JPS5852480Y2 - Steel plate slag flow gutter - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a slag flow down trough (hereinafter simply referred to as a down trough) that allows slag to flow down.

In recent years, active efforts have been made to develop methods for obtaining high-quality solidified slag by processing slag by-produced in metallurgical furnaces in a molten state.

For example, molten slag (hereinafter referred to as slag) is allowed to flow down a downflow gutter to form a slag flow, and air or steam is blown onto the slag flow flowing down from the flowdown gutter, or the slag flow is heated with a rotating drum. Equipment has been put into practical use that granulates and solidifies solidified slag by splashing, producing dense and uniform quality solidified slag.

In such a device, as the molten slag flows down, the molten slag adheres to the wall surface of the downflow gutter and solidifies, and the adhered slag gradually grows and remains in the downflow gutter. What remains is hereinafter referred to as residue).

The residue is removed periodically or at the end of a production cycle.

By the way, in order to prevent solidification of slag and protect the gutter, conventionally, the downflow gutter has generally been constructed by lining the inner surface of the gutter frame with a refractory material such as castable.

For this reason, the residue firmly adheres to the refractory and cannot be removed unless it is broken down using an air pick, etc., and this removal work not only takes an extremely long time but also generates a lot of dust from various types of pipes. I had a problem.

The present invention aims to effectively solve the above-mentioned problems, and its main purpose is to provide a drainage gutter that can easily and easily process slag and form a stable slag flow. This is a flat bottom gutter-shaped slag flow lower gutter that has a water-cooled jacket body and an opening that widens toward the end, and is rotatably attached to a gutter support device via a support shaft fixed to the center of the frame. This is a supported steel plate slag flow downspout.

Hereinafter, the present invention will be explained in detail based on examples.

FIG. 1 is a perspective view showing an embodiment of a downflow gutter based on the present invention.

In the figure, reference numeral 1 denotes a downstream gutter body (hereinafter simply referred to as the frame), which is formed from a steel plate in the shape of a flat bottom gutter.

For example, as shown in FIG. 2, the frame 1 has a water-cooling jacket structure in which a cavity 1C is formed by an inner wall plate 1a and an outer wall plate 1b, and cooling water is supplied to the cavity 1C.

In FIG. 2, reference numeral 1d indicates reinforcing ribs fixed to the cavity 1C at appropriate intervals, and has water passage holes 1d through which cooling water flows.

Further, 2 in FIG. 1 is a water supply pipe for cooling water, and 3 is a drain pipe.

A support shaft 4 is fixed to the center of the frame 1, and the support shaft 4 is rotatably supported by a gutter support device 5.

The gutter support device 5 in the embodiment shown in FIG. 1 is composed of a support frame 51, a bearing member 52 fixed to the support frame 51, and a drive device 53 for rotating the support shaft 4.

By driving the drive device 53, the support shaft 4 supported by the bearing member 52 rotates, and the frame 1 also rotates accordingly.

Of course, the gutter support device 5 is not limited to the above embodiment. For example, as shown in FIG. 3, the support shaft 4 is rotatably supported by a bearing member 52 fixed to a frame 51, and The frame 1 may be configured to be rotated using human power or a lifting device.

As described above, the downflow gutter 6 of the present invention is composed of a frame 1 having a water cooling jacket, and a gutter support device 5 that rotatably supports the frame via a support shaft 4 fixed to the center of the frame 1. The slag is within the flat bottom line (hereinafter referred to as the gutter) 60
becomes a slag flow 7 and flows down in the direction shown by arrow a.

The gutter 60 has an opening 60a on the outflow side of the slag flow 7 that is wider than an opening 60b on the inlet side, and has a structure with an opening that widens toward the end as referred to in the present invention.

In the downflow gutter 6 of the present invention, since the frame 1 is water-cooled, it has sufficient durability against high-temperature slag and can be used stably for a long period of time.

On the other hand, as shown in FIG. 4, the molten slag supplied to the gutter 60 forms a thin coagulated film 8 when it comes into contact with the inner wall plate 1a, which is at a low temperature and has a smooth surface.

The coagulated film 8 has an excellent heat insulating function, and once the coagulated film 8 is formed, it becomes a high-performance heat insulating material that prevents the molten slag from being heat removed from the frame 1 and solidifying. Protect the frame 1 from the high heat of the slag.

The coagulated film 8 maintains a balanced thickness due to heat input from the slag flow and heat removed from the frame 1, and it hardly grows.

As a result, a stable slag flow in the gutter 60 can be ensured, and the frame 1 can be effectively protected with a small amount of cooling water.

Further, the coagulated film 8 is formed immediately when the molten slag comes into contact with the inner wall plate 1a, and because it contracts slightly at that time, the adhesion force between the coagulated film 8 and the inner wall plate 1a is extremely weak.

In addition, since the frame 1 is provided with an opening that widens toward the end, when disposing of the residue, the frame 1 is rotated so that the wide outlet opening 60a is facing downward, and the frame 1 is struck with, for example, a hammer. Alternatively, by applying a slight shock or vibration by stopping the frame 1 by hitting it against a stopper, etc., the residue is easily released and falls.

Incidentally, the larger the angle of inclination of the divergence, the better the removability and falling properties of the residue, which is more effective. However, in the experience of the present inventors, the angle of inclination of the divergence is 5 to 30°. It was confirmed that the above effects could be fully exhibited.

As described above, although the present invention has a simple configuration, its practical effects are very large.

[Brief explanation of the drawing]

Each figure shows an embodiment of the present invention. Fig. 1 is a perspective view showing an embodiment of a downflow gutter, Fig. 2 is a partially sectional perspective view showing an embodiment of the water cooling jacket structure of the frame, and Fig. 3 is a perspective view showing an embodiment of the water cooling jacket structure of the frame. The figure is a perspective view showing another embodiment of the downflow gutter, and FIG. 4 is a cross-sectional structural diagram of the downflow gutter. 1... Downstream gutter body, 2... Water supply pipe, 3
...Drain pipe, 4...Support shaft, 5...
... Gutter support device, 6... Downflow gutter, 7...
...Slag flow, 8...Coagulation film.

Claims (1)

[Scope of utility model registration request] A flat-bottomed slag flow gutter with a water-cooled jacket body and a widening opening, made of steel plate and rotatably supported on a gutter support device via a support shaft fixed to the center of the frame. Slag flow down trough.