JP2004138276A - Granulated slag manufacturing device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a granulated slag manufacturing device improving a yield rate of product slag by collecting the granulated molten slag into a rotating cylinder by flying the molten slag by rotating bodies, and improving the workability in maintenance of the rotating body. <P>SOLUTION: In this granulated slag manufacturing device 10 comprising the rotating bodies 13, 14 with which the supplied molten slag 11 is collided to be flown, a mist nozzle 16a generating water mist for cooling the granulated molten or incompletely molten slag 15 flown from the rotating bodies 13, 14 and granulated by its surface tension, and the rotating cylinder 16 receiving the granulated slag cooled by the water mist, the rotating bodies 13, 14 can be mounted in the rotating cylinder 16, and the slag 15a dropped on lower parts and rear parts of the rotating bodies 13, 14 is collected by the rotating cylinder 16. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
TECHNICAL FIELD The present invention relates to a granular slag manufacturing apparatus in which molten slag generated in the course of metal refining is scattered by a rotating body into particles in a rotating cylinder and directly cooled to produce granular slag.
[0002]
[Prior art]
Conventionally, for example, as an apparatus for manufacturing granular slag for granulating molten steel slag which is an example of molten slag generated in a process of refining molten steel in a steel mill at an ironworks, the apparatus described in Patent Document 1 shown in FIG. Are known. The granular slag manufacturing apparatus 70 includes a steel rotary kiln-type rotary cylinder provided with four support rollers 72 and a drive mechanism (not shown) for the support rollers 72 at the front, rear, left and right on a common bed 71. The body 73 and the rotating cylindrical body 73 inclined downward by a slight angle with respect to the horizontal toward the front side are disposed near the opened rear end of the rotating cylindrical body 73, and are provided on the common bed 71 via the mounting base 77. And two-stage rotating bodies 74 and 75 and a driving mechanism 76 for the rotating bodies 74 and 75. The driving mechanism 76 includes a motor 78 provided on the common bed 71 via a mounting bracket 77a, and a sprocket wheel between the motor 78 and the rotating body 74 and between the rotating body 74 and the rotating body 75 via sprocket wheels. And endless chains 79 and 80 provided.
[0003]
As shown in FIG. 6, when producing granular slag, molten steel slag 83 in slag pot 82 is dropped onto rotating rotating body 74 via chute 81. As shown in the figure, a part of the molten steel slag 83 is blown off by the rotating body 74 by the action of the blades attached to the outer peripheral surface of the rotating body 74 and the centrifugal force, and is spheroidized by the surface tension to be in a molten or semi-molten state. Fly as slug 84. The remainder of the molten steel slag 83 flipped off by the rotator 74 reaches the rotator 75, is once again flipped off by the rotator 75, becomes spherical by surface tension, and flies as a molten or semi-molten slag 84. During the flight, the slag 84 is rapidly cooled by water mist and ventilation vented from a number of mist nozzles (not shown) provided in the rotating cylindrical body 73 during the flight, and then falls and becomes a falling slag to form the rotating cylindrical body 73. It is conveyed through the bottom and is discharged to the outside through a discharge port. Reference numeral 85 in FIG. 6 denotes a scattering prevention cover provided at the rear end of the rotating cylinder 73 and covering the rotating body 74.
In order to stably produce granular slag, an appropriate amount of molten steel slag 83 is fed to the rotating body 74, and the molten steel slag 83 is made to fly in the rotating cylindrical body 73 by the rotating bodies 74 and 75 to be granulated. In addition, it is necessary to rapidly cool the granulated slag uniformly.
[0004]
[Patent Document 1]
JP-A-64-52636
[0005]
[Problems to be solved by the invention]
However, the conventional granular slag manufacturing apparatus 70 has the following problems to be solved.
The temperature of the blades attached to the outer peripheral surfaces of the rotating bodies 74 and 75 increases as the contact time with the molten steel slag 83 increases, and the adhesion of the molten steel slag 83 proceeds to the blades. And the amount of slag that does not fly increases. Here, the rotating body 75 is arranged inside the rotating cylindrical body 73, but since the rotating body 74 is arranged outside the rotating cylindrical body 73, that is, below the scattering prevention cover 85, the rotating bodies 74, 75 A part of the molten steel slag 83 that did not fly due to the falling was dropped below and behind the rotating body 74 to become a deposited slag 86, and the deposited slag 86 was discarded. In addition, a part of the granulated molten or semi-molten slag 84 fly by the rotating bodies 74 and 75 adheres to the scattering prevention cover 85, and after fusing and growing, falls and accumulates. Had become part. Therefore, there is a problem that the yield of granulated product slag is reduced due to the increase of the deposited slag 86.
Further, since the rotating bodies 74 and 75 are fixed to the rotating cylindrical body 73, workability is poor during maintenance work of the rotating bodies 74 and 75.
The present invention has been made in view of such circumstances, and melted or semi-molten slag that has been fly by a rotating body and granulated by its own surface tension is cooled by a water mist into a rotating cylindrical body. An object of the present invention is to provide a granular slag manufacturing apparatus in which the yield of product slag can be improved by collecting the slag, and the operability of maintenance of the rotating body is improved.
[0006]
[Means for Solving the Problems]
According to the first aspect of the present invention, there is provided a granular slag manufacturing apparatus according to a first aspect of the present invention, which includes a rotating body that collides and flies a supplied molten slag and a molten or semi-molten body that flies from the rotating body and is granulated by its surface tension. In a granular slag manufacturing apparatus including a mist nozzle that generates a water mist for cooling the slag in a state, and a rotating cylinder that receives the granular slag cooled by the water mist, the rotating body can be arranged in the rotating cylinder. Then, the falling slag that falls below and behind the rotating body is collected by the rotating cylindrical body. Thus, the falling slag that falls below and behind the rotating body can be collected in the rotating cylinder without using separate collecting means.
[0007]
In the apparatus for manufacturing granular slag according to the first invention, the rotating body is provided on a fixed mounting base, the rotating cylindrical body is mounted on a traveling vehicle, and an arrangement position of the rotating body is adjusted with respect to the rotating cylindrical body. You can also. Thereby, maintenance of the rotating body can be easily performed by adjusting the arrangement of the rotating body with respect to the rotating cylindrical body.
In the apparatus for producing granular slag according to the first invention, the rotating body and the rotating cylinder are fixedly installed, and a repair opening / closing portion for repairing the rotating body may be provided in a part of the rotating cylinder corresponding to the installation position of the rotating body. it can. Thus, while the rotating cylindrical body is fixed, the repair opening / closing part of the rotating body provided in a part of the rotating cylindrical body is opened and closed, so that maintenance of the rotating body and production of granular slag can be performed.
[0008]
According to the second aspect of the present invention, there is provided a granular slag manufacturing apparatus according to a second aspect of the present invention, which includes a rotating body that collides and flies a supplied molten slag and a molten or semi-molten body that flies from the rotating body and is granulated by its surface tension. In a granular slag manufacturing apparatus including a mist nozzle that generates a water mist for cooling the slag in a state, and a rotating cylinder that receives the granular slag cooled by the water mist, a part or all of the rotating body is outside the rotating cylinder. , A scattering prevention cover that covers the rotating body is provided, and a collecting means that guides the falling slag falling below and behind the rotating body into the rotating cylinder is further provided. Thereby, even if a part or the whole of the rotating body is disposed outside the rotating cylinder, the falling slag falling below and behind the rotating body can be collected in the rotating cylinder by the collecting means.
[0009]
In the apparatus for manufacturing granular slag according to the second invention, the recovery means may be a vibrating conveyor. Thereby, the collecting means can be made compact.
In the apparatus for manufacturing granular slag according to the second invention, the falling slag that has fallen into the collecting means can be caused to flow down by water pressure. Thereby, collection of the falling slag can be promoted.
In the apparatus for producing granular slag according to the first and second aspects of the present invention, the rotating cylindrical body may be configured to be inclined downward along the slag discharge direction. Thereby, the falling slag is conveyed to the discharge side of the rotating cylindrical body while repeating vertical movement.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention.
FIG. 1 is a front view of a granular slag manufacturing apparatus according to a first embodiment of the present invention, FIG. 2 is a side sectional view of the granular slag manufacturing apparatus, and FIG. 3 is a second embodiment of the present invention. FIG. 4 is a front sectional view of the granular slag manufacturing apparatus according to the embodiment, FIG. 4 is a side sectional view of the granular slag manufacturing apparatus, and FIG. 5 is a front view of the granular slag manufacturing apparatus according to the third embodiment of the present invention. is there.
[0011]
As shown in FIGS. 1 and 2, a granular slag manufacturing apparatus 10 according to a first embodiment of the present invention uses a slag pot 11 a to melt molten slag 11 that is molten steel slag generated in a metal refining process in a steelmaking plant. The slag pan 11a is tilted by a tilting means (not shown) and has two stages of rotating bodies 13 and 14 which collide and fly the molten slag 11 supplied via a chute 12. Further, the granular slag manufacturing apparatus 10 includes a number of mist nozzles 16a that fly from the rotating bodies 13 and 14 and generate water mist that cools the molten or semi-molten slag 15 granulated by its own surface tension, A rotating cylinder 16 is provided for receiving a falling slag (granular slag) 15a cooled by water mist, and the rotating bodies 13 and 14 are provided on a fixed mounting base 34, and the rotating cylinder 16 is a traveling carriage 17 , And the arrangement position of the rotating bodies 13 and 14 with respect to the rotating cylindrical body 16 can be adjusted. Hereinafter, these will be described in detail.
[0012]
As shown in FIGS. 1 and 2, four carriages 17 roll on a pair of rails 19 and 20 arranged at a predetermined parallel interval K in the left-right direction (width direction) on the common bed 18. , A rectangular bogie frame 22 having the wheels 21 mounted at four corners, and driving means 23 for driving the driving-side wheels 21. The driving means 23 includes an electric motor 24 with a speed reducer provided on the bogie frame 22, a sprocket wheel 25 mounted on the output shaft of the electric motor 24 with the speed reducer, and a sprocket wheel 26 provided on the drive-side wheel 21. , An endless chain 27 wound around the sprocket wheels 25, 26. With this configuration, the traveling carriage 17 can move forward and backward along the rails 19 and 20 by driving the electric motor 24 with the speed reducer. Reference numerals 28 and 29 in FIG. 1 denote wheel stoppers mounted on both ends of the rails 19 and 20 in the front-rear direction and determining the traveling range (retreat position to forward position) of the traveling vehicle 17.
[0013]
As shown in FIGS. 1 and 2, a predetermined interval L is provided in the front-rear direction on the bogie frame 22 of the traveling bogie 17 to support the rotating cylindrical body 16 with a pair of left and right support rollers 30, 31. Four support brackets 32, 33 are provided.
In order to cool the molten or semi-molten slag 15 granulated by the rotating bodies 13 and 14, a large number of mist nozzles 16a for jetting water mist are provided inside a rotary kiln type rotating cylindrical body 16 made of steel. And a ventilation means (not shown) for ventilating the inside of the rotating cylindrical body 16. The ventilation means includes a suction port provided at the discharge-side end of the rotary cylinder 16 and a suction blower connected to the suction port via a suction pipe. By sucking cool air from the ventilation gap provided on the rotating body 13 side (the molten slag 11 supply side), the inside of the rotating cylindrical body 16 can be ventilated.
[0014]
The rotating cylindrical body 16 is configured to be rotatable on the support rollers 30 and 31 by rotation driving means (not shown), and is arranged to be inclined downward in the discharge direction of the falling slag 15a. Therefore, the molten or semi-molten slag 15 flying in the rotating cylinder 16 is forcibly and rapidly cooled by water mist and ventilation, and then falls as a falling slag 15a and falls to the bottom in the rotating cylinder 16. Thereafter, the water mist is condensed by heat exchange with the slag 15 while being conveyed toward the front discharge port while repeatedly moving up and down with the rotation of the inclined rotary cylinder 16, and the water mist in the rotary cylinder 16 is removed. It is further cooled by the water staying at the bottom.
[0015]
The rotating bodies 13 and 14 are mounted on a mounting base 34 provided on the common bed 18, and the rotating bodies 13 and 14 are arranged at the rear end of the rotating cylindrical body 16. The axes of the rotating bodies 13 and 14 are orthogonal to the axis of the rotating cylinder 16, and the rotating body 14 is provided inside (front side) of the rotating body 13 and at a position slightly higher than the rotating body 13. . As shown in FIG. 1, a rotating body 13 (same for 14) has a plurality of blades (having a predetermined shape) formed on an outer peripheral surface thereof in order to cause molten slag 11 falling via a chute 12 to fly into a rotating cylindrical body 16. (Not shown) are attached at a predetermined pitch, and the molten slag 11 colliding with the rotating rotator 13 is flipped forward and granulated by the action of a large number of blades and centrifugal force as shown in the figure. The slag 15 is in a molten or semi-molten state. Note that the amount of the molten slag 11 discharged from the slag pan 11a to the chute 12 due to the tilting of the slag pan 11a varies, and in particular, when a large amount of the molten slag 11 collides with the rotating body 13, the molten slag 11 becomes granular. Instead of flying, it scatters behind the rotating body 13 and between the rotating bodies 13 and 14 and falls.
[0016]
An electric motor 36 with a speed reducer is mounted on a mounting bracket 35 provided on the common bed 18, and a sprocket wheel 37 mounted on an output shaft of the electric motor 36 with a speed reducer, and a sprocket wheel provided on the rotating body 13. The rotating bodies 13 and 14 can be rotated through endless chains 40 and 41 provided between the sprocket wheels 39 and the sprocket wheels 37 and 38 and between the sprocket wheels 38 a and 39. It has become. The gutter-shaped chute 12 lined with refractory is mounted on a mounting base 34, and the tip of the chute 12 is located almost directly above the rotating body 13.
[0017]
Next, a method of using the granular slag manufacturing apparatus 10 according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. It is assumed that the traveling carriage 17 is at a standby (forward) position (when the wheel stopper 29 is operated), which is a position where maintenance of the rotating bodies 13 and 14 is performed.
(1) The traveling vehicle 17 is driven to move to the retreat position (operating position) as shown in FIG.
(2) The rotating cylinder 16 and the rotating bodies 13 and 14 are rotated, and a water mist is jetted into the rotating cylinder 16 to ventilate the inside of the rotating cylinder 16.
(3) The slag pot 11 a containing the molten slag 11 is tilted and the molten slag 11 is supplied to the rotating body 13 via the chute 12.
[0018]
(4) A part of the molten slag 11 that falls onto the rotating rotating body 13 is flipped forward as shown in FIG. 1 to become a granulated molten or semi-molten slag 15, which is one part of the remaining molten slag 11. The part is scattered to the rotating body 14 and is flipped forward by the rotating rotating body 14 as shown in FIG. 1 to become a granulated molten or semi-molten slag 15, and the remaining molten slag 11 is It falls between 13 and 14 or through the back of the rotating body 13 to the bottom in the rotating cylinder 16.
(5) During the flight, the granulated slag 15 in a molten or semi-molten state is rapidly cooled by water mist and ventilation in the rotating cylindrical body 16 to become a falling slag 15 a and falls to the bottom in the rotating cylindrical body 16. On the other hand, the molten slag 11 that has fallen to the bottom in the rotary cylinder 16 between the rotating bodies 13 and 14 or through the rear of the rotating body 13 is mainly a falling slag 15a that has been cooled and granulated by water condensed with water mist. It becomes.
[0019]
(6) The falling slag 15a is conveyed toward the front outlet with the rotation of the inclined rotating cylinder 16 while being cooled by the water condensed at the bottom inside the rotating cylinder 16, and the falling slag 15a is discharged (shown in the figure). )) To the outside.
(7) When the slag production operation is completed, the rotation of the rotating cylinder 16 and the rotating bodies 13 and 14 is stopped, and the ejection of water mist in the rotating cylinder 16 and the ventilation in the rotating cylinder 16 are stopped.
(8) The carriage 17 is driven to move the rotary cylinder 16 to the original forward position.
(9) Maintenance such as replacement of the blades of the rotating bodies 13 and 14 is performed as needed while the rotating cylindrical body 16 is at the forward position.
[0020]
Next, a granular slag manufacturing apparatus 50 according to a second embodiment of the present invention will be described with reference to FIGS. The difference between the granular slag producing apparatus 50 and the granular slag producing apparatus 10 is that the rotating cylindrical body 51 is fixed and does not move forward and backward. The same components as those of the granular slag manufacturing apparatus 10 are denoted by the same reference numerals, and detailed description thereof will be omitted.
[0021]
In the granular slag manufacturing apparatus 50, the rotating bodies 13, 14 and the rotating cylindrical body 51 are fixedly installed, and a part of the rear side of the rotating cylindrical body 51 corresponding to the installation position of the rotating bodies 13, 14 includes: A repair opening / closing section 51a for maintenance of the rotating bodies 13 and 14 is provided. Since the rotating cylinder 51 does not move forward and backward, maintenance of the rotating bodies 13 and 14 becomes difficult. Therefore, the upper part of the rotating cylinder 51 covering the rotating bodies 13 and 14 is provided with a pair of double doors that open and close in the circumferential direction. A repair opening / closing portion 51a composed of the opening / closing arc pieces 52, 53 is formed. The rotating cylindrical body 51 is separated from the common bed 54 by a predetermined interval H along the longitudinal direction of the rotating cylindrical body 51 except for the repair opening / closing portion 51a, and via a pair of left and right supporting rollers 30, 31. It is supported by.
[0022]
As shown in FIGS. 3 and 4, the open / close arc piece 53 (same for 52) of the repair opening / closing section 51 a has a size of an arc that is approximately ４ of the cross section of the rotating cylindrical body 51, and has a lower end. Is rotatably mounted by a hinge mechanism (not shown). A rod 57 of a hydraulic cylinder 56 is pin-connected to an outer peripheral portion of the opening / closing arc piece 53 at an intermediate position via a mounting bracket 55, and a head side of the hydraulic cylinder 56 is attached to a lower outer peripheral portion of the rotary cylindrical body 51. It is pin-connected via a mounting bracket 58. Therefore, by driving the hydraulic cylinder 56, the pair of open / close arc pieces 52, 53 can be driven to open and close the rotating bodies 13, 14. In FIG. 4, the hydraulic cylinder for the opening / closing arc piece 52 is omitted.
[0023]
The rotating bodies 13 and 14 are arranged at positions wrapped in the rotating cylindrical body 51, and the repair opening / closing part 51a is closed when slag is manufactured (operated), and is opened when the rotating bodies 13 and 14 are maintained. It is configured so that In FIG. 3, reference numeral 12a denotes a chute, reference numeral 34a denotes a mounting base, reference numeral 35a denotes a mounting bracket for the electric motor 36 with a speed reducer, and reference numeral 40a denotes an endless chain. The method of using the granular slag manufacturing apparatus 50 conforms to the granular slag manufacturing apparatus 10, and thus the description thereof is omitted.
[0024]
Next, a granular slag manufacturing apparatus 60 according to a third embodiment of the present invention will be described with reference to FIG. The difference between the granular slag manufacturing apparatus 60 and the conventional granular slag manufacturing apparatus 70 according to the conventional example shown in FIG. 6 is mainly that the slag does not fly by the rotating bodies 13 and 14 or the rear end of the rotating cylindrical body 61 even if it does fly. After welding to the scattering prevention cover 62 provided on the rotating body 13, the vibrating conveyor 63, which is an example of a collecting means capable of collecting the slag falling below and behind the rotating body 13 into the rotating cylindrical body 61, is attached to the rotating bodies 13 and 14. This is a point provided below. That is, similarly to the conventional example, the rotating body 13 is disposed outside the rotating cylindrical body 61, and the scattering prevention cover 62 that covers the rotating bodies 13 and 14 is provided. A vibrating conveyor 63 is provided for collecting the generated accumulated slag 86 in the rotating cylindrical body 61.
[0025]
The plate-shaped vibrating body 64 of the vibrating conveyor 63 is provided below the rotating bodies 13 and 14 at a larger inclination than the rotating cylindrical body 61 toward the front side. It is located forward of the rear end of the cylindrical body 61. The vibrating conveyor 63 is provided with a vibrating means using, for example, an eccentric weight. A hydraulic nozzle 65 is mounted above the vibrating conveyor 63, and applies slag falling below and behind the rotating body 13 to the vibration of the vibrating conveyor 63 and the pressure of water jetted from the hydraulic nozzle 65. (Hydraulic pressure) promotes recovery by the flow-down action. Therefore, if the vibrating conveyor 63 and the hydraulic nozzle 65 are not provided, in the conventional granular slag manufacturing apparatus 70 shown in FIG. In the manufacturing apparatus 60, the liquid is once collected on the vibrating main body 64 of the vibrating conveyor 63, and then supplied to the rear end portion in the rotary cylindrical body 61 smoothly by the vibration of the vibrating main body 64 and the water pressure by the hydraulic nozzle 65. It has become. The method of using the granular slag manufacturing apparatus 60 is based on the granular slag manufacturing apparatus 10, and thus the description is omitted. In addition, maintenance of the rotating bodies 13 and 14 of the granular slag manufacturing apparatus 60 can be performed with the scattering prevention cover 62 removed. In FIG. 5, reference numeral 12b denotes a chute, reference numeral 34b denotes a mounting frame, and reference numeral 40b denotes an endless chain.
[0026]
The present invention is not limited to the above-described embodiments, and changes can be made without departing from the spirit of the present invention. For example, some or all of the above-described embodiments and modifications are described. The case where the apparatus for producing granular slag of the present invention is configured in combination is also included in the scope of the present invention.
In the above-described embodiment, the rotating cylindrical bodies 16, 51, and 61 are arranged to be inclined along the discharge direction of the falling slag 15a. However, the present invention is not limited to this. It can also be placed. When the rotating cylindrical bodies 16, 51 and 61 are arranged horizontally, a separate transporting means for continuously transporting the falling slag 15a to the discharge side is required.
[0027]
Although two stages of rotating bodies 13 and 14 are provided, the present invention is not limited to this, and one stage of rotating bodies can be provided as necessary. In addition, the rotating body 14 of the granular slag manufacturing apparatus 60 is arranged inside the rotating cylindrical body 61, but is not limited to this, and the rotating body 14 can be arranged outside the rotating cylindrical body 61 according to circumstances.
Although the blades are provided on the outer peripheral surfaces of the rotating bodies 13 and 14, the present invention is not limited to this, and any other structure may be used as long as a centrifugal force can be applied to the molten slag 11.
In the granular slag manufacturing apparatus 10, the rotating cylinder 16 mounted on the traveling carriage 17 is moved forward and backward, but is not limited to this. If necessary, the rotating cylinder may be fixed without using the traveling carriage. it can. However, when the rotating cylinder is fixed, maintenance of the rotating body becomes difficult. Further, it is also possible to fix the rotating cylinder and move the rotating bodies 13 and 14 on the contrary.
Although water mist was used for cooling the molten slag 11 and ventilation was further performed, the invention is not limited to this, and water mist alone may be used as needed.
[0028]
As the driving means of the traveling carriage 17, the electric motor 24 with a speed reducer, the sprocket wheels 25 and 26, and the endless chain 27 are used. However, the present invention is not limited thereto, and a cylinder driving system, an electric winch system, or the like is used as necessary. You can also.
In the granular slag manufacturing apparatus 50, the hydraulic cylinder 56 is used to open and close the opening and closing arc pieces 52 and 53. However, the present invention is not limited to this, and an electric cylinder or an air cylinder may be used depending on the situation.
In the granular slag manufacturing apparatus 60, the vibrating conveyor 63 is used as the collecting means, but the present invention is not limited to this, and the granular slag can be collected using other means. Further, the hydraulic nozzle 65 is provided, but is not limited to this, and may be omitted according to the situation.
[0029]
【The invention's effect】
In the apparatus for producing granular slag according to claim 1 and claim 2, 3, and 7, the slag that falls below and behind the rotating body is separately placed in the rotating cylinder without using a collecting means. Since it can be collected, the yield of product slag can be improved with a simple configuration.
In particular, in the granular slag manufacturing apparatus according to the second aspect, maintenance of the rotating body can be easily performed by adjusting the arrangement of the rotating body with respect to the rotating cylindrical body, so that maintenance workability is improved.
In the apparatus for producing granular slag according to claim 3, maintenance and granularity of the rotating body is achieved by opening and closing the repair opening / closing part of the rotating body provided in a part of the rotating cylinder while the rotating cylindrical body is fixed. Since slag can be manufactured, the apparatus is compact and the space is small.
[0030]
In the apparatus for producing granular slag according to claims 4 and 5 to 7 which depend on claim 4, even if a part or all of the rotating body is disposed outside the rotating cylindrical body, it falls below and behind the rotating body. Since the falling slag falling can be collected in the rotating cylinder by the collecting means, the restriction on the arrangement of the rotating body is reduced.
In particular, in the apparatus for producing granular slag according to the fifth aspect, since the recovery means is a vibrating conveyor, the recovery means can be made compact and can be arranged with a small space.
In the apparatus for producing granular slag according to the sixth aspect, the recovery of the falling slag can be promoted, so that the recovery efficiency is improved.
In the apparatus for manufacturing granular slag according to the seventh aspect, the falling slag is conveyed to the discharge side of the rotating cylinder while repeatedly moving up and down, so that there is no need to provide a separate conveying means in the rotating cylinder.
[Brief description of the drawings]
FIG. 1 is a front view of a granular slag manufacturing apparatus according to a first embodiment of the present invention.
FIG. 2 is a side sectional view of the apparatus for producing the granular slag.
FIG. 3 is a front view of a granular slag manufacturing apparatus according to a second embodiment of the present invention.
FIG. 4 is a side sectional view of the manufacturing apparatus for the granular slag.
FIG. 5 is a front view of an apparatus for manufacturing granular slag according to a third embodiment of the present invention.
FIG. 6 is a front view of a granular slag manufacturing apparatus according to a conventional example.
[Explanation of symbols]
10: Granulated slag manufacturing apparatus, 11: molten slag, 11a: slag pot, 12, 12a, 12b: chute, 13, 14: rotating body, 15: slag, 15a: falling slag, 16: rotating cylinder, 16a: Mist nozzle, 16b: nozzle header, 17: traveling trolley, 18: common bed, 19, 20: rail, 21: wheels, 22: trolley frame, 23: drive means, 24: electric motor with reduction gear, 25, 26: Sprocket wheel, 27: Endless chain, 28, 29: Wheel stopper, 30, 31: Support roller, 32, 33: Support bracket, 34, 34a, 34b: Mounting stand, 35, 35a: Mounting bracket, 36: With reduction gear Electric motor, 37: sprocket wheel, 38, 38a: sprocket wheel, 39: sprocket wheel, 40, 0a, 40b: Endless chain, 41: Endless chain, 50: Granular slag manufacturing device, 51: Rotating cylindrical body, 51a: Repair opening / closing section, 52, 53: Opening / closing arc piece, 54: Common bed, 55: Mounting bracket , 56: hydraulic cylinder, 57: rod, 58: mounting bracket, 60: granular slag manufacturing apparatus, 61: rotating cylindrical body, 62: scattering prevention cover, 63: vibration conveyor (recovery means), 64: vibration body, 65 ： Hydraulic nozzle

Claims (7)

A rotating body for causing the supplied molten slag to collide and fly, and a mist nozzle for generating a water mist flying from the rotating body and cooling the molten or semi-molten slag granulated by its own surface tension; In a granular slag manufacturing apparatus having a rotating cylindrical body that receives granular slag cooled by water mist,
An apparatus for producing granular slag, wherein the rotating body can be arranged in the rotating cylinder, and falling slag that falls below and behind the rotating body is collected by the rotating cylinder. The manufacturing apparatus for granular slag according to claim 1, wherein the rotating body is provided on a fixed mounting base, the rotating cylindrical body is mounted on a traveling vehicle, and an arrangement position of the rotating body with respect to the rotating cylindrical body. An apparatus for producing granular slag, which can be adjusted. The apparatus for manufacturing a granular slag according to claim 1, wherein the rotating body and the rotating cylinder are fixedly installed, and a repair opening / closing unit for repairing the rotating body is provided on a part of the rotating cylinder corresponding to an installation position of the rotating body. An apparatus for producing granular slag, comprising: A rotating body for causing the supplied molten slag to collide and fly, and a mist nozzle for generating a water mist flying from the rotating body and cooling the molten or semi-molten slag granulated by its own surface tension; In a granular slag manufacturing apparatus having a rotating cylindrical body that receives granular slag cooled by water mist,
A part or the whole of the rotating body is disposed outside the rotating cylinder, a scattering prevention cover is provided to cover the rotating body, and further, a recovery slag that falls below and behind the rotating body and falls into the rotating cylinder is collected. An apparatus for producing granular slag, characterized by comprising means. The apparatus for producing granular slag according to claim 4, wherein said recovery means is a vibrating conveyor. The apparatus for producing granular slag according to any one of claims 4 and 5, wherein the falling slag that has fallen into the collecting means is caused to flow down by water pressure. The apparatus for producing granular slag according to any one of claims 1 to 6, wherein the rotating cylindrical body is inclined downward along a discharge direction of the slag. .

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