JP2934842B2 - Inverted roasting device for sorting large lumps in raw materials - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for separating large raw materials, such as iron ore and slag generated from an ironworks, from raw materials which are separated by using a roaster (screen). The present invention relates to an inverting roasting device.

[0002]

2. Description of the Related Art Blast furnace slag, converter slag, and hot metal pretreatment slag generated from an ironworks contain metal (iron). It is used for building materials. The slag used for such an application requires crushing of raw slag (hereinafter simply referred to as raw material) brought in from a steel mill by one or more crushers. , Can not be put into the crusher. Therefore, these raw materials are first put on a rostrally arranged obliquely to remove large lumps. In this roster, a long material is arranged in parallel in a vertical direction at a predetermined interval to form a gap, or the long material arranged in a vertical direction at a predetermined interval is provided with a space and a plurality of connecting rods are used for horizontal. There is a grid that is connected in the direction to form a grid, and when a raw material containing a large lump is put into the rostral of such a structure from the top, depending on the shape of the lump, the large lump may have gaps in the rostr It may get caught in the rostor without biting into the cell and falling down diagonally. If the large lumps are caught in the rostr, it becomes difficult to classify the raw material thereafter.Therefore, at an appropriate time, the rostr is rotated around one end on the discharge side to approach an upright state, and It is naturally dropped by its own weight. However,
Some large lumps do not fall naturally depending on the shape of the large lumps. In this case, the worker pokes the large lumps with a long piercing rod to remove the large lumps from the rostor. In addition, as means for tilting the roaster, one end is rotatably fixed to the other end of the roster fixed to the support base, the tip of the wire wound around the winding drum is fixed, and the winding drum is fixed. , And one in which a hydraulic cylinder is attached to an intermediate portion of a side frame of the rostor whose one end is rotatably fixed to a support base to tilt the rostr.

[0003]

However, in the apparatus in which the winding drum is driven to tilt the rostr, the rostr is tilted and then returned to its original state by the weight of the rost. Therefore, the tilt angle is usually about 60 to 70 degrees, and it is theoretically difficult to exceed 90 degrees at the maximum. Further, in the case of the structure in which the roaster is tilted using the hydraulic cylinder, since the rotation angle of the rostral by the hydraulic cylinder is about 90 degrees at the maximum, the inclination angle of the roaster in use is about 15 degrees. , The tilt angle of the roster is 105 with respect to the horizontal plane.
The degree was the limit. On the other hand, the detachment force F of the large lump from the rostor is closely related to the tilt angle of the rotosul. When the weight of the large lump is W and the tilt angle of the rostle with respect to the horizontal plane is θ, the following equation ( As shown in 1), it can be seen that the closer the tilt angle is to 180 degrees, the more advantageous. F = −Wcos θ (however, 90 degrees ≦ θ ≦ 180 degrees) (1)

[0004] In addition, the raw material is charged into the roast by a dump truck, a belt conveyor, or the like, and the raw material is charged into the rost from a certain height. In this case, there is a problem that even if the rostral is inverted to an angle of 180 degrees with respect to the horizontal plane, it cannot be removed. Furthermore, when the rostor is composed of a plurality of long members provided at predetermined intervals in the vertical direction, when the large blocks bite into the gaps between the long members, the long members are elastically deformed to form the large blocks. It was in a state where it was retained and it was extremely difficult to remove it. This is because, even in the case of a grid-like rostle in which a flat plate is used as the long material and the middle position in the height direction of adjacent flat plates is connected at intervals by a plurality of connecting rods made of round bars, when a large mass cuts into the upper portion of the flat plate, However, there is a problem that the large lumps are difficult to remove because they are elastically opened and hold the large lumps. In addition, such a problem is a problem which occurs not only in the processing of ores and rocks in which a large mass is removed by using a rostor, but also in the processing of not only slag generated from an ironworks as a raw material. The present invention has been made in view of such circumstances, and even if a large lump is pierced into the rostral, an inverted rostor that sorts a large lump in a raw material that can be separated from the large lost without requiring human intervention. It is intended to provide a device.

[0005]

According to the present invention, there is provided a semiconductor device comprising:
Inverted roasting apparatus for sorting large lumps in the described raw material is a device for placing the raw materials mixed with large lumps on the rostrum and sorting and removing the large lumps, centering on one end of the rostrum, Rotating means for inclining to an angle of 100 to 180 degrees with respect to a horizontal plane, a stopper provided at a rotation end portion of the roster, for stopping the rotation of the rotated rostor, and a counterweight for reducing the eccentric load of the rostor. Having. According to a second aspect of the present invention, there is provided an inverting roasting apparatus for selecting large lumps in a raw material, wherein the rotating means comprises a rotary actuator using hydraulic pressure.

In the reversing roasting apparatus for sorting large lumps in the raw material according to the first and second aspects, the rotating means tilts the rostral to an angle of 100 to 180 degrees with respect to a horizontal plane about one end of the rostral. As shown in the above formula (1), a large detachment force acts on the large lump caught on the rostrum. And since the stopper which stops the rooster which was rotated is provided, a large impact force acts on the large lump caught on the roster in the detaching direction. By these synergistic actions, the caught mass is released from Rostor. In particular, claim 2
In the reversing rostral device for sorting large lumps in the described raw material, since a rotary actuator using hydraulic pressure is used, the tilt angle of the rostral can be freely set unlike a hydraulic cylinder or the like, and as a result, the horizontal plane of the rostral Can be rotated about 180 degrees.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the accompanying drawings to provide an understanding of the present invention. Here, FIG. 1 is a partially omitted side view of the reversing rostral apparatus according to one embodiment of the present invention, FIG. 2 is a plan view around the rostral used in the reversing rostral apparatus, and FIG. .

As shown in FIGS. 1 to 3, a reversing roasting apparatus 10 according to an embodiment of the present invention includes a pedestal 12 provided so as to straddle a pit 11, and tilts to an intermediate position between the pedestals 12. Rostor (screen) 13 provided as possible
And a rotary actuator 15 that uses hydraulic pressure, which is an example of a rotating unit that rotates a shaft 14 provided at one end of the roster 13. Hereinafter, these will be described in detail. The gantry 12 is made of a material having sufficient strength such as a channel or an H-beam, and has a ceiling 16
, So that the raw material sieved by the roastle 13 does not rain. Bearing stands 17 are provided on both sides of the intermediate position of the gantry 12, and bearings 18 and 19 are provided thereon.
Is placed. These bearings 18 and 19 have Rostor 1
A shaft 14 provided at one end of the shaft 3 is rotatably supported.

[0010] As shown in FIG.
It comprises a peripheral frame 20, a plurality of flat plates 21, which are examples of vertical members arranged in a vertical direction inside the peripheral frame 20, and a round bar 22, which is an example of a horizontal member connecting adjacent flat plates 21. The interval between adjacent flat plates 21 is about 320 mm, and the interval between adjacent round bars 22 is about 250 mm. Flat plate 21
Has a cross section of 200 mm × 36 mm, and is arranged in an upright state to withstand an impact load applied when the raw material is charged. The round bar 22 has a diameter of 50 mm.
And, as shown in the partially enlarged view of FIG. 3, is welded and fixed to the upper position of the flat plate 21. In this way, by setting the mounting position of the round bar 22 to the upper position of the flat plate 21, elastic deformation when a large lump tries to enter the mesh 23 formed by the flat plate 21 and the round bar 22 at the time of material input is prevented. The structure is such that the flat plate 21 and the round bar 22 are not elastically supported even if a large lump in the raw material partially enters.
In addition, a blind plate 24 is provided at one end of the rostral 13,
A shaft 14 having sufficient strength is fixed to a lower portion thereof via a support member 14a. Then, by fixing the shaft 14 to the bearings 18 and 19,
The rostrum 13 can be tilted. Side walls 13a are provided on both sides of the roaster 13 to prevent the charged raw material from splashing out to the side.

On the other hand, a first receiving member 25 is provided at a rear portion of the gantry 12 to receive the rostr 13 at a fixed angle (about 15 degrees). In addition, a second receiving member 27 having a stopper 26 for stopping the rotation of the roaster 13 is provided when the roaster 13 is tilted 130 degrees with respect to the horizontal centering on one end. Has become. As shown in FIG. 2, the one end of the shaft 14 is provided with the rotary actuator 15 fixed to the gantry 12 by a support member (not shown). The rotary actuator 15 can stop the shaft 14 at an arbitrary angle within 360 degrees depending on the setting. Therefore, in this embodiment, the first receiving member 25 and the second receiving member 2
7 are provided with limit switches (not shown), respectively.
The hydraulic solenoid valve connected to 5 is turned off,
3 stops at a predetermined angle.

A hopper 30 for collecting the raw material from which large lump has been removed is provided below the rostror 13 on the first receiving member 25, and a feeder 31 is provided below the hopper 30. The collected raw materials can be discharged to the outside. A first counterweight 32 is provided at the other end of the shaft 14, and a second counterweight 33 is provided at a lower portion on one end side of the roastle 13. , So that the roaster 13 can be smoothly tilted.

Therefore, when using the reversing roasting apparatus 10, when the roasting roll 13 is brought into contact with the first receiving member 25 and the raw material loaded and conveyed on a dump or the like is received, the roasting roasting device 13 is not used. Those smaller than the mesh 23 fall as they are and fall into the lower hopper 30.
The dropped raw material is discharged outside by the feeder 31. On the other hand, a large lump larger than the mesh 23 of the rostrum 13 falls down into the pit 11 as it is because the rostelle 13 is inclined downward by about 15 degrees. On the other hand, a large lump 34 slightly larger than the mesh 23 is hooked while being partially fitted into the mesh 23. In this case, many large lumps 34
If the material is caught on 3, the subsequent processing of the raw material becomes difficult. Therefore, the rotary actuator 15 is driven to rotate the rostral 13 to a position about 130 degrees with respect to the horizontal plane.
At this time, when the leading end of the roaster 13 comes into contact with the stopper 26, a load is applied to the inserted large mass 34 in a direction of pulling out from the mesh 23, so that the large mass 34 falls automatically and falls into the pit 11.
Will accumulate inside.

Note that the size of the mesh 23 of the roastle 13 is determined by the raw material to be sorted, and is not limited to the figures of the embodiment of the present invention. Further, in the above embodiment, the angle of the roastle 13 is 1 with respect to the horizontal plane.
Although tilted to an angle of 30 degrees, the position of the second receiving member 27 and the stopper 26 can be changed, for example, to tilt the rostral 13 in the range of 100 to 180 degrees with respect to the horizontal plane. In the present embodiment, the vertical member forming the rostor is formed of a flat plate, and the horizontal member is formed of a round bar. However, the vertical member and the horizontal member arranged at predetermined intervals are respectively formed of a round bar and a flat plate. The present invention is also applicable to a case where the horizontal member is omitted, and a case where the roster is constituted by vertical members arranged at predetermined intervals without the horizontal member. Furthermore, in the above-described embodiment, the rostrator is tilted using a rotary actuator, but other driving means may be used.

[0014]

According to the first and second aspects of the present invention, the reversing roasting apparatus for sorting large lumps in the raw material, as is apparent from the above description, rotates the rostral up to 100 to 180 degrees with respect to the horizontal plane, In addition, since the stopper is provided at the final stop position, a large detaching force acts on the large lump that has been bitten into the rostral, and as a result, the large lump can be removed without requiring any human intervention. In addition, since there is a counterweight for alleviating the eccentric load of the rostral, the rostral can be tilted smoothly. In particular, in the reversing roasting apparatus for sorting large lumps in the raw material according to the second aspect, since the rotary actuator using hydraulic pressure is used for the rotating means, the rostral is inclined at an angle of 100 to 180 degrees with respect to the horizontal plane. The mechanism for turning is extremely easy.

[Brief description of the drawings]

FIG. 1 is a partially omitted side view of an inversion roaster device according to an embodiment of the present invention.

FIG. 2 is a plan view around a rostre used in the reversing rostral device.

FIG. 3 is a side view around the roster.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 Inversion roasting device 11 Pit 12 Stand 13 Rostor 13a Side wall 14 Shaft 14a Supporting member 15 Rotary actuator 16 Ceiling 17 Bearing stand 18 Bearing 19 Bearing 20 Surrounding frame 21 Flat plate 22 Round bar 23 Grid 24 Blind plate 25 First receiving member 26 Stopper 27 Second receiving member 30 Hopper 31 Feeder 32 First counterweight 33 Second counterweight 34 Large lump

Claims (2)

(57) [Claims] 1. A device for placing a raw material mixed with a large lump on a rostrum and sorting and removing the large lump, wherein one end of the roastle is centered on a horizontal plane.
A rotating means for tilting to an angle of 0 to 180 degrees, a stopper provided at a rotation end portion of the roaster to stop the rotation of the rotated roster, and a counterweight for reducing the eccentric load of the rostrel. A reversing roasting apparatus for sorting large lumps in raw materials. 2. The reversing roasting apparatus according to claim 1, wherein said rotating means is a rotary actuator using hydraulic pressure.