CN215901312U - Circulating impact flow flotation column feeding size mixing tank - Google Patents
Circulating impact flow flotation column feeding size mixing tank Download PDFInfo
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- CN215901312U CN215901312U CN202120819726.3U CN202120819726U CN215901312U CN 215901312 U CN215901312 U CN 215901312U CN 202120819726 U CN202120819726 U CN 202120819726U CN 215901312 U CN215901312 U CN 215901312U
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Abstract
The utility model provides a circulation striking flows flotation column pan feeding surge tank, includes the circulation bucket of a set of relative setting, installs the epaxial straight piece impeller, the axial compressor circulation mechanism that impulse impeller and driving motor constitute, is provided with the surge tank of feed inlet and discharge gate, and is provided with the storage vat of bin outlet, two sets of or multiunit axial compressor circulation mechanism coaxial line that surge tank inside set up sets up in opposite directions. The utility model realizes the combination of size mixing and storage, has multiple functions of size mixing such as stirring, circulation, impact mixing and the like, and can effectively solve the problem of low concentrate recovery efficiency caused by the difficult arrangement of the two-stage flotation column feeding and size mixing equipment.
Description
Technical Field
The utility model relates to the field of pretreatment of ore pulp before flotation, in particular to a circulating impinging stream flotation column feeding size mixing tank.
Background
The ore pulp pretreatment is an essential link in the mineral flotation process and is a prerequisite condition for obtaining good technical indexes of a flotation machine. The necessity of pulp pretreatment before flotation lies in: (1) dispersing the flotation reagent, well mixing the dispersed flotation reagent with the ore pulp, and adsorbing a collecting agent in the flotation reagent on the surface of a target mineral to improve the hydrophobicity of the mineral; (2) certain action time and conditions are required for the flotation reagent to perform a physicochemical reaction with the mineral surface; 3) the concentration of the slurry entering the flotation is diluted to a reasonable range.
In the prior pulp pretreatment procedure before flotation, the commonly used pulp pretreatment modes mainly comprise:
(1) mechanical stirring size mixing tank: the traditional mechanical stirring size mixing tank before flotation is evolved from a stirring tank in the chemical industry, a stirring flow field generated by the rotation of one or more paddle stirrers arranged on a main shaft is driven by a motor driving device to realize the dispersion of a medicament and the mixing of ore pulp and the medicament, and a circulating barrel and a baffle on the barrel wall are adopted to strengthen the mixing process.
(2) A pulp preparer: in the 80 s of the last century, the XK series pulp preparer used in the coal mine coal preparation plant in China, for example, the utility model patent named as "atomized mixed coal pulp preprocessor" (application number 201010033384.9) issued the following technical scheme: the atomizing system consists of a main motor, a flexible coupling, a sleeve, a fogging disc, a dosing funnel and the like. The upper box body is a feeding and flotation agent atomization working area, a central feeding groove is arranged on the outer side of the box body, and overflow grooves are arranged on the left side and the right side of the box body. The lower box body is a working space for mixing coal slurry and flotation reagents, three upper sliding plates and two lower sliding plates are arranged on the left side and the right side of the lower box body, and ridge strips with equal heights are uniformly distributed on each sliding plate. When the device is actually used, a flotation reagent flows into the sleeve above the atomizing disc through the dosing hopper and the pipeline and splashes to the central area of the front surface of the atomizing disc. A layer of liquid film is formed on the disc surface which rotates at a high speed, moves to the edge of the disc under the action of centrifugal force and is cut into fog drops by the saw teeth at the edge of the disc; the floating coal slurry is distributed into overflow weirs at two sides of the upper box body through a central feeding groove, and overflows in a waterfall shape along the width of the weir, and meets with the flotation reagent fog drops in the discharging process, and a part of fog drops directly drop on the upper sliding plate of the first layer by gravity.
(3) A jet mixer: the water jet type coal slurry preprocessor widely used in some coal preparation plants in China approximately jets pressure ore slurry from a nozzle at a high speed, forms negative pressure in an ejector, sucks and wraps a flotation reagent into jet flow, and mixes the flotation reagent and the coal slurry at a throat of the ejector after the flotation reagent is hydraulically impacted, sheared and dispersed into oil drops. The slurry mixing mode has the defects of low mixing intensity and uniformity, short retention time and insufficient effect of the medicament and the coal slurry.
The pulp mixing of the existing flotation column feeding mainly comprises the steps that one of the devices is used for mixing pulp and then enters a flotation feeding barrel, the pulp mixing device and the feeding barrel are separately arranged and need certain elevation difference, the occupied area of a factory building is large, and in some processes formed by two short-section flotation columns, ore pulp pretreatment devices are not usually arranged at the second section, so that the effect of the flotation process cannot achieve the expected purpose due to the fact that the feeding of the second section flotation column is not well mixed, the adaptability is poor, and the concentrate recovery efficiency is low. Along with the change of the inheritability of mineral resources in China to poor impurity, the useful mineral has increasingly fine embedded granularity and increasingly complex composition, and the mineral dressing recovery effect of low-grade fine particle mineral resources is always far from ideal.
Disclosure of Invention
In order to solve the problems, the utility model provides a circulating impact flow flotation column feeding size mixing tank which is suitable for high-shear pulp mixing pretreatment of ore pulp before flotation for treating fine-grained coal by a flotation column and realizes the function of circulating collision mixing of the ore pulp and a medicament.
The utility model provides a circulating impinging stream flotation column feeding size mixing tank, which comprises: the device comprises a group of circulation barrels arranged oppositely, a straight blade impeller arranged on a shaft, an axial flow circulation mechanism consisting of a push type impeller and a driving motor, a size mixing tank provided with a feeding port and a discharging port, and a storage barrel provided with a discharging port.
The circulating impinging stream flotation column feeding size mixing tank is characterized in that axial flow circulating mechanisms consisting of the circulating barrel, the straight blade impeller arranged on the shaft, the push type impeller and the driving motor are coaxially and oppositely arranged in the size mixing tank, specifically, two or more groups of axial flow circulating mechanisms are coaxially and oppositely arranged in the size mixing tank, and preferably, two groups of axial flow circulating mechanisms are coaxially and oppositely arranged.
Further, the two sets of axial flow circulating mechanisms are coaxially and oppositely arranged at one or more of the central line or the diagonal line position inside the size mixing tank, and preferably are coaxially and oppositely arranged at the central line position inside the size mixing tank.
The feeding and size mixing tank for the circulating impinging stream flotation column is characterized in that the straight-blade impeller and the propelling impeller form an axial-flow impeller set, specifically, the axial-flow impeller set is formed by one or more groups of straight-blade impellers and one or more groups of propelling impellers, and preferably, the axial-flow impeller set is formed by one group of straight-blade impellers and one group of propelling impellers.
When the circulating impinging stream flotation column feeding size mixing tank works, two sets of axial flow circulating mechanisms which are coaxially and oppositely arranged in the size mixing tank generate two streams of materials to collide in an impinging area, so that the mixed size mixing effect is enhanced. The material flow after size mixing enters a material storage tank through a discharge port, the bottom of the material storage tank is of a structure inclined towards a discharge port, the discharge port is connected with a flotation column feeding pump, and the material flow is pressurized by the pump and then is fed into a flotation column feeding system.
The circulating impinging stream flotation column feeding size mixing tank can combine size mixing and storage into one, simultaneously completes multiple size mixing functions of stirring, circulating, impinging mixing and the like, effectively solves the problem of low concentrate recovery efficiency caused by difficult arrangement of two-stage flotation column feeding size mixing equipment, and has extremely high adaptability.
Drawings
FIG. 1 is a schematic top view of a circulating impinging stream flotation column feed surge tank configuration according to the present invention;
FIG. 2 is a schematic cross-sectional view of a circular impinging stream flotation column feed size mixing tank configuration according to the present invention;
FIG. 3 is a schematic diagram of the working principle of a circulating impinging stream flotation column feed size mixing tank according to the present invention;
in the figure: 1-a circulating barrel, 2-a straight blade impeller, 3-an axial-flow impeller, 4-a driving motor, 5-a size mixing tank, 6-a feeding pipe, 7-a storage barrel, 8-a discharge port and 9-a discharge port.
Detailed Description
The utility model is further described below with reference to the figures and examples.
Fig. 1 is a schematic plan view of a structure of a circulating impinging stream flotation column feeding size mixing tank according to the present invention, and fig. 2 is a schematic sectional view of a structure of a circulating impinging stream flotation column feeding size mixing tank according to the present invention, and as shown in fig. 1 and fig. 2, the circulating impinging stream flotation column feeding size mixing tank according to the present invention includes a set of oppositely disposed circulating buckets 1, a straight blade impeller 2 mounted on a shaft, an axial flow circulating mechanism composed of a propeller-type impeller 3 and a driving motor 4, a size mixing tank 5 provided with a feeding pipe 6 and a discharging port 9, and a storage bucket 7 provided with a discharging port 8. Wherein the straight blade impeller 2 and the propelling impeller 3 form an axial flow impeller set.
Fig. 3 is a schematic view of the working principle of the circulating impinging stream flotation column feeding size mixing tank of the present invention, and as shown in fig. 3, two sets of axial flow circulating mechanisms inside the size mixing tank 5 are coaxially and oppositely arranged.
In the specific implementation: the driving motor 4 drives the transmission device to operate, the transmission device is connected with a horizontally arranged stirring shaft, a stirring axial flow circulating mechanism consisting of a push type impeller 3 and a straight blade impeller 2 is arranged in the range of the stirring shaft positioned in the circulating barrel 1, two groups of axial flow circulating mechanisms are coaxially and oppositely arranged in the size mixing tank 5, and as shown in figure 3, two material flows generated by the stirring axial flow circulating mechanism form collision in a collision area to strengthen the mixing and size mixing effects. The material flow after size mixing overflows through a discharge port 9 and enters a storage tank 7, the bottom of the storage tank 7 is of a structure inclined towards a discharge port 8, the discharge port 8 is connected with a flotation column feeding pump, and the material flow is pressurized by the pump and then is sent into a flotation column feeding system to finish the pulp size mixing process before flotation.
The embodiments of the present invention described above are intended for illustrative purposes only and are not intended to be exhaustive of the common general knowledge of the known specific structures and characteristics. It will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the utility model.
Claims (3)
1. A circulating impinging stream flotation column feed size mixing tank is characterized by comprising: the device comprises a group of circulation barrels arranged oppositely, a straight blade impeller arranged on a shaft, an axial flow circulation mechanism consisting of a push type impeller and a driving motor, a size mixing tank provided with a feeding port and a discharging port, and a storage barrel provided with a discharging port.
2. The circulating impinging stream flotation column feed size mixing tank as claimed in claim 1, wherein two or more sets of axial flow circulating mechanisms disposed inside the size mixing tank are disposed coaxially and oppositely.
3. The circulating impinging stream flotation column feed size mixing tank of claim 1, wherein the straight blade impeller and the pusher impeller form an axial flow impeller set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120819726.3U CN215901312U (en) | 2021-04-21 | 2021-04-21 | Circulating impact flow flotation column feeding size mixing tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120819726.3U CN215901312U (en) | 2021-04-21 | 2021-04-21 | Circulating impact flow flotation column feeding size mixing tank |
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| Publication Number | Publication Date |
|---|---|
| CN215901312U true CN215901312U (en) | 2022-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120819726.3U Active CN215901312U (en) | 2021-04-21 | 2021-04-21 | Circulating impact flow flotation column feeding size mixing tank |
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|---|---|
| CN (1) | CN215901312U (en) |
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2021
- 2021-04-21 CN CN202120819726.3U patent/CN215901312U/en active Active
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