31 results about "Mineral particles" patented technology

The application discloses a method for identifying the dispersion mode of oil and gas through a cap layer, and relates to the technical field of oil and gas reservoirs. The technical scheme is as follows: selecting a rock sample, carrying out particle fluorescence testing, and obtaining a parameter QGF-E representing the content of hydrocarbon adsorbed on the outside of a mineral particle and a parameter QGF-index representing the content of hydrocarbon in the inside of the mineral particle; identifying the dispersion mode of oil and gas through the cap layer according to the relationship between QGF-E and QGF-index, wherein if QGF-E is positively correlated with QGF-index, it indicates that the dispersion mode of oil and gas through the cap layer is slow percolation; and if QGF-index basically remains unchanged with the increase of QGF-E, it indicates that the dispersion mode of oil and gas through the cap layer is episodic rupture. The analysis and testing data obtained through the quantitative fluorescence testing of the cap layer are used to distinguish the dispersion mode of oil and gas through the cap layer by using the quantitative fluorescence data of the cap layer, so that the dispersion mode of oil and gas through the cap layer can be accurately identified, and the problems of randomness and multiple solutions in the prior art can be effectively avoided.

This invention provides a refined design method for explosive charge quantity based on rock mineral particle structure, relating to the field of geotechnical engineering blasting technology. This invention maps the mineral composition and particle size data of rock samples to mineral hardness distribution characteristics and particle structure characteristics, respectively, and generates a high-dimensional feature vector through nonlinear encoding fusion. This vector is input into a graph neural network, and a rock structure feature relationship map is formed through node representation and attention mechanisms. Using this map as a condition, under the constraint of baseline explosive consumption, a deep generative network learns and outputs a differentiated charge distribution matrix corresponding to spatial location. After alignment and transformation with blasting hole mesh parameters, a charge allocation design map is generated. Finally, after blasting based on this design map, actual effect indicators are collected to construct a multi-objective optimization function. An optimization algorithm is used to adjust the parameters of the graph attention mechanism and the generative network in reverse according to the effect differences, achieving iterative optimization of the model.

This utility model relates to the field of slag screening and conveying technology, and in particular to a novel conveying device for conveying slag from a smelting furnace, comprising an outer cylinder and an inner cylinder; an assembly space is provided between the outer cylinder and the inner cylinder; a feed hopper is connected to one side of the outer cylinder, and an opening is provided at the lower end of the outer cylinder; the feed hopper passes through the outer cylinder and is connected to the interior of the inner cylinder; the surface of the inner cylinder is provided with screen holes; an anti-blocking mechanism is provided above the assembly space, the anti-blocking mechanism including a rotating rod sleeved on the inner wall of the outer cylinder, a secondary gear meshing with a moving gear on the rotating rod, and a threaded transmission block on the rotating rod, with a brush at the lower end of the transmission block; this technology can screen the incompletely refined metal elements or mineral particles from the slag during the slag transportation and collection process, thereby separating the slag from the particulate matter, thus achieving environmental protection and resource recovery.

This invention provides a heavy mineral sorting disc device, comprising: a base, a sliding plate mounted on the top of the base, a horizontal glass plate mounted on the top of the sliding plate, an adjusting frame fixedly mounted on one corner of the top of the base, an adjusting groove formed on one side of the adjusting frame, an adjusting component disposed inside the adjusting groove, the adjusting component including a knob, a threaded rod, and an adjusting block, and a vertical glass plate fixedly mounted on one side of the adjusting block. This invention allows heavy minerals to be placed on top of the horizontal glass plate and pulled by hand, causing the heavy minerals on top of the horizontal glass plate to be evenly scraped and leveled by the vertical glass plate, facilitating observation under a stereomicroscope and subsequent sorting work. Rotating the knob causes the adjusting block to move the vertical glass plate up and down, allowing the distance between the vertical and horizontal glass plates to be adjusted according to the mineral particle characteristics.

This invention discloses a millable composite casing sub for side-drilling window opening, its preparation method, and its application. The millable composite casing sub comprises the following components: a matrix, a lubricating phase, and brittle phase reinforcing particles; the matrix is ​​an aluminum alloy matrix; the lubricating phase is graphite particles; and the brittle phase reinforcing particles are brittle mineral particles. During side-drilling window opening operations, an integrated hydraulic directional device is seated inside the lower steel casing below the casing sub. A gyroscope is used for precise orientation, and then a milling cone is lowered to perform side-drilling window opening. The sub body is milled using the milling cone to form the initial window. This invention, while ensuring the overall connection strength and sealing of the wellbore, locally alters the millability of the casing material at the planned window opening point. Through material and structural innovation, it replaces traditional steel casing, shortens the operation cycle, reduces the difficulty of milling operations, and extends the service life of the milling cone, thereby achieving high efficiency, low cost, and safety and reliability in window opening operations.

A collector for reverse flotation, and a preparation method therefor and the use thereof. The collector for reverse flotation has a chemical structural formula as shown below: R1-NH-R2-NH2, wherein in the formula, R1 and / or R2 comprise(s) at least one of the following functional groups: a -CN3H4 functional group and a -SO3H functional group. The method comprises: S1, providing a diamine compound; and S2, introducing a -CN3 4 functional group and / or a -SO3H functional group into the diamine compound, so as to obtain a collector for reverse flotation. A diamine group and -CN3H4 in the collector for reverse flotation can enhance the interaction with a hydroxyl group, silicon, oxygen and other groups on the surface of an aluminosilicate mineral, thereby improving the selectivity of the collector for reverse flotation; -SO3H can reduce the interaction with metal ions in hard water, thereby improving the hard water resistance and enhancing the adaptability of the collector to hard water; moreover, a hydrocarbyl non-polar macromolecular chain in R1 and / or R2 enhances the hydrophobicity of the surface of mineral particles after the action of the collector, and therefore the collector for reverse flotation has an improved collecting capacity, and also has selectivity for and adaptability to minerals.

This application provides an energy-saving diamond beneficiation vehicle for large-particle diamond ore beneficiation, belonging to the field of diamond separation. It includes a trailer and a body, with a screening component housed inside the body. The screening component includes a separator, a support, and a screening plate. The separator is located inside the upper part of the body, the support is located above the separator, and the screening plate is located inside the upper part of the separator. In this invention, by setting up the support, screening plate, and power component, the power component drives the support to reciprocate vertically within one jigging cycle. The mineral particles are loosened by their own inertia during the reciprocating motion cycle of the screening plate, especially for coarse particles. The alternating water flow and the coordinated movement of the screening plate achieve a highly efficient and energy-saving separation effect.

This invention discloses a segmented drum screen device for mineral processing, comprising a base, a storage box, a screening machine, and a mounting frame. The storage box and mounting frame are both fixedly connected to the base, and the screening machine is inclinedly positioned on top of the storage box. The screening machine includes a casing, a main shaft, and several circular screens. The main shaft is rotatably connected to the casing. Several connecting rods are fixedly connected between the circular screens and the main shaft. Several screen holes are evenly distributed on the circular screens. Baffles are rotatably connected between adjacent circular screens, and discharge holes are provided on the baffles. A drive gear is fixedly connected to one end of the main shaft, and a drive reduction motor is fixedly connected to the top of the mounting frame. A receiving box is provided inside the storage box, located below the corresponding circular screen. This invention employs a mechanical structure for mineral particle size classification. The inclination degree controls the mineral's movement speed, and the baffles control the classification and discharge speed, ensuring good classification results for minerals at each stage and improving the efficiency of mineral processing and classification operations.

This utility model discloses a flotation cell, belonging to the field of flotation cell technology. It includes a cell body and an aeration structure. The cell body has through-slots and locking slots on its left and right sides, respectively. Bottom baffles and top baffles are respectively provided at the bottom and top of the through-slots. The aeration structure includes a connecting pipe, a movable cover, an aeration pipe, and an aeration pump. The connecting pipe is located at the bottom of the cell body, the movable cover is located at the bottom of the outer surface of the connecting pipe, the aeration pipe is located at the bottom of the movable cover, and the aeration pump is located at the end of the aeration pipe furthest from the movable cover. This flotation cell changes the size of the bubbles by altering the length of the aeration pipe extending into the movable cover, thus changing the airflow at the bottom. The combination of porous media, the aeration pipe, the movable cover, and the aeration pump simulates the effect of a flotation column foamer, achieving micro-bubbles during bottom aeration, optimizing the flotation effect, and improving the flotation recovery rate of both oxide and sulfide ores. Bottom aeration allows large mineral particles to contact the bubbles, improving their floatability.

The present invention relates to a method of manufacturing a surface-modified material, wherein the method comprises the steps of applying a coating composition onto at least one surface of a substrate to form a porous coating layer thereon, wherein the coating composition comprises mineral particles selected from the group consisting of calcium carbonate, calcium phosphate, hydromagnesite, and mixtures thereof, and a binder, and infusing the porous coating layer with at least 150 wt.-%, based on the total weight of the porous coating layer, of an infusing liquid composition to form a contained liquid layer within and on the porous coating layer, wherein the infusing liquid composition is chemically inert to the substrate and the porous coating layer. Furthermore, the present invention relates to a corresponding surface-modified material, an article comprising the same, and the use of such materials.

This utility model relates to the field of spiral chute technology, and more particularly to a mining spiral chute with an adjustable inclination angle. It includes a mounting base and a spiral chute body. The mounting base serves as the load-bearing carrier of the spiral chute, and the spiral chute body is mounted on the mounting base. It also includes support plates, etc. A vertically supporting support plate is fixedly connected to the rear side of the top surface of the mounting base. A bracket is hinged to the top of the support plate, and the bracket is fixedly connected to the spiral chute body. The spiral chute body is hinged to the support plate via the bracket. Supports are symmetrically fixedly connected to both sides of the spiral chute body. This utility model, by setting an adjustable inclination angle structure and using a motor-driven worm gear transmission mechanism to achieve angle adjustment, allows the spiral chute to flexibly adjust its working angle according to the particle size, density, and moisture content of different ores, thereby optimizing the sedimentation and stratification process of mineral particles within the spiral chute and significantly improving sorting efficiency and accuracy.

The water treatment unit (2) comprises at least one series of four filtration systems including a first filtration system (28), with activated mineral particles, a second filtration system (44), with ultrafiltration membrane, a third filtration system (52), with filter media, and a fourth filtration system (58), with ultrafiltration membrane (48). The first, second, third and fourth filtration systems (28, 44, 52, 58) are arranged in series, in said order, on a flow path (C) of the water being treated in the water treatment unit (2).

The utility model discloses a kind of copper-sulfur middle ore differentiation processing devices, including processing box, the both sides of the top of processing box are provided with flotation groove, the middle part of the top of processing box is fixed with two connecting seats. The utility model is equipped with screening plate, screening frame and two flotation grooves, the copper-sulfur mineral particles after grinding are placed in screening frame, open vibration motor, vibration motor works and drives screening plate to vibrate up and down to screen copper-sulfur mineral particles, and screened copper-sulfur mineral particles slide along guide plate and fall into one of flotation groove, after screening is completed, press elastic block inward and rotate screening plate downward, copper-sulfur mineral particles on screening plate slide downward and fall into another flotation groove, by this mode, copper-sulfur mineral particles after grinding can be screened and discharged, so that it is placed in different conditions flotation groove and is floated, so it can improve recovery rate, and reduce dosage of reagent.

This application relates to a mineral particle size detection device and measurement method, belonging to the technical field of mineral detection. It includes a mounting plate, a feeding assembly, a vortex dispersion assembly, a support assembly, a drive assembly, and a discharging assembly. The mounting plate is horizontally positioned, and a controller is mounted on its top. A connecting frame is fixedly mounted on the mounting plate, and a first support plate and a second support plate are fixedly mounted on the connecting frame. The first support plate is located below the second support plate, and a CCD camera is mounted at the bottom of the first support plate, electrically connected to the controller. A storage box is fixedly mounted on the top of the connecting frame, and the top of the storage box is open. The feeding assembly is located on the second support plate, the vortex dispersion assembly is located on the first support plate, the support assembly is located on the mounting plate, the drive assembly is located on the mounting plate, and the discharging assembly is located on the mounting plate. This application has the effect of facilitating mineral dispersion.

A CT scanning image mineral intelligent segmentation method based on SESUNet, comprising the following steps: constructing a mineral CT image dataset; constructing a segmentation model based on SESUNet; and training and optimizing the constructed segmentation model based on SESUNet.The weighted cross-entropy loss function is used to replace the standard loss function in the network optimization stage, higher weight is assigned to the foreground mineral pixels, the class difference is effectively balanced, the model pays more attention to the mineral area difficult to identify in the training, and the segmentation precision of the model and the recall rate of rare minerals are directly improved from the optimization target level.The present application realizes the automatic and accurate segmentation of mineral particle images, and provides accurate and reliable basis for subsequent mineral particle analysis and resource evaluation.

This invention discloses a dynamic image analysis and measurement method and system for cassiterite mineral particles, specifically relating to the field of industrial vision analysis technology. It addresses the problem that existing methods struggle to accurately distinguish particle motion states and separate motion trails in dynamic flow fields, leading to inaccurate segmentation, tracking, and parameter measurement. By acquiring continuous frame images and extracting flow velocity characteristics of the flow field region, the method determines cross-frame displacement trends based on the overlap of neighboring pixel grayscale distribution and flow velocity characteristics. It extracts the stability of candidate particle contour morphology and performs matching verification. For matched particles, it constructs a flow velocity field constraint range and obtains a motion vector field. Combining the motion vector amplitude corresponding to the cassiterite mineral density, it uses density clustering to distinguish cross-frame displacement from independent multi-particle motion. High-speed moving particles are selected, and inter-frame grayscale gradient difference is used to separate motion trails from the true contour. Based on the motion type and the true contour, it completes target segmentation, contour tracking, and parameter measurement, improving the accuracy of particle analysis under dynamic conditions.

This utility model relates to the field of magnetic separation equipment technology, and more particularly to a permanent magnet magnetic separation column. It includes a separation cylinder and a support frame. A water inlet pipe is provided inside the separation cylinder, with its end extending out of the separation cylinder and connecting to an external water supply device. Multiple layers of moving magnetic pole groups are sequentially arranged on the support frame from top to bottom. Each static magnetic pole group includes a first permanent magnet positioned opposite each other on both sides of the separation cylinder, with opposite polarities on opposite sides. Each layer of moving magnetic pole groups includes a second permanent magnet positioned opposite each other on both sides of the separation cylinder, with opposite polarities on opposite sides. When the second permanent magnets in each layer of moving magnetic pole groups are opposite each other, the magnetic field direction is the same. The second permanent magnets are rotatably mounted on the support frame, with opposite rotation directions for each layer of second permanent magnets positioned opposite each other on both sides of the separation cylinder. The periodically dynamically changing magnetic field inside the separation cylinder causes mineral particles to periodically agglomerate and disperse within the separation cylinder, achieving the separation of magnetic minerals from non-magnetic minerals and improving the separation quality of magnetic minerals by the magnetic separation column.

The application relates to a brushing device, which comprises a support, a cleaning component, a longitudinal moving assembly and a transverse moving assembly. The support extends in a first direction. The longitudinal moving assembly is connected with the support and arranged at two ends of the support arranged oppositely in the first direction. One end of the transverse moving assembly is arranged on the support, and the other end of the transverse moving assembly is connected with the cleaning component. The transverse moving assembly drives the cleaning component to move stably and accurately in a third direction. The longitudinal moving assembly drives the support to move stably and accurately in a second direction, thereby driving the cleaning component to move coordinately in the second direction and the third direction, so that the cleaning component can accurately brush the target area of the waterproof coiled material, the adhesion effect of mineral particles on the modified asphalt coiled material is improved, the brushing-off effect of the mineral particle floating particles on the surface of the coiled material is improved, the quantity and thickness of the mineral particles are stabilized, the mineral particles of the waterproof coiled material are uniformly pressed in the subsequent roller process, and the adhesion strength of the mineral particles in the modified asphalt is improved.

This invention provides a grinding and flotation separation method for silicate minerals. The method includes: grinding a mixture containing silicate minerals, nitrite, and a solvent using grinding media to induce a redox reaction during grinding, resulting in a slurry; and performing flotation separation on the slurry to obtain a concentrate and tailings; wherein at least one of the silicate minerals and the grinding media contains iron, and the iron is primarily Fe2+ or Fe3+. 2+ and Fe 3+ The slurry contains one or more of the following forms: the solid matter includes mineral particles and Fe3O4, and at least some of the mineral particles are coated with an H2SiO3 layer. Compared with the traditional "grinding + flotation separation" method, the method provided in this application can improve the separation efficiency and recovery rate of various metal elements and silicate products in silicate minerals.

This application relates to a machine vision-based method for identifying mixed and incorrect materials on a conveyor belt and detecting over- and under-screen mineral particles. The method includes: acquiring target material information from a logistics transportation system; extracting multiple frames of monitoring images from monitoring videos of the mineral transportation site; correcting each mineral image to obtain a corrected image set; using a corresponding recognition method to identify the corrected image set and obtain the mineral identification result corresponding to the on-site image; and simultaneously sending the corrected image set to a particle size detection module based on the acquisition location to obtain accurate over- and under-screen particle size detection results. This solution employs a machine vision-based system for identifying mixed and incorrect materials on a conveyor belt and detecting over- and under-screen mineral particles. It can perform real-time analysis of the material types transported on the conveyor belt, promptly detect mixed and incorrect materials, and simultaneously detect the powder content and large particles in the material on the over- and under-screen belts of a vibrating screen, reducing production losses.

The application belongs to the technical field of mineral separation device, and is especially a suspension type shaking table mineral separation device, which comprises a base I-shaped steel, a connecting frame is installed on the base I-shaped steel, an upper layer suspension I-shaped steel is installed on the connecting frame, a transmission device is installed on the upper layer suspension I-shaped steel, a drip zone is installed on the transmission device, and a three-phase asynchronous reciprocating motor is installed on the upper layer suspension I-shaped steel. Compared with a traditional fixed bed surface, the belt bed surface has a lower friction coefficient and better self-cleaning performance, and the resistance of mineral particles moving on the bed surface is smaller, which is beneficial to the rapid layering and transverse movement of different specific gravity minerals. The drip zone is obliquely arranged towards the outside, so that the water obtains an outward directional flow rate when flowing out of the water outlet, which is cooperated with the reciprocating direction of the belt bed surface, and the separation effect of light minerals and heavy minerals is strengthened.

This invention discloses a ore mill with a composite additive structure, relating to the field of mining machinery technology. It includes a grinding inner cylinder and a turning and polishing linkage assembly. The grinding inner cylinder houses the turning and polishing linkage assembly, which includes a dosing head positioned at the upper part of the grinding inner cylinder cavity. The dosing head has uniformly spaced spray holes on its outer circumference, and these holes are radially connected to a hollow cavity inside the dosing head. A driven gear is rotatably mounted on the outer opening of each spray hole. In this ore mill with a composite additive structure, the turning and polishing spiral achieves revolution and rotation linkage through the meshing of the driven gear and a gear ring. This allows for the turning and polishing of the ore raw material on the throwing disc in the initial stage of raw material dispersion. Simultaneously, the additive sprayed from the rotating dosing head significantly increases the contact area between the additive and the ore raw material, ensuring that the additive evenly coats the mineral particles from the initial grinding stage. This fully utilizes the grinding aid and dispersion effects, effectively reducing grinding resistance, improving grinding efficiency, and reducing mill energy consumption.

This invention relates to the field of building materials technology, and discloses a composition for mineral-coated modified bitumen waterproof membrane, the mineral-coated modified bitumen waterproof membrane, its preparation method, and its application. The composition contains mineral particles and an adhesive compound A; the diameter R of the mineral particles satisfies the following conditions: mineral particles with a diameter of 0.2 mm ≤ R < 0.8 mm account for 25-35 wt% of all mineral particles; mineral particles with a diameter of 0.8 mm ≤ R ≤ 1.2 mm account for 55-65 wt% of all mineral particles; and mineral particles with a diameter of 1.2 mm < R ≤ 1.6 mm account for 5-15 wt% of all mineral particles. The mineral-coated modified bitumen waterproof membrane provided by this invention has excellent thermal insulation performance, puncture resistance, and bonding strength.

The application provides a method for in-situ micro-area determination of mineral element content, and relates to the field of mineral measurement. The method for in-situ micro-area determination of mineral element content comprises the following steps: preparing a polished section of an ore sample; identifying target mineral particles in the polished section and taking a backscattered image to obtain the content of target elements in multiple particles; measuring the area of each particle to be measured, calculating the proportion of the area of each particle to be measured in the total area of all particles to be measured, and obtaining the area occupancy rate of each particle; multiplying the content of the target element of each particle by the corresponding area occupancy rate, summing up, and obtaining the area-weighted average content of the target element. The element content value obtained by the method can more truly reflect the average chemical composition of the mineral in the whole ore, provide more accurate data basis for the prediction of beneficiation process indicators, and solve the problem of ignoring the influence of the size of the mineral particle size on the representativeness of the final data.

This invention discloses a special silica sand for cement strength testing, belonging to the technical field of standard materials for cement performance testing. It is suitable for non-ISO method cement mortar strength testing, requiring no additional components and made solely from natural siliceous mineral particles through physical processing. This silica sand achieves uniform performance through precise control of chemical composition, continuous three-gradation particle design, physical properties, and stability indicators, relying on a fully physical preparation process, thus avoiding the defects of existing technologies and the limitations of ISO standards. Through quantitative indicators and dedicated testing methods, it optimizes particle sphericity, surface roughness, and packing characteristics, improving the interfacial bonding force with cement paste and the density of the mortar. This invention solves the problems of large testing deviations, poor adaptability, and unstable performance of existing silica sand, making it suitable for testing various grades of cement, significantly improving the accuracy and repeatability of test results, facilitating industrial production and control, and showing broad application prospects.

This invention discloses an optically stimulated luminescence (OSL) sample collection device and method for geological and mineral exploration, relating to the field of geological exploration sampling technology. It addresses the technical problems of slow single-sampling speed and complex processes in existing sampling devices. The OSL sample collection device includes a light-shielding shell, a feeding mechanism, a positioning mechanism, a pick-and-place mechanism, and a storage mechanism. The front of the light-shielding shell has a sampling port. The feeding mechanism is located inside the light-shielding shell and stores multiple unsampled sampling tubes. The positioning mechanism receives and aligns the sampling tubes with the sampling port. The pick-and-place mechanism pushes the sampling tubes through the sampling port for sampling, or retracts the sampled tubes back to the positioning mechanism. The storage mechanism receives and stores the sampled tubes. This invention enables sampling to be completed within the light-shielding shell, and the sample storage process is conducted in a light-shielding environment after sampling, avoiding the problem of premature fading of mineral particles due to natural light exposure.

This invention relates to the field of organic solid fuel combustion technology and discloses a method for predicting the amount of particulate matter generated during solid fuel combustion. The method involves: performing component analysis on the solid fuel; predicting the release concentration in the gas phase of the solid fuel combustion, the concentration of reduction reaction products, the particle size distribution curve of easily broken mineral particles after breakage, the particle size distribution curve of fuel particles after breakage, and the particle size distribution curve of intrinsic minerals after fuel particle combustion; generating source terms based on the predicted data; inputting the source terms into a group equilibrium model; outputting the particle size distribution curve of the particulate matter after the combustion reaction; and predicting the particulate matter emission amount based on the output particle size distribution curve. This method solves the technical problem that existing research on the generation of particulate matter from organic solid fuel combustion lacks a means to predict the generation of particulate matter from organic solid fuel combustion.

The application discloses a flow film beneficiation device and method. The device comprises an inclined bed surface arranged on a vibrator and a feeder arranged on the bed surface. The vibrator drives the bed surface to generate a periodic motion formed by a lateral motion and a vertical motion. The direction of the lateral motion is parallel to the length direction of the grooves, and the direction of the vertical motion is perpendicular to the bed surface. The inclined direction of the bed surface is not parallel to the length direction of the grooves. The feeder is located at a high position in the direction perpendicular to the length of the grooves. The method adopts the device and comprises the steps of adjusting the slope of the bed surface, the vibration frequency and amplitude of the vibrator and the flow of the ore pulp and the flushing water in the feeder respectively, so that the mineral particles can move along the grooves while the ore pulp and the flushing water can cross the grooves and generate a pulsating inclined surface water flow. The lateral motion and the vertical motion of the bed surface are alternately and independently performed in stages, which can effectively avoid the energy offsetting of the existing technology, thereby improving the separation effect.

This utility model relates to the field of pretreatment flotation slurry preparation technology, and discloses a pretreatment flotation slurry preparation device for muddy minerals. This utility model solves the problem that mineral raw materials usually contain large particles of powder, and when directly added to a mixing tank for stirring, the large mineral particles result in a small contact area with the reagents, leading to uneven mixing of the minerals and reagents. This utility model uses a screening component including a threaded rod II, a motor II mounted through the top cover, and a grinding block threaded through the threaded rod II. Limit rods slide through both ends of the grinding block, and a screening frame is set on the lower side of the grinding block. When the motor I is started, the threaded rod I rotates, causing the screening frame to rotate. Smaller materials, under the action of centrifugal force, pass through the perimeter of the screening frame and fall to the bottom of the treatment tank. When the motor II is started, the threaded rod II rotates, causing the grinding block to move downwards. The grinding block grinds the large particles of material into small particles of powder, resulting in a larger contact area between the small particles and the reagents, and a more uniform mixing of the material and the reagents.

The application discloses a gas-solid fluidization dry separation method for high-density mineral particles, and belongs to the field of advanced and green coal separation technology, and aims to solve at least one problem of low separation efficiency of high-density mineral particles, poor stability in bed density adjustment process and easy bed separation in the prior art. The method comprises the following steps: in the fluidization separation process, the actual bed density is collected in real time, and it is judged whether the actual bed density is in the bed density threshold range; if not, new ferrosilicon powder and new magnetite powder are supplied into the separation barrel, and the flow of the new ferrosilicon powder is greater than that of the new magnetite powder; if yes, new ferrosilicon powder and new magnetite powder are supplied into the separation barrel, and the flow of the new ferrosilicon powder is less than that of the new magnetite powder. The application can be used for the gas-solid fluidization dry separation of high-density mineral particles.