Lithium mica flotation wastewater treatment device and flotation process

Abstract

The application provides a lithium mica flotation wastewater treatment device and a flotation process, and relates to the technical field of wastewater treatment.The device comprises an oxidation reaction tank, a multi-point adding mechanism and a swing mechanism.The multi-point adding mechanism comprises a mounting plate, a liquid outlet pipe and a two-way threaded screw rod.The two sides of the mounting plate are fixedly connected with the inner wall of the oxidation reaction tank.The top of the mounting plate is fixedly provided with a sliding rail.The surface of the sliding rail is slidingly connected with a moving seat.The scheme can add ferrous sulfate and hydrogen peroxide into the flotation wastewater when treating the lithium mica flotation wastewater containing amide oxime, so as to destroy the oxime group and the amino group of the amide oxime, release the complex heavy metals, degrade the macromolecular organic matter, ensure that the heavy metals are completely separated, avoid that the heavy metals in the effluent exceed the standard, gradually add the hydrogen peroxide through multiple points, avoid that the local concentration is too high to cause violent boiling, spray the hydrogen peroxide from the inner side to avoid that the hydrogen peroxide is directly sprayed downward, and the hydrogen peroxide is settled to the bottom of the tank under the action of gravity, so that the liquid surface is not violently boiled.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of wastewater treatment, and particularly relates to a lepidolite flotation wastewater treatment device and a flotation process. BACKGROUND

[0002] In the process of extracting lithium from lepidolite, flotation is usually used to separate lepidolite from gangue minerals to improve the grade of lithium concentrate and provide raw materials for subsequent lithium extraction. However, a large amount of wastewater is generated during the lepidolite flotation process, and the wastewater mainly contains flotation reagent residues, mineral dissolution components and suspended solids. If the untreated wastewater is directly discharged, it will cause water pollution and soil pollution.

[0003] In related technologies, the lepidolite flotation wastewater contains flotation reagent residues, which need to be treated by a wastewater treatment device before being discharged. However, the existing lepidolite flotation wastewater treatment device is not convenient for effective treatment of amide oxime-containing lepidolite flotation wastewater. The molecular structure of amide oxime collector contains oxime groups and amino groups, has strong chelating ability, is easy to form stable complexes with lithium, aluminum and other metal ions, is difficult to biodegrade, and can interfere with heavy metal precipitation, resulting in excessive heavy metals in the effluent.

[0004] Therefore, it is necessary to provide a lepidolite flotation wastewater treatment device and a flotation process to solve the above technical problems. SUMMARY

[0005] The present application provides a lepidolite flotation wastewater treatment device and a flotation process, which solves the technical problem that the existing lepidolite flotation wastewater treatment device in related technologies is not convenient for effective treatment of amide oxime-containing lepidolite flotation wastewater.

[0006] To solve the above technical problems, the lepidolite flotation wastewater treatment device provided by the present application comprises an oxidation reaction tank, a multi-point dosing mechanism and a swing mechanism;

[0007] The multi-point dosing mechanism comprises a mounting plate, a liquid outlet pipe and a two-way threaded screw rod, the two sides of the mounting plate are fixedly connected with the inner wall of the oxidation reaction tank, the top of the mounting plate is fixedly provided with a sliding rail, the surface of the sliding rail is slidingly connected with a moving seat, and the front end of the liquid outlet pipe is rotatably connected with the moving seat.

[0008] The swing mechanism comprises a key rod sleeve, a gear and two limiting supports, the surface of the key rod sleeve is rotatably connected with the inner side of the moving seat, the key rod sleeve is connected with the front end key groove of the liquid outlet pipe, the surface of the key rod sleeve is connected with the limiting sleeve rod, the front surface of the key rod sleeve is fixedly connected with the back surface of the gear, the top of the mounting plate is sequentially fixedly provided with a second toothed plate and a first toothed plate from front to back, and the two limiting supports are fixedly connected with the two sides of the top of the mounting plate, respectively.

[0009] Preferably, the two ends of the bidirectional threaded screw rod are rotationally connected to the inner side of the oxidation reaction tank, the surface of the bidirectional threaded screw rod is threadedly connected with a screw block, the top of the screw block is fixedly connected with the bottom of the moving seat, and the surface of the liquid outlet pipe is communicated with a plurality of nozzles.

[0010] Preferably, the surface of each of the two limiting supports is provided with a guide groove, which is used in cooperation with the limiting sleeve rod to adjust the position of the limiting sleeve rod in the moving seat, and the front and back positions of the key rod sleeve and the gear are adjusted by adjusting the position of the limiting sleeve rod in the moving seat.

[0011] Preferably, the inner wall of the oxidation reaction tank is transversely rotationally connected with a mixing mechanism, the mixing mechanism comprises a rotating rod rotationally connected to the inner wall of the oxidation reaction tank, a plurality of mixing frames are fixedly arranged on the surface of the rotating rod, and the right side of the oxidation reaction tank is provided with a driving motor for driving the rotating rod to rotate.

[0012] Preferably, the left end of the rotating rod is fixedly provided with a transmission mechanism, the transmission mechanism comprises two belt pulleys fixedly arranged on the left end of the rotating rod and the bidirectional threaded screw rod, a transmission belt is sleeved on the surfaces of the two belt pulleys, and the left side of the oxidation reaction tank is fixedly provided with a protective shell.

[0013] Preferably, the left end of the rotating rod is fixedly provided with a negative pressure suction mechanism, the negative pressure suction mechanism comprises a driving gear fixedly arranged on the left end of the rotating rod, the left side of the oxidation reaction tank is rotationally connected with a driven gear through a rotating shaft, the driving gear is engaged with the driven gear, the left side of the driven gear is fixedly provided with a cam, the surface of the cam is rotationally connected with a connecting rod, the top of the connecting rod is rotationally connected with a suction rod, the top end of the suction rod is fixedly provided with a piston, the left side of the oxidation reaction tank is fixedly provided with a suction pipe, and the surface of the piston is slidably connected with the inner side of the suction pipe.

[0014] Preferably, the bottom of the mounting plate is fixedly provided with a detection mechanism, the detection mechanism comprises a connecting plate fixedly arranged on the bottom of the mounting plate, a sliding block is slidably connected to the inner side of the connecting plate, a rotating wheel is rotationally connected to the back of the sliding block, a connecting support is fixedly arranged on the front of the sliding block, a detector is arranged in the inner side of the connecting support, a spring is fixedly arranged in the inner side of the connecting plate, and a convex plate is fixedly arranged on the bottom of the screw block.

[0015] Preferably, the top of the oxidation reaction tank is provided with a sealing plate, the top of the sealing plate is provided with two storage boxes, the inner wall of the oxidation reaction tank is fixedly provided with two mounting frames, the inner side of each of the two mounting frames is provided with an ultraviolet lamp, the bottom of the oxidation reaction tank is communicated with a drain pipe, the left side of the oxidation reaction tank is fixedly provided with a protective frame, and the bottom of the oxidation reaction tank is fixedly provided with a plurality of supporting legs.

[0016] A lithium mica flotation process, comprising the following steps:

[0017] Step S1, preparing an amide oxime collector compound:

[0018] The aldoxime, water and catalyst are introduced into a Teflon-capped sealed tube under a nitrogen atmosphere, the reaction mixture is stirred at 100 degrees Celsius for three hours, and the reaction process is monitored by periodically collecting samples;

[0019] Dissolved in dichloromethane and analyzed by GC, the solvent is concentrated under reduced pressure, and the crude reaction mixture is purified by column chromatography on silica gel using methanol or dichloromethane as eluent to obtain the product;

[0020] Step S2, preparing a mixed flotation agent:

[0021] 30-60% of the amide oxime collector compound, 15-35% of the cationic collector, 1-3% of the pH adjuster, 1-10% of the antioxidant, and 10-50% of the solvent;

[0022] Step S3, flotation:

[0023] The concentrate after magnetic separation is poured into a flotation tank, the pH of the ore slurry is adjusted by acid and alkali, the mixed flotation agent is slowly added, after stirring for 10 min, the rougher is opened, and the rougher concentrate and the rougher tailings are obtained, the rougher tailings are added to the flotation agent for scavenging, and the scavenging middlings and the scavenging tailings are obtained, and the scavenging middlings are returned to the rougher for re-flotation;

[0024] The flotation agent is added again to the rougher concentrate obtained by roughing and the scavenging middlings, and the first cleaning is carried out, to obtain the first cleaning middlings and the first cleaning concentrate, the first cleaning middlings are returned to the rougher, the first cleaning concentrate is subjected to the second cleaning, and after stirring after adding the flotation agent, the concentrate participates in the next flotation, and the middlings are returned to the previous flotation operation, to obtain the lithium mica concentrate;

[0025] Step S4, wastewater treatment:

[0026] The pH value of the pretreated flotation wastewater is adjusted to 2.5-3.5, ferrous sulfate is added as a catalyst, and the reaction is stirred for fifteen minutes, then hydrogen peroxide is gradually added to the oxidation reaction tank through multiple points by a nozzle, the adding mode is combined with inside spraying and swinging spraying, after the reaction is completed, neutralization and precipitation treatment is carried out, free heavy metals are deeply removed, and organic matter is deeply degraded and treated.

[0027] Compared with the related art, the lithium mica flotation wastewater treatment device and the flotation process provided by the present application have the following beneficial effects:

[0028] When treating flotation wastewater containing ammonium oximes from lithium mica, ferrous sulfate and hydrogen peroxide are added to the wastewater to break down the oxime and amino groups of the ammonium oximes, release complexed heavy metals, degrade macromolecular organic matter, ensure the complete release of heavy metals, and prevent excessive heavy metal levels in the effluent. A multi-point, gradual addition of hydrogen peroxide is used to avoid localized over-concentration leading to violent boiling. Spraying is done from the inside to prevent direct downward spraying of hydrogen peroxide, which would cause it to settle to the bottom of the tank under gravity and cause violent boiling. When switching the injection point to the right, the gear contacts the first toothed plate, causing the key rod sleeve to rotate clockwise, driving the outlet pipe and nozzle to oscillate and add hydrogen peroxide clockwise. When switching the injection point to the left, the gear contacts the second toothed plate, causing the key rod sleeve to rotate counterclockwise, driving the outlet pipe and nozzle to oscillate and add hydrogen peroxide counterclockwise, increasing the contact area between hydrogen peroxide and the flotation wastewater. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0030] Figure 1 The optimal structural schematic diagram provided for this invention;

[0031] Figure 2 This is a schematic diagram of the structure of the oxidation reaction tank provided by the present invention, viewed from the left side.

[0032] Figure 3 for Figure 1 The diagram shows a cross-sectional view of the oxidation reaction tank.

[0033] Figure 4 A schematic diagram of the structure of the multi-point dosing mechanism and the swing mechanism provided by the present invention;

[0034] Figure 5 for Figure 4 The enlarged structural diagram at point A is shown below;

[0035] Figure 6 for Figure 4 The diagram shows the structure of the outlet pipe;

[0036] Figure 7 The diagram shows the state in which the movable seat provided by the present invention moves to the right, and after the gear contacts the first toothed plate, the liquid outlet pipe is driven to rotate clockwise through the key rod sleeve.

[0037] Figure 8The state diagram that the mobile seat provided by the application moves to the left, and the convex plate is about to contact the rotating wheel;

[0038] Figure 9 The state diagram that the mobile seat provided by the application moves to the left, and the convex plate is about to contact the rotating wheel;

[0039] Figure 10 The structure diagram of the mixing mechanism provided by the application;

[0040] Figure 11 The structure diagram of the transmission mechanism provided by the application;

[0041] Figure 12 The structure diagram of the negative pressure suction mechanism provided by the application;

[0042] Figure 13 The structure diagram of the negative pressure suction mechanism provided by the application; Figure 12 The structure diagram of the negative pressure suction mechanism provided by the application;

[0043] Figure 14 The structure diagram of the detection mechanism provided by the application;

[0044] Figure 15 The structure diagram of the detection mechanism provided by the application; Figure 14 The structure diagram of the detection mechanism provided by the application;

[0045] Figure 16 The state diagram that the screw block provided by the application moves to the left, and the convex plate is about to contact the rotating wheel;

[0046] Figure 17 The synthesis flow chart of benzyl amide oxime provided by the application.

[0047] Explanation of reference numerals:

[0048] 1, oxidation reaction tank;

[0049] 2, multi-point adding mechanism; 21, mounting plate; 22, liquid outlet pipe; 23, two-way threaded screw rod; 24, sliding rail; 25, mobile seat; 26, screw block; 27, spray head;

[0050] 3, swing mechanism; 31, key rod sleeve; 32, gear; 33, limiting support; 34, limiting sleeve rod; 35, second toothed plate; 36, first toothed plate;

[0051] 4, mixing mechanism; 41, rotating rod; 42, mixing frame; 43, driving motor;

[0052] 5, transmission mechanism; 51, pulley; 52, transmission belt; 53, protective shell;

[0053] 6, negative pressure suction mechanism; 61, driving gear; 62, driven gear; 63, cam; 64, connecting rod; 65, suction rod; 66, piston; 67, suction pipe;

[0054] 7, detection mechanism; 71, connecting plate; 72, slider; 73, rotating wheel; 74, connecting support; 75, detector; 76, spring; 77, lug plate;

[0055] 8, sealing plate; 9, storage box; 10, mounting frame; 11, ultraviolet lamp; 12, drain pipe; 13, protective frame; 14, supporting leg.

[0056] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0057] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the present application.

[0058] The present application provides a lithium mica flotation wastewater treatment device and flotation process.

[0059] First embodiment:

[0060] Please refer to Figures 1 to 9 A lithium mica flotation wastewater treatment device, comprising an oxidation reaction tank 1, a multi-point dosing mechanism 2 and a swing mechanism 3.

[0061] The multi-point dosing mechanism 2 comprises a mounting plate 21, a liquid outlet pipe 22 and a bidirectional threaded screw rod 23, the two sides of the mounting plate 21 are fixedly connected with the inner wall of the oxidation reaction tank 1, the top of the mounting plate 21 is fixedly provided with a sliding rail 24, the surface of the sliding rail 24 is slidingly connected with a moving seat 25, and the front end of the liquid outlet pipe 22 is rotatably connected with the moving seat 25.

[0062] The two ends of the bidirectional threaded screw rod 23 are rotatably connected with the inner side of the oxidation reaction tank 1, the surface of the bidirectional threaded screw rod 23 is threadedly connected with a screw block 26, the top of the screw block 26 is fixedly connected with the bottom of the moving seat 25, and the surface of the liquid outlet pipe 22 is communicated with a plurality of spray heads 27.

[0063] Please combine Figure 4: The rotation of the bidirectional threaded rod 23 drives the screw block 26 to move to the right, the movement of the screw block 26 to the right drives the moving seat 25 to move to the right, the moving seat 25 moves to the right, and then drives the liquid outlet pipe 22 and the spray head 27 to move to the left, so as to adjust the working position of the spray head 27;

[0064] Preferably, the spray head 27 is used for spraying hydrogen peroxide, the pH value of the flotation wastewater is adjusted to 2.5-3.5 before spraying hydrogen peroxide, then ferrous sulfate is added as a catalyst, and stirring is carried out for 15 minutes, the spray head 27 is added in a multi-point gradual manner, and the adding points are the left side, the middle and the right side of the oxidation reaction tank 1;

[0065] The swing mechanism 3 comprises a key rod sleeve 31, a gear 32 and two limiting supports 33, the surface of the key rod sleeve 31 is rotationally connected with the inner side of the moving seat 25, the key rod sleeve 31 is connected with the front end key groove of the liquid outlet pipe 22, the surface of the key rod sleeve 31 is clamped with a limiting sleeve rod 34, the front surface of the key rod sleeve 31 is fixedly connected with the back surface of the gear 32, the top of the mounting plate 21 is sequentially and fixedly provided with a second tooth plate 35 and a first tooth plate 36 from front to back, and the two limiting supports 33 are respectively fixedly connected with the two sides of the top of the mounting plate 21;

[0066] Please combine Figures 4 to 9 : When the moving seat 25 moves to the right, the gear 32 will be in contact with the first tooth plate 36, and under the action of the first tooth plate 36, the gear 32 drives the liquid outlet pipe 22 and the spray head 27 to rotate clockwise through the key rod sleeve 31, so as to adjust the spraying angle of the spray head 27, increase the contact area of hydrogen peroxide and flotation wastewater, and rotate the spray head 27 to the left side, when the moving seat 25 continuously moves to the right, the limiting sleeve rod 34 is in contact with the right limiting support 33, under the action of the limiting support 33, the limiting sleeve rod 34 drives the key rod sleeve 31 to slide forward in the inner side of the moving seat 25, the key rod sleeve 31 moves, thereby driving the gear 32 to move forward, and after moving, hydrogen peroxide is sprayed and added from the right adding point once;

[0067] Further, when the moving seat 25 moves to the right adding point and then moves to the left, the gear 32 will be in contact with the second tooth plate 35 in the moving process, under the action of the second tooth plate 35, the gear 32 drives the liquid outlet pipe 22 and the spray head 27 to rotate counterclockwise through the key rod sleeve 31, so as to swing and spray hydrogen peroxide, and rotate the spray head 27 to the right side, when the moving seat 25 continuously moves to the left, the limiting sleeve rod 34 is in contact with the left limiting support 33, under the action of the limiting support 33, the limiting sleeve rod 34 drives the key rod sleeve 31 and the gear 32 to move backward, so as to reset the position of the gear 32, when the moving seat 25 moves to the left adding point, hydrogen peroxide is sprayed and added to the right side through the spray head 27;

[0068] Preferably, through the clamping design between the limiting sleeve rod 34 and the key rod sleeve 31, the key rod sleeve 31 can rotate inside the limiting sleeve rod 34, and when the limiting sleeve rod 34 moves forward and backward, the key rod sleeve 31 will also move forward and backward at the same time;

[0069] The surfaces of the two limiting supports 33 are provided with guide grooves, which are used in cooperation with the limiting sleeve rod 34 to adjust the position of the limiting sleeve rod 34 in the moving seat 25. By adjusting the position of the limiting sleeve rod 34 in the moving seat 25, the forward and backward positions of the key rod sleeve 31 and the gear 32 are further adjusted.

[0070] In the present embodiment, unlike the existing flotation wastewater treatment device, when treating lithium mica flotation wastewater containing amide oxime, ferrous sulfate and hydrogen peroxide are added to the flotation wastewater, thereby destroying the oxime group and amino group of amide oxime, releasing complex heavy metals, degrading macromolecular organic matter, ensuring that heavy metals are completely free, avoiding excessive heavy metals in effluent, and adopting multi-point gradual hydrogen peroxide addition to avoid local over-concentration leading to violent boiling. When spraying, the inside is sprayed to avoid direct downward spraying of hydrogen peroxide, which settles to the bottom of the pool under the action of gravity, causing violent boiling of the liquid surface. When switching to the right drop point, the gear 32 is in contact with the first tooth plate 36, causing the key rod sleeve 31 to drive the outlet pipe 22 and the nozzle 27 to rotate clockwise, causing the hydrogen peroxide to oscillate clockwise. When switching to the left drop point, the gear 32 is in contact with the second tooth plate 35, causing the key rod sleeve 31 to drive the outlet pipe 22 and the nozzle 27 to rotate counterclockwise, causing the hydrogen peroxide to oscillate counterclockwise, increasing the contact area between the hydrogen peroxide and the flotation wastewater.

[0071] Second embodiment:

[0072] Please refer to Figure 3 , Figure 10 and Figure 11 , the inner wall of the oxidation reaction tank 1 is transversely rotatably connected with a mixing mechanism 4, the mixing mechanism 4 includes a rotating rod 41 rotatably connected to the inner wall of the oxidation reaction tank 1, a plurality of mixing frames 42 are fixedly arranged on the surface of the rotating rod 41, and a driving motor 43 is arranged on the right side of the oxidation reaction tank 1 for driving the rotating rod 41 to rotate;

[0073] Please refer to Figure 10 : start the driving motor 43, the driving motor 43 drives the rotating rod 41 to rotate, and the rotating rod 41 drives the mixing frame 42 to rotate, thereby mixing the flotation wastewater and the reagent.

[0074] The left end of the rotating rod 41 is fixedly provided with a transmission mechanism 5, the transmission mechanism 5 includes two belt pulleys 51 fixedly arranged on the left end of the rotating rod 41 and the bidirectional threaded rod 23, a transmission belt 52 is arranged on the surfaces of the two belt pulleys 51, and a protective shell 53 is fixedly arranged on the left side of the oxidation reaction tank 1.

[0075] Please combine Figure 11 : when the rotating rod 41 rotates, the bottom pulley 51 is driven to rotate, and the bottom pulley 51 drives the top pulley 51 to rotate through the transmission belt 52, and the top pulley 51 drives the bidirectional threaded rod 23 to rotate.

[0076] In this embodiment, by starting the driving motor 43, the driving motor 43 drives the mixing frame 42 to rotate through the rotating rod 41, so as to mix the flotation wastewater and the reagent. When the rotating rod 41 rotates, the bottom pulley 51 is driven to rotate, and the bottom pulley 51 drives the top pulley 51 to rotate through the transmission belt 52, and the top pulley 51 drives the bidirectional threaded rod 23 to rotate.

[0077] Third embodiment:

[0078] Please refer to Figure 1 、 Figure 2 、 Figures 12 to 16 , the left end of the rotating rod 41 is fixedly provided with a negative pressure suction mechanism 6, the negative pressure suction mechanism 6 includes a driving gear plate 61 fixedly provided on the left end of the rotating rod 41, the left side of the oxidation reaction tank 1 is rotatably connected with a driven gear 62 through a rotating shaft, the driving gear plate 61 is engaged with the driven gear 62, the left side of the driven gear 62 is fixedly provided with a cam 63, the surface of the cam 63 is rotatably connected with a connecting rod 64, the top of the connecting rod 64 is rotatably connected with a suction rod 65, the top end of the suction rod 65 is fixedly provided with a piston 66, the left side of the oxidation reaction tank 1 is fixedly provided with a suction pipe 67, the surface of the piston 66 is slidably connected with the inner side of the suction pipe 67;

[0079] Please combine Figure 12 and Figure 13 : when the rotating rod 41 rotates, the driving gear plate 61 is driven to rotate, the driving gear plate 61 drives the driven gear 62 to rotate, the driven gear 62 drives the cam 63 to rotate, the cam 63 drives the suction rod 65 to move up and down through the connecting rod 64, and the suction rod 65 drives the piston 66 to move up and down in the suction pipe 67, and then the harmful gas in the oxidation reaction tank 1 is extracted;

[0080] Preferably, the top of the suction pipe 67 is communicated with a suction pipe, the suction pipe is communicated with the oxidation reaction tank 1, the rear side of the suction pipe 67 is communicated with an exhaust pipe, and the exhaust pipe is communicated with a gas treatment device;

[0081] The bottom of the mounting plate 21 is fixedly provided with a detection mechanism 7, the detection mechanism 7 comprises a connecting plate 71 fixedly provided on the bottom of the mounting plate 21, a sliding block 72 slidably connected to the inner side of the connecting plate 71, a rotating wheel 73 rotatably connected to the back of the sliding block 72, a connecting bracket 74 fixedly provided on the front of the sliding block 72, a detector 75 provided on the inner side of the connecting bracket 74, a spring 76 fixedly provided on the inner side of the connecting plate 71, and a convex plate 77 fixedly provided on the bottom of the screw block 26.

[0082] Please combine Figure 16 When the screw block 26 drives the moving seat 25 to move to the left side of the delivery point, the convex plate 77 will be in contact with the rotating wheel 73, and the rotating wheel 73 will be pressed downward, and the downward movement of the rotating wheel 73 drives the sliding block 72 to slide downward in the connecting plate 71, and the sliding block 72 drives the detector 75 to move downward through the connecting bracket 74, so that the bottom end of the detector 75 is inserted into the flotation wastewater to detect the PH value of the flotation wastewater.

[0083] Further, when the screw block 26 drives the moving seat 25 to move to the right, the convex plate 77 is out of contact with the rotating wheel 73, and the spring 76 makes the sliding block 72 slide upward in the connecting plate 71, and the sliding block 72 drives the detector 75 to move upward through the connecting bracket 74, so that the position of the detector 75 is reset.

[0084] The top of the oxidation reaction tank 1 is provided with a sealing plate 8, the top of the sealing plate 8 is provided with two storage boxes 9, the inner wall of the oxidation reaction tank 1 is fixedly provided with two mounting frames 10, the inner side of the two mounting frames 10 is provided with an ultraviolet lamp 11, the bottom of the oxidation reaction tank 1 is communicated with a drain pipe 12, the left side of the oxidation reaction tank 1 is fixedly provided with a protection frame 13, and the bottom of the oxidation reaction tank 1 is fixedly provided with a plurality of supporting legs 14.

[0085] Preferably, the two storage boxes 9 are respectively used for storing ferrous sulfate and hydrogen peroxide.

[0086] In this embodiment, when ferrous sulfate and hydrogen peroxide are added, and the rotating rod 41 and the mixing frame 42 are used to mix them with the flotation wastewater, the rotating rod 41 rotates the driven gear 62 through the driving gear disc 61, and the driven gear 62 drives the air extraction rod 65 and the piston 66 to move up and down through the cam 63 and the connecting rod 64, so as to extract the toxic and harmful gas in the oxidation reaction tank 1, and when the screw block 26 moves to the left delivery point, the convex plate 77 will be in contact with the rotating wheel 73, and the rotating wheel 73 will press the sliding block 72, the connecting bracket 74 and the detector 75 downward, so that the bottom end of the detector 75 is inserted into the flotation wastewater to detect the PH value of the flotation wastewater.

[0087] The fourth embodiment:

[0088] Referring to Figure 17 A lithium mica flotation process comprising the steps of:

[0089] Step S1, preparing amide oxime collector compound:

[0090] The aldoxime, water and catalyst were introduced into a Teflon-capped sealed tube under a nitrogen atmosphere, the reaction mixture was stirred at 100 degrees Celsius for three hours, and the reaction process was monitored by periodically collecting samples;

[0091] Dissolved in dichloromethane and analyzed by GC, the solvent was concentrated under reduced pressure, and the crude reaction mixture was purified by column chromatography on silica gel using methanol or dichloromethane as eluent to obtain the product;

[0092] Step S2, preparing mixed flotation agent:

[0093] 30-60% amide oxime collector compound, 15-35% cationic collector, 1-3% pH adjuster, 1-10% antioxidant, and 10-50% solvent;

[0094] Preferably, the cationic collector includes one or more of dodecylamine, tetradecylamine, hexadecylamine, coconut amine, and dodecyltrimethylammonium chloride;

[0095] The pH adjuster includes one or more of sulfuric acid, sodium carbonate, sodium hydroxide, and triethanolamine;

[0096] The antioxidant includes one or more of hydroquinone, tert-butyl hydroquinone, glycerol, surfactants, and fatty acids;

[0097] The solvent includes water or alcohol;

[0098] Step S3, flotation:

[0099] The concentrate after magnetic separation was poured into a flotation tank, the pH of the slurry was adjusted by acid and alkali, the mixed flotation agent was slowly added, after stirring for 10 min, the rougher was started, and the rougher concentrate and rougher tailings were obtained, the rougher tailings were added with flotation agent for scavenging, and the scavenging middlings and scavenging tailings were obtained, the scavenging middlings were returned to the rougher for re-flotation;

[0100] The flotation agent was added again to the rougher concentrate obtained by roughing and the scavenging middlings, and the first cleaning was carried out, and the first cleaning middlings and the first cleaning concentrate were obtained, the first cleaning middlings were returned to the rougher, the first cleaning concentrate was subjected to the second cleaning, and after stirring after adding the flotation agent, the concentrate participated in the next flotation, and the middlings were returned to the previous flotation operation, and the lithium mica concentrate was obtained;

[0101] Step S4, wastewater treatment:

[0102] The PH value of the pretreated flotation wastewater is adjusted to 2.5-3.5, ferrous sulfate is added as a catalyst, and stirring is carried out for fifteen minutes, then hydrogen peroxide is gradually added to the oxidation reaction tank 1 through the spray head 27 in a multi-point progressive manner, the spraying mode adopts the combination of internal spraying and swinging spraying, after the reaction is completed, neutralization and precipitation treatment is carried out, free heavy metals are deeply removed, and organic matter is deeply degraded and treated.

[0103] In this embodiment, compared with the current hot lithium mica collector - benzyl hydroxamic acid, the molecular structure of amide oxime makes it have stronger selective adsorption capacity to specific active sites on the surface of lithium mica, it can more accurately react with metal ions on the surface of lithium mica to form stable chemical bonds or complexes, thereby more effectively separating lithium mica from other gangue minerals in the flotation process and improving the grade of lithium mica concentrate.

[0104] Please refer to Figures 1 to 17 The working principle of the lithium mica flotation wastewater treatment device provided by the application is as follows:

[0105] Step S1, the PH value of the pretreated flotation wastewater is adjusted to 2.5-3.5, then ferrous sulfate is added as a catalyst, the transmission belt 52 is removed, the driving motor 43 is started, the driving motor 43 rotates to drive the mixing frame 42 to rotate through the rotating rod 41, and the ferrous sulfate and the flotation wastewater are stirred and mixed, and the stirring time is fifteen minutes;

[0106] Step S2, after the stirring time reaches, the transmission belt 52 is reinstalled, the driving motor 43 is started, and the driving motor 43 rotates to drive the two belt pulleys 51 to rotate through the rotating rod 41 under the action of the transmission belt 52, the top belt pulley 51 rotates to drive the bidirectional threaded rod 23 to rotate, and the bidirectional threaded rod 23 rotates to drive the screw block 26 and the moving seat 25 to move back and forth left and right, so as to adjust the working position of the outlet pipe 22 and the spray head 27;

[0107] Step S3, when the moving seat 25 moves to the right, the gear 32 will be in contact with the first tooth plate 36, the gear 32 drives the outlet pipe 22 and the spray head 27 to rotate clockwise through the key rod sleeve 31 under the action of the first tooth plate 36, so as to adjust the spraying angle of the spray head 27, increase the contact area of hydrogen peroxide and the flotation wastewater, and rotate the spray head 27 to the left, when the moving seat 25 continuously moves to the right, the limit sleeve rod 34 is in contact with the right limit support 33, the limit sleeve rod 34 drives the key rod sleeve 31 to slide forward in the inner side of the moving seat 25 under the action of the limit support 33, the key rod sleeve 31 moves, thereby driving the gear 32 to move forward, and after moving, the hydrogen peroxide is sprayed and added from the right side of the spraying point once;

[0108] Step S4, when the mobile seat 25 moves to the right to the right side of the delivery point, and moves to the left, the gear 32 will be in contact with the second gear plate 35 in the moving process, under the action of the second gear plate 35, the gear plate 32 drives the outlet pipe 22 and the nozzle 27 to rotate counterclockwise through the key rod sleeve 31, so as to swing the spraying of hydrogen peroxide, and rotate the nozzle 27 to the right, when the mobile seat 25 continues to move to the left, the limiting sleeve rod 34 is in contact with the left limiting support 33, under the action of the limiting support 33, the limiting sleeve rod 34 drives the key rod sleeve 31 and the gear 32 to move backward, so as to reset the position of the gear 32, when the mobile seat 25 moves to the left side of the delivery point, the hydrogen peroxide is sprayed to the right through the nozzle 27;

[0109] Step S5, when the rotating rod 41 rotates, the driving gear plate 61 is rotated, the driving gear plate 61 drives the driven gear 62 to rotate, the driven gear 62 drives the cam 63 to rotate, the cam 63 drives the air extraction rod 65 to move up and down through the connecting rod 64, the air extraction rod 65 in turn drives the piston 66 to move up and down in the air extraction pipe 67, and the toxic and harmful gas in the oxidation reaction tank 1 is extracted;

[0110] Step S6, when the screw block 26 drives the mobile seat 25 to move to the left side of the delivery point, the convex plate 77 is moved to the left, when the convex plate 77 is in contact with the rotating wheel 73, the rotating wheel 73 is pressed downward, the rotating wheel 73 drives the sliding block 72 to slide downward in the inner side of the connecting plate 71, the sliding block 72 drives the detector 75 to move downward through the connecting support 74, so that the bottom end of the detector 75 is inserted into the floatation wastewater, and the PH value of the floatation wastewater is detected.

[0111] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application, any equivalent structural transformation made under the concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A lithium mica flotation process, characterized by, Comprising the following steps: Step S1, preparing amide oxime collector compound: The aldoxime, water and catalyst are introduced into a Teflon-sealed tube under a nitrogen atmosphere, the reaction mixture is stirred at 100 degrees Celsius for three hours, and the reaction process is monitored by periodically collecting samples; Dissolved in dichloromethane and analyzed by GC, the solvent is concentrated under reduced pressure, and the crude reaction mixture is purified by column chromatography on silica gel using methanol or dichloromethane as eluent to obtain the product; Step S2, preparing mixed flotation agent: 30-60% amide oxime collector compound, 15-35% cationic collector, 1-3% pH adjuster, 1-10% antioxidant, and 10-50% solvent; Step S3, flotation: The concentrate after magnetic separation is poured into a flotation tank, the pH of the slurry is adjusted by acid and alkali, the mixed flotation agent is slowly added, after stirring for 10 min, the rougher is started, and the rougher concentrate and rougher tailings are obtained, the rougher tailings are added to the flotation agent for scavenging, and the scavenging middlings and scavenging tailings are obtained, the scavenging middlings are returned to the rougher for re-flotation; The rougher concentrate obtained by roughing and the scavenging middlings are added with flotation agent again for the first cleaning, and the first cleaning middlings and the first cleaning concentrate are obtained, the first cleaning middlings are returned to the rougher, the first cleaning concentrate is subjected to the second cleaning, and after stirring with the addition of the flotation agent, the concentrate participates in the next flotation, and the middlings are returned to the previous flotation operation to obtain the lepidolite concentrate; Step S4, wastewater treatment: The pH value of the pretreated flotation wastewater is adjusted to 2.5-3.5, ferrous sulfate is added as a catalyst, and stirring is carried out for fifteen minutes, then hydrogen peroxide is gradually added to the oxidation reaction tank through multiple nozzles, the addition mode is a combination of internal spraying and oscillating spraying, after the reaction is completed, neutralization and precipitation treatment are carried out, free heavy metals are deeply removed, and organic matter is deeply degraded and treated.

2. The lithium mica flotation process according to claim 1, characterized in that, The lepidolite flotation process uses the following lepidolite flotation wastewater treatment device, which comprises an oxidation reaction tank, a multi-point adding mechanism and an oscillating mechanism; The multi-point adding mechanism comprises a mounting plate, a liquid outlet pipe and a bidirectional threaded screw rod, the two sides of the mounting plate are fixedly connected with the inner wall of the oxidation reaction tank, the top of the mounting plate is fixedly provided with a sliding rail, the surface of the sliding rail is slidably connected with a moving seat, and the front end of the liquid outlet pipe is rotatably connected with the moving seat; The oscillating mechanism comprises a key rod sleeve, a gear and two limiting supports, the surface of the key rod sleeve is rotatably connected with the inner side of the moving seat, the key rod sleeve is connected with the front end of the liquid outlet pipe through a key groove, the surface of the key rod sleeve is connected with a limiting sleeve rod, the front surface of the key rod sleeve is fixedly connected with the back surface of the gear, and the top of the mounting plate is sequentially and fixedly provided with a second toothed plate and a first toothed plate from front to back.

3. The lithium mica flotation process according to claim 2, characterized in that, The two ends of the bidirectional threaded screw rod are rotatably connected with the inner side of the oxidation reaction tank, the surface of the bidirectional threaded screw rod is threadedly connected with a screw block, the top of the screw block is fixedly connected with the bottom of the moving seat, and the surface of the liquid outlet pipe is communicated with a plurality of nozzles.

4. The lithium mica flotation process according to claim 2, characterized in that, The surfaces of the two limiting supports are provided with guide grooves, which are used in cooperation with the limiting sleeve rods to adjust the positions of the limiting sleeve rods in the moving seats, and the front and back positions of the key rod sleeve and the gear are adjusted by adjusting the positions of the limiting sleeve rods in the moving seats.

5. The lithium mica flotation process according to claim 2, characterized in that, The inner wall of the oxidation reaction tank is transversely connected with a mixing mechanism, which comprises a rotating rod connected to the inner wall of the oxidation reaction tank, and a plurality of mixing frames are fixed on the surface of the rotating rod.

6. The lithium mica flotation process according to claim 5, characterized in that, The left end of the rotating rod is fixed with a transmission mechanism, which comprises two belt pulleys fixed on the left end of the rotating rod and the bidirectional threaded rod, and a transmission belt is sleeved on the surfaces of the two belt pulleys.

7. The lithium mica flotation process according to claim 5, characterized in that, The left end of the rotating rod is fixed with a negative pressure suction mechanism, which comprises a driving gear fixed on the left end of the rotating rod, a driven gear rotatably connected to the left side of the oxidation reaction tank through a rotating shaft, the driving gear is engaged with the driven gear, the left side of the driven gear is fixed with a cam, the surface of the cam is rotatably connected with a connecting rod, the top of the connecting rod is rotatably connected with a suction rod, the top end of the suction rod is fixed with a piston, the left side of the oxidation reaction tank is fixed with a suction pipe, and the surface of the piston is slidably connected with the inside of the suction pipe.

8. The lithium mica flotation process according to claim 3, characterized in that, The bottom of the mounting plate is fixed with a detection mechanism, which comprises a connecting plate fixed on the bottom of the mounting plate, a sliding block slidably connected to the inside of the connecting plate, a rotating wheel rotatably connected to the back of the sliding block, a connecting bracket fixed on the front of the sliding block, a detector arranged in the inside of the connecting bracket, a spring fixed in the inside of the connecting plate, and a convex plate fixed on the bottom of the screw block.

9. The lithium mica flotation process according to claim 2, characterized in that, The top of the oxidation reaction tank is provided with a sealing plate, the top of the sealing plate is provided with two storage boxes, the inner wall of the oxidation reaction tank is fixed with two mounting frames, the inside of the two mounting frames is provided with ultraviolet lamps, the bottom of the oxidation reaction tank is communicated with a drain pipe, the left side of the oxidation reaction tank is fixed with a protection frame, and the bottom of the oxidation reaction tank is fixed with a plurality of supporting legs.

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