WO2012167654A1

WO2012167654A1 - Total cross-section pneumatic flotation machine

Info

Publication number: WO2012167654A1
Application number: PCT/CN2012/073408
Authority: WO
Inventors: 张云龙
Original assignee: 烟台鑫海矿山机械有限公司
Priority date: 2011-06-10
Filing date: 2012-03-31
Publication date: 2012-12-13
Also published as: CN102211061A

Abstract

A total cross-section pneumatic flotation machine comprises: a flotation cell (2) and a foam overflow mechanism mounted on the top of the flotation cell (2). An ore pulp inlet (21) and an ore pulp outlet (22) are disposed on a cell body of the flotation cell (2). A one-way valve mounting plate (4) is mounted at the bottom of the cell body of the flotation cell (2). The shape of the one-way valve mounting plate (4) matches the shape of a cross-section of the bottom of the cell body of the flotation cell (2), so as to partition the cell body of the flotation cell (2) into a pulp bearing chamber (20) and an air chamber (10) located below the pulp bearing chamber (20). An ore drawing hole (201) is disposed at a side of the bottom of the pulp bearing chamber (20). An air inlet (101) is disposed at a side of the air chamber (10). A plurality of one-way valves (3) is uniformly distributed on the one-way valve mounting plate (4). The total cross-section pneumatic flotation machine is of a simple structure, is convenient to maintain, improves an ore dressing recovery percentage, reduces energy consumption, makes full use of gas, reduces a drug dosage, prolongs the service life of quick-wear parts, shortens flotation process stages, and reduces the investment in the apparatuses and infrastructure projects.

Description

Full-section inflatable flotation machine

The present invention relates to a beneficiation apparatus, and more particularly to an inflatable flotation machine of metal or non-metallic ore or coal. BACKGROUND OF THE INVENTION In a flotation machine, a slurry treated with a chemical agent is added by agitation or self-priming air, so that some of the ore particles are selectively attached to the air bubbles, and the bubble density of the particles attached to the mineral is small. The surface of the slurry is scraped to form a foam product, and the rest is retained in the slurry to achieve the purpose of separating the minerals.

Commonly used flotation machines are classified into mechanical agitation self-priming air type, mechanical stirring air type, and inflatable type. However, regardless of the mechanically agitated self-priming air type or the inflatable flotation machine, it is necessary to provide a corresponding rotating stirring impeller and stator in the middle of the tank body of the flotation machine, and the air is decomposed into many bubbles by stirring the impeller and the stator. The amount of air bubbles in the same volume determines the total specific surface area of all the bubbles. The larger the total specific surface area of the bubbles, the greater the probability of contact between the bubbles and the minerals, thus improving the recovery rate. The flotation machine stirs the impeller and the stator to decompose the bubbles, the size of the bubbles is not easy to control, and the bubbles are unevenly diffused from the middle of the tank of the flotation machine to the periphery of the tank, and some of the air that is too small to float directly rises to the flotation The upper surface of the machine causes waste of gas, so the efficiency of mineral sorting is very restricted. In addition, gas, liquid, solid, and drug mixing due to bubble dispersion requires a high power-driven stirring device, and the input power consumption is large. At the same time, the bubble rises linearly due to the low density, and the route tube is single. The bubble rise time is too short at the same height of the flotation machine tank, further reducing the chance of contact with the slurry. The foam that rises to the upper surface of the flotation machine tends to accumulate into large bubbles and is not easily broken, thus making it difficult to defoam and foam the next step. The stirring impeller and stator of the flotation machine stirring device are agitated The slurry, the suction (relative to the self-priming flotation machine), the dispersion of bubbles, etc., so the impeller has a higher line speed, a higher energy consumption of 4 inches, and faster wear, which increases the cost of wearing parts. Summary of the invention

In order to solve the problems of low efficiency, high energy consumption and high cost of the mineral sorting of the existing flotation machine, the present invention provides a full-section inflatable flotation machine.

The technical solution of the present invention to solve the above technical problems is as follows: A full-section inflatable flotation machine comprising a flotation tank and a foam overflow mechanism mounted on the top of the flotation tank, the flotation tank body being provided with a slurry inlet and a slurry outlet, a check valve mounting plate is installed at the bottom of the flotation tank, and the check valve mounting plate shape matches the bottom cross-sectional shape of the flotation tank body, thereby The flotation trough body is divided to form a pulp chamber and a gas chamber located below the pulp chamber, a bottom side of the pulp chamber is provided with a discharge port, and one side of the gas chamber is provided with an air inlet, the one-way A plurality of check valves are evenly distributed on the valve mounting plate.

The utility model has the beneficial effects that: the full-section inflatable flotation machine of the invention is divided into a pulp chamber and a gas chamber through a one-way valve mounting plate at the bottom of the flotation machine tank body to inflate the gas chamber, the one-way valve The mounting plate uniformly inflates the bearing chamber through a uniformly sealed one-way valve, and can control the bubble size by controlling the air pressure and flow rate of the air chamber, so that the same amount of air is decomposed as much as possible for mineral sorting. Bubbles, all the air is fully utilized, and the total specific surface area of all the bubbles is maximized, the chance of contact with the bubble fish agent and the slurry is increased, and the total surface area of the bubble is maximized and fully contacted with the slurry, so the recovery rate is greatly increased. improve. At the same time, the full-section inflatable flotation machine of the present invention can eliminate the need for a stirring device, saving energy consumption and cost.

Based on the above technical solutions, the present invention can also be improved as follows.

Further, the flotation trough body has a circular cross section, and the one-way valve mounting plate is a circular flat bottom structure, a conical bottom structure or a spherical bottom structure adapted to the circular shape;

Or,

The flotation trough body has a rectangular cross section, and the one-way valve mounting plate is a rectangular flat bottom structure or a quadrangular pyramid bottom structure adapted to the rectangle; or,

The flotation trough body has a polygonal cross section, and the one-way valve mounting plate is a polygonal flat bottom structure or a polygonal pyramid bottom structure adapted to the polygon.

The beneficial effect of the above further technical solution is that the cross-sectional structure of the flotation trough body of the full-section inflatable flotation machine of the present invention is circular, polygonal, or rectangular, and the ratio of the height and the cross-sectional area of the trough is larger, in the same volume. Under the condition, the floor space is reduced relative to other flotation machines, and the capital investment is reduced. The flotation process phase is shortened because the separation recovery rate is improved under the same flotation machine volume conditions. At the same time, since the check valve mounting plate matches the cross section of the flotation machine, that is, the flotation machine of the present invention is fully inflated, and the bubbles are all distributed on any cross section inside the flotation tank body, so that the medicament is fully utilized. Use, reduce drug consumption.

Further, a drain outlet is disposed on a bottom sidewall of the air chamber.

The advantage of using the above further technical solution is that when the one-way valve is damaged or other failure causes the slurry to enter the air chamber, the sewage outlet can be opened to discharge the slurry or liquid entering the air chamber.

Further, a top of the flotation tank body is provided with a bracket, the foam overflow mechanism is a foam tank, and the bottom of the foam tank has a certain inclination.

The beneficial effect of adopting the above further technical solution is that after the air bubbles rise to the upper surface of the flotation tank body, the overflow flows into the foam tank installed around the top of the tank body to prevent large obstacles from accumulating during the rising of the foaming tank. The phenomenon of large bubbles; the bottom of the foam tank has a certain slope, which is good for discharging foam.

Further, a stirring device is disposed in the flotation tank; the stirring device includes a motor, a transmission mechanism, a main shaft and an impeller, and a top of the flotation trough body is provided with a bracket, and the top of the main shaft is mounted on the bracket The impeller is mounted on the bottom of the main shaft, and the motor drives the main shaft to rotate through the transmission mechanism.

The beneficial effect of using the above further technical solution is that the full-section inflatable flotation machine of the present invention is If necessary, a stirring device may be added, wherein the impeller of the stirring device is not responsible for inhaling, dispersing bubbles, and agitating the slurry, and the purpose thereof is only to assist in further mixing the liquid, solid, medicine and bubbles in the slurry, so The impeller line speed is reduced, the required input power is greatly reduced and the life of the impeller is extended.

Further, a foam damper is installed in the flotation tank.

Further, the foam damper includes at least one damper plate and a support plate connected to the at least one damper plate, the damper plate is uniformly arranged with a plurality of through holes, and the at least one damper plate passes through the The support plate is installed in the flotation machine tank.

Further, the through hole is a circular hole or a square hole.

Further, the shape of the damper plate matches the cross-sectional shape of the flotation machine tank.

Further, the damper plate is provided with a hole for facilitating installation of the flotation machine stirring device. The beneficial effect of adopting the above further solution is that according to actual needs, a corresponding bubble damper device can be added inside the flotation machine tank to change the straight line rising path of the bubble and prevent the small bubbles from coalescing into large bubbles, at the height of the same flotation machine tank. The bubble rise time is extended and the bubble is sufficiently contacted with the slurry, and the bubble damping device may not be provided as needed. Since the total surface area of the bubble is maximized and it is in full contact with the slurry, the rise time is extended at a limited rise height, so the recovery rate is greatly improved. Since the hooks are inflated into smaller bubbles at the bottom of the tank, all the air is fully utilized. Since the bubble size is uniform and passes through the bubble damper device, the bubble is not easily broken during the ascending process, and it is difficult to coalesce when it rises to the surface of the foam groove.

The invention has the beneficial effects that the full-section inflatable flotation machine of the invention has the advantages of simple structure, convenient maintenance, improved beneficiation recovery rate, reduced energy consumption, full utilization of gas, reduced dosage of the medicament, prolonged service life of the wearing parts, and shortened flotation process Stage and reduce equipment and infrastructure investment. DRAWINGS

1 is a schematic structural view of a first embodiment of a full-section inflatable flotation machine according to the present invention; FIG. 2 is a cross-sectional view of a flotation trough body in a first embodiment of a full-section inflatable flotation machine according to the present invention; When the shape is round, the check valve mounting plate is a schematic view of the conical bottom structure;

3 is a schematic view showing a one-way valve mounting plate having a spherical bottom structure when the cross-section of the flotation groove body is circular in the first embodiment of the full-section inflatable flotation machine of the present invention;

4 is a schematic view showing a four-sided pyramid bottom structure when the cross-section valve mounting plate has a rectangular cross section in the first embodiment of the full-section inflatable flotation machine of the present invention;

Figure 5 is a plan view of Figure 4;

6 is a schematic view showing a structure of a multi-prism cone bottom when the cross-section of the flotation groove body is polygonal in the first embodiment of the full-section inflatable flotation machine of the present invention;

Figure 7 is a plan view of Figure 6;

8 is a schematic structural view of a second embodiment of a full-section inflatable flotation machine according to the present invention; FIG. 9 is a schematic structural view of a third embodiment of a full-section inflatable flotation machine according to the present invention; Schematic diagram of a foam damper in a third embodiment of a flotation machine;

Figure 11 is a schematic view showing the structure of a foam damper in a fourth embodiment of the full-section inflatable flotation machine of the present invention.

detailed description

The principles and features of the present invention are described in the following description in conjunction with the accompanying drawings.

Example 1

As shown in FIG. 1, a full-section inflatable flotation machine includes a flotation tank 2 and a foam overflow mechanism installed on the top of the flotation tank 2, and a slurry inlet 21 is disposed on the upper side wall of the flotation tank 2 And a slurry outlet 22, a check valve mounting plate 4 is installed at the bottom of the flotation tank 2, and the shape of the check valve mounting plate 4 matches the bottom cross-sectional shape of the flotation tank 2, that is, the check valve mounting plate 4 The outer peripheral shape is the same as the bottom cross-sectional shape of the flotation tank 2, so that the flotation tank 2 is divided into a working chamber 20 and a gas chamber 10 located below the pulp chamber 20, and the check valve mounting plate 4 is uniformly densely distributed. Multiple check valves 3, 7| The bottom side of the slurry chamber 20 is provided with a discharge port 201, and the slurry outlet 22 is connected to a position at the bottom of the slurry chamber 20 through a pipe, so as to discharge the slurry, and the gas chamber 10 is provided with an air inlet 101 on the side. . The foam overflow mechanism is a foam tank 1 having a slope at the bottom to facilitate the discharge of the foam. A drain outlet 102 is provided on the bottom side wall of the gas chamber 10.

When the cross-sectional shape of the bottom of the flotation tank 2 is circular, square, rectangular or polygonal, the check valve mounting plate 4 may be a circular flat bottom structure, a square flat bottom structure, a rectangular flat bottom structure adapted to the circular shape. Or a polygonal flat bottom structure;

As shown in Fig. 2, the bottom of the flotation tank 2 has a circular cross section, and the check valve mounting plate 4 can also be a conical bottom structure adapted to the circular shape;

As shown in Fig. 3, the bottom of the flotation tank 2 has a circular cross section, and the check valve mounting plate 4 can also be a spherical bottom structure adapted to the circular shape;

As shown in Fig. 4 and Fig. 5, the groove of the flotation tank 2 is rectangular, and the check valve mounting plate 4 may be a rectangular quadrangular pyramid structure adapted to the rectangle;

As shown in Fig. 6 and Fig. 7, the flotation groove 2 has a polygonal cross section, and the check valve mounting plate 4 is a polygonal pyramid bottom structure which is adapted to the polygonal shape.

The full-section inflatable flotation machine of the present invention is divided into a slurry chamber 20 and a gas chamber 10 through a check valve mounting plate 4 at the bottom of the tank of the flotation machine tank 2, and inflates the gas chamber 10, the check valve mounting plate 4 uniformly inflating the pulp chamber 20 through the evenly-closed check valve 3, and controlling the bubble size by controlling the gas pressure and flow rate of the gas chamber 10, so that the same amount of air is decomposed as much as possible into more minerals. The required bubbles, all the air is fully utilized, and the total specific surface area of all the bubbles is maximized, the chance of contact with the bubble fish agent and the slurry is increased, and the total surface area of the bubble is maximized and fully contacted with the slurry, so the recycling is selected. The rate has been greatly improved.

The cross-sectional structure of the trough body of the full-section inflatable flotation machine of the present invention is circular, polygonal, or rectangular, and the ratio of the height and the cross-sectional area of the trough is large, and is reduced relative to other flotation machines under the same volume condition. The small footprint and reduced capital investment have resulted in a shortened flotation process stage due to improved sorting recovery rates under the same flotation machine volume conditions. At the same time, since the check valve mounting plate matches the cross section of the flotation machine, that is, the flotation machine of the present invention is fully inflated, and the bubbles are uniformly distributed in the float. Select any section inside the tank body so that the medicament can be fully utilized to reduce the consumption of the medicament. Example 2

As shown in FIG. 8, the full-section inflatable flotation machine of the present invention may be provided with a stirring device if necessary, the stirring device 5 includes a motor 51, a transmission mechanism 52, a main shaft 53 and an impeller 54, and the flotation tank 2 is provided at the top of the trough body. The bracket 6 and the foam tank 1 are mounted under the bracket 6. The top of the main shaft 53 is mounted on the bracket 6. The impeller 54 is mounted on the bottom of the main shaft 53. The motor 51 drives the main shaft 53 to rotate by the transmission mechanism 52, thereby driving the impeller 54 to rotate.

The impeller 54 of the agitating device does not bear the function of inhaling, dispersing bubbles, and agitating the slurry, and the purpose thereof is only to assist the further mixing of the liquid, solid, medicine and bubbles in the slurry, so that the linear speed of the impeller 54 is reduced. The input power is greatly reduced and the life of the impeller 54 is extended. Example 3

As shown in FIG. 9, a corresponding bubble damper 7 can be added inside the flotation machine tank 2 according to actual needs. As shown in FIG. 10, the foam damper 7 is composed of four damper plates 71 and the four damper plates are connected. A support plate 72 of 71 is formed. The damper plate 71 is uniformly arranged with a plurality of through holes 710, and the four damper plates 71 are installed in the flotation machine body 2 through the support plate 72. The through hole 710 may be a circular hole or a square hole. The shape of the damper plate 71 matches the cross-sectional shape of the flotation machine tank 2.

The foam damper 7 can change the linear rising path of the bubble and prevent the small bubbles from coalescing into large bubbles, prolong the bubble rising time in the tank height of the same flotation machine and make the bubble fully contact with the slurry, and can also be provided with bubble damping as needed. Device. Since the total surface area of the bubble is maximized and it is in full contact with the slurry, the rise time is extended at a limited rise height, so the recovery rate is greatly improved. All air is fully utilized due to uniform inflation into smaller bubbles at the bottom of the tank. Because the bubble size is uniform and passes through the bubble damper device, the bubble is not easily broken during the ascending process, and it is not easy to coalesce when it rises to the upper surface of the foam groove. Example 4 As shown in FIG. 11 , a corresponding bubble damper 7 can be added to the inside of the flotation machine tank 2 according to actual needs, and a stirring device 5 is added, and the damping plate 71 of the bubble damper 7 is provided with a flotation machine for installation. The holes of the stirring device 5.

During the operation of the full-section inflatable flotation machine of the present invention, the slurry flows into the interior of the working chamber 20 of the flotation tank 2 through the slurry inlet 21 on the tank body 2, and the gas is filled into the flotation tank 2 tank by the inlet port 01. The air chamber of the body is 10 inside. Under the action of a certain air pressure in the air chamber 10, the check valve 3 is opened, and the gas passes through a certain opening of the check valve 3 to become a series of small bubbles rising upward and coming into contact with the slurry in the slurry chamber 20, in the collection. The selected mineral adheres to the surface of the bubble by the action of the agent. During the ascending process, the bubbles are further in full contact with the slurry during the process, thereby more adhering the selected minerals. The foam that rises to the top overflows into the foam tank 1 and is discharged to the next stage of operation. The selected slurry is transferred from the slurry outlet 22 of the flotation tank 2 to the next stage of operation. When it is required to stop for a long time, the slurry can be discharged from the ore discharge port 201 at the bottom of the flotation tank 2 tank. When the check valve 3 is damaged or other faults cause the slurry to enter the air chamber 10, the drain port 102 can be opened to discharge the slurry or liquid entering the air chamber 10.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

Claim

A full-section inflatable flotation machine comprising a flotation tank and a foam overflow mechanism mounted on a top of the flotation tank, the flotation tank body being provided with a slurry inlet and a slurry outlet, characterized in that : a check valve mounting plate is mounted on the bottom of the flotation trough body, and the shape of the check valve mounting plate matches the cross-sectional shape of the bottom portion of the flotation trough body, thereby the flotation trough body Dividing into a slurry chamber and a gas chamber located below the pulp chamber, a bottom side of the pulp chamber is provided with a discharge port, and one side of the gas chamber is provided with an air inlet, and the check valve mounting plate is There are multiple check valves in the hook distribution.

2. The full-section inflatable flotation machine according to claim 1, wherein: the flotation trough body has a circular cross section, and the one-way valve mounting plate is adapted to the circular shape. Circular flat bottom structure, conical bottom structure or spherical bottom structure;

Or,

The flotation trough body has a rectangular cross section, and the one-way valve mounting plate is a rectangular flat bottom structure or a quadrangular pyramid bottom structure adapted to the rectangle;

Or,

3. A full-section inflatable flotation machine according to claim 1, wherein: the bottom side wall of the air chamber is provided with a drain outlet.

4. A full-section inflatable flotation machine according to claim 1, wherein: said foam overflow mechanism is a foam tank, and said foam tank bottom has a certain slope.

5. The full-section inflatable flotation machine according to claim 1, wherein: the flotation tank is provided with a stirring device; the stirring device comprises a motor, a transmission mechanism, a main shaft and an impeller. The top of the flotation trough body is provided with a bracket, the top of the main shaft is mounted on the bracket, the impeller is mounted on the bottom of the main shaft, and the motor drives the main shaft to rotate through the transmission mechanism.

6. A full-section inflatable flotation machine according to any one of claims 1 to 5, The problem is that: a foam damper is installed in the flotation tank.

7. A full-section inflatable flotation machine according to claim 6, wherein: said foam damper comprises at least one damper plate and a support plate coupled to said at least one damper plate, said damper plate The close row is uniformly provided with a plurality of through holes, and the at least one damper plate is installed in the flotation machine tank through the support plate.

8. The flotation machine according to claim 7, wherein: the through hole is a circular hole or a square

9. A flotation machine according to claim 7, wherein: the shape of the damper plate matches the cross-sectional shape of the flotation machine body.

The flotation machine according to claim 7, wherein the damper plate is provided with a hole for facilitating installation of the flotation machine stirring device.