Defoaming flotation tank

Abstract

The utility model relates to a defoaming flotation tank which comprises a mechanical defoaming device, a flotation tank body and a stirring device, and the stirring device is suspended above the middle of the flotation tank body; the flotation tank body is cylindrical; the lower portion of the flotation tank body is connected with an ore pulp pipe and a water outlet pipe, an air inlet pipe is arranged at the bottom of the flotation tank body, and a defoaming groove is formed in the outer side of the top of the flotation tank body. A water outlet channel is arranged at the bottom of the defoaming tank and is connected to a water return tank; the bottom of the water return tank is communicated to the flotation tank body through a water return pump; sprayed water is returned into the flotation tank again to form a cycle, waste of a water source is avoided, meanwhile, for a reverse flotation method, it is equivalent to that floating bubbles are washed again, useful minerals are recycled into the flotation tank after being washed again, and the situation that the grade of the minerals in the flotation tank is excessively reduced is avoided.

Description

Technical Field

[0001] The present application relates to the technical field of mineral processing equipment, and in particular to a defoaming flotation cell. Background Art

[0002] In mineral processing, flotation is the most widely used mineral processing method. When using bubble flotation, the minerals to be selected are placed in the bubbles according to the needs. There are also related processes to reverse the selection and precipitate the required minerals. Regardless of the selection method, bubbles will be generated throughout the process. The bubbles are collected or eliminated according to the specific mineral processing method. In the reverse selection method, the bubbles will also carry certain minerals, which will cause the ore grade to decrease. Moreover, since a large amount of mineral flotation reagents are adsorbed on the foam, when the foam is discharged from the flotation plant along with the wastewater, the foam floats on the wastewater, which is difficult to handle and pollutes the environment. At present, the main methods for removing flotation foam are stirring defoaming method, spray defoaming method, and silicone defoaming method. Among them, spray defoaming is the most commonly used. However, the existing spray defoaming has low efficiency, high water consumption, and inconvenient equipment installation. Utility Model Content

[0003] In order to solve or partially solve the problems existing in the related art, the present application provides a defoaming flotation tank, including a mechanical defoamer, a flotation tank body and a stirring device, wherein the stirring device is suspended above the middle of the flotation tank body; the flotation tank body is configured in a cylindrical shape; a slurry pipe and a water outlet pipe are connected to the lower part of the flotation tank body, an air inlet pipe is provided at the bottom of the flotation tank body, and a defoaming tank is configured on the outer side of the top of the flotation tank body;

[0004] An obliquely extending defoaming baffle is provided on the outer top of the defoaming tank, one end of the defoaming baffle is located above the outer side of the flotation tank body, and forms a gap with the top of the flotation tank body for the floating bubbles to enter the defoaming tank;

[0005] A defoaming nozzle is arranged on the defoaming baffle, and the defoaming nozzle is connected to a return pipe through a pipeline and a spray pump, and the return pipe is arranged on the flotation tank body;

[0006] A water outlet channel is provided at the bottom of the defoaming tank and connected to a return water tank, and the bottom of the return water tank is connected to the flotation tank body through a return water pump.

[0007] Optionally, in some embodiments of the first aspect, a step is provided at the lower middle portion of the defoaming tank, and a detachable filter plate is provided on the step.

[0008] Optionally, in some embodiments of the first aspect, the spray pump is connected to the return pipe and the water source respectively through a three-way pipe.

[0009] Optionally, in some embodiments of the first aspect, a bubble delivery pipe connected to a mechanical defoamer is provided on the side wall of the defoaming tank.

[0010] Optionally, in some embodiments of the first aspect, a bubble baffle is provided on the stirring device, and the bubble baffle is connected to the rotation output end of the stirring device via a reduction gear.

[0011] Optionally, in some embodiments of the first aspect, the return water tank is respectively connected to the flotation tank body and the collection tank through a three-way pipe.

[0012] The technical solution provided by this application may have the following beneficial effects:

[0013] The present application returns the sprayed water to the flotation tank to form a cycle, thereby avoiding the waste of water. At the same time, for the counter-selection method, it is equivalent to washing the flotation bubbles again, and the useful minerals are washed again and recycled into the flotation tank to avoid the excessive reduction of the mineral quality in the flotation tank.

[0014] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0016] Figure 1 It is a structural schematic diagram shown in an embodiment of the present application;

[0017] Reference numerals:

[0018] A flotation tank body (1), an air inlet pipe (2), a slurry pipe (3), a water outlet pipe (4), a defoaming tank (5), a defoaming baffle plate (6), a defoaming nozzle (7), a stirring device (8), a bubble baffle plate (9), a filter plate (10), a bubble delivery pipe (11), a return water tank (12), a return water pump (13), a spray pump (14), and a return water pipe (15). DETAILED DESCRIPTION

[0019] The embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0020] It should be understood that although the terms "first", "second", "third", etc. may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other. For example, without departing from the scope of this application, the first information may also be referred to as the second information, and similarly, the second information may also be referred to as the first information. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0021] In the description of the present application, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0022] Unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0023] In view of the problems in the above background technology, the embodiment of the present application provides a defoaming flotation cell. The technical solution of the embodiment of the present application is described in detail below in conjunction with the accompanying drawings.

[0024] Figure 1It is a structural schematic diagram of an embodiment of the present application, wherein the defoaming flotation tank comprises a mechanical defoamer, a flotation tank body 1 and a stirring device 8, wherein the stirring device 8 is suspended above the middle of the flotation tank body 1 to stir the flotation tank body 1. The device sets the flotation tank body 1 in a cylindrical shape, and a slurry pipe 3 is connected to the lower part of the flotation tank body 1 to connect the slurry, and a water outlet pipe 4 is set to send and discharge the ore dressing water. An air inlet pipe 2 is set at the bottom of the flotation tank body 1 to connect to the air source to provide air for ore dressing, and a defoaming tank 5 is constructed on the top outer side of the flotation tank body 1 to collect floating bubbles. The tank body is also provided with an obliquely extending defoaming baffle 6 on the outer top of the defoaming tank 5 to block the floating bubbles and prevent the floating bubbles from overflowing the defoaming tank 5 when entering the flotation tank body 1. One end of the defoaming baffle 6 is located above the outer side of the flotation tank body 1, and forms a gap with the top of the flotation tank body 1 for the floating bubbles to enter the defoaming tank 5. In order to facilitate defoaming, the present application still adopts spray defoaming, but the present application is provided with a defoaming nozzle 7 on the defoaming baffle 6, and the defoaming nozzle 7 is connected to the return pipe 15 through a pipeline and a spray pump 14, and the return pipe 15 is provided on the flotation tank body 1. In this way, the water in the flotation tank body 1 is directly extracted by the spray pump 14 as defoaming water, avoiding excessive waste caused by the additional use of new water sources. At the same time, a water outlet channel is provided at the bottom of the defoaming tank 5 and connected to the return water tank 12, and the bottom of the return water tank 12 is connected to the flotation tank body 1 through the return water pump 13. In this way, the sprayed water is returned to the flotation tank body 1 again to form a cycle, that is, the waste of the water source is avoided. At the same time, for the reverse selection method, it is equivalent to washing the flotation bubbles again, and the useful minerals are washed again and recycled into the flotation tank body 1 to avoid the transitional reduction of the mineral taste in the flotation tank body 1.

[0025] In one embodiment, simple spraying cannot completely eliminate the floating bubbles. Moreover, the first defoaming in the present application is not simply future defoaming, but more of a recovery of floating bubble minerals. Therefore, a step is provided in the middle and lower part of the defoaming tank 5, and a detachable filter plate 10 is provided on the step. The filter plate 10 is used to isolate the floating bubbles that are not easy to be eliminated, so as to facilitate the circulation of water.

[0026] In one embodiment, the spray pump 14 is connected to the return pipe 15 and the water source through a three-way pipe. When the water concentration in the flotation tank 1 is too high to wash and defoam the bubbles, a new water source is used to defoam. At the same time, the device can also close the return pump and use a special defoaming solvent to eliminate the bubbles, and the collected water is treated separately.

[0027] In one embodiment, in order to be used in conjunction with the previous embodiment, the return water tank 12 is connected to the flotation tank body 1 and the collection tank respectively through a three-way pipe.

[0028] In one embodiment, for the floating bubbles that cannot be eliminated by washing, a bubble delivery pipe 11 is provided on the side wall of the defoaming tank 5 and connected to a mechanical defoamer, and the floating bubbles floating on the filter plate 10 are delivered to the mechanical defoamer through the bubble delivery pipe 11 for defoaming. It should be noted that the bubble delivery pipe 11 needs to actively suck out the floating bubbles through a pump, and the mechanical defoamer is reasonably selected according to the needs, for example, a FGFRD-C type mechanical defoamer is selected.

[0029] In one embodiment, in order to conveniently block the bubbles from the flotation tank 1 to the defoaming tank 5, a bubble blocking plate 9 is provided on the stirring device 8, and the bubble blocking plate 9 is connected to the rotating output end of the stirring device 8 through a reduction gear.

[0030] Finally, it should be noted that, in this article, relationships such as first and second, etc. are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms include, include or any other variations are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0031] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A defoaming flotation cell, comprising a mechanical defoamer, a flotation cell body (1) and a stirring device (8), wherein the stirring device (8) is suspended above the middle of the flotation cell body (1); characterized in that: The flotation tank body (1) is arranged in a cylindrical shape; a slurry pipe (3) and a water outlet pipe (4) are connected to the lower part of the flotation tank body (1); an air inlet pipe (2) is arranged at the bottom of the flotation tank body (1); and a defoaming tank (5) is constructed on the outer side of the top of the flotation tank body (1); An obliquely extending defoaming baffle (6) is provided on the top of the outer side of the defoaming tank (5); one end of the defoaming baffle (6) is located above the outer side of the flotation tank body (1) and forms a gap with the top of the flotation tank body (1) for the floating bubbles to enter the defoaming tank (5); A defoaming nozzle (7) is arranged on the defoaming baffle (6), and the defoaming nozzle (7) is connected to a return pipe (15) through a pipeline and a spray pump (14), and the return pipe (15) is arranged on the flotation tank body (1); A water outlet channel is provided at the bottom of the defoaming tank (5) and is connected to a return water tank (12); the bottom of the return water tank (12) is connected to the flotation tank body (1) via a return water pump (13).

2. A defoaming flotation cell according to claim 1, characterized in that: A step is provided at the middle and lower part of the defoaming tank (5), and a detachable filter plate (10) is provided on the step.

3. A defoaming flotation cell according to claim 1, characterized in that: The spray pump (14) is connected to the return pipe (15) and the water source respectively through a three-way pipe.

4. A defoaming flotation cell according to claim 1, characterized in that: A bubble delivery pipe (11) is arranged on the side wall of the defoaming tank (5) and is connected to a mechanical defoamer.

5. A defoaming flotation cell according to claim 1, characterized in that: A bubble blocking plate (9) is provided on the stirring device (8), and the bubble blocking plate (9) is connected to the rotation output end of the stirring device (8) via a reduction gear.

6. A defoaming flotation cell according to claim 1 or 3, characterized in that: The return water tank (12) is respectively connected to the flotation tank body (1) and the collection tank through a three-way pipe.

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