JP2876382B2 - Aluminum chip melting equipment - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in an apparatus for dissolving aluminum chips, that is, aluminum chips. 2. Description of the Related Art A conventional aluminum chip melting apparatus is shown in FIG.
As shown in FIG. 5 and FIG. 5 , the aluminum chips supplied from the chip input chute 9 to the chip input port 10 are circulated through the electromagnetic gutter 5 and the electromagnetic gutter 4 in the reverberatory furnace 8. The molten metal was guided into the reverberatory furnace 8 and melted. 7 is a burner. Further, as shown in FIG. 7 , a chute 13 is provided in a tangential direction with respect to a swirling chamber 12 so that aluminum scrap is swirled and supplied onto a molten metal surface in a furnace 14 (particularly, FIG. 7 ) . JP-A-59-56077). [0003] In the above-mentioned conventional aluminum chip melting apparatus, the one shown in Figs. 4 and 5 has the problem that the aluminum chips are so fine that aluminum supplied as shown in Fig. 6 is used . The swarf 11 is guided by the circulating molten metal and
And immediately floats on the surface of the molten metal (B in the figure). As a result, there is a disadvantage that the dissolving efficiency of the aluminum chips is deteriorated due to the time required for dissolving the aluminum chips, and that the floating aluminum chips are oxidized and become slag (slag), thereby deteriorating the yield. [0004] In order entrainment cuttings inlet 10 is bad, increasing the dosage of aluminum cutting chips, the chips inlet 10 aluminum cutting chips adheres like a bridge to chips inlet 10 There was also a problem of blocking. [0005] Further, in the furnace disclosed in Japanese Patent Application Laid-Open No. S59-56077, turning is performed in order to eliminate floating of aluminum scrap as much as possible. Even if it is supplied on a surface, it does not mix well into the hot water, and there is a problem that a large improvement in yield cannot be seen. Means for Solving the Problems [0006] In order to solve the above problems, the present invention provides an electromagnetic gutter and an electromagnetic gutter for melting molten metal in a melting furnace.
Chips circulated through the gutter and provided on the electromagnetic gutter
In the aluminum chip melting apparatus, in which the aluminum chips are injected into the molten metal from the input port and are melted in a melting furnace , the chip input port is provided with a vortex chamber for generating a vortex in the circulating molten metal,
A straight introduction gutter extending from the outlet of the vortex chamber to the inside of the melting furnace along the bottom of the melting furnace is provided separately from the furnace wall. The present invention having the above-described structure has the following effects. In other words, an introduction gutter extending from the outlet of the vortex chamber to the inside of the melting furnace along the bottom of the melting furnace is provided separately from the furnace wall, so that the introduction gutter is extended so that aluminum chips stay in the introduction gutter. The time can be lengthened and much of the aluminum chips are melted in the inlet gutter. Further, since the introduction gutter is formed in a straight line, even if the introduction gutter is extended, the inside thereof can be easily cleaned. Hereinafter, an embodiment of the present invention will be described in detail. 1, 2 and 3 , the molten metal in a reverberatory furnace (melting furnace) 8 provided with a burner 7 is circulated between an open well 6 through an electromagnetic gutter 5 and an electromagnetic gutter outlet 4. The vortex chamber 1 is provided at a position below the chip input chute 9 disposed above the open well 6 and at one end of the electromagnetic gutter outlet 4 facing the chip input port 10. The lower part of the chamber 1 is immersed in the molten metal. One end of a linear introduction gutter 3 extending horizontally along the bottom of the open well 6 is connected to the outflow end of the vortex chamber. Introductory gutter 3
Is extended to the inside along the bottom of the reverberatory furnace 8. A swirl generating block 2 is provided at one end of the electromagnetic gutter 4 on the side of the flow passage close to the chip input port 10 (FIG. 3). The vortex flow generating block 2 is detachable, and can be adjusted so that the vortex of the molten metal is generated at an optimum position by shifting its mounting position. 7 is a burner. Next, the operation of the present embodiment configured as described above will be described. First, the position of the vortex generation block 2 is adjusted, and the vortex generation block 2 is preliminarily positioned so as to generate an optimum vortex. At this time, the generation of the vortex is affected by the flow rate, the flow velocity, the viscosity, the specific gravity, and the like. By adjusting the position of the vortex generating block 2 in this way, the molten metal in the reverberatory furnace 8 circulates in the vortex chamber 1 while generating a vortex. Then, as shown in FIG. 3, the aluminum chips 11 supplied from the chip input chute 9 are caught in the vortex and violently stirred into the molten metal. As described above, the aluminum chips mixed in the molten metal by being stirred in the vortex chamber 1 flow out into the introduction gutter 3 and flow through the introduction gutter 3 to the inside of the reflection furnace 8.
Since the length of the introduction gutter 3 is relatively long,
The residence time of the aluminum chips in the inside becomes long, and most of them are dissolved in the introduction gutter 3. At this time, almost all of the fine aluminum chips are dissolved, and the coarse aluminum chips are partially left undissolved. However, even when the coarse aluminum chips flow out of the introduction trough 3 into the reverberatory furnace 8, It takes a long time to float or does not float at all, so that the amount of aluminum chips in the reverberatory furnace 8 becomes extremely small and the yield is remarkably improved. When the introduction gutter 3 is cleaned while the melting furnace 8 is stopped, the cleaning can be easily performed because the introduction gutter 3 is linear. In addition, when the melting furnace 8 is stopped, the molten metal adheres to the surface of the electromagnetic gutter 4 exposed outside the furnace, and a thin aluminum film is gradually formed. Occurrence block 2
Is removed and removed from the part, thereby facilitating the work. As described above in detail, according to the present invention, the introduction gutter can be extended from the chip inlet to the inside of the melting furnace, and most of the aluminum chips can be melted in the introduction gutter. In addition, the amount of aluminum which becomes floating slag in the melting furnace is remarkably reduced, and the yield is greatly improved. Further, since the introduction gutter is linear, the inside thereof can be easily cleaned even if the introduction gutter is extended. Thus, maintainability is improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a cross-sectional view of an aluminum chip melting apparatus according to an embodiment of the present invention. FIG. 2 shows a side view of the apparatus shown in FIG. It is the figure which carried out the longitudinal section. FIG. 3 is an enlarged perspective view showing a vortex chamber portion in FIG. 1; FIG. 4 is a cross-sectional view of a conventional aluminum chip melting device.
You. 5 shows a side view of the device shown in FIG .
It is the figure which carried out the longitudinal section of the part. 6 is a partially enlarged view of the chip input port shown in FIG . 4;
FIG. FIG. 7 Injection of chips into a conventional aluminum scrap melting apparatus
It is a longitudinal section showing a mouth. [Description of Signs] 1 vortex chamber 2 vortex generating block 3 introduction gutter 8 melting furnace (reflection furnace)

Claims (1)

(57) [Claims] The molten metal in the melting furnace passes through the electromagnetic gutter and the electromagnetic gutter
And circulate, from the chip input port provided on the electromagnetic gutter
In an aluminum chip melting apparatus in which an aluminum chip is charged into a molten metal and melted in a melting furnace , a vortex chamber for generating a vortex in the circulating molten metal is provided at the chip input port, and an outlet of the vortex chamber is provided. An aluminum chip melting device in which a straight introduction gutter extending to the inside of the melting furnace along the bottom of the melting furnace is provided separately from the furnace wall.