CN209772413U - Tertiary flotation device is used in graphite production - Google Patents

Abstract

The utility model discloses a three-stage flotation device for graphite production, which relates to the technical field of graphite production, and has the technical scheme that the three-stage flotation device comprises three flotation tanks, wherein each flotation tank is sequentially provided with at least two communicated flotation tanks side by side, and one end of each flotation tank is provided with a charging pipe communicated with the flotation tanks; a first stirring mechanism is arranged in each flotation tank of the first-stage flotation station and the second-stage flotation station, and a second stirring mechanism is arranged in each flotation tank of the third-stage flotation station; one side of the flotation tank is provided with a water tank along the length direction, and the water tank is separated from the three flotation tanks by partition plates; the bottom of the water tank is provided with a discharge pipe which is connected with a feed pipe of another flotation tank through a pumping pump. The utility model provides a problem that fixed carbon content is low when present graphite flotation machine carries out graphite flotation, can improve the fixed carbon content of concentrate, improve graphite flotation quality.

Description

tertiary flotation device is used in graphite production

Technical Field

The utility model relates to a graphite production technical field, more specifically the saying so, it relates to a tertiary flotation device is used in graphite production.

background

Graphite is a high-energy crystalline carbon material, and is widely applied to the fields of metallurgy, machinery, environmental protection, chemical industry and the like due to the unique structure and the characteristics of electric conduction, heat conduction, lubrication, high temperature resistance, stable chemical performance and the like. The flotation method is commonly adopted to obtain high-grade high-quality graphite, and the fundamental principle is as follows: according to the good natural hydrophobicity of graphite, the surface of the graphite is not easy to be soaked by water, the hydrophobic property of the graphite or the hydrophilic and hydrophobic properties of the graphite are obtained under the action of a flotation reagent, and the graphite is gathered at a liquid-gas interface by virtue of bubble buoyancy in an ore pulp system to separate from impurity minerals, so that the aim of purification is fulfilled. Graphite is generally produced by subjecting graphite ore to a flotation process, and a common apparatus is a flotation machine.

The utility model discloses a chinese utility model patent that grant bulletin number is CN207605881U discloses a graphite flotation device for raw ore processing, including the dead lever, the dead lever top is fixed with the flotation tank, be equipped with first feed inlet on the lateral wall of flotation tank, the flotation tank is kept away from and is equipped with the second feed inlet on the lateral wall of first feed inlet, the first pivot of flotation tank roof intermediate position slip airtight connection, be fixed with the negative pressure pterygoid lamina in the first pivot, flotation tank bottom is fixed with the installing frame, and the installing frame all is equipped with open cuboid structure for top and bottom, the inner wall of installing frame is equipped with the track along vertical direction, movable mounting has the mobile device in the track, be connected with the connecting rod on the mobile device. The utility model discloses a be applicable to the flotation of different liquid level materials, improve the suitability of flotation device, nevertheless have following not enoughly: the rotating shaft drives the negative pressure wing plate to rotate to generate centrifugal action to form negative pressure, so that air and ore pulp are mixed, and mineralized foam can be effectively formed under the action of a flotation reagent.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a tertiary flotation device is used in graphite production can improve the fixed carbon content of concentrate through hierarchical flotation, improves product quality.

In order to achieve the above purpose, the utility model provides a following technical scheme: a three-stage flotation device for graphite production comprises flotation tanks with three flotation stations, wherein each flotation tank is sequentially provided with at least two communicated flotation tanks side by side, and a charging pipe communicated with the flotation tanks is arranged at one end of each flotation tank; the flotation tanks of the first-stage flotation station and the second-stage flotation station are respectively provided with a first stirring mechanism, the flotation tank of the third-stage flotation station is provided with a second stirring mechanism, the second stirring mechanism comprises a stirring shaft, a stirring paddle arranged on the stirring shaft and a power component for driving the stirring shaft to rotate, the interiors of the stirring shaft and the stirring paddle are hollow and communicated, the end part of the stirring shaft is connected with an air pipe through a universal joint, and the stirring paddle is provided with an air hole communicated with the interior of the stirring shaft; one side of the flotation tank is provided with a water tank along the length direction, and the water tank is separated from the three flotation tanks by partition plates; the bottom of the water tank is provided with a discharge pipe which is connected with a feed pipe of another flotation tank through a pumping pump.

Through adopting above-mentioned technical scheme, when the ore pulp passes through the flotation cell of one-level flotation station, the work of first rabbling mechanism makes ore pulp and air mix and forms the bubble, and graphite in the ore pulp accompanies the bubble come-up, and the foam that contains graphite spills over to the basin in, and the well foam of the three flotation cell of one-level flotation station is concentrated in basin department and is collected and flow through the discharging pipe. And the graphite subjected to the primary flotation enters a secondary flotation station, and the flotation process is the same as that of the primary flotation, so that the impurities in the graphite foam are further reduced. Graphite foam that arrives after the second grade flotation carries out tertiary flotation in entering into the flotation tank of tertiary flotation station, and power component drives the stirring rake and rotates, and gas enters into the stirring rake and through the gas pocket blowout along the (mixing) shaft simultaneously, improves bubble quantity, is favorable to the graphite in the ore pulp along with gaseous come-up, increases flotation graphite quantity in the unit interval, improves flotation efficiency. The universal joint makes the air pipe not rotate when the stirring shaft rotates, and the air pipe is prevented from twisting. Compared with the traditional primary flotation, the fixed carbon content of the finally obtained graphite concentrate is greatly improved, and the product quality is improved.

The utility model discloses further set up to: first rabbling mechanism includes the (mixing) shaft, installs stirring paddle and drive (mixing) shaft pivoted motor on the (mixing) shaft, and it has set firmly the retaining ring to lie in the stirring paddle periphery in the flotation cell, and the top of retaining ring is higher than the flotation cell, and the lateral wall of retaining ring is equipped with out the discharge orifice along circumference.

through adopting above-mentioned technical scheme, because the effect of retaining ring, pass out the discharge orifice when the foam spills over for the foam breaks, and in the liquid was entered into again to some silicon dioxide impurity that mix with in the foam, the fixed carbon content of graphite concentrate that makes the flotation select improved greatly.

The utility model discloses further set up to: one side of the clapboard close to the water tank extends to form an inclined flow guide surface.

Through adopting above-mentioned technical scheme, the water conservancy diversion face can prevent that the graphite thick liquid from following the baffle lateral wall and downflow, keeps the cleanness of baffle.

The utility model discloses further set up to: a rectangular opening is formed in the side wall between every two adjacent flotation tanks, and a baffle used for adjusting the height of the bottom end of the rectangular opening is connected to the rectangular opening in a sliding mode.

By adjusting the height of the baffle, the area of the rectangular opening is correspondingly changed, so that the flow of ore pulp flowing from the flotation cell to the next flotation cell can be controlled, and the flotation efficiency is controlled.

The utility model discloses further set up to: slots are arranged on two sides of the rectangular opening, and the baffle is inserted into the slots and can move up and down.

By adopting the technical scheme, the baffle plate is simple in moving and fixing structure, convenient to manufacture and low in maintenance cost.

The utility model discloses further set up to: the bottom level of the (mixing) shaft of second rabbling mechanism has set firmly the dispersion impeller, and the edge of dispersion impeller is equipped with a plurality of upwarping and the folded piece of downwarping.

Through adopting above-mentioned technical scheme, when the stirring rake rotated, the hem that upwarps and downwarping rotated at a high speed and cut the ore pulp for probably the material of conglomeration is broken up in the ore pulp, is favorable to graphite to emerge.

The utility model discloses further set up to: the upper surface of dispersion impeller is equipped with the circle tooth along the (mixing) shaft circumference, and the (mixing) shaft is close to dispersion impeller one end and is connected with the cross axle along radial setting through the bearing, rotates on the cross axle to be connected with and circles the dish that turns of tooth meshing.

Through adopting above-mentioned technical scheme, when the stirring rake rotated, the dish that turns with circle tooth meshing rotated thereupon, and the stirring rake makes the ore pulp rotatory, turns over the dish and makes the ore pulp turn from top to bottom, and the graphite come-up of the ore pulp bottom is accelerated.

The utility model discloses further set up to: the discharging pipe is arranged at one end of the water tank, and the bottom wall of the water tank is gradually raised from one end of the discharging pipe to the other end.

Through adopting above-mentioned technical scheme, because basin diapire slope is favorable to the foam to flow to the discharging pipe along basin diapire is automatic.

The utility model discloses further set up to: the upper part of one end of the water tank close to the discharge pipe is connected with a water inlet pipe, and the water spraying direction of the water inlet pipe points to the other end of the water tank.

Through adopting above-mentioned technical scheme, inlet tube spun water washes the basin, and the foam that has graphite with higher speed flows, can wash the basin simultaneously.

To sum up, the utility model discloses compare and have following beneficial effect in prior art:

1. The ore pulp is subjected to three-stage flotation, and the fixed carbon content of the graphite concentrate obtained by the traditional one-stage flotation is greatly improved;

2. In the first-stage flotation, due to the action of the retainer ring, foam passes through the outflow hole when overflowing, and large-particle impurities mixed in the foam are filtered; meanwhile, the foam is broken when passing through the outflow hole, large bubbles are broken into small bubbles, and in the process, impurities with higher density, such as silicon dioxide, in the foam sink back to the ore pulp again, so that the fixed carbon content of the floated graphite concentrate is greatly improved;

3. In the tertiary flotation stirring process, gas enters into the stirring rake along the (mixing) shaft and through the gas pocket blowout, improves bubble quantity, is favorable to the graphite in the ore pulp along with gaseous come-up, increases flotation graphite quantity in the unit interval, improves flotation efficiency.

Drawings

FIG. 1 is a schematic view of the overall structure of the embodiment;

FIG. 2 is an isometric view showing the arrangement of baffles at the location of the side walls of two adjacent flotation cells;

3 FIG. 3 3 3 is 3 a 3 sectional 3 view 3 in 3 the 3 direction 3 A 3- 3 A 3 in 3 FIG. 3 1 3 showing 3 the 3 connection 3 relationship 3 between 3 a 3 retainer 3 ring 3 and 3 a 3 stirring 3 mechanism 3 in 3 the 3 primary 3 flotation 3 process 3; 3

Fig. 4 is a sectional view showing the internal structure of the agitating mechanism in the tertiary flotation process, taken along the direction B-B in fig. 1.

Reference numerals: 1. a flotation tank; 11. a feed tube; 12. a side plate; 121. a rectangular opening; 122. a slot; 13. a flotation cell; 14. a baffle plate; 15. a top cover; 16. a flow guide surface; 2. a water tank; 21. a water inlet pipe; 22. a discharge pipe; 3. a main water pipe; 4. a pump; 5. a retainer ring; 51. an outflow hole; 6. a first stirring mechanism; 61. a first motor; 62. a first stirring shaft; 63. a first stirring paddle; 7. a second stirring mechanism; 71. a second motor; 72. a driving pulley; 73. a driven pulley; 74. a belt; 75. a second stirring shaft; 751. a universal joint; 752. an air tube; 76. a second stirring paddle; 761. air holes; 77. a dispersion tray; 771. a first flap; 772. a second flap; 78. a horizontal axis; 79. and (4) turning over the disc.

Detailed Description

Example (b): a three-stage flotation device for graphite production is disclosed, as shown in fig. 1 and fig. 2, and comprises three flotation stations which are arranged in sequence, wherein each flotation station is provided with a flotation tank 1 with an open top and a hollow interior, the interior of the flotation tank 1 is divided into three flotation tanks 13 through two side plates 12, the top of the flotation tank 1 is provided with a top cover 15, the flotation tanks 13 of the first-stage flotation station and the second-stage flotation station are respectively provided with a first stirring mechanism 6, the first stirring mechanism 6 of the first-stage flotation station is provided with a cylindrical check ring 5 around the flotation tank 13, and one end, close to the top cover 15, of the check ring 5 is provided with a plurality of outflow holes 51 along the circumferential direction; a second stirring mechanism 7 is arranged in each flotation tank 13 of the third-stage flotation station; the side wall of each flotation tank 1 is provided with a water tank 2, the water tank 2 is provided with a water inlet pipe 21, the bottom wall of the water tank 2 is provided with a discharge pipe 22, the discharge pipe 22 is connected with a pumping pump 4, and the pumping pump pumps graphite ore pulp floated at the previous station to the flotation tank 1 at the next station. Graphite ore pulp is added into a flotation tank 13 of a primary flotation station, a first stirring mechanism 6 works to stir the ore pulp for primary flotation, the floated ore pulp is transferred to a secondary flotation station, and the floated ore pulp of the secondary flotation station is transferred to a tertiary flotation station. And the ore pulp is subjected to three-stage flotation to improve the fixed carbon content of the graphite concentrate.

Referring to fig. 1 and 2, a feed pipe 11 is provided at one end of the flotation tank 1, and the feed pipe 11 is communicated with the upper portion of the flotation tank 13. And the charging pipes 11 of the second-stage flotation station and the third-stage flotation station are connected with the outlet of the pumping pump 4. The side plate 12 is provided with a rectangular opening 121, two sides of the rectangular opening 121 are provided with slots 122, the baffle plate 14 is inserted into the slots 122, and the baffle plate 14 can slide up and down along the slots 122. After the graphite slurry enters the first flotation cell 13 from the feed tube 11, the slurry can flow to the second flotation cell 13 when the slurry level is above the bottom of the rectangular opening 121. And similarly, after the liquid level of the ore pulp in the second flotation tank 13 is higher than the bottom end of the rectangular opening 121, the ore pulp flows into the third flotation tank 13, so that the feeding can be performed at one time through the feeding pipe 11, and the operation is convenient. The size of the rectangular opening 121 can be adjusted by moving the position of the baffle 14, the flow of ore pulp can be controlled, one or two rectangular openings 121 can be completely blocked according to different flotation quantities of the ore pulp, and only one or two first stirring mechanisms 6 are used for participating in flotation, so that the applicability is wide.

referring to fig. 2 and 3, the bottom wall of the water tank 2 is inclined from one end of the feed pipe 11 to the other end of the flotation tank 1, the water inlet pipe 21 is installed at the top of the end of the water tank 2 far away from the feed pipe 11, and the discharge pipe 22 is installed at the bottom wall of the end of the water tank 2 far away from the feed pipe 11. When the froth in the flotation tank 13 overflows it flows into the water tank 2, which facilitates the froth to flow along the bottom wall of the water tank 2 automatically towards the discharge pipe 22, due to the inclination of the bottom wall of the water tank 2. The top of the side wall of the flotation tank 1 close to the side of the water tank 2 is provided with a flow guide surface 16, and the flow guide surface 16 protrudes out of the side wall of the flotation tank 1 for a certain distance, which can be 30-80mm, so that foam directly drops into the water tank 2 when flowing and falling along the flow guide surface 16, and the side wall pollution caused by the flow of the foam along the side wall of the flotation tank 1 is avoided. The spray direction of inlet tube 21 sets up along basin 2 length direction to inlet tube 21 spun water washes basin 2, and the foam that has the graphite with higher speed flows, can wash basin 2 simultaneously. The water inlet pipe 21 is connected with a main water pipe 3, and the main water pipe 3 is connected with an external water source.

referring to fig. 1 and 3, the top of the retainer ring 5 can be bolted to the top cover 15, and the outlet holes 51 in the retainer ring 5 are flush with the guide surface 16 or are located slightly above the guide surface 16. The diameter of the outflow hole 51 may be 8mm to 15 mm.

The first stirring mechanism 6 comprises a first stirring shaft 62 vertically penetrating through the top cover 15 and rotating relatively, a plurality of first stirring paddles 63 installed on the first stirring shaft 62, and a first motor 61 driving the first stirring shaft 62 to rotate, wherein the first motor 61 is fixed on the top cover 15 through bolts. First motor 61 work drives first (mixing) shaft 62 and rotates, first stirring rake 63 rotates the ore pulp rotation in driving flotation cell 13 thereupon, ore pulp and air mix produce the bubble, graphite in the ore pulp is along with the slurry upper strata of bubble come-up, the bubble spills over through the play discharge orifice 51 of retaining ring 5, the large granule impurity that contains in the bubble is filtered when passing through the play discharge orifice 51, can take place to break when the bubble passes through the play discharge orifice 51 simultaneously, in the great impurity of silica density that thoughtlessly appears in the bubble falls back the ore pulp again, graphite spills over to concentrate the collection in basin 2 along with the bubble, improve the fixed carbon content of graphite concentrate.

As large particles in the ore pulp separated by the first-stage flotation are few, a check ring 5 is not needed to be arranged in the second-stage flotation station.

Referring to fig. 1 and 4, the second stirring mechanism 7 includes a second stirring shaft 75 vertically penetrating through the top cover 15 and relatively rotating, a plurality of second stirring paddles 76 installed at the bottom end of the second stirring shaft 75, and a power assembly driving the second stirring shaft 75 to rotate; the second stirring shaft 75 and the second stirring paddle 76 are hollow, the second stirring paddle 76 is communicated with the second stirring shaft 75, and a plurality of air holes 761 are formed in the surface of the second stirring paddle 76. The top end of the second stirring shaft 75 is connected with a universal joint 751, the universal joint 751 is connected with an air pipe 752, and the air pipe 752 is connected with an external high-pressure air source. The power component works to drive the second stirring shaft 75 to rotate, the second stirring paddle 76 arranged on the second stirring shaft 75 stirs the ore pulp, gas enters the second stirring shaft 75 from the gas pipe 752, and then the gas is sprayed out through the gas holes 761 on the second stirring paddle 76, so that the second stirring paddle 76 sprays out bubbles while stirring, and the floating amount of graphite in the ore pulp is increased.

The power assembly comprises a second motor 71 fixedly arranged on the top cover 15 through bolts, a driving pulley 72 arranged at the end part of an output shaft of the second motor 71 and a driven pulley 73 coaxially fixed at the top end of a second stirring shaft 75, and the driven pulley 73 is in belt transmission connection with the driving pulley 72 through a belt 74. According to the requirement, a gear transmission can be also adopted between the second motor 71 and the second stirring shaft 75.

Referring to fig. 4, a dispersing plate 77 is horizontally fixed at the bottom end of the second stirring shaft 75, the dispersing plate 77 is provided with a plurality of first folding pieces 771 and second folding pieces 772 along the circumferential direction, the plurality of first folding pieces 771 are tilted upward and uniformly distributed, and the plurality of second folding pieces 772 are tilted downward and uniformly distributed. When dispersion dish 77 rotates along with second (mixing) shaft 75 at a high speed, first fold piece 771 rotates and cuts the ore pulp with second fold piece 772 at a high speed for the material that probably agglomerates in the ore pulp is broken up, is favorable to graphite to emerge.

Ring teeth (not shown in the figure) are arranged on the upper surface of the dispersion disc 77 along the circumferential direction, a transverse shaft 78 is arranged at one end, close to the dispersion disc 77, of the second stirring shaft 75 along the radial direction, the transverse shaft 78 is rotatably connected with the second stirring shaft 75 through a bearing, a turning disc 79 is rotatably connected to the tail end of the transverse shaft 78, and the turning disc 79 is meshed with the ring teeth. The dispersion plate 77 rotates to drive the ring teeth to rotate, and the stirring plate 79 meshed with the ring teeth rotates around the transverse shaft 78, so that the ore pulp at the bottom flows upwards, and the stirring of the second stirring paddle 76 is facilitated.

The working principle of the three-stage flotation device for graphite production is as follows:

The slurry passes from the feed tube 11 into the first flotation cell 13 of the primary flotation station and the movable baffle 14 opens the rectangular opening 121 as required to allow slurry to flow into the remaining flotation cells 13 to increase flotation efficiency.

The first stirring mechanism 6 of the primary flotation station works to mix ore pulp and air to generate bubbles, and graphite in the ore pulp floats upwards along with the bubbles. Along with the bubble come-up, a large amount of foams float on the ore pulp upper strata, and the foam spills over from the play discharge orifice 51 in retaining ring 5, and the large granule impurity that is thoughtlessly in the foam is filtered, and the foam can break when passing through play discharge orifice 51 simultaneously, and big bubble breakage is little bubble, and in this in-process, the great impurity of silicon dioxide isopycnic density in the foam sinks back to the ore pulp again, and graphite spills over to the basin 2 along water conservancy diversion face 16 along with the foam.

The water sprayed from the water inlet pipe 21 washes the foam in the water tank 2, so that the foam flows out from the discharge pipe 22 along with the water flow, and the diluted ore pulp is pumped into the flotation tank 13 of the secondary flotation station through the pumping pump 4 and is subjected to secondary flotation.

graphite ore pulp that the secondary floated elected flows to and shifts to tertiary flotation station through pump 4 again behind the basin 2, and second rabbling mechanism 7 stirs the ore pulp, and at this in-process, gas flows into second stirring rake 76 along second (mixing) shaft 75, then gas from gas pocket 761 blowout, increases bubble quantity in the ore pulp, improves graphite floating amount, improves flotation efficiency. The fixed carbon content of the graphite concentrate obtained by the three-time flotation of the raw ore pulp is greatly improved.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims (8)

1. The utility model provides a graphite production is with tertiary flotation device, includes flotation tank (1) of three flotation station, its characterized in that: each flotation tank (1) is sequentially provided with at least two communicated flotation tanks (13) side by side, and one end of each flotation tank (1) is provided with a feed pipe (11) communicated with the flotation tanks (13); a first stirring mechanism (6) is arranged in each of the flotation tanks (13) of the first-stage flotation station and the second-stage flotation station, a second stirring mechanism (7) is arranged in each of the flotation tanks (13) of the third-stage flotation station, each second stirring mechanism (7) comprises a stirring shaft, a stirring paddle arranged on the stirring shaft and a power assembly driving the stirring shaft to rotate, the stirring shaft and the stirring paddle are hollow and communicated, the end part of the stirring shaft is connected with an air pipe (752) through a universal joint (751), and the stirring paddle is provided with an air hole (761) communicated with the interior of the stirring shaft; one side of the flotation tank (1) is provided with a water tank (2) along the length direction, and the water tank (2) is separated from the three flotation tanks (13) through partition plates; the bottom of the water tank (2) is provided with a discharge pipe (22), and the discharge pipe (22) is connected with a feed pipe (11) of another flotation tank (1) through a pumping pump (4).

2. The three-stage flotation device for graphite production according to claim 1, wherein: first rabbling mechanism (6) include the (mixing) shaft, install stirring paddle and drive (mixing) shaft pivoted motor on the (mixing) shaft, lie in the stirring paddle periphery in flotation cell (13) and set firmly retaining ring (5), the top of retaining ring (5) is higher than flotation cell (13), and the lateral wall of retaining ring (5) is equipped with discharge orifice (51) along circumference.

3. The three-stage flotation device for graphite production according to claim 1, wherein: an inclined flow guide surface (16) extends from one side of the clapboard close to the water tank (2).

4. The three-stage flotation device for graphite production according to claim 1, wherein: rectangular opening (121) have been seted up to the lateral wall between two adjacent flotation cell (13), and slide in rectangular opening (121) and be connected with baffle (14) that are used for adjusting rectangular opening (121) bottom height.

5. The three-stage flotation device for graphite production according to claim 1, wherein: the bottom end level of the (mixing) shaft of second rabbling mechanism (7) has set firmly dispersion impeller (77), and the edge of dispersion impeller (77) is equipped with a plurality of upwarping and the folded piece of downwarping.

6. The three-stage flotation device for graphite production according to claim 5, wherein: the upper surface of dispersion impeller (77) is equipped with the circle tooth along the (mixing) shaft circumference, and the (mixing) shaft is close to dispersion impeller (77) one end and is connected with through the bearing along radial cross axle (78) that sets up, rotates on cross axle (78) to be connected with and circles the dish (79) that turns over of tooth meshing.

7. The three-stage flotation device for graphite production according to claim 1, wherein: the discharging pipe (22) is arranged at one end of the water tank (2), and the bottom wall of the water tank (2) is gradually raised from one end of the discharging pipe (22) to the other end.

8. The three-stage flotation device for graphite production according to claim 7, wherein: the water tank (2) is connected with a water inlet pipe (21) at the upper part of one end close to the discharge pipe (22), and the water spraying direction of the water inlet pipe (21) points to the other end of the water tank (2).