JPS59164880A - Agitator for moleten metal in reverberatory 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] This invention improves the temperature of molten metal in a reverberatory furnace by +a? This relates to a means for F.

Generally, a reverberatory furnace fueled by heavy oil, gas, etc. is used to melt aluminum and aluminum alloys, or to hold the molten metal obtained by melting. i by arising
;'t, stirring is requested. This stirring is important not only for making the temperature difference uniform, but also for making the alloy components uniform in the case of aluminum alloys, preventing oxidation on the surface, and increasing the absorption of thermal energy.

By the way, among the reverberatory furnaces, is the open-well type reversible furnace suitable for melting aluminum or holding molten metal, and having a heating part and a well part, type 0 and 5 types of hot water? The aluminum material to be molten is introduced from the outside or is obtained by melting the metal using a heat source, and then the aluminum material to be molten is bathed in the well area to cause an oxidation phenomenon due to the heat of the surrounding molten metal. It gradually dissolves. At this time, the temperature of the molten metal in the well part is in an open state and is lower than the temperature in the heating part due to the dissipation of melting energy. Although it is expected that the temperature difference between the heating part and the well part can be compensated for somewhat by heat conduction, there is still a temperature difference of Kana V, which requires an exchange action between the molten metal in the heating part and the molten metal in the well part. .

As a means for this purpose, such methods as arranging a moving magnetic field generating inductor at the bottom of the furnace, and temporarily guiding the high-temperature molten metal in the heating section out of the furnace and causing it to flow down from above the open well section have been adopted.

However, in the conventional reverberatory furnace Vc, the fluid stirring action of the molten metal existing in the heating section and the well section is limited to a fixed point where the high temperature molten metal is supplied to the well section. For this reason, although almost the entire molten metal can be uniformly melted, for example, the metal to be melted in the open well part is concentrated and it is difficult to flow it down accurately to the place where the metal to be melted is concentrated in the open well part. There were problems with metal dissolution efficiency.

The purpose of this invention is to introduce a structure in which high-temperature molten metal is guided to the side from the heating part of a reverberatory furnace, and then raised diagonally upward by the action of an electromagnetic gutter ζ5, and the high-temperature molten metal is caused to flow down above the well part by a guide gutter. The purpose of the present invention is to make the guide trough movable so that the molten metal flows down precisely to the location where the metal to be melted is most concentrated.

The embodiments shown in the drawings will be explained in detail below. 1st
1 and 2 are a side view and a plan view of an aluminum reverberatory furnace for carrying out the present invention, respectively. In each figure, 1 is an aluminum reverberatory furnace main body, which is equipped with a heating part 1a and a well part lb,
A smoke exhaust port 1c is provided in the upper part of the heating part 1a, and a well part 1b is provided in the upper part of the heating part 1a.
A hot water inlet 1d is formed at the lower side of the wall, which is located much further inside. 2 is a burner device provided at the upper part of the heating section 1a of the reverberatory furnace 1 in the direction opposite to the well section 1b;
A flame is radiated into the interior of the room to powerfully heat the inside of the heating section la. Reference numeral 3 denotes a hot water storage tank, through which high-temperature molten metal is guided from a pouring port 1d formed in the heating section 1a; 4 is an electromagnetic gutter, one end of which is located at the bottom of the hot water storage tank 3; It faces obliquely upward and extends to the upper side of the well portion 1b. 5
06 is a lid body, and 06 is a support for the electromagnetic gutter 4, which completely prevents the temperature of the molten metal from decreasing while passing through the hot water storage tank 3 and the electromagnetic gutter 4. The molten aluminum 7 is accumulated in the heating section 1a or the well section 1b' of the reverberatory furnace 1, and the molten metal 7 is passed through the pouring port 1d' (
/ through which it also flows into the hot water storage tank 3. Incidentally, the AA' cross section of the electromagnetic gutter 4 has a configuration as shown in FIG.

That is, the movable magnetic field generating inductor 40 that provides thrust to the molten metal in one passage 4a is provided at the bottom of the refractory material 4b forming the molten metal passage 4a, and the lid 5 is disposed on the upper surface of the passage 4a. Ru. A guide trough 8 transports the molten metal 7 flowing out from the upper end of the molten metal passage 4a of the electromagnetic trough 4 to the upper part of the well portion 1bσ).

Now, the structure on which this invention is based is patented by the same applicant, but below we will explain a specific example of this invention. First, Figure 4 shows the electromagnetic gutter 4, guide gutter 8, and reverberatory furnace The relationship of the well portion 1b of l -t', that is,
The guide trough 8 is shown to be rotatably supported at a center P located at the tip of the γn magnetic trough 4, and the molten metal is received from the tip of the electromagnetic trough 4 at the center of rotation, and the molten metal is transferred to the el part 4b. I will guide you to. By arranging the tip of the guide trough 8 at an angle with respect to the flow direction of the molten metal, as shown in FIG. 4, the service range affected by the flow of high-temperature molten metal can be increased.

On the other hand, it shows an embodiment different from Figures M5 to Figure 7 and Figure 11, where Figure 5 is a plan view of the main part, Figures 6 and 6 are BB/sectional views of Figure 5, and Figure 7 is the operation. In the principle diagram for explaining h'i13'-I'd, the guide gutter 8 that receives the molten metal flowing down from the molten metal falling port 4x at the tip of the gutter 4 is perpendicular to the longitudinal direction of the electromagnetic gutter 4, for example, as shown in the figure. As shown in FIG. 6, the means for this purpose is as shown in FIG. It is configured so that Therefore, the tip of the guide trough 8 is connected to the well portion 1.
It can be displaced at b. FIG. 7 shows a high-temperature molten metal R flowing from the tip of the movable guide trough 8 shown in FIGS. 4 to 6 to the metal to be melted M.
It shows the state of pouring f.

In the above configuration, first, an aluminum ingot (not shown) is put into the heating part la of the reverberatory furnace 1 and a flame is generated from the burner device 2, and the aluminum ingot is gradually melted, and the aluminum ingot is gradually melted. Molten metal 7 is produced. However, the molten metal 7 is generated externally and is placed in the well y1 of the reverberatory furnace 1.
It is also possible to obtain base metal (hot water) ft by inflowing 1 bxp. Then, the hot water 7 serving as the base metal is heated in the heating section 1a of the reverberatory furnace 1 by the burner device 2 in a cage, thereby fully compensating for the temperature drop. When the amount of molten metal reaches a certain level, the high-temperature molten metal 7 existing in the heating section 1a of the reverberatory furnace 1 flows into the hot water storage tank 3 from the pouring port 1d.

Therefore, when AC power is supplied to the inductor 4C to operate the electromagnetic conductor 4 placed diagonally above the well portion 1b from the bottom of the hot water storage tank 3, @iJ! An eddy current is generated, and the interaction between this eddy current and the moving magnetic field generated from the inductor 4C generates a thrust force, and the molten metal 711- is transferred diagonally upward in the electromagnetic gutter 4.

Now, the molten metal flowing down from the tip of the electromagnetic gutter 4 transfers to the guide gutter 8 and flows toward the tip of the guide gutter. By displacing the position of the outflow part in a fan shape and a band shape, respectively, the zone where the molten metal falls into the well part can be changed freely.

As described above, the molten metal agitation device in the reverberatory furnace according to the present invention has an electromagnetic flow from the hot water storage tank that guides the molten metal in the direction of the hole 1j to the upper part of the well part 1b into which the material to be melted in the reverberatory furnace 1 is introduced. The gutter and guide gutter are designed to guide the molten metal (in the structure, the guide gutter is movably supported. can be precisely poured around the material to be melted in the well portion 1b, and the melting efficiency can be significantly improved.

[Brief explanation of the drawing]

Figure 1 is a side view, Figure 2 is a plan view, Figure 3 is A of Figure 2.
-A sectional view, FIG. 4 is a plan view of essential parts showing an embodiment of the present invention, FIGS. 5, 6, and 7 are plan views showing other embodiments, and B-B in FIG. FIG. 2 is a cross-sectional view and a principle diagram showing a flowing state of molten metal. 1...Reverberatory furnace main body...Caro heat sound 61a, lb@...Well part 1d-...Throughout 14,...
・Electromagnetic gutter 7... Molten metal 8... Guide gutter
9...Rail M...Metal to be melted Applicant Shinko Electric Co., Ltd. Agent Patent attorney *Fujitoya Figure 3 Figure 4

Claims (1)

[Claims] (1) A refractory furnace provided outside the side wall of the reverberatory furnace for transporting the molten metal guided through the inlet formed on the side wall of the reverberatory furnace heating section toward the well for introducing the metal to be melted. , an electromagnetic gutter that slopes upward, and guides the molten metal flowing out from the tip of the electromagnetic gutter to the upper part of the well part. A molten metal stirring device in a reverberatory furnace having a means for stirring. 2. The molten metal stirring device in a reverberatory furnace according to claim 1, wherein the guide trough is pivotable around the vicinity of the point where the molten metal flows from the electromagnetic trough as means for displacing the point at which the molten metal flows with respect to the well portion of the guide trough. 3. In the reverberatory furnace according to claim 1, wherein the molten metal receiving part from the electromagnetic gutter and the lower part of the molten metal flowing into the well part are movable in parallel as means for displacing the point where the molten metal flows with respect to the well part of the guide gutter. Molten metal stirring device.