JPS5936191B2 - How to tighten the bottom bricks of metal melting furnaces, etc. - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for tightening bottom bricks of metal melting furnaces, smelting furnaces, etc., and is used to prevent molten metal from leaking from gaps between the bottom bricks that occur during cooling in the furnace. This can be prevented and smooth operation of the furnace can be achieved.

Generally, in metal melting furnaces, smelting furnaces, etc., when the furnace is in operation, or when the temperature is raised again after molten metal has been tapped and the inside of the furnace has been cooled, there is insufficient force to tighten the bottom bricks. In such cases, the bricks move unevenly, resulting in gaps between the bricks.

There was a risk that molten metal would leak outside through this gap, damage the bottom of the hearth, or cause accidents such as leaking into the hearth, resulting in a shutdown of operations.

At present, there is no such thing as something to deal with such dangers.

The present invention relates to a method for tightening the bottom bricks of metal melting furnaces, etc., which was made in view of the above-mentioned circumstances, by mechanically tightening the bottom bricks of metal melting furnaces, etc. from the outer periphery in the direction of the core. It is characterized by constant pressing and tightening.

Embodiments of the present invention will be described based on the drawings.

FIG. 1 is an explanatory longitudinal cross-sectional view of a metal melting furnace in which the method of tightening bottom bricks of the present invention is implemented. 1 is an iron shell, 2 is a ceiling brick,
3 is a side wall brick, 4 is a furnace bottom brick, and 5 is a molten metal.

As shown in Fig. 2, a presser foot 6 of a required length is provided on the outside of the hearth brick 4 (on the side opposite to the core), and springs 7 are provided at multiple locations between the presser foot 6 and the steel shell 1, so that the Make it possible to apply force in the direction of the core.

Since the bottom bricks 4 are constantly applied force (pressed) in the direction of the core from multiple locations by the springs 7, it is possible to prevent the formation of gaps between the bottom bricks 4 due to differences in thermal expansion during cooling of the furnace. Therefore, leakage of molten metal 5 can be prevented.

In addition, forced cooling may be performed during maintenance, and in this case, cracks in the bricks that are likely to occur and gaps caused by these cracks can be prevented, and leakage of the molten metal 5 can be prevented.

A hydraulic accumulator may be used instead of the spring I.

The one shown in FIG. 3 is another embodiment in which one end is attached to the presser foot 6.
The other end of the link mechanism 8 is connected to a force generating mechanism 9, so that the force generating mechanism 9 can always apply force to the bottom bricks 4 in the direction of the reactor core.

It is optional to use a hydraulic cylinder, a motor, a spring, a screw, or a heavy object as the force generating mechanism 9.

The one shown in Figure 4 uses the own weight of the furnace body to move the bottom bricks 4
This is an embodiment in which the cylinder is pressed in the direction of the reactor core.

That is, the tip of the rod 10 is connected to the presser foot 6 with a pin, the other end of the rod 10 is attached to a support 12 via an adjustment screw 11, and the protruding end of the support 12 is pivotally connected to a bracket on the furnace bottom plate. When a load is applied as shown in a, the rod 10 is moved as shown by the arrow A so that the bottom bricks 4 are always pressed in the direction of the reactor core.

In FIG. 4, 13 and 14 indicate a stopper, and 15 indicates a base, respectively.

FIG. 5 is an explanatory horizontal sectional view showing another embodiment, the details of which are shown in FIGS. 6 and 7.

That is, the bracket 17 of the presser foot 16 is made to protrude outward from the steel shell 1, and the wire (or round bar) 18 is passed through the protruding end of the bracket 17 to successively connect the presser foot 16, and both ends of the wire 18 are connected with springs (or Hydraulic cylinder) 19
to connect the wire 18 to the bracket 1 so that the wire 18 is always in tension.
7 and a presser foot 16, force can be applied to the hearth brick 4 in the direction of the reactor core.

Note that the present invention is not limited to the illustrated and described embodiments; for example, it is optional to divide the hearth bricks into several layers and apply force to the hearth bricks in the direction of the reactor core for each layer. However, various changes may be made without departing from the gist of the present invention.

As described above, according to the method for tightening the bottom bricks of a metal melting furnace, etc. of the present invention, it is possible to prevent gaps between the bottom bricks that occur during cooling or maintenance in the furnace, thereby preventing leakage of molten metal. It exhibits excellent effects such as being able to prevent this, smoothing out the furnace operation, and simplifying the mechanism of the equipment used, making it easy to assemble.

[Brief explanation of drawings]

Fig. 1 is an explanatory vertical cross-sectional view of a metal melting furnace in which the method of tightening bottom bricks of a metal melting furnace, etc. of the present invention is implemented, Fig. 2 is an enlarged detailed view of the part ■ in Fig. 1, and Fig. 3 and FIG. 4 is an explanatory view showing another example of FIG. 2, and FIG. 5 is an explanatory cross-sectional view of a metal melting furnace in which the method for tightening bottom bricks of other metal melting furnaces, etc. of the present invention is implemented. , FIG. 6 is an explanatory enlarged view showing the main part of FIG. 5, and FIG.
The figure is a view taken in the direction of the ■ arrow in FIG. 6. 1... Iron shell, 4... Hearth brick, 5...
...molten metal, 6...presser foot, 7...
··spring.

Claims (1)

[Claims] 1. A method for tightening the bottom bricks of metal melting furnaces, etc., which is characterized in that the bottom bricks of metal melting furnaces, etc. are tightened by constantly pressing the bottom bricks mechanically from the outer periphery in the direction of the reactor core with a required force.