64 results about "Magnetic minerals" patented technology

The invention discloses a method for preparing high-purity quartz and recovering an iron element based on high-silicon tailings, and belongs to the technical field of comprehensive utilization of resources and preparation of high-purity quartz. According to the method, high-silicon tailings are sequentially subjected to mineral dissociation, low-magnetic-field roughing, high-magnetic-field scavenging, flotation and ultrasonic acid leaching treatment, and refined quartz is obtained; and carrying out multi-stage gradient chloridizing roasting and hot-pressing acid leaching treatment on the refined quartz of which the gas-liquid inclusion index and transparency meet the requirements to finally prepare the high-purity quartz of which the SiO2 purity is greater than or equal to 99.995%. In addition, for strong magnetic minerals generated in the magnetic separation process, the iron content of the strong magnetic minerals reaches the standard, the strong magnetic minerals react with the acid leaching filtrate under the ultrasonic strengthening condition to leach iron ions, and iron-rich filtrate is subjected to an iron precipitation reaction to generate iron carbonyl. The method provided by the invention not only provides a reliable judgment basis and a complete technical route for preparing high-purity quartz from the high-silicon tailings, but also opens up a new way for resource utilization of the tailings, and has remarkable industrial application value and environmental benefits.

The application discloses a kind of weak magnetic mineral separation methods of magnetic seed circulating reinforced flocculation magnetic separation, raw material is broken to grinding ore to the fineness of-75µm content 60%-90%, ore powder is configured into ore pulp, 100-400 grams / ton of magnetic seed is added to ore pulp, at the speed of 700-1500rpm Realize selective flocculation, and the flocculation of ore pulp is given to high gradient magnetic separator, under the action of magnetic force, surface attachment magnetic seed's manganese mineral flocculation is selectively adsorbed to the surface of magnetic separation drum, and is collected after scraping plate, and it is manganese concentrate, and non-magnetic or weak magnetic gangue mineral is discharged as tailings with ore pulp flow, and high-grade manganese minerals are efficiently separated by using permanent magnet cylinder type magnetic separator to process manganese-loaded magnetic seed.The present application solves the problems of low recovery rate, complex process, poor recovery effect of micro-fine particles and high environmental risk faced by the current industry, significantly improves the manganese recovery rate and concentrate grade, and realizes the maximum utilization of manganese resources in tailings.

The present application relates to the technical field of ore recovery, and particularly relates to a comprehensive recovery and utilization method of complex associated magnetite, which comprises a pretreatment stage, a sulfur tailing reinforced recovery and a desulfurization flotation operation. The magnetic roller separation device designed by the gradient magnetic field realizes effective separation of magnetic minerals and sulfur-containing minerals, and the two-stage wet magnetic separation equipment is used to improve the recovery rate of magnetic minerals, and then the sulfur content of the iron concentrate is reduced by optimizing the reagent adding mode and the flotation conditions. The present application can significantly reduce resource waste, reduce energy consumption and environmental pollution, and provides a green and efficient comprehensive recovery and utilization solution for complex associated magnetite.

The utility model relates to the technical field of ore magnetic separation, and discloses a dry drum-type ore magnetic separator which comprises a magnetic separator main body, a belt conveying device is arranged at the bottom of the magnetic separator main body, and a driving motor is fixedly connected to the top of the magnetic separator main body. According to the automatic sorting machine, the magnetic roller can automatically move to the position below the magnetic roller to carry out sorting work, then in the rotating process of the cam disc, the operation is repeated, so that the discharging plate rotates, the discharging port of the discharging plate does not coincide with the discharging port of the discharging partition plate, discharging work is stopped, then the discharging plate continues to rotate, and when the discharging ports coincide, discharging work is achieved again; and therefore, the device can control the discharging speed and the discharging amount, excessive material accumulation in the magnetic separator during continuous feeding is avoided, effective separation of magnetic minerals and non-magnetic minerals is prevented from being affected, and the separation effect of the magnetic separator is improved.

The utility model discloses a sorting device. The sorting device comprises a feeding part, a first collecting part, a second collecting part, a winnowing part and a magnetic separation part, the feeding part is used for inputting sorting samples, and the sorting samples fall from the discharging end of the feeding part to form a falling path; at least part of the second collecting piece is located on the falling path, the first collecting piece is located on one side of the falling path, and the second collecting piece is arranged below the first collecting piece in the vertical direction; the winnowing piece is arranged on one side, deviating from the first collecting piece, of the falling path, and is used for blowing light sand minerals in the sorted samples into the first collecting piece; and the magnetic separation piece is arranged below the second collection piece and is used for adsorbing magnetic minerals in the separated samples into the second collection piece through the magnetic force of the magnetic separation piece.

The invention relates to the technical field of tailing recovery, and discloses a down-flow groove body drum type tailing recovery machine which comprises a rack, a motor, a permanent magnetic drum, a groove body, a flow guide plate and an output port and is used for separating and screening magnetic minerals in tailing slurry, and a balance compensation module comprises a pair of calibration plates and two pairs of floating ball rods. Every two floating ball rods are slidably connected to the middles of the two ends of the calibration plate, a displacement power source in the vertical direction is provided for the floating ball rods by means of liquid level buoyancy of tailing slurry capacity change in the rack, vertical cylinders are fixedly connected to the positions, located on the outer walls of the floating ball rods, of the two sides of the top of the calibration plate, and the outer walls of the floating ball rods are slidably connected to the inner walls of the vertical cylinders. Liquid level fluctuation interference is reduced, and the displacement stability of the floating ball rod in the vertical direction is guaranteed; through fluctuation change of the separation liquid level, the lifting partition plate reversely moves along with the change of the separation liquid level, the liquid level height of the ore pulp separation area is adjusted, the separation contact range between the permanent magnetic roller and ore pulp is dynamically matched, and it is guaranteed that magnetic mineral separation and screening are sufficient and stable.

The invention relates to the technical field of metallurgical solid waste resource utilization, in particular to a method for enriching iron in vanadium extraction tailings and spiral separation equipment, and the method comprises the following steps: pretreatment, crushing and screening: feeding the vanadium extraction tailings into a jaw crusher for coarse crushing until the particle size is less than or equal to 50mm; the particle size of a crushed product is controlled to be smaller than or equal to 10 mm, the fine crushed product is screened through a linear vibrating screen, the size of a screen hole is 2 mm, oversize products return to the impact crusher to be crushed again, undersize products enter the next step, large gangue and impurities in the tailings can be removed in the step, and energy consumption is reduced for follow-up ore grinding operation. The combined technological process of pretreatment, magnetic separation roughing, spiral gravity separation and magnetic separation concentration is adopted, strong magnetic minerals are rapidly recovered through magnetic separation, then spiral gravity separation is adopted for weak magnetic and intergrowth minerals, the advantages of different separation technologies are fully played, and the problem that the recovery rate of the weak magnetic minerals such as hematite is low through a single magnetic separation method is solved.

The utility model belongs to the technical field of ore magnetic separation, and particularly relates to a dry magnetic separator for garnet tailings, which comprises a conveyor, side supports are fixedly connected to two sides of a conveyor frame respectively, a plurality of openings are formed in the surfaces of the side supports, magnetic separation assemblies are mounted in the openings, and the magnetic separation assemblies are fixedly connected with the conveyor frame. The magnetic separation assembly comprises a first rotating disc and a second rotating disc which are symmetrically distributed in the conveying direction of the conveyor, the first rotating disc and the second rotating disc are rotationally connected with the two openings correspondingly, and two magnetic separation cylinders are arranged on the opposite sides of the first rotating disc and the second rotating disc from top to bottom in a penetrating mode correspondingly; the magnetic ore grains in the mineral aggregate are adsorbed through rotation of the adsorption barrels, and the adsorption barrels are switched when more magnetic ore grains are adsorbed on the surfaces of the adsorption barrels, so that the magnetic ore grains adsorbed on the surfaces of the adsorption barrels can be cleaned in a non-stop state.

The application discloses a beneficiation method of low-grade tin ore by using magnetic separation and flotation. The beneficiation method of low-grade tin ore by using magnetic separation and flotation comprises the following steps: step (1), crushing and grinding the low-grade tin ore, using water as a leaching agent, and separating by a wet magnetic separator to obtain magnetic minerals and magnetic tailings; step (2), drying the magnetic tailings after the magnetic separation, and then placing the tailings in a flotation agent to perform a flotation treatment to obtain flotation minerals and flotation tailings; step (3), concentrating the flotation tailings after the flotation treatment to obtain concentrated tailings; and step (4), smelting the concentrated tailings to finally obtain tin metal, sulfide, silicate, oxide and impurities. The application combines the magnetic separation and the flotation to improve the ore separation efficiency and the recovery rate, the water is used as a leaching liquid in the magnetic separation process to reduce the cost, and no new impurities are introduced, and the flotation agent can reduce the surface tension of the tin ore to improve the leaching rate.

The invention relates to the technical field of tailing treatment, in particular to tailing washing equipment for mine beneficiation, which comprises a rack and a spiral chute, the spiral chute is vertically arranged on the rack, a top plate of the rack is communicated with a blanking pipe, and the blanking pipe leads to the top of the spiral chute; the magnetic separation device further comprises a magnetic separation pipe obliquely installed on the top of the rack, a first material pipe is vertically arranged at the bottom of the pipe wall of the lower section of the magnetic separation pipe and fixedly communicated with the discharging pipe, a feeding connector is vertically arranged at the position, close to the top of the pipe wall of the upper section, of the middle section of the magnetic separation pipe, and the feeding connector is communicated with a feeding pipe in a butt joint mode. The feeding pipe is used for adding ore pulp to be washed into the magnetic separation pipe. Magnetic separation and spiral chute reselection are combined, magnetic ore pulp is separated through a strong magnetic column, then density layering washing separation is conducted on non-magnetic ore pulp, efficient, continuous and fine separation of magnetic and non-magnetic minerals is achieved, and the separation efficiency and the recovery rate are remarkably improved.

The application discloses a method for recovering lithium concentrate from lithium-containing ores. The method comprises the following steps: adopting a SABC crushing and grinding system to perform crushing and grinding treatment on the lithium-containing ores to obtain material with a particle size of no more than 0.25 mm; performing first magnetic separation treatment on the material to obtain first magnetic minerals and first non-magnetic minerals; performing gravity separation treatment on the first non-magnetic minerals to obtain gravity separation non-lithium concentrate and gravity separation tailings, wherein the gravity separation treatment comprises in-sequence cloth apron chute treatment and table treatment; performing desliming classification treatment on the gravity separation tailings to obtain ore sand and ore slime; and performing flotation treatment on the ore sand to obtain lithium concentrate. The method not only has simple production process and low production cost, but also is beneficial to improving the recovery rate of lithium-containing ores, especially super-low-grade lithium-containing ores, and the grade of lithium concentrate, effectively enhancing the resource comprehensive utilization rate and the anti-risk response capability, activating the difficult-to-mine dead ores, and realizing full resource utilization of low-grade lithium-containing ores.

The utility model discloses an automatic ore discharge de-ironing separator for mining, which comprises a frame body and a fixed frame, a conveyor belt is arranged in the frame body, the frame body penetrates through the fixed frame, a sliding plate is arranged in the fixed frame, first sliding chutes are arranged on both sides of the fixed frame, the sliding plate moves along the groove direction of the first sliding chutes, and the first sliding chutes are arranged on the fixed frame. A lead screw is rotationally connected into the fixing frame, the lead screw penetrates through the sliding plate and is in threaded connection with the sliding plate, a motor is fixedly connected to the top of the fixing frame, and one end of an output shaft of the motor penetrates through the fixing frame and is fixed to the lead screw. According to the iron remover, the distance between the magnetic ring and the conveying belt can be changed, so that iron ore or magnetic minerals can be better adsorbed and removed, the screening effect of iron impurities or magnetic minerals is improved, the adsorbed iron impurities or magnetic minerals can be conveniently separated from the magnetic ring, the use convenience of the iron remover is improved, and the iron remover is suitable for popularization and application. And workers can conveniently collect discharged iron impurities or magnetic minerals.

The application discloses a deep-sea turbidity current in-situ monitoring device with a magnetic detection function, which comprises a glass cover, wherein an excess pore pressure monitoring assembly is fixedly connected in the glass cover, the upper and lower ends of the excess pore pressure monitoring assembly are extended out of the glass cover, a buried-prevention support is fixedly connected to the bottom of the glass cover, and an information processing assembly is fixedly sleeved outside the excess pore pressure monitoring assembly. The magnetic flux gate is arranged at the collection inlet of the non-magnetic turbidity current collector, and the installation structure close to the magnetic flux gate is made of non-magnetic engineering plastic, so that the influence of the device structure on the magnetic field detection result is reduced. When the turbidity current event occurs, the device continuously records the relative change trend of the total magnetic field intensity of the monitoring point, and correlates the abnormal change of the magnetic signal with the monitoring data such as flow velocity, excess pore pressure and turbidity in time sequence, so that whether the turbidity current carries high-concentration magnetic minerals is judged, and an integrated observation scheme is provided for the turbidity current movement process and the magnetic mineral transportation research.

The invention relates to the technical field of miners, in particular to an efficient magnetic separation device for iron ore production, which comprises a water guide pipe inserted on one side of a water outlet pipe in a penetrating manner, a flushing pipe is mounted at the bottom end of the water guide pipe and consists of a plurality of small-aperture conical nozzles, and flexible baffles are arranged on two sides of the outside of the flushing pipe. The flexible baffle is used for concentrating water flow and improving the flushing capacity, the flushing assembly is arranged, a water diversion pipe of the flushing assembly introduces a high-pressure water source, clustered high-pressure water flow is sprayed out through a flushing pipe composed of a plurality of small-aperture conical nozzles, a circulation channel can be flushed in time, and manual shutdown cleaning is not needed; the problem that discharging of the non-magnetic mineral end of an existing magnetic separation device is easy to block is solved, the flexible baffles arranged on the two sides of the outer portion of the flushing pipe can effectively concentrate water flow and prevent high-pressure water from being splashed towards the two sides ineffectively, the impact force of unit water flow is remarkably improved, and then the timely flushing efficiency is improved.

A method for extracting a rare earth from a rare earth sample using magnetic-based concentration and separation of an ore containing a selected rare earth from a lanthanide series of elements. The method steps include selecting and grinding a rare earth sample into particle size from the lanthanide series of elements, treating the rare earth sample to variable weak electromagnets, treating the rare earth sample to a variable strong electromagnets and separating non-magnetic minerals. Then heating the rare earth sample in a thermal decomposition oven and then treating the rare earth sample to second variable strong electromagnets for a magnetic gradient ion exchange fixed bed separation. Finally, creating high grade rare earth oxides for further production of rare earth contained products.

The invention discloses a shaking table capable of performing magnetic separation, which relates to the technical field of preparation equipment and comprises a mounting mechanism, an angle adjusting mechanism and a reciprocating mechanism, a concentrating flux plate is arranged below the bed plate, an ore feeding groove is formed in the upper right portion of the top end of the bed plate, a water feeding groove is formed in the position, parallel to the ore feeding groove, of the top end of the bed plate, a fine selection area is arranged on the left side of the top end of the bed plate, a re-selection area is arranged on one side of the middle of the top end of the bed plate, and a rough selection area is arranged on the side, located on the re-selection area, of the top end of the bed plate. An electromagnetic field is added in an original compound force field, so that mineral particles are zoned on a bed surface according to density and granularity when facing magnetic minerals, secondary separation is carried out according to magnetism, and minerals with similar density and different magnetisms can be effectively separated.

The invention relates to the technical field of solid waste recycling, and discloses a method for preparing a water purifying agent from lithium extraction tailings and the prepared water purifying agent, quartz, feldspar and magnetic minerals are separated by a physical separation method through an impurity removal and extraction technology of selective purification, activated calcination, acid leaching polymerization and composite blending, and an iron-containing clay phase is reserved; the PAC-PPS-porous silica gel composite system water purifying agent with an efficient water purifying effect is obtained by calcining and activating kaolin, removing hydroxyl and converting into metakaolin, carrying out controllable acid leaching to avoid excessive purification of iron ions, and finally, carrying out composite blending to obtain the PAC-PPS-porous silica gel composite system water purifying agent with an efficient water purifying effect. According to the method, the lithium extraction tailings are creatively used as the raw material, and the iron-containing ore phase and the iron element are reserved as far as possible, so that the flocculation capacity of the water purifying agent is improved, and the water purifying effect is improved; amorphous silicon dioxide filter residues and polymeric ferric sulfate are added step by step, the pH is adjusted in stages, and PAC, PFS and amorphous silicon dioxide are compounded for use, so that the water purification effect of the water purifier is further enhanced.

The utility model provides a mine vibrating magnetic separator, which relates to the technical field of mine magnetic separators and comprises a screen frame, a screen cover mounted at the top of the screen frame, a blanking hopper mounted on one side of the top of the screen cover, a material screening cavity formed in the screen cover and communicated with the blanking hopper, and a magnetic separation component arranged in the material screening cavity. According to the mine vibration type magnetic separator, magnetic minerals mixed in ores can be magnetically separated through the magnetic separation assembly, so that the magnetic minerals can be magnetically fixed on the magnetic separation rod, the magnetic separation efficiency of the magnetic minerals in the ores can be improved, and the problem that the recovery rate of the magnetic minerals in an existing magnetic separator is low is solved; and the magnetic separation rods can be conveniently detached and taken out from the interior of the screening cavity through the detaching assembly, magnetic minerals magnetically attracted and fixed by the magnetic separation rods can be cleaned up, normal use of the magnetic separation rods is prevented from being affected, the screen cover and the screen frame can be flexibly detached, and the magnetic separation rods can be rapidly replaced after being abraded or damaged.

The utility model discloses a pyrite tailing recovery device, which relates to the technical field of tailing recovery, and comprises a box body, a pore plate is arranged on the inner wall of the box body, a power switch of a driving motor is controlled to enable the driving motor to drive a rotating shaft to rotate between two connecting plates, and then a cover plate is turned over to the top end of the box body. A hole plate is arranged in the box body, a powerful magnet arranged on the inner wall of the cover plate adsorbs magnetic minerals in pyrite tailings above the hole plate, and a shifting plate stirs the tailings at the top end of the hole plate, so that the magnetic substances in the tailings and the powerful magnet can be better adsorbed, and the outer wall of the hole plate and the inner wall of the box body are clamped and mounted; the bottom end of the pore plate is in contact with the top end of the bottom block, and then the insertion column fixed at the bottom end of the pore plate is matched with the inner wall of the groove formed in the top end of the bottom block, so that the pore plate is stably mounted on the inner wall of the box body, dust in the pyrite tailings can be separated by the pore plate, and normal magnetic separation of the pyrite tailings by the powerful magnet is prevented from being influenced.

The application discloses a self-gravity dry-type magnetic separation shaking table and application thereof in separation of magnetic mineral, and belongs to the technical field of mineral separation. The shaking table comprises a shaking table bed surface; tailing receiving hoppers and concentrate receiving hoppers are sequentially arranged below the shaking table bed surface; a concentrate baffle is arranged on the lower surface of the shaking table bed surface and close to the concentrate receiving hopper; the concentrate baffle is fixedly connected with the bottom of the shaking table bed surface; a magnetic field generating device is arranged above the shaking table bed surface and is arranged on a magnetic force device support frame; the movement area of the magnetic field generating device is above the bed surface; the shaking table bed surface is relatively static, and the magnetic field generating device relatively reciprocates and integrally moves forward. The application combines the magnetic separation with the gravity separation, strengthens the dry separation of the magnetic material and the non-magnetic material, solves the problem of water shortage in the western region and even in the desert region, and obtains the concentrate product with primary properties.

The invention provides an oil-water separation method of a magnetic mineral interface modified material in oilfield wastewater. The oil-water separation method comprises the following steps: constructing a proper modified agent through molecular optimization design, carrying out oleophylic modification on the surface of a natural magnetic mineral by using a screened low-cost agent, and rapidly coalescing mineral-oil flocs under the action of an external magnetic field, thereby completing the oil-water separation process of the oilfield wastewater. The method has universality to oil field wastewater with different initial oil contents, and can flexibly regulate and control the dosage of a magnetic mineral interface modification material, the treatment temperature of oil-water separation and the dosage of a modification agent, so that a more efficient and rapid oil field wastewater purification method is explored, the treated magnetic minerals can be recycled, and the method is suitable for industrial production. The defects that an existing magnetic adsorbent preparation technology is tedious, and magnetic oil-water separation operation conditions are uncontrollable are overcome.

This invention discloses a vertical ring magnetic separator and its magnetic separation method using a saddle-shaped coil, relating to the field of mining and metallurgical technology. The device includes an overall support frame, a magnet system, a rotating ring, a feeding assembly, and a discharging assembly. The magnet system is fixedly mounted on the overall support frame and surrounds part of the rotating ring. The magnet system includes at least one saddle-shaped coil, the arc-shaped surface of which is adapted to the ring surface of the rotating ring. By using a saddle-shaped coil, its arc-shaped working surface is spatially adapted to the annular contour of the rotating ring, fundamentally optimizing the magnetic field distribution. This allows the magnetic field energy to be highly concentrated and precisely applied to the magnetic medium filling the rotating ring, achieving a field strength far exceeding that of traditional racetrack-shaped coils. This significantly improves the collection ability for weakly magnetic minerals. The optimized magnetic field further reduces dependence on the magnetic yoke, resulting in a lighter overall structure and lower cost for the magnet system.

The utility model belongs to the magnetic system construction technical field of magnetic separation equipment, concretely relates to a permanent magnetic magnetic system of equal magnetic force field, including two symmetrical magnetic pole groups, each magnetic pole group includes magnetic pole head and reinforcing magnet block group, the width of magnetic pole head is L, height is H, then 2 <= H / L <= 3, the opposite side of magnetic pole head is fixedly provided with first arc convex and second arc convex, the central angle alpha of first arc convex and second arc convex is same and 20 <= alpha <= 40, the radius R1 and R2 of first arc convex and second arc convex, 2*R2 <= R1 <= 3*R2, the equal magnetic force field is located between two first arc convexes, and the distance between first arc convex and the side of second arc convex far away from first arc convex is 0.1*R1-0.45*R1. The utility model produces equal magnetic force field in the magnetic system, adjusts the inclination angle of magnetic system, can realize the effect of different magnetic minerals in mineral separation, and effectively improves the separation precision.

The invention relates to a method for analyzing the microcosmic agglomeration mechanism of ferromagnetic minerals, and belongs to the technical field of magnetic separation. Manufacturing a magnetic separation test device, wherein the device comprises an ore pulp pipe and a detachable magnet module mounted on the ore pulp pipe; modulated ore pulp is input from the inlet end of the ore pulp pipe, under the action of magnetic force, ore grains with high magnetism are captured by permanent magnet blocks on a magnet module, and particles with low magnetism or non-magnetism flow out from the outlet end of the ore pulp pipe; after ore feeding is stopped, the magnet module and magnetic concentrate particles are taken out and dried; drying the magnetic concentrate particles, placing the magnetic concentrate particles in an open cavity, slowly dripping epoxy resin glue in a vacuum environment, and placing the magnetic concentrate particles in a normal-temperature and normal-pressure environment until the epoxy resin glue is completely cured to obtain epoxy resin glue cured blocks; and carrying out slicing, flaking and microscopic observation on the epoxy resin adhesive curing block, and carrying out microscopic in-situ observation on the accumulation state of particles in the magnetic concentrate. The test device used in the method is simple, the test method is high in operability, and an important test means is provided for theoretical research of magnetic separation.

This invention belongs to the field of mineral processing and beneficiation technology, and provides a dry magnetic dispersion separation device and method for weakly magnetic minerals. It includes an electromagnet assembly comprising an iron core and multiple excitation coils mounted on the iron core. The iron core has a first magnetic end face and a second magnetic end face, forming an air gap region between them. A gradient generating component is disposed within the air gap region to generate a localized high-gradient magnetic field. A separation channel is vertically arranged within the air gap region. A trough collection assembly includes multiple collection troughs disposed below the separation channel, arranged sequentially along the magnetic field direction within the air gap region. A feeding curtain assembly is disposed above the separation channel to guide powder into the separation channel. This invention enables efficient and selective separation of various weakly magnetic fine-grained minerals directly under dry conditions.

The utility model relates to the technical field of recycling and sorting equipment, and discloses a dry-type magnetic separation device with a protection mechanism, which comprises a dry-type magnetic separator body mechanism and the protection mechanism, a mounting bottom plate is fixedly connected to one side of a dry-type magnetic separator body, a sliding groove is formed in the mounting bottom plate, and the protection mechanism is arranged in the sliding groove. A protective cover is slidably connected to the sliding groove, a conveying belt bottom frame is placed on the ground beside the dry type magnetic separator body, a conveying belt is fixedly connected into the conveying belt bottom frame, a dustproof cover plate is fixedly connected to the conveying belt bottom frame, and magnetic minerals are placed on the conveying belt in the conveying belt bottom frame to be conveyed into the dry type magnetic separator body. The dustproof cover plate is used for shielding, dust raising when the magnetic minerals fall into the dry magnetic separator body is avoided, when the dry magnetic separator body carries out magnetic separation discharging, the protective cover shields the discharging area, dust raising is avoided, the protective cover is pushed to one side when the magnetic minerals subjected to magnetic separation are cleaned, and cleaning work is facilitated.

The invention relates to the technical field of magnesite raw materials, and discloses a magnesite raw material magnetic separation screening process and equipment. The method comprises the following steps: S1, pretreatment: crushing a magnesite raw material until the particle size is less than 10mm, and carrying out preliminary screening through a vibrating screen to remove large-particle impurities; by arranging the driving mechanism, crushed magnesite raw materials are poured into the feeding box, then the magnesite raw materials enter the machine shell from the feeding box, meanwhile, a motor is started, the motor drives a first transmission gear to rotate, and then the first transmission gear drives a second transmission gear and a magnetic roller to rotate through a chain; when the magnetic suction roller rotates, magnetic minerals in magnesite raw materials can be adsorbed to the surface of the magnetic suction roller, meanwhile, in the rotating process, the scraper above the discharging box can scrape off the magnetic minerals, then the magnetic minerals are discharged out of the discharging box, effective separation of the magnetic minerals and non-magnetic minerals is achieved, and the screening efficiency is effectively improved.

The invention discloses a comprehensive utilization method of silicon-manganese alloy smelting smoke dust, which belongs to the field of mineral processing and secondary resource comprehensive utilization, and comprises the following steps: adding water into the silicon-manganese alloy smelting smoke dust, stirring for size mixing, carrying out water leaching, recovering soluble K, Rb and other components, filtering, adding water into the filter residue again for size mixing, carrying out low-intensity magnetic separation and high-intensity magnetic separation, and carrying out high-intensity magnetic separation and high-intensity magnetic separation; magnetic Fe minerals and Mn minerals are recovered, a certain amount of non-oxidizing acid is added after ore pulp concentration of magnetic separation tailings is adjusted, Zn, Cu and other heavy metal ions are recovered through acid leaching, after acid leaching tailings are dehydrated, auxiliary materials are added for sintering, and the sintered tailings are returned to a silicon-manganese alloy smelting furnace for secondary smelting. The method is reasonable in process, simple in flow, high in valuable component recycling rate, easy to implement and beneficial to achieving reduction and recycling of the smelting smoke dust from the source.

This application discloses a method for extracting the residual density field of the Earth's crust based on the separation of magnetic mineral density effects, relating to the field of geophysics. The method includes: obtaining the three-dimensional density and magnetization structure of a target region; obtaining the three-dimensional temperature structure of the target region; converting magnetization into magnetite content; and stripping away the density effect of magnetite to obtain the residual density of the Earth's crust. This invention, through quantitative estimation and separation of the magnetic mineral density effect, explicitly removes the contribution of magnetic minerals to the density field from the total density structure, avoiding interference from magnetic mineral enrichment in the interpretation of crustal density anomalies. It estimates the volume fraction of magnetite using magnetic information and combines it with the temperature-corrected density structure to establish a crustal density component decomposition method based on a volume fraction mixing model, achieving physical differentiation between magnetic and non-magnetic components in the density field. It does not rely on specific gravity or magnetic inversion algorithms and has good versatility and scalability.

The application discloses a kind of powder ore dry fluidization separation magnetic separators, it is related to mineral processing equipment technical field, including non-magnetic ore bucket, magnetic ore bucket, non-magnetic mineral and magnetic mineral, further include: mineral separation adjusting plate, electromagnetic flat plate, permanent magnet cylinder type magnetic roller and vibrating feeder, electromagnetic flat plate includes: flat plate frame, support adjusting mechanism, connecting plate, excitation coil, transmission reduction motor and transport belt.The application is sequentially turned on and off by excitation coil, so that the looseness between particles is improved, and therefore the non-magnetic particles carried by magnetic agglomeration can be separated from the magnetic particles, thereby greatly reducing the magnetic particle inclusions, achieving the effect of effective separation, as the magnetic mineral is about to leave the electromagnetic flat plate force range, the particle trajectory is changed by the permanent magnet cylinder type magnetic roller, so that the magnetic mineral particles are far away from the non-magnetic mineral particles, to obtain high-quality magnetic concentrate.