SF type flotation machine for phosphoric acid beneficiation

Abstract

The utility model discloses an SF type flotation machine for phosphoric acid beneficiation. The SF type flotation machine comprises a groove body, a power system, a center cylinder, a stirring system and a scraper system. The air distributor is arranged to uniformly distribute the sucked air, so that a large amount of fine bubbles can be formed, and the generation of the bubbles is further facilitated; the slurry on the dispersing cover can be sucked into an upper impeller cavity through the through holes, so that slurry upper circulation is formed; the backward-inclined lower blade and the backward-inclined upper blade are arranged, so that slurry in the tank is subjected to upper and lower double circulation, and the suspension of coarse-grain minerals is facilitated; a large gap between the impeller and the dispersion cover is arranged, and the air suction amount is large. The ore pulp and air are self-sucked, the air suction amount is large, the number of auxiliary devices is small, and operation and maintenance are easy.

Description

Technical Field

[0001] The utility model relates to the field of flotation machine equipment, in particular to an SF type flotation machine for phosphoric acid ore dressing. Background Art

[0002] Due to the complex and diverse structure of phosphate rock, the complex mineral occurrence relationships, the fine distribution particle size, the close mosaic relationships, the widespread intermingling and symbiosis, and the difficulty in separating individual components, flotation is the most widely used phosphate ore beneficiation process. Flotation cells can be divided into mechanical agitation flotation cells, aeration agitation flotation cells, and aeration flotation cells. Models include XJ, XJQ, GF, SF, CHF-X, XJC, BS-C, KYF, BS-K, LCH-X, and CLF. SF flotation cells are popular due to their self-priming slurry and air, minimal auxiliary equipment, neat configuration, and simple operation and maintenance.

[0003] For example, the Chinese invention patent application CN206951417U discloses an SF-type pneumatic flotation machine middling discharge device, comprising a flotation machine cell, a gate plate, a discharge gate door, and a turbine screw elevator. It also comprises a gate plate slot, a chute, and a slider. The gate plate slot is provided on the flotation machine cell, a discharge gate door is provided in the gate plate slot, a gate plate is provided inside the discharge gate door, and a gate plate is provided inside the discharge gate door. The upper end of the gate plate is connected to the turbine screw elevator, and the gate plate controls the lower opening of the discharge gate door. This utility model adjusts the middling discharge process to a "lower opening" discharge method for slurry, staggers the interface between the slurry layer and the foam layer to discharge the slurry, avoids the depletion of the trough and foam product, increases the thickness of the upper foam layer, improves the secondary enrichment effect of the foam, effectively improves the enrichment ratio of the selection operation, and significantly improves the grade of the gold concentrate.

[0004] It can be seen from the above patents that the feed port of the above patented equipment is located at the top of the box, and a feeding mechanism is provided inside the box to repeatedly stir the flocculant and the material in multiple directions inside the box. During the stirring process, the solid-liquid separation is not obvious, and the ore-containing slurry may flow out from the overflow weir, resulting in ore loss.

[0005] Although the SF flotation machine has many advantages, it also has shortcomings such as small air intake, slow foam movement speed, high energy consumption, and large wear, which need to be improved. Summary of the Invention

[0006] The purpose of the utility model is to solve the deficiencies of the prior art and to provide an SF type flotation machine for phosphoric acid beneficiation.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0008] An SF type flotation machine for phosphoric acid beneficiation, comprising a tank body, a power system, a central cylinder, a stirring system and a scraper system;

[0009] The tank body includes a tank body, a false bottom, a guide pipe, a feed port, a discharge port and a foam outlet; the tank body is a hollow tank, and the false bottom and the guide pipe are arranged in sequence from the bottom to the top of the tank body, and the feed port, the discharge port and the foam outlet are respectively arranged on the right and left walls of the tank body;

[0010] The power system includes a rotating shaft, a pulley, a bearing and a main motor; the rotating shaft passes through the top center of the tank body and is rotatably connected to the top center of the tank body, the rotating shaft is upwardly connected to the pulley, the outer periphery of the rotating shaft is covered with a bearing, and the main motor is arranged on the top of the tank body;

[0011] The central tube includes a central tube body, an air intake pipe, a dispersion cover, an air distributor and a through hole; the central tube body is arranged above the interior of the tank body, the upper side wall of the central tube body is connected to the air intake pipe, and the dispersion cover is arranged at the bottom of the central tube body; the air distributor is arranged at the center where the dispersion cover and the central tube body overlap; a through hole is arranged on the outer end of the dispersion cover;

[0012] The stirring system includes an impeller, lower blades and upper blades; the stirring system is arranged below the central tube, the impeller is arranged at the bottom of the rotating shaft, and the lower blades and upper blades are respectively arranged below and above the outer end of the impeller.

[0013] Preferably, the scraper system includes a scraper and a scraper motor; a scraper is arranged on the upper part of the trough body at a position horizontally parallel to the foam outlet, and a scraper motor is arranged on the top of the trough body, and the scraper motor is connected to and drives the scraper.

[0014] Preferably, the mouth of the air intake pipe extends upward to a position horizontally parallel to the foam outlet.

[0015] Preferably, the lower blades and the upper blades are backward inclined blades.

[0016] Preferably, the trough body is a forward-inclined trough body.

[0017] Preferably, the gap between the impeller and the dispersion cover is larger than the gap between the impeller and the guide tube.

[0018] The beneficial effects of the utility model are:

[0019] 1. Setting up an air distributor to evenly distribute the inhaled air is conducive to forming more and more small bubbles, which in turn is conducive to the production of foam;

[0020] 2. Through holes are set so that the slurry on the dispersion cover can be sucked into the upper impeller cavity to form an upward circulation of the slurry;

[0021] 3. The backward-inclined lower and upper blades are set, and the slurry in the tank realizes double circulation up and down in a fixed flow mode, which is conducive to the suspension of coarse-grained minerals;

[0022] 4. The forward-leaning tank has small dead angles and fast foam movement speed;

[0023] 5. Set a larger gap between the impeller and the dispersion cover to increase the space of the upper impeller cavity, which is conducive to large air intake and low energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely exemplary, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0025] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons skilled in the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in sizes, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0026] Figure 1 This is a schematic structural diagram of an SF type flotation machine for phosphoric acid beneficiation proposed in the present invention;

[0027] Figure 1 Shown in: 1. trough body, 11. trough body, 12. false bottom, 13. guide pipe, 14. feed port, 15. discharge port, 16. foam outlet, 2. power system, 21. rotating shaft, 22. pulley, 23. bearing, 24. main motor, 3. center tube, 31. center tube body, 32. suction pipe, 33. dispersion hood, 34. air distributor, 35. through hole, 4. stirring system, 41. impeller, 42. lower blade, 43. upper blade, 5. scraper system, 51. scraper, 52. scraper motor. DETAILED DESCRIPTION

[0028] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0029] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0030] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0031] It should be noted that similar reference numerals and letters tend to denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0032] In the description of the present utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "front," "back," "vertical," "horizontal," "inner," "outer," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is typically placed when in use, or are directions or positional relationships commonly understood by those skilled in the art. These terms are intended only to facilitate the description of the present utility model and to simplify the description, and are not intended to indicate or imply that the device or element referred to must have a specific direction, be constructed and operate in a specific direction. Therefore, they should not be understood as limiting the present utility model. In addition, the terms "first," "second," etc., etc., are used only to distinguish descriptions and should not be understood as indicating or implying relative importance.

[0033] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0034] Reference Figure 1The utility model discloses an SF type flotation machine for phosphate beneficiation, which includes a tank body 1, a power system 2, a central tube 3, a stirring system 4 and a scraper system 5.

[0035] The trough body 1 includes a trough body 11, a false bottom 12, a guide pipe 13, a feed port 14, a discharge port 15 and a foam outlet 16; the forward-inclined trough body 1 is used for flotation of slurry, with small dead angles and fast foam movement speed; the false bottom 12 and the guide pipe 13 are used to guide the slurry to form a regular flow, and the feed port 14, the discharge port 15 and the foam outlet 16 are respectively used for feeding slurry, discharging concentrate and discharging foam.

[0036] The power system 2 includes a rotating shaft 21, a pulley 22, a bearing 23 and a main motor 24. The main motor 24 provides power by driving the rotating shaft 21 to rotate through the pulley 22; the central tube 3 includes a central tube body 31, an air intake pipe 32, a dispersion cover 33, an air distributor 34 and a through hole 35. The mouth of the air intake pipe 32 extends upward to a position horizontally parallel to the foam outlet 16 for automatic air intake; the dispersion cover 33 is used to stabilize the flow of the slurry; the air distributor 34 evenly distributes the inhaled air, which is conducive to the formation of more and more small bubbles, and thus conducive to the generation of foam; the through hole 35 allows the slurry on the dispersion cover 33 to be sucked into the upper impeller cavity to form a slurry upper circulation.

[0037] The stirring system 4 includes an impeller 41, lower blades 42, and upper blades 43. The lower and upper blades 42 and 43 are positioned below and above the outer ends of the impeller 41, respectively. The impeller 41 is driven by the rotating shaft 21, which in turn drives the lower and upper blades 42 and 43 to rotate, fully stirring the slurry. The slurry in the tank circulates upward and downward in a fixed flow pattern, which facilitates the suspension of coarse-grained minerals. The scraper system 5 includes a scraper 51 and a scraper motor 52. The scraper motor 52 drives the scraper 51 to scrape the suspended foam out of the foam outlet 16.

[0038] In an optional embodiment, the gap between the impeller 41 and the dispersion cover 33 is larger than the gap between the impeller 41 and the guide tube 13. A larger gap between the impeller 41 and the dispersion cover 33 is set to increase the space of the upper impeller cavity, which is conducive to large air intake and low energy consumption.

[0039] The flotation process of this embodiment is as follows:

[0040] Main motor 24 drives shaft 21 via pulley 22. Shaft 21 drives impeller 41, which in turn drives lower blades 42 and upper blades 43. The slurry in the upper and lower impeller cavities is centrifugally forced by upper and lower blades 43 and flung outward, creating negative pressure zones in the upper and lower impeller cavities. Slurry in the upper portion of dispersion hood 33 is drawn into the upper impeller cavity through through-hole 35 in dispersion hood 33, forming an upward circulation of slurry in the upper impeller cavity. As lower blades 42 fling slurry outward, their lower portion replenishes the slurry in the center, forming a downward circulation of slurry in the lower impeller cavity and simultaneously promoting automatic suction of slurry from feed port 14. The slurry flung out of the lower impeller cavity has a higher specific gravity than the three-phase mixture flung out of upper blades 43, resulting in a greater centrifugal force and slower decay of velocity. Furthermore, additional propulsion is generated on the three-phase mixture flung out of upper blades 43, increasing its centrifugal force and thereby increasing the vacuum level in the upper impeller cavity, thus assisting suction.

[0041] Air is drawn into the air distributor 34 through the suction pipe 32 and the central cylinder 31. The air distributor 34 evenly distributes the inhaled air, forming a large number of fine bubbles. These bubbles are then drawn into the upper impeller chamber, mixed with the inhaled slurry, and stabilized by the dispersion cover 33 before being evenly dispersed in the tank to form suspended bubbles. The suspended bubbles rise to the top of the slurry, where they are driven by the scraper motor 52, driving the scraper 51 to scrape the suspended foam out of the foam outlet 16.

[0042] Of course, the embodiments of this specific implementation method are all preferred embodiments of the present utility model, and are not intended to limit the scope of protection of the present utility model. Therefore, any equivalent changes made based on the structure, shape, and principle of the present utility model should be included in the scope of protection of the present utility model.

Claims

1. An SF type flotation machine for phosphoric acid beneficiation, characterized by: It comprises a tank body (1), a power system (2), a central cylinder (3), a stirring system (4) and a scraper system (5); The tank body (1) comprises a tank body (11), a false bottom (12), a flow guide pipe (13), a feed port (14), a discharge port (15) and a foam outlet (16); the tank body (11) is a hollow tank, the false bottom (12) and the flow guide pipe (13) are sequentially arranged in the tank body (11) from the bottom upward, and the feed port (14), the discharge port (15) and the foam outlet (16) are respectively arranged on the right side wall and the left side wall of the tank body (11); The power system (2) includes a rotating shaft (21), a pulley (22), a bearing (23) and a main motor (24); the rotating shaft (21) passes through the top center of the trough body (11) and is rotatably connected to the top center of the trough body (11); the rotating shaft (21) is upwardly connected to the pulley (22); the outer periphery of the rotating shaft (21) is covered with a bearing (23); and the main motor (24) is provided at the top of the trough body (11); The central tube (3) comprises a central tube body (31), an air intake pipe (32), a dispersion cover (33), an air distributor (34) and a through hole (35); the central tube body (31) is arranged above the interior of the tank body (11); the air intake pipe (32) is connected to the upper side wall of the central tube body (31); the dispersion cover (33) is arranged at the bottom of the central tube body (31); the air distributor (34) is arranged at the center where the dispersion cover (33) and the central tube body (31) overlap; and the through hole (35) is arranged on the outer end of the dispersion cover (33); The stirring system (4) comprises an impeller (41), lower blades (42) and upper blades (43); the stirring system (4) is arranged below the central cylinder (3), the impeller (41) is arranged at the bottom of the rotating shaft (21), and the lower blades (42) and upper blades (43) are arranged below and above the outer end of the impeller (41), respectively.

2. The SF type flotation machine for phosphoric acid beneficiation according to claim 1, characterized in that: The scraper system (5) comprises a scraper (51) and a scraper motor (52); the scraper (51) is arranged on the upper part of the tank body (11) at a position horizontally parallel to the foam outlet (16), and the scraper motor (52) is arranged on the top of the tank body (11); the scraper motor (52) is connected to and drives the scraper (51).

3. The SF type flotation machine for phosphoric acid beneficiation according to claim 1, characterized in that: The mouth of the air intake pipe (32) extends upward to a position horizontally parallel to the foam outlet (16).

4. The SF type flotation machine for phosphoric acid beneficiation according to claim 1, characterized in that: The lower blade (42) and the upper blade (43) are backward-inclined blades.

5. The SF type flotation machine for phosphoric acid beneficiation according to claim 1, characterized in that: The trough body (1) is a forward-leaning trough body.

6. The SF type flotation machine for phosphoric acid beneficiation according to claim 1, characterized in that: The gap between the impeller (41) and the dispersion cover (33) is larger than the gap between the impeller (41) and the flow guide tube (13).

Images