CN108636618B - Multi-stage mineral flotation device for test and application method thereof - Google Patents
Multi-stage mineral flotation device for test and application method thereof Download PDFInfo
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- CN108636618B CN108636618B CN201810361984.4A CN201810361984A CN108636618B CN 108636618 B CN108636618 B CN 108636618B CN 201810361984 A CN201810361984 A CN 201810361984A CN 108636618 B CN108636618 B CN 108636618B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/16—Flotation machines with impellers; Subaeration machines
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1406—Flotation machines with special arrangement of a plurality of flotation cells, e.g. positioning a flotation cell inside another
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1475—Flotation tanks having means for discharging the pulp, e.g. as a bleed stream
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Abstract
The invention discloses a multistage mineral flotation device for tests and an application method thereof, wherein the multistage mineral flotation device comprises a plurality of mineral flotation devices which are sequentially connected, each mineral flotation device comprises a base, a flotation motor is arranged in each mineral flotation device, and a rotating shaft of each flotation motor extends out of the table top of each base; the flotation tank is detachably arranged on the base, the bottom of the flotation tank is rotatably provided with the impeller, and a rotating shaft of the flotation motor is detachably connected with a rotating shaft of the impeller; the outer side of the top of the flotation tank is provided with a guide groove in a surrounding way, the guide groove is used for collecting concentrate overflowing from the top of the flotation tank, the bottom of the guide groove is provided with a concentrate discharge port, and the concentrate discharge port of the previous stage of mineral flotation device is communicated with the flotation tank of the next stage of mineral flotation device through a concentrate conveying pipe; and the air pipe extends to the bottom of the flotation tank and is used for introducing air flow into the flotation tank. The multi-stage mineral flotation device for the test has the advantages of simple structure, convenience in use, low cost, high flotation efficiency and good flotation effect.
Description
Technical Field
The invention relates to the technical field of mineral flotation equipment, in particular to a multistage mineral flotation device for a test and an application method thereof.
Background
Mineral separation is the most important link in the production of whole mineral products and is a key department in a mineral enterprise. Generally, large-scale mining enterprises are resource enterprises for comprehensive mining, selecting and smelting. The process of physically or chemically separating useful minerals from unwanted minerals (usually called gangue) or unwanted minerals in a mineral feedstock, or separating a plurality of useful minerals, is called beneficiation.
The flotation method, which is an important beneficiation method, is a method of sorting minerals according to differences in floatability among the minerals depending on differences in physicochemical properties of the surfaces of the mineral particles, and sorting is performed by utilizing differences in wettability (hydrophobicity or hydrophilicity) of the surfaces of various mineral raw material particles to water. Generally referred to as froth flotation. Natural hydrophobic minerals are few, and a collecting agent is usually added into ore pulp to enhance the hydrophobicity of the minerals to be floated; various regulators are added to improve the selectivity; adding foaming agent and aerating to generate bubbles, attaching hydrophobic mineral particles to the bubbles, floating and separating.
The most basic behavior in the flotation process is mineralization of the flotation bubbles, i.e. attachment of minerals, drugs and bubbles. The main function of the flotation machine is to fill or suck air into ore pulp to form a large amount of fine and uniform bubbles, and the flotation process of attaching ore, medicine and bubbles is completed.
The existing flotation device for the test is usually to hang a flotation tank on a flotation machine, a stirring shaft on the flotation machine extends into the flotation tank from the upper part of the flotation tank to stir ore pulp in the flotation tank, the stirring shaft adopts a hollow shaft, air is introduced into the ore pulp from the stirring shaft, and concentrate floated from the upper part of the flotation tank is scraped out through a rotary scraping device, so that the flotation separation of minerals is realized. The flotation device with the structure mainly has the following defects: 1. when the flotation tank is used, the flotation tank needs to be hung on a flotation machine, the stirring shaft extends into the flotation tank from the upper part of the flotation tank, and the two surfaces of the rear part and the upper part of the flotation tank are blocked during flotation, so that the materials in the flotation tank are inconvenient to observe; 2. the stirring shaft extends into the flotation tank from the upper part of the flotation tank to cause larger shielding of an upper opening of the flotation tank, so that charging is inconvenient in the flotation process; 3. when the device is used, flotation tanks matched with the flotation machine and the specification of a stirring shaft of the flotation machine need to be selected, the same flotation machine cannot be hung with flotation tanks of different specifications, and the device is not high in flexibility and inconvenient to use; 4. the existing flotation machine for the test is complex in structure, heavy and high in cost, and a flotation device for the test is required to be simple as much as possible, and the cost cannot be too high; 5. the rotary shaft of the existing flotation device extends into the bottom of the flotation tank from the upper part of the flotation tank, and the length of the stirring shaft is long, so that high-speed stirring cannot be performed (the torque is large, and the shaking is easy to occur), and the flotation effect and the flotation efficiency of the flotation device are influenced; 6. the multi-stage mineral flotation device in laboratory that current laboratory single cell flotation device can't assemble into through many series connections, and the multi-stage mineral flotation device in laboratory that current needs purchase alone, and the fixed unable change of volume of flotation cell, multi-stage equipment can not change with single groove equipment and use, leads to the fund input height, and equipment idle rate is high, crowds to account for limited laboratory space.
Therefore, develop a simple structure, convenient to use, use flexibility good, with low costs, flotation efficiency is high, flotation effect is good's flotation device to adapt to the experimental demand of mineral flotation, have important realistic meaning.
Disclosure of Invention
The invention mainly aims to provide a multistage mineral flotation device for experiments and an application method thereof, and at least solves the problems of complex structure, inconvenience in use, high cost and poor flotation effect of a flotation device in the prior art.
In order to achieve the above object, according to one aspect of the present invention, there is provided a multistage mineral flotation device for testing, including a plurality of mineral flotation devices connected in series, the mineral flotation device including: the flotation device comprises a base, a flotation motor, a floating mechanism and a control system, wherein the base is internally provided with the flotation motor, and a rotating shaft of the flotation motor extends out of the table top of the base; the flotation tank is detachably arranged on the base, an impeller is rotatably arranged at the bottom of the flotation tank, a rotating shaft of a flotation motor is detachably connected with a rotating shaft of the impeller, and the flotation motor is used for driving the impeller to rotate; the outer side of the top of the flotation tank is provided with a guide groove in a surrounding way, the guide groove is used for collecting concentrate overflowing from the top of the flotation tank, the bottom of the guide groove is provided with a concentrate discharge port, and the concentrate discharge port of the previous stage of mineral flotation device is communicated with the bottom of the flotation tank of the next stage of mineral flotation device through a concentrate conveying pipe; and the air pipe extends to the bottom of the flotation tank and is used for introducing air flow into the flotation tank.
Furthermore, both sides of the lower part of the flotation tank are respectively provided with a middling inlet and a tailing outlet, the tailing outlet of the next stage of mineral flotation device is communicated with the middling inlet of the previous stage of mineral flotation device through a tailing conveying pipe, and a peristaltic pump is arranged on the tailing conveying pipe.
Further, the mineral flotation device also comprises: the separation cylinder is arranged at the periphery of the impeller in a surrounding mode, the height of the upper edge of the separation cylinder is lower than that of the upper edge of the flotation tank, a gap for ore pulp to pass through is reserved between the separation cylinder and the inner wall of the flotation tank, and a backflow grid is arranged at the lower portion of the separation cylinder.
Further, the vent pipe extends to the lower part of the impeller.
Furthermore, the guide groove is obliquely arranged, and the height of the guide groove close to the concentrate discharge outlet is lower than that of the rest part of the guide groove.
Further, the vent pipe penetrates through the side wall of the flotation tank and extends out of the flotation tank, and the height of one end, extending out of the flotation tank, of the vent pipe is higher than the upper edge of the flotation tank.
Furthermore, a regulating valve is arranged on the part of the vent pipe higher than the upper edge of the flotation tank.
Furthermore, the mineral flotation device also comprises a heating device and a temperature sensor, and the heating device and the temperature sensor are both arranged in the flotation tank.
According to another aspect of the present invention, there is provided a method of using a multistage mineral flotation apparatus for testing, comprising the steps of:
s1, adding ore pulp into a flotation tank of a front-stage mineral flotation device, starting stirring and introducing airflow, enabling the ore pulp to move upwards under the action of an impeller, enter a gap between a separation barrel and the flotation tank through the upper edge of the separation barrel and flow downwards along the gap, enabling the ore pulp at the lower part of the gap to enter the lower part of the separation barrel through a backflow grid under the action of negative pressure below the impeller to form backflow, enabling the airflow to be broken into a plurality of micro bubbles under the combined action of the impeller and the separation barrel after being introduced from the lower part of the impeller, enabling minerals to float upwards to a foam forming area in the process of continuous backflow, enabling the concentrates to flow into a guide groove through the upper edge of the flotation tank, and conveying the concentrates into a flotation tank of a next-stage mineral flotation device through a concentrate discharge port and a concentrate conveying pipe;
s2, performing backflow flotation in the same way as the previous stage mineral flotation device, and enabling the floated concentrate to flow into the next stage mineral flotation device for flotation, and performing the steps in sequence until the floated concentrate meets the preset requirement, and discharging the concentrate meeting the requirement through a concentrate discharge port of the last stage mineral flotation device;
s3, after the backflow flotation is carried out for a period of time, a peristaltic pump is started to convey the tailings at the bottom of the flotation tank of the next-stage mineral flotation device into the flotation tank of the previous-stage mineral flotation device through a tailing discharge port and a tailing conveying pipe, the tailings of the next stage are conveyed back to the flotation tank of the previous stage in sequence in this way, the tailings are conveyed to the first-stage mineral flotation device to be scavenged, and finally the tailings are discharged through the tailing discharge port of the first-stage mineral flotation device.
When the flotation machine is used, the flotation tank is placed on the base, the rotating shaft of the impeller is connected with the rotating shaft of the flotation motor, the flotation motor is started to stir, and air flow is introduced into ore pulp through the vent pipe, so that flotation operation can be performed. When the mineral flotation device is used, the back surface and the top surface of the flotation tank cannot be shielded, so that the observation of materials in the flotation tank is facilitated, and the charging is facilitated; the same base can be matched with flotation tanks with different specifications, so that the use mode is more flexible; because the impeller is directly arranged at the bottom of the flotation tank, the length of a rotating shaft of the impeller is very short, the impeller is not easy to shake during rotation, and the impeller can be matched with a high-rotation-speed flotation motor, so that the flotation effect and the flotation efficiency are improved; the flotation device adopts a plurality of flotation cells which are connected in sequence, the concentrate discharge port of the previous flotation cell is communicated with the next flotation cell, so that the flotation effect is improved, the flotation cell can be assembled in any flexible multiple stages, and the size of the flotation cell of each stage can be flexibly changed according to the processing requirement; after the multistage equipment is disassembled, each unit can be used as an independent flotation machine. This it is experimental with multistage mineral flotation device has solved the problem that current device structure is complicated, use is inconvenient, equipment cost is high, flotation efficiency is not high, flotation effect is not good.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of the construction of a multi-stage mineral flotation apparatus for testing according to the present invention.
Fig. 2 is a schematic view showing the structure of a single mineral flotation device in the multi-stage mineral flotation device for testing according to the present invention.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Figure 4 is a schematic diagram of the flotation cell and the various components of the flotation cell in the experimental multi-stage mineral flotation unit of the present invention.
Figure 5 is a schematic diagram of the construction of the baffle cylinder and the return grid of the multi-stage mineral flotation device for testing of the present invention.
Figure 6 is a schematic diagram of the base structure of the experimental multi-stage mineral flotation unit of the present invention.
Wherein the figures include the following reference numerals:
10. a base; 11. a flotation motor; 20. a flotation cell; 21. an impeller; 22. a guide groove; 23. a concentrate discharge port; 24. a middling inlet; 25. a tailing discharge port; 26. a peristaltic pump; 27. a foam-forming zone; 28. a reflux stirring zone; 30. a breather pipe; 40. a barrier cylinder; 41. a reflux grille; 50. adjusting a valve; 60. a heating device; 70. a temperature sensor; 80. a concentrate conveying pipe; 90. and (4) a tailing conveying pipe.
Detailed Description
In order to facilitate an understanding of the invention, the invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of the invention is not limited to the specific embodiments below.
Unless otherwise defined, all terms of art used hereinafter have the same meaning as commonly understood by one of ordinary skill in the art. The use of the words "a" or "an" and the like in the description and claims of the present patent application do not denote a limitation of quantity, but rather denote the presence of at least one. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships are changed accordingly.
As shown in fig. 1 to 6, a multistage mineral flotation device for experiments according to an embodiment of the present invention includes a plurality of mineral flotation devices connected in series, and the mineral flotation device includes: a base 10 and a flotation cell 20. Wherein, a flotation motor 11 is arranged in the base 10, and a rotating shaft of the flotation motor 11 extends out of the table-board of the base 10; the flotation tank 20 is detachably mounted on the base 10, an impeller 21 is rotatably mounted at the bottom of the flotation tank 20, a rotating shaft of the flotation motor 11 is detachably connected with a rotating shaft of the impeller 21, and the flotation motor 11 is used for driving the impeller 21 to rotate; the top outer side of the flotation cell 20 is surrounded by a channel 22, the channel 22 is used for collecting the concentrate which overflows from the top of the flotation cell 20, the bottom of the channel 22 is provided with a concentrate discharge outlet 23, and the concentrate discharge outlet 23 of the previous stage mineral flotation device is communicated with the flotation cell 20 of the next stage mineral flotation device through a concentrate conveying pipe 80. The flotation tank 20 is further provided with a vent pipe 30, and the vent pipe 30 extends to the bottom of the flotation tank 20 and is used for introducing airflow into the flotation tank 20.
Use above-mentioned technical scheme's multistage mineral flotation device for experiment, with flotation cell 20 demountable installation on base 10, install flotation motor 11 in base 10, rotate installation impeller 21 in the bottom of flotation cell 20, and can dismantle the pivot of impeller 21 and the pivot of flotation motor 11 and be connected, drive impeller 21 through flotation motor 11 and rotate, during the use, place flotation cell 20 on base 10, make the pivot of impeller 21 be connected with the pivot of flotation motor 11, open flotation motor 11 and stir, and utilize breather pipe 30 to let in the air current to the ore pulp, can carry out the flotation operation. When the mineral flotation device is used, the back surface and the top surface of the flotation tank 20 are not shielded, so that the observation of materials in the flotation tank 20 is facilitated, and the charging is facilitated; moreover, the same base 10 can be matched with flotation tanks 20 with different specifications, so that the use mode is more flexible; because the impeller 21 is directly arranged at the bottom of the flotation tank 20, the rotating shaft of the impeller 21 is short in length, so that the impeller is not easy to shake during rotation, and can be matched with the high-rotation-speed flotation motor 11, thereby improving the flotation effect and the flotation efficiency; the flotation method comprises the following steps that a plurality of flotation cells 20 are adopted, wherein the flotation cell 20 is connected in sequence, a concentrate discharge port 23 of the previous flotation cell 20 is communicated with the next flotation cell 20, during flotation, minerals obtained through flotation float on the upper layer of ore pulp and gradually overflow from the top of the flotation cell 20 to fall into a guide groove 22, the minerals flow into the next flotation cell 20 through the concentrate discharge port 23 for flotation again, and concentrates are subjected to multi-stage flotation, so that the flotation effect is improved, the flotation cell can be assembled in any flexible multi-stage mode, and the size of the flotation cell 20 of each stage can be flexibly changed according to processing requirements (for example, the first flotation cell 20 is set as a scavenging cell, the second flotation cell 20 is set as a roughing cell, and the third flotation cell 20; after the multistage equipment is disassembled, each unit can be used as an independent flotation machine.
Specifically, in a single mineral flotation device, the existing detachable connection mode can be adopted between the rotating shaft of the impeller 21 and the rotating shaft of the flotation motor 11, for example, a regular polygonal connecting part can be arranged at the upper end of the rotating shaft of the flotation motor 11, a socket joint with an inner wall being a regular polygon is arranged at the lower end of the rotating shaft of the impeller 21, and detachable connection of the two rotating shafts is realized through matching between the connecting part and the socket joint.
Furthermore, both sides of the lower part of the flotation cell 20 are respectively provided with a middling inlet 24 and a tailing outlet 25, the tailing outlet 25 of the next stage mineral flotation device is communicated with the middling inlet 24 of the previous stage mineral flotation device through a tailing conveying pipe 90, and a peristaltic pump 26 is arranged on the tailing conveying pipe 90. So set up, through carrying out the scavenging with the tailings flowback, improved the rate of recovery of valuable mineral greatly.
When concrete application, can add at first order mineral flotation device's front end and establish a agitator feeder, conveniently add ore deposit, add the medicine to this multistage mineral flotation device, guarantee that this multistage mineral flotation device can long-time steady operation. This agitator feeder also can replace with the mineral flotation device of this embodiment, only needs to connect a mineral flotation device with first order mineral flotation device again, and this mineral flotation device only opens the stirring, does not open the ventilation can.
In order to make the slurry in the flotation tank 20 form a backflow to further improve the flotation effect and the flotation efficiency, in the embodiment, the mineral flotation device further comprises a blocking cylinder 40, the blocking cylinder 40 is arranged around the periphery of the impeller 21, the lower end of the blocking cylinder 40 is connected with the inner side of the bottom of the flotation tank 20, the height of the upper edge of the blocking cylinder 40 is lower than that of the upper edge of the flotation tank 20, a gap for the slurry to pass through is reserved between the blocking cylinder 40 and the inner wall of the flotation tank 20, and a backflow grid 41 is arranged at the lower part of the blocking cylinder 40. According to the arrangement, a foam forming area 27 is formed between the upper edge of the separation cylinder 40 and the upper edge of the flotation tank 20, a backflow stirring area 28 is arranged below the upper edge of the separation cylinder 40, when the device is used, the flotation motor 11 drives the impeller 21 to rotate, so that ore pulp in the separation cylinder 40 is pushed to move upwards, negative pressure is generated below the impeller 21, the rising ore pulp flows downwards through a gap between the separation cylinder 40 and the inner wall of the flotation tank 20 after flowing over the upper edge of the separation cylinder 40, the ore pulp at the lower part of the gap is sucked into the separation cylinder 40 through the backflow grating 41 under the action of the negative pressure to form backflow, the device continuously operates in such a way, the floated minerals continuously enter the foam forming area and float above the flotation tank 20, backflow of the ore pulp is formed through the structures of the separation cylinder 40 and the backflow grating 41, and the flotation effect and the flotation efficiency are greatly improved.
To further enhance the flotation effect, in this embodiment the aeration pipe 30 extends below the impeller 21, see fig. 2, 3 and 4. The mineral flotation process mainly includes dispersing minerals to be floated in water, adding a collecting agent to enhance the hydrophobicity of the minerals, and then introducing airflow to generate bubbles to attach hydrophobic mineral particles to the bubbles for floating separation, so that the diameter of the bubbles is reduced, the specific surface area of the bubbles is increased, and the flotation effect and the flotation efficiency are improved. The vent pipe 30 extends to the lower part of the impeller 21, the air bubbles are broken into a large number of micro air bubbles under the combined action of the impeller 21 and the blocking cylinder 40, and the hydrophobic minerals are attached to the micro air bubbles and rise to the foam forming area 27 along with the micro air bubbles. The air bubbles are broken into a plurality of micro air bubbles, so that the flotation effect and the flotation efficiency of the flotation device are effectively improved.
In order to facilitate the collection of the floated concentrate, the channel 22 is in this embodiment inclined, the height of the channel 22 near the concentrate discharge opening 23 being lower than the height of the rest of the channel 22. In this way, concentrate that overflows from the top of the flotation cell 20 in all directions is collected centrally at the concentrate discharge outlet 23 for more convenient collection.
Referring to fig. 2 and 4, in the present embodiment, the vent pipe 30 protrudes outside the flotation tank 20 through the side wall of the flotation tank 20, and the height of the end of the vent pipe 30 protruding outside the flotation tank 20 is higher than the upper edge of the flotation tank 20. Because ore pulp is required to be filled in the ore floatation device firstly when the ore floatation device is used, and then airflow is introduced, by adopting the arrangement, more ore pulp is contained in the floatation tank 20, and the vent pipe 30 is not blocked.
Further, a regulating valve 50 is installed at a portion of the vent pipe 30 higher than the upper edge of the flotation tank 20, for opening and closing the vent pipe, or regulating the flow rate of the vent pipe. The regulating valve 50 is arranged at the part of the vent pipe 30 higher than the upper edge of the flotation tank 20, so that the pulp can be prevented from contacting with the regulating valve 50 to cause corrosion or blockage of the regulating valve 50.
In order to facilitate regulation and control of the temperature of the slurry during the flotation process, the mineral flotation apparatus in this embodiment further comprises a heating device 60 and a temperature sensor 70, both the heating device 60 and the temperature sensor 70 being mounted in the flotation cell 20. The temperature sensor 70 can conveniently detect the temperature of the ore pulp, and the heating device 60 can conveniently adjust the temperature of the ore pulp.
In a specific application, the mineral flotation device further comprises a controller (not shown in the figure), the controller is installed on the base 10, the flotation motor 11, the heating device 60, the temperature sensor 70 and the peristaltic pump 26 are all connected with the controller, the start-stop and rotating speed of the flotation motor 11 are adjusted through the controller, the start-stop and heating power of the heating device 60 are controlled, and the start-stop of the peristaltic pump 26 is controlled. A plurality of mineral flotation devices can be placed on a stepped table top, and are sequentially placed on different steps of the stepped table top according to the number of steps, and concentrate floated at the previous stage automatically flows into the flotation tank 20 at the next stage.
The working principle and the application method of the multistage mineral flotation device for the test are as follows:
adding ore pulp into the flotation tank 20 of the front-stage mineral flotation device, starting stirring and introducing airflow, wherein the ore pulp moves upwards under the action of the impeller 21, enters a gap between the separation cylinder 40 and the flotation tank 20 through the upper edge of the separation cylinder 40 and flows downwards along the gap, the ore pulp at the lower part of the gap enters the lower part of the separation cylinder 40 through the backflow grating 41 under the action of negative pressure below the impeller 21 to form backflow, the airflow is introduced from the lower part of the impeller 21 and then is broken into a plurality of micro bubbles under the combined action of the impeller 21 and the separation cylinder 40, during the continuous backflow process, minerals adhere to the micro bubbles and float upwards to the foam forming area 27, then the concentrates flow upwards through the flotation tank 20 and enter the guide groove 22, and are conveyed into the concentrate flotation tank 20 of the next-stage mineral flotation device through the concentrate discharge port 23 and the conveying pipe 80; carrying out multiple fine separation in the same way as the previous stage of mineral flotation device; and the floated concentrate flows into a next mineral flotation device for flotation, and the flotation is sequentially carried out until the floated concentrate reaches the preset requirement, and the concentrate meeting the requirement is discharged through a concentrate discharge port 23 of the last stage mineral flotation device. The number of stages of the multistage mineral flotation device can be selected according to actual conditions. After a period of time of flotation, a peristaltic pump 26 is started to convey the tailings at the bottom of the flotation tank 20 of the next-stage mineral flotation device into the flotation tank 20 of the previous-stage mineral flotation device through a tailing discharge port 25 and a tailing conveying pipe 90, so that the tailings of the next stage are sequentially conveyed back into the flotation tank 20 of the previous stage, the tailings are conveyed to the first-stage mineral flotation device for scavenging, and the final tailings are discharged through the tailing discharge port 25 of the first-stage mineral flotation device.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides an experimental multistage mineral flotation device that uses which characterized in that, includes a plurality of mineral flotation device that connect gradually, mineral flotation device includes:
the device comprises a base (10), a flotation motor (11) is installed in the base (10), and a rotating shaft of the flotation motor (11) extends out of the table top of the base (10);
the flotation tank (20) is detachably mounted on the base (10), an impeller (21) is rotatably mounted at the bottom of the flotation tank (20), a rotating shaft of the flotation motor (11) is detachably connected with a rotating shaft of the impeller (21), and the flotation motor (11) is used for driving the impeller (21) to rotate; a guide groove (22) is arranged around the outer side of the top of the flotation tank (20), the guide groove (22) is used for collecting concentrate overflowing from the top of the flotation tank (20), a concentrate discharge port (23) is arranged at the bottom of the guide groove (22), and the concentrate discharge port (23) of the mineral flotation device at the previous stage is communicated with the flotation tank (20) of the mineral flotation device at the next stage through a concentrate conveying pipe (80); a middling inlet (24) and a tailing outlet (25) are respectively arranged on two sides of the lower part of the flotation tank (20), the tailing outlet (25) of the next stage of mineral flotation device is communicated with the middling inlet (24) of the previous stage of mineral flotation device through a tailing conveying pipe (90), and a peristaltic pump (26) is mounted on the tailing conveying pipe (90);
the air pipe (30) extends to the bottom of the flotation tank (20) and is used for introducing air flow into the flotation tank (20); the vent pipe (30) extends to the lower part of the impeller (21);
the mineral flotation device further comprises:
a separation section of thick bamboo (40), a separation section of thick bamboo (40) encircle to set up the periphery of impeller (21), the height on the last edge of a separation section of thick bamboo (40) is less than the height on the last edge of flotation cell (20), a separation section of thick bamboo (40) with leave the clearance that supplies the ore pulp to pass through between the inner wall of flotation cell (20), the lower part of a separation section of thick bamboo (40) is equipped with backward flow grid (41).
2. Experimental multistage mineral flotation device according to claim 1, characterized in that the guide channel (22) is inclined, the height of the guide channel (22) near the concentrate discharge opening (23) being lower than the height of the rest of the guide channel (22).
3. Experimental multistage mineral flotation device according to claim 1, characterized in that the vent pipe (30) protrudes outside the flotation tank (20) through the side wall of the flotation tank (20), the end of the vent pipe (30) protruding outside the flotation tank (20) having a height higher than the upper edge of the flotation tank (20).
4. A pilot multi-stage mineral flotation device according to claim 3, wherein the portion of the vent pipe (30) above the upper edge of the flotation tank (20) is provided with a regulating valve (50).
5. Experimental multistage mineral flotation device according to claim 1, characterized in that it further comprises a heating device (60) and a temperature sensor (70), both the heating device (60) and the temperature sensor (70) being installed in the flotation cell (20).
6. The method of using a pilot multi-stage mineral flotation plant according to any one of claims 1 to 5, comprising the steps of:
s1, adding ore pulp into a flotation tank (20) of a front-stage mineral flotation device, starting stirring and introducing airflow, enabling the ore pulp to move upwards under the action of an impeller (21), enabling the ore pulp to enter a gap between a blocking cylinder (40) and the flotation tank (20) through the upper edge of the blocking cylinder (40) and flow downwards along the gap, enabling the ore pulp at the lower part of the gap to enter the lower part of the blocking cylinder (40) through a backflow grating (41) under the action of negative pressure below the impeller (21) to form backflow, enabling the airflow to be introduced from the lower part of the impeller (21) and then broken into a plurality of micro bubbles under the combined action of the impeller (21) and the blocking cylinder (40), during the continuous reflux process, the mineral attached on the micro-bubbles floats upwards to a foam forming area (27), then the minerals flow into the guide groove (22) by overflowing the upper edge of the flotation tank (20) and are conveyed into the flotation tank (20) of the next stage of mineral flotation device through a concentrate discharge port (23) and a concentrate conveying pipe (80);
s2, adopting the same method as the previous stage mineral flotation device to carry out concentration, leading the floated concentrate to flow into the next stage mineral flotation device for flotation, carrying out concentration for multiple times in sequence until the floated concentrate reaches the preset requirement, and discharging the concentrate meeting the requirement through a concentrate discharge port (23) of the last stage mineral flotation device;
s3, after the backflow flotation is carried out for a period of time, a peristaltic pump (26) is started to convey the tailings at the bottom of the flotation tank (20) of the next-stage mineral flotation device into the flotation tank (20) of the previous-stage mineral flotation device through a tailing discharge port (25) and a tailing conveying pipe (90), so that the tailings of the next stage are conveyed back to the flotation tank (20) of the previous stage in sequence, the tailings are conveyed to the first-stage mineral flotation device for scavenging, and finally the tailings are discharged through the tailing discharge port (25) of the first-stage mineral flotation device.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| RU2728024C1 (en) * | 2019-11-29 | 2020-07-28 | Закрытое акционерное общество "Технологический институт горно-обогатительного машиностроения" (ЗАО "ТИГОМ") | Laboratory flotation machine |
| KR102442975B1 (en) | 2020-04-17 | 2022-09-15 | 한국원자력연구원 | Float sorting device for selective separation of non-metallic minerals |
| CN112642592A (en) * | 2020-12-02 | 2021-04-13 | 苏州海狸生物医学工程有限公司 | Flotation device for micron-sized materials |
| CN114605095A (en) * | 2022-04-01 | 2022-06-10 | 湖北裕得水环保科技有限公司 | One-tower step separation, impurity removal and purification process for phosphogypsum |
| CN117138974A (en) * | 2023-10-23 | 2023-12-01 | 吉林省地质技术装备研究所 | Combined closed-circuit flotation machine for laboratory |
| CN117548237B (en) * | 2024-01-11 | 2024-03-22 | 山东飞天锆业有限公司 | Mineral flotation separation equipment |
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