JPS6352095B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an automatic copper converter anode scrap loading device.

[Prior Art and Problems to be Solved by the Invention] Normally, copper smelting and refining involves processing copper raw materials (copper concentrate, etc.) in a melting furnace, reverberatory furnace, flash smelting furnace, etc. to create a molten metal, and then The molten body is transferred to a converter and blown with oxygen-containing air to refine it into metallic copper.

The above-mentioned converter operations are generally divided into two stages: the manufacturing stage and the copper manufacturing stage. During the production stage, the iron contained in the iron (contained in the form of FeS) is oxidized by air blowing, and by adding silicate ore, etc., it is turned into slag and separated. Next, purified white (Cu ₂ S)
It is further blown and refined into metallic copper. The above oxidation reaction is a combustion reaction of sulfur (S) in the sulfide and is an exothermic reaction, so the temperature of the melt in the furnace is
If left as is, it will continue to rise in proportion to the amount of sulfide and melt burned, damaging the furnace bricks. Therefore, in normal converter operation, in order to keep the rise in hot water temperature within a certain temperature range, cold material is charged depending on the grade and quantity. As the cold material, scraps containing various types of copper are usually used. For example, it is economically and operationally advantageous to use anode scrap, which is discarded in the electrolytic process that is the final step in copper smelting, as a cold material.

Generally, cold material is loaded into a port in several batches either before or during converter operation, and then charged all at once using a crane.
In particular, in the case of charging in the middle of operation, the blowing process is interrupted and the operation time for one batch is extended throughout the production and copper production stages, which results in a lower throughput per batch operation. It will decrease as

In addition, sulfur combustion gas (high concentration SO ₂ gas) generated during converter operation is introduced into the sulfuric acid plant and treated, but if converter operation is interrupted when charging coolant, the sulfuric acid plant is also normally used for combustion. Since the introduction of gas is suspended, SO2 _- containing gas is likely to leak from the converter. The leaked gas is treated by suction using desulfurization equipment, etc., but the treatment cost is expensive, and if it is not desulfurized directly, it will cause environmental deterioration.

Furthermore, in order to minimize the number of interruptions due to cold material charging mentioned above, it is necessary to charge the cold material all at once using a crane, but if this amount of cold material becomes large, the temperature inside the furnace will rise rapidly. Repeated rapid falls have an unfavorable effect on the refractories inside the furnace.

[Objective of the Invention] The first object of the present invention is to focus on the fact that the charging of cold material interrupts the converter operation, resulting in a decrease in the throughput per batch operation. To suppress the extension of the converter processing time due to the charging of coolant by automatically charging the coolant into the converter without interrupting the blowing process.

The second object of the present invention is to reduce the number of interruptions in ejaculation due to the charging of cold material, thereby reducing the amount of leaked gas, reducing the processing work, and improving the working environment as a result. It is.

A third object of the present invention is to uniformly charge the coolant during blowing in order to prevent a sudden increase in the temperature inside the furnace and a sudden effect due to the bulk charge of the coolant. Since the cold material can be charged uniformly in this way, it is easy to control the hot water temperature at a constant level, which has the secondary effect of reducing damage to the furnace bricks and extending the life of the furnace.

Specifically, it is an object of the present invention to efficiently and automatically charge a scrap anode into a converter, thereby shortening the operating time of the converter, minimizing gas leakage, and further reducing the An object of the present invention is to provide an automatic copper converter charging device capable of extending the life of the furnace by keeping internal temperature control constant.

[Means for Solving the Problems] In order to achieve this object, the present invention provides an anode rack that accommodates a plurality of scrap anodes, a trolley on which the anode drag is placed and moves to a predetermined position, and an anode drag on the trolley. A pusher device that sequentially extrudes the scrap anodes one by one from the pusher device, and the scrap anodes extruded by this pusher device are sequentially transferred one by one onto a conveyor that extends close to the charging port of the copper converter. The present invention provides an automatic copper converter anode scrap insertion device comprising: a transfer device for transferring copper converter scrap; and a charging chute device provided at an end of the carrying conveyor near the copper converter charging inlet.

[Embodiments and Operations] Referring to FIG. 1, the automatic copper converter anode scrap insertion device according to the present invention shown here is equipped with an anode rack 12 loaded with a plurality of plate-shaped scrap anodes 10. A cart device 14, a pusher device 16 that sequentially inserts the scrap anodes 10 one by one from the anode drag 12 on the cart device 14, and a transfer device 18 that grasps and moves the pushed-out scrap anodes 10. A conveyor device 20 extending diagonally upward receives the scrap anode from the transfer device 18 at its lower end, and a conveyor device 20 is provided adjacent to the upper end of the conveyor device 20 to receive the scrap anode from the transfer device 18. and a charging chute device 22 for receiving and charging the converter 1 into the converter 1.

As best seen from Figure 2, the trolley device 1
4 includes an elongated vehicle body 24 and a plurality of wheels attached to this vehicle body. In the illustrated embodiment, the wheels consist of two driving wheels 26, six driven wheels 28, and two auxiliary wheels 30. These wheels are mounted on rails 32 (see FIGS. 1, 3, and 4), so that the trolley device 14 can run along the rails 32.

As best seen in FIG. 3, the drive wheels 26 are driven by a cyclo-reducer motor 34 located on the vehicle body 24. A spur gear 36 fixed to the rotating shaft of the motor 34 meshes with a spur gear 38, which extends across the vehicle body 24 and is rotatably supported thereon by a bearing 40. A key 44 is attached to the shaft 42. Horizontal axis 42
A spur gear 46 is keyed at each end of the drive wheel 26, and these spur gears 46 mesh with a spur gear 50 fixed concentrically with the drive wheel 26. Therefore, as the motor 34 rotates, the drive wheel 26 is rotationally driven via the spur gears 36, 38, 46, and 50, and the trolley device 14 is moved. Electric power is supplied to the motor 34 by an electric winding drum 52.
This is done via a cable (not shown) wrapped around the vehicle, so that even when the carriage device 14 moves, the cable is always kept free of slack. In addition, the vehicle body 24
On the top is a well-known uninterruptible device 54 and a control panel/operation panel 5.
6 is also placed.

In the illustrated embodiment, there are seven anode drags 12-1, 12-2, 12-3, 1 on the trolley device 14.
2-4, 12-5, 12-6, and 12-7, and each anode rack 12 is set with a plate-shaped scrap anode 10 of a well-known structure. It is transported by truck, etc. The anode truck 12 can be placed on the trolley device 14 by a forklift, as is well known.

A rail clamp device 60 is also attached to the vehicle body 24. As best seen in FIG. 4, each rail clamping device 60 includes a transverse shaft 64 extending across the vehicle body 24 and rotatably supported thereon by a bearing 62. As best seen in FIG. A spur gear 66 is keyed 66' to this transverse shaft 64, and this spur gear 66 is connected to a spur gear 70 fixed to the rotating shaft of a motor 68 with a cyclo reducer installed on the vehicle body 24.
They are interlocked. A double thread (left and right thread) 72 is provided at each end of the lateral shaft 64, and a pair of clamp members 74 are engaged therewith. Approximately middle portions of these clamp members 74 are pivotally connected to the vehicle body by pins 76, and lower ends 74A of the clamp members 74 are positioned to engage with both upper side surfaces of the rail 32. Therefore, when the motor 68 rotates, the transverse shaft 64 rotates through the spur gears 70, 66, and the action of the double thread screw 72 causes the clamp members 74 to move away from and toward each other so that their lower ends 7
4A to pinch or release the rail 32. Thus, as will be described later, after the trolley device 14 has moved toward the pusher device 16 and the corresponding anode drag 12 has been aligned with the pusher device 16, the trolley device 14 is fixed to the rail 32 by the rail clamp device 60. be able to. Note that power is also supplied to the motor 68 of the rail clamp device 60 through a cable wound around the winding drum 52.

The pusher device 16 has a box-shaped frame 80 with a vertical section 82 fixed on a floor 84 and a transverse section 86 fixed at both ends to the top of the vertical section 82.

5 and 6, in the illustrated embodiment, the pusher device 16 also includes a pair of ball screws 88 disposed within and extending longitudinally of a lateral portion 86 of the frame 80; A pusher member 90 is screwed into each of the ball screws 88. A sprocket 92 is fixed to one end of each ball screw 88, and this sprocket 92 is connected to a corresponding sprocket 9 fixed to the rotating shaft of a motor 96 with a cyclo reducer by a chain 94.
It is drivingly connected to 8. Therefore, motor 96
By energizing the ball screw 88, the ball screw 88 rotates, and the pusher member 90 moves to the left or right as viewed in FIG. 5, depending on the direction of rotation.
In order to move the pusher member 90 smoothly and prevent the ball screw 88 from bending, a slide rail 100 is provided on the horizontal frame portion 86, and a shift table 102 is provided on the side surface of the upper portion 90A of each pusher member 90. It is preferable to engage these slide rails 100. Of course, the arrangement may be reversed. Furthermore,
In order to remove dust etc. that accumulates on the ball screw 88,
It is preferable to provide a brush wiper 104 on the upper part 90A of each pusher member 90.

A transfer device 18 is also attached to the lateral frame portion of the pusher device 16. This transfer device 18
is suspended from the lateral frame portion 86 and supported by the support shaft 18a, as best seen in FIG.
A pair of cylinders 110 pivotably mounted on the
(only one is shown in the figure). A transfer claw device 114 is attached to the outer end 112 of the piston rod of the cylinder 110. The transfer claw device 114 has a bifurcated claw portion 116 that engages with the anode.
A pendulum 118 is pivotally attached to the shaft 116a. The pendulum 118 is normally tilted downward due to its own weight, and the cylinder 1
10 also has a heavy transfer device 114 attached to the outer end 112 of its piston rod, so the rod side is tilted downward. The anode grip detection device detects one anode when the pendulum 118 rotates relative to the claw portion 116,
This causes the transfer device 18 to move its piston 110
is activated to send the anodes one by one first. The operation of this transfer claw device 114 for detecting one anode will be described in detail below with reference to FIGS. 7A to 7D.

The pusher device 16 pushes the anode group toward the transfer device 18 in a state where, for example, the anode drag 12-1 of the plurality of anode drags on the trolley device 14 is aligned with the pusher device 16. For this reason, the anode is connected to a pair of rack rails 1 provided at the upper end of the anode rack 12-1, as shown in FIG. 7a.
Slide on 2A. The operation of the pusher device 16 is set to stop when the leading anode drag reaches the top of a cam surface 12B formed on the rack rail 12A and raised obliquely upward. Because of this obliquely upwardly directed cam surface 12B, the upper portions of the series of anodes form a step with respect to adjacent anodes. In this state, transfer device 1
8 cylinder 110 is activated and retracts the piston rod. With this operation, the lower claw 11 of the claw portion 116
The lower end of 6A rests on top of the leading anode and then slides over it. Next, lower nail 116A
falls onto the top of the next rear anode with subsequent retraction of the piston rod. For this reason, the entire claw portion 116 is lowered, but on the other hand, the pendulum 118
is prevented from falling because its lower surface hits the upper part of the leading anode, and therefore rotates around the shaft 116a relative to the claw portion 116. A detector 120 mounted on the claw portion 116 is energized for this purpose.
Detector 120 issues a signal and the retraction movement of cylinder 110 is stopped. Immediately after this, the transfer device 18 reverses the cylinder 110 to extend the piston rod, and the lower claw 116A of the claw portion 116 pushes the rear surface of the leading anode to transfer the anode. By repeating this operation step, the anodes are transferred one after another, one by one.

Note that the detector 120 may be an optical type using a photo sensor or the like, but may also be a mechanical type using a micro switch.

As described above, the anodes are normally transferred one by one reliably, but if for some reason the level difference at the top of the anode is small or cannot be formed, only the above configuration of the transfer claw device 114 is used. In this case, double loading of the anode rack occurs, that is, each anode is not reliably detected and transferred one by one. This is because the pendulum 118 does not rotate sufficiently relative to the pawl portion 116 to operate the detector 120. Therefore, in the present invention, in order to solve this problem, a double safety configuration is adopted as described below.

Claw portion 11 as made clear in Figure 7A.
An elastic detection rod 120A is suspended from the tip of the electrode 6, and the normal distance between the detection rod 120A and the lower end of the lower claw 116A of the claw portion 116 is set to be less than twice the thickness of the anode. As a result, even if the level difference at the top of the anode drag is small and the pendulum 118 does not rotate sufficiently and the detector 120 does not work, if the tip of the lower claw 116A crosses over two or more anodes and tries to slide on the upper part of the anode, as shown in Fig. 7D. As can be clearly understood, since the detection rod 120A hits the entire surface of the leading anode and swings, this movement is detected by, for example, a micro switch, and the piston rod of the cylinder 110 of the transfer device 18 is pulled. The loading operation is now stopped.

As described above, the detector 12 using the pendulum 118
When either the zero operation or the micro switch operation by the detection rod 120A occurs, the cylinder 11
If the 0 retraction operation is stopped, the problem of double capture will not occur.

With particular reference to FIGS. 8 and 9, the transfer conveyor system 20 includes an upright portion 130 coupled to the pusher device 16 and an inclined portion 132 extending obliquely upward from the top of the upright portion 130. The transfer conveyor device 20 includes a pair of mutually spaced endless conveyor chains 134, to which hook elements 136 are attached at predetermined intervals along the length of the endless conveyor chains 134. These hook elements 136 are connected to the anode receiver 13 provided on the upright portion 130 facing the pusher device 16.
8, so that the anodes 10 dropped from the anode rack 12 into this anode receiver 138 by the transfer device 18 are continuously received and transferred toward the top end of the conveyor device 20. It's summery. As shown in FIG. 1, a chute device 22 is disposed at the upper end of the inclined portion 132 of the conveyor device 20, and is configured to receive the scrap anode 10 transferred by the conveyor device 20. It's getting old.

As shown in FIG. 10, the carrying conveyor device 20
A device 140 is provided at the top of the anode to prevent entrainment that sometimes occurs due to deformation, weight, etc. of the anode. This entanglement prevention device 140 includes a roller 14 with a built-in bearing attached to a shaft 144 on the same circumference as the hook 136 inside the left and right sprockets 142.
6 and hanging on the hook 136
0 quickly falls into the chute device 22. The entrainment prevention device 140 itself is attached to a head shaft 148.

Referring to FIGS. 1 and 11, the chute device 22 is configured such that the anode slides down under its own weight due to the drop from the top end of the conveyor device 20 and the angle of inclination. It is preferable that the position where the anode 10 comes off the transport conveyor device 20 and falls into the chute be at the center of the chute 22 or a position closer to the transport conveyor side from the center to avoid clogging.
The chute device 22 consists of an inner cylinder 150 and an outer cylinder 152, and only the outer cylinder 152 is configured to slide. The outer cylinder 152 is driven by a trunnion bracket 15 fixed to the frame 22A of the chute device 22.
This is done by means of a hydraulic cylinder 156 pivotally connected to 4. The hydraulic cylinder 156 has a built-in proximity switch that determines the forward limit and the backward limit, and by adjusting the positions of these proximity switches, the stroke of the outer cylinder 152 can be arbitrarily determined.

When the outer cylinder 152 of the chute device 22 moves toward the converter 1, as shown in FIG.
A door device 160 attached to the door can be opened. This door 160 is a double door type that is elongated in the vertical direction, and door portions 164 are attached by brackets 166 to two shafts 162 rotatably supported on the left and right sides of the charging port of the converter 1. . The shaft 162 has intermeshed sector gears 168 at its top end, allowing them to rotate synchronously in the same direction. One bracket 166 of the door section 164 on the right side as seen in FIG.
The piston rod 172 of the hydraulic cylinder 170 is
The outer ends of the door are pivotally connected, and by energizing the hydraulic cylinder 170, the left and right door portions 164 can be opened simultaneously. When the door 160 opens, the outer cylinder 152 of the chute device 22 extends into the charging port,
Scrap anode will be used.

In the above arrangement, during operation, the anode truck 12 is placed on the trolley device 14 using a forklift. In the illustrated embodiment, seven anode drags 12-1, 12-2, 12-3, 12-4, 12
-5, 12-6, and 12-7 are listed. next,
The operator starts the trolley device 14 using the operation panel 56 and moves it to the pusher device 16. A selection sensor (not shown) (limit switch and dog) is provided under the car body 24 of the trolley device 14.
The cart is stopped at a predetermined position below the pusher device 16, and first, the first anode rack 12-1 is placed in the working position. At this time, the rail clamp device 60 is activated to fix the trolley device 14.

Next, the pusher member 90 of the pusher device 16 moves forward (moves to the left as seen in FIG. 1) to remove the scrap anode 10 from the first anode drag 12-1.
is extruded, and the extruded scrap anode 10 is dropped onto the anode receiver 138 of the conveyor device 20 by the transfer device 18. Once all the scrap anodes 10 have been pushed out from the anode drag 12-1, the pusher member 90 is retracted;
Activate the reverse limit switch (not shown),
The rail clamp device 60 of the trolley device 14 is released. Next, the trolley device 14 is moved to position the second anode rack 12-2 below the pusher device 16. Thereafter, the rail clamp device 60 is activated again to secure the trolley device 14. In this way, the same operation is repeated for the second and subsequent anode drags.

Once the scrap anodes have been transferred from all the anode racks on the trolley device 14 to the transfer conveyor device 20, the pusher member automatically retreats to complete the transfer operation. The operator then returns the trolley system 14 to the loading position and replaces the empty anode rack with another anode rack containing a scrap anode.

Here, it is preferable that the pusher device 16 is provided with a sensor that detects the height of the anode 10 loaded on the trolley device 14. When any of the anodes protrudes, the abnormal height thereof is detected by this sensor and the trolley device 14 is brought to an emergency stop, thereby stopping the mechanism and avoiding danger.

The scrap anodes 10 dropped one after another onto the anode receiver 138 on the upright portion 130 of the transport conveyor device 20 are picked up one after another by the hooks 136 on the moving endless conveyor chain 134, and are transferred to the transport conveyor device 20 one after another. from the top end into the chute device 22. Before the scrap anode 10 is dropped, the outer cylinder 152 of the chute device 22 moves forward, the door 160 opens to receive it, and the scrap anode is thrown into the converter 1.

The timing of the above operations can be synchronized by placing limit switches and sensors at key points, and the charging of the scrap anode into the converter can be completely automated.

[Effects of the Invention] According to the present invention, the scrap anodes are transferred one by one from the anode truck carried by a trolley to the conveyor, and are sequentially fed into the converter one by one, thereby preventing gas leakage. It is kept to a minimum and unlike bulk charging, the temperature inside the furnace does not drop suddenly.
In addition to shortening operating time, it also saves energy by eliminating the need for a crane, taking precautions to collect leaked gas, and adjusting the temperature inside the furnace.

[Brief explanation of the drawing]

FIG. 1 is a side view showing the entire automatic copper converter anode scrap insertion device according to the present invention. Second
The figure is a side view of a cart device used in the automatic copper converter anode scrap insertion device of FIG. 1. FIG. 3 is a partially sectional side view showing the drive mechanism of the trolley device. FIG. 4 is a partially sectional side view showing the rail clamp device attached to the bogie device. Figure 5 is the first
FIG. 2 is a side view of a pusher device used in the copper converter anode scrap automatic insertion device shown in FIG. 6 is a cross-sectional view of the pusher device of FIG. 5; FIG. FIG. 7 is a side view of the transfer device incorporated into the pusher device of FIG. 5. 7A to 7D are explanatory views of the operation of the detection and transfer portion of the transfer device shown in FIG. 7. 8 is a side view of the conveyor device used in the automatic copper converter anode scrap insertion device of FIG. 1. FIG. 9 is a fragmentary side view of the conveyor device of FIG. 8; FIG. FIG. 10 is a fragmentary partial cross-sectional side view of the entrapment prevention device installed at the top of the conveyor device of FIG. 8. FIG. 11 is a side view of the chute device used in the automatic copper converter anode scrap insertion device of FIG. 1. FIG. 12 is a front view of a door device provided on the furnace wall of the converter for opening and closing the charging port. FIG. 13 is a schematic diagram showing the structure of a conventional converter. In the drawings, 10... Scrap anode;
12... Anode truck, 14... Cart device, 1
6... pusher device, 18... transfer device, 20...
...Transfer conveyor device, 22...Chute device.

Claims (1)

[Scope of Claims] 1. An anode drag containing a plurality of scrap anodes, a cart on which the anode drag is placed and moved to a predetermined position, and a pusher device for pushing out the scrap anode on the anode drag on the cart. A transfer device that sequentially transfers the extruded scrap anodes one by one onto a conveyor extending to the charging port of the copper converter; 1. An automatic copper converter scrap anode charging device, comprising a charging chute device. 2. In the copper converter scrap anode automatic charging device according to claim 1, the copper converter has a double door that blocks the charging port, and the charging chute device has a double door that blocks the charging port. Before receiving the scrap anode from the conveyor, the double door is opened and a portion of the charging chute extends into the charging port to charge the scrap anode into the copper converter and into a predetermined position. The automatic copper converter scrap anode loading device is characterized in that after the number of racks is completed, the charging chute portion is retracted, and then the double door is closed to complete the operation. 3. In a device for detecting and grasping each scrap anode provided in a transfer device for transferring scrap anodes one by one on an anode rack of an automatic scrap anode loading device for a copper converter, A claw member suspended by a lateral movement device, a movable member provided to be movable relative to the claw member, a switch device energized by the relative motion of the movable member, and a rack rail for sliding the plurality of scrap anodes. The plurality of scrap anodes that reach the cam surface have an inclined cam surface provided above, and because of the inclination of the cam surface, the upper parts of the plurality of scrap anodes have a level difference with respect to the upper parts of the adjacent scrap anodes. occurs, and when the lateral movement device moves the claw member in the direction in which the upper part of the scraper anode descends, the lower end of the claw member slides over the upper part of the leading scrapp anode. , because of the step, it subsequently falls onto the top of the next scrap anode, while the movable member hits the first scrap anode, resulting in movement of the movable member relative to the claw member. and energizes the switch device. 4. In a device for detecting and grasping each scrap anode provided in a transfer device for transferring scrap anodes one by one on an anode rack of an automatic scrap anode loading device for a copper converter, A claw member suspended by a lateral movement device, a movable member provided to be movable relative to the movable member, a switch device energized by the relative movement of the movable member, and an elastic detection rod suspended from the claw member. and an inclined cam surface provided on a rack rail on which a plurality of the scrap anodes slide, and the normal distance between the elastic detection rod and the lower end of the claw member is equal to or equal to the plate thickness of the anode scrap. Due to the inclination of the cam surface, the plurality of scrap anodes that are set to be twice or less and have reached the cam surface have a level difference in their upper part with respect to the upper part of the adjacent scrap anode, When the lateral movement device moves the claw member in the direction in which the upper part of the scrap anode descends, the lower end of the claw member slides over the upper part of the leading scrapp anode, and because of the step, the claw member slides over the top of the scrap anode. It then falls onto the top of the next scrap anode, while the movable member hits the first scrap anode, resulting in movement of the movable member relative to the pawl member, causing the switch device to move. energized, such that the step is so small that the relative movement of the movable member is not sufficient to energize the switch device, so that the lower end of the pawl member is further above the upper part of the next scraping anode. When the user tries to slide, the elastic sensing rod hits the leading scrap anode and swings, thereby energizing the switch device.