JP2002332511A - Trough for molten metal and slag - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a trough for molten metal and slag capable of constantly connecting runner members to each other in a tightly fitting manner even when the plurality of molten runner members formed of a refractory are expanded or contracted. SOLUTION: The trough 1 for molten metal and slag is installed on a base to allow the molten metal and slag to flow on a runner 11, and comprises a plurality of runner members 12 formed of the refractory with an upper side thereof opened, and disposed along the flowing direction of the molten metal and slag to form the runner 11, and a coil spring 30 as a tightly connecting member to connect the runner members 12 adjacent to each other in a constantly and substantially tightening manner. Thus, even when the runner member 12 is expanded or contracted by the temperature change, the runner members 12 can be connected to each other in a tightening manner.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to a gutter for molten metal and slag.

[0002]

2. Description of the Related Art Conventionally, a molten metal / slag gutter for flowing molten metal / slag is provided with a plurality of molten metal / slag gutters 100 shown in FIG. There is a type in which a gutter 11 is formed by arranging a gutter member 12 made of castable refractory along the flow direction of molten metal / slag. Here, only the gutter member 12 arranged on the most upstream side is fixed to the base, and the other gutter members 12 are not fixed. In addition, mortar is injected between adjacent runner members 12 to join the runner members 12 together. In the case of slag, it may be applied at an empty space. The hot water member 12 is composed of one or a combination of two or more of alumina, silicon carbide, carbon, magnesia, etc., and is charged into a mold having a predetermined shape, for example, a mixture using cement as a binder. It is a castable refractory molded. The molten metal / smelt sent from the upstream side (left side in the drawing) of the molten metal / slag gutter is configured to flow in the downstream direction (right side in the drawing) along the molten metal groove 11.

[0003]

The molten metal or slag flowing in the gutter 11 has a temperature close to the refractory temperature of the castable refractory forming the gutter member 12, and the gutter member 12 is molten metal or slag. Since the heat expands outward from the center due to the heat conducted from the slag (the direction of expansion is indicated by the arrow in FIG. 7B), each gutter member presses each other at the joint. At this time, the gutter member 12 arranged at the most upstream side
Since the other gutter members 12 are not fixed to the base,
As shown in FIG. 7 (b), when each gutter member 12 moves downstream along with the expansion, the gutter 11 extends downstream by the total amount of expansion of each gutter member 12. Become.

On the other hand, when the flow of the molten metal / slag is stopped and the temperature of the gutter member 12 decreases, each gutter member 12 gradually contracts toward its respective center direction (the direction of shrinkage is shown in the drawing). 7 (c) indicated by an arrow). At this time, the gutter member 12
The mortar is injected into the joints between the joints, and the joints are joined. However, since the joining strength is low, the end faces of the gutter members 12 may be separated from each other as shown in FIG. . In particular, when the gutter for molten metal and slag started to be used, since the castable refractory gutter member 12 was not fired at all, the amount of expansion and contraction due to temperature change was large, and Large gaps are likely to occur.

An object of the present invention is to provide a gutter for molten metal and slag which can always connect the respective gutter members in close contact even when a plurality of gutter members made of refractory expand and contract. Issues to be solved.

[0006]

In order to achieve this object, a gutter for molten metal and slag according to claim 1 is provided on a base so that the molten metal and slag flow on a gutter. In particular, a plurality of gutter members formed of a refractory having an open upper surface, and arranged along the flow direction of the molten metal / slag to form the gutter, and adjacent to each other, And a contact connecting member for connecting the hot water groove members in a substantially close contact state at all times.

When the temperature of the gutter member rises due to heat conduction due to the flow of the molten metal / slag, the adjacent gutter members expand and press against each other, so that they slide on the base in the arrangement direction, The length of the gutter is extended. Next, although each runner member contracts as the temperature decreases due to the stoppage of the flow of the molten metal / slag, the close connection member always connects the adjacent runner members in a substantially close contact state. Each gutter member slides on the base again to reduce the length of the gutter,
Finally, it returns to the initial state. Therefore, when the plurality of gutter members forming the gutter expand and contract, the connection of the gutter members can be always maintained without disconnecting the gutter members.

According to a second aspect of the present invention, in the gutter for molten metal and slag, the close connection member is made of an elastic body, one end of which is connected to at least one gutter member, and the other end of which is connected to another gutter. It is characterized by being connected to a gutter member.

Therefore, the close connection member made of an elastic body is
Since at least one gutter member is connected to another gutter member, adjacent gutter members can always be connected in a substantially close contact state with a very simple configuration.

According to a third aspect of the present invention, in the gutter for molten metal and slag, the close connection member is made of an elastic material, one end of which is connected to at least one gutter member, and the other end of which is the base. Is connected to the terminal.

Therefore, the close connection member made of an elastic body is
Because at least one gutter member and the base are connected,
With an extremely simple configuration, the adjacent hot water gutter members can always be connected in a substantially close contact state.

Further, a gutter for molten metal and slag according to a fourth aspect is characterized in that a sliding member is provided between the plurality of molten metal members and the base.

Therefore, the slidability of each gutter member on the base is improved, and each gutter member expands and contracts due to a temperature change.
It can slide and move smoothly on the base when contracted.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a gutter for molten metal and slag embodying the present invention will be described with reference to the drawings.

First, a gutter 1 for molten metal and slag of a first embodiment will be described with reference to FIGS.

As shown in the plan view of FIG. 1, the molten metal / slag gutter 1 has a flowing direction of the molten metal / slag (the direction of arrow A).
And a plurality of gutter members 12 that are connected along the groove to form a gutter 11.

FIG. 3 is a sectional view taken along the line BB in FIG. The hot water groove member 12 includes a main body 12a and the main body 12a.
and a frame portion 12d made of metal such as iron, which covers approximately three-quarters of the bottom portion 12b and the side wall 12c from below, and has a substantially U-shaped cross section that expands upward. The main body 12a is composed of one or a combination of two or more of alumina, silicon carbide, carbon, magnesia, and the like. For example, a mixture using cement as a binder is charged into a mold having a predetermined shape. Molded
It is a castable refractory that has not been fired.

As shown in FIG. 3, the gutter member 12 is mounted on a sliding layer 12j made of sand laminated on a base. The reason why the sliding layer 12j is provided between the lower surface of the gutter member 12 and the base is to facilitate sliding movement on the base when the gutter member 12 expands and contracts due to a temperature change. It is. Note that the most upstream (left in the drawing) gutter member 12 does not slide since it is fixed to the base. On the other hand, the runner members 12 other than the furthest upstream runner member 12 (center and right in the drawing) are not fixed to the base and can slide. Here, the sliding layer 12j
Constitute the sliding portion of the present invention.

FIG. 2 shows details of the vicinity of the joint of the upper gutter member 12, wherein (a) is a front view of the downstream end,
(B) is a side view near the joint, and (c) is a front view of the upstream end. The flow direction of the molten metal / slag is the direction indicated by arrow A in FIG.
In (b), the left is the upstream side and the right is the downstream side.

The frame portion 12d is shown in FIGS. 2 (a) to 2 (c).
As shown in the figure, at the upstream end 12e of the hot water groove member 12, a convex portion 12f projecting about 50 mm horizontally is formed.
The downstream end 12g has a recess 12h that is horizontally recessed by about 50 mm. Then, the two gutter members 12
When connecting the two, the concave portion 12d of the downstream end portion 12g of the hot groove member 12 arranged on the upstream side and the convex portion 12c of the upstream end portion 12e of the hot groove member 12 connected on the downstream side are related. Are adapted. Mortar is injected between the downstream end 12g of the upstream gutter member 12 and the upstream end 12e of the downstream gutter member 12, and a mortar layer 12i having a thickness of about 2 mm is provided. Is formed, and the mortar layer 12i seals between the two adjacent hot water groove members 12.

As shown in FIG. 1, coil springs 30 are provided on both side surfaces of the frame portion 12d of the hot water groove member 12. One end of the coil spring 30 is connected to one adjacent gutter member 12, and the other end is connected to the other gutter member 12. Therefore, the molten metal members 12 adjacent to each other in the flow direction of the molten metal / slag are formed by the coil springs 30.
Are connected to each other. The coil spring 30
Constitute the close connection member or the elastic body of the present invention.

In the gutter 1 for molten metal and slag shown in FIGS. 1 to 3, the gutter member 12 has a length in the longitudinal direction (flow direction of the molten metal and slag) of 2500 mm and an upper end. The width is set to about 950 mm, the width of the lower end is set to about 760 mm, and the weight is about 3000 kg.

The gutter member 12 has a bottom portion 12b having a thickness of about 350 mm and a side wall 12c having a minimum thickness of about 70 mm.
(Near the upper end), at most about 470 mm (near the lower end).

Next, the operation when the molten metal / slag gutter 1 expands and contracts due to a temperature change will be described.

First, in an initial state before the flow of the molten metal / slag starts, as shown in FIG. 1, the coil spring 30 has a natural length or a slightly extended state.

When the high-temperature molten metal / slag flows on the gutter 11, as shown in FIG.
The temperature of each gutter member 12 forming 1 rises and expands outward from the center of each gutter member 12 (arrows indicate the direction of expansion). The expanded gutter members 12 are pressed against each other at the respective joints, and move while sliding in the downstream direction that is not fixed to the base, and the gutter 11 moves in the downstream direction by the total amount of expansion of the respective gutter members 12. extend. Each coil spring 30
Is extended by the expansion of each gutter member 12, but since both ends of the coil spring 30 are respectively connected near the ends of the gutter member 12, the amount of displacement of the length of each coil spring is Small compared to the amount of expansion.

Next, when the flow of the molten metal / slag is stopped, as shown in FIG. 4 (b), the temperature of each runner member 12 decreases and contracts toward the center of each runner member 12. (The arrow indicates the contraction direction). At this time, the distance between one end and the other end of the coil spring 30 connected to the gutter member 12 is
, The coil spring 30 generates elastic energy. Since the gutter member 12 arranged on the most upstream side (right side in the drawing) of the molten metal / slag gutter 1 is fixed to the base and does not move, the gutter member 12 connected to the downstream side of each coil spring 30 is Then, the coil spring 30 is drawn to the upstream side while maintaining the close contact state by the elastic energy of the coil spring 30, and each of the groove members 12 finally returns to the initial position shown in FIG.

As described above, according to the gutter 1 for molten metal and slag of the present embodiment, when the melt groove member 12 expands and contracts, the connection is maintained while always maintaining the close contact state at the joining portion. There is no gap in the part.

Next, the structure and operation of a gutter 50 for molten metal and slag according to a second embodiment of the present invention will be described with reference to FIGS. The same members as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

Gutter 50 for molten metal and slag of second embodiment
As shown in FIG. 5, one end of a coil spring 30 is connected to each side surface of the gutter member 12 connected to the most downstream side, and the other end of the coil spring 30 is connected to a base. ing. Here, the connection position of the coil spring 30 on the base side is upstream (left side in the drawing) of the connection position on the hot groove member 12 side. FIG.
In the initial state shown in (1), the coil spring 30 has a natural length or is slightly extended. It should be noted that the coil spring 30 is provided only on the hot water groove member 12 located at the most downstream side.
The reason why is provided is to urge the gutter member 12 and the gutter member 12 arranged upstream from the gutter member 12 integrally to the upstream side.

When the high-temperature molten metal / slag flows on the gutter 11, as shown in FIG.
The temperature of each gutter member 12 forming 1 rises and expands outward from the center of each gutter member 12 (arrows indicate the direction of expansion). The expanded gutter members 12 are pressed against each other at the respective joints, and move while sliding in the downstream direction that is not fixed to the base, and the gutter 11 moves in the downstream direction by the total amount of expansion of the respective gutter members 12. extend. Coil spring 30
Extends in proportion to the amount of expansion of the gutter member 12.

When the flow of the molten metal / slag is stopped, as shown in FIG. 6 (b), each gutter member 12 contracts toward the center of each gutter member 12 as the temperature decreases. (The arrow indicates the contraction direction), and finally returns to the initial state length.
At this time, the coil springs 30 urge the respective gutter members 12 that have moved to the downstream side due to the expansion toward the upstream side by the elastic energy. Side, and finally return to the initial position. Therefore, the connection is maintained while maintaining the close contact state at each joint of the hot water groove member 12, and no gap is generated at the joint.

The present invention is not limited to the above-described embodiments, and various changes can be made without departing from the gist of the present invention.

For example, in the first embodiment, the adjacent hot groove members 12 are connected by the coil springs 30, respectively, but the mode of connection is not limited to this. A coil spring having a length equal to or greater than the length of the gutter member 12 is used to connect the upstream gutter member and the downstream gutter member sandwiching one or more gutter members therebetween. Is also good.

Further, in the second embodiment, the coil spring 30 is connected only to the gutter member 12 arranged at the most downstream side. However, the coil spring 30 is similarly provided to the other gutter members 12. No problem.

Further, a gutter for molten metal and slag may be formed by combining the structure of the first embodiment and the structure of the second embodiment.

In each of the above embodiments, the coil spring 3
0 is used to tightly connect the gutter members 12, but a spring other than a coil spring, for example, a plate spring or the like, or an elastic body other than a spring, for example, heat-resistant rubber, may be used. And the like. In short, what is necessary is just to comprise so that each gutter member 12 may be urged | biased to an upstream by an elastic body.

Further, a configuration may be provided in which a mechanism for urging each of the hot water groove members 12 to the upstream side using a hydraulic cylinder or the like is provided. In short, it suffices to provide a configuration for connecting the respective gutter members 12 while maintaining the close contact state when the gutter members contract after expansion.

In each of the above embodiments, the sliding portion 12j in which sand is laminated is provided on the base. However, if the sliding property of the gutter member 12 is sufficient, the sliding portion 12j may be omitted. It is possible.

Further, a sliding roller device for rotatably supporting a cylindrical body or a spherical body is provided in place of the sliding portion 12j, and each gutter member 12 is mounted on the cylindrical body or the spherical body. It may be configured. In short, a member capable of improving the slidability of the gutter member 12 may be provided.

Further, the refractory material forming the gutter member 12 is not limited to the castable refractory described above, and can be changed as appropriate according to the application.

The length, weight, etc. of each member in each of the above embodiments are merely examples, and it is a matter of course that the present invention can be implemented by appropriately changing as necessary.

[0043]

As described above, according to the present invention, in a gutter for molten metal and slag which is installed on a base and allows molten metal and slag to flow on a gutter, a fire-resistant gutter having an open upper surface. Even if a plurality of gutter members forming the gutter are expanded and contracted due to a temperature change, the close connection members are adjacent to each other even if the plurality of gutter members forming the gutter are arranged along the flow direction of the molten metal / slag. The above-mentioned hot water groove members can be always connected in a substantially close contact state.

[Brief description of the drawings]

FIG. 1 is a plan view showing a gutter for molten metal and slag according to a first embodiment of the present invention.

FIG. 2 is an explanatory view showing details of a joint of a gutter for molten metal and slag of FIG. 1;

3 is a sectional view of the molten metal / slag gutter of FIG. 1 taken along line BB.

FIG. 4 is an explanatory view for explaining the operation of the gutter for molten metal and slag shown in FIG. 1 at the time of expansion or contraction.

FIG. 5 is a plan view showing a gutter for molten metal and slag according to a second embodiment of the present invention.

FIG. 6 is an explanatory view for explaining the operation of the gutter for molten metal and slag shown in FIG. 5 at the time of expansion or contraction.

FIG. 7 is an explanatory view for explaining the configuration of a conventional molten metal / slag gutter and the operation during expansion or contraction.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Gutter for molten metal / slag, 11 ... Gutter, 12 ... Gutter member, 12j ... Sliding layer, 30 ... Coil spring, 50 ... Gutter for molten metal / slag.

 ──────────────────────────────────────────────────続 き Continued on the front page F-term (reference) 4K015 EC01 4K055 AA10 JA01

Claims (4)

[Claims] 1. A molten metal / slag gutter installed on a base and adapted to flow the molten metal / slag on a gutter, comprising a refractory having an open upper surface. A plurality of runner members forming the runner by being arranged along the flow direction; and a close connection member for connecting the runner members adjacent to each other in a substantially close contact state at all times. For molten metal and slag. 2. The contact connecting member is made of an elastic body.
The gutter for molten metal and slag according to claim 1, wherein one end of the gutter is connected to at least one gutter member, and the other end is connected to another gutter member. 3. The close connection member is made of an elastic body,
The gutter for molten metal and slag according to claim 1, wherein one end thereof is connected to at least one gutter member and the other end is connected to the base. 4. A gutter for molten metal and slag according to claim 1, wherein a sliding member is provided between said plurality of hot water groove members and said base.