JPS63169476A - Smelting furnace - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Application Field" The present invention relates to a smelting furnace having a rising flue and provided with a lance pipe.

``Prior art'' Conventionally, the above-mentioned smelting furnaces are as shown in Figures 4 and 5.
A smelting furnace 11 as shown in the figure is known.

The smelting furnace 11 includes a cylindrical furnace body 13 with a bottom. This furnace body 13 is provided with a ceiling wall 15, and molten metal is stored inside. A lance pipe 17 is provided on the ceiling wall 15. This lance pipe 17
is arranged to penetrate the ceiling wall 15, and feeds oxygen-enriched air into the furnace body 13 at high speed to cause an oxidation reaction in the solution.

An opening 19 having a substantially rectangular cross section is provided on one side of the ceiling wall 15 across the lance pipe 17, and a rising flue 21 for discharging exhaust gas is provided upward from this opening 19. ing.

Further, a splash suppressor jacket 2 is provided between the opening 19 of the ceiling wall 15 and the lance pipe 17.
3 is provided. The splash suppressing jacket 23 is provided to protrude downward and prevents the splash caused by the high-speed gas from the lance pipe 17 from entering the rising flue 21. The splash suppressing jacket 23 is formed along the opening edge of the opening 19 on the lance pipe 17 side, perpendicular to the direction from the lance pipe I7 to the opening KS19, and both ends thereof are formed in the furnace. It reaches the side wall portion 25 of the main body 13.

Further, a solution outlet 27 is provided in the side wall portion 25 of the furnace body 13 on the other side with the lance pipe 17 interposed therebetween.

"Problems to be Solved by the Invention" By the way, in the above-mentioned smelting furnace 11, although it is possible to charge powder and bodies into the furnace through the lance pipe 17, it is not possible to charge lumps. The problem was that it couldn't be done. On the other hand, it is also conceivable to provide the smelting furnace 11 with a charging port. However, since the inside of the smelting furnace 11 is heavily splashed, even if a charging port is provided, it will be blocked by the splash and is of no use.

[Means for Solving the Problems] This invention has been made to solve the above-mentioned problems. Either one is provided with a lump charging port.

"Embodiment" Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3. In addition, in these figures, the same reference numerals are given to the parts having the same configuration as those of the conventional example, and the explanation thereof will be omitted.

These figures are diagrams showing a smelting furnace 31 according to the present invention. This smelting furnace 31 has a side wall 33 of a rising flue 21.
A charging port 35 is provided in the.

This loading port 35 is provided with an opening/closing door 37.

A mounting table 39 is provided on the side of the charging port 35 on which a pressed product (lump material) P to be charged is placed.

On the side of this mounting table 39, there is a press product pushing device 41.
is provided. This pressed product pushing device 41 is
It is equipped with an air cylinder, and is configured to push the pressed product P conveyed to the mounting table 39 into the charging port 35. A conveyor 43 is provided above the pressed product pushing device 41, and the mounting table 3
The pressed product P is supplied to 9.

In such a smelting furnace 31, in order to charge the pressed product P into the furnace, the pressed product P is first fed onto the mounting table 39 by the conveyor 43. Next, the opening/closing door 37 is opened. Next, the press product P placed on the mounting table 39 is pushed up into the flue 21 by the press product pushing device 41 and fed into the melt inside the furnace body 13.

The pressed product P supplied into the furnace is then melted in a melting furnace.

In this smelting furnace 31, since the charging port 35 is provided on the side wall 33 of the rising flue 21, it is blocked by the splash suppressing jacket 23, and the splash is prevented from hitting the charging port 35. Therefore, the pressed product P can be easily loaded into the furnace.

In addition, the pressed product P is charged at the position farthest from the solution outlet 27, and is also charged on the side opposite to the solution outlet 27 with the lance pipe 17 sandwiched between them. The solution cannot easily reach the solution outlet 27 due to waves on the surface of the melt caused by the high-speed fluid. Therefore, the press product P can be sufficiently melted, and the unmelted press product can be prevented from reaching the solution outlet 27 and blocking the solution outlet 27.

In the above embodiment, the charging port 35 is provided on the side wall 33 of the rising flue 21, but it is not limited to this, and the charging port 35 is provided on the ceiling wall 45 on the side of the opening I9 from the splash suppressing jacket 23. Alternatively, the same effect as in the above embodiment can be obtained.

"Effects of the Invention" As explained above, according to the present invention, the lump material charging port is provided in at least one of the ceiling wall on the side of the stove and the side wall of the rising flue. It is possible to prevent the charging port from being blocked by splash, thereby achieving the effect that the lumps can be easily charged into the furnace, and the lumps can be charged at a position separated from the solution outlet. Therefore, it is possible to completely dissolve the lumps, and it is possible to prevent undissolved lumps from clogging the solution outlet.

[Brief explanation of the drawing]

1 to 3 are views showing one embodiment of the present invention, in which FIG. 1 is a side sectional view, FIG. 2 is a plan view, and FIG.
The figure is a cross-sectional view taken along the line ■-■ in Figure 2, and Figures 4 and 5 are views showing an example of a conventional smelting furnace. The figure is a sectional view taken along the line ■-■ in FIG. 4. 13... Furnace body, 15... Ceiling wall, 1
7...Lance pipe, 19...Opening, 21...Rising flue, 23...
Splash suppressor jacket, 27...Solution outlet, 31...Smelting furnace, 33...Side wall, 35...Charging port, 45...・Ceiling wall,
P...Pressed product (lump).

Claims (1)

[Claims] A lance pipe is installed on the ceiling wall of the furnace body,
A rising flue opening is provided on one side of the lance pipe in the ceiling wall, a splash suppressor jacket protruding downward is provided closer to the lance pipe than the opening in the ceiling wall; In a smelting furnace in which a melt outlet is provided on the other side of the lance pipe, at least one of the ceiling wall of the splash suppressor jacket on the side opposite to the lance pipe and the side wall of the rising flue, A smelting furnace characterized by being provided with a charging port for lumps.