528 results about "Mineral particles" patented technology

The invention relates to the technical field of intelligent detection of building materials, in particular to a real-time detection method for grain composition characteristics of muck. The method comprises the following steps: S1, acquiring original point cloud data; s2, particle point cloud clustering; s3, determining the particle size of the sieved particles; s4, particle morphological feature extraction; s5, correcting the mass of the particles; and S6, grading feature output. The method has the characteristics of high precision, high efficiency, low cost, wide applicability and the like in particle grading characteristic detection, is particularly suitable for grading characteristic detection of residual mud particles, can also meet the real-time detection requirements of related particulate matters in other fields, such as mineral particle screening, building gravel detection, agricultural granular fertilizer grading and the like, and has a wide application prospect. Rapid and accurate detection of grain composition characteristics in different industries can be realized, and the requirements of various industrial production and engineering application are met.

The invention provides a rock image classification method based on edge enhancement and multi-scale feature fusion. By combining the edge enhancement and multi-scale feature fusion technology, the accuracy of mineral classification in the rock slice image is remarkably improved. According to the method, rock slice image interference is eliminated through filtering and denoising, and mineral particle edges are enhanced by fusing morphological top-hat transformation and a Laplace operator; and performing multi-scale pyramid decomposition on the enhanced image to extract high-frequency information, performing multi-direction response enhancement to generate a direction feature map, and performing channel-level fusion on the original image, the edge enhanced image and the direction feature map. And finally, inputting the fused image into a convolutional neural network to complete rock type classification. According to the method, mineral boundary expression is effectively enhanced, the classification accuracy is improved, and a reliable technical scheme is provided for geological analysis and lithology identification.

The invention provides a mineral leaching property analysis method, which belongs to the field of process mineralogy, and comprises the following steps: crushing and enriching a sample to be detected, and selecting single mineral particles to obtain target mineral particles; the preparation method comprises the following steps: coating a sample preparation grinding tool with epoxy resin glue, adding target mineral particles, and carrying out curing and grinding treatment to obtain a primary sample; cutting the primary sample, placing the grinding surface downwards and the three wear-resistant alloys at the bottom of a sample preparation grinding tool, injecting epoxy resin glue, curing to form a composite sample, accurately grinding, polishing, performing carbon spraying treatment, performing first automatic mineralogical analysis, measuring the area of a target mineral, cleaning, and performing leaching treatment to obtain a treated sample; and after solidification, accurate grinding and polishing and carbon spraying treatment, secondary automatic mineralogical analysis is carried out, the area of the residual target mineral is measured, and the leaching index of the target mineral is calculated. Reliable technical support is provided for mineral processing technology optimization and resource evaluation, and the method is particularly suitable for development of efficient leaching technologies of precious metal, rare earth and the like.

The invention discloses a macro-micro parameter co-controlled large-scale heterogeneous pore throat network generation method, which comprises the following steps of: partitioning a set simulation region, randomly generating a plurality of mineral particle cores in each partition, simulating the growth of the mineral particle cores by utilizing a four-parameter random growth method, and generating a large-scale heterogeneous pore throat network. Taking the boundary of the core mineral of each mineral particle as potential pores and throats, and carrying out inversion to obtain the position distribution of each pore and throat; extracting position distribution of optimized pores and throats by using a genetic algorithm, matching coordination numbers for each pore and throat, and allocating target growth radius values for the pores and throats of each matching coordination number by setting microscopic pore-throat structure parameters of each partition; and utilizing a four-parameter random growth method to simulate that fluid in the pores and the throats in each partition corrodes the core of the mineral particles until the radiuses of the pores and the throats in each partition reach the target growth radius value one by one, and generating a pore-throat network image of the set simulation area.

The utility model belongs to the technical field of flotation machines, and particularly relates to a flotation machine scraper cleaning device which comprises a flotation machine main shell, first fixing rings are symmetrically arranged on one side of the upper side of the flotation machine main shell, a first shaft rod is rotationally arranged between the first fixing rings, and scraper mechanisms are arranged on the outer side of the first shaft rod at equal intervals. The scraping plate mechanism comprises a sleeve, connecting rods and scraping plates, the sleeve is fixedly connected to the outer side of the first shaft rod in a sleeving mode, the connecting rods are symmetrically arranged on the outer side of the sleeve in a surrounding mode, and the scraping plates are arranged at the ends, away from the sleeve, of the connecting rods. The bristles can brush the upper side face of the arc-shaped blanking plate and the upper side face of the scraping plate about to rotate away from the arc-shaped blanking plate, the scraping plate can be cleaned in time in the separation process, ore grain foam scraped by the scraping plate can be rapidly cleaned out of the arc-shaped blanking plate, the ore grain foam is prevented from rotating back to the surface of ore pulp along with the scraping plate, and the ore pulp quality is improved. Therefore, the effect of scraping ore grain foam next time is prevented from being affected, and the overall efficiency of ore grain separation is guaranteed.

The invention provides a fine grain flotation machine impeller of a three-layer structure, and relates to the technical field of ore dressing. The impeller comprises a framework disc, the outer end face of the framework disc is provided with a connecting flange used for being installed with a power component of the flotation machine in a matched mode, and the inner circumferential face of the framework disc is provided with a circle of outer-layer blades which are evenly arranged at intervals. A closed ring is arranged at the end, away from the connecting flange, of the framework disc, the bottom ends of the outer-layer blades are arranged on the inner side of the closed ring, and a circle of inner-layer blades are evenly arranged on the outer side of the center hole in the framework disc at intervals. A circle of middle blades which are evenly arranged at intervals and fixedly connected with the inner end face of the framework disc are arranged between the outer-layer blades and the inner-layer blades. The structure of the outer-layer blade, the framework disc and the closing plate forms a gradually-shrinking closed flow channel, so that the initial kinetic energy and local turbulent kinetic energy of mineral particles and bubbles are increased, the collision mineralization probability of the bubbles and the mineral particles is increased, the pressure at the outlet of a gradually-shrinking opening is released, nano-bubble precipitation is facilitated, and the recovery of micro-fine particle mineralization is improved.

The invention discloses a multi-element combined collecting agent and application of the multi-element combined collecting agent in low-grade lepidolite flotation, and belongs to the technical field of mineral processing. The multi-element combined collecting agent is composed of the cationic amine collecting agent, the anion accelerant and the long-chain anion collecting agent, the reaction activity of the collecting agent and the capturing behavior on mineral particles are remarkably improved in the flotation process, the foam viscosity is reduced, the fluidity is improved, and the flotation efficiency is improved. The method effectively solves the problems that foam is too stable and different silicate minerals are difficult to float and separate under the acidic condition, reduces environmental pollution and equipment corrosion, further strengthens the hydrophobic floating behavior on the surface of lepidolite, enables the grade of obtained concentrate Li2O to be high, and further realizes clean recycling of low-grade lepidolite resources.

The invention discloses a method for improving the mineral flotation recovery rate through hydrophobic nanoparticle armored bubbles, belongs to the technical field of mineral flotation, and can solve the problems of low flotation recovery rate and the like in the existing flotation technology. The hydrophobic nano particles comprise any one of carbon black, coal, graphite particles, cyclodextrin, hydrophobic modified nano silicon dioxide particles, hydrophobic modified fly ash, hydrophobic modified kaolin micro-nano particles and polystyrene nano particles; according to the method, the hydrophobic nanoparticles are used for armoring bubbles, so that the hydrophobic acting force between particles and the bubbles can be enhanced, and the flotation efficiency is improved; in addition, the existence of the nano-particles is easier to puncture liquid films of the particles and the bubbles, and the induction time is shortened. And meanwhile, the adhesion stability of mineral particles and bubbles is improved.

The invention discloses an ElectroTrackNet electric separation track identification method and system, and the method comprises the steps: collecting an electric separation image of mineral particles, inputting a trained ElectroTrackNet model, and outputting a track path for obtaining the electric separation image; wherein the ElectroTrackNet model is obtained by training through the following steps: collecting annotation data with an electric separation image as a data set; training a neural network model through a data set, and enabling an input electric selection image to pass through a plurality of convolutional layers in an ElectroTrackNet network structure; the plurality of convolutional layers perform layer-by-layer feature extraction and key information extraction on the electric selection image through a local receptive field; and then multi-scale feature extraction is carried out, and a predicted trajectory is generated and output through a fused feature image. The method has the advantages of high efficiency, accuracy and robustness when a complex electric separation image track segmentation task is processed.

The invention discloses a microcosmic numerical simulation method based on a mineral particle model, which comprises the following steps of: 1, determining the geometric size of a test sample by taking the geometric parameters of an indoor test rock sample as a reference; 2, classifying Voronoi diagram polygons in a geometric model region according to grid structure characteristics of mineral crystals, and coarsely grouping particles; 3, adopting a parallel bonding contact model for the grouped Voronoi polygonal crystals; 4, applying an acting force to the model by moving the upper and lower wall bodies in a loading mode; and 5, continuously debugging mesoscopic parameters based on a trial-and-error method, finally obtaining simulation results of a stress-strain curve, a fracture mode, a cross-crystal tensile crack, a cross-crystal shear crack, an intergranular tensile crack, an intergranular shear crack and the like based on the mineral crystal model numerical sample, and obtaining a simulation test conclusion. According to the method, an effective theoretical basis is provided for exploring a rock fracture failure mechanism, and the expansion process of the cracks in the rock is accurately predicted.

The invention provides a discrete element simulation method of an implicit particle environment, which comprises the following steps: S1, fully mixing an ore grinding medium and a ground material, taking the mixture as a whole, and measuring a stacking angle; s2, constructing an ore grinding medium discrete element model of implied particles; s3, constructing a discrete element model of the accumulation angle measuring device; and S4, parameter optimization and discrete element simulation. The maximum error between the collision energy spectrum obtained through simulation of the method and conventional simulation is only 3.3%, meanwhile, it is avoided that a large number of mineral particles are added into simulation calculation, a large number of calculation resources are saved, and energy, speed and other information of mutual collision between media in the ore grinding operation process can be rapidly and accurately obtained.

Disclosed are composite mineral particles, a preparation method therefor and the use thereof, and a method for treating manganese-containing acidic wastewater to recover manganese oxides. The composite mineral particles are prepared by subjecting preparation raw materials to a hydration reaction, roasting and dehydration condensation, wherein the preparation raw materials comprise bentonite, carbide slag and an excitant. When the composite mineral particles are used for treating manganese-containing acidic wastewater, OH- is continuously released, such that the surfaces of the composite mineral particles are negatively charged to adsorb Mn2+ in the wastewater to form an Mn(OH)2 surface precipitate, which is in contact with dissolved oxygen in the water to generate an autocatalytic oxidation effect, and further by means of the synergistic effect of adsorption-surface precipitation-autocatalytic oxidation by means of contact-aggregation and self-growth, residual composite mineral particles with thin-shell-shaped manganese oxides on the surfaces thereof are obtained, or aggregated and settled manganese oxides and residual composite mineral particles are obtained, thereby realizing the preparation of manganese oxides by means of mineralization and recovery of Mn2+ in the manganese-containing acidic wastewater, and purification treatment of the manganese-containing acidic wastewater.

A method and device for separating and recovering heavy metal ions through membrane-forming mineralization fixation, applicable in the domain of acid wastewater treatment containing heavy metal ions. The process involves mixing composite mineral particles with heavy metal acidic wastewater, then conducting a first hydration reaction under static conditions. This leads to adsorption, precipitation, and crystallization of heavy metal ions in the wastewater via a colloidal liquid membrane, resulting in particles coated with a mineralized membrane. These particles exhibit a gap between the mineralized membrane and their core. The next step is to separate these coated particles and recover them. The preparation of composite mineral particles involves mixing sodium carbonate / sodium silicate, bentonite, carbide slag, and water, followed by a second hydration reaction and subsequent granulation, aging, and dehydration condensation. The particle sizes of both bentonite and carbide slag are maintained at ≤74 m.

The invention provides a method for measuring and calculating the article position of continuous silver ore with the particle size of 0.037 mm or above, and belongs to the technical field of mineral grade detection. The silver grade in the sample is measured and calculated through screening; leaching and measuring the content of silver monomers and continuous silver minerals, and reselecting to obtain a heavy sand product; carrying out fluorescent dyeing on the heavy sand product, and selecting monomer silver minerals; analyzing the color of the silver mineral through point scanning data of a scanning electron microscope, melting the monomer silver mineral to obtain the volume of the monomer silver mineral, and calculating the content of the monomer silver mineral; and carrying out conversion to obtain the continuous silver ore article position with the size of more than 0.037 mm. According to the method, the target mineral is rapidly and accurately obtained by adopting density medium reselection and fluorescent dye tracing; introducing a scanning electron microscope to measure and calculate the actual density of the silver mineral to replace the theoretical density, smelting the silver mineral in a mold, and carrying out volume measurement and calculation to obtain the actual metal amount closer to the actual silver mineral; measuring and calculating errors caused by impurities and irregular shapes of mineral particles are reduced; and the calculated grade of the silver mineral is more accurate.

The invention relates to the field of powder material manufacturing, and discloses a powder particle model parameter calibration method based on a discrete element method.The method comprises the steps that a static accumulation angle experiment is conducted, and the accumulation angle of micron-sized powder is obtained; performing particle size scaling according to a powder particle size distribution curve; discrete element intrinsic parameters are set according to powder characteristics and mold materials; setting to-be-calibrated parameters and ranges; performing PB design according to the to-be-calibrated parameters and the range; analyzing a test result and screening test parameters which have relatively obvious influence on the simplified and scaled powder accumulation angle; establishing a regression model and seeking an optimal combination by taking a relatively significant test parameter as an independent variable and taking an actually measured static accumulation angle as a target value; and finally determining the mineral particle model parameters based on the discrete element method through the established optimization combination verified by a numerical test. According to the method, the parameter calibration efficiency and the parameter calibration accuracy are improved, and an effective technical means is provided for key parameters of a powder particle numerical simulation experiment.

The invention discloses a quantitative calculation method for pore evolution of a tight sandstone reservoir under a polarizing microscope, and relates to the technical field of mineral resource development, and the method comprises the following steps: obtaining pore evolution parameters of a rock casting body slice by using a microscope; determining an initial porosity value based on the percentage ratio of the mineral particles of each particle size; calculating the porosity value of the compacted rock on the basis of the residual intergranular pore surface porosity, the cement content surface porosity and the cement corrosion surface porosity; calculating a compaction coefficient based on the deepest buried depth value of the rock, the initial porosity value and the porosity value of the compacted rock; based on the initial porosity value, the compaction coefficient and the depth values of the rock at the multiple depths, the compaction porosity reduction rate of the rock at the corresponding depth is calculated; calculating the cement porosity reduction rate based on the cement content surface porosity and the cement corrosion hole surface porosity; and calculating the corrosion porosity based on the initial porosity value, the particle corrosion pore surface porosity and the cement corrosion pore surface porosity. According to the method, the pore evolution process of the tight sandstone is reproduced.

The invention provides a manufacturing method of a rock-like material considering prefabricated fractures, and the method comprises the following steps: obtaining three-dimensional scanning data of a rock sample through a double-source double-energy CT scanning system, carrying out three-dimensional reconstruction and analysis on the three-dimensional scanning data, and extracting the particle size distribution range, volume fraction and fracture parameters of minerals in rock; according to the particle size distribution and proportion of minerals, mineral particles consistent with rock minerals in type are prepared through crushing and mixed in proportion, and the stacking porosity is calculated; adding epoxy phenolic resin according to the porosity to form a uniformly mixed material; a fracture structure model is generated through the 3D printing technology, and camphor is selected as a fracture model consumable; fully stirring the crack model and the mixed material, filling the mold in a layered manner, and compacting; heating in a muffle furnace to cure the epoxy phenolic resin, sublimating through camphor to form a crack structure, and cooling to obtain the rock-like material with similar mineral composition and crack characteristics. According to the method, the rock similar material containing the prefabricated cracks can be rapidly manufactured.

The invention relates to magnetic mineral concentration equipment, and belongs to the technical field of mineral separation, the magnetic mineral concentration equipment comprises a magnetic flotation column cavity, an overflow groove, a stirring device, a feeding device, a magnet exciting coil and a microbubble generating device, and the magnetic flotation column cavity comprises a conical concentration device arranged at the bottom; the overflow groove is formed in the upper part of the magnetic flotation column cavity; the magnet exciting coil is arranged on the periphery of the magnetic flotation column cavity; the microbubble generation device is arranged at the lower part of the magnetic flotation column cavity and / or above the conical concentration device; the feeding device is communicated with the magnetic flotation column cavity and is used for conveying ore pulp to the magnetic flotation column cavity; the microbubble generating device is used for generating bubbles and conveying the bubbles to the magnetic flotation column cavity; the stirring device is arranged in the magnetic flotation column cavity and used for stirring ore pulp; strong magnetic and hydrophilic mineral particles in the stirred ore pulp are discharged through a conical concentration device to become concentrate, and foam formed by weak magnetic or non-magnetic and hydrophobic mineral particles is discharged through an overflow groove to become tailings.

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 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 impregnating the porous coating with at least 150% by weight of an impregnating liquid composition based on the total weight of the porous coating to form a constraining liquid layer within and on the porous coating wherein the impregnating liquid composition is chemically inert to the substrate and the porous coating. Furthermore, the invention relates to a corresponding surface-modified material, an article comprising the same and the use of such a material.

The invention discloses a relay bin device capable of intelligently detecting and adjusting the mineral height and a deep-sea mining system.The relay bin device comprises a relay bin, a height adjusting unit, a detecting unit and a self-cleaning unit, the height adjusting unit comprises a shell assembly, an air bag assembly and a piston assembly, the shell assembly is arranged in the relay bin, and the air bag assembly is arranged in the relay bin; the air bag assembly is arranged in the shell assembly, a high-pressure air chamber is formed in the air bag assembly, the movable end of the piston assembly extends into the high-pressure air chamber and is in sealed sliding connection with the high-pressure air chamber, and the movable end of the piston assembly can move up and down in the axial direction of the relay bin by inflating and deflating the high-pressure air chamber so as to adjust the height of mineral particles; the detection unit comprises a high-pressure waterproof radar and a high-pressure waterproof ultrasonic sensor, and the high-pressure waterproof radar and the high-pressure waterproof ultrasonic sensor are arranged on the two sides of a discharging port of the relay bin respectively; the cleaning end of the self-cleaning unit faces the high-pressure waterproof ultrasonic sensor and is used for cleaning the high-pressure waterproof ultrasonic sensor regularly.

The invention discloses a multi-element combined collecting agent and application of the multi-element combined collecting agent in low-grade lepidolite flotation, and belongs to the technical field of mineral processing. The multi-element combined collecting agent is composed of the cationic amine collecting agent, the anion accelerant and the long-chain anion collecting agent, the reaction activity of the collecting agent and the capturing behavior on mineral particles are remarkably improved in the flotation process, the foam viscosity is reduced, the fluidity is improved, and the flotation efficiency is improved. The method effectively solves the problems that foam is too stable and different silicate minerals are difficult to float and separate under the acidic condition, reduces environmental pollution and equipment corrosion, further strengthens the hydrophobic floating behavior on the surface of lepidolite, enables the grade of obtained concentrate Li2O to be high, and further realizes clean recycling of low-grade lepidolite resources.

The invention discloses a comb-shaped shovel wheel rotating type collecting vehicle and method for seabed ore particles. The collecting vehicle comprises an ore particle collecting device, an ore box in butt joint with the ore particle collecting device and an ore particle conveying channel connected with the ore box. The ore grain collecting device comprises a conveying belt, a comb-shaped shovel, soft protrusions, a net bag, a driving motor and a synchronous belt. After the collection vehicle arrives at an ore collection operation area, a certain rotating speed of the conveying belt, a certain advancing speed of the collection vehicle and a certain depth of the comb-shaped shovel into soil are set, the comb-shaped shovel is carried by the conveying belt to perform periodic rotation operation while the collection vehicle advances, and polymetallic nodule mineral particles are excavated through interaction of the comb-shaped shovel and seabed surface sediments; the comb-shaped shovel can directly excavate ore grains through interaction of a mechanical structure and sediments at the maximum rotating speed of 10 rpm, compared with a traditional hydraulic method, the collecting vehicle can effectively collect fully-buried and irregular ore grains, and the seabed ore grain collecting operation efficiency is improved.

The invention belongs to the technical field of underground coal gangue target detection, and particularly discloses an underground coal gangue target detection method and system based on multi-source image fusion. Aiming at the diversity and similarity of coal and gangue in an underground complex environment and the problem that a traditional single sensor cannot effectively identify coal and gangue, the invention establishes an underground coal and gangue target detection model based on an improved RT-DETR model architecture. In the aspect of model input, visible light images and infrared thermal imaging images of mineral particles in a coal mine transportation link are collected at the same time. In the aspect of model architecture, on the basis of an original RT-DETR model, the improved RT-DETR model is obtained by introducing a bimodal branch and designing structures such as a sparse scale internal feature interaction module, a cross-scale feature aggregation module and a feature fusion module suitable for cross-modal information interaction, and the recognition accuracy of an underground coal gangue target is improved.

The invention provides a pore geometric morphology fine characterization method based on confining pore forming of mineral particles, which comprises the following steps: S1, performing fine characterization of the mineral particles based on geometric morphology characteristics, and accurately identifying the mineral particles in combination with characterization results; s2, performing geometric shape quantitative characterization on different types of pores from the angles of pore diameters, roundness, flatness, shape indexes and corner angle indexes to obtain geometric shape parameters of the pores; s3, on the basis of the recognized mineral particles, the names of confinement pores are determined, clustering analysis is conducted on the confinement pores in combination with the geometric morphology quantitative characterization result obtained in the step S2, and a pore classification scheme is established; and S4, based on a classification scheme and a quantitative characterization result, determining development characteristics of shale reservoir pores, establishing a porosity contribution index model formula, and matching and verifying a reservoir physical property result. According to the method, through comprehensive analysis of the pore morphological characteristics, solid data support and theoretical basis can be provided for scientific evaluation of a high-quality pore development mode.

The invention relates to the technical field of rock slice image intelligent analysis systems, in particular to a rock slice image intelligent analysis system based on deep learning and a method thereof. The mineral and pore structure identification module is used for extracting local and multi-scale information of the image by using a deep neural network model, and processing the preprocessed rock slice image through feature mapping to obtain a high-confidence segmentation mask image of minerals and pores; the result visualization module is used for carrying out spatial feature fusion on the segmentation mask image and the original rock slice image to realize fusion display of the segmentation result and the original image, and the multiple receptive field image pooling module uses convolution kernels of different sizes and can capture mineral particle features of different sizes at the same time to realize fusion display of the segmentation result and the original image. The method is crucial for accurately identifying complex mineral aggregates. The multi-scale feature fusion module greatly improves the segmentation precision by organically combining global and local features.

The invention belongs to the field of automobile engine energy saving, and particularly relates to an engine energy saving device and method for producing hydrogen through ultrasonic water mist and mineral particles, the device comprises a special water storage tank, an ultrasonic water mist generator and micro hydrogen production mineral particles, and the special water storage tank is divided into an ultrasonic water mist generation chamber and a mineral particle hydrogen production chamber through a permeation partition plate; the ultrasonic water mist generator is placed at the position 3 mm-5 mm below the liquid level of the ultrasonic water mist generating chamber, and water is atomized through external power supply. Micro-hydrogen production mineral particles are placed at the bottom of the mineral particle hydrogen production chamber and react with water to generate hydrogen, part of hydrogen is dissolved in water, and part of hydrogen is stored in the gas storage chamber above the liquid level. An air outlet is formed in the top of the special water storage tank and connected with an engine air inlet pipe, water mist and hydrogen enter an air cylinder along with engine suction to participate in acting, and therefore the redundant fuel injection amount is eliminated, and heat transfer loss in the cylinder is reduced. The heat efficiency of the automobile engine is improved, knocking is restrained, the incomplete combustion phenomenon is reduced, and then fuel consumption and harmful gas emission are reduced.

Disclosed is a vortex mineralization-static separation flotation device and a flotation method. The device comprises: a static separator provided with a separation chamber and a vortex mineralizer provided with a mineralization cylinder. The separation chamber includes a raw ore treatment pipeline and an intermediate ore treatment pipeline. The mineralization cylinder includes a vortex mineralization pipeline. The method comprises: the mineralization cylinder being full of a raw ore slurry and the raw ore slurry in the separation chamber reaching a set level, turning on air conduits and an agitation device to make air enter the mineralization cylinder and form tiny bubbles to collide with first mineral particles and mineralize to form an aerated intermediate ore slurry; the aerated intermediate ore slurry entering the separation chamber and performing collision and mineralization with second mineral particles and the raw ore slurry, and concentrate froth being formed at a top of the separation chamber to be collected.

The invention relates to the technical field of vibrating screen production, and particularly discloses a linear vibrating screen which comprises a rack, a stock bin, a vibrating screen assembly and an adjusting mechanism, the vibrating screen assembly comprises two screens and a vibrating motor, the two screens are arranged in an up-down inclined mode and installed on the rack through vibrating bases respectively, the vibrating motor is installed on the vibrating bases, and the adjusting mechanism is installed on the stock bin. The adjusting mechanism comprises a material guiding plate, a first driving structure, a second driving structure and a third driving structure, the material guiding plate is rotationally installed below the stock bin, a material passing opening and a baffle are arranged on the upper-layer screen, the first driving structure is used for driving the screen on the lower side to move, and the second driving structure is used for driving the baffle to act. The third driving structure is used for driving the material guiding plate to turn over. According to the mineral particle screening device, the two screens can be adjusted according to the proportion of large and small particles in mineral particles, so that the screening effect on the mineral particles is ensured.

The invention discloses a method for mechanically activating and intensifying decomposition of mineral type rare earth ore and smelting separation, which comprises the following steps of: S1, adding the mineral type rare earth ore serving as a raw material into ore grinding equipment, and mechanically activating under the action of microwaves; s2, mixing the mechanically activated mineral type rare earth ore obtained in the step S1 with concentrated sulfuric acid, performing sulfating roasting decomposition to obtain sulfating roasted ore, and treating tail gas generated by roasting; and S3, the sulfated roasted ore obtained in the step S2 is leached through a magnesium bicarbonate solution, neutralization and impurity removal are conducted, and after solid-liquid separation is conducted, a sulfuric acid rare earth solution and leaching residues are obtained. The mineral type rare earth ore is subjected to mechanical and microwave activation treatment, so that the granularity of mineral particles is reduced, generation of a new reaction surface is promoted, a mineral crystal structure is deformed, a rare earth phase is subjected to favorable change, wrapped rare earth mineral components are fully exposed and are fully contacted and reacted with acid, and the activation performance of the rare earth ore is improved; and a higher rare earth yield is obtained.

The invention discloses a rock slice analysis method for quantitative discrimination of a shale deposition structure, and the method comprises the steps: scanning and splicing a plurality of rock slice pictures, generating a complete scanning and splicing image, obtaining a corresponding RGB image, carrying out the sharpening of the image, converting the image into a gray image, carrying out the Gaussian blurring, and carrying out the recognition of the image, thereby achieving the quantitative discrimination of the shale deposition structure. Carrying out binarization processing to obtain a binarized image, carrying out morphological reconstruction operation on the binarized image to obtain a reconstructed image, and identifying a closed boundary or contour of rock particles in the reconstructed image; and constructing, analyzing and observing a rock mineral particle total number change trend chart, a rock mineral particle total area change trend chart and a rock mineral particle average area change trend chart, and performing sedimentary structure type division according to the three trend charts. According to the method, the inherent uncertainty of manual statistics is effectively avoided, and the accurate judgment of the long quartz deposition structure type of the shale is remarkably improved.