CN108261981B - Continuous casting low-alkalinity tundish slag granulating device - Google Patents
Continuous casting low-alkalinity tundish slag granulating device Download PDFInfo
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- CN108261981B CN108261981B CN201810168262.7A CN201810168262A CN108261981B CN 108261981 B CN108261981 B CN 108261981B CN 201810168262 A CN201810168262 A CN 201810168262A CN 108261981 B CN108261981 B CN 108261981B
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2/00—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic
- B01J2/14—Processes or devices for granulating materials, e.g. fertilisers in general; Rendering particulate materials free flowing in general, e.g. making them hydrophobic in rotating dishes or pans
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Abstract
The invention belongs to the technical field of general methods or devices for granulating raw materials, and discloses a continuous casting low-alkalinity medium slag-containing granulating device, which comprises a frame, wherein a granulating disc and a transmission mechanism are arranged on the frame, a plurality of steel balls are arranged in the granulating disc, and a shell is also arranged on the frame; the shell is connected with a baffle cover in a sliding way, and a sliding material plate is hinged on the baffle cover; the air storage disc is provided with a partition board which divides the air storage disc into a limiting cavity and a moving cavity; the granulation disc is provided with a plurality of through holes, and also comprises a Y-shaped pipe and an air inlet box, and the air inlet box is communicated with an air inlet pump; the Y-shaped pipe comprises an intersection section, a first branch pipe and a second branch pipe; the first branch pipe is provided with a first air valve, the second branch pipe is provided with a second air valve, and the rack is provided with a first limit switch and a second limit switch. The invention solves the problems that the ball with larger particle size formed in the granulation process in the prior art needs to be taken out and scattered for re-granulation, which can cause long granulation period and low granulation efficiency.
Description
Technical Field
The invention belongs to the field of general methods or devices for granulating raw materials, and particularly relates to a granulating device for continuous casting low-alkalinity tundish slag.
Background
The tundish slag is a heat-insulating material used in the process of pouring molten steel, has the functions of adsorbing floating impurities, preventing secondary oxidation of the molten steel and preventing the molten steel from being polluted, is widely used in steel mills, and is particularly widely used in low-alkalinity tundish slag.
The tundish slag is usually in the form of granules with small particle size, and the production and processing mainly comprise the procedures of raw material crushing, granulation, drying, cooling and packaging. Wherein the granulating process is to uniformly mix the crushed raw materials and prepare the mixture into granules. The raw materials of the covering slag in the production are powdery materials, so a disc granulator with the characteristics of uniform granulation, high granulation rate, stable operation and the like is often used for granulation.
The existing disc granulator mainly comprises a rack, a transmission mechanism and a granulation disc, wherein the granulation disc is rotatably connected to the rack, the granulation disc is obliquely arranged, and the transmission mechanism is used for driving the granulation disc to rotate. When the device is used, raw materials are added from the high position of the granulation disc, the transmission mechanism drives the granulation disc to rotate, and the raw materials are gradually adhered to form a sphere in the rotating process of the granulation disc. The great spheroid of particle diameter can rotate along the outer wall of granulation disc under the effect of centrifugal force, and the qualified spheroid of particle diameter can be drawn close to the middle part of granulation disc, takes out the spheroid at middle part through the manual work again.
However, the above technical solutions still have the following technical problems: the spheres with large particle size formed in granulation need to be taken out and scattered, and then granulation is carried out, so that the granulation period is long and the time is wasted.
Disclosure of Invention
The invention aims to provide a granulating device for continuous casting low-alkalinity tundish slag, which solves the problems that in the prior art, spheres with larger particle sizes are required to be taken out and scattered for granulation again, so that the granulation period is long and the granulation efficiency is low.
In order to realize the aim, the invention provides the following technical scheme that the continuous casting low-alkalinity medium ladle slag granulating device comprises a rack, wherein a granulating disc and a transmission mechanism for driving the granulating disc to rotate are arranged on the rack, the granulating disc is obliquely arranged, a plurality of steel balls are arranged in the granulating disc, a semicircular shell is fixedly connected to the rack, and the inner wall of the shell is attached to the outer wall of the granulating disc; the shell is connected with a baffle cover in a sliding way, and a sliding material plate vertical to the baffle cover is hinged on the baffle cover; the bottom of the granulating disc is provided with a gas storage disc, the top of the gas storage disc is attached to the bottom of the granulating disc, the gas storage disc is provided with a partition plate which divides the gas storage disc into a limiting cavity and a moving cavity, and the moving cavity is positioned above the limiting cavity; the granulation disc is uniformly provided with a plurality of through holes, the through holes are inclined towards the center of the granulation disc from bottom to top, the through holes are communicated with the limiting cavity and the moving cavity, the granulation disc also comprises a Y-shaped pipe and an air inlet box, and the air inlet box is communicated with an air inlet pump; the Y-shaped pipe comprises an intersection section, a first branch pipe and a second branch pipe, the intersection section is communicated with the air inlet box, the first branch pipe is communicated with the limiting cavity, and the second branch pipe is communicated with the moving cavity; the first branch pipe is provided with a first air valve, the second branch pipe is provided with a second air valve, and a first limit switch for controlling the opening or closing of the first air valve and a second limit switch for controlling the opening or closing of the second air valve are arranged below the upper blocking cover of the frame.
The technical effect of the technical characteristics of the scheme is as follows:
the steel balls are used for scattering spheres with larger particle sizes generated in granulation and are granulated again. The shell is used for fixing the blocking cover, the blocking cover is connected with the shell in a sliding mode, the blocking cover can move up and down, and therefore the sliding material plate can move up and down. The baffle cover is used for limiting the steel ball, so that the steel ball is prevented from being separated from the granulating disc, and the sliding plate is used for realizing granulation completion and qualified discharge of tundish slag.
The blocking cover drives the sliding plate to move downwards, when one end of the sliding plate, which is far away from the blocking cover, is in contact with the granulating disc, the sliding plate stops moving, the other end of the sliding plate continues to move downwards under the action of the blocking cover, so that the sliding plate is inclined, the tundish slag ball body positioned in the middle of the granulating disc slides along the inclined sliding plate, and the discharge of the tundish slag ball body is realized.
The gas storage disc is used for storing gas and communicated with the through hole, so that the gas in the gas storage disc can flow out of the through hole. The baffle plate divides the gas storage disc into a limiting cavity at the lower part and a moving cavity at the upper part, when gas is stored in the limiting cavity, the through hole at the lower part of the gas storage disc is communicated with the limiting cavity, and the gas flows out from the through hole at the lower part. Because the through holes are obliquely arranged towards the middle part of the granulating disc, the gas can be blown along the middle part of the granulating disc and can blow the slag-filled spheres with qualified particle sizes upwards; when gaseous storage was in removing the intracavity, gaseous can blow down the qualified well package sediment spheroid of particle diameter, gives well package sediment spheroid a power that moves down for well package sediment spheroid slides along the sliding plate is quick, and the spheroidal quick ejection of compact of package sediment in the realization.
The air inlet pump is used for providing gas for the air inlet box, the air inlet box is used for storing the gas, and the Y-shaped pipe is used for guiding the gas in the air inlet box to the limiting cavity and the moving cavity. When the first air valve is opened, air in the air inlet box enters the limiting cavity through the first branch pipe; when the second air valve is opened, the air enters the moving cavity through the second branch pipe. When the blocking cover moves downwards, the first limit switch and the second limit switch are pressed downwards, so that the first limit switch controls the first air valve to be closed, and the second limit switch controls the second air valve to be opened.
The technical principle of the scheme is as follows:
the granulation disc rotates to granulate to form a middle package slag sphere, the middle package slag sphere with larger particle size rotates along the outer wall of the granulation disc, and the middle package slag sphere with qualified particle size and smaller particle size approaches to the middle of the granulation disc. When the qualified tundish slag spheres are stacked on the granulating disc, the blocking cover slides downwards, drives the sliding plate to move downwards and incline, and the qualified tundish slag spheres slide along the sliding plate under the action of gravity to realize discharging. Meanwhile, the cover plate moves downwards to extrude the second limit switch, and the second air valve is opened, so that air in the air inlet box enters the moving cavity through the second branch pipe, is blown out through the through hole in the upper part of the granulating disc, and blows the slag-contained ball downwards to push the slag-contained ball to move downwards.
The technical effect that this scheme can produce is:
1. according to the technical scheme, the plurality of steel balls are arranged on the granulating disc, so that the steel balls can rotate along with the granulating disc, and the tundish slag spheres with larger particle sizes can be attached to the outer wall to rotate when the granulating disc is granulated, so that the tundish slag spheres with larger particle sizes can be scattered in the moving process of the steel balls, and granulation is performed again; compared with the prior art that the medium ladle slag spheres with larger particle sizes need to be taken out and scattered and then put into a granulation disc for granulation, the method can save the time for taking out and scattering the unqualified medium ladle slag spheres, thereby improving the efficiency;
2. because the weight of the steel balls is large, the steel balls only move in a reciprocating manner at the lower part of the granulation disc, and the steel balls are separated from the granulation disc due to relative collision in the reciprocating movement process; according to the technical scheme, the blocking cover is arranged, so that the steel balls can be prevented from being separated from the granulating disc, and workers are prevented from being injured;
3. according to the technical scheme, the sliding plate is arranged, so that the blocking cover is in an inclined state in the moving process, the qualified tundish slag ball body can conveniently slide along the sliding plate, and the discharge of the tundish slag ball body can be realized; compared with the prior art, the qualified tundish slag ball does not need to be shoveled manually, so that workers are prevented from being injured;
4. according to the technical scheme, the Y-shaped pipe is arranged, the first air valve is arranged on the first branch pipe, and the second air valve is arranged on the second branch pipe, so that the air inlet box is intermittently communicated with the limiting cavity and the moving cavity, and therefore intermittent air outlet of the through holes in the upper part and the lower part of the granulating disc is realized;
5. when the gas is blown out from the through hole at the lower part, the qualified tundish slag sphere is blown upwards, and the unqualified tundish slag sphere moves to the bottom of the granulating disc under the gravity, so that the qualified tundish slag sphere is limited, and the qualified tundish slag sphere and the unqualified tundish slag sphere are prevented from being mixed;
6. when the gas is blown out from the through hole at the upper part, the qualified tundish slag ball is blown downwards, and a downward moving force is applied to the tundish slag ball, so that the tundish slag ball is discharged quickly;
7. meanwhile, when the slag ball is wrapped in the gas blowing process, the slag ball can be dried, so that the time for a subsequent drying process is shortened, and the production efficiency is improved.
The following are preferred schemes based on the above scheme:
the first preferred scheme is as follows: based on the basic scheme, the inclination angle between the granulating disc and the ground is 10-30 degrees.
Has the advantages that: set up the granulation disc into above-mentioned inclination, can avoid the package sediment spheroid that the too big inclination leads to of inclination directly to drop from the granulation disc, can avoid the package sediment spheroid that the undersize of inclination leads to again can not remove to granulation disc middle part.
The preferred scheme II is as follows: based on the first preferred scheme, the bottom of the granulating disc is provided with an annular limiting groove, and the outer diameter of the limiting groove is consistent with the inner diameter of the granulating disc.
Has the advantages that: the limiting groove can limit the steel ball, and the probability of separation of the steel ball from the granulating disc is reduced.
The preferable scheme is three: based on the second preferred scheme, the depth of the limiting groove is 1-2 cm.
Has the advantages that: the limiting function of movement can be achieved, and the tundish slag on the upper part can slide downwards.
The preferable scheme is four: based on the third preferred scheme, the through hole is positioned at the position 3-4cm away from the limiting groove of the granulating disc.
Has the advantages that: can limit the qualified tundish slag ball.
The preferable scheme is five: based on preferred scheme four, the top of shell is equipped with the horizontal pole, is equipped with on the horizontal pole and scrapes the flitch, and the lateral wall that scrapes the flitch pastes with the inner wall of granulation disc mutually.
Has the advantages that: the horizontal pole is used for the installation to scrape the flitch, scrapes the flitch and pastes mutually with the granulation disc, when the granulation disc rotates, scrapes the flitch and can scrape down the raw materials of adhesion on the granulation disc inner wall and carry out reuse.
Drawings
FIG. 1 is a front view of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an embodiment of the present invention;
fig. 3 is a top view of the pelletizing disk of fig. 1.
Detailed Description
The present invention will be described in further detail below by way of specific embodiments:
reference numerals in the drawings of the specification include: the device comprises a granulation disc 1, a limiting groove 11, a through hole 12, a steel ball 2, a shell 3, a blocking cover 4, a material sliding plate 5, a gas storage disc 6, a partition plate 61, a limiting cavity 62, a moving cavity 63, a Y-shaped pipe 7, an intersection section 71, a first branch pipe 72, a second branch pipe 73 and a cross rod 8.
As shown in figure 1, the continuous casting low-alkalinity medium ladle slag granulating device comprises a base and a rack arranged on the base, wherein a motor and a granulating disc 1 are arranged on the rack, the granulating disc 1 is obliquely arranged, and an included angle between the granulating disc 1 and the base is 15 degrees. Granulation disc 1 rotates with the frame to be connected, and the output shaft of motor is fixed in the middle part of granulation disc 1, and the output shaft of motor is perpendicular with granulation disc 1.
As shown in fig. 2, the bottom of the granulating disc 1 is provided with an annular limiting groove 11, the depth of the limiting groove 11 is one centimeter, the outer diameter of the limiting groove 11 is consistent with the inner diameter of the granulating disc 1, the granulating disc 1 is provided with a plurality of through holes 12 uniformly, the through holes 12 incline towards the middle part of the granulating disc 1, and the through holes 12 are positioned at a distance of three centimeters from the limiting groove 11; as shown in fig. 3, a plurality of steel balls 2 are provided in the stopper groove 11.
Still be equipped with in the frame and be the shell 3 of semicircle form, the inner wall of shell 3 pastes with the outer wall of 1 lower part of granulation disc mutually, is equipped with horizontal pole 8 between the both ends about shell 3, and horizontal pole 8 is located 1 tops of granulation disc, and both ends all are equipped with about horizontal pole 8 and scrape the flitch, and the lateral wall of scraping the flitch pastes with the inner wall of granulation disc 1 mutually.
The shell 3 is further connected with a blocking cover 4 in a sliding mode, the top end of the blocking cover 4 is hinged to a sliding plate 5, the sliding plate 5 is parallel to the granulating disc 1, and the sliding plate 5 is perpendicular to the blocking cover 4. The frame is also provided with a gas storage disc 6, the top of the gas storage disc 6 is attached to the bottom of the granulation disc 1, a partition plate 61 is transversely arranged in the gas storage disc 6, and the partition plate 61 divides the gas storage disc 6 into a lower limiting cavity 62 and an upper moving cavity 63.
The base is provided with an air inlet box, an air inlet pump is arranged on the air inlet box, the air inlet box further comprises a Y-shaped pipe 7, the Y-shaped pipe 7 comprises an intersection section 71, a first branch pipe 72 and a second branch pipe 73, the intersection section 71 is communicated with the air inlet box, the first branch pipe 72 and the second branch pipe 73 are both connected to the air storage disc 6, the first branch pipe 72 is communicated with the limiting cavity 62, and the second branch pipe 73 is communicated with the moving cavity 63. The first branch pipe 72 is provided with a first air valve, the second branch pipe 73 is provided with a second air valve, and a first limit switch for controlling the opening or closing of the first air valve and a second limit switch for controlling the opening or closing of the second air valve are arranged below the blocking cover 4 on the machine frame.
When using this embodiment, starter motor, motor drive granulation disc 1 rotates, drops into the raw materials to granulation disc 1 in again, and the raw materials rotates along with granulation disc 1, and the pivoted in-process, raw materials adhesion stack are the spheroid to rotate along the inner wall of granulation disc 1 under the effect of centrifugal force.
When the granulated tundish slag balls move to the top of the granulating disc 1, the balls slide downwards along the inclined granulating disc 1 under the action of gravity. At the moment, the first air valve is opened, and the air in the air inlet box enters the limiting cavity 62 through the first branch pipe 72 and is blown out through the through hole 12; because the through holes 12 are inclined towards the middle part of the granulating disc 1, the gas is blown out upwards, so that the slag-coated balls on the granulating disc 1 are blown upwards to limit the slag-coated balls and avoid sliding downwards. The unqualified tundish slag ball with large particle size has large quality, and the upward blowing gas is not enough to limit the unqualified tundish slag ball, so the tundish slag ball with large particle size can move downwards to the bottom of the granulating disc 1, and is scattered by the movement of the steel balls 2 in the granulating disc 1 to be granulated again.
When the middle tundish slag ball body of the granulating disc 1 is accumulated more, the blocking cover 4 slides downwards, the blocking cover 4 drives the sliding plate 5 to slide downwards, the right end of the sliding plate 5 stops moving downwards after being abutted against the granulating disc 1, and the left end of the sliding plate 5 continues to move downwards along with the blocking cover 4, so that the left end of the sliding plate 5 inclines downwards. The blocking cover 4 extrudes the first limit switch and the second limit switch in the downward moving process, so that the first air valve is closed, the second air valve is opened, and therefore air in the air inlet box enters the moving cavity 63 through the second branch pipe 73 and is blown out through the through hole 12 in the upper part of the granulating disc 1 and blows a slag-containing ball downwards, so that the slag-containing ball slides downwards along the inclined baffle and is collected.
It will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention, which should not be construed as affecting the effect of the invention and its practical application.
Claims (5)
1. Package sediment prilling granulator in continuous casting low basicity, including the frame, be equipped with granulation disc and drive granulation disc pivoted drive mechanism in the frame, granulation disc slope sets up its characterized in that: a plurality of steel balls are arranged in the granulating disc, a semicircular shell is fixedly connected to the rack, and the inner wall of the shell is attached to the outer wall of the granulating disc; the shell is connected with a baffle cover in a sliding way, and a sliding material plate vertical to the baffle cover is hinged on the baffle cover; the bottom of the granulating disc is provided with a gas storage disc, the top of the gas storage disc is attached to the bottom of the granulating disc, the gas storage disc is provided with a partition plate which divides the gas storage disc into a limiting cavity and a moving cavity, and the moving cavity is positioned above the limiting cavity; the granulation disc is uniformly provided with a plurality of through holes, the through holes are inclined towards the center of the granulation disc from bottom to top, the through holes are communicated with the limiting cavity and the moving cavity, the granulation disc also comprises a Y-shaped pipe and an air inlet box, and the air inlet box is communicated with an air inlet pump; the Y-shaped pipe comprises an intersection section, a first branch pipe and a second branch pipe, the intersection section is communicated with the air inlet box, the first branch pipe is communicated with the limiting cavity, and the second branch pipe is communicated with the moving cavity; a first air valve is arranged on the first branch pipe, a second air valve is arranged on the second branch pipe, and a first limit switch for controlling the first air valve to be opened or closed and a second limit switch for controlling the second air valve to be opened or closed are arranged below the upper blocking cover of the frame; the top of shell is equipped with the horizontal pole, is equipped with on the horizontal pole and scrapes the flitch, scrapes the lateral wall of flitch and pastes mutually with the inner wall of granulation disc.
2. The continuous casting low-alkalinity tundish slag granulating device according to claim 1, characterized in that: the angle of inclination between the granulation disc and the ground is 10-30 degrees.
3. The continuous casting low-alkalinity tundish slag granulating device according to claim 2, characterized in that: the bottom of the granulation disc is provided with an annular limiting groove, and the outer diameter of the limiting groove is consistent with the inner diameter of the granulation disc.
4. The continuous casting low-alkalinity tundish slag granulating device according to claim 3, characterized in that: the depth of the limiting groove is 1-2 cm.
5. The continuous casting low-alkalinity tundish slag granulating device according to claim 4, characterized in that: the through hole is positioned at the position 3-4cm away from the limiting groove of the granulation disc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168262.7A CN108261981B (en) | 2018-02-28 | 2018-02-28 | Continuous casting low-alkalinity tundish slag granulating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810168262.7A CN108261981B (en) | 2018-02-28 | 2018-02-28 | Continuous casting low-alkalinity tundish slag granulating device |
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| Publication Number | Publication Date |
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| CN108261981A CN108261981A (en) | 2018-07-10 |
| CN108261981B true CN108261981B (en) | 2020-04-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810168262.7A Active CN108261981B (en) | 2018-02-28 | 2018-02-28 | Continuous casting low-alkalinity tundish slag granulating device |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU202127B (en) * | 1988-06-08 | 1991-02-28 | Mta Mueszaki Kemiai Kutato Int | Device for producing granules by rolling-layer technology |
| CN2376994Y (en) * | 1998-08-18 | 2000-05-10 | 高琦 | Air drying disk granulator |
| CN2657776Y (en) * | 2003-09-30 | 2004-11-24 | 黄兴中 | Disk-type breaker |
| CN104028169A (en) * | 2014-06-30 | 2014-09-10 | 广西大学 | Closed type disk grain making machine |
| CN203935823U (en) * | 2014-07-02 | 2014-11-12 | 安徽飞天农用生物科技股份有限公司 | A kind of organic fertilizer production prilling granulator |
| CN206560847U (en) * | 2017-02-20 | 2017-10-17 | 上海森松制药设备工程有限公司 | Top spray granulation device and fluidised bed granulator |
-
2018
- 2018-02-28 CN CN201810168262.7A patent/CN108261981B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| HU202127B (en) * | 1988-06-08 | 1991-02-28 | Mta Mueszaki Kemiai Kutato Int | Device for producing granules by rolling-layer technology |
| CN2376994Y (en) * | 1998-08-18 | 2000-05-10 | 高琦 | Air drying disk granulator |
| CN2657776Y (en) * | 2003-09-30 | 2004-11-24 | 黄兴中 | Disk-type breaker |
| CN104028169A (en) * | 2014-06-30 | 2014-09-10 | 广西大学 | Closed type disk grain making machine |
| CN203935823U (en) * | 2014-07-02 | 2014-11-12 | 安徽飞天农用生物科技股份有限公司 | A kind of organic fertilizer production prilling granulator |
| CN206560847U (en) * | 2017-02-20 | 2017-10-17 | 上海森松制药设备工程有限公司 | Top spray granulation device and fluidised bed granulator |
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| CN108261981A (en) | 2018-07-10 |
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