JP3435429B2 - Furnace slag removal equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a slag removing device for removing slag adhering to the bottom of a furnace such as a melting furnace.

[0002]

2. Description of the Related Art Conventionally, when a metal scrap or an ingot is melted, a metal oxide is generated, and this oxide becomes a furnace slag and accumulates in the furnace. May adhere to the corners of the bottom of the furnace. In this case, in order to improve the purity of the molten metal and to maintain the capacity in the furnace, it is necessary to take out the furnace slag in the furnace, and two methods are known as methods for taking out the furnace slag.
First, one method is to insert a long rod into the furnace through the work opening formed in the upper part of the side wall of the furnace without lowering the temperature of the furnace, and the worker uses the long rod to clean the furnace slag. It is a method of scraping. In addition, another method is to lower the temperature in the furnace sufficiently,
It is a method of peeling the furnace slag from the bottom of the furnace using a hammer drill or various hand tools and discharging it to the outside of the furnace.

[0003]

However, in any of the above-mentioned methods, a long rod, a hammer drill,
Since the furnace slag was peeled off using various hand tools, the removal work was inefficient, the work load was large, the work time was long, and the work environment was poor. In particular, when lowering the temperature in the furnace, there is a problem that the furnace slag adheres to the furnace as the temperature in the furnace decreases and it takes a long time to remove the furnace slag.

The present invention effectively solves the above problems, and an object of the present invention is to provide a furnace slag removing apparatus which shortens the furnace slag separation work time and improves the furnace slag removal work efficiency and the like. .

[0005]

In order to solve at least one of the above problems, a furnace slag removing apparatus of the present invention has an apparatus body for removing a furnace slag adhering to the bottom of a furnace such as a melting furnace. The apparatus main body includes a cutter for peeling off the furnace slag attached to the furnace, a scraper for moving the furnace slag in the furnace to one place, and an elevating means for vertically elevating the cutter and the scraper, and these cutters. The means for moving the scraper and the scraper in a substantially horizontal direction and the rotating means for rotating the scraper and the cutter in a substantially horizontal plane are the means for solving the above problems.

The cutter and the scraper may have a cooling mechanism for cooling them. The furnace may be provided with traveling means for moving the apparatus body. A discharging means for discharging the slag inside the furnace to the outside may be arranged near the apparatus main body.

[0007]

The furnace slag removing apparatus of the present invention removes the furnace slag attached to the bottom of a furnace such as a melting furnace by the main body of the apparatus. In this device body, the furnace slag attached to the furnace is peeled off by a cutter, and the furnace slag is moved to one place by a scraper. These cutters and scrapers move up and down in the vertical direction by the lifting means, move in a substantially horizontal direction by the moving means, and move along the inner peripheral surface of the furnace by the turning means, thereby moving throughout the furnace. .

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the furnace slag removing apparatus of the present invention will be described below with reference to the drawings. As shown in FIG. 1, reference numeral 1 is a furnace slag removing device, and this furnace slag removing device 1
Has a device body 10 for removing a furnace slag attached to the bottom of the furnace 2 such as a melting furnace, and a traveling rail 3 laid near the furnace 2 for moving the device body 10 above the furnace 2. Here, as the furnace 2, an open top type cylindrical furnace with a bottom is used.
A lid 4 that can be opened and closed is placed on the upper end of the side wall. Two traveling rails 3, at a position that straddles the upper end of the furnace 2,
3 are laid side by side. Mounted on the traveling rails 3 and 3 are the apparatus main body 10 and a cover crane 5 for lifting and moving the lid portion 4 of the furnace 2.

As shown in FIGS. 2 to 3, the apparatus main body 10 is mounted on the traveling frames 11 mounted on the two traveling rails 3 and 3, respectively, and is attached to the traveling frame 11 and inserted into the furnace 2. A cleaner frame 12 is provided. The traveling frame 11 includes a traveling body (not shown) such as an electric motor for moving the traveling frame 11 along the two traveling rails 3 and 3, and the cleaner frame 12 in a substantially vertical direction along the guide rail 14a. First elevating means 14 for elevating and lowering are attached. Here, the traveling means is composed of the traveling body and the traveling rails 3 and 3. However, the traveling means may be constituted by a crane that directly hangs and suspends the apparatus body 10 on the furnace 2. Alternatively, the traveling bodies may be combined.

The cleaner frame 12 includes first elevating means 14 for elevating and lowering the cleaner frame 12, and rotating means 15 connected to the first elevating means 14 for rotating the cleaner frame 12 in a substantially horizontal plane. And is suspended from the traveling frame 11. The cleaner frame 12 has a scraper 1 for removing the furnace slag attached to the furnace 2.
6 is attached to one end, and a cutter 20 for separating the furnace slag in the furnace 2 is attached to the other end.

The cleaner frame 12 and the scraper 16 have a second moving means 1 for moving the scraper 16 in a substantially horizontal direction along the cleaner frame 12.
7 and second elevating means 18 attached to the end of the second moving means 17 for moving the scraper 16 in a substantially vertical direction. Further, between the cleaner frame 12 and the cutter 20, there is provided a third elevating means 21 for elevating the cutter 20 substantially within a vertical plane, and the cutter 2.
The third moving means 22 for moving 0 along the cleaner frame 12 is attached.

As shown in FIGS. 4 to 5, the scrapers 16 and the cutter 20 are provided with cooling mechanisms 30 and 31, respectively, on rods 16a and 20a for supporting them. The cooling mechanisms 30 and 31 include cooling paths 30 formed in rods 16a and 20a having hollow interiors.
a, 31a, cooling hoses 30b, 31b for feeding a cooling medium such as cooling air to the cooling passages 30a, 31a, and outer peripheral surfaces of the rods 16a, 20a.
Cooling hole 30 for blowing cooling air from 31a to the outside
c and 31c. Here, the cooling holes 30c and 31c near the tips of the scraper 16 and the cutter 20 are provided.
Has an opening formed obliquely upward from the inside to the outside in order to prevent the cooling air from directly contacting the furnace slag and cooling and fixing the furnace slag.

Here, as the first elevating means 14,
As shown in FIG. 2, a hydraulic cylinder 14c, a sprocket 14d attached to one end of the hydraulic cylinder 14c and moving in a substantially horizontal plane, and the sprocket 1
4d and has a chain 14e connected to the cleaner frame 12 at one end. The other end of the chain 14e is connected to the traveling frame 11. Therefore, by moving the hydraulic cylinder 14c in a substantially horizontal direction, the sprocket 14d is moved horizontally and the chain 1
The cleaner frame 12 is rolled up by moving 4e in the horizontal direction.

A hydraulic motor is used for the second elevating means 18 and the third elevating means 21 via a speed reducer, and a hydraulic cylinder is used for the second moving means 17 and the third moving means 22. A cylinder, chain, sprocket, guide rail, etc. may be used. A hydraulic motor for rotating the cleaner frame 12 using a speed reducer is used as the rotating means 15. Since this hydraulic motor has a higher cooling capacity than the electric motor, it is preferably used for the rotating means 15.

Further, the apparatus main body 10 is continuously provided with a discharging means 40 for discharging the furnace slag which is peeled off by the cutter 20 and moved to one place by the scraper 16 to the outside. The discharging means 40 is not particularly limited, but as shown in FIG. 6, for example, a pair of buckets 41, 41 for scooping up the furnace slag collected in one place in the furnace 2 and a crane for moving the buckets 41, 41 up and down. And discharging means 42 for discharging, etc., opening and closing means 43 such as an electric winch for lifting and opening a pair of buckets 41, 41, and these buckets 41, 41,
It is also possible to have a discharging elevating means 42 and a discharging frame 44 to which an opening / closing means 43 is attached. The discharge frame 44 is placed on the traveling rail 3 and moves along the traveling rail 3.

Further, around the cleaner frame 12,
In order to prevent the rotating means 15, the second moving means 17, and the third moving means 22 from being heated, a heat insulating box (not shown) in which heat insulating materials are assembled in a box shape is attached. In this heat insulating box, the cooling hoses 30b and 31 of the cooling mechanisms 30 and 31 are provided.
Another cooling hose branched from b is provided. By attaching the heat insulation box to the cleaner frame 12 in this manner, the CP attached to the cleaner frame 12
It is possible to protect electronic components such as U, and further, by blowing cooling air to the electronic components from another cooling hose, it is possible to prevent the electronic components from being cooled by the heat from the furnace 2.

Using the furnace slag removing apparatus 1 as described above, a furnace 2
The work for removing the slag inside will be explained. First, the cover crane 5 lifts the lid 4 from the furnace 2 to move the lid 4, and the traveling body is operated to move the apparatus main body 10 along the traveling rail 3 to above the furnace 2. Next, the cleaner frame 12 is lowered by the first elevating means 14 and inserted into the furnace 2. In this cleaner frame 12, the cutter 20 is moved down by the third elevating means 21. Next, the cutter 20 is moved to the vicinity of the corner of the bottom of the furnace 2 by the third moving means 22.

Here, the cutter 20 is operated, and the rotating means 15 is also operated to separate the furnace wall, the furnace bottom and the furnace slag at the corner of the furnace bottom by the cutter 20. The scraper 16 was brought closer to the furnace bottom corner by the second moving means 17, and the furnace slag that had been peeled off by the cutter 20 was removed.
The scraper 16 collects it in one place of the furnace 2 and discharges it to the outside by a discharging means. Of course, the peeling work of the cutter 20 and the moving work of the scraper 16 may be performed at the same time. At this time, the furnace slag may be peeled off by the scraper 16 so that the furnace slag in the furnace 2 is removed by the scraper 16
Since it can be peeled off with the cutter 20, the work efficiency of peeling off the furnace slag can be improved.

If the furnace 2 has a circular cross-section, the furnace slag at the bottom corner of the furnace can be removed by rotating the cutter 20 and the scraper 16 about the center of the circle. Further, when the sectional shape of the furnace 2 is a square shape, the rotating means 15 is operated and the second moving means 17 and the third moving means 22 are operated, whereby the furnace 2
Along the bottom corner of the scraper 16, cutter 2
You can move 0. That is, even if the cross-sectional shape of the furnace 2 is circular, rectangular, elliptical, or the like, by finely operating the rotating means 15, the second moving means 17, and the third moving means 22, respectively, The scraper 16 and the cutter 20 can be moved along the bottom corner.

Next, the work of discharging the furnace slag is performed. First, the discharging frame 44 is moved above the furnace 2 along the traveling rail 3, and then the pair of buckets 41, 41 is suspended in the furnace 2 by the discharging elevating means 42. At this time,
The pair of buckets 41, 41 is opened by the opening / closing means 43. Next, when the pair of buckets 41, 41 moves onto the furnace slag, the wire is gradually unwound from the electric winch of the opening / closing means 43, and the pair of buckets 41, 41.
Close and scoop up the furnace slag collected in one place. The pair of buckets 41, 41 is lifted upward in a closed state, the discharge frame 44 is moved to the outside of the furnace 2 along the traveling rail 45, and the pair of buckets 41, 41 is suspended by the discharge lifting means 42. , And then a pair of buckets 41,
The furnace slag is discarded outside the furnace 2 by opening 41.
Thus, the furnace slag is removed from the furnace 2.

According to such a furnace slag removing apparatus 1, the apparatus main body 10 for removing the furnace slag adhering to the bottom of the furnace 2 such as a melting furnace includes a cutter 20 for peeling the furnace slag from the furnace 2 and this cutter. Third lifting means 2 for moving 20 in a substantially vertical direction
1 and the third moving means 22 for moving the cutter 20 in a substantially horizontal direction, the cutter 20 can be moved over the entire inside of the furnace 2, and not only the bottom of the furnace 2 and the furnace wall, but also the furnace The furnace slag at the bottom corner can be peeled off by the cutter 20. And the device body 1
0 is a scraper 16 for moving the furnace slag in the furnace 2 to one place, a first elevating means 14, a second elevating means 18 for elevating the scraper 16 in a substantially vertical direction, and a scraper 16 in a substantially horizontal direction. Second moving means 17
Since the scraper 16 can be moved throughout the furnace 2, the scraper at the bottom corner of the furnace 2 can be gathered in one place. Furthermore, the device body 10
Has a rotating means 15 for rotating the cleaner frame 12 in a substantially horizontal plane, the cutter 20 and the scraper 16 can be rotated by the rotating means 15 along the inner peripheral surface of the furnace 2. The furnace slag can be removed over the entire bottom corner of 2.

Thus, the cutter 20 and the scraper 1
Since 6 and 6 can be moved into the entire furnace 2, the scraps peeled off by the cutter 20 are removed by the scraper 16 from the furnace 2
It can be moved to one place inside and collected, the furnace 2 is emptied, the worker does not have to remove the furnace slag from the furnace 2 using a long rod, a hammer drill, etc. It can be done automatically, and there is no need to reduce the temperature of the furnace 2. That is, conventionally, it took 5 days or more to lower the temperature of the furnace 2 and remove the furnace slag adhered to the furnace 2. In the present application, the cutter 20 and the scraper 16 automatically remove the furnace slag. Since it is peeled off, the furnace slag can be peeled off even at a high temperature of about 600 ° C. Further, since this furnace slag is not fixed to the furnace 2 due to the high temperature, it can be peeled off in about 30 minutes. Therefore, since the furnace slag can be separated from the high temperature furnace 2 in a short time, the workability of separating the furnace slag can be improved, and the period for lowering the temperature of the furnace 2 is unnecessary, and the furnace slag separation work time can be shortened. The furnace 2 can be operated almost continuously. Furthermore, since the worker does not directly perform the furnace slag removal work, the health and safety of the worker can be improved.

Further, since the scraper 16 and the cutter 20 have the cooling mechanisms 30 and 31, even when the temperature of the furnace 2 is high, the scraper 16 and the cutter 2 are provided.
0 and 0 can be put in the furnace 2 to remove the furnace slag in the high temperature furnace 2. Therefore, the cutter 20 and the scraper 16 can be operated without lowering the temperature of the furnace 2.
It is possible to shorten the period for removing the slag and to safely operate these in the high-temperature furnace 2.

Further, since there is a traveling rail 3 for moving the apparatus main body 10 into the furnace 2, and a traveling body for moving the apparatus main body 10 along the traveling rail 3 is provided in the apparatus main body 10, the apparatus main body is provided. 10 can be self-propelled along the traveling rail 3. Therefore, it is possible to eliminate the need for a worker to insert a hand tool such as a long rod and a hammer drill into the furnace 2 through the work port, and it is possible to improve the safety in the work of removing the furnace slag.

Since the device body 10 is provided with the discharging means 40 for discharging the furnace slag in the furnace 2 to the outside, the furnace slag can be discharged from the discharging means 40 to the outside. Therefore, the work of separating, moving, and discharging the slag can be continuously and automatically performed, and the workability of removing the slag can be improved. Therefore,
The device body 10 includes a cutter 20, a third lifting means 21, a third moving means 22, a scraper 16, and a first lifting means 1.
4. Since the second elevating means 18 and the discharging means 40 are provided, the separation and removal work of the furnace slag can be continuously and automatically performed. For this reason, it is possible to eliminate the need for a worker for the work of peeling and removing the furnace slag, so that the health and safety of these works can be further improved.

[0026]

As described above, according to the furnace slag removing apparatus of the present invention, the furnace slag adhering to the bottom of a furnace such as a melting furnace is removed by the apparatus body. The main body of the apparatus is to move the cutter and scraper through the entire furnace by using the lifting means, the moving means and the rotating means, and bring the cutter into contact with the furnace slag attached to the furnace, and peel the furnace slag from the furnace. By moving the slag with a scraper, the slag in the entire furnace can be moved to one place. Therefore, it is not necessary for the worker to peel off the furnace slag from the furnace by lowering the temperature in the furnace and using a long rod, a hammer drill or the like, and the furnace slag peeling work can be automatically performed. Therefore, since the furnace slag can be removed from the high-temperature furnace, the furnace slag that is not stuck to the furnace can be removed, the furnace slag peeling workability can be improved, and it is not necessary to lower the temperature of the furnace. The work time for removing slag can be shortened. Furthermore, since the furnace slag is automatically peeled off, it is possible to improve health and safety such as infiltration of lungs.

As long as the cutter and the scraper have a cooling mechanism for cooling them, even in a high temperature furnace,
The cooling mechanism cools these cutters and scrapers,
Since these prevent the temperature from becoming high in the furnace, the furnace slag in the high temperature furnace can be removed. For this reason, since the furnace slag that is not stuck to the furnace can be removed, the furnace slag removal workability can be improved, and the furnace slag removal time can be shortened.

If the furnace is provided with a traveling means for moving the apparatus body, the apparatus body can be self-propelled. Therefore, it is not necessary for a worker to insert a hand tool such as a long rod into the furnace, and safety in the furnace slag removal work can be improved. By disposing a discharge means for discharging the furnace slag in the furnace to the outside in the vicinity of the main body of the apparatus, it is possible to continuously and automatically perform the separation and discharge work of the furnace slag, further improving the workability of the separation of the furnace slag. The effect that it can improve can be produced.

[Brief description of drawings]

FIG. 1 is a side view showing an entire furnace slag removing apparatus of the present invention.

FIG. 2 is a side view showing the furnace slag removing apparatus of FIG.

FIG. 3 is a plan view showing the furnace slag removing device of FIG. 2.

FIG. 4 is a front view showing a cooling mechanism of a scraper.

FIG. 5 is a front view showing a cooling mechanism of a cutter.

FIG. 6 is a front view showing a discharging unit.

[Explanation of symbols]

1 Furnace slag removal device 3 running rails 10 Device body 14 First lifting means 15 Rotating means 16 scrapers 17 Second moving means 18 Second lifting means 20 cutter 21 Third lifting means 22 Third means of transportation 30 ・ 31 Cooling mechanism 40 Ejection means

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masato Iwamiya, 2-4-1, Nishishinjuku, Shinjuku-ku, Tokyo Within Misawaban Co., Ltd. (72) Inventor, Akira Suzuki 4--12, Narashino, Funabashi, Chiba Pref. Motolight Metal Co., Ltd., Funabashi Plant (72) Inventor, Takamichi Muratani, 4-12-2 Narashino, Funabashi, Chiba Prefecture Nihon Light Metal Co., Ltd., Funabashi Plant, (72) Shoji Nakano, 4-chome, Narashino, Funabashi, Chiba Prefecture No. 2 Nihon Light Metal Co., Ltd., Funabashi Plant (72) Inventor Norio Katayose 4-122 Narashino, Funabashi City, Chiba Prefecture Nihon Light Metal Co., Ltd., Funabashi Plant (72) Tadayoshi Sato 4-chome Narashino, Funabashi, Chiba Prefecture 12-2 Nihon Light Metal Co., Ltd. Funabashi Plant (72) Inventor Masao Omori 4-12-2 Narashino, Funabashi City, Chiba Nihon Light Metal Co., Ltd. Inside the Funabashi Plant (56) Reference JP-A-6-174380 (JP, A) JP-A-61-114083 (JP, A) Actually open 4-110400 (JP, U) Special table 4-500554 (JP, A) A) (58) Fields surveyed (Int.Cl. ⁷ , DB name) F27D 23/02

Claims (4)

(57) [Claims] 1. A device main body for removing furnace slag adhering to the bottom of a furnace such as a melting furnace, wherein the device main body is provided with a cutter for removing the furnace slag adhering to the furnace, and a furnace slag inside the furnace. A scraper to be moved to one place, an elevating means for elevating and lowering the cutter and the scraper in a substantially vertical direction, a moving means for moving the cutter and the scraper in a substantially horizontal direction, and the scraper and the cutter. And a rotating means for rotating the furnace in a substantially horizontal plane. 2. The furnace slag removing device according to claim 1, wherein the cutter and the scraper have a cooling mechanism for cooling them. 3. The furnace slag removing device according to claim 1, wherein
A furnace slag removing apparatus, wherein the furnace is provided with a traveling means for moving the apparatus body. 4. The furnace slag removal device according to claim 1, wherein:
A furnace slag removing apparatus, characterized in that discharge means for discharging the furnace slag in the furnace to the outside is arranged near the apparatus main body.