JP2954385B2 - Brick of aluminum storage tank and aluminum storage tank using the brick - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum storage tank for filtering impurities contained in molten aluminum, and to an aluminum storage tank having a special fitting structure and an aluminum storage tank using the same.

[0002]

2. Description of the Related Art Aluminum sheets and foils are manufactured by casting molten aluminum into an ingot and rolling it. However, if fixed impurities such as metal oxides and small pieces of refractory contained in the molten aluminum are directly mixed into the ingot, pinholes and surface defects occur in the process of rolling and manufacturing thin plates and foils. Sometimes. To prevent this, use a filter material with a special structure,
Thus, a method of removing solid impurities in the molten metal has been adopted.

[0003] The lining brick of an aluminum smelting tank equipped with such a filter medium is in direct contact with the aluminum melt, so that it has non-reactivity with the aluminum melt, oxidation resistance, and the like.
Silicon carbide-based or silicon nitride-based bricks are generally widely used because of their advantages such as hot water releasability.

[0004]

However, in many cases, the shape of the lining bricks used is simple in terms of the manufacture of the bricks. In general, plate bricks are simply stacked and mortar is used for the overlapping surface. It is joined and constructed.
FIG. 5 shows a side wall structure of the aluminum storage tank, which is composed of a lining brick 21, various heat insulating materials 22, and an outer plate 23 from the side of the molten aluminum 20. Insulated up to 50 ° C. In this case, the mortar is its strength, there is a problem with penetration of molten aluminum metal, for example, a crack occurs in the mortar by thermal shock upon contact with molten aluminum 20 to about 800 ° C., as in FIG. 6, from the gap There is a problem that the molten aluminum 20 leaks. When the molten aluminum 20 leaks from the lining brick 21, it reaches various heat insulating materials 22 inside the side wall of the aluminum storage tank,
This raises the temperature of the outer wall, resulting in various problems such as a decrease in thermal efficiency, a deterioration in the working environment, and a decrease in the life of the outer wall plate.

[0005]

SUMMARY OF THE INVENTION The present invention therefore was made to solve the problems of the conventional lining bricks described above, according to the present invention, the upper surface of the inner Zhang bricks longitudinally central portion to form a convex portion, with the bottom surface to form a concave portion having a shape that fits fitting convex portion of the upper surface, a notch portion on the side surface corner you contact <br/> other brick該煉tile A lining brick of an aluminum storage tank, wherein the cut portion is formed in a shape that can be fitted to a side surface of another brick.
Further, according to the present invention, there is provided an aluminum storage tank using the above lining brick.

[0006]

The upper surface of the inner Choneri tiles DETAILED DESCRIPTION OF THE INVENTION The present invention longitudinally central portion forms a convex portion, a concave shape bottom fit fitting convex portion of the upper surface
Part forming a co (so-called dowel structure), a side in contact with the other bricks of the brick of the cut portion is provided at the corner portion, the cut portion may fit together with the side surface of the other brick shapes (so-called phase Hanging structure).

[0007] By using the lining brick having such a structure, even when a thermal stress is applied, the leakage distance of the aluminum melt becomes long, and when the dowel structure and the half-hook structure are adopted, Due to the synergistic effect of the dowel structure and the stake structure, the lining bricks are firmly joined to each other on the upper and lower surfaces and side surfaces, so that the wall does not swell as a structure, and the molten aluminum leaks from the joint surface of each brick There is no. Further, even when the aluminum storage tank is constructed using the lining bricks, the bonding position between the lining bricks becomes clear, and the workability can be improved.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in more detail with reference to the illustrated embodiments, but the present invention is not limited to these embodiments .

[0009]

FIGS. 1 to 4 show an embodiment of the lining brick according to the present invention. The upper surface of the lining brick 10 has a convex portion 11 at the center in the longitudinal direction, and the bottom surface has a convex upper surface. A concave portion 12 (a dowel structure) having a shape capable of fitting with the shape portion 11 is formed. On the other hand, the side surface in contact with another brick of the lining brick 10 is provided with a cut portion 13 at a corner portion, and the cut portion 13 is formed in a shape (hook structure) that can be fitted to the side surface of another brick. . And in this invention, since the lining of an aluminum storage tank is comprised using the lining brick of the said structure, the aluminum storage tank whose lining surface was firmly joined can be obtained.

[0011]

As described above, according to the present invention,
By using a lining brick of a specific structure, even if thermal stress is applied, the leakage distance of the aluminum melt becomes longer and the lining bricks are firmly joined to each other, and the molten aluminum leaks from the joining surface of each brick There is no fear. Also, when the aluminum storage tank is constructed using the lining bricks of the present invention, the bonding position between the lining bricks becomes clear, and the workability can be improved.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an embodiment of a lining brick according to the present invention.

Is a front view of FIG. 1;

FIG. 3 is a side view of FIG. 1 ;

FIG. 4 is a plan view of FIG. 1 ;

FIG. 5 is an explanatory sectional view showing a side wall structure of the aluminum storage tank.

FIG. 6 is an explanatory sectional view showing a state in which molten metal has leaked from an aluminum storage tank.

[Description of Signs] 10 lining bricks, 11 convex portions, 12 concave portions, 13
Notch.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) C22B 9/02 C22B 21/06 F27D 1/04

Claims (2)

(57) [Claims] 1. An upper surface of a lining brick has a convex portion at a central portion in a longitudinal direction, and a bottom surface has a concave portion which is fitted with the convex portion of the upper surface, and is in contact with other bricks. A lining brick for an aluminum storage tank, wherein a cut portion is provided on a side surface at a corner portion, and the cut portion is formed in a shape capable of fitting with the side surface of another brick. Wherein an inner contact with molten aluminum in the aluminum container tank, aluminum containing tank, characterized in that lined the lining brick as claimed in claim 1 Symbol placement.