JPH07305966A - Water-jacketed launder - Google Patents

Abstract

PURPOSE:To enable preventing fusion damage at the downstream end of a bored water-jacketed launder by providing a main water channel parallel to the flow of a molten material and a subsidiary water channel parallel to the end face of and at the downstream end of the water-jacketed launder. CONSTITUTION:In a jacketed launder 1 with a horseshoe cross section, which is a cast plate, rolled product, or forged product of copper or copper-alloy, win water channels 3 are bored in parallel with the flow of a molten material. A subsidiary water channel 4 is bored at the downstream end of the jacketed launder 1 in parallel with the end face. By virtue of the subsidiary water channel 4 the distance L between the end of the water channels and the end face of the jacketed launder 1 can be made as short as 10mm. As a result, fusion damage to the jacketed launder 1 on the side of the lower end can be prevented. The main water channels 3 provided parallel to the flow of the molten material prevent fusion damage in the middle of the body of the jacketed launder 1.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water-cooled jacket gutter made of copper or a copper alloy for flowing a river or kalami produced in a copper smelting process.

[0002]

2. Description of the Related Art Conventionally, copper smelting Kawa and Karami (hereinafter referred to as "melt") have been washed by using a gutter in which a carbon gutter made of fired carbon is set in an iron casing. Due to the poor wettability between the melt and the carbon, it is relatively easy to separate the solidified melt from the carbon trough that has been flushed with the melt while the carbon is new. However, since the thermal conductivity of carbon is good, the gutter becomes extremely hot during the flow of the molten material, and the separation work thereof requires a great deal of labor under high heat.

As the carbon gets older, the surface of the carbon becomes uneven due to the molten material, making it difficult to separate the carbon. Further, when the melting of carbon progresses, the carbon is replaced, but since the carbon is heavy, there is a risk that the worker may hurt his back.

Recently, as a countermeasure against these problems, a water cooling jacket gutter made of copper has been introduced in place of the carbon gutter. There are roughly two types of water-cooling jacket gutters, one is a cast jacket gutter that secures a water channel by casting copper into a copper tube, and the other is a hole drilling process that drills a hole in a copper plate or copper ingot to form a water channel. It is a jacket gutter.

The most important point of the water-cooled jacket gutter is how to protect the copper of the jacket body from being damaged by the molten material. The hole-jacketed gutter is the main body in the hole-jacketed gutter rather than the cast jacket gutter. The rolled sheet or forged sheet has better cooling efficiency than the cast sheet, so that the jacket body is less likely to be melted and the life and safety of the jacket gutter are excellent.

Generally, the maximum length of one water-cooling jacket gutter that can be manufactured is about 1.5 m whether it is a casting jacket or a hole-jacketing jacket. Hereinafter, for the sake of simplicity, it is simply referred to as a jacket gutter). This is shown in FIGS. 4 and 5.

FIG. 4 (a) is a front view of the jacket gutter, FIG.
(B) is a side view of a gutter constructed by connecting a plurality of jacket gutters. FIG. 5 is a plan view of the gutter. Reference numeral 1 is a jacket gutter, and 2 is a water channel in which the jacket gutter 1 is draped, through which cooling water flows. Such a melt flow trough is configured by connecting a plurality of jacket gutters 1, and generally, a plurality of water channels 2 are provided in parallel with each other in the longitudinal direction of the jacket gutter 1. However, since it is necessary to connect the jacket gutter 1 and the jacket gutter 1 as described above, the water channel 2 cannot be provided to the end surface of the jacket gutter as shown in FIG. 4B, and an external water channel such as a hose is taken. Therefore, the distance L between the tip of the water channel and the end face of the jacket gutter could not be substantially less than 45 mm.

[0008]

The connection of the jacket gutter is such that the jacket gutter on the downstream side is slightly lowered from the jacket gutter on the upstream side so that the flow of the molten metal is not disturbed by the reverse step, It is difficult for the melt to come into contact, and the damage is the same as in the center part of the jacket gutter, but since the lower end has a positive step, the force that the melt falls to the jacket gutter on the downstream side is applied, so that the melt damage easily progresses. was there.

SUMMARY OF THE INVENTION An object of the present invention is to make it possible to prevent the downstream end of a water-cooled jacket gutter, particularly a hole-processed water-cooled jacket gutter, from being melted.

[0010]

In order to solve the above problems, the present invention relates to a copper smelting Kawa formed by directly casting a cooling water channel on a cast plate of copper or copper alloy or a rolled product or a forged product. Alternatively, in the water cooling jacket gutter for Karami, a main water channel is provided in parallel with the flowing direction of the molten metal, and a sub-water channel is provided at least at the downstream end of the jacket gutter in parallel with the end face thereof. It is in.

[0011]

In the water-cooling jacket gutter of the present invention constructed as described above, the distance L between the end of the water channel and the end face of the jacket gutter is up to 10 mm due to the auxiliary water channel provided in parallel to the downstream side end of the jacket gutter. Can be shortened. This effectively prevents the bottom gutter of the jacket gutter from melting. Further, the main water channel provided in parallel with the flowing direction of the molten material prevents the central portion of the jacket gutter body from being melted.

[0012]

FIG. 1 shows a first embodiment of the present invention, FIG. 2 shows a second embodiment, and FIG. 3 shows a third embodiment. 1, 2, and 3, (a) is a side view, (b) is a front view, and (c) is a plan view.

First, a first embodiment will be described with reference to FIG. FIG. 1 shows a jacket gutter 1 having a horseshoe-shaped cross section, and a main water channel 3 hangs in the longitudinal direction of the jacket gutter 1, that is, parallel to the flow direction of the melt. Then, when used, the auxiliary water channel 4 is laid so as to be parallel to the end face on the downstream side. As for the processing method, first, the sub-water channel 4 is gargled on a flat copper plate, and after processing into a horseshoe shape, the main water channel 3 is gargled.

FIG. 2 shows a jacket gutter 1 having an inverted trapezoidal cross section, which is used when there is a bent part in the entire drain gutter, and the tip of the jacket gutter 1 has an oblique end face for forming a bent part. . In this case as well, the sub-water channel 4 hangs parallel to the bottom of this end face.

As is apparent from FIGS. 1 and 2, the sub-drain 4
Is parallel to the end face of the jacket gutter, so
The water supply / drainage ends are located on both sides of the jacket gutter and are separated from the water supply / drainage ends of the main waterway 3, so L is 10 from the end surface.
The sub-water channel 4 can be provided at a position of about mm. Therefore, it is possible to sufficiently cool the end portion of the jacket gutter, which has not been possible in the past, and prevent local melting.

The third embodiment of FIG. 3 is a case in which a jacket channel 1 having a rectangular cross section is provided with a water channel 5 which connects a tip sub-water channel and a central main water channel. This is to reduce the amount of cooling water. Yes, the effect of preventing damage is the same as when the sub-waterway is independent.

Although the embodiments have been described above, the present invention is not limited to these embodiments, and the main water channel is provided parallel to the flowing direction of the molten metal and the sub water channel parallel to the end face of the jacket gutter is provided as claimed. If is provided, a similar effect can be obtained.

[0018]

As described above in detail, according to the water-cooling jacket gutter of the present invention, it is possible to suppress the melting of the end portion, which conventionally determines the life of the water-cooling jacket gutter. Therefore, the life of the water cooling jacket gutter is doubled.

[Brief description of drawings]

FIG. 1 is a diagram showing a first embodiment of the present invention.

FIG. 2 is a diagram showing a second embodiment of the present invention.

FIG. 3 is a diagram showing a third embodiment of the present invention.

FIG. 4 is a front view of a conventional jacket gutter and a side view of a gutter configured by connecting a plurality of the gutters.

FIG. 5 is a plan view of a gutter.

[Explanation of symbols]

 1 jacket gutter 2 waterway 3 main waterway 4 auxiliary waterway 5 waterway connecting main waterway and subwaterway L distance between waterway and jacket gutter end face

Claims (1)

[Claims] 1. A water-cooling jacket gutter for copper smelting Kawa or Karami, which is formed by directly casting a cooling water channel on a copper or copper alloy cast plate, a rolled material or a forged material,
A water-cooled jacket gutter, characterized in that a main water channel is provided in parallel with the flowing direction of the melt, and a sub-water channel is provided at least at the downstream end of the jacket gutter in parallel with the end face thereof.