of water flow of the flushing device, and scattering of magnetic aggregates is facilitated; the tail control flat coil and the concentrate gathering flat coil at the upper end and the lower end effectively control tailings and concentrates respectively, so that the separation efficiency of strong magnetic concentrates and weak magnetic impurities is improved, for example, in the iron-titanium separation operation of vanadium titano-magnetite ore dressing, ilmenite mixed into iron ore concentrates can be reduced, the grade of the iron ore concentrates can be improved, and titanium metal resources can be fully recycled.

The invention discloses a method for efficiently extracting iron from copper slag through non-molten hydrogen reduction, and belongs to the technical field of green resource utilization of metallurgical solid waste. Hydrogen is introduced to carry out reduction roasting on copper slag pellets, and a reduction auxiliary is added in a matched mode to dissociate fayalite in the copper slag; the purposes of strengthening the hydrogen reduction effect and improving the metal iron reduction rate are achieved, magnetite, fayalite and iron elements in other iron-containing silicate phases in the copper slag are reduced into metal iron, meanwhile, reduction products are treated through ore grinding and magnetic separation, and the iron ore concentrate grade is effectively improved. The method has the characteristics of simple reduction process and low carbon emission, and has high economic benefits.

The invention belongs to the technical field of vanadium titano-magnetite sintering, and particularly discloses a method for preparing high-alkalinity sinter from low-iron high-titanium high-vanadium magnetite. The method for preparing the sintered ore provided by the invention comprises the following steps: crushing low-iron high-titanium high-vanadium magnetite, sulfuric-acid slag, a flux and a carbon-containing fuel; 20-40 parts of low-iron, high-titanium and high-vanadium magnetite, 6-20 parts of sulfuric-acid slag, 8-24 parts of flux, 2-4 parts of carbon-containing fuel and 6-12 parts of return mine are blended, and a mixture is formed; and adding water into the mixture, granulating to obtain a ball material, and sintering to obtain the sintered ore. According to the method, the solid waste sulfuric-acid residue is added in the ore blending process, element regulation and control of the sintered material are achieved, and resource reutilization of the solid waste sulfuric-acid residue can also be achieved; a flux is added in the sintering process, and high-quality binder phase calcium ferrite is generated under lower alkalinity by regulating and controlling sintering alkalinity and element composition, so that the strength performance of the sintered ore is effectively improved.

The invention discloses a preparation method of a standardized sheet for a thermoelectric test of minerals or mineral materials and alloys, belongs to the technical field of mineralogy, material science and prospecting prediction, and establishes a preparation process of a universal mineral or mineral material and alloy thermoelectric sheet. Covering all semiconductor mineral types or mineral material types such as pyrite, magnetite, graphite and sintered ore; accurate thickness control is achieved through a double-face polishing-loading sheet supporting structure, in-situ testing of the thermoelectricity of minerals or mineral materials and alloys is achieved, and the testing precision is improved; by adopting a conductive adhesive-copper plate composite structure, the interface resistance is reduced, the supporting strength is met, and the requirement of eliminating detection interference is met; residual colloid is thoroughly removed through ultrasonic cleaning, and the insulation effect is avoided; according to the standardized sheet, the hollow aminated phenolic resin nanosphere is used as a conductive substrate and is used for bonding a sample and a copper plate, the contact resistance between the sample and an electrode can be greatly reduced, and the accuracy of test data is improved.

The magnetic separation column comprises an ore feeding hopper, a tailing overflow groove, a separation column body, an electromagnetic system, a concentrate opening and a water feeding pipe, the ore feeding hopper is arranged at the top of the separation column body, the lower portion of the separation column body is communicated with the separation column body, the tailing overflow groove is formed in the upper portion of the separation column body, the concentrate opening is formed in the bottom of the separation column body, and the electromagnetic system is arranged outside the separation column body in a sleeved mode. The water supply pipe is inserted into the lower part of the sorting column; the device is characterized by further comprising a magnetism gathering medium body, the magnetism gathering medium body is fixedly arranged in the separation column, and the top of the magnetism gathering medium body corresponds to the uppermost electromagnetic system. According to the utility model, the phenomenon that fine-particle magnetite moves upwards along with rising water flow and enters tailings to cause black running is effectively avoided, so that the recovery rate of iron ore concentrate is increased, and the grade of the tailings is reduced.

The invention discloses a magnetic separation, enrichment and recovery process for low-grade vanadium titano-magnetite, which belongs to the technical field of comprehensive utilization of vanadium titano-magnetite, adopts a combined mineral separation process of dry pre-enrichment and tailing discarding, wet grinding, concentration and refinement, combination of gravity and magnetism and middling retreatment, selects mature industrial equipment and optimizes the combination. High-efficiency dry pre-selection equipment, wet grinding equipment, a multi-section reselection and middling retreatment system and solid-liquid separation equipment are utilized, a large amount of tailings are discarded at the front end of a mine, iron and titanium are efficiently separated and comprehensively recycled in the middle main process, the recycling rate bottleneck is broken through through the middling retreatment technology, near-zero discharge of wastewater is achieved, and compared with a conventional process, water can be saved by 50-60%, and the economic benefit is high. According to the method, the grinding and separation cost is saved by 60-70%, the energy-saving effect is remarkable, the purposes of cost reduction, efficiency improvement, comprehensive utilization of resources and clean production are achieved, the production and technical problems of low-grade vanadium titano-magnetite mine enterprises in arid and water-deficient areas are effectively solved, and the method is suitable for large-scale production and application.

The invention relates to the technical field of beneficiation, and particularly provides a beneficiation process for tungsten-molybdenum ore with calcium and magnesium ions easy to separate out. According to the beneficiation process disclosed by the invention, the iron ore concentrate, the molybdenum sulfide concentrate and the tungsten molybdenum oxide concentrate can be comprehensively obtained by improving the magnetic separation process, the flotation reagent combination, the desliming, the ore washing and other operation procedures; the problem of loss of tungsten and molybdenum metal along with magnetic concentrate due to the existence of a large amount of magnetite-molybdenite and magnetite-tungsten-molybdenum oxide ore intergrowth of the ore is effectively solved, and the problem of low molybdenum sulfide flotation index due to mismatching of a sulfuration flotation process is solved; the core problem that a large number of calcium and magnesium ions are separated out and react with a fatty acid collecting agent to cause heating flotation failure is solved, the technical bottleneck troubling the type of mine for more than ten years is successfully overcome, and the tungsten and molybdenum resource comprehensive recovery competitiveness of related enterprises can be remarkably improved.

The utility model relates to the technical field of magnetite identification, and discloses a simple magnetite identification device which comprises a magnet, a storage mechanism is arranged outside the magnet, and a cleaning mechanism is arranged on the side wall of the magnet; the storage mechanism comprises a shell, the shell is arranged outside the magnet, a vertical rod is fixedly connected to the interior of the shell, a first rotating rod is rotatably connected to the exterior of the vertical rod, a second rotating rod is rotatably connected to the exterior of the vertical rod, a magnifying lens is fixedly connected to the bottom of the first rotating rod, and the bottom of the second rotating rod is fixedly connected to the top of the magnet. The first rotating rod is arranged on the top of the second rotating rod. According to the magnet identification device, dust attached to the surface of the magnet can be brushed away through the brush by holding the shell, the problem that the identification result is affected due to the fact that the device is single in structure, inconvenient to store and prone to being in contact with foreign objects to cause abrasion is solved, and through the structure, the magnet is convenient to store, and the multifunctionality of the identification device is improved.

The invention provides a vanadium titano-magnetite beneficiation method which comprises the following steps: carrying out dry screening after carrying out coarse crushing and medium crushing on vanadium titano-magnetite raw ore, and carrying out dry tailing discarding on dry screening undersize; carrying out ultrafine crushing on the concentrate subjected to dry type tailing discarding, and carrying out weak magnetic pre-concentration roughing and weak magnetic pre-concentration scavenging on the screen underflow; weak magnetic pre-separation roughing concentrate and weak magnetic pre-separation scavenging concentrate are combined and then subjected to first-stage grinding, and classified undersize products are subjected to first-stage weak magnetic roughing and first-stage weak magnetic scavenging; first-stage weak magnetic roughing concentrate and first-stage weak magnetic scavenging concentrate are combined and then enter second-stage ore grinding, and after screening, undersize products are subjected to second-stage weak magnetic roughing and second-stage weak magnetic scavenging; the second-section weak magnetic roughing concentrate and the second-section weak magnetic scavenging concentrate are combined and then subjected to third-section ore grinding, then quality-improving and impurity-reducing magnetic separation is conducted, the quality-improving and impurity-reducing magnetic separation concentrate is concentrated and filtered to obtain superfine iron ore concentrate, and the quality-improving and impurity-reducing magnetic separation tailings are treated to obtain superfine titanium concentrate; the method provided by the invention can realize comprehensive utilization of iron and titanium resources.

The utility model provides a magnetic separator with a special magnetic field, which comprises symmetrically arranged fixing plates, a containing pipe is arranged between the fixing plates, a plurality of magnets are arranged in the containing pipe at intervals, the magnets are connected through separation sheets, the magnets are arranged in an odd number, and the magnetic field is arranged in the containing pipe. The magnetic field directions of the magnets in the parallel accommodating pipes are opposite, so that the problems that an existing grid iron remover is diversified in form, the number and the arrangement mode of the magnetic rods are not limited because the magnetic rods arranged at intervals are mostly placed on a bracket, the iron removal operation is carried out through natural blanking of fluid, the mode is limited in magnetic force intensity, and the iron removal efficiency is low are solved. And after the demagnetizing operation is carried out, the adsorbed magnetic substances are difficult to clean.

The invention discloses a rare earth doped iron oxyhydroxide / ferric oxide-three-dimensional graphene composite material and a preparation method thereof, the material is x% RE-FeOOH / Fe2O3 (at) 3D Gr, x is the molar ratio of rare earth ions to iron ions, the value range of x is 1-8.5, RE is one of rare earth elements Ce, La, Sm, Nd or Y, and RE is one of rare earth elements Fe, La, Sm, Nd or Y; the preparation method comprises the following steps: preparing a mixed solution A from an iron salt, a rare earth salt and an alkaline solution, adding a complexing agent into a graphene oxide solution to prepare a mixed solution B, performing ultrasonic treatment on the two solutions, mixing, adding a reducing agent, performing ultrasonic treatment again, and finally performing hydrothermal treatment, washing, freeze drying and low-temperature sintering. Rare earth ions can induce oxygen vacancies, increase active sites and promote ion transmission, the maximum mass specific capacitance of the material under 0.5 A / g reaches 1218.7 F / g, and the maximum capacitance retention rate of a flexible supercapacitor assembled by the material is 97% after 5000 times of charging and discharging.

The invention discloses a comprehensive recovery method for valuable elements in vanadium titano-magnetite tailings, which comprises the following steps of: (1) dehydrating and concentrating the vanadium titano-magnetite tailings, settling sand, grading and grinding to obtain undersize minerals; (2) the undersize minerals are subjected to concentration dehydration and strong magnetic iron removal and titanium collection, and strong magnetic concentrate, strong magnetic tailings and concentrated overflow are obtained; (3) the strong magnetic concentrate obtained in the step (2) is subjected to gravity roughing, scavenging and concentration, and titanium fine powder is obtained; and (4) carrying out inclined plate desliming concentration on the strong magnetic tailings obtained in the step (2), adding an inhibitor and a collecting agent, and then carrying out flotation roughing, concentration and scavenging to finally obtain phosphorus concentrate powder. According to the method, effective separation of useful minerals and gangue can be ensured, the recovery rate of titanium and phosphorus is increased, the flotation effect is prevented from being affected by over-grinding caused by monomer phosphorus, the phosphorus grade before flotation is greatly improved, the treatment amount of flotation pulp is reduced, the process is simple and easy to implement, and comprehensive and efficient recycling of titanium and phosphorus elements is achieved.

The invention discloses a method for preparing oxidized pellets by grinding hematite powder for sintering in the technical field of ferrous metallurgy. The method comprises the following steps: (1) mixing hematite powder for sintering with an additive, and carrying out wet ball milling pretreatment to obtain hematite ore pulp; the additive comprises limestone and calcium humate; (2) the hematite ore pulp is subjected to filter pressing dehydration, and a fine hematite filter cake is obtained; (3) the fine hematite filter cake, magnetite fine powder, a binder and water are mixed for pelletizing, and green pellets are obtained; and (4) drying, preheating, roasting, soaking and cooling the green pellets in sequence to obtain finished oxidized pellets. Limestone and calcium humate are added in the wet grinding process, ore pulp dehydration is remarkably improved, a low-water-content uniform filter cake is obtained, follow-up pelletizing and roasting performance is considered, and a foundation is laid for stable preparation of high-quality oxidized pellets.

The application discloses a kind of nano biomagnetite extraction devices in marine sediments, including first container, second container, filter membrane and magnetic adsorption component;First container and second container are equipped with communicating port, and the communicating port of first container and the communicating port of second container are docked, to form detachable sealed communication part;Filter membrane is arranged in sealed communication part, and filter membrane is used to separate the internal space of first container and second container;Magnetic adsorption component includes magnet bar and protective sleeve, and protective sleeve is sleeved on the outside of magnet bar;First container is used to accommodate sediment suspension to be treated, and second container is used to accommodate magnetic adsorption component, and magnetic adsorption component is used to adsorb nano biomagnetite in sediment suspension that passes through filter membrane.Extraction device forms detachable sealed communication part by the docking of first container and second container, and filter membrane is arranged in communication part to realize space separation and particle size screening, and magnetic adsorption component with protective sleeve is matched to form directional adsorption structure.

The application discloses a kind of magnetic seed induced mineral separation methods of iron ore, comprising the following steps: (1) processing mixed iron ore obtains dry magnetic separation concentrate and dry magnetic separation tailings;(2) dry magnetic separation tailings magnetization roasting obtains artificial magnetite;(3) dry magnetic separation concentrate is mixed with artificial magnetite;(4) the raw ore into mill is sent into one-stage closed-circuit grinding classification system, then enters one-stage low-intensity magnetic separation operation;(5) one-stage low-intensity magnetic rough concentrate is sent into two-stage closed-circuit grinding classification system, then enters two-stage low-intensity magnetic roughing operation;(6) two-stage low-intensity magnetic roughing concentrate is demagnetized after entering two-stage low-intensity magnetic cleaning operation by demagnetizer;(7) two-stage low-intensity magnetic cleaning concentrate is concentrated after demagnetization by demagnetizer, and iron concentrate product is obtained by flotation.The application adds natural magnetite contained in ore into artificial magnetite, which is easy to form magnetic chain with natural magnetite as core to strengthen the magnetic separation recovery of artificial magnetite, and the separation process has high iron recovery rate and high concentrate grade.

Systems and methods for sequestering carbon, evolving hydrogen gas, producing iron oxide as magnetite, and producing magnesium carbonate as magnesite through sequential carbonation and serpentinization / hydration reactions involving processed olivine- and / or pyroxene-rich ores, as typically found in mafic and ultramafic igneous rock. Precious or scarce metals, such nickel, cobalt, chromium, rare earth elements, and others, may be concentrated in the remaining ore to facilitate their recovery from any gangue material.

The application provides a ceramic raw material iron red glaze and a preparation method thereof, and belongs to the technical field of inorganic material preparation. The ceramic raw material iron red glaze comprises the following components in parts by weight: 15.5-17.5 parts of potash feldspar, 22.5-23.5 parts of soda feldspar, 7-8 parts of white kaolin in Panxi region, 14-18 parts of quartz, 6-7 parts of calcite, 10-12 parts of calcined talc, 10-12 parts of bone powder and 14-16 parts of vanadium titanium magnetite. The bone powder comprises the following components in percentage by mass: 0.85-2.35% of SiO2, 0.36-0.74% of Al2O3, 44.56-46.75% of CaO, 0.76-1.50% of MgO, 0.03-0.12% of K2O, 0.53-0.86% of Na2O, 0.12-0.14% of Fe2O3, 0.03-0.05% of TiO2, 36.76-48.79% of P2O5, and the balance of inevitable impurities. The iron red glaze provided by the application is bright and dynamic, rich in changes, and has yellow silk-like flow lines interspersed in the sheet of fire red color, which is colorful and makes the whole vessel have the quality of being rare, noble and dignified. The application is mainly used for tea bowls, cups and other tea utensils, and can also be used for bowls, plates, toys, ink stones and other living utensils.

This invention discloses a process for the co-extraction of vanadium from vanadium-titanium magnetite and vanadium shale coal. The process employs a side-blown furnace, with a clarification and vanadium blowing device connected to the end of the furnace via a chute. The side-blown furnace has a feed inlet at the top of its first end and a flue at the top of its last end. Multiple straight nozzles are installed on both sides of the furnace. The process includes the following steps: S1, uniformly mixing vanadium-titanium magnetite and vanadium shale coal in a specific ratio; S2, adding the mixed mineral material through the feed inlet of the side-blown furnace, and injecting pulverized coal and oxygen-enriched feed into the furnace through the straight nozzles. High-temperature smelting is carried out using air and natural gas; S3, after the smelting reaction is completed, the melt is discharged into the sluice box through the side-blown furnace outlet and then into the clarification and blowing vanadium device; the side-blown furnace of this application suppresses the generation of by-products such as TiC during the smelting process by injecting natural gas, so that the metal reduction reaction can be fully carried out, realizing the continuous melting and metal reduction process of mixed vanadium-titanium magnetite and shale coal vanadium ore, breaking the defects of traditional multi-process step-by-step processing, shortening the blast furnace and non-blast furnace smelting process, and reducing equipment investment, operating costs and environmental impact.

The utility model belongs to the technical field of ore magnetic separation, and particularly relates to ore screening magnetic separation equipment which comprises a box body, a first filter plate is arranged in the box body, a conveying belt is further arranged in the box body, the first filter plate is obliquely arranged, and a reciprocating type driving piece is arranged between the first filter plate and the box body. A conveying motor for driving the conveying belt is installed outside the box body, the conveying belt is horizontally arranged and at least partially located under the first filter plate, and a magnetic plate fixed to the box body is arranged on the inner side of the end, away from the first filter plate, of the conveying belt; it can be understood that the inclined first filter plate is arranged in the box body and matched with the feeding port and the large particle outlet, automatic screening and discharging of large particle impurities are achieved, and continuous screening operation is supported; meanwhile, the separating part is arranged above the conveying belt and matched with the magnetic plate and the second filter plate, small particles and dust on the surfaces of the magnets can be efficiently separated under the condition that conveying is not affected, and impurities are fully removed.

The utility model discloses a press type magnetite grade measuring device, which belongs to the field of magnetite grade measuring devices, and comprises a support rod, a controller and a probe, the probe comprises a fixed machine body, an elastic ring, a diaphragm, a magnet, a tension sensor, a first assembly plate, a press machine body, an assembly ring, an air hole, a piston head, a spring, an ejector rod, a second assembly plate and a connecting line, compared with the prior art, the utility model has the following beneficial effects: by arranging the pressing type probe consisting of the fixed machine body and the pressing machine body, after the probe abuts against a detection position through the supporting rod, the pressing machine body can drive the magnet to be separated from the adsorption to the detected ore only by pressing the probe through the supporting rod, and at the moment, the tension sensor can obtain the value of the force during separation; the pressing type measurement is realized, the operation is simple and convenient, the phenomena of interference, winding and the like are avoided, the operation in a narrow space is facilitated, the measurement can be performed as long as the probe can extend into the position, the detection numerical value is not influenced by factors such as gravity during detection, and the accuracy is high.

1. The name of the design product: cover (the fourth generation of rust-proof king of magnetite). 2. The use of the design product: used as accessories of cookware. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: design 1 perspective view. 5. Design 1 is designated as the basic design.

The utility model discloses a sponge city rainwater buried all-in-one machine with multiple filtration, and relates to the technical field of rainwater buried all-in-one machines, the sponge city rainwater buried all-in-one machine comprises a main machine body and a filter box, the filter box is arranged on the right side in the main machine body, a liquid inlet is formed in the middle of the upper end of the filter box, and an anthracite frame is arranged at the upper end in the filter box; a manganese sand frame is arranged below the anthracite frame, a magnetite filter material frame is distributed below the manganese sand frame, a sponge iron filter material frame is installed below the magnetite filter material frame, a volcanic filter material frame is arranged below the sponge iron filter material frame, a fiber ball filter material frame is installed below the volcanic filter material frame, and a water guide pipe is connected to the exterior of the filter box. The front end of the water guide pipe is connected with a water pump, and the front end of the water pump is connected with a water storage tank. According to the sponge urban rainwater underground all-in-one machine with the multi-filtering function, rainwater can be subjected to multi-filtering through multiple filtering structures, and the overall practicability and the use efficiency of the rainwater underground all-in-one machine are improved.

The invention belongs to the technical field of ultra-lean magnetite powder separation, and particularly provides a multi-product dry separator and an ultra-lean magnetite powder separation process. The multi-product dry separator comprises a shell, an ore feeding opening, a belt magnetic separator and an air blowing mechanism, the belt magnetic separator and the ore feeding opening are formed in the upper middle portion of the shell, the belt magnetic separator is arranged on the lower middle portion of the shell, a magnetic roller of the belt magnetic separator is located at the discharging end of the belt magnetic separator, and the magnetic roller is located under the ore feeding opening. The ultra-lean magnetite powder separation process comprises the steps of ultra-fine crushing, dry separation, ore grinding, grading and magnetic separation. The multi-product dry separator has a grading function, so that a sieve does not need to be mounted; according to the ultra-lean magnetite powder separation process, fine grain collection products are directly separated out after the ultra-fine crushing process, the fine grain collection products do not enter the ore grinding process any more, energy is saved, and meanwhile the argillization phenomenon is reduced; in the whole treatment process, about 25% of materials are not subjected to ore grinding process treatment any more, and a large amount of energy can be saved.

The present application belongs to the technical field of metallurgical mine beneficiation, and is a low-sulfur lean magnetite desulfurization production process method. When mining and ore matching, 1) the assay of raw ore sulfur and concentrate sulfur needs to be increased in the ore sample of the mining site; 2) the upper limit of the sulfur content of the raw ore in mining and ore matching should not be higher than 0.12%; 3) the mining and ore matching indexes and their order are sulfur > selectability > grindability > MFe grade > dry separation tailing rejection rate; 4) the ore matching principle is: taking the grade as the core to match other indexes, and when the grade is qualified, the other indexes are calculated inversely, sampling points are added at the one-stage grinding classification and the final output concentrate in the stage grinding and stage separation process to master the sulfur index, if there is a phased anomaly, the mining adjustment and ore matching organization scheme or the emergency scheme is notified in time, and under the premise of ensuring the mining recovery rate, the product quality is qualified and the grinding efficiency is maximized, the final output sulfur content is realized below 0.05%, and the pollution of the sulfur content and the increase of the flotation desulfurization process to the environment is reduced.

The present application relates to the technical field of ore powder sorting, and particularly relates to a magnetite powder sorting device and a sorting method, and aims to solve the problem that the magnetite powder sorting device in the prior art is prone to ore powder loss during screening. The technical scheme is as follows: the device comprises a water storage tank and the like; a shell is fixedly connected to the water storage tank; a material collecting hopper is fixedly connected to the side of the water storage tank; a material throwing opening is formed in the bottom of the shell; a magnetic separation cylinder is rotatably connected to the shell; a support is fixedly connected to one side of the water storage tank; a primary selection mechanism for initially selecting the ore powder is arranged on the support; the primary selection mechanism comprises a screening barrel; and the screening barrel is fixedly connected to the support. The cooperation of the floating barrel and the sorting plate can realize the initial selection of the magnetic substances in the slurry while stirring the slurry, and the cooperation of the floating barrel and the oscillation assembly can further prevent the slurry from being deposited.

This invention belongs to the field of mineral processing, and particularly relates to a magnetic ore separation device based on a Hall sensor. A high-efficiency, low-energy-consumption, low-pollution, and high-accuracy magnetic ore separation device based on a Hall sensor includes a workbench; a conveying mechanism is installed on the top of the workbench, and the conveying mechanism has multiple conveying channels; an identification mechanism is installed inside the conveying mechanism and connected to the workbench, and the identification mechanism identifies the ore through the Hall effect; a material distribution mechanism is installed at one end of the workbench. This invention utilizes the fact that magnetite in the ore changes its magnetic induction intensity when passing through a constant magnetic field. This change is detected by the identification mechanism, and the control box automatically controls the material distribution mechanism to complete the pre-selection of magnetite by analyzing the information contained in the sensor signals within the identification mechanism in real time, achieving a high-efficiency, low-energy-consumption, low-pollution, and high-accuracy mineral processing effect.