Magnetic flotation column equipment with pulsating elastic cavity

Abstract

The invention relates to the technical field of mineral magnetic flotation equipment, and discloses magnetic flotation column equipment with a pulsating elastic cavity. A magnet exciting coil is fixedly connected to the periphery of the inner cylinder; an outer cylinder is arranged on the periphery of the magnet exciting coil; the bottom of the inner cylinder is fixedly connected with a conical concentrator; a first elastic cavity is coaxially and fixedly formed in the axis position of the inner cylinder; and the second elastic cavity is arranged on the inner side wall of the equipment. The problem that a common elutriation magnetic separator or a magnetic separation column depends on washing water is solved, and the problem that when the elutriation magnetic separator is used for concentrating maghemite, pyrrhotite, titanomagnetite and other occasions, due to the fact that iron ore concentrate and harmful mineral particles are different in magnetism and density, the density difference is not large, and the magnetic separation effect is poor is solved. And in the application process, a flotation process does not need to be additionally added to remove the impurities any more.

Description

Technical Field

[0001] The invention relates to the technical field of mineral magnetic flotation equipment, in particular to a magnetic flotation column equipment with a pulsating elastic cavity. Background Art

[0002] With the rise of new high-efficiency column-type electromagnetic and gravity beneficiation equipment represented by elutriation magnetic separators, electromagnetic and gravity concentration technologies and processes for magnetic iron ore have been widely used. Compared with drum magnetic separators, the concentrate grade can be greatly improved under the same feeding conditions and yield conditions. In some cases, it can completely replace the reverse flotation process of magnetite. However, when elutriation magnetic separators are used in occasions where the magnetic and density differences of mineral particles are not large, the effect of mineral separation relying solely on magnetic and gravity differences will be affected. In particular, when iron minerals are associated with a variety of other minerals in the ore, including silicate minerals such as quartz and serpentine, and sulfide minerals such as chalcopyrite, pyrite, and galena, even if the concentrate grade of the elutriation magnetic separator is very high, the physical properties of individual harmful impurities are not much different from those of the concentrate and cannot be separated, resulting in excessive harmful impurities that affect product sales, and the process even has to add a flotation process to remove impurities.

[0003] The prior art adds an air supply device and a flotation agent to the elutriation magnetic separator (or magnetic separation column, hereinafter referred to as the elutriation magnetic separator) on the basis of a magnetic separation machine, and the concentration of tailings is low (generally less than 5%), and the flotation agent is diluted, resulting in a low concentration of flotation agent, a large loss, and a poor flotation effect. Ordinary static flotation columns require a static separation zone and a stable bed layer, and the momentum of mineral particles is insufficient. Especially for the separation of coarse particles and ultrafine particles with a wide particle size, the flotation process cannot obtain ideal indicators even if the amount of flotation agent is increased. It is particularly critical that the ordinary flotation process uses agents as inhibitors. Even for magnetic iron minerals with good floatability, such as pyrrhotite, due to the poor inhibitory effect during the flotation process, a large amount of pyrrhotite will float in the foam. This seriously restricts the improvement of flotation efficiency and single machine processing capacity. It increases equipment investment and production consumption.

[0004] The flotation-magnetic composite separation method is formed by directly adding an excitation coil to the flotation column. The slurry flow rate in the static separation zone is low, the momentum of the particulate material in the slurry is small, and the probability of collision with bubbles is low. The fine particle material is seriously non-selectively agglomerated in the flotation column, which affects the selectivity of flotation. The coarse particle material is not easy to suspend, has a low probability of collision with bubbles and is very easy to fall off from the bubbles, resulting in low flotation recovery rate, low concentrate grade, and the need for multi-stage separation. Summary of the invention

[0005] In order to solve the technical problems existing in the above-mentioned background technology, the purpose of the present invention is to provide a magnetic flotation column equipment with a pulsating elastic cavity, the equipment comprises an inner cylinder 100; an excitation coil 200 is fixedly connected to the periphery of the inner cylinder 100, and an outer cylinder 1001 is arranged around the excitation coil 200; a conical concentrator 1004 is fixedly connected to the bottom of the inner cylinder 100; a first elastic cavity 3006 is coaxially fixedly arranged at the axial position of the inner cylinder 100; and a second elastic cavity 4001 is arranged on the inner side wall of the equipment.

[0006] Furthermore, a balance column 3007 is coaxially fixedly arranged at the axis position of the inner cylinder 100; the first elastic cavity 3006 is fixedly connected to the outer side wall of the balance column 3007; the device also includes a master controller, which is arranged outside the outer cylinder 1001 and is used to control various electric control mechanisms of the device, and the electric control mechanisms include a control excitation coil 200, a first elastic cavity 3006 and a second elastic cavity 4001; an inverted truncated cone 1002 is fixedly connected to the top of the inner cylinder 100; the inverted truncated cone 1002 is a uniform cross-sectional structure or a structure whose cross-sectional area gradually expands from bottom to top, or a uniform cross-sectional structure The inverted cone 1002 is fixedly connected to an overflow weir 1003 on the top, and an overflow trough 800 is fixedly connected to the periphery of the overflow weir 1003, and an overflow port 8001 is provided on one side of the overflow trough 800; a concentrate regulating valve 1005 is fixedly connected to the bottom of the conical concentrator 1004; the concentrate regulating valve 1005 is electrically connected to the control circuit of the master controller; the bottom cone angle of the conical concentrator 1004 is between 15 degrees and 135 degrees; the inner cylinder 100 is provided with a slurry concentration detector 1006, which is electrically connected to the master controller.

[0007] Further, the first elastic cavity 3006 is fixedly connected to a fluid conduit inserted and fixed at the lower part of the side wall of the inner cylinder 100 and the outer cylinder 1001, and the other end of the fluid conduit is connected to the first pulsation source; the second elastic cavity 4001 is arranged on or near the inner wall surface of the inner cylinder 100, and is fixedly connected to the fluid conduit inserted and fixed on the side wall of the inner cylinder 100, and the other end of the fluid conduit is connected to the second pulsation source 4002; or, the second elastic cavity 4001 is arranged on or near the inner wall surface of the inverted truncated cone 1002, and is fixedly connected to the fluid conduit inserted and fixed on the side wall of the inverted truncated cone 1002. The fluid conduit on the wall is fixedly connected, and the other end of the fluid conduit is connected to the second pulsation source 4002; the first elastic cavity 3006 is a cylindrical cavity structure; the second elastic cavity 4001 is a toroidal cavity structure, or the second elastic cavity 4001 is a distributed structure composed of multiple bag-like cavity structures, which are distributed inside the device; the first pulsation source and the second pulsation source 4002 are external fluid sources, and the fluid includes gas or liquid; the fluid conduit is fixedly connected with a pulsation controller 4003; the pulsation controller 4003 controls based on the first preset parameter The pulsation cycle and flow rate of the fluid entering or exiting the first elastic cavity 3006 or the second elastic cavity 4001 change the deformation of the elastic cavity, and indirectly change the flow state of the slurry in the equipment and the height of the overflow surface; the first preset parameter includes the preset period of fluid pulsation and the preset flow rate of fluid pulsation; the pulsation controller 4003 includes: an inlet end of the pulsation controller, which is connected to the first pulsation source or the second pulsation source 4002 through a fluid conduit; an automatic regulating valve 4004, one end of which is connected to the inlet end of the pulsation controller, and the other end is connected to the automatic on-off valve 4005; the automatic on-off valve 4006 is connected to the inlet end of the pulsation controller; The other end of 005 is connected to the outlet end of the pulsation controller; the controller 4006 outputs two control signals, one control signal is electrically connected to the automatic regulating valve 4004 for changing the preset flow rate of the fluid pulsation, and the other control signal is electrically connected to the automatic on-off valve 4005 for changing the preset period of the fluid pulsation; the outlet end of the pulsation controller is connected to the first elastic cavity 3006 or the second elastic cavity 4001 through a fluid conduit; the two pulsation controllers 4003 controlling the first elastic cavity 3006 and the second elastic cavity 4001 are electrically connected to the control circuit of the master controller;

[0008] The preset period of fluid pulsation is Ton+Toff, Ton+Toff≥Hf / Vb,

[0009] Wherein, Ton is the on time of the automatic on-off valve 4005, Toff is the off time of the automatic on-off valve 4005, Hf is the height of the first elastic cavity 3006, Vb is the floating speed of the bubbles in the slurry; 0.1s≤preset period of fluid pulsation≤30s.

[0010] Furthermore, the inner cylinder 100 is provided with a bulk material barrel 3003, and a bulk material distributor 3004 is connected to the bottom of the bulk material barrel 3003; one side of the bulk material barrel 3003 is connected to the feed pipe 3008 of the feeding mechanism; the top of the bulk material barrel 3003 is not lower than the overflow trough 800 or the overflow weir 1003; the bulk material distributor 3004 is a conical structure, which is placed inside the inner cylinder 100 and higher than the top of the first elastic cavity 3006.

[0011] Furthermore, a bulk material distributor 3004 is provided at the upper inner part of the inner cylinder 100, and the top of the bulk material distributor 3004 is connected to the feed pipe 3008 of the feeding mechanism; the bulk material distributor 3004 is higher than the top of the first elastic cavity 3006 and lower than the inverted cone 1002; the bulk material distributor 3004 includes: a distribution chamber 30032 at the center, the top of the distribution chamber 30032 is fixedly connected to the feed pipe 3008, and a plurality of bulk material distributors 30031 are symmetrically fixedly connected to the periphery of the distribution chamber 30032; the bulk material distributor 30031 is horizontally provided with a bulk material opening 30033 guided by a guide plate 30034.

[0012] Further, the feeding mechanism includes: a mineralizer 600; a stirring motor 6001, which is inserted and fixedly connected to the center of the top of the mineralizer 600, and the stirring rod 6002 and the stirring impeller of the stirring motor 6001 are arranged inside the mineralizer 600; a feeding pipe 3001, which is inserted and fixedly connected to one side of the top of the mineralizer 600; a doser 700, which is inserted and fixedly connected to the other side of the top of the mineralizer 600; a delivery pipe 3008, one side of which is fixedly connected to the bottom of the side wall of the mineralizer 600, and the other side is connected to the bulk barrel 3003 or the bulker 3004; a feeding pump 3002, which is fixedly connected to the delivery pipe 3008 to control the feeding speed; the stirring motor 6001 is electrically connected to the control circuit of the master controller; the feeding pump 3002 is electrically connected to the control circuit of the master controller; the doser 700 is electrically connected to the control circuit of the master controller.

[0013] Furthermore, the outer cylinder 1001 is fixedly connected to the outer periphery of the inner cylinder 100; an electromagnetic control box 1007 is fixedly connected to the upper part of the outer wall of the outer cylinder 1001, and the electromagnetic control box 1007 is electrically connected to the master controller and the excitation coil 200; the excitation coil 200 is a plurality of groups; the master controller controls the electromagnetic control box 1007 to control the excitation coil 200 to generate a pulsating magnetic field in a downward direction based on a second preset parameter; the second preset parameter includes a preset period of magnetic field pulsation and a preset intensity of magnetic field pulsation; the magnetic field generated by the excitation coil 200 is synchronized with the pulsating action generated by the first elastic cavity 3006 and is opposite to the direction of buoyancy, guiding strong magnetic minerals to settle downward and weak magnetic or non-magnetic minerals to overflow upward.

[0014] Furthermore, a microbubble generating mechanism 500 is connected to the bottom of the conical concentrator 1004; the microbubble generating mechanism 500 includes a microbubble generator 5001, the microbubble generator 5001 is inserted and fixed on the side wall of the conical concentrator 1004, the side of the microbubble generator 5001 with air holes is arranged inside the conical concentrator 1004 and / or inside the inner tube 100, and the other side is arranged outside the conical concentrator 1004 and fixedly connected with a gas separation tube 5002, one side of the gas separation tube 5002 is fixedly connected with a gas separation regulating valve 5003, and one side of the gas separation regulating valve 5003 is fixedly connected with a gas separation gas source 5004; the gas separation regulating valve 5003 is electrically connected to the master controller; there are a plurality of microbubble generators 5001, and they are respectively inserted and fixedly connected on the side walls of the conical concentrator 1004 in a circular array.

[0015] Furthermore, a material control mechanism 900 is provided on the upper part of the bulk material barrel 3003; the material control mechanism 900 includes a fixed barrel 9001, the fixed barrel 9001 is connected and docked with the upper mouth of the bulk material barrel 3003, a feeding barrel 9002 is fixedly connected to the top of the fixed barrel 9001, slide plates 9003 are symmetrically provided on the front and rear sides of the feeding barrel 9002, a fixed seat 9004 is fixedly connected to the top of the fixed barrel 9001 near the surface, a feeding motor 9005 is fixedly connected to the fixed seat 9004, a first rotating shaft 9006 is symmetrically connected to the right side of the feeding barrel 9002, a first pulley 9008 is fixedly connected to the surface of the first rotating shaft 9006 near the right end, and a first rotating shaft 9006 is fixedly connected to the middle of the surface A first gear 9007 is fixedly connected, and a fixed plate 9009 is symmetrically fixedly connected to the front and rear sides of the feed barrel 9002 near the right side. The fixed plate 9009 is rotatably connected to the second rotating shaft 90011 on the right side, and a second pulley 90012 is fixedly connected to the surface of the second rotating shaft 90011 near the right end. A belt 90013 is sleeved between the first pulley 9008 and the second pulley 90012, and a second gear 90014 is fixedly connected to the surface of the second rotating shaft 90011 near the left end. The slide plate 9003 is fixedly connected to an L block 90015 away from the surface of the feed barrel 9002, and a rack 90016 is fixedly connected to the right side of the L block 90015; the feeding motor 9005 is electrically connected to the master controller.

[0016] Furthermore, grooves matching the slide plate 9003 are provided on the front and rear sides of the feed barrel 9002, and the surface of the slide plate 9003 penetrates and is slidably connected to the groove front and back, the second gear 90014 is meshed with the rack 90016, the two first gears 9007 are meshed with each other, the output end of the feed motor 9005 is fixedly connected to the right end of the first rotating shaft 9006, and the first gear 9007 is meshed with the rack 90016; the outlet of the delivery pipe 3008 is connected through the upper end of the side wall of the feed barrel 9002.

[0017] Compared with the prior art, the beneficial effects achieved by the present invention are:

[0018] 1. The present invention solves the technical problem that the washing magnetic separator needs to use a large amount of flushing water, but the addition of water to the equipment affects the concentration of the flotation agent by setting an elastic cavity and controlling the pulsation of the elastic cavity. Different from the technology that the ordinary flotation column (machine) needs to construct a turbulent flotation zone and a static separation zone that are physically isolated from each other, the present invention does not need to form a clear foam layer of a certain thickness and a stable pulp-foam interface, and no longer needs a foam tank and a scraping device, thereby realizing the magnetite magnetic flotation composite beneficiation technology, which can completely or partially cancel the flushing water, avoid the dilution of the flotation agent by the flushing water, not only enhance the effectiveness of the agent, but also greatly reduce the amount of agent and tailings water. The technical solution of the present invention can be used for multiple purposes, and can be used as an elutriation magnetic separator or a flotation column alone, or as a composite magnetic flotation column. Especially in water-scarce areas, the use of elastic cavity pulsation to drive the pulp to change the rising speed instead of the washing water of the elutriation magnetic separator to produce the elutriation effect can greatly reduce the water and electricity consumption and the volume of tailings, save the equipment investment cost, and reduce the equipment site occupation. The present invention solves the problem of common elutriation magnetic separators or magnetic separation columns being dependent on flushing water, and also solves the problem of the iron concentrate grade meeting the standard but individual harmful impurities exceeding the standard when the elutriation magnetic separator is used to select hematite, pyrrhotite, titanomagnetite and the like, due to the small magnetic and density differences between the iron concentrate and harmful mineral particles. In application, there is no need to add an additional flotation process to remove impurities.

[0019] 2. When the present invention is applied, the tailings slurry + mineralized bubble mixture can be pulsated upward and overflowed through the overflow weir, eliminating the requirement of the prior art to produce a stable foam layer. The slurry surface in the overflow tank produces a "surge effect", which is conducive to carrying more coarse particle impurities out of the overflow tank faster to become tailings. The pulsation of the slurry can inhibit the increase of bubble size, and reducing the bubble diameter can improve the flotation efficiency of fine-grained minerals. The pulsation of the slurry can prevent the non-selective flocculation of fine-grained minerals. The grade of iron ore concentrate and the separation efficiency are improved.

[0020] 3. In the technical solution of the present invention, a master controller is set to control each electric control mechanism of the equipment, and a fully dynamic flotation technical effect of "elastic cavity pulsation + bottom micro-bubble flotation + excitation magnetic field + slurry fluid dynamics control + slurry concentration control + flotation agent concentration control" working synchronously is constructed. Under the control of the master controller, the excitation magnetic field and the elastic cavity pulsation act synchronously in the opposite direction, and the bottom micro-bubble flotation and slurry fluid dynamics control means are superimposed to achieve a perfect combination of pneumatic flotation and washing magnetic separation. The strong magnetic ore particles in the slurry are subjected to the synchronous reverse change of the magnetic field force, which offsets the upward impact of the pulsating slurry fluid and the adhesion of the bubbles, and will not enter the tailings overflow with the rise of the slurry liquid level. Non-magnetic ore particles, lean intergrowths and easily floating harmful impurities + bubbles are less affected by the magnetic force, and are enriched in the slurry liquid surface area under the action of slurry pulsation and bubble adhesion and enter the tailings outlet with the overflow. The master controller automatically controls the excitation magnetic field and the pulsating ore flow in the opposite direction. The magnetic field intensity changes synchronously with the pulsation direction of the elastic cavity and adjusts the separation magnetic field intensity in the opposite direction of the buoyancy, forming a fully automatic dynamic magnetic flotation system, solving the problems of "slurry running into the slot" of the flotation column (machine) and "black ore running out of the washing magnetic separator", and improving the product recovery rate. Under the coordinated control of the master controller's multiple control circuits, not only the flotation effect of the reagent is enhanced, but also the gas buoyancy, pulsating fluid force, magnetic force, and gravity separation effects are further enhanced. That is, the flotation separation rate is improved, reagents are saved, and it is also conducive to the disposal of coarse-grained gangue.

[0021] 4. The present invention does not have the "stable foam layer" of the traditional flotation method, but uses the pulsation of the elastic cavity to generate the pulsation of the ore pulp, so that the pulsation of the ore pulp flow and the pulsation change of the overflow liquid level. The pulsation of the ore pulp flow enhances the flotation mineralization effect and the effect of the magnetic field on the magnetic particles, non-magnetic particles and weak magnetic particles. The pulsation change of the overflow liquid level allows the mineralized bubbles adhering to the hydrophobic particles and the hydrophobic particles and impurities enriched below the liquid surface after the bubble burst to have the opportunity to jump over the overflow weir in time and enter the overflow tank to form a continuous overflow, thereby improving the flotation efficiency and enhancing the controllability of the flotation tailings. It no longer relies on flotation agent inhibitors, but uses physical means to use the excitation coil to generate a magnetic force opposite to the buoyancy of the bubbles to restrict the magnetic minerals from entering the overflow tailings to improve the product recovery rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 A schematic structural diagram of a first magnetic flotation column device with a pulsating elastic cavity provided in an embodiment of the present invention;

[0024] Figure 2A schematic structural diagram of a second magnetic flotation column device with a pulsating elastic cavity provided in an embodiment of the present invention;

[0025] Figure 3 A schematic structural diagram of a third magnetic flotation column device with a pulsating elastic cavity provided in an embodiment of the present invention;

[0026] Figure 4 A schematic diagram of the structure of a material control mechanism provided in an embodiment of the present invention;

[0027] Figure 5 A schematic diagram of a top view of the gear part of a material control mechanism provided in an embodiment of the present invention;

[0028] Figure 6 A schematic diagram of the structure of the gear part of a material control mechanism from a bottom view according to an embodiment of the present invention;

[0029] Figure 7 The following are schematic side and top structural diagrams of a bulk material loader according to an embodiment of the present invention.

[0030] In the figure: 100, inner cylinder; 1001, outer cylinder; 1002, inverted truncated cone; 1003, overflow weir; 1004, conical concentrator; 1005, concentrate regulating valve; 1006, slurry concentration detector; 1007, electromagnetic control box; 200, excitation coil; 3001, feeding pipe; 3002, feeding pump; 3003, bulk barrel; 30031, bulk pipe; 30032, material distribution chamber; 30033, bulk port; 30034, guide plate; 3004, bulker; 3006, first elastic cavity; 3007, balance column; 3008, feed pipe; 4001, second elastic cavity; 4002, second pulsation source; 4003, pulsation controller; 4004, automatic regulating valve; 4005, automatic on-off valve; 4006, controller ;500, micro bubble generating mechanism;5001, micro bubble generator;5002, gas distribution bag;5003, gas distribution regulating valve;5004, gas distribution gas source;600, mineralizer;6001, stirring motor;6002, stirring rod;700, doser;800, overflow trough;8001, overflow port;900, material control mechanism;9001, fixed cylinder;9002, feeding cylinder;9003, slide plate;9004, fixed seat;9005, feeding motor;9006, first rotating shaft;9007, first gear;9008, first pulley;9009, fixed plate;90011, second rotating shaft;90012, second pulley;90013, belt;90014, second gear;90015, L block;90016, rack. DETAILED DESCRIPTION

[0031] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] The present invention provides the following technical solutions:

[0033] Embodiment 1

[0034] Combination Figures 1 to 3 As shown, a magnetic flotation column device with a pulsating elastic cavity includes an inner cylinder 100, an excitation coil 200 is fixedly connected to the periphery of the inner cylinder 100, and an outer cylinder 1001 is arranged on the periphery of the excitation coil 200; a conical concentrator 1004 is fixedly connected to the bottom of the inner cylinder 100; a first elastic cavity 3006 is coaxially fixedly arranged at the axial center position of the inner cylinder 100; and a second elastic cavity 4001 is arranged on the inner side wall of the device.

[0035] Preferably, a balance column 3007 is coaxially and fixedly disposed at the axial center of the inner cylinder 100 ; and the first elastic cavity 3006 is fixedly connected to the outer side wall of the balance column 3007 .

[0036] The function of the balance column 3007 is to occupy the axial area of ​​the inner cylinder. This area has "magnetic voids" and water vortices, which affect the mineral processing indicators.

[0037] Furthermore, the device also includes a master controller, which is arranged outside the outer cylinder 1001 and is used to control various electric control mechanisms of the device. The electric control mechanisms include a control excitation coil 200, a first elastic cavity 3006 and a second elastic cavity 4001.

[0038] When in use, the main controller is used to change the internal pressure of the elastic cavity to cause its volume to pulsate, thereby affecting the spatial shape within the equipment and causing slurry pulsation, thereby achieving a periodic increase or decrease in the slurry level within the equipment; controlling the pulsation amplitude and frequency of the elastic cavity can achieve flexible adjustment of the flow field and flow velocity within the equipment.

[0039] This embodiment provides an elastic cavity in the equipment and performs pulsation control on the elastic cavity, thereby solving the technical problem that the washing magnetic separator needs a large amount of flushing water but adding water to the equipment affects the concentration of the flotation agent, making it possible to apply the magnetic flotation composite mineral separation method to magnetite.

[0040] The main controller controls the excitation coil 200 to generate a magnetic field force direction opposite to the bubble buoyancy direction, and the magnetic field strength change cycle is synchronized with the elastic cavity pulsation cycle. When the elastic cavity pulsates to increase the slurry level, the magnetic field strength is increased synchronously. Similarly, when the elastic cavity pulsates to reduce the slurry level, the magnetic field strength is reduced synchronously. The speed and efficiency of mineral separation are enhanced.

[0041] Furthermore, an inverted truncated cone 1002 is fixedly connected to the top of the inner cylinder 100 .

[0042] Optionally, the inverted frustum 1002 is a structure with a uniform cross-section or a structure with a cross-section gradually expanding from bottom to top, or a combination of a structure with a uniform cross-section and a structure with a cross-section gradually expanding from bottom to top.

[0043] Among them, the inverted truncated cone 1002 is designed as a cavity with a gradually enlarged cross-sectional area from bottom to top, which increases the radial movement distance of the overflow ore particles and reduces the overflow speed in the variable diameter area. The magnetic particles washed to the overflow surface are prone to sedimentation due to their high density and small volume, and cannot cross the overflow weir into the tailings. However, general mineralized bubbles and impurities are basically not affected due to their low density and large volume. Avoid the overflow of useful minerals and affect the recovery rate.

[0044] Furthermore, an overflow weir 1003 is fixedly connected to the top of the inverted truncated cone 1002 , an overflow trough 800 is fixedly connected to the periphery of the overflow weir 1003 , and an overflow port 8001 is opened on one side of the overflow trough 800 .

[0045] When in use, the slurry level in the equipment is controlled by changing the internal pressure of the elastic cavity to facilitate the flotation bubbles to carry the easily floatable minerals to quickly overflow the overflow weir for discharge. The easily floatable minerals and light impurities that fall off the bubbles and are enriched below the liquid surface at the top of the overflow surface together with the mineralized bubbles will flow over the overflow weir more and faster into the overflow tank when the liquid level rises, and be discharged through the overflow port.

[0046] Furthermore, a concentrate regulating valve 1005 is fixedly connected to the bottom of the conical concentrator 1004 to control the concentration of the underflow slurry and output the concentrate slurry.

[0047] Furthermore, the concentrate regulating valve 1005 is electrically connected to a control circuit of the master controller.

[0048] When in use, the hydrophilic particles overcome the buoyancy and the impulse of the pulsating fluid under the action of the magnetic field and gravity and enter the bottom of the conical concentrator 1004 downwards, and after precipitation and concentration, they are discharged as concentrate through the concentrate regulating valve 1005. The master controller controls the opening and closing of the concentrate regulating valve 1005.

[0049] Furthermore, the bottom cone angle of the conical concentrator 1004 is between 15 degrees and 135 degrees.

[0050] Furthermore, the inner cylinder 100 is provided with a pulp concentration detector 1006, which is electrically connected to the master controller to collect the pulp concentration in real time. The master controller adjusts and controls various electrical control mechanisms of the equipment according to the pulp concentration.

[0051] Furthermore, the first elastic cavity 3006 is fixedly connected to a fluid conduit inserted and fixed at the lower part of the side wall of the inner tube 100 and the outer tube 1001, and the other end of the fluid conduit is connected to the first pulsation source;

[0052] Optionally, the second elastic cavity 4001 is disposed on or near the inner wall surface of the inner cylinder 100 and is fixedly connected to a fluid conduit inserted and fixed on the side wall of the inner cylinder 100 , and the other end of the fluid conduit is connected to the second pulsation source 4002 .

[0053] Optionally, the second elastic cavity 4001 is disposed on or near the inner wall surface of the inverted truncated cone 1002 and is fixedly connected to a fluid conduit inserted and fixed on the side wall of the inverted truncated cone 1002 , and the other end of the fluid conduit is connected to the second pulsation source 4002 .

[0054] Preferably, the first elastic cavity 3006 is a cylindrical cavity structure;

[0055] Optionally, the first elastic cavity 3006 is arranged at an axial position inside the equipment, for example, around the lower part of the bulk barrel 3003 .

[0056] Optionally, the second elastic cavity 4001 is a toroidal-like cavity structure, surrounding the inverted cone 1002 or the side wall of the inner cylinder 100 .

[0057] Optionally, the second elastic cavity 4001 is a distributed structure composed of a plurality of bag-shaped cavity structures, which are distributed inside the device, for example, evenly distributed around the inverted cone 1002 or the side wall of the inner cylinder 100 .

[0058] Furthermore, the first pulsation source and the second pulsation source 4002 are external fluid sources, and the fluid includes gas or liquid.

[0059] When in use, the elastic cavity pulsates, changing the shape of the internal space and the flow area of ​​the equipment, and the slurry flow inside the equipment pulsates and changes in flow rate. It can completely replace the technology of continuous flushing with rising water in the washing magnetic separator, enhance the cutting and magnetic pulling effect of the magnetic field on magnetic agglomerates or magnetic chains, achieve water saving and emission reduction, and enhance the technical effect of sorting concentrates.

[0060] Furthermore, a pulsation controller 4003 is fixedly connected to the fluid conduit; the pulsation controller 4003 controls the pulsation period and flow rate of the fluid entering or discharging the first elastic cavity 3006 or the second elastic cavity 4001 based on the first preset parameters, changes the deformation of the elastic cavity, and indirectly changes the flow state of the slurry in the equipment and the overflow surface height.

[0061] Preferably, the first preset parameter includes a preset period of fluid pulsation and a preset flow rate of fluid pulsation;

[0062] Further, the pulsation controller 4003 includes:

[0063] The inlet end of the pulsation controller is connected to the first pulsation source or the second pulsation source 4002 through a fluid conduit;

[0064] The automatic regulating valve 4004 has one end connected to the inlet of the pulsation controller and the other end connected to the automatic on-off valve 4005;

[0065] The other end of the automatic on-off valve 4005 is connected to the outlet end of the pulsation controller;

[0066] The controller 4006 outputs two control signals, one control signal is electrically connected to the automatic regulating valve 4004 for changing the preset flow rate of the fluid pulsation, and the other control signal is electrically connected to the automatic on-off valve 4005 for changing the preset period of the fluid pulsation.

[0067] Preferably, the on time of the automatic on-off valve 4005 is Ton, and the off time is Toff, Ton ≥ Toff,

[0068] Optionally, the preset period of fluid pulsation Ton+Toff≥Hf / Vb, wherein Hf is the height of the first elastic cavity 3006, and Vb is the rising speed of the bubble.

[0069] Optionally, 0.1s≤fluid pulsation pre-period Ton+Toff≤30s.

[0070] The outlet end of the pulsation controller is connected to the first elastic cavity 3006 or the second elastic cavity 4001 through a fluid conduit.

[0071] The pulsation controller 4003 is electrically connected to a control line of the master controller, specifically, the controller 4006 is electrically connected to a control line of the master controller.

[0072] Optionally, the two pulsation controllers 4003 controlling the first elastic cavity 3006 and the two pulsation controllers 4003 controlling the second elastic cavity 4001 are electrically connected to the control circuit of the master controller respectively or jointly, and are controlled by the master controller.

[0073] When in use, the "opening and closing" of the automatic on-off valve 4005 determines the "connection and disconnection" of the compressed air or liquid flow, and changing the "connection and disconnection" time can change the fluid pulsation cycle. Adjusting the opening of the automatic regulating valve 4004 can change the size of the fluid flow of the compressed air or liquid flow when it is "connected" and thus change the fluid pulsation amplitude. The adjustable flow of compressed gas or liquid entering or exiting the elastic cavity indirectly changes the slurry flow state and overflow surface height in the equipment. It can further adjust the amount of tailings formed by the non-magnetic or weakly magnetic mineral particles and the hydrophobic particle slurry attached to the bubbles passing over the overflow weir at the top of the magnetic flotation column cavity and entering the overflow tank.

[0074] The master controller controls the excitation coil and the pulsation controller to coordinate actions. When the pulsation action raises or lowers the slurry level in the equipment, the magnetic field strength is increased or decreased synchronously: that is, when the liquid level rises, the magnetic field is enhanced to suppress the overflow of particles with strong magnetism, and to facilitate the overflow of weak magnetic or non-magnetic tailings. When the liquid level drops, the magnetic field strength is appropriately reduced, which is conducive to the bottom weak magnetic minerals or poor intergrowths to break away from the entrainment and wrapping of strong magnetic magnetic agglomerates, and continue to move and gather rapidly to the overflow weir under the action of flotation reagents and rising bubbles. In particular, unlike ordinary static flotation devices, the present invention does not have the "stable foam layer" of traditional flotation methods, but uses an elastic cavity to generate slurry pulsation, so that the slurry flow pulsates upward and the overflow liquid level changes pulsatingly. The pulsation of the slurry flow enhances the flotation mineralization effect and the effect of the magnetic field on magnetic particles, non-magnetic particles and weak magnetic particles. The pulsating change of the overflow liquid level height allows the mineralized bubbles attached to the hydrophobic particles, as well as the hydrophobic particles and impurities enriched below the liquid surface after the bubbles burst, to have the opportunity to jump over the overflow weir in time and enter the overflow tank to form a continuous overflow, thereby enhancing the controllability of the flotation tailings.

[0075] Alternatively, if Figure 2 As shown, the inner cylinder 100 is provided with a bulk material barrel 3003, and a bulk material distributor 3004 is connected to the bottom of the bulk material barrel 3003; one side of the bulk material barrel 3003 is connected to the feed pipe 3008 of the feeding mechanism; the top of the bulk material barrel 3003 is not lower than the overflow trough 800 or the overflow weir 1003; the bulk material distributor 3004 is a conical structure, which is placed inside the inner cylinder 100 and higher than the top of the first elastic cavity 3006.

[0076] Alternatively, if Figure 1 As shown, a bulkhead 3004 is provided at the upper part of the inner cylinder 100 , and the top of the bulkhead 3004 is connected to the feeding pipe 3008 of the feeding mechanism; the bulkhead 3004 is higher than the top of the first elastic cavity 3006 and lower than the inverted frustum 1002 .

[0077] Preferably, if Figure 7The side view and top view of the bulk material loader shown in the figure shows that the bulk material loader 3004 includes: a distribution chamber 30032 in the center, the top of the distribution chamber 30032 is fixedly connected to the material delivery pipe 3008, and the outer periphery of the distribution chamber 30032 is symmetrically fixedly connected to a plurality of bulk material pipes 30031; the bulk material pipe 30031 is horizontally provided with a bulk material opening 30033 guided by a guide plate 30034.

[0078] Furthermore, the feeding mechanism includes: a mineralizer 600; a stirring motor 6001, which is inserted and fixedly connected to the center of the top of the mineralizer 600, and the stirring rod 6002 and the stirring impeller of the stirring motor 6001 are arranged inside the mineralizer 600; a feeding pipe 3001, which is inserted and fixedly connected to one side of the top of the mineralizer 600; a doser 700, which is inserted and fixedly connected to the other side of the top of the mineralizer 600; a feed pipe 3008, one side of which is fixedly connected to the bottom of the side wall of the mineralizer 600, and the other side is connected to the bulk barrel 3003 or the bulk feeder 3004; a feeding pump 3002, which is fixedly connected to the feed pipe 3008 to control the feeding speed.

[0079] Furthermore, the stirring motor 6001 is electrically connected to the control circuit of the master controller; the feeding pump 3002 is electrically connected to the control circuit of the master controller; and the dosing device 700 is electrically connected to the control circuit of the master controller.

[0080] When in use, the master controller adjusts the dosing concentration, stirring progress and feeding progress in real time, thus realizing the control of flotation reagent concentration, stirring progress and feeding progress.

[0081] Based on the collected pulp concentration detection data, the master controller controls the pulp concentration and inventory by regulating the feed pump 3002 and the concentrate regulating valve 1005. This solves the problem of "slurry running out of the flotation column (machine)" and "black ore running out of the washing magnetic separator", and improves the product recovery rate.

[0082] When in use, the ore pulp is injected into the mineralizer 600 through the feeding pipe 3001, and then the flotation agent is injected into the mineralizer 600 through the dosing device 700, and the ore pulp is mixed and stirred by the stirring rod 6002 and the stirring impeller of the stirring motor 6001. The feeding pump 3002 conveys the mixed ore pulp in the mineralizer 600 to the bulk barrel 3003 or the bulk container 3004 through the feeding pipe 3008.

[0083] Furthermore, the outer cylinder 1001 is fixedly connected to the outer periphery of the inner cylinder 100 ; an electromagnetic control box 1007 is fixedly connected to the upper portion of the outer wall of the outer cylinder 1001 , and the electromagnetic control box 1007 is electrically connected to the master controller and the excitation coil 200 .

[0084] Preferably, the excitation coils 200 are in multiple groups.

[0085] Furthermore, the master controller controls the electromagnetic control box 1007 to control the excitation coil 200 to generate a pulsating magnetic field in a downward direction based on the second preset parameters. The second preset parameters include a preset period of magnetic field pulsation and a preset intensity of magnetic field pulsation.

[0086] The magnetic field generated by the excitation coil 200 is synchronized with the pulsation generated by the first elastic cavity 3006 and is opposite to the buoyancy direction, guiding the strong magnetic minerals to settle downward and the weak magnetic and non-magnetic minerals to overflow upward.

[0087] Specifically, the direction of the magnetic field force generated by the excitation coil (200) is opposite to the direction of the bubble buoyancy, and the change of the magnetic field strength changes synchronously with the pulsation direction of the elastic cavity. When the pulsation of the elastic cavity raises the slurry level, the magnetic field strength increases synchronously, and similarly, when the pulsation of the elastic cavity lowers the slurry level, the magnetic field strength decreases synchronously, thereby enhancing the speed and efficiency of mineral separation.

[0088] When in use, under the condition that the pulsating ore pulp flow and the pulsating magnetic field are synchronized but the forces are opposite, the difference in the forces on the magnetic particles and non-magnetic impurities is amplified. When the volume of the elastic cavity expands, the internal volume of the equipment becomes smaller, the ore pulp is squeezed and the upward flow velocity increases, and synchronously, the magnetic field strength becomes stronger, and the magnetic particles are pulled by the downward magnetic field to increase, offsetting the buoyancy increased by the increase in the upward flow velocity, and continue to descend under the downward combined force of gravity, magnetic force, etc., and enter the bottom concentrate area and are discharged through the concentrate regulating valve 1005. Non-magnetic or weakly magnetic impurities are not affected or less affected by the downward magnetic force, and accelerate upward movement under the increased buoyancy, and enter the overflow tank more. At this time, the ore pulp liquid level in the overflow tank area becomes higher, which is more conducive to the impurities quickly crossing the overflow weir 10031 and finally overflowing to become tailings. On the contrary, when the volume of the elastic cavity becomes smaller, the internal volume of the equipment becomes larger, and the upward flow velocity of the ore pulp becomes smaller, which is conducive to the rapid sedimentation of the magnetic particles washed into the overflow tank and returning to the magnetic separation area of ​​the equipment. At this time, the slurry level in the overflow tank area is lowered, and the high-density magnetite is not easy to cross the overflow weir 10031 and enter the tailings. Simultaneously reducing the magnetic field intensity is conducive to solving the problems of impurity entrainment and magnetic inclusion caused by magnetic agglomeration of concentrate.

[0089] Furthermore, if Figures 1 to 3 As shown, a microbubble generating mechanism 500 is connected to the bottom of the conical concentrator 1004; the microbubble generating mechanism 500 includes a microbubble generator 5001, which is inserted and fixed on the side wall of the conical concentrator 1004, and the side of the microbubble generator 5001 with air holes is arranged inside the conical concentrator 1004 and / or inside the inner tube 100, and the other side is arranged outside the conical concentrator 1004 and fixedly connected to a gas separation tube 5002, one side of the gas separation tube 5002 is fixedly connected to a gas separation regulating valve 5003, and one side of the gas separation regulating valve 5003 is fixedly connected to a gas separation gas source 5004.

[0090] Preferably, there are a plurality of microbubble generators 5001 in a circular array and are interspersed and fixedly connected to the side wall of the conical concentrator 1004 .

[0091] Furthermore, the microbubble generator 5001 can be a venturi tube, an air gun, an aeration head or other microbubble generator, or a combination of multiple of these.

[0092] Preferably, the gas distribution regulating valve 5003 is electrically connected to the master controller, and the air intake volume is changed by the master controller or the number of branches is used to adjust the inflation volume.

[0093] When in use, the flotation reagent and the raw ore pulp are mixed and dispersed inside the equipment. When the mineral particles in the ore pulp collide with the microbubbles sprayed by the microbubble generator 5001, the hydrophobic mineral particles will adhere to the bubbles. The bubbles generated by the gas separation tube 5002 and the gas separation gas source 5004 are small and uniform in size, which helps to form stable mineralized bubbles to float.

[0094] In the equipment, magnetic minerals move downward under the action of the magnetic field, while non-magnetic minerals adhere to the bubbles and are separated from the magnetic minerals as the bubbles float upward.

[0095] Furthermore, under the action of the internal slurry flow pulsation and the surge effect of the liquid surface, the mineralized bubbles adhering to the hydrophobic particles, the hydrophobic particles enriched below the liquid surface and detached from the mineralized bubbles, and the slurry of other non-(weakly) magnetic hydrophilic impurities pass over the overflow weir at the top of the inner tube into the overflow tank and are discharged through the overflow port. The strongly magnetic minerals sink under the action of the magnetic field force to become concentrates. Adjusting the frequency and amplitude of the magnetic field and the pulsation of the slurry can prevent relatively high-density magnetic particles from overflowing over the overflow weir.

[0096] With the help of the elastic cavity, the surface of the flotation slurry fluctuates up and down, so that the mineralized bubbles attached to the hydrophobic particles and the hydrophobic particles enriched below the liquid surface after the bubbles burst jump over the overflow weir in the form of slurry + bubbles and enter the overflow tank to form a continuous overflow, thereby improving the flotation efficiency.

[0097] Embodiment 2

[0098] Based on the same technical concept as that of the first embodiment, on the basis of the first embodiment, as Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a magnetic flotation column device with a pulsating elastic cavity is provided with a material control mechanism 900 on the upper part of the bulk material barrel 3003.

[0099] The material control mechanism 900 includes a fixed cylinder 9001, which is connected and docked with the upper opening of the bulk material cylinder 3003, a feed cylinder 9002 is fixedly connected to the top of the fixed cylinder 9001, and slide plates 9003 are symmetrically arranged on the front and rear sides of the feed cylinder 9002, a fixed seat 9004 is fixedly connected to the top of the fixed cylinder 9001 near the surface, a feed motor 9005 is fixedly connected to the fixed seat 9004, and a first rotating shaft 9006 is symmetrically connected to the front and rear right side of the feed cylinder 9002, a first pulley 9008 is fixedly connected to the surface of the first rotating shaft 9006 near the right end, and a first rotating shaft 9006 is fixedly connected in the middle of the surface Gear 9007, the front and rear sides of the feed barrel 9002 are symmetrically fixedly connected with a fixed plate 9009 near the right side, the right side of the fixed plate 9009 is rotatably connected with a second rotating shaft 90011, the surface of the second rotating shaft 90011 is fixedly connected with a second pulley 90012 near the right end, a belt 90013 is sleeved between the first pulley 9008 and the second pulley 90012, the surface of the second rotating shaft 90011 is fixedly connected with a second gear 90014 near the left end, the slide plate 9003 is fixedly connected with an L block 90015 away from the surface of the feed barrel 9002, and the right side of the L block 90015 is fixedly connected with a rack 90016.

[0100] Furthermore, the feeding motor 9005 is electrically connected to the master controller, and the feeding speed and progress are controlled by the master controller.

[0101] Furthermore, grooves matching the slide plate 9003 are provided on the front and rear sides of the feed barrel 9002, and the surface of the slide plate 9003 penetrates and is slidably connected to the groove forward and backward, the second gear 90014 is meshed with the rack 90016, the two first gears 9007 are meshed with each other, and the output end of the feed motor 9005 is fixedly connected to the right end of the first rotating shaft 9006, and the first gear 9007 is meshed with the rack 90016; the outlet of the delivery pipe 3008 is connected through the upper end of the side wall of the feed barrel 9002.

[0102] When in use, the ore pulp is injected into the mineralizer 600 through the feeding pipe 3001, and then the flotation agent is injected into the mineralizer 600 through the doser 700, and the ore pulp is mixed and stirred by the stirring rod 6002 and the stirring impeller of the stirring motor 6001. The feeding pump 3002 conveys the mixed ore pulp in the mineralizer 600 to the feeding barrel 9002 through the feeding pipe 3008.

[0103] Then, the feeding motor 9005 is started to rotate the first rotating shaft 9006, and the first rotating shaft 9006 drives one of the first gears 9007 to rotate. Since the two first gears 9007 are meshed, the starting of the feeding motor 9005 will drive the two first rotating shafts 9006 to rotate, thereby driving the two first pulleys 9008 to rotate towards each other. The two first pulleys 9008 each make the two second pulleys 90012 rotate towards each other through the cooperation of the belt 90013, thereby driving the two second rotating shafts 90011 to rotate towards each other, and then driving the two second gears 90014 to rotate towards each other. Since the second gear 90014 is meshed with the rack 90016, it will drive the two racks 90016 to move towards each other, thereby driving the two slides 9003 to move towards each other, increasing the distance between the two slides 9003, so that the slurry conveying speed can be controlled.

[0104] It should be noted that, in this article, relational terms such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. "Several" refers to a quantity of 1 or more.

[0105] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A magnetic flotation column device with a pulsating elastic cavity, characterized in that: The device comprises an inner cylinder (100); An excitation coil (200) is fixedly connected to the periphery of the inner cylinder (100), and an outer cylinder (1001) is arranged on the periphery of the excitation coil (200); A conical concentrator (1004) is fixedly connected to the bottom of the inner cylinder (100); A first elastic cavity (3006) is coaxially and fixedly disposed at the axial center of the inner cylinder (100); The second elastic cavity (4001) is arranged on the inner side wall of the device.

2. The magnetic flotation column device with a pulsating elastic cavity according to claim 1 is characterized in that: A balancing column (3007) is coaxially fixedly disposed at the axial center of the inner cylinder (100); the first elastic cavity (3006) is fixedly connected to the outer side wall of the balancing column (3007); The device further comprises a master controller, which is arranged outside the outer cylinder (1001) and is used to control various electric control mechanisms of the device, wherein the electric control mechanisms comprise a control excitation coil (200), a first elastic cavity (3006) and a second elastic cavity (4001); An inverted truncated cone (1002) is fixedly connected to the top of the inner cylinder (100); The inverted truncated cone (1002) is a structure with a uniform cross section or a structure with a cross section gradually expanding from bottom to top, or a combination of a structure with a uniform cross section and a structure with a cross section gradually expanding from bottom to top. The top of the inverted truncated cone (1002) is fixedly connected to an overflow weir (1003), the periphery of the overflow weir (1003) is fixedly connected to an overflow trough (800), and one side of the overflow trough (800) is provided with an overflow port (8001); A concentrate regulating valve (1005) is fixedly connected to the bottom of the conical concentrator (1004); the concentrate regulating valve (1005) is electrically connected to a control circuit of a master controller; The bottom cone angle of the conical concentrator (1004) is between 15 degrees and 135 degrees; The inner cylinder (100) is provided with a slurry concentration detector (1006) which is electrically connected to the master controller.

3. The magnetic flotation column device with a pulsating elastic cavity according to claim 2 is characterized in that: The first elastic cavity (3006) is fixedly connected to a fluid conduit inserted and fixed at the lower part of the side wall of the inner tube (100) and the outer tube (1001), and the other end of the fluid conduit is connected to the first pulsation source; The second elastic cavity (4001) is arranged on or near the inner wall surface of the inner cylinder (100), and is fixedly connected to a fluid conduit inserted and fixed on the side wall of the inner cylinder (100), and the other end of the fluid conduit is connected to a second pulsation source (4002); Alternatively, the second elastic cavity (4001) is disposed on or near the inner wall surface of the inverted truncated cone (1002), and is fixedly connected to a fluid conduit inserted and fixed on the side wall of the inverted truncated cone (1002), and the other end of the fluid conduit is connected to the second pulsation source (4002); The first elastic cavity (3006) is a cylindrical cavity structure; The second elastic cavity (4001) is a toroidal cavity structure, or the second elastic cavity (4001) is a distributed structure composed of a plurality of bag-shaped cavity structures, which are distributed inside the device; The first pulsation source and the second pulsation source (4002) are external fluid sources, and the fluid includes gas or liquid; The fluid conduit is fixedly connected to a pulsation controller (4003); the pulsation controller (4003) controls the pulsation period and flow rate of the fluid entering or exiting the first elastic cavity (3006) or the second elastic cavity (4001) based on a first preset parameter, changes the deformation of the elastic cavity, and indirectly changes the slurry flow state and overflow surface height in the device; The first preset parameters include a preset period of fluid pulsation and a preset flow rate of fluid pulsation; The pulsation controller (4003) comprises: The inlet end of the pulsation controller is connected to the first pulsation source or the second pulsation source (4002) through a fluid conduit; An automatic regulating valve (4004), one end of which is connected to the inlet of the pulsation controller, and the other end of which is connected to the automatic on-off valve (4005); The other end of the automatic on-off valve (4005) is connected to the outlet end of the pulsation controller; A controller (4006) outputs two control signals, one control signal is electrically connected to the automatic regulating valve (4004) for changing the preset flow rate of the fluid pulsation, and the other control signal is electrically connected to the automatic on-off valve (4005) for changing the preset period of the fluid pulsation; The outlet end of the pulsation controller is connected to the first elastic cavity (3006) or the second elastic cavity (4001) through a fluid conduit; Two pulsation controllers (4003) for controlling the first elastic cavity (3006) and the second elastic cavity (4001) are electrically connected to the control circuit of the master controller; The preset period of fluid pulsation is Ton+Toff, Ton+Toff≥Hf / Vb, Wherein, Ton is the on time of the automatic on-off valve (4005), Toff is the off time of the automatic on-off valve (4005), Hf is the height of the first elastic cavity (3006), and Vb is the floating speed of the bubbles in the slurry; 0.1s≤fluid pulsation preset period≤30s.

4. The magnetic flotation column device with a pulsating elastic cavity according to claim 3 is characterized in that: The inner cylinder (100) is provided with a bulk material cylinder (3003), and a bulk material distributor (3004) is connected to the bottom of the bulk material cylinder (3003); one side of the bulk material cylinder (3003) is connected to a material delivery pipe (3008) of a feeding mechanism; The top of the bulk material barrel (3003) is not lower than the overflow trough (800) or the overflow weir (1003); The bulk material distributor (3004) is a conical structure, and is placed inside the inner cylinder (100) and higher than the top of the first elastic cavity (3006).

5. The magnetic flotation column device with a pulsating elastic cavity according to claim 3 is characterized in that: A bulk material distributor (3004) is provided at the upper part of the inner cylinder (100), and the top of the bulk material distributor (3004) is connected to a feeding pipe (3008) of a feeding mechanism; The bulkhead (3004) is higher than the top of the first elastic cavity (3006) and lower than the inverted frustum (1002); The bulk material distributor (3004) comprises: a material distribution chamber (30032) at the center, the top of the material distribution chamber (30032) is fixedly connected to a material delivery pipe (3008), and the periphery of the material distribution chamber (30032) is symmetrically fixedly connected to a plurality of bulk material pipes (30031); the bulk material pipe (30031) is horizontally provided with a bulk material opening (30033) guided by a guide plate (30034).

6. A magnetic flotation column device with a pulsating elastic cavity according to claim 4 or 5, characterized in that: The feeding mechanism comprises: Mineralizer (600); A stirring motor (6001) is inserted and fixedly connected to the center of the top of the mineralizer (600), and a stirring rod (6002) and a stirring impeller of the stirring motor (6001) are arranged inside the mineralizer (600); A feeding pipe (3001) is inserted and fixedly connected to one side of the top of the mineralizer (600); A doser (700) is inserted and fixedly connected to the other side of the top of the mineralizer (600); A material delivery pipe (3008), one side of which is fixedly connected to the bottom of the side wall of the mineralizer (600), and the other side of which is connected to the bulk material barrel (3003) or the bulk material container (3004); A feeding pump (3002) is fixedly connected to the feeding pipe (3008) to control the feeding speed; The stirring motor (6001) is electrically connected to the control circuit of the master controller; The feed pump (3002) is electrically connected to a control circuit of the master controller; The drug adding device (700) is electrically connected to a control circuit of the master controller.

7. The magnetic flotation column device with a pulsating elastic cavity according to claim 2, characterized in that: The outer cylinder (1001) is fixedly connected to the periphery of the inner cylinder (100); an electromagnetic control box (1007) is fixedly connected to the upper portion of the outer wall of the outer cylinder (1001), and the electromagnetic control box (1007) is electrically connected to the master controller and the excitation coil (200); the excitation coil (200) is in multiple groups; The master controller controls the electromagnetic control box (1007) to control the excitation coil (200) to generate a pulsating magnetic field with a downward direction based on a second preset parameter; The second preset parameters include a preset period of magnetic field pulsation and a preset intensity of magnetic field pulsation; The magnetic field effect generated by the excitation coil (200) is synchronized with the pulsation effect generated by the first elastic cavity (3006) and is opposite to the buoyancy direction, guiding the strong magnetic minerals to settle downward and the weak magnetic or non-magnetic minerals to overflow upward.

8. The magnetic flotation column device with a pulsating elastic cavity according to claim 2, characterized in that: The bottom of the conical concentrator (1004) is connected to a microbubble generating mechanism (500); the microbubble generating mechanism (500) comprises a microbubble generator (5001), the microbubble generator (5001) is inserted and fixed on the side wall of the conical concentrator (1004), the side of the microbubble generator (5001) with air holes is arranged inside the conical concentrator (1004) and / or inside the inner cylinder (100), and the other side is arranged outside the conical concentrator (1004) and fixedly connected to a gas separation tube (5002), one side of the gas separation tube (5002) is fixedly connected to a gas separation regulating valve (5003), and one side of the gas separation regulating valve (5003) is fixedly connected to a gas separation gas source (5004); The gas distribution regulating valve (5003) is electrically connected to the master controller; There are a plurality of microbubble generators (5001) arranged in a circular array and are interspersed and fixedly connected to the side wall of the conical concentrator (1004).

9. The magnetic flotation column device with a pulsating elastic cavity according to claim 4, characterized in that: A material control mechanism (900) is provided on the upper part of the bulk material barrel (3003); The material control mechanism (900) comprises a fixed cylinder (9001), the fixed cylinder (9001) is connected and docked with the upper opening of the bulk material cylinder (3003), a feeding cylinder (9002) is fixedly connected to the top of the fixed cylinder (9001), slide plates (9003) are symmetrically arranged on the front and rear sides of the feeding cylinder (9002), a fixed seat (9004) is fixedly connected to the top of the fixed cylinder (9001) near the surface, a feeding motor (9005) is fixedly connected to the fixed seat (9004), a first rotating shaft (9006) is symmetrically connected to the right side of the feeding cylinder (9002) for rotation, a first pulley (9008) is fixedly connected to the surface of the first rotating shaft (9006) near the right end, and a first gear (9007) is fixedly connected to the middle of the surface of the first rotating shaft (9006) The feed barrel (9002) is symmetrically fixedly connected with a fixed plate (9009) on both sides thereof, near the right side, and the fixed plate (9009) is rotatably connected with a second rotating shaft (90011) on the right side; a second pulley (90012) is fixedly connected to the surface of the second rotating shaft (90011) near the right end; a belt (90013) is sleeved between the first pulley (9008) and the second pulley (90012); a second gear (90014) is fixedly connected to the surface of the second rotating shaft (90011) near the left end; an L block (90015) is fixedly connected to the surface of the slide plate (9003) away from the feed barrel (9002); a rack (90016) is fixedly connected to the right side of the L block (90015); and the feed motor (9005) is electrically connected to the master controller.

10. The magnetic flotation column device with a pulsating elastic cavity according to claim 9, characterized in that: The front and rear sides of the feed barrel (9002) are provided with grooves matching the slide plate (9003), and the surface of the slide plate (9003) penetrates and is slidably connected to the groove, the second gear (90014) is meshed with the rack (90016), the two first gears (9007) are meshed with each other, the output end of the feed motor (9005) is fixedly connected to the right end of the first rotating shaft (9006), and the first gear (9007) is meshed with the rack (90016); the outlet of the delivery pipe (3008) is interlaced and connected with the upper end of the side wall of the feed barrel (9002).

Images