JPS6354051B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates primarily to a metal blowing device which is novel and has great industrial applicability, primarily for the purpose of effectively separating and recovering metal scrap containing a mixture of different metals.

Recently, mainly iron and steel, copper-based, aluminum-based,
The number of mixed spraps containing various metals such as zinc has rapidly increased, and the development of methods and equipment to effectively separate and collect the mixed spraps has become a concern in the industry. It is a well-known fact that, due to the extremely complex nature of the relationship, there has not yet been anything effective that can immediately respond to the demands of this field.

It is an object of the present invention to fully meet the recent demands of industry regarding the separate collection of such mixed splat through a novel configuration.

Next, the configuration of the device of the present invention will be specifically explained with reference to the drawings showing one embodiment.

1 is a metal blowing furnace which is the main part of the present invention; 2
is a blowing burner disposed on the upper part of one side wall 3 of the metal blowing furnace 1, and is configured so that multiple metals can be separated by the difference in melting temperature of different metals using oil or gas as a heat source. shall be carried out.

Incidentally, FIG. 1 shows, as an embodiment of the splitting burner 2, an oil burner in which oil is supplied from a fuel oil source 4 to the splitting burner 2 via an oil feeding device 5.

6 is the inner chamber of the blowing furnace; 7 is the inner chamber of the blowing furnace 6
an inner wall directly opposite to the first side wall 3;
is the top wall of the inner chamber, which is formed in a downwardly inclined shape with respect to the horizontal plane, and guides the hot air from the blow-off burner 2 disposed above the first side wall 3 so as to correspond to the first side wall 3. It shall be constructed so as to be brought into oblique contact with the inner wall 7.

9 is a hearth in the blowing furnace interior chamber 6,
The inner wall 7 is formed from the bottom of the inner wall 7 in the 1 side wall 3 direction in a downwardly inclined shape with respect to the horizontal plane, and as described above, the inner wall 7
The structure is such that the hot air that reverses when it collides with the hearth 9 can be made to flow directly above the floor surface, and the objects to be heated made of a plurality of metals, which are placed and stacked on the hearth 9, are appropriately melted. , so that the molten metal is 1 side wall 3
direction, that is, towards the blowing burner 2 side, with a downward inclination, and therefore the hearth 9
maintains the aspect of a dry hearth at all times.

Note that although FIG. 1 shows a configuration in which the front door 10 can be opened and the object to be heated can be placed on the hearth 9,
Needless to say, the canopy 11 may be made openable and closable, and the object to be heated may be placed on the hearth 9 by opening the canopy 11.

Next, 12 is a molten metal holding furnace that is integrally connected to the metal blowing furnace 1, and is bored in a portion corresponding to the downward end of the hearth 9 below one side wall 3 of the metal blowing furnace 1. The molten metal is disposed so as to be able to receive the hot air mixed with the molten metal flowing down the hearth 9 as described above and the high-temperature waste gas accompanying the metal blowing, through the through hole 13. The molten metal stored in the holding furnace interior chamber 14 is kept warm by hot air mixed with high-temperature waste gas, and by keeping the molten metal in a calm state, floating of scum-like foreign matter in the molten metal,
The purpose is to naturally release hydrogen gas and use it to clean the molten metal. Note that the number of through holes 13 may be singular or plural.

Reference numeral 15 denotes a waste gas exhaust hole disposed at a suitable location on the canopy of the molten metal holding furnace 12, which discharges waste gas from the interior chamber 14 of the molten metal holding furnace.
Reference numeral 6 denotes a drain hole that opens at the outer lower part of the molten metal holding furnace 12, and the molten metal held in a certain amount is appropriately led out and falls through the drain hole 16, for example.
It is cast into an ingot case 17 disposed directly below the drain hole 16.

In the apparatus of the present invention, as shown in FIG. 1, a holding furnace auxiliary burner 18 connected to the fuel oil source 4 and oil supply device 5 is arranged at a suitable position in the molten metal holding furnace 12, and the molten metal is It is desirable that the temperature in the holding furnace 12 be raised appropriately to prepare for molten metal processing such as slag removal, degassing, and composition adjustment, and for purification of secondary alloys or base metals.

In addition, 19 in the drawing is the molten metal holding furnace 1
2. It is a sludge drainage port located at a suitable location.

In the device of the present invention, with the above configuration,
The hot air sent into the blowout furnace inner chamber 6 by the blowout burner 2 is guided by the downwardly inclined top wall 8 of the inner chamber, as shown by the arrow in FIG. 7, and is reversed due to the presence of the inner wall 7, and flows directly above the downwardly inclined hearth 9 in the direction of the first side wall 3, and in the flow process,
It passes through the gap between the objects to be heated and stacked on the hearth 9, and uniformly heats the objects.

In this case, it goes without saying that a specific substance in the mixed scrap, which is the object to be heated, is melted by the hot air temperature appropriately set in the blowing burner 2. For example, in the case of automobile engine scrap, Mixed scraps made mainly of iron/steel and aluminum alloy, excluding the starter motor, dynamo, and carburetor, are placed and stacked on the hearth 9 as objects to be heated, and hot air of approximately 800°C is blown as described above. If the aluminum alloy is circulated through the separate furnace chamber 6, only the aluminum alloy will be melted and the iron and steel will remain.

In the apparatus of the present invention, not only is the metal blowing reliably performed as described above, but also the downward inclination of the hearth 9 causes the molten metal to naturally flow on the hearth 9 in one side wall and three directions due to its own weight. Therefore, since the hearth 9 always maintains the aspect of a dry hearth, the opportunity and time for solid-liquid contact between the insoluble matter remaining on the hearth 9 and the flowing molten metal are extremely small, and the This is the reason why the metal blowing effect is maximized at this point.

Furthermore, in the apparatus of the present invention, molten metal and hot air flowing downstream of the hearth 9 are received through a through hole 13 bored in a portion corresponding to the downward end of the hearth 9 below one side wall 3 of the metal blowing furnace 1. Along with this, the lower drain hole 16
By integrally connecting the molten metal holding furnace 12, which can appropriately discharge molten metal through the metal blowing furnace 1, in an organic relationship with the new configuration of the metal blowing furnace 1, The molten metal holding furnace 12 can extremely effectively keep the molten metal warm and treat the molten metal using waste heat, and in this respect, it has great industrial applicability. If the burner 18 is attached, the above-mentioned effect will be further increased.

[Brief explanation of the drawing]

The drawings all show one embodiment of the device of the present invention, with FIG. 1 being an overall perspective view and FIG. 2 being a longitudinal sectional side view of the main parts. In the drawing, 1 is a metal blowing furnace, 2 is a blowing burner, 3 is a side wall, 6 is a blowing furnace inner chamber, 7 is an inner wall, 8 is a top wall of the inner chamber, 9 is a hearth, and 12 is a melting furnace. A metal holding furnace, 13 is a through hole, and 16 is a drain hole.

Claims (1)

[Scope of Claims] 1. The hot air from the blowing burner 2, which is arranged on the upper part of the side wall 3 and which is capable of separating a plurality of metals due to the difference in melting temperature of different metals, is transferred into the blowing furnace. It has a downwardly inclined inner chamber top wall 8 that guides the inner wall 7 directly opposite to the first side wall 3 in the chamber 6 so as to come into oblique contact with the inner wall 7, and is inclined downwardly from the bottom of the inner wall 7 in the direction of the first side wall 3. , a metal blowing furnace having a hearth 9 which allows hot air reversed by the inner wall 7 to flow directly above the floor surface, appropriately melts objects to be heated placed and stacked on the floor surface, and causes molten metal to flow down. 1, and 1 side wall 3 of the metal blowing furnace 1
The molten metal and hot air flowing downstream of the hearth 9 are received through a through hole 12 bored in the lower end corresponding to the downward end of the hearth 9, and the molten metal is appropriately discharged through a lower drain hole 16. A metal blowing device which integrally connects both of the molten metal holding furnaces 12 as described above. 2. The metal blowing device according to claim 1, wherein the molten metal holding furnace 12 includes a holding furnace auxiliary burner 18 for temperature raising.