JPS5815839Y2 - Adhesive slag removal equipment - Google Patents

Description

[Detailed description of the invention] This invention removes the slag that solidifies and adheres to the front surface of the tip of the outflow gutter of molten slag when producing crushed slag by wind-pulverizing molten slag such as molten blast furnace slag and converter slag. This invention relates to a device for removing attached slag.

Recently, in order to effectively utilize molten slag, such as molten blast furnace slag and converter slag, which are generated in ironmaking and steelmaking processes in blast furnaces and converters in steel plants, the molten slag has been crushed into fine particles by wind crushing. It is also used to make wind-crushed slag.

FIG. 1 shows a schematic process diagram of the method for producing the above-mentioned pulverized slag.

That is, the molten slag in the ladle 1, which has been carried to a predetermined position by the overhead crane 2, is transferred into the tundish 3, and is passed through a nozzle connected to the blower 6 at a constant flow rate from a gutter 4 provided in the tundish 3. It will be leaked towards 5th.

As a result, the molten slag is reduced to fine particles, flies through the hood I, and becomes air-crushed slag during this process, and is accumulated in the pit 8.

However, in the process of manufacturing the air-crushed slag, when the molten slag flows out from the gutter 4, the tip of the molten slag flows through the nozzle 5.
Since the molten slag is cooled by the blasting air ejected from the gutter, the molten slag is also cooled and solidified at the tip and adheres to the front surface of the tip of the gutter.

Then, this adhered slag gradually grows and becomes larger.

In producing the above-mentioned air-crushed slag, in order to obtain homogeneous air-ground slag with uniform particle size, it is necessary to flow out the molten slag at a constant flow rate, and to blow out air from the nozzle at the optimum wind speed and volume. etc. are important, but as mentioned above, if the slag adheres to the front surface of the tip of the gutter 4, this balance will be disrupted, and there is a problem that optimum production of air-crushed slag cannot be carried out.

Therefore, conventionally, in order to remove the adhered slag A from the front surface of the tip of the gutter 4, as shown in FIG. Was.

In FIG. 1, numeral 10 is a main nozzle for blasting, and numeral 11 is an upper nozzle as well.

However, since the work for removing the adhered slag is performed in a high-temperature environment, it is not desirable in terms of safety and health, and since it is performed remotely and manually using a rod or the like, there are problems such as insufficient removal.

From the above-mentioned viewpoint, this invention provides an attached slag removal device that automatically removes the slag attached to the front end of the molten slag outflow gutter at a fixed cycle,
It is composed of a first slag removing device for removing slag attached to both sides of the front surface of the tip of the gutter, and a second slag removing device for removing slag attached to the lower part of the front surface of the tip of the gutter, and the first slag removing device removes the chips from the tip. The structure is such that the adhered slag is removed by dropping the chips by their own weight from the upper part to the lower part on both sides of the front surface of the tip of the gutter, and the second
The slag removal device is characterized in that it has a structure in which adhering slag is removed by moving a scraper using a cylinder in the width direction of the lower front surface of the tip of the gutter.

This invention will be explained with reference to examples and drawings.

FIG. 3 is a front view showing the slag removal device according to the embodiment of the present invention installed at the tip of a gutter of an air crushing manufacturing device, and FIG. 4 is a side view of the same.

In the drawings, reference numeral 12 denotes a first slag removal device, which includes a rod 14 with a tip 13 attached to its lower end, an arm 15 whose tip engages with the upper end of the rod 14 in a direction perpendicular to the rod 14; It is comprised of a rotating machine 16 that rotates the arm 15 at a constant cycle.

Two of the rods 14 are vertically slidably supported by guide members 17 at an interval equal to the distance between both sides of the front surface of the gutter tip so that the chips 13 pass in front of the front surface of the gutter tip.

A bar 18 is provided at the upper end of the rod 14 in the width direction of the gutter 4, and the tip of the arm 15 is connected to the bar 18.
The arm 15 is rotated by the rotating machine 16 in the direction of the arrow in FIG. 1 at a constant period.

The length of the rod 14 and the arm 15 is such that the length of the rod 14 and the arm 15 is such that the rod 14 has a bar 1 until the tip 13 is located at the upper part of the upper nozzle 11.
When the bar 18 and the arm 15 are disengaged from each other, the tip 13 has a length that reaches the lower front surface of the tip of the gutter, and the tip 13 is at this position. It is stopped by a stopper 19.

Since it is like this, the arm 1 is rotated by the rotary machine 16.
When the tip 5 is rotated, the tip 13 rises together with the rod 14, reaches the upper part of the upper nozzle 11, and at the same time the bar 18 and the arm 15 are disengaged, and the tip 13 falls to the lower part of the front surface of the gutter tip due to its own weight.

As a result, carbon adhering to both sides of the front surface of the gutter tip is peeled off and removed.

At this time, the impact is also transmitted to the slag adhering to the lower front surface of the gutter tip, so that the adhering slag in this area is also peeled off and removed at the same time.

The chip 13 that fell to the lower part of the front of the gutter tip is transferred to the arm 15.
further rotates and engages the descending bar 18, resulting in
It rises again to the above-mentioned position and then falls again.

This operation is periodically repeated as the arm rotates 150 times.

20 is a second slag removal device, which includes a cylinder 21 provided on one side of the lower front surface of the gutter tip;
The scraper 23 is fixed to the tip of a rod 22, and the scraper 23 is reciprocated horizontally in front of the front lower part of the tip of the gutter at a constant period by the cylinder 21.

Therefore, the slag attached to the lower front surface of the gutter tip is peeled off and removed by the scraper 23.

The first slag removal device 12 and the second slag removal device 20
Of course, it is necessary to operate the tip 13 and the scraper 23 at different timings so that they do not collide with each other.

As explained above, according to this invention, the slag adhering to the front end of the molten slag outflow gutter in the wind crushing manufacturing equipment can be automatically removed without manual intervention, so that the adhering slag can be completely and reliably removed. This brings about the extremely useful effect of ensuring stable operation of the crushing equipment.

[Brief explanation of the drawing]

Fig. 1 is a schematic process diagram of a conventional wind crushing manufacturing method, Fig. 2 is an explanatory diagram of a conventional method for removing adhered slag, and Fig. 3 shows an installation mode of the adhered slag removal device of this invention. The front view and FIG. 4 are the same side views. In the drawings, 1...Ladle, 2...Crane, 3...Tandish, 4...
・Gutter, 5...Nozzle, 6...Blower,
I...Hood, 8...Pit, 9...
...rod, 10...main nozzle, 11...
... Upper nozzle, 12 ... First slag removal device, 13 ... Chip, 14 ... Rod, 1
5... Arm 16... Rotating machine, 17
...Guide member, 18...Bar, 19
...Stock bar 20...Second slag removal device, 21...22...Rod, 23...Scraper

Claims (1)

[Claims for Utility Model Registration] A first slag removal device for removing slag attached to both sides of the front front end of a rain gutter for outflowing molten slag, and a second slag removal device for removing slag attached to the lower front front end of the gutter. and a slag removing device, the first slag removing device having a tip at its lower end, such that the tip passes in front of the front end of the gutter at an interval equal to the distance between both sides of the front end of the gutter. It consists of two rods that are vertically slidably supported, an arm whose tip engages with the upper end of the rod in a direction perpendicular to the rods, and a rotating machine that rotates the arms at a constant cycle; The second slag removal device is characterized by comprising a scraper that reciprocates horizontally in front of the front lower part of the tip of the gutter at a constant period by a cylinder provided on one side of the lower front of the tip of the gutter. Adhesive slag removal equipment.