CN215939884U - Granulating device for molten material - Google Patents
Granulating device for molten material Download PDFInfo
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- CN215939884U CN215939884U CN202023331725.9U CN202023331725U CN215939884U CN 215939884 U CN215939884 U CN 215939884U CN 202023331725 U CN202023331725 U CN 202023331725U CN 215939884 U CN215939884 U CN 215939884U
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- molten material
- cone structure
- blast
- turntable
- granulating
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- 239000012768 molten material Substances 0.000 title claims abstract description 56
- 239000000463 material Substances 0.000 claims abstract description 20
- 238000005469 granulation Methods 0.000 claims description 22
- 230000003179 granulation Effects 0.000 claims description 21
- 238000001816 cooling Methods 0.000 claims description 7
- 238000009434 installation Methods 0.000 claims description 3
- 239000002245 particle Substances 0.000 abstract description 28
- 238000009825 accumulation Methods 0.000 abstract description 4
- 239000008187 granular material Substances 0.000 description 16
- 239000007788 liquid Substances 0.000 description 8
- 239000002893 slag Substances 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 229910000863 Ferronickel Inorganic materials 0.000 description 6
- 230000005484 gravity Effects 0.000 description 6
- 238000007599 discharging Methods 0.000 description 2
- 239000011361 granulated particle Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000012798 spherical particle Substances 0.000 description 1
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Abstract
The utility model provides a granulating device for molten materials, which comprises a granulating chamber; the granulating chamber comprises a tip cone structure, a middle ring section connected with the bottom end of the tip cone structure and a lower cone section connected with the bottom end of the middle ring section; an air outlet is arranged at the top end of the tip cone structure, and a material guide pipe is arranged inside the air outlet; at least one group of blast ports is arranged on the outer side wall of the middle ring section, and each group of blast ports at least comprises two blast ports which are symmetrically arranged; a rotating disc is arranged inside the middle ring section, and the center of the rotating disc is opposite to the bottom of the material guide pipe; the lower cone section comprises a lower cone structure arranged on the periphery of the lower part of the turntable, and a discharge hole is formed in the bottom of the lower cone structure. The utility model can solve the problem that the prior granulating equipment is huge; and particles with larger particle size or large blocks are easy to generate, which causes the problems of product accumulation, remelting and the like.
Description
Technical Field
The utility model relates to the technical field of material preparation, in particular to a granulating device for a molten material.
Background
The method for granulating the molten material has various methods, the rotating disc method in the centrifugal granulating method has good granulating effect and high application value, the molten material can be granulated into liquid particles with uniform particles under the action of centrifugal force, and the uniform solid particles can be successfully obtained by matching with a proper cooling method.
However, in the current rotating disk method, the diameter of the granulating chamber is large due to the high speed of the liquid granules thrown out by the rotating disk, so that the granulating equipment is large; if the baffle (or the impact plate) is arranged to reduce the size of the granulating chamber, certain adhesion can be caused to influence the granulating effect; the high-pressure air granulation has high energy consumption and noise pollution problem; the residual heat in the particles solidified on the surface in the particle collection stage promotes the surface of the particles to be bonded, agglomerated or remelted, and particles with larger particle size or large blocks are generated, so that the phenomenon of product accumulation and remelting is caused.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, the present invention aims to provide a granulation apparatus for molten materials, which can solve the problem that the existing rotating disk granulation method has large equipment size due to the large diameter of the granulation chamber caused by the high speed of the liquid granules thrown out by the rotating disk; and residual heat in the particles promotes the surface of the particles to be bonded, agglomerated or remelted, so that particles with larger particle size or large blocks are generated, and the problems of product accumulation, remelting and the like are caused.
The utility model provides a granulating device for molten materials, which comprises a granulating chamber; the granulation chamber comprises a top cone structure, a middle ring section connected with the bottom end of the top cone structure and a lower cone section connected with the bottom end of the middle ring section; an air outlet is formed in the top end of the tip cone structure, and a material guide pipe is arranged inside the air outlet; at least one group of blast ports is arranged on the outer side wall of the middle ring section, wherein each group of blast ports at least comprises two blast ports which are symmetrically arranged; a turntable is arranged inside the middle ring section, and the center of the turntable is opposite to the bottom of the material guide pipe; the lower cone section comprises a lower cone structure arranged on the periphery below the turntable, and a discharge hole is formed in the bottom of the lower cone structure.
In addition, preferably, the air outlet is arranged at the center of the top end of the tip cone structure; the material guide pipe is arranged in the middle of the air outlet.
In addition, it is preferable that a cooling device is provided at a bottom end of the turntable.
In addition, preferably, a power device is connected to the bottom of the rotating disc.
Preferably, the rotation speed of the turntable is 800rpm to 1500 rpm.
In addition, it is preferable that the total amount of the blast from the blast port is 1X104m3/h～1X105m3H; the wind speed entering from each blast port is 20 m/s-50 m/s.
In addition, the preferred scheme is that the included angle between the wind direction of the wind blown from the blast nozzle and the moving direction of the materials thrown from the rotary disc is 30-60 degrees.
In addition, the vertex angle of the tip cone structure is preferably 160 ° to 170 °.
In addition, it is preferable that the apex angle of the lower cone structure is 90 °.
According to the technical scheme, the molten material is guided into the granulating chamber through the material guide pipe, the molten material falls into the rotary table, the rotary table runs at a high speed, so that the molten material falling into the center of the rotary table flies out of the rotary table along the edge of the rotary table in the direction similar to the rotating tangential line of the rotary table under the action of centrifugal force, fine molten drops are formed under the comprehensive action of inertia force, surface tension, gravity and a cyclone field, the fine molten drops are cooled and solidified into particles under the action of wind entering from a blast opening, the interior of the particles is not completely solidified when reaching the inner wall of the middle ring section, the particles are quickly cooled downwards along the wall surface under the action of the cyclone field, and finally, all solidified particles are formed and are discharged from a discharge opening, and the granulated molten material is obtained. The granulating device for the molten material has simple structure and small volume; the utility model can thoroughly eliminate the problem that liquid drops thrown out of the turntable are bonded with the inner wall of the granulating chamber, thereby improving the granulating quality; the hot granules do not accumulate in the granulation chamber and the product granules are uniform.
Drawings
Other objects and results of the present invention will become more apparent and more readily appreciated as the same becomes better understood by reference to the following description taken in conjunction with the accompanying drawings. In the drawings:
fig. 1 is a schematic structural view of a granulating apparatus of molten material according to an embodiment of the present invention;
fig. 2 is a schematic top view of a granulating apparatus for molten material according to an embodiment of the present invention;
fig. 3 is a flow chart of granulating the molten material using the granulating apparatus for the molten material according to the embodiment of the present invention.
In the attached figure, 1-granulation chamber, 11-tip cone structure, 111-exhaust port, 112-guide pipe, 12-middle ring segment, 121-blast port, 13-lower cone structure, 131-discharge port and 2-rotary table.
The same reference numbers in all figures indicate similar or corresponding features or functions.
Detailed Description
In the following description, for purposes of explanation, numerous specific details are set forth in order to provide a thorough understanding of one or more embodiments. It may be evident, however, that such embodiment(s) may be practiced without these specific details.
Aiming at the problem that in the existing turntable granulation method, the liquid particles thrown out by a turntable have high speed, so that the diameter of a granulation chamber is large, and equipment is huge; and residual heat in the granules promotes the surfaces of the granules to be bonded, agglomerated or remelted to generate granules with larger grain diameters or large blocks, which causes the phenomena of product accumulation, remelting and the like.
Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In order to explain the granulation apparatus of molten material provided by the present invention, fig. 1 shows the structure of the granulation apparatus of molten material according to an embodiment of the present invention; fig. 2 shows a top view of a granulating apparatus of molten material according to an embodiment of the present invention.
As shown in fig. 1 and 2 together, the present invention provides a granulation apparatus for molten material, comprising a granulation chamber 1; wherein, the granulation chamber 1 comprises a tip cone structure 11, an intermediate ring section 12 connected with the bottom end of the tip cone structure 11 and a lower cone section connected with the bottom end of the intermediate ring section 12; an air outlet 111 is arranged at the top end of the tip cone structure 11, and a material guide pipe 112 is arranged inside the air outlet 111; at least one group of blast holes 121 are arranged on the outer side wall of the middle section 12, wherein each group of blast holes 121 at least comprises two blast holes 121 symmetrically arranged; a rotating disc 2 is arranged inside the middle ring section 12, and the center of the rotating disc 2 is opposite to the bottom of the material guide pipe 112; the lower cone section comprises a lower cone structure 13 arranged on the periphery of the lower part of the rotary disc, and a discharge hole 131 is formed in the bottom of the lower cone structure 13.
The number of the blast ports 121 is mainly determined by considering an installation space, formation of a cyclone field, cost, and the like, and may be set according to actual needs, which is not particularly limited herein.
The molten material is guided into the granulating chamber 1 through the material guide pipe 112, the molten material falls into the rotary table 2, the rotary table 2 runs at a high speed, the molten material falling into the center of the rotary table 2 flies out of the rotary table 2 along the edge of the rotary table 2 in a direction similar to the rotation tangent direction of the rotary table 2 under the action of centrifugal force, fine molten drops are formed under the comprehensive action of inertia force, surface tension, gravity and a cyclone field, the fine molten drops are cooled and solidified into particles under the action of the cyclone field formed by wind entering from the blast opening 121, the interior of the particles is not completely solidified when reaching the inner wall of the middle ring section, the particles are rapidly cooled down along the wall surface in a spiral mode under the action of the cyclone field, and finally, all solidified particles are formed and are discharged from the discharge opening 131, and the granulated molten material is obtained. The granulating device for the molten material has simple structure and small volume; the utility model can thoroughly eliminate the problem that liquid drops thrown out of the turntable are bonded with the inner wall of the granulating chamber, thereby improving the granulating quality; the hot granules do not accumulate in the granulation chamber and the product granules are uniform.
As a preferable scheme of the present invention, the air outlet 111 is arranged at the center of the top end of the tip cone structure 11; the guide duct 112 is provided at the middle of the exhaust opening 111. Through the structural design, the integral structure is more symmetrical, and the space of the molten material under the action of the cyclone field is more reasonable.
As a preferred embodiment of the present invention, a cooling device is provided at the bottom end of the turntable 2. The cooling device is provided to cool the turntable 2, and further cool the molten material falling into the center of the turntable 2.
As a preferable embodiment of the present invention, a power unit is connected to the bottom of the turntable 2. The power for high-speed operation is provided to the rotary table 2 by a power device, wherein the power device is preferably a motor.
In a preferred embodiment of the present invention, the rotation speed of the turntable 2 is 800rpm to 1500 rpm. The rotating disk 2 rotates at a high speed to generate a sufficient centrifugal force on the molten material, so that the molten material flies out in a tangential direction of the rotation of the rotating disk 2.
As a preferable aspect of the present invention, the total amount of the blast from the blast port 121 is 1X104m3/h～1X105m3H; the wind speed entering from each tuyere 121 is 20m/s to 50 m/s. The cyclone field can be formed in the middle ring segment 12 only when a sufficient air volume is achieved and the wind speed entering each tuyere 121 meets certain requirements.
As a preferred scheme of the utility model, the included angle between the wind direction of the wind blown in by the blast port 121 and the moving direction of the materials thrown out by the rotary disc 2 is 30-60 degrees. This is a preferred angle, and by the above-mentioned angle design, the velocity direction of the granulated particles can be made to approach the wall surface tangential direction when the granulated particles reach the inner side wall of the middle ring segment 12 under the action of the cyclone field.
In a preferred embodiment of the present invention, the apex angle of the tip cone structure 11 is 160 ° to 170 °.
As a preferred embodiment of the present invention, the apex angle of the lower cone structure 13 is 90 °. Facilitating the discharge of the particles.
Fig. 3 is a flow of granulating a molten material using a molten material granulating apparatus according to an embodiment of the present invention.
As shown in fig. 3, the granulation of the molten material using the granulation apparatus for molten material provided by the present invention comprises the steps of:
s1, guiding the molten material into the granulating chamber through the material guide pipe, and enabling the molten material to fall into the center of the turntable;
s2, under the action of centrifugal force, the molten material falling into the center of the rotating disc flies out of the rotating disc along the edge of the rotating disc in the direction similar to the rotating tangential line of the rotating disc;
s3, forming fine molten drops by the molten material flying out of the turntable under the comprehensive action of inertia force, surface tension, gravity and a cyclone field;
s4, cooling the fine molten drops by a cyclone field formed by wind entering from the blast nozzle, and solidifying the fine molten drops into particles;
and S5, discharging the granules from the discharge hole to obtain the granulated molten material.
To further illustrate the practical application of the utility model, a preferred embodiment of the utility model is as follows:
example 1
S1, introducing the 1400 ℃ ferronickel slag into a granulating chamber through a material guide pipe at the treatment capacity of 30t/h, and enabling the ferronickel slag to fall into the center of a turntable; wherein the diameter of the turntable is 450mm, and the rotating speed of the turntable is 800-1500 rpm; the included angle between the wind direction of the wind blown from the blast nozzle and the motion direction of the material thrown out by the turntable is 45 DEG
S2, under the action of centrifugal force, the ferronickel slag falling into the center of the rotary table flies out of the rotary table along the edge of the rotary table in a direction similar to the rotating tangential direction of the rotary table;
s3, forming fine molten drops by the molten material flying out of the turntable under the comprehensive action of inertia force, surface tension, gravity and a cyclone field;
s4, cooling the fine molten drops by a cyclone field formed by wind entering from the blast nozzle, and solidifying the fine molten drops into slag particles; wherein, the inner diameter of the middle ring section is 6m, 20 blast ports are arranged, and the blast volume is 30000m3/h～45000m3H; the middle ring section is 800mm high, and the corresponding liquid drop emission angle of the ferronickel slag is 16 degrees;
and S5, discharging the slag particles from a discharge hole to obtain the granulated ferronickel slag, wherein the discharge hole is an annular discharge hole, the diameter of an outer ring is 4600mm, and the diameter of an inner ring is 3000 mm.
The molten ferronickel slag is thrown out by the rotary table and forms uniform spherical particles with the average particle size of 0.5mm under the comprehensive action of inertia force, surface tension, gravity and a cyclone field.
According to the embodiment, the molten material is guided into the granulating chamber through the material guide pipe, the molten material falls into the rotary table, the rotary table runs at a high speed, so that the molten material falling into the center of the rotary table flies out of the rotary table along the edge of the rotary table in the direction similar to the rotation tangent of the rotary table under the action of centrifugal force, fine droplets are formed under the comprehensive action of inertia force, surface tension, gravity and a cyclone field formed by wind entering from a blast opening, the fine droplets are cooled and solidified into granules under the action of the cyclone field formed by the wind entering from the blast opening, the granules are not completely solidified when reaching the inner wall of the middle ring section, and the granules are rapidly cooled down along the wall surface under the action of the cyclone field to finally form all solidified granules which are discharged from the discharge opening, and the granulated molten material is obtained. The granulating device for the molten material has simple structure and small volume; the utility model can thoroughly eliminate the problem that liquid drops thrown out of the turntable are bonded with the inner wall of the granulating chamber, thereby improving the granulating quality; the hot granules do not accumulate in the granulation chamber and the product granules are uniform.
The proposed granulation installation of molten material according to the utility model is described above by way of example with reference to the accompanying drawings. However, it will be appreciated by those skilled in the art that various modifications may be made to the molten material granulating apparatus of the present invention as set forth above without departing from the spirit of the utility model. Therefore, the scope of the present invention should be determined by the contents of the appended claims.
Claims (9)
1. A granulation installation of molten material, characterized by comprising a granulation chamber; wherein,
the granulation chamber comprises a tip cone structure, a middle ring section connected with the bottom end of the tip cone structure and a lower cone section connected with the bottom end of the middle ring section;
an air outlet is formed in the top end of the tip cone structure, and a material guide pipe is arranged inside the air outlet;
at least one group of blast ports is arranged on the outer side wall of the middle ring section, wherein each group of blast ports at least comprises two blast ports which are symmetrically arranged; a turntable is arranged inside the middle ring section, and the center of the turntable is opposite to the bottom of the material guide pipe;
the lower cone section comprises a lower cone structure arranged on the periphery below the turntable, and a discharge hole is formed in the bottom of the lower cone structure.
2. A granulating apparatus for molten material as claimed in claim 1,
the air outlet is arranged in the center of the top end of the tip cone structure;
the material guide pipe is arranged in the middle of the air outlet.
3. A granulating apparatus for molten material as claimed in claim 1,
and a cooling device is arranged at the bottom end of the rotary disc.
4. A granulating apparatus for molten material as claimed in claim 1,
the bottom of the turntable is connected with a power device.
5. A granulating apparatus for molten material as claimed in claim 1,
the rotating speed of the rotating disc is 800 rpm-1500 rpm.
6. A granulating apparatus for molten material as claimed in claim 1,
the sum of the amount of the blast from all the blast ports is 1X104m3/h～1X105m3/h；
The wind speed entering from each blast port is 20 m/s-50 m/s.
7. A granulating apparatus for molten material as claimed in claim 1,
the included angle between the wind direction of the wind blown from the blast nozzle and the motion direction of the material thrown from the turntable is 30-60 degrees.
8. A granulating apparatus for molten material as claimed in claim 1,
the cone apex angle of the tip cone structure is 160-170 degrees.
9. A granulating apparatus for molten material as claimed in claim 1,
the cone apex angle of the lower cone structure is 90 degrees.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023331725.9U CN215939884U (en) | 2020-12-30 | 2020-12-30 | Granulating device for molten material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023331725.9U CN215939884U (en) | 2020-12-30 | 2020-12-30 | Granulating device for molten material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215939884U true CN215939884U (en) | 2022-03-04 |
Family
ID=80505336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023331725.9U Active CN215939884U (en) | 2020-12-30 | 2020-12-30 | Granulating device for molten material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215939884U (en) |
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2020
- 2020-12-30 CN CN202023331725.9U patent/CN215939884U/en active Active
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