CN110681275B - Rotational flow stirring and mixing device and method - Google Patents
Rotational flow stirring and mixing device and method Download PDFInfo
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- CN110681275B CN110681275B CN201910976188.6A CN201910976188A CN110681275B CN 110681275 B CN110681275 B CN 110681275B CN 201910976188 A CN201910976188 A CN 201910976188A CN 110681275 B CN110681275 B CN 110681275B
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- 238000003756 stirring Methods 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 12
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 18
- 239000011707 mineral Substances 0.000 claims abstract description 18
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000003814 drug Substances 0.000 claims abstract description 13
- 230000000694 effects Effects 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims description 18
- 238000010008 shearing Methods 0.000 claims description 14
- 230000009471 action Effects 0.000 claims description 7
- 238000009792 diffusion process Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002002 slurry Substances 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 239000000126 substance Substances 0.000 description 5
- 238000005188 flotation Methods 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000013043 chemical agent Substances 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010907 mechanical stirring Methods 0.000 description 1
- CJRQAPHWCGEATR-UHFFFAOYSA-N n-methyl-n-prop-2-ynylbutan-2-amine Chemical compound CCC(C)N(C)CC#C CJRQAPHWCGEATR-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F25/10—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components
- B01F25/102—Mixing by creating a vortex flow, e.g. by tangential introduction of flow components wherein the vortex is created by two or more jets introduced tangentially in separate mixing chambers or consecutively in the same mixing chamber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03B—SEPARATING SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS
- B03B1/00—Conditioning for facilitating separation by altering physical properties of the matter to be treated
- B03B1/04—Conditioning for facilitating separation by altering physical properties of the matter to be treated by additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
- B01F2025/91—Direction of flow or arrangement of feed and discharge openings
- B01F2025/914—Tangential flow, i.e. flow spiraling in a tangential direction in a flat plane or belt-like area
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/50—Mixing mined ingredients and liquid to obtain slurries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
A rotational flow stirring and mixing device and a rotational flow stirring and mixing method are suitable for the field of mineral processing. The device comprises a cylinder body and a booster pump, wherein a plurality of rows of convex blocks are arranged in the middle of the inner wall surface of the cylinder body along the vertical direction, an exhaust port is arranged at the top of the cylinder body, an ore pulp discharge port is arranged at the bottom of the cylinder body, a raw material port is arranged above the side surface of the cylinder body, and a circulating outlet is arranged on the side surface below; the middle part in the cylinder is provided with an upper inverted cone and a lower inverted cone which are oppositely arranged to form a cross-flow mixer, the cross-flow mixer is fixed at the central position in the cylinder through a plurality of fixed rods, the inlet of the booster pump is connected with the circulating outlet through a pipeline, the outlet of the booster pump is connected with the inlet of the cross-flow mixer through a pipeline, and a medicine feeding port is arranged on the pipeline between the inlet and the circulating outlet of the booster pump. The stirring device not only can realize a good stirring effect, but also has the advantages of simple structure, convenience in maintenance, low cost and long service life.
Description
Technical Field
The invention relates to a stirring and mixing device and a stirring and mixing method, in particular to a rotational flow stirring and mixing device and a rotational flow stirring and mixing method which are suitable for the field of mineral processing.
Background
Before ore pulp or coal slime enters a flotation separation device for flotation, good premixing treatment and reagent addition are generally needed to modify the surface of mineral particles so as to improve the flotation index. If the mixing is insufficient, the mineral particles adhere to each other to form large particle aggregates, which cause uneven dispersion of the pulp, deterioration of floatability, and reduction of selectivity. In order to improve the floatability of the mineral particles, it is generally necessary to add a chemical agent to the surface of the mineral particles in a stirring apparatus so as to modify the surface of the mineral particles by adsorbing the chemical agent on the surface of the mineral particles, thereby improving the properties of the mineral such as hydrophobicity. Mechanical stirring mode is common in the prior premixing treatment of ore pulp and medicament, but the stirring mode has the defects in the aspect of strengthening the spreading and adsorption of the medicament on the particle surface, and the stirring mode needs to be improved. The water power stirring is generally carried out by impact with the help of high-speed fluid with large energy through a reasonably arranged device structure, the mixing effect of ore pulp and the like is realized, and the device has a great guiding effect on designing a novel stirring and mixing device.
Disclosure of Invention
The technical problem is as follows: in order to solve the problems, the invention provides the rotational flow stirring and mixing device and the rotational flow stirring and mixing method which have the advantages of simple structure, convenience in operation and good stirring effect, have no impeller rotating mechanism inside, can reduce the abrasion of sealing parts and the like, reduce the trouble of parking and maintenance, use high-speed fluid as a power source, and reasonably set the structure of the stirring device, so that ore pulp generates strong rotational flow opposite impact turbulence and shearing mixing, and can achieve good stirring and mixing effects.
The technical scheme is as follows: in order to achieve the purpose, the rotational flow stirring and mixing device comprises a cylinder and a booster pump, wherein the cylinder is a closed cylindrical cavity, a plurality of rows of convex blocks are arranged in the middle of the inner wall surface of the cavity along the vertical direction, and the convex blocks are used for changing the flow field of ore pulp on the inner wall surface of the cavity, so that the ore pulp is prevented from rotating on the inner wall surface and the turbulent flow diffusion of the ore pulp on the inner wall surface is effectively enhanced; the top of the cylinder is provided with an exhaust port, the bottom of the cylinder is provided with an ore pulp discharge port, a raw material port is arranged above the side surface of the cylinder, and a circulating outlet is arranged on the side surface below the cylinder; the middle part in the cylinder is provided with a cross-flow mixer which is fixed at the central position in the cylinder through a plurality of fixed rods, the inlet of the booster pump is connected with the circulating outlet through a pipeline, the outlet of the booster pump is connected with the inlet of the cross-flow mixer through a pipeline, and a medicine feeding port is arranged on the pipeline between the inlet and the circulating outlet of the booster pump.
The cross-flow mixer comprises a lower inverted cone and an upper inverted cone which are arranged concentrically with the cylinder, the lower inverted cone and the upper inverted cone are of conical structures with upper and lower openings, the lower inverted cone and the upper inverted cone both comprise a large opening and a small opening, the large opening of the lower inverted cone faces upwards, the large opening of the upper inverted cone faces downwards, the large openings of the lower inverted cone and the upper inverted cone are arranged oppositely, a plurality of lower circulation inlet pipes are uniformly arranged on the side wall of the lower inverted cone in two opposite directions, a plurality of upper circulation inlet pipes are uniformly arranged on the side wall of the upper inverted cone in two opposite directions, the ends of the lower circulation inlet pipes and the upper circulation inlet pipes respectively penetrate through the cylinder and extend to the outside, and all the lower circulation inlet pipes and the upper circulation inlet pipes are connected with outlets of the booster pump through pipelines.
The lower circulation inlet pipe is tangent to the side wall surface of the lower inverted cone and is arranged along the clockwise direction, the upper circulation inlet pipe is tangent to the side wall surface of the upper inverted cone and is arranged along the anticlockwise direction, and the number of the arranged pipes of the lower circulation inlet pipe and the number of the arranged pipes of the upper circulation inlet pipe are the same and are 2-4.
The diameter of the cylinder body is D, and the height of the cylinder body is 2D.
The big opening diameter of lower part back taper and upper portion back taper is 0.6~0.8D, and lower part back taper and upper portion back taper height are 0.125D, and the back taper angle is 64, and the interval of lower part back taper and upper portion back taper is 1.1~ 1.3D.
The convex blocks are intensively distributed on the wall of the cavity in the cylinder body at the outer side of the cross-flow mixer, the cone angle of the convex blocks is 60 degrees, at least 4 rows are arranged, the number of each row is 6, the convex blocks are uniformly distributed, and the arrangement modes of the convex blocks in adjacent rows can be staggered.
The thickness of the bump is 0.05D.
A mixing method of a rotational flow stirring and mixing device comprises the following steps:
a, when the primary ore pulp is used for the first time, the ore pulp discharge port is closed, raw ore pulp formed by mineral particles and water according to a proper proportion is added into the barrel from the raw material port to form primary ore pulp, and the primary ore pulp is filled in the barrel and then the addition of the raw ore pulp is stopped;
b, starting a booster pump to pump the primary ore pulp out of the circulating outlet, pressurizing the primary ore pulp by the booster pump, and feeding the pressurized primary ore pulp into the cylinder body from the lower circulating inlet pipe and the upper circulating inlet pipe respectively;
c, pressurized ore pulp of the lower circulating inlet pipe enters the lower inverted cone tangentially, and then moves upwards clockwise spirally around the inner wall surface of the lower inverted cone to drive the ore pulp at the lower part of the cylinder to form clockwise shearing movement, so that shearing is enhanced;
d, pressurized ore pulp of the upper circulating inlet pipe enters the upper inverted cone tangentially, and spirally moves downwards anticlockwise around the inner wall surface of the upper inverted cone under pressure, and the ore pulp on the upper part of the cylinder forms anticlockwise shearing movement to enhance ore pulp shearing;
e, the ore pulp which is sheared and moves clockwise in the cylinder collides with the ore pulp which moves downwards in a counterclockwise spiral mode in a swirling manner in the middle of the cylinder to form cross flow mixing, meanwhile, the ore pulp which moves close to the wall surface in the cylinder changes a flow field under the action of a convex block in the cylinder, the turbulent diffusion of the ore pulp on the wall surface is enhanced, and meanwhile, the whole rotation of the ore pulp on the wall surface is also prevented; the ore pulp in the cylinder body circularly flows under the action of the booster pump so as to enhance the mixing effect of the ore pulp;
f, after circulation for a plurality of times, the ore pulp is fully mixed and then is discharged by opening an ore pulp discharge port;
and g, continuously feeding the raw material pulp through a raw material port, and continuously discharging the raw material pulp through an ore pulp discharge port.
The dosing port is used for mixing pure ore pulp when being closed; the chemical adding port is opened as required, so that the pure ore pulp can be stirred and mixed, and the chemicals can be added in proportion to be adsorbed on the surfaces of the mineral particles in the cylinder body, so that the surface properties of the mineral particles are improved.
When the slurry is mixed with air, the air is discharged through the exhaust hole.
Has the advantages that: the invention arranges two lower inverted cones and upper inverted cones with opposite mounting directions in the cylinder body, realizes the counter-rotational flow collision of the ore pulp of the upper part and the lower part, can achieve the good mixing and medicament adsorption purposes under the strong shearing action of the collision flow field and the rotational flow, arranges a plurality of rows of convex blocks on the inner wall surface, increases the turbulence degree near the wall surface in the cylinder body, and enhances the mixing and adsorption effect of particles and medicaments; the whole stirring process is carried out in the closed cylinder body, leakage cannot be generated, and the problem of safety and medicament pollution cannot be caused by the impeller-free rotating mechanism. The stirring device not only can realize a good stirring effect, but also has the advantages of simple structure, convenience in maintenance, low cost and long service life.
Drawings
FIG. 1 is a schematic structural view of a swirling stirring mixing device according to the present invention;
FIG. 2 is a schematic view of the structure inside the cylinder of the swirling stirring mixing device of the present invention;
FIG. 3 is a top view of the swirling mixing device of the present invention;
fig. 4 is a schematic view of the lower inverted cone structure in the present invention.
In the figure: 1-cylinder, 2-bump, 3-ore pulp discharge port, 4-circulation outlet, 5-lower inverted cone, 6-lower circulation inlet pipe, 7-upper inverted cone, 8-upper circulation inlet pipe, 9-exhaust port, 10-raw material port, 11-fixed rod, 12-chemical feeding port and 13-booster pump.
Detailed Description
The invention will be further explained with reference to the drawings.
As shown in fig. 1, a rotational flow stirring and mixing device comprises a cylinder 1 and a booster pump 13, wherein the cylinder 1 is a closed cylindrical cavity, a plurality of rows of convex blocks 2 are arranged in the middle of the inner wall surface of the cavity along the vertical direction, the convex blocks 2 are intensively distributed on the inner cavity wall of the cylinder 1 at the outer side of a cross flow mixer, the cone angle of the convex blocks 2 is 60 degrees, at least 4 rows are provided, the number of each row is 6, the convex blocks are uniformly distributed, the arrangement mode of the convex blocks 2 in adjacent rows can be staggered, and the flow field of ore pulp on the wall surface close to the cavity is changed by using the convex blocks 2, so that the ore pulp is prevented from rotating on the wall surface to effectively enhance the turbulent flow diffusion of; the top of the cylinder body 1 is provided with an exhaust port 9, the bottom of the cylinder body is provided with an ore pulp discharge port 3, a raw material port 10 is arranged above the side surface of the cylinder body 1, and a circulating outlet 4 is arranged on the side surface below the cylinder body; the middle part in the barrel 1 is provided with a cross-flow mixer which is fixed at the central position in the barrel 1 through a plurality of fixing rods 11, the inlet of a booster pump 13 is connected with a circulating outlet 4 through a pipeline, the outlet of the booster pump is connected with the inlet of the cross-flow mixer through a pipeline, and a medicine feeding port 12 is arranged on the pipeline between the inlet of the booster pump 13 and the circulating outlet 4.
As shown in fig. 2 and 3, the cross-flow mixer includes a lower reverse cone 5 and an upper reverse cone 7 concentrically arranged with the barrel 1, the lower reverse cone 5 and the upper reverse cone 7 are both cone structures with upper and lower openings, the lower reverse cone 5 and the upper reverse cone 7 both include a large opening and a small opening, the large opening of the lower reverse cone 5 is upward, the large opening of the upper reverse cone 7 is downward, the large openings of the lower reverse cone 5 and the upper reverse cone 7 are oppositely arranged, a plurality of lower circulation inlet pipes 6 are uniformly arranged on the side wall of the lower reverse cone 5 in two opposite directions, a plurality of upper circulation inlet pipes 8 are uniformly arranged on the side wall of the upper reverse cone 7 in two opposite directions, the ends of the lower circulation inlet pipe 6 and the upper circulation inlet pipe 8 respectively penetrate through the cylinder 1 and extend to the outside, and all the lower circulation inlet pipes 6 and the upper circulation inlet pipes 8 are connected with the outlets of the booster pumps 13 through pipelines.
As shown in fig. 4, the lower circulation inlet pipe 6 is tangent to the side wall surface of the lower inverted cone 5 and arranged in a clockwise direction, the upper circulation inlet pipe 8 is tangent to the side wall surface of the upper inverted cone 7 and arranged in a counterclockwise direction, and the lower circulation inlet pipe 6 and the upper circulation inlet pipe 8 are arranged in the same number of pipes, which is 2-4.
The diameter of the cylinder body 1 is D, and the height of the cylinder body 1 is 2D; the big opening diameter of lower part back taper 5 and upper portion back taper 7 is 0.6~0.8D, and lower part back taper 5 and upper portion back taper 7 highly are 0.125D, and the back taper angle is 64, and the interval of lower part back taper 5 and upper portion back taper 7 is 1.1~1.3D, and the thickness of protruding piece 2 is 0.05D.
A mixing method of a rotational flow stirring and mixing device comprises the following steps:
a, when the primary ore pulp is used for the first time, the ore pulp discharge port 3 is closed, raw ore pulp formed by mineral particles and water according to a proper proportion is added into the cylinder 1 from the raw material port 10 to form primary ore pulp, and the primary ore pulp is filled in the cylinder 1 and then the raw ore pulp is stopped to be added;
b, starting a booster pump 13 to pump the primary ore pulp out of the circulating outlet 4, pressurizing the primary ore pulp by the booster pump 13, and feeding the pressurized primary ore pulp into the barrel 1 from the lower circulating inlet pipe 6 and the upper circulating inlet pipe 8 respectively;
c, pressurized ore pulp of the lower circulating inlet pipe 6 enters the lower inverted cone 5 in a tangential direction, and then spirally moves upwards clockwise around the inner wall surface of the lower inverted cone 5 to drive the ore pulp at the lower part of the cylinder 1 to form clockwise shearing movement, so that shearing is enhanced;
d, pressurized ore pulp entering the upper inverted cone 7 from the upper circulating inlet pipe 8 along the tangential direction moves downwards in an anticlockwise spiral mode around the inner wall surface of the upper inverted cone 7 under the pressure, and the ore pulp on the upper portion of the barrel 1 forms anticlockwise shearing movement to enhance ore pulp shearing;
e, the ore pulp which is sheared and moves clockwise in the cylinder 1 collides with the ore pulp which moves downwards in a counterclockwise spiral mode in a swirling manner in the middle of the cylinder 1 to form cross flow mixing, meanwhile, the ore pulp which moves close to the wall surface in the cylinder 1 changes a flow field under the action of the convex blocks 2 in the cylinder 1, the turbulent diffusion of the ore pulp on the wall surface is enhanced, and meanwhile, the whole rotation of the ore pulp on the wall surface is prevented; the ore pulp in the cylinder 1 circularly flows under the action of the booster pump 13 so as to enhance the mixing effect of the ore pulp;
f, after circulation for a plurality of times, the ore pulp is fully mixed and then is discharged by opening an ore pulp discharge port 3;
g later, the raw material pulp is continuously fed through a raw material port 10 and continuously discharged through an ore pulp discharge port 3.
Pure ore pulp mixing is carried out when the medicine adding port 12 is closed; the chemical adding port 12 is opened as required, so that the pure ore pulp can be stirred and mixed, and the chemicals can be added in proportion to be adsorbed on the surfaces of the mineral particles in the cylinder body 1, so that the surface properties of the mineral particles are improved.
When the slurry is mixed with air, the air is discharged through the exhaust hole 9.
Claims (8)
1. The utility model provides a whirl stirring mixing arrangement which characterized in that: the device comprises a cylinder body (1) and a booster pump (13), wherein the cylinder body (1) is a closed cylindrical cavity, a plurality of rows of convex blocks (2) are arranged in the middle of the inner wall surface of the cavity along the vertical direction, and the convex blocks (2) are utilized to change the flow field of ore pulp on the inner wall surface of the cavity, so that the ore pulp is prevented from swirling on the wall surface to effectively enhance the turbulent diffusion of the ore pulp on the wall surface; the top of the cylinder (1) is provided with an exhaust port (9), the bottom of the cylinder is provided with an ore pulp discharge port (3), a raw material port (10) is arranged above the side surface of the cylinder (1), and a circulating outlet (4) is arranged on the side surface below the cylinder; a cross-flow mixer is arranged in the middle of the inside of the barrel body (1), the cross-flow mixer is fixed in the center of the inside of the barrel body (1) through a plurality of fixing rods (11), the inlet of a booster pump (13) is connected with a circulating outlet (4) through a pipeline, the outlet of the booster pump is connected with the inlet of the cross-flow mixer through a pipeline, and a medicine feeding port (12) is arranged on the pipeline between the inlet of the booster pump (13) and the circulating outlet (4);
the cross-flow mixer comprises a lower inverted cone (5) and an upper inverted cone (7) which are concentrically arranged with a barrel (1), the lower inverted cone (5) and the upper inverted cone (7) are cone structures with upper and lower openings, the lower inverted cone (5) and the upper inverted cone (7) both comprise a large opening and a small opening, the large opening of the lower inverted cone (5) is upward, the large opening of the upper inverted cone (7) is downward, the large openings of the lower inverted cone (5) and the upper inverted cone (7) are oppositely arranged, a plurality of lower circulation inlet pipes (6) are uniformly arranged on the side wall of the lower inverted cone (5) in two opposite directions, a plurality of upper circulation inlet pipes (8) are uniformly arranged on the side wall of the upper inverted cone (7) in two opposite directions, the ends of the lower circulation inlet pipes (6) and the upper circulation inlet pipes (8) respectively penetrate through the barrel (1) and extend to the outside, and all the lower circulation inlet pipes (6) and the upper circulation inlet pipes (8) and the outlet of a booster pump (13) are communicated with the inlet Connecting;
the lower circulation inlet pipe (6) is tangent to the side wall surface of the lower inverted cone (5) and is arranged along the clockwise direction, the upper circulation inlet pipe (8) is tangent to the side wall surface of the upper inverted cone (7) and is arranged along the anticlockwise direction, and the number of the arranged pipes of the lower circulation inlet pipe (6) and the number of the arranged pipes of the upper circulation inlet pipe (8) are the same and are 2-4.
2. The vortex stirring mixing apparatus of claim 1, wherein: the diameter of the cylinder body (1) is D, and the height of the cylinder body (1) is 2D.
3. The vortex stirring mixing apparatus of claim 2, wherein: the diameter of the large opening of the lower inverted cone (5) and the upper inverted cone (7) is 0.6-0.8D, the height of the lower inverted cone (5) and the upper inverted cone (7) is 0.125D, the inverted cone angle is 64 degrees, and the distance between the lower inverted cone (5) and the upper inverted cone (7) is 1.1-1.3D.
4. The vortex stirring mixing apparatus of claim 1, wherein: the convex blocks (2) are distributed on the wall of the inner cavity of the barrel body (1) at the outer side of the cross-flow mixer in a centralized manner, the cone angle of the convex blocks (2) is 60 degrees, at least 4 rows are formed, the number of each row is 6, the convex blocks are uniformly distributed, and the arrangement modes of the convex blocks in adjacent rows are staggered.
5. The vortex stirring mixing apparatus of claim 2, wherein: the thickness of the convex block (2) is 0.05D.
6. A mixing method of a swirling mixing apparatus according to any one of claims 1 to 5, characterised by the steps of:
a, when the device is used for the first time, an ore pulp discharge port (3) is closed, raw ore pulp formed by mineral particles and water according to a proper proportion is added into a cylinder body (1) from a raw material port (10) to form primary ore pulp, and the primary ore pulp is filled in the cylinder body (1) and then is stopped to be added;
b, starting a booster pump (13) to pump the primary ore pulp out of the circulating outlet (4), pressurizing the primary ore pulp by the booster pump (13), and feeding the pressurized primary ore pulp into the barrel (1) from the lower circulating inlet pipe (6) and the upper circulating inlet pipe (8) respectively;
c, pressurized ore pulp of the lower circulating inlet pipe (6) enters the lower inverted cone (5) along the tangential direction, and then spirally moves upwards clockwise around the inner wall surface of the lower inverted cone (5) to drive the ore pulp at the lower part of the cylinder (1) to form clockwise shearing movement, so that shearing is enhanced;
d, pressurized ore pulp of the upper circulating inlet pipe (8) enters the upper inverted cone (7) tangentially, and spirally moves downwards anticlockwise around the inner wall surface of the upper inverted cone (7) under pressure, and forms anticlockwise shearing movement on the ore pulp at the upper part of the barrel (1) to enhance ore pulp shearing;
e, the ore pulp which is sheared and moves clockwise in the cylinder (1) collides with the ore pulp which moves downwards in a counterclockwise spiral mode in a swirling manner in the middle of the cylinder (1) to form cross flow mixing, meanwhile, the ore pulp which moves close to the wall surface in the cylinder (1) changes a flow field under the action of the convex blocks (2) in the cylinder (1), so that turbulent diffusion of the ore pulp on the wall surface is enhanced, and the whole rotation of the ore pulp on the wall surface is prevented; the ore pulp in the cylinder (1) circularly flows under the action of the booster pump (13) so as to enhance the mixing effect of the ore pulp;
f, after circulation for a plurality of times, the ore pulp is fully mixed and then is discharged by opening the ore pulp discharge port (3);
g later, the raw material pulp is continuously fed through a raw material port (10) and continuously discharged through an ore pulp discharge port (3).
7. The mixing method according to claim 6, characterized in that: pure ore pulp mixing is carried out when the medicine adding port (12) is closed; the medicine adding port (12) is opened, and the medicine is added in proportion to be adsorbed on the surface of the mineral particles in the cylinder body (1), so that the surface properties of the mineral particles are improved.
8. The mixing method according to claim 6, characterized in that: when the slurry is mixed with air, the air is discharged through the air outlet (9).
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CN109939840B (en) * | 2019-04-29 | 2023-10-24 | 中国矿业大学 | Forced turbulence mineralization reaction device and method |
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