JPS5935577Y2 - Exit structure of the "Ku" refining furnace - Google Patents

Description

[Detailed description of the invention] This invention relates to an outlet structure of a smelting furnace in a continuous smelting facility for metal sulfide ore.

Among the metal smelting processes of sulfide metal ores, for example, the copper smelting process can be roughly divided into (1) ore preliminary treatment, (2) production of copper, and (3)
) production of blister copper; (4) electrolytic refining;
In continuous smelting, (1) to (3) are processed continuously.

This invention relates to (2) the production of leather, particularly the smelting furnace, and the smelting furnace will be briefly explained below.

The smelting furnace uses an appropriate combination of melting raw materials mainly composed of sulfide metal ore and a solvent, fuel, and air;
(3) The karami separated in the smelting furnace in the blister copper manufacturing process is directly and continuously supplied to the molten bath in the smelting furnace and melted without delay to produce kawa and karami, and then these The product is continuously transferred to the next step, a separation tank.

FIGS. 1 and 2 show an example of the outlet structure of a conventionally used smelting furnace in an open state.

1 in the figure is a smelting furnace used in a continuous steelmaking process for metal sulfide ore.

The molten material 2 produced in this smelting furnace 1 overflows from the furnace outlet 3 and then flows into the outlet gutter 4 provided at right angles to the furnace wall surface of the furnace outlet 3, and then further flows into the outlet gutter 4. The liquid passes through the drain 5 provided at the protruding end of the pipe, passes through the transfer gutter 6, and flows into the separation tank, which is the next step.

However, such conventional smelting furnaces have two major problems.

One of these is acrision that falls from the side wall of the inside of the smelting furnace 1 and remains unmelted, and bricks that have fallen from the furnace repair of hanging bricks from the ceiling, etc., flow out of the furnace outlet 3 and continue to flow through the furnace 5. The problem is that the melt flows over the transfer gutter 6 and accumulates in the transfer gutter 6, obstructing the flow of the melt 2, or in the worst case, blocking the transfer gutter 6 and causing the melt 2 to overflow from the transfer gutter 6. It is.

That is, if the transfer gutter 6 is blocked, it is necessary to stop the supply of raw materials in the smelting furnace 1, open the implantation and remove the deposits, but this work must be carried out in high heat. It was dangerous, and the economic damage caused by the work stoppage was enormous.

The other type is the removal of bricks that have fallen from the side walls of the inside of the smelting furnace 1 that block the furnace outlet 3 and are not melted, and bricks that have fallen due to furnace repair of ceiling hanging bricks, etc. The work is carried out using a steel pipe drawn from above the transfer gutter 6, but at this time the transfer gutter 6 is continuous with the outlet gutter 4 and extends at right angles to the furnace wall surface at the furnace outlet 3, so the work efficiency is improved. The problem is that it also increases the working time.

This idea was made in consideration of these points, and it allows foreign objects such as bricks in the melt to be collected in one place, and these foreign objects can be easily removed. It is an object of the present invention to provide an outlet structure for a smelting furnace that can easily perform the following steps.

Hereinafter, one embodiment of the outlet structure of the smelting furnace according to this invention will be described in detail with reference to FIGS. 3 and 4.

In addition, FIG. 3 and FIG. 4 show the state where the implantation was opened.

In the figure, reference numeral 11 denotes a smelting furnace, and the melt 12 produced in this furnace overflows from the furnace outlet 13 and then flows into an outlet gutter 14 provided at right angles to the furnace wall surface of the furnace outlet 13.

A transfer gutter 16 is provided perpendicularly to the left side wall of the outlet gutter 14 through a gutter 15, and the molten material 12 that has flowed into the outlet gutter 14 passes through this transfer gutter 16 and is transferred to the next process. The mixture is transferred to a separation tank (not shown).

Further, a pocket portion 17 is provided at the protruding end of the outlet gutter 14, and a notch portion 18 is provided at the upper portion of the protruding end wall surface forming the pocket portion 17.

Note that 19 is a foreign substance floating on the surface of the melt 12.

Next, the case where the foreign matter 19 is suspended in the melt 12 and the removal of deposits at the furnace outlet 13 will be described.

As mentioned above, foreign matter 19 such as bricks and acridions sometimes floats in the melt 11, and this foreign matter 19 passes through the furnace outlet 13 along the flow of the melt 11 and flows into the outlet gutter 14.

The foreign matter 19 that has flowed into this outlet gutter 14 is
5 and the waving of the melt 12, the melt flows into the pocket portion 17 without flowing out into the transfer gutter 16.

Also, the foreign matter 19 gathered in the pocket 17 in this way
The notch 1 provided on the protruding end wall surface of the pocket portion 17
8 can be taken out more easily.

On the other hand, the removal of deposits at the furnace outlet 13 is carried out by lancing, which introduces oxygen into a drawn steel pipe. In this embodiment, a transfer gutter 16 is provided at right angles to the outlet gutter 14, so that the front of the outlet gutter 14 is clogged. This can be easily done from the protruding end wall surface of the pocket portion 17.

As explained above, according to the outlet structure of the smelting furnace according to this invention, a transfer gutter is provided via a pipe in the center of the side wall surface of the outlet gutter connected to the inside of the smelting furnace, and a transfer gutter is provided behind the outlet gutter. Since the wall has a notch located higher than the cutout, foreign matter flowing into the melt can be collected in one place, and these foreign matter can be easily removed. This has the great effect of making it easier to remove deposits.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example of the exit structure of a conventionally used smelting furnace with the implant opened, Fig. 2 is a perspective view of a part of it, and Fig. 3 is a melting furnace according to this invention. FIG. 4 is a plan view showing an embodiment of the exit structure in a state where the implant is opened, and FIG. 4 is a partial perspective view thereof. DESCRIPTION OF SYMBOLS 11... Smelting furnace, 12... Melt, 13... Furnace outlet, 14... Exit gutter, 15... Seki, 16... Transfer gutter, 17... Pocket part, 18 ...notch part, 19
...Foreign object.

Claims (1)

[Scope of utility model registration request] In a smelting furnace in continuous smelting equipment for metal sulfide ore, an outlet gutter is provided at the furnace outlet of the smelting furnace at a right angle to the furnace wall surface of the furnace outlet, and a side wall is provided at the center of the side wall surface of the outlet gutter. An outlet structure for a smelting furnace, characterized in that a transfer gutter is provided through the outlet gutter, and a notch is provided in a wall surface of the protruding end of the outlet gutter at a position higher than the gutter.