Mining flotation equipment and flotation process thereof

Abstract

The invention discloses mining flotation equipment and a flotation process thereof, and relates to the technical field of flotation equipment, the mining flotation equipment comprises a tank body, and a first annular plate and a second annular plate are arranged in the tank body; the flotation tank is fixed to the first annular plate, and the scavenging tank is fixed to the second annular plate; and the scraping plate assembly abuts against the top of the flotation tank and the top of the scavenging tank, and the scraping plate assembly is used for scraping foam on the top of the flotation tank and the top of the scavenging tank. Through work of the communication assembly, ore pulp can enter the scavenging tank after being subjected to flotation in the flotation tank, flotation is conducted through large bubbles, the flotation effect and flotation efficiency are guaranteed, scavenging is conducted through small bubbles, the mineral content in tailings is reduced, and then the flotation effect is improved; the staying time of ore pulp in the flotation tank and the scavenging tank can be controlled, so that the situation that the ore content in tailings is too high due to the too high flow speed of the ore pulp is avoided.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of flotation equipment, in particular to a mine flotation equipment and a flotation process thereof. BACKGROUND

[0002] Flotation refers to a process of selecting mineral particles by using the physical and chemical property differences of the surfaces of the minerals, and is the most widely used mineral separation method. At present, flotation equipment is mainly divided into impeller type and air charging type. The air charging type refers to the process of introducing gas into a flotation column to generate bubbles to achieve flotation. However, the flotation column has the following disadvantages: The flotation column is generally high. If the bubble generation position is at the middle position of the flotation column, the large particles in the ore pulp will quickly settle to the bottom of the flotation column. Therefore, the mineral content in the tailings after flotation is high, which leads to poor flotation effect. If the bubble generation position is at the bottom of the flotation column, the bubbles will fuse during the rising process, which leads to the gradual increase of the diameter of the bubbles during the rising process. Therefore, the small mineral particles have a small contact time with the large bubbles, which also leads to poor flotation effect. In addition, regardless of the type of flotation equipment, the ore pulp needs to be concentrated after flotation. Therefore, the ore dressing time is also long. SUMMARY

[0003] The present application aims to provide a mine flotation equipment and a flotation process thereof to solve the technical problems in the prior art.

[0004] In one aspect, the present application provides a mine flotation equipment, comprising: a tank body, wherein a first annular plate and a second annular plate are arranged in the tank body; a flotation tank and a scavenging tank, wherein the flotation tank is fixed with the first annular plate, and the scavenging tank is fixed with the second annular plate; a scraper assembly, wherein the scraper assembly is in contact with the top of the flotation tank and the scavenging tank, and the scraper assembly is used to scrape the foam on the top of the flotation tank and the scavenging tank; a vacuum filtration assembly, wherein the vacuum filtration assembly is arranged between the tank body and the flotation tank; a first bubble generation assembly and a second bubble generation assembly, wherein the first bubble generation assembly is arranged in the flotation tank, and the second bubble generation assembly is arranged in the second annular plate; a gas supply assembly, wherein the output end of the gas supply assembly is in communication with the first bubble generation assembly and the second bubble generation assembly, and the gas supply assembly is also used to extract the gas below the vacuum filtration assembly; a communication assembly, wherein the communication assembly is in communication with the flotation tank and the scavenging tank.

[0005] Preferably, the vacuum filtration assembly comprises: Two support plates, one of which is fixed to the inner wall of the tank body, and the other is fixed to the outer wall of the flotation tank; Two rubber rings, each of which is fixed above the two support plates; A connecting plate is placed on the two rubber rings, two lifting rings are fixed above the connecting plate, and a plurality of mounting holes are opened at the top of the connecting plate, and a filter cloth is fixed in each mounting hole.

[0006] Preferably, the bottom of the tank body is fixed with a conical base, the side wall of the tank body is fixed with a feed pipe which penetrates the inner wall of the flotation tank, the side wall of the tank body is provided with a drain pipe which is between the first annular plate and the connecting plate, a plurality of through holes are opened at the bottom of the flotation tank, and a second flow regulating valve is provided at the bottom of the flotation tank.

[0007] Preferably, the air supply assembly comprises: A second pump box is fixed with the conical base, and an air pump is arranged in the second pump box; A positive pressure pipe is arranged on the output end of the air pump, and a self-operated pressure regulating valve is arranged at the top end of the positive pressure pipe; A negative pressure pipe is arranged at one end of the input end of the air pump, and the other end of the negative pressure pipe penetrates the inner wall of the tank body and is between the connecting plate and the first annular plate.

[0008] Preferably, the first bubble generating assembly comprises: A plurality of tubular aerators are arranged on the inner wall of the bottom of the flotation tank, and the plurality of tubular aerators are concentrically arranged; A first air supply pipe is in communication with the plurality of tubular aerators, and the first air supply pipe is in communication with the self-operated pressure regulating valve.

[0009] Preferably, the second bubble generating assembly comprises: A communication seat is fixed to the inner wall of the bottom of the flotation tank, a first fixing hole is opened at the top of the communication seat, a plurality of second fixing holes are opened on the side wall of the communication seat, and a microporous ceramic plate is fixed in each of the first fixing hole and the plurality of second fixing holes; A second air supply pipe is in communication with the communication seat, and the second air supply pipe is in communication with the positive pressure pipe.

[0010] Preferably, the scraper assembly comprises: A rotating shaft is rotatably arranged on the inner wall of the bottom of the flotation tank, and the rotating shaft penetrates the outer wall of the bottom of the flotation tank; Two scrapers are respectively fixed at both ends of the rotating shaft, one of which abuts against the top of the flotation tank, and the other abuts against the top of the flotation tank. two pulleys, one of which is fixedly sleeved on the rotating shaft, and the other is rotatably arranged at the bottom of the flotation tank; a transmission belt, which is sleeved on the two pulleys; a fixing frame, which is fixed at the bottom of the flotation tank; a motor, which is fixed with the fixing frame, and the output shaft of the motor is fixed with the pulley away from the rotating shaft.

[0011] Preferably, the communication assembly comprises: a first flow regulating valve, which is arranged through the sidewall of the flotation tank; a connecting pipe, one end of which is communicated with the first flow regulating valve, and the other end of which is arranged through the inner wall of the flotation tank; a first pump box, which is fixed on the conical base, and a slurry pump is arranged in the first pump box; a slurry pipe, which is arranged on the input end of the slurry pump, and the slurry pipe is arranged through the top of the second annular plate; a backflow pipe, which is arranged on the output end of the slurry pump, and the backflow pipe is arranged through the inner wall of the flotation tank.

[0012] Preferably, the application further comprises: a third pump box, which is fixed on the conical base, and a liquid pump is arranged in the third pump box; an annular seat, which is arranged on the input end of the liquid pump; a water supply pipe, which is arranged on the output end of the liquid pump; an annular seat, which is arranged at the bottom of the flotation tank, and the annular seat is communicated with the water supply pipe, and a plurality of nozzles are arranged through the bottom of the annular seat, and the plurality of nozzles are arranged between the flotation tank and the tank body.

[0013] In another aspect, the application provides a flotation process of a mining flotation device, which comprises the following steps: Step one: After the mixture of the slurry and the reagent is injected into the flotation tank, the switches of the air pump and the motor are turned on, when the air pump works, the gas in the space surrounded by the tank body, the first annular plate and the connecting plate is pumped out through the negative pressure pipe and then pumped into the positive pressure pipe, when the motor works, the rotating shaft is driven to rotate through the transmission belt and the two pulleys, and then the two scrapers are driven to rotate; Step two: The gas in the positive pressure pipe enters the first gas supply pipe through the self-powered pressure regulating valve, then enters each tubular aerator, and finally is output through the tubular aerator, so that large-diameter bubbles are generated at the bottom of the flotation tank to float the slurry, and in this process, the minerals in the flotation tank are attached to the surface of the bubbles under the action of the reagent and float to the top of the flotation tank. Step three: After the ore pulp in the flotation tank is floated for a period of time, the switch of the first flow regulating valve is connected, the floated middlings in the flotation tank pass through the first flow regulating valve and the connecting pipe into the scavenging tank, the gas in the positive pressure pipe passes through the second gas supply pipe into the connecting seat, small-diameter bubbles are generated through the microporous ceramic plate on the top and side wall of the connecting seat, the middlings in the scavenging tank are scavenged to further float the mineral particles in the middlings to the top of the scavenging tank, and the tailings after scavenging pass through the second flow regulating valve into the conical base and are finally discharged through the conical base; Step four: After the tailings are discharged at the bottom of the conical base, the middlings output by the connecting pipe and the tailings discharged at the bottom of the conical base are sampled and mineral content detection is performed, if the mineral content of the tailings at the bottom of the conical base is high, the opening degree of the conical base can be adjusted to reduce the output speed of the middlings in the scavenging tank to increase the contact time of the mineral particles and the bubbles in the scavenging tank, the flow of the middlings into the scavenging tank is controlled through the control of the first flow regulating valve to ensure the flotation time in the flotation tank, the mineral content in the tailings is reduced by reducing the mineral content in the middlings and increasing the scavenging time to ensure the overall flotation effect; Step five: During the rotation of the two scrapers, the foam layer at the top of the flotation tank and the scavenging tank is pushed to the edge of the flotation tank and the scavenging tank to assist the overflow of the foam on the flotation tank to the connecting plate and the overflow of the foam on the scavenging tank to the second annular plate; Step six: The foam above the filter cloth is vacuum filtered through the filtration of the filter cloth and the pressure difference on both sides of the filter cloth, so that the concentrate after flotation is concentrated and dewatered, and after the flotation is completed, the connecting plate is lifted through the cooperation of the equipment and the lifting ring, so that the concentrate after dewatering above the filter cloth can be taken out; Step seven: The foam after scavenging in the scavenging tank overflows onto the second annular plate, the annular seat and the water supply pipeline are connected, the switch of the liquid pump is connected, the liquid pump pumps water into the water supply pipe through the annular seat when working, and the water is sprayed and output through the nozzles on the annular seat, the bubbles on the second annular plate are defoamed, and diluted ore pulp is formed, and then the diluted ore pulp is transported to the flotation tank through the work of the slurry pump and the cooperation of the ore pulp pipe and the return pipe for further flotation treatment.

[0014] Compared with the prior art, the beneficial effects of the present application are: (1) The tank body, the floating tank and the scavenging tank are arranged, so that the ore pulp can enter the scavenging tank after the ore pulp is floated in the floating tank through the working of the connecting assembly, the ore pulp is floated through large bubbles, the floating effect and the floating efficiency are ensured, the ore pulp is scavenged through small bubbles, the mineral content in the tailings is reduced, and the floating effect is improved. In addition, the time of the ore pulp in the floating tank and the scavenging tank can be controlled through the control of the connecting assembly, so that the too high mineral content in the tailings caused by too fast flow rate of the ore pulp is avoided.

[0015] (2) The vacuum filtering assembly, the air supply assembly, the first bubble generating assembly and the second bubble generating assembly are arranged, so that the air pressure on both sides of the vacuum filtering assembly can be changed during the working of the air supply assembly, the concentration and dehydration of the concentrate are realized, and the subsequent sedimentation and concentration process is avoided. In addition, the first bubble generator and the second bubble generator work during the working of the air supply assembly, so that the flotation and the scavenging are realized. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the following specific embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0017] Figure 1 is a schematic view of the three-dimensional structure of the present application; Figure 2 is a schematic view of the structure of the first pump box, the ore pulp pipe and the return pipe of the present application; Figure 3 is a schematic view of the cross-sectional structure of the tank body of the present application; Figure 4 is a schematic view of the structure of the annular seat and the nozzle of the present application; Figure 5 is a schematic view of the Figure 4 is a schematic view of the local enlarged structure at A of the present application; Figure 6 is a schematic view of the structure of the floating tank, the first annular plate, the scavenging tank and the second annular plate of the present application; Figure 7 is a schematic view of the structure of the tubular aerator, the connecting seat and the microporous ceramic plate of the present application; Figure 8 is a schematic view of the structure of the first air supply pipe and the tubular aerator of the present application.

[0018] Reference signs: 101, tank body; 102, through hole; 103, conical base; 104, drain pipe; 201, flotation tank; 202, feed pipe; 203, connecting pipe; 204, first annular plate; 205, first flow regulating valve; 301, rotating shaft; 302, scraper; 303, motor; 304, fixing frame; 305, transmission belt; 306, pulley; 401, return pipe; 402, first pump box; 403, ore pulp pipe; 501, second pump box; 502, negative pressure pipe; 503, positive pressure pipe; 504, self-operated pressure regulating valve; 505, first air supply pipe; 506, second air supply pipe; 507, tubular aerator; 508, communication seat; 509, microporous ceramic plate; 601, third pump box; 602, water supply pipe; 603, annular seat; 604, spray head; 701, scavenging tank; 702, second annular plate; 703, second flow regulating valve; 801, support plate; 802, rubber ring; 803, connecting plate; 804, filter cloth; 805, lifting ring. DETAILED DESCRIPTION

[0019] The technical solutions of the present application will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application.

[0020] The components of the embodiments of the present application generally described and shown in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0021] All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor fall within the scope of protection of the present application.

[0022] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0023] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0024] In the following description of the present application Figures 1 to 8 The present application provides a mine flotation device, comprising: A tank body 101, the first annular plate 204 and the second annular plate 702 are arranged in the tank body 101; A flotation tank 201 and a scavenging tank 701, the flotation tank 201 is fixed with the first annular plate 204, and the scavenging tank 701 is fixed with the second annular plate 702; A scraper assembly, the scraper assembly is in contact with the top of the flotation tank 201 and the scavenging tank 701, and the scraper assembly is used to scrape the foam on the top of the flotation tank 201 and the scavenging tank 701; A vacuum filtration assembly, the vacuum filtration assembly is arranged between the tank body 101 and the flotation tank 201; A first bubble generating assembly and a second bubble generating assembly, the first bubble generating assembly is arranged in the flotation tank 201, and the second bubble generating assembly is arranged in the second annular plate 702; A gas supply assembly, the output end of the gas supply assembly is in communication with the first bubble generating assembly and the second bubble generating assembly, and the gas supply assembly is also used to extract the gas below the vacuum filtration assembly; A communication assembly, the communication assembly is in communication with the flotation tank 201 and the scavenging tank 701.

[0025] The larger diameter bubbles (about 1-3mm in diameter) generated by the first bubble generating assembly are used for flotation work, and the bubbles of this diameter cooperate with the reagents to adsorb most of the mineral particles in the ore pulp, and make the mineral particles overflow to the vacuum filtration assembly along with the foam, so as to be filtered to obtain concentrated concentrate; The smaller diameter bubbles (about 0.8-2mm in diameter) generated by the second bubble generating assembly are used to collect the residual mineral particles in the ore from the output of the flotation tank 201, and through the action of the communication assembly, the ore pulp output from the scavenging tank 701 reenters the flotation tank 201 to perform flotation work again, thereby ensuring the flotation effect.

[0026] Further, the vacuum filtration assembly comprises: Two support plates 801, one of which is fixed on the inner wall of the tank body 101, and the other is fixed on the outer wall of the flotation tank 201; Two rubber rings 802 are respectively fixed above the two supporting plates 801; A connecting plate 803 is placed on the two rubber rings 802, two lifting rings 805 are fixed above the connecting plate 803, and a plurality of mounting holes are opened at the top of the connecting plate 803, and a filter cloth 804 is fixed in each mounting hole.

[0027] Through the action of the filter cloth 804 and the air pressure difference on both sides of the filter cloth 804, the foam output from the flotation tank 201 can be dehydrated to obtain concentrate, and subsequent concentration and dehydration treatment is not required.

[0028] Further, the conical base 103 is fixed at the bottom of the tank body 101, the feed pipe 202 is fixed on the side wall of the tank body 101, and the feed pipe 202 penetrates the inner wall of the flotation tank 201, the drain pipe 104 is arranged through the side wall of the tank body 101, and the drain pipe 104 is between the first annular plate 204 and the connecting plate 803, a plurality of through holes 102 are opened on the side wall of the tank body 101 below the flotation tank 201, and the second flow regulating valve 703 is arranged through the bottom of the scavenging tank 701.

[0029] After vacuum filtration, the mineral is blocked by the filter cloth 804, and the water enters above the first annular plate 204, a valve is installed at the end of the drain pipe 104, and after the valve is opened, the water above the first annular plate 204 can be discharged; During the scavenging process of the scavenging tank 701, the gas is discharged through the through hole 102 to avoid the increase of the space pressure of the scavenging tank 701 with the increase of the flotation time, thereby ensuring the separation of the bubbles to ensure the scavenging effect.

[0030] Further, the gas supply assembly comprises: The second pump box 501 is fixed with the conical base 103, and the gas pump is arranged in the second pump box 501; The positive pressure pipe 503 is arranged on the output end of the gas pump, and the self-operated pressure regulating valve 504 is arranged at the top end of the positive pressure pipe 503; The negative pressure pipe 502 is arranged at one end of the input end of the gas pump, and the other end of the negative pressure pipe 502 penetrates the inner wall of the tank body 101, and the end of the negative pressure pipe 502 is between the connecting plate 803 and the first annular plate 204.

[0031] Further, the first bubble generating assembly comprises: A plurality of tubular aerators 507 are arranged on the inner wall of the bottom of the flotation tank 201, and the plurality of tubular aerators 507 are concentrically arranged; The first air supply pipe 505 is in communication with the plurality of tubular aerators 507 and the self-operated pressure regulating valve 504.

[0032] Further, the second bubble generating assembly comprises: The communication seat 508 is fixed to the inner wall of the bottom of the scavenging tank 701, the top of the communication seat 508 is provided with a first fixing hole, the sidewall of the communication seat 508 is provided with a plurality of second fixing holes, and a microporous ceramic plate 509 is fixed in each of the first fixing hole and the plurality of second fixing holes; The second air supply pipe 506 is in communication with the communication seat 508 and the positive pressure pipe 503.

[0033] Through the action of the self-operated pressure regulating valve 504, the air pressure in the positive pressure pipe 503 rises to a certain degree, then enters the first air supply pipe 505 through the self-operated pressure regulating valve 504, so that the air pressure in the first air supply pipe 505 is lower than that in the second air supply pipe 506, the gas in the first air supply pipe 505 is outputted through the tubular aerator 507 to form large-diameter bubbles, and the high-pressure gas in the second air supply pipe 506 enters the communication seat 508 and passes through the microporous ceramic plate 509 to form small-diameter bubbles.

[0034] Further, the scraper assembly comprises: The rotating shaft 301 is rotatably arranged on the inner wall of the bottom of the flotation tank 201 and penetrates the outer wall of the bottom of the flotation tank 201; The two scrapers 302 are respectively fixed to the two ends of the rotating shaft 301, one of the two scrapers 302 abuts against the top of the flotation tank 201, and the other scraper 302 abuts against the top of the scavenging tank 701; The two pulleys 306 are arranged, one of the two pulleys 306 is fixedly sleeved on the rotating shaft 301, and the other pulley 306 is rotatably arranged on the bottom of the flotation tank 201; The transmission belt 305 is sleeved on the two pulleys 306; The fixed frame 304 is fixed to the bottom of the flotation tank 201; The motor 303 is fixed to the fixed frame 304, and the output shaft of the motor 303 is fixed to the pulley 306 away from the rotating shaft 301.

[0035] When the motor 303 works, the rotating shaft 301 is driven to rotate through the transmission belt 305 and the two pulleys 306, and then the two scrapers 302 are driven to rotate, and the scrapers 302 in the rotating state can assist the movement of the foam on the flotation tank 201 and the scavenging tank 701.

[0036] Further, the communication assembly comprises: The first flow regulating valve 205 is arranged through the sidewall of the flotation tank 201; The connecting pipe 203 is communicated with the first flow regulating valve 205 at one end, and is arranged through the inner wall of the scavenging tank 701 at the other end; The first pump box 402 is fixed on the conical base 103, and the slurry pump is arranged in the first pump box 402; The slurry pipe 403 is arranged on the input end of the slurry pump, and the slurry pipe 403 is arranged through the top of the second annular plate 702; The return pipe 401 is arranged on the output end of the slurry pump, and the return pipe 401 is arranged through the inner wall of the flotation tank 201.

[0037] Through the control of the first flow regulating valve 205, the speed of the slurry output from the flotation tank 201 can be controlled, and the time of the slurry staying in the flotation tank 201 can be increased. Similarly, the second flow regulating valve 703 can also realize the speed regulation of the tailings output from the scavenging tank 701 and increase the time of the slurry staying in the scavenging tank 701. Through the control of the first flow regulating valve 205 and the second flow regulating valve 703, the continuous output of the tailings in the flotation process can be realized, the continuity of the flotation can be realized, and the flotation efficiency is increased.

[0038] Further, the application further comprises: The third pump box 601 is fixed on the conical base 103, and the liquid pump is arranged in the third pump box 601; The annular seat 603 is arranged on the input end of the liquid pump; The water supply pipe 602 is arranged on the output end of the liquid pump; The annular seat 603 is arranged at the bottom of the flotation tank 201, the annular seat 603 is communicated with the water supply pipe 602, a plurality of spray heads 604 are arranged through the bottom of the annular seat 603, and the plurality of spray heads 604 are arranged between the scavenging tank 701 and the tank body 101.

[0039] When the liquid pump works, water is pumped into the water supply pipe 602 through the annular seat 603, and then is output through the spray heads 604 on the annular seat 603, so as to perform defoaming treatment on the bubbles on the second annular plate 702 and form diluted slurry.

[0040] The application further provides a flotation process of the mining flotation equipment, which comprises the following steps: Step one: After the ore pulp and the reagent are mixed, they are injected into the flotation tank 201, and then the switch of the air pump and the motor 303 is turned on. When the air pump is working, the gas in the space surrounded by the tank body 101, the first annular plate 204 and the connecting plate 803 is pumped out through the negative pressure pipe 502 and then pumped into the positive pressure pipe 503. When the motor 303 is working, the rotation of the rotating shaft 301 is driven by the transmission belt 305 and the two belt pulleys 306, and then the two scrapers 302 are rotated. Step two: The gas in the positive pressure pipe 503 enters the first gas supply pipe 505 through the self-powered pressure regulating valve 504, then enters each tubular aerator 507, and finally is output through the tubular aerator 507, so that large-diameter bubbles are generated at the bottom of the flotation tank 201 to float the ore pulp. During this process, the minerals in the flotation tank 201 adhere to the surface of the bubbles under the action of the reagent and float to the top of the flotation tank 201. Step three: After the ore pulp in the flotation tank 201 is floated for a period of time, the switch of the first flow regulating valve 205 is turned on, the floated middlings in the flotation tank 201 enter the scavenging tank 701 through the first flow regulating valve 205 and the connecting pipe 203, and the gas in the positive pressure pipe 503 enters the communication seat 508 through the second gas supply pipe 506. Small-diameter bubbles are generated through the micro-porous ceramic plate 509 on the top and side wall of the communication seat 508, so as to realize the scavenging of the middlings in the scavenging tank 701, further float the mineral particles in the middlings to the top of the scavenging tank 701, and finally output the tailings through the second flow regulating valve 703 and the conical base 103. Step four: After the tailings are discharged from the bottom of the conical base 103, the middlings output by the connecting pipe 203 and the tailings discharged from the bottom of the conical base 103 are sampled and the mineral content is detected. If the mineral content of the tailings at the bottom of the conical base 103 is high, the opening degree of the conical base 103 can be adjusted to reduce the output speed of the middlings in the scavenging tank 701, so as to increase the contact time of the mineral particles and the bubbles in the scavenging tank 701. By controlling the flow of the middlings entering the scavenging tank 701 through the first flow regulating valve 205, the flotation time in the flotation tank 201 is ensured. By reducing the mineral content in the middlings and increasing the scavenging time, the mineral content in the tailings is reduced to ensure the overall flotation effect. Step five: During the rotation of the two scrapers 302, the foam layer at the top of the flotation tank 201 and the scavenging tank 701 is pushed to the edge of the flotation tank 201 and the scavenging tank 701 to assist the overflow of the foam on the flotation tank 201 to the connecting plate 803 and the overflow of the foam on the scavenging tank 701 to the second annular plate 702. Step six: The foam above the filter cloth 804 is vacuum filtered by filtering of the filter cloth 804 and the air pressure difference on both sides of the filter cloth 804, so that the concentrate after flotation is concentrated and dewatered. After the flotation is completed, the connecting plate 803 is lifted by the equipment in the device through the lifting ring 805, and the concentrate after dewatering above the filter cloth 804 can be taken out; Step seven: The overflow of the froth after sweeping in the sweeping tank 701 is above the second annular plate 702. The annular seat 603 is connected with the water supply pipeline, the switch of the liquid pump is turned on, and the liquid pump pumps water into the water supply pipeline 602 through the annular seat 603 when working. The water is sprayed and output through the spray head 604 on the annular seat 603, the air bubbles on the second annular plate 702 are defoamed, and the diluted ore slurry is formed. The diluted ore slurry is transported to the flotation tank 201 through the work of the slurry pump and the cooperation of the ore slurry pipeline 403 and the backflow pipeline 401, so as to perform flotation treatment again.

[0041] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A mining flotation device, characterized in that, The utility model relates to a kind of floatation tank and cleaning tank, including: Tank body (101), first annular plate (204) and second annular plate (702) are arranged in the tank body (101); Floatation tank (201) and cleaning tank (701), the floatation tank (201) and first annular plate (204) are fixed, the cleaning tank (701) and second annular plate (702) are fixed; Scraper assembly, the scraper assembly is in contact with the top of floatation tank (201) and cleaning tank (701), and the scraper assembly is used to scrape the foam on the top of floatation tank (201) and cleaning tank (701); Vacuum filter assembly, the vacuum filter assembly is arranged between tank body (101) and floatation tank (201); First bubble generating assembly and second bubble generating assembly, the first bubble generating assembly is arranged in floatation tank (201), and the second bubble generating assembly is arranged in second annular plate (702); Air supply assembly, the output of air supply assembly is communicated with first bubble generating assembly and second bubble generating assembly, and air supply assembly is also used to extract gas under vacuum filter assembly; Communication assembly, the communication assembly is communicated with floatation tank (201) and cleaning tank (701).

2. A mining flotation plant according to claim 1, characterized in that, The vacuum filter assembly includes: Two support plates (801), one of the support plates (801) is fixed on the inner wall of tank body (101), and the other support plate (801) is fixed on the outer wall of floatation tank (201); Two rubber rings (802), two rubber rings (802) are fixed above two support plates (801) respectively; Connecting plate (803) is placed on two rubber rings (802), two lifting rings (805) are fixed above connecting plate (803), and a plurality of mounting holes are formed in the top of connecting plate (803), and filter cloth (804) is fixed in each mounting hole.

3. A mining flotation device according to claim 1, characterised in that, The bottom of tank body (101) is fixed with conical base (103), the sidewall of tank body (101) is fixed with feed pipe (202), and feed pipe (202) penetrates the inner wall of floatation tank (201), the sidewall of tank body (101) is provided with drain pipe (104) penetratingly, and drain pipe (104) is between first annular plate (204) and connecting plate (803), a plurality of through holes (102) are formed in the sidewall of tank body (101) below floatation tank (201), and second flow regulating valve (703) is provided penetratingly in the bottom of cleaning tank (701).

4. A mining flotation plant according to claim 3, characterised in that, The air supply assembly includes: Second pump box (501), the second pump box (501) is fixed with conical base (103), and air pump is arranged in the second pump box (501); Positive pressure pipe (503) is arranged on the output end of air pump, and self-operated pressure regulating valve (504) is arranged at the top end of positive pressure pipe (503); Negative pressure pipe (502) is arranged on the input end of air pump at one end, and the other end of negative pressure pipe (502) penetrates the inner wall of tank body (101), and the end of negative pressure pipe (502) is between connecting plate (803) and first annular plate (204).

5. A mining flotation plant according to claim 4, characterised in that, The first bubble generating assembly comprises: A plurality of tubular aerators (507) are arranged on the inner wall of the bottom of the flotation tank (201), and the plurality of tubular aerators (507) are arranged concentrically. A first gas supply pipe (505) is in communication with the plurality of tubular aerators (507), and the first gas supply pipe (505) is in communication with the self-operated pressure regulating valve (504).

6. A mining flotation plant according to claim 4, characterised in that, The second bubble generating assembly comprises: A communication seat (508) is fixed on the inner wall of the bottom of the scavenging tank (701), a first fixing hole is formed in the top of the communication seat (508), a plurality of second fixing holes are formed in the side wall of the communication seat (508), and a microporous ceramic plate (509) is fixed in each of the first fixing hole and the plurality of second fixing holes. A second gas supply pipe (506) is in communication with the communication seat (508), and the second gas supply pipe (506) is in communication with the positive pressure pipe (503).

7. A flotation plant for mining according to any one of claims 1 - 6, characterized in that, The scraper assembly comprises: A rotating shaft (301) is rotatably arranged on the inner wall of the bottom of the flotation tank (201), and the rotating shaft (301) penetrates the outer wall of the bottom of the flotation tank (201). Two scrapers (302) are fixed at the two ends of the rotating shaft (301), one of the two scrapers (302) abuts against the top of the flotation tank (201), and the other of the two scrapers (302) abuts against the top of the scavenging tank (701). Two pulleys (306) are arranged, one of the two pulleys (306) is fixed on the rotating shaft (301), and the other of the two pulleys (306) is rotatably arranged on the bottom of the flotation tank (201). A transmission belt (305) is sleeved on the two pulleys (306). A fixed frame (304) is fixed on the bottom of the flotation tank (201). A motor (303) is fixed on the fixed frame (304), and the output shaft of the motor (303) is fixed to the pulley (306) away from the rotating shaft (301).

8. A mining flotation plant according to claim 7, characterised in that, The communication assembly comprises: A first flow regulating valve (205) is arranged on the side wall of the flotation tank (201). A connecting pipe (203) is in communication with the first flow regulating valve (205) at one end, and the other end of the connecting pipe (203) penetrates the inner wall of the scavenging tank (701). A first pump box (402) is fixed on the conical base (103), and a slurry pump is arranged in the first pump box (402). A slurry pipe (403) is arranged on the input end of the slurry pump, and the slurry pipe (403) penetrates the top of the second annular plate (702). A return pipe (401) is arranged on the output end of the slurry pump, and the return pipe (401) penetrates the inner wall of the flotation tank (201).

9. A mine flotation plant according to claim 8, characterised in that, Further comprising: A third pump box (601) is fixed on the conical base (103), and a liquid pump is arranged in the third pump box (601); A ring-shaped seat (603) is arranged on the input end of the liquid pump; A water supply pipe (602) is arranged on the output end of the liquid pump; A ring-shaped seat (603) is arranged at the bottom of the flotation tank (201), and the ring-shaped seat (603) and the water supply pipe (602) are communicated, and a plurality of spray heads (604) are arranged at the bottom of the ring-shaped seat (603) and penetrate the ring-shaped seat (603), and the plurality of spray heads (604) are arranged between the scavenging tank (701) and the tank body (101).

10. The flotation process of a mining flotation plant according to any one of claims 1 - 9, characterized in that, The method comprises the following steps: Step one: After the ore pulp and the reagent are mixed, they are injected into the flotation tank (201), and then the air supply assembly and the scraper assembly are controlled to work; Step two: When the air supply assembly works, the first bubble generating assembly generates bubbles in the flotation tank (201) to float the ore pulp, and in this process, the minerals in the flotation tank (201) are attached to the surface of the bubbles under the action of the reagent and float to the top of the flotation tank (201); Step three: Through the working of the communication assembly, the middlings in the flotation tank (201) after being floated enter the scavenging tank (701), and through the second bubble generating assembly, the middlings in the scavenging tank (701) are scavenged, and the tailings after scavenging enter the conical base (103) through the second flow regulating valve (703), and finally are discharged through the conical base (103); Step four: After the tailings are discharged at the bottom of the conical base (103), the middlings output by the communication assembly and the tailings discharged at the bottom of the conical base (103) are sampled and the mineral content is detected, and if the mineral content of the tailings at the bottom of the conical base (103) is high, the opening degree of the conical base (103) can be adjusted to increase the contact time of the mineral particles and the bubbles in the scavenging tank (701), and through the control of the communication assembly, the flow of the middlings entering the scavenging tank (701) is controlled to further ensure the scavenging effect; Step five: After a certain time of flotation, the work of the scraper assembly helps the foam at the top of the flotation tank (201) and the scavenging tank (701) to overflow; Step six: In the process of working of the air supply assembly, the external gas passes through the filter cloth (804) and then enters the air supply assembly, so that the foam above the filter cloth (804) is vacuum filtered, that is, the concentrate is concentrated; Step seven: The foam after being scavenged in the scavenging tank (701) overflows to the top of the second ring-shaped plate (702), and then the ore pulp scavenged on the second ring-shaped plate (702) is pumped to the flotation tank (201) again for flotation.

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