198 results about "Mineral particles" patented technology

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 relates to the technical field of space exploration and lunar soil experiments, in particular to a melting centrifugal type mineral particle morphology remodeling device and a lunar soil glass ball preparation method. The device comprises a mineral protolith high-temperature melting system, a mineral melting slurry conveying system, a centrifugal mineral particle size control system and a mineral particle cooling and morphology remodeling system. The preparation method of the lunar soil glass ball comprises the following steps: adding basalt mineral powder and mineral melting additive powder into a melting centrifugal mineral particle morphology remodeling device to obtain simulated lunar soil glass balls with different particle sizes, and performing morphology transformation on the simulated lunar soil glass balls with different particle sizes by using an ion beam gun. And the lunar soil glass ball state of the impact melting history is reduced. According to the method, high-precision engineering mass production of components, morphology and mechanical properties of the lunar soil glass balls is realized through a fusion centrifugal forming and ion beam surface control composite process, and the problem of soil mechanical behavior deviation caused by morphology distortion of existing simulated lunar soil is solved.

The application discloses a beneficiation separation method for high-copper and low-zinc high-sulfur polymetallic ore, which comprises the following steps: A, after crushing the raw ore, ball milling and grading are performed, the sand is returned to the ball mill, and the overflow product is fed into a copper roughing process; B, copper roughing is performed; C, the roughing concentrate is subjected to copper cleaning process to obtain copper concentrate, and the roughing tailings are fed into a copper scavenging process; D, copper scavenging is performed, the scavenging tailings are subjected to grading, the sand is returned to the ball mill, and the overflow product is fed into a zinc roughing process; E, zinc roughing is performed, the roughing concentrate is subjected to zinc cleaning process to obtain zinc concentrate, and the roughing tailings are subjected to zinc scavenging process to obtain zinc tailings. The application efficiently realizes the separation of copper concentrate and zinc concentrate by fully utilizing the mineral particle size distribution characteristics, introducing a particle size grading system and improving the flotation reagent, and has the technical characteristics of high separation yield, easy operation, stable separation index and the like.

The invention relates to the technical field of image processing and intelligent identification, and discloses an image segmentation method for identifying a mineral boundary in a table ore zone. The method comprises the steps of constructing a multi-branch single-output enhancement unit based on gating enhancement and multi-head attention combined dynamic fusion, constructing a multi-scale fusion module of a split-level fusion pyramid structure based on multi-head attention and residual fusion, constructing a trunk module based on convolutional layer and enhancement unit stacking, and constructing a multi-scale fusion module of a split-level fusion pyramid structure based on multi-head attention and residual fusion. Constructing an image recognition segmentation model by combining step-by-step down-sampling, a multi-scale fusion module and a prediction head; and obtaining an ore zone image of a shaking table operation site of the reselection workshop, inputting the ore zone image into the image recognition segmentation model to obtain a recognition result, and completing shaking table separation of the mineral particles based on the recognition result. The problem of insufficient segmentation precision caused by particle size difference, illumination interference, fuzzy boundary and real-time requirement in the existing industrial mineral separation process is solved.

The invention discloses a sandstone slice image component identification method based on a GL-SLIC algorithm and semi-supervised learning. The method comprises the following steps: firstly, acquiring a sandstone slice image amplified by 200 times under single polarization, converting an RGB image into a CIE-Lab color space, and extracting a GLBP texture feature vector; then a GL-SLIC superpixel segmentation algorithm is constructed, and adaptive segmentation based on texture and color features is realized in combination with a Gabor filter and a local binary pattern; then implementing a region merging algorithm to generate complete mineral particles and pore fragments; finally, a classifier based on VGG16 and a discriminator based on ResNet18 are constructed, a semi-supervised self-training framework is adopted, a model is initialized by using about 6% of manual labeling samples, a high-confidence-coefficient pseudo-label extension training data set is generated through iteration, and automatic recognition of sandstone components such as quartz, pores, kaolinite, rock debris and a matrix is achieved. According to the method, the recognition accuracy of 96.3% on a test set is achieved, compared with a traditional method, the segmentation precision and the recognition accuracy are remarkably improved, the data labeling cost is greatly reduced, and an efficient technical scheme is provided for automatic analysis of geological images.

The invention discloses a mineral particle surface modification device based on vortex strengthening, and relates to the technical field of mineral separation, the mineral particle surface modification device comprises a shunting circulation mixing assembly, and the shunting circulation mixing assembly is used for mixing ore pulp and chemicals and then conveying the mixture to an inlet of a pulp mixing tank; the flow dividing and circulating mixing assembly comprises a transition pipeline with one end communicated with an inlet of the pulp mixing tank, a first pipeline is coaxially arranged in the transition pipeline, a second pipeline is arranged outside the transition pipeline in the length direction of the transition pipeline, and the two ends of the second pipeline extend into the transition pipeline. The head end of the second pipeline is located in front of the head end of the first pipeline, and the tail end of the second pipeline is communicated with the tail end of the first pipeline. The agent and the ore pulp are forcibly refluxed and mixed in advance before entering the pulp mixing tank, and due to the mixing effect, the mixed liquid does not need to be stirred for a long time in the subsequent pulp mixing tank, and the utilization rate of the agent is increased.

The invention relates to the technical field of mineral processing, and particularly provides a flotation concentrate quality evaluation method. According to the flotation concentrate quality evaluation method, systematic and quantitative comprehensive evaluation is carried out by combining multiple parameters such as the concentrate grade, the harmful impurity content, the yield, the mineral granularity characteristic and the dissociation degree characteristic, and accurate data support can be provided for concentrate quality judgment and mineral separation process optimization.

The invention relates to the technical field of sludge treatment and recycling, in particular to a novel sludge conditioner for a novel filter press, which is prepared from the following components in percentage by weight: 15 to 30 percent of modified humate, 5 to 12 percent of compound enzyme preparation, 8 to 20 percent of zwitterionic polymeric flocculant, 20 to 40 percent of inorganic skeleton construct, 3 to 10 percent of oxidant and 10 to 25 percent of hydrophobic modified mineral particles. And the balance of pH regulator and deionized water. According to the novel sludge conditioner disclosed by the invention, by compounding modified humate and other core components, a synergistic action mechanism is constructed, so that the water content of a sludge filter cake is less than or equal to 50-60%, the weight of the filter cake is reduced by over 20%, the COD (Chemical Oxygen Demand) of filtrate is reduced by over 30%, the novel sludge conditioner is adaptive to various filter presses, the filter pressing period is shortened by over 15% through an optimized conditioning process, the productivity is improved, and the treatment cost and the environmental protection pressure are reduced.

The invention relates to the field of image recognition, and discloses a mineral structure type recognition method, system and device and a storage medium. The method comprises the following steps: collecting an optical microscopic image of a sample; detecting the optical microscopic image by adopting a preset image processing algorithm to obtain a network-shaped characteristic graph, a mineral total particle graph, a plurality of single mineral particle graphs and respective pixel point numbers; if the number of the pixel points of the network-shaped feature map is greater than 0, performing intersection comparison on the network-shaped feature map, the mineral total particle map and each single mineral particle map to obtain a total intersection, a plurality of sub-intersections and respective pixel point numbers; and calculating a first proportion based on the number of pixel points of the network-shaped feature map and the number of pixel points of the total intersection, calculating a second proportion based on the number of pixel points of each single mineral particle map and the number of pixel points of each sub-intersection, and further identifying the structure type of each mineral in the sample, including a network structure and a crushing structure. According to the invention, the recognition efficiency of the type of the reticular structure or the crushed structure of the mineral is improved.

The application discloses a deep-sea mining system bunker device with water inlet at the bottom, and relates to the field of deep-sea mining.The technical scheme of the application comprises a bunker room;the lower part of the inner wall of the bunker room is a conical surface structure with a large upper part and a small lower part;the top of the bunker room is vertically provided with a riser pipe, the lower end of the riser pipe extends to the inside of the bunker room, the upper end of the riser pipe extends to the upper part of the bunker room and is connected with a storage room;the top of the bunker room is provided with a feeding opening, the feeding opening is located at one side of the riser pipe, the feeding opening is connected with a feeding pipe, the feeding pipe is provided with a first valve and a second valve, and a storage space is arranged between the first valve and the second valve;the bottom of the bunker room is provided with a lower bunker opening corresponding to the riser pipe, the lower bunker opening is connected with a transition pipe, and the lower part of the transition pipe is connected with a water outlet and a water inlet.The application can conveniently add minerals into the bunker room, and the minerals will not flow out during the injection process, the lower part of the conical surface structure of the inner wall of the bunker room can make the mineral particles gather in the lower bunker opening, and the upward water flow can easily lift the mineral particles.

The application belongs to the technical field of water drive reservoir development, and particularly relates to a temperature-sensitive self-fusion plugging agent and a preparation method and application thereof. The temperature-sensitive self-fusion plugging agent comprises temperature-sensitive organic particles and inorganic particles; the volume ratio of the temperature-sensitive organic particles and the inorganic particles is 5-30:70-95; and the inorganic particles are silicon-containing mineral particles. The temperature-sensitive self-fusion plugging agent has excellent temperature resistance, salt resistance and shear resistance, and high plugging strength, so that the plugging rate is improved.

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.

The invention relates to a method and an impact crusher for reducing the size of mineral particles with an impact crusher (1) comprising a housing (2) in which are provided a rotatable inner rotor (10) having a central axis and a rotatable outer rotor (11) provided coaxially with the inner rotor (10) and comprising a circumferential wall (24) having an impact section (26). A discharge space (12) is provided between the outer rotor (11) and the inner surface of the housing (2). The mineral particles are supplied to the inner rotor (10) while the inner and outer rotors (11) rotate in opposite directions about the central axis, and the mineral particles are displaced on the inner rotor (10) under the action of centrifugal force. Then, the mineral particles are thrown from the inner rotor (10) in a tangential direction towards the impact section (26) of the outer rotor (11) to reduce the size of the mineral particles upon impact to obtain impact-reduced mineral particles, and the impact-reduced mineral particles are removed from the outer rotor (11) along opposite axial sides of the impact section (26) of the circumferential wall (24) to obtain impact-reduced mineral particles. The mineral particles are discharged from the outer rotor (11) into a discharge space (12).

The utility model relates to a microobjective for mineral detection, which comprises a lens cone and an optical structure arranged in the lens cone, the optical structure comprises a first lens, a second lens, a third lens, a fourth lens, a fifth lens and a protective window sheet which are sequentially arranged from an image plane to an object plane along an optical axis, and the protective window sheet is made of sapphire. The first lens and the second lens form a first balsaming lens group, and the third lens and the fourth lens form a second balsaming lens group; the first lens is a meniscus lens, the second lens is a biconvex lens, the third lens is a biconcave lens, the fourth lens is a biconvex lens, and the fifth lens is a plano-convex lens. According to the utility model, the design is reasonable, the optical total length of 400mm can be realized, the particle diameter below 1mu m can be distinguished, the detection requirements of mineral solution are met, and the sapphire protection window with high hardness is additionally arranged at the front end to adapt to a complex and severe solution environment so as to prevent the mineral particles from being scratched and cracked.

1. Name of the designed product: grinder. 2. Use of the designed product: the designed product is used for grinding mineral particles into fine powder in sample preparation process. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view.

The utility model discloses a demagnetizing device, which relates to the technical field of superconducting magnetic separators, is used for demagnetizing mineral particles remained on a superconducting magnetic separator and adhered on magnetic conductive stainless steel wool inside a separating tank, and comprises a magnet ring, an electromagnetic coil and a control cabinet, and an electromagnetic coil is arranged at the top of the magnet ring, is electrically connected with the control cabinet, is electrified and generates a reverse magnetic field under the interaction of the magnet ring. The device has the effects of solving the problem of adhesion of mineral particles, improving the flushing efficiency and guaranteeing the treatment quality of subsequent products.

The application provides a method for measuring and calculating the grade of silver minerals above 0.037 mm, and belongs to the technical field of mineral grade detection. The application measures and calculates the silver grade in the sample through screening; measures and calculates the content of silver monomer and silver minerals by leaching, and obtains heavy sand products by gravity separation; the heavy sand products are dyed by fluorescence, and monomer silver minerals are selected; the color of the silver minerals is analyzed by scanning electron microscope point scanning data, and the volume of the monomer silver minerals is obtained by melting, so that the content is calculated; the grade of silver minerals above 0.037 mm is obtained by conversion. The application adopts density medium gravity separation and fluorescent dye tracing to quickly and accurately obtain the target minerals; the actual density of the silver minerals is measured and calculated by introducing a scanning electron microscope instead of the theoretical density, the silver minerals are smelted in a mold, the volume is measured and calculated, and the real metal amount of the silver minerals is obtained, which is closer to the actual value; the calculation error caused by impurities and irregular shape of the mineral particles is reduced; and the calculated grade of the silver minerals is more accurate.

The invention provides a gold enhanced flotation method based on electrochemical bubble interface electronic state regulation and control, and belongs to the technical field of mineral flotation. The method comprises the following steps: grinding gold-bearing ore and pulping to obtain ore pulp; performing micro-nano bubble treatment on water to obtain bubble water; applying external potential to the sparkling water for electrochemical regulation and control to obtain functionalized sparkling water; and the ore pulp, the functionalized bubble water, a collecting agent and a foaming agent are mixed and then subjected to flotation, and gold concentrate is obtained. A bubble interface is used as a core regulation and control object, and the electronic state of the bubble interface is regulated through external potential, so that the bubble interface forms a functional interface with stable charge distribution and interface polarization characteristics, and the interface interaction between bubbles and gold and gold-loaded sulfide particles is enhanced; and the collision and attachment probability of fine mineral particles and bubbles is improved. Under the condition that the using amount of the collecting agent is low, the total flotation recovery rate of gold can be increased, meanwhile, the recovery efficiency of micro-fine particle gold is remarkably improved, and the stability of the flotation process is improved.

The invention relates to a straw compost product with high acid buffer capacity and application thereof. The preparation method of the straw compost product comprises the following steps: putting the compost decomposition product into second-age or third-age decaying grubs which are subjected to starvation and gut purging for 1-2 days, feeding the second-age or third-age decaying grubs under the conditions of darkness, room temperature and relative humidity of 50-65% for 20-30 days, and airing excrement, namely worm sand, generated by the decaying grubs, so as to obtain the straw compost product with high acid buffer capacity. The soil conditioner is applied to the acid soil improvement process; according to the invention, the compost decomposition product is prepared, the grub larvae are rotten, the decomposition material is naturally granulated by the larvae through chewing and intestinal tract mucus coating effects, so that mineral particles are embedded into a worm sand matrix to form a stable granular complex, and nutrient slow release and high acid buffer performance are realized; the obtained insect sand particles have good broadcasting performance and can be used for improving the pH, the structure and the fertility of acid soil for a long time.

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.

The invention discloses a collophanite dry sorting method based on combination of color sorting and a dense medium fluidized bed. According to the method, aiming at the defects of high environmental protection risk and insufficient single color sorting precision of existing wet sorting, efficient quality improvement of medium-low-grade collophanite is realized through a synergistic process of color sorting classification and dry-method dense medium fluidized bed enrichment: firstly, raw ore is crushed, concentrate, middling and tailings are obtained through two-stage color sorting classification, the concentrate is subjected to secondary color sorting, and the concentrate is subjected to secondary color sorting; the crushing size fraction is adjusted according to the content of phosphorus pentoxide, then an iron powder dense medium matched with the mineral particle size is adopted, and accurate separation is achieved through differentiated fluidization separation density. The whole process is free of water and chemical agents, the average grade of the concentrate reaches 20% or above, the phosphorus recovery rate is 80% or above, the environment-friendly requirements of ecological sensitive areas such as water sources are met, medium-low-grade resources can be fully utilized, the production cost is reduced, and the adaptability is wide.

The application relates to the technical field of green coal selection, and discloses a linear double-layer banana screen for mineral screening, which comprises a bottom plate, the upper surface of the bottom plate is provided with two adjusting mechanisms, the top of the bottom plate is provided with a banana screen shell, the inside of the banana screen shell is fixedly connected with a fine screening plate and a coarse screening plate, the adjusting mechanisms change the included angle between the banana screen shell and the bottom plate, thereby changing the sliding speed of the minerals in the banana screen shell, the upper surface of the bottom plate is fixedly connected with two fixed columns at the position close to one end of the banana screen shell, the top of each fixed column is provided with a movable mechanism, and the movable mechanism comprises a vibrating motor. The included angle between the different banana screen shells and the bottom plate controls the sliding speed of the mineral particles of different sizes, the included angle between the banana screen shell and the bottom plate is increased, the minerals are discharged through vibration, and the effect of meeting the screening of minerals of different sizes is achieved.

The utility model discloses an efficient intelligent phosphorite flotation cell which comprises a flotation cell body, a plurality of partition plates are arranged in the flotation cell body to divide the flotation cell body into a plurality of cell bodies, a stirring device is arranged in each cell body, grooves for foam to flow out are formed in the top ends of the two sides of the flotation cell body, and a laser foam breaker is arranged at one end of each groove. The aeration holes of the air distributor are improved, bubbles are generated more sufficiently, capturing of hydrophobic mineral particles is facilitated, the flotation effect is better, and the flotation efficiency is higher. An infrared liquid level instrument installed on a phosphorite flotation tank body is in linkage with an air distributor installed at the bottom end of a flotation machine stirring paddle, the height of a foam layer is detected through infrared liquid level scanning, when the foam layer is too high, the air distributor automatically reduces the inflation amount and reduces generation of bubbles, and when the foam layer is too low, the air distributor automatically increases the inflation amount and increases generation of bubbles. And intelligentization and automation of the equipment are realized. And the laser bubbles are adopted, so that the bubbles can be broken more quickly and thoroughly, and the water consumption is also reduced.

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.

The invention provides a modeling method and a saturation prediction method of a rock physical model containing non-uniformly distributed hydrate sediments. Comprising the steps of obtaining model parameters, calculating the porosity of a mineral skeleton based on the model parameters, calculating the bulk modulus and the shear modulus of a dry hydrate skeleton, calculating the bulk modulus and the shear modulus of a dry mineral skeleton, and calculating the bulk modulus and the shear modulus of a dry composite skeleton composed of the dry mineral skeleton and the dry hydrate skeleton. And calculating the rock bulk modulus and shear modulus when the fluid is saturated, calculating the rock density value when the fluid is saturated, and calculating the stratum longitudinal wave velocity and the stratum transverse wave velocity. According to the method, on the basis of the forming mechanism and distribution characteristics of the non-uniformly distributed hydrates, the non-uniformity of the hydrates and mineral particles is considered in the modeling process, the hydrates and the mineral particles are regarded as two independent rock frameworks, and the isotropic rock physical model suitable for the non-uniformly distributed hydrates is constructed.

The invention belongs to the technical field of oil field drilling, and particularly relates to a polyacrylamide coating agent for water-based drilling fluid and a preparation method of the polyacrylamide coating agent, and the polyacrylamide coating agent is prepared by adopting an initiator to initiate free radical polymerization reaction of acrylamide, a modifier and a monomer II, the structure of the modifier contains a large number of unsaturated alkenyl substituent groups and a large number of sulfonic acid groups, so that the prepared polyacrylamide molecular chain can present a cross-linked structure, and the high temperature resistance and salt resistance of the coating agent are further improved; the clay mineral particles with negative electricity can generate a strong electrostatic adsorption effect, and a large number of hydrophilic ether bonds in the structure can generate good compatibility with hydrophilic clay minerals, so that the clay mineral particles can be highly wrapped with the hydrophilic ether bonds, and rock debris dispersion is effectively inhibited.

The invention discloses an impeller assembly for optimizing bubble distribution for a flotation machine, and relates to the technical field of flotation machines, in particular to the impeller assembly for optimizing bubble distribution for the flotation machine, which comprises a storage barrel and a cleaning piece, a fixing frame is fixedly mounted at the upper end of the storage barrel, a guide block is fixedly mounted on the fixing frame, and a rotating piece is mounted on the guide block; the rotating part comprises a mounting box and a plurality of blades; the plurality of blades are arranged in the annular array, each blade is driven by the adjusting piece to locally rotate, and the inclination angle of the blades is synchronously adjusted, so that the optimization of bubble distribution is realized. In the flotation process, air can be sheared into fine bubbles through rotation of the blades, and the bubbles are evenly distributed in the storage barrel by adjusting the angles of the blades. By means of the optimized bubble distribution mode, the contact opportunity of the mineral particles and the bubbles can be remarkably improved, the mineral particles can be attached to the surfaces of the bubbles more easily, and therefore the flotation efficiency and the recovery rate are improved.

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.

The invention discloses a hedging jet flotation machine and a hedging jet flotation method. The flotation machine comprises a bubble water generator, a flow mixer, a mineralizing device and a flotation tank. The bubble water generator is connected with a water source and an air source, and air is cut into microbubbles through a microcellular foam maker to form bubble water. The flow mixer is connected with the output end of the generator and an ore pulp source, so that bubble water and ore pulp are mixed into bubble ore pulp flow; nozzles are arranged on the shell wall of the mineralizing device, and ore pulp flows ejected by the same group of nozzles converge in the cavity; the flotation tank is connected with the output end of the mineralizing device. The flotation method comprises the steps of preparing bubble water, mixing the bubble water with ore pulp to form ore pulp flows, oppositely flushing multiple strands of ore pulp flows, separating bubbles from liquid and the like. The bubble water is separated from the mineralization function space, and the microcellular foam maker is only in contact with clear water, so that ore pulp particle blockage is avoided; compressed air does not need to be additionally injected into the mineralizing device, disturbance airflow does not exist, the hedging jet flow integrity and turbulence intensity are guaranteed, the collision probability of micro-fine particle minerals and bubbles is improved, and the mineralizing effect is optimized.

The invention provides a MgO-Al2O3-SiO2 ternary component tundish covering agent and a preparation method and application thereof.The tundish covering agent is composed of a base material and auxiliary materials, the base material is siliceous minerals, and the auxiliary materials comprise expansible minerals and melting point adjusting minerals; the preparation method comprises the following steps that siliceous minerals, expansible minerals and melting point adjusting minerals are crushed and screened, and siliceous mineral particles, expansible mineral particles and melting point adjusting mineral particles are obtained respectively; and the siliceous mineral particles, the expansible mineral particles and the melting point adjusting mineral particles are matched, mixed to be uniform and dried, and the MgO-Al2O3-SiO2 ternary component tundish covering agent is obtained. The tundish covering agent prepared by the invention is good in heat preservation and covering effects, low in cost, simple in preparation process, not easy to crack during slagging-off and high in adhesion to non-metallic inclusions.