JPH0971826A - Device for recovering nonferrous metal in steel scrap - Google Patents

Abstract

PROBLEM TO BE SOLVED: To melt and recover the nonferrous metals in steel scrap contg. nonferrous melts in low melting nonferrous molten metal and to make the steel scrap usable as a raw material for steel making by vibrating a refractory perforated vessel housing the steel scrap into the melt of the low melting nonferrous metals. SOLUTION: The iron and steel scrap 13 contg. the nonferrous metals, such as Cu and Sn, is put into the cage vessel 14 which is formed of a heat resistant material to a blind cylindrical shape and has permeable small holes 14a in the bottom and flanks and is immersed into the molten metal 11 of 650 to 1,050 deg.C of the low melting nonferrous metals, such as molten Al, in a refractory melting vessel 12. A handle 14C mounted at the cage vessel 14 is vertically and longitudinally vibrated by the effect of a crank shaft 15a rotated by a motor 15b to put the molten Al 11 into and out of the inside of the cage vessel 14 from the small holes 14a, by which the molten Al is brought into contact with the iron and steel scrap 13 and the nonferrous metals, such as Cu and Sn, included in the iron and steel scrap 13 and melted and separated. The iron and steel scrap free from Cu, Sn, etc., is effectively utilized as the raw material for steel making. The Cu and Sn melted in the molten Al are separated from the Al and are effectively recovered as the nonferrous metals.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for recovering non-ferrous metal in iron scrap for removing non-ferrous metal in iron scrap, and more particularly to a non-ferrous molten metal having a melting point lower than that of iron scrap (hereinafter simply referred to as low-melting non-ferrous metal). The present invention relates to a non-ferrous metal recovery device for iron scrap capable of recovering non-ferrous metals such as copper or copper alloy and tin in the iron scrap by immersing the iron scrap in the molten metal).

[0002]

2. Description of the Related Art Conventionally, it has been widely known that scraps (or iron scraps) of automobiles, home electric appliances and the like are used as steelmaking raw materials in electric furnaces and the like. However, since non-ferrous metals such as copper and tin are contained in this iron scrap, even if scrap iron with a high content rate of this non-ferrous metal is steel-made, for example, by oxidizing the above-mentioned non-ferrous metal, the slag The non-ferrous metal cannot be removed during steelmaking by recovery, etc., and as a result, the non-ferrous metal is contained at a high content rate, which causes surface defects due to hot brittleness during rolling. However, there is a problem that the mechanical properties of the product deteriorate.

Therefore, in order to solve this problem, a so-called manual selection method for visually selecting iron and non-ferrous metal (or scrap iron containing non-ferrous metal) is widely used. Since it requires labor, it has a problem of extremely poor workability. Therefore, as a method of removing non-ferrous metal from iron scrap without relying on human power, a method of separating by utilizing the magnetic properties or specific gravity difference of iron scrap, or heating the iron scrap to remove the non-ferrous metal in the iron scrap A method (for example, a method of heating the iron scrap to a melting point of the non-ferrous metal contained in the iron scrap or more and less than the melting point of the iron scrap to remove the non-ferrous metal having a lower melting point than the iron scrap as a solution) and the like have been proposed. There is.

However, in the above-mentioned method, when non-ferrous metal such as copper adheres or is mixed in the iron scraps, the iron with non-ferrous metal adheres or is mixed depends on the adhesion ratio or the mixing ratio of the non-ferrous metal. Since there is little difference between the magnetic properties and the specific gravity of the scrap and the non-ferrous scrap, it is extremely difficult to separate and remove the nonferrous metal, and the reliability of the separation and removal is poor. For this reason, it is usually necessary to perform further human selection after separating the non-ferrous metal by using this method, which causes a problem of extremely poor workability. On the other hand, in the above method, in order to remove the non-ferrous metal, the iron scrap is heated to a high temperature not less than the melting point of the non-ferrous metal in the iron scrap and less than the melting point of the iron scrap to dissolve the non-ferrous metal, and the non-ferrous metal is dissolved. When removed as, since the solution of non-ferrous metal adheres to good quality iron scrap, the reliability of removal of non-ferrous metal is inferior, and as mentioned above, this non-ferrous metal removal work becomes high-temperature work, resulting in extremely high workability. It had the problem of being inferior. For this reason, the present situation is that it has hardly been put to practical use.

In order to solve the above problems, Japanese Patent Laid-Open No. 3-199314 discloses that molten metal aluminum, molten metal magnesium, or molten aluminum-magnesium alloy is brought into contact with solid iron scraps.
Metallic copper mixed in solid iron scrap is molten metal aluminum, molten metal magnesium or molten aluminum-
An iron scrap decoppering method has been proposed in which copper is separated and removed from iron scrap by extracting into a magnesium alloy.

[0006]

However, as a result of studying the iron scrap decoppering method described in the above-mentioned Japanese Patent Application Laid-Open No. 3-199314, the present inventor has found that molten metal aluminum has a large solubility in copper. It is most suitable for dissolving and removing copper from copper, but since the molten metal aluminum dissolves not only copper but also some iron, use a steel container (or basket container) containing iron scrap, for example. Then, this container itself gradually dissolves in the molten metal aluminum,
As a result of being thin, there is a limit to the number of times it can be used,
It has been found that there is a problem of poor reliability. Also, as copper in iron scraps, there are many so-called insulating coated copper wires whose surfaces used for generators and motors are coated with a coating such as enamel. It interferes with the contact of the copper with the molten metal aluminum and interferes with the dissolution of copper, and it is extremely difficult for copper to dissolve, and it takes a long treatment time.
It has been found that there is a problem that the workability is extremely poor.

The present invention has been made in view of the above circumstances, and is an apparatus relating to the improvement of the technique disclosed in Japanese Patent Laid-Open No. 3-199314, in which an iron basket container and a melting container are used by using an inexpensive and simple device. It is possible to prevent the dissolution of iron in the low melting point non-ferrous molten metal of the tank and to make the dissolution (or recovery) time of the non-ferrous metal in the iron scrap into the low melting point non-ferrous molten metal extremely short. It is an object of the present invention to provide a non-ferrous metal recovery device for scrap iron which has a low equipment cost and is excellent in workability and reliability.

[0008]

A method according to the above-mentioned object.
The non-ferrous metal recovery device in the iron scrap described, the iron scrap containing a non-ferrous metal such as copper is immersed in a non-ferrous molten metal having a lower melting point than the iron scrap, and the non-ferrous metal is melted in the low-melting non-ferrous molten metal. An apparatus for recovering non-ferrous metal in iron scraps to be recovered by storing a non-ferrous metal melting tank equipped with a heating source and a large number of liquid permeation small holes for accommodating the iron scraps and immersing them in the melting tank It has a basket container, a vibrating means for vibrating the basket container in the melting tank, and a carrying means for carrying the basket container in and out of the melting tank.

The non-ferrous metal recovering device for iron scraps according to claim 2 is the non-ferrous metal recovering device for iron scraps according to claim 1, wherein the basket container is provided with a handle protruding upward. The vibrating means includes a crank shaft that holds the handle and a motor that rotates the crank shaft.

The non-ferrous metal recovery device for iron scraps according to claim 3 is the non-ferrous metal recovery device for iron scraps according to claim 1, wherein the basket container is provided with a handle protruding upward, The vibrating means comprises a cylinder for vertically moving the upper part of the handle.

The non-ferrous metal recovery device for iron scraps according to claim 4 is the non-ferrous metal recovery device for iron scraps according to claim 1, wherein the basket container is provided with a handle protruding upward. The vibrating means includes a cam plate that is vertically driven above the handle, and a motor that drives the cam plate.

Further, in the nonferrous metal recovering device for iron scrap according to claim 5, the iron scrap containing the nonferrous metal such as copper is immersed in a nonferrous molten metal having a melting point lower than that of the iron scrap to obtain the nonmelting nonferrous metal. A non-ferrous metal recovery device for recovering non-ferrous metal by melting the non-ferrous metal in a molten metal and collecting the non-ferrous metal with a heating source, and a large number of liquid permeation small holes to store the iron scrap. Then, a cylindrical basket container to be immersed in the dissolution tank, a rotation drive means for rotating the basket container in the dissolution tank, and a conveying means for moving the basket container into and out of the dissolution tank. Have.

Further, in the nonferrous metal recovering apparatus for iron scrap according to claim 6, the iron scrap containing the nonferrous metal such as copper is immersed in the non-ferrous molten metal having a low melting point lower than the magnetic transformation temperature of the iron scrap. A non-ferrous metal recovery device for recovering the non-ferrous metal by melting the non-ferrous metal in the low-melting-point non-ferrous metal, the non-ferrous metal melting tank having a heating source, and the non-ferrous metal in the non-ferrous metal. It has a magnetizing means for taking out the iron scraps after melting from the melting tank, and a conveying means for moving the magnetizing means.

The non-ferrous metal recovering device for iron scraps according to claim 7 is the non-ferrous metal recovering device for iron scraps according to any one of claims 1 to 6, wherein a stirring blade is provided in the melting tank. Alternatively, stirring means utilizing electromagnetic induction is provided.

Further, the non-ferrous metal recovery device for iron scrap according to claim 8 is immersed in the melting tank in the non-ferrous metal recovery device for iron scrap according to any one of claims 1 to 7. A draining vibrating means is provided for removing the iron scrap from which the non-ferrous metal has been removed from the melting tank to perform draining.

The non-ferrous metal recovering apparatus for iron scrap according to claim 9 is the non-ferrous metal recovering apparatus for iron scrap according to any one of claims 1 to 8, wherein the melting tank has the An ultrasonic oscillating source is provided for applying ultrasonic vibration to the low-melting non-ferrous molten metal in the melting tank.

The shape of the melting tank is not particularly limited, but various shapes such as a box shape formed by closing one end of a frame body having, for example, a substantially cylindrical shape or a substantially rectangular tube shape. Is mentioned. The material of the melting tank is not particularly limited, and various materials such as various heat resistant steels and various refractory materials can be used. The heating source of the melting tank is not particularly limited, and various sources such as a gas burner, an electric heater or induction heating can be used. Further, as will be described later, since it is necessary to hold the low melting point non-ferrous molten metal within a predetermined temperature range, it is possible to save labor by providing a temperature holding means such as a thermostat. Further, the low melting point non-ferrous molten metal contained in the melting tank in a molten state has a melting point lower than the melting point of iron (mp = 1583 ° C.), preferably lower than the melting point of the non-ferrous metal contained in the iron scrap. Containing a metal, specifically aluminum (Al: mp = 660.37 ° C.,
b. p. = 2467 ° C.), magnesium (Mg: m.
p. = 649 ° C, b. p. = 1090 ° C), Al-Mg
Alloys and the like. Further, the mixing ratio of the Al-Mg alloy is not particularly specified, and is appropriately selected depending on the quality of iron scrap and the iron yield.

In the nonferrous metal recovering apparatus for iron scrap of the present invention, the low melting point nonferrous molten metal is, for example, molten aluminum (or aluminum solution).
Alternatively, molten magnesium (or magnesium solution) or molten Al-Mg alloy (or Al-M)
It is possible to recover copper (Cu), tin (Sn), zinc (Zn), lead (Pb), aluminum (Al), magnesium (Mg), etc. Further, in the case of recovering copper using the various low-melting point non-ferrous molten metals described above, when an aluminum solution is used for the low-melting point non-ferrous molten metal, the copper in the iron scrap is well dissolved in the low-melting point non-ferrous molten metal and slightly Although iron is also dissolved, when a magnesium solution is used for the low melting point non-ferrous molten metal, although the recovery rate of copper is slightly lowered, the amount of iron dissolved can be significantly reduced. Further, when an Al-Mg solution is used for the low melting point non-ferrous molten metal, the advantages of both of them can be utilized, and copper can be recovered well without almost dissolving the iron in the iron scrap.

The heating temperature of these low-melting non-ferrous molten metals is preferably controlled appropriately within a temperature range of 50 ° C. or more above the melting points of the respective metals and not volatilizing. Specifically, when Al is used as the low melting point non-ferrous molten metal, the melting temperature (t _Al ) of the low melting point non-ferrous molten metal
As 710 ° C. ≦ t _Al ≦ 1100 ° C., preferably 75
0 ° C. ≦ t _Al ≦ 1050 ° C. Further, when Mg is used for the low melting point non-ferrous molten metal, the melting temperature (t _Mg ) of the low melting point non-ferrous molten metal is 700 ° C. ≦ t _Mg ≦ 1050 ° C., preferably Is preferably 750 ° C. ≦ t _Mg ≦ 1000 ° C. When Al is used as the low melting point non-ferrous molten metal, if the temperature of the Al solution is less than 750 ° C., it becomes difficult to dissolve the Al solution in a short time, or the viscosity of the Al solution increases to dissolve the non-ferrous metal in the iron scrap. It tends to be difficult to do so, and the amount of non-ferrous metal attached to iron tends to increase, especially at temperatures below 710 ° C. Further, when the temperature of the Al solution exceeds 1050 ° C., the Al solution is likely to be volatilized and the running cost tends to increase, and particularly when it exceeds 1100 ° C., the tendency becomes remarkable. In addition, the low melting point non-ferrous molten metal is Mg
When the temperature of the Mg solution is less than 750 ° C., the M
The g solution tends to be difficult to dissolve in a short time, the viscosity of the Mg solution increases to make it difficult to dissolve the non-ferrous metal in the iron scrap, and the amount of the non-ferrous metal attached to iron tends to increase.
If the temperature is lower than 0 ° C, the tendency becomes remarkable. Further, when the temperature of the Mg solution exceeds 1000 ° C., the Mg solution tends to volatilize and the running cost tends to increase.
When the temperature exceeds 50 ° C, the tendency becomes remarkable. In addition, when an Al-Mg solution is used for the low melting point non-ferrous molten metal, FIG.
It is appropriately selected within a temperature range not lower than 50 ° C. of the liquidus line indicated by medium L ₁ and not volatilizing. By setting the temperature of the low melting point non-ferrous molten metal within the above range, the low melting point non-ferrous molten metal can be liquefied, and the non-ferrous metal in the iron scrap can be efficiently recovered. Further, it is preferable that the low melting point non-ferrous molten metal is mixed with iron in a saturated state. It is possible to prevent the iron content in iron basket containers and iron scraps from dissolving in the low melting point non-ferrous molten metal, so that the life of the basket container can be extended and the iron scraps from which the non-ferrous metal is recovered This is because the yield can be increased. Note that FIG. 15 is an Al-Mg binary system phase diagram, in which the vertical axis represents temperature and the horizontal axis in the figure represents the content of Mg (% by weight) relative to Al.
(Or wt%) or atomic% (or at%)).

Further, the shape of the basket container is not particularly limited, and for example, it is hollow and has a substantially cylindrical shape in appearance, a substantially prismatic shape,
Examples include various shapes such as a substantially spherical shape, a substantially hemispherical shape, a substantially pyramidal shape, and a substantially conical shape. Usually, a hollow container having a substantially cylindrical shape or a substantially prismatic shape as viewed from the outside is preferable because it is excellent in manufacturing workability and handleability. The material of the basket container is not particularly limited, and examples thereof include heat resistant steel and refractory materials. In addition, the basket container is formed by forming a large number of liquid permeation small holes on its peripheral wall. Specifically, a perforated plate such as punching metal is assembled by welding or the like in a predetermined shape, or an iron support post is assembled in a predetermined shape and then covered to have a mesh of a predetermined size. (Or a net-like object), or a net-like object with a net-like object attached to a frame of a predetermined shape is assembled into a predetermined shape, and a refractory material is sprayed on the surface of the basket container manufactured by the above-mentioned operation. It is configured by coating or coating. In addition, protrusions and irregularities may be provided inside the basket container. When the basket container is vibrated, not only the iron scraps in the basket container collide with each other, but also the projections and irregularities collide with each other to remove the coating such as the insulating coating applied to the surface of the non-ferrous metal. This is because the recovery efficiency of non-ferrous metals can be increased. Further, the size of the liquid permeation small hole is such that when the basket container is immersed in the low melting point non-ferrous molten metal in the melting tank, the low melting point non-ferrous molten metal penetrates into the basket container and contacts with iron scraps. There is no particular limitation as long as it is possible and the size of the iron scrap does not drop from the basket container into the melting tank. The shape of the liquid-permeable small holes is not particularly limited, and various shapes such as a substantially circular shape such as a perfect circle shape or an elliptical shape, or a substantially angular shape such as a substantially triangular shape or a quadrangular shape may be used. it can.

As the motor, various motors such as a DC motor or an AC motor, a hydraulic power transmission (having a reciprocating or rotary hydraulic motor connected to a reciprocating pump or a rotary pump), and the like can be mentioned. To be The cylinder may be an air cylinder, a hydraulic cylinder, or the like. Furthermore, since the nonferrous metal recovery device for iron scrap of the present invention is usually used in a factory, an overhead crane or the like is used as the transportation means. When the basket container is rotationally driven using the motor, the rotation speed of the basket container at an initial stage (in other words, about 1/5 to 1/4 of the total immersion time, for example, about 5 to 20 minutes) is It is preferable that the rotation speed range is not less than 1.3 times the normal and the iron waste stored in the basket container is not fixed to the inner peripheral surface of the basket container by centrifugal force. By colliding iron scraps with each other, the coating such as enamel applied to the surface of non-ferrous metal (eg, copper wire) contained in the iron scraps can be mechanically destroyed. It is possible to increase the contact rate of the non-ferrous metal with the non-ferrous metal. As a result, the solubility of the non-ferrous metal in the low-melting non-ferrous molten metal can be increased, and the removal processing time of the non-ferrous metal in the iron scrap can be extremely shortened. .

The stirring blade is not particularly specified. Further, as the cam plate, in addition to a plate having a periphery whose distance from the rotating shaft is not constant, an eccentric cam having an eccentric rotating shaft or the like can be used. As the magnetic attachment means, a permanent magnet such as KS steel, an OP magnet, a ferrite magnet, an alnico magnet, or a so-called electromagnet in which an insulating coated copper wire is wound around a soft iron core or the like can be used. In particular, when an electromagnet or the like is used as the magnetizing means, the strength of the magnetic force of the electromagnet can be easily adjusted by changing the value of the current supplied to the insulation-coated copper wire of the electromagnet. The power loss can be reduced by adjusting the magnetic force of the electromagnet according to the amount (or weight) of iron scrap and the like, and the running cost can be reduced. In addition, as an ultrasonic wave source, a magnetostrictive oscillator using a magnetostrictive phenomenon such as ferrite or nickel, an electrostrictive oscillator such as a barium titanate porcelain or a lead zirconate titanate porcelain, a crystal utilizing a piezoelectric phenomenon of quartz Examples thereof include those in which a vibrator or the like is driven by a vacuum tube oscillator or the like. Examples of the liquid-cutting vibrating means include a vibrating screen and a warm air blower.

[0023]

In the non-ferrous metal recovery apparatus for iron scrap according to claims 1 to 5, a non-ferrous metal melting tank equipped with a heating source and a large number of liquid permeation small holes are formed to store the iron scrap in the melting tank. By having a basket container to be immersed in the container, a vibrating means for vibrating the basket container in a melting tank or a rotation driving means for rotating the basket container, and a carrying means for carrying the basket container into and out of the melting tank. Since the iron scrap containing the non-ferrous metal can be immersed in the low melting point non-ferrous molten metal in the melting tank in a basket container, the non-ferrous metal can be recovered in the low melting point non-ferrous molten metal. . In addition, by saturating the iron content in the low melting point non-ferrous molten metal, the iron content in the iron scrap can be dissolved in the low melting point non-ferrous molten metal, and even if an iron melting tank or basket container is used, Melting point It is possible to prevent the melting tank or basket container from being melted in the non-ferrous molten metal. Further, by vibrating or rotating the basket container, it is possible to stir the low-melting non-ferrous metal, and as a result, even if the non-ferrous metal concentration in the low-melting non-ferrous metal near the iron scrap is high during the recovery process of the non-ferrous metal. Even if the temperature rises, the concentration of the low melting point non-ferrous molten metal in the melting tank can be made substantially constant by stirring the low melting point non-ferrous molten metal. Further, by vibrating or rotating the basket container, the iron scraps in the basket container can be made to collide with each other. Therefore, even non-ferrous metal having a coating on the surface such as a copper wire can be mechanically affected by the impact at the time of the collision. Can be peeled off.

Particularly, in the non-ferrous metal recovering apparatus for iron scraps according to the second to fourth aspects, the basket container is provided with a handle projecting upward, and a crank shaft for locking the handle as a vibrating means and the crank shaft. By providing a rotating motor, a cylinder that vertically drives the upper part of the handle, or a cam plate that vertically drives the upper part of the handle and a motor that drives the cam plate,
The basket container can be moved in a circular motion in a side view or moved up and down, and as a result, the low-melting point non-ferrous molten metal is further stirred to extremely reduce the concentration of non-ferrous metal in the low-melting point non-ferrous molten metal near the iron scrap. At the same time, the iron scraps in the basket can be made to collide with each other to mechanically separate the coating.

Particularly, in the non-ferrous metal recovery apparatus for iron scrap according to claim 5, a non-ferrous metal melting tank provided with a heating source and a large number of liquid permeation small holes are formed in the melting tank for storing iron scrap. By having a cylindrical basket container to be immersed in the container, a rotation driving means for rotating the basket container in the melting tank and a conveying means for moving the basket container into and out of the melting tank, the basket container can be vertically moved. It is possible to make a rotational movement around the rotational axis of the direction or the rotational axis of the horizontal direction, etc. As a result, as described above,
By stirring the low melting point non-ferrous molten metal, the concentration of non-ferrous metal in the low melting point non-ferrous molten metal near the iron scrap can be made extremely small, and the iron scraps in the cage can collide with each other to mechanically separate the coating. be able to.

Particularly, in the non-ferrous metal recovering apparatus for iron scrap according to claim 6, the non-ferrous metal melting tank provided with a heating source and the iron scrap after the non-ferrous metal in the iron scrap are melted are melted. The non-ferrous metal in the iron scrap is melted by immersing the iron scrap in the low-melting non-ferrous metal by having the magnetizing means for taking out from the bath and the conveying means for moving the magnetizing means. It can be dissolved in metal. In addition, the temperature range of the low melting point non-ferrous molten metal is set to the magnetic transformation temperature (A ₂ = 723
By setting the temperature to less than (° C.), it is possible to prevent the iron scraps or the magnetically adhering means from magnetically transforming, and the iron scraps can be easily magnetically adhered to the magnetically adhering means and conveyed. In addition, since iron scraps are simply immersed in the low melting point non-ferrous metal, it is not necessary to provide a stirring means although the recovery time of the non-ferrous metal in the iron scraps may be slightly longer than that having a stirring means. The workability can be significantly reduced and the workability of recovering the iron scrap from which the non-ferrous metal has been removed can be significantly improved. In addition, by arbitrarily selecting the size of the magnetizing means and the strength of the magnetic force according to the volume of the melting tank and the amount (or weight) of iron scrap,
It is possible to efficiently perform the recovery work without increasing the magnetic force unnecessarily and magnetically attaching the magnetizing means to the melting tank. In particular, when an electromagnet is used as the magnetizing means, the magnetic force of the electromagnet can be easily adjusted, so that power loss can be reduced and running cost can be reduced.

Particularly, in the nonferrous metal recovery apparatus for iron scrap according to claim 7, the melting tank is provided with a stirring blade or a stirring means utilizing electromagnetic induction so that the iron scrap is recovered during the recovery processing of the nonferrous metal. Even if the non-ferrous metal concentration in the low melting point non-ferrous molten metal in the vicinity becomes high, the concentration of the low melting point non-ferrous molten metal in the melting tank can be made substantially constant by stirring the low melting point non-ferrous molten metal, The non-ferrous metal concentration in the low melting point non-ferrous molten metal near the iron scrap can be made extremely small.

In particular, in the nonferrous metal recovery apparatus for iron scrap according to the present invention, the liquid scraping vibrating means for removing the iron scrap from which the nonferrous metal immersed in the melting tank is removed from the melting tank and draining the liquid. By providing, since it is possible to quickly remove the low melting point non-ferrous molten metal adhering to the surface of the iron scrap from which the non-ferrous metal has been removed, the low melting point non-ferrous molten metal is contained in the steelmaking produced using the iron scrap. Can be prevented.

Particularly, in the nonferrous metal recovering apparatus for iron scrap according to claim 9, by providing an ultrasonic wave oscillating source in the melting tank, the non-ferrous metal having a low melting point in the vicinity of the iron scrap is recovered during the recovery processing of the nonferrous metal. Even if the concentration of non-ferrous metal in the melting point becomes high, the concentration of the low-melting point non-ferrous metal in the melting tank can be made substantially constant by stirring the low-melting point non-ferrous metal in the ultrasonic oscillation source. The non-ferrous metal concentration in the low melting point non-ferrous molten metal can be made extremely small. Further, by vibrating the iron scraps themselves or the iron scraps by transmitting the vibration imparted to the low melting point non-ferrous molten metal to the iron scraps, the coating film on the surface of the iron scraps can be peeled off.

[0030]

In the nonferrous metal recovery apparatus for iron scraps according to claims 1 to 5, the nonferrous metal in the iron scraps and the low melting point nonferrous molten metal are brought into contact with each other, and the nonferrous metal in the low melting point nonferrous molten metal is contacted. Since the metal can be recovered, the amount of non-ferrous metal in the iron scrap can be reduced and a good steelmaking raw material can be manufactured.
Further, by saturating the iron content in the low melting point non-ferrous molten metal, it is possible to prolong the service life of the melting tank and the basket container and increase the yield of iron in the iron scrap. Furthermore, by vibrating or rotating the basket container, the low-melting point non-ferrous metal can be stirred to reduce the concentration of the non-ferrous metal in the low-melting point non-ferrous metal near the iron scrap, and the dissolution of the non-ferrous metal can be accelerated. Since the iron scraps in the basket container can be made to collide with each other to separate the coating film on the surface, the processing time can be extremely shortened.

Particularly, in the non-ferrous metal recovering apparatus for iron scrap according to claims 2 to 4, the low melting point non-ferrous molten metal is stirred by moving the basket container in a substantially circular motion or up and down in a side view to the vicinity of the iron scrap. Since it is possible to accelerate the dissolution of the non-ferrous metal by making the concentration of the non-ferrous metal in the low-melting point non-ferrous molten metal extremely small, and to collide the iron scraps in the basket container to separate the surface coating, The processing time can be extremely shortened.

Particularly, in the non-ferrous metal recovering apparatus for iron scraps according to the fifth aspect, the basket container is rotated around a vertical axis of rotation or a horizontal axis of rotation, and the same as above. In addition, the processing time can be extremely shortened by stirring the low melting point non-ferrous molten metal and colliding the iron scraps in the basket container.

Particularly, in the non-ferrous metal recovering device for iron scrap according to claim 6, the non-ferrous metal in the iron scrap is dissolved in the low-melting non-ferrous metal by immersing the iron scrap in the low-melting non-ferrous metal. Therefore, the amount of non-ferrous metal in the iron scrap can be reduced, and a good steelmaking raw material can be manufactured.
Further, since iron scraps in the low melting point non-ferrous molten metal can be easily separated and taken out by the magnetizing means, workability is good and equipment cost can be reduced, and running cost can be extremely reduced.

Particularly, in the non-ferrous metal recovering device for iron scrap according to claim 7, by stirring the low melting point non-ferrous metal, the low melting point non-ferrous metal in the vicinity of the iron scrap with respect to the non-ferrous metal in the iron scrap is agitated. By making the non-ferrous metal concentration of 1 extremely low, the dissolution of the non-ferrous metal can be accelerated, and the processing time can be shortened extremely.

In particular, in the nonferrous metal recovering apparatus for iron scrap according to claim 8, the low melting point nonferrous molten metal adhering to the surface of the iron scrap is quickly removed to reduce the amount of nonferrous metal in the iron scrap. Thus, a good steelmaking raw material can be manufactured.

Particularly, in the non-ferrous metal recovering apparatus for iron scrap according to claim 9, by vibrating the iron scrap and the basket container, the low melting point non-ferrous molten metal is further stirred and the iron scraps in the basket container are mixed with each other. Can be collided with each other, and the processing time can be extremely shortened.

[0037]

BEST MODE FOR CARRYING OUT THE INVENTION Next, referring to the attached drawings, an embodiment in which the present invention is embodied will be described to provide an understanding of the present invention. Note that the same reference numerals are used for the same configurations in the respective embodiments, and description thereof is omitted.

Here, FIG. 1 is a schematic configuration diagram of an apparatus for recovering non-ferrous metal in iron scraps according to the first embodiment of the present invention, FIG.
FIG. 2A is a side view of a main part of the same handle, FIG. 2B is a side view of a main part of the other handle, and FIG. 3 is a nonferrous metal recovery device for iron scrap according to a second embodiment of the present invention. FIG. 4 is a side view of a main part of the handle, FIG. 5 is a schematic configuration view of a non-ferrous metal recovering device for iron scrap according to a third embodiment of the present invention, and FIG. 6 (a) is the same. FIG. 6 (b) is an explanatory view of the hooked state of the handle and the cam plate, FIG. 6 (b) is an explanatory view of the hooked state of the other handle and the cam plate, and FIG. 7 is the iron scrap according to the fourth embodiment of the present invention. 8 is a schematic configuration diagram of the non-ferrous metal recovery device of FIG. 8, FIG. 8 is a schematic configuration diagram of the non-ferrous metal recovery device in iron scrap according to the fifth embodiment of the present invention, and FIG.
10 is a schematic configuration diagram of a non-ferrous metal recovery device for iron scrap according to the embodiment of the present invention, FIG. 10 is a schematic configuration diagram of a non-ferrous metal recovery device for iron scrap according to the seventh embodiment of the present invention, and FIG. The schematic block diagram of the nonferrous-metal recovery apparatus in the iron scrap which concerns on 8th Embodiment of invention, FIG. 12 is the schematic block diagram of the nonferrous-metal recovery apparatus in the iron scrap which concerns on 9th Embodiment of this invention, FIG. 13 is a plan view of the basket container and the stirring means, and FIG. 14 is a schematic configuration diagram of an apparatus for recovering non-ferrous metal in iron scrap according to a tenth embodiment of the present invention.

As shown in FIGS. 1 and 2 (a), a nonferrous metal recovering apparatus 10 for scrap iron according to the first embodiment of the present invention.
Is a melting tank 12 in which the low melting point non-ferrous molten metal 11 is placed, a basket container 14 in which the iron scrap 13 is stored, and the basket container 14 in the melting tank 1
Vibrating means 15 for vibrating the container 2 and basket container 1
4 is included in the dissolution tank 12 and is conveyed. These will be described in detail below.

The melting tank 12 is made of a heat-resistant material such as heat-resistant steel or a refractory and is formed in a substantially box-like shape. In addition, this melting tank 1
In order to keep the low melting point non-ferrous molten metal 11 such as an aluminum solution (or an Al solution) contained in the melting tank 12 in a liquid state, a constant temperature in a temperature range of about 650 ° C. to 1050 ° C. is maintained. Therefore, a heating source (not shown) such as a gas burner, an electric heater, or induction heating is provided.

The basket container 14 is formed of a heat-resistant material such as heat-resistant steel or refractory into a substantially cylindrical shape with one end closed.
Further, the basket container 14 is provided on the peripheral wall of the basket container 14 with the dissolution tank 1
When soaked in the low melting point non-ferrous molten metal 11 in 2, the iron scrap 13 containing the non-ferrous metal such as copper contained in the basket container 14 and the low melting point non-ferrous molten metal 11 are contacted with a large number of substantially circles. A liquid-permeable small hole 14a having a shape is formed.

Further, on the upper peripheral wall of the basket container 14, short shaft-shaped and substantially rod-shaped support shafts 14b are provided at substantially rotationally symmetric positions thereof, and each support shaft 14b is bent into a substantially U-shape in a side view. The formed grip 14c is rotatably provided with its both ends pivotally attached. Further, as shown in FIG. 2A, the handle 14c is provided with a hooking portion 14d formed in a curved shape so as to hook the handle 14c on a crank shaft 15a of a vibrating means 15 described later. ing.

Further, the hook 14d has a handle 14
In order to prevent the basket container 14 from falling when the basket container 14 is vibrated while the c is hooked on the crank shaft 15a, the handle 14c is disengaged from the crank shaft 15a.
i is rotatably attached. This stopper 14i
Is formed in a substantially U-shape in a side view, and the hook 1 is provided from one side thereof.
It is rotatable by a rotating shaft 14j that penetrates through the base of 4d. A through hole 14k is formed at one end of the stopper 14i.
By locking a rod-shaped member (not shown) having a hook-shaped hook or the like at its tip, the stopper 14i can be easily rotated to insert the crankshaft 15a into the hook 14d.

In addition, at a substantially central portion of the zenith of the handle 14c of the basket container 14, the basket container 14 is conveyed by a conveying means 1 such as an overhead crane.
A hook 14f for hanging is attached by screwing or the like in order to move in and out of the melting tank 12 and convey it at 6.

The vibrating means 15 includes a crank shaft 15a for locking the handle 14c of the basket container 14, and a crank shaft 15a.
The motor 15b such as a hydraulic transmission that rotates a and the motor 1
And a transmission mechanism 15f for transmitting the rotational driving force of 5b. The crankshaft 15a is formed of a substantially rod-shaped material having toughness, such as steel or cast steel, and is bent and formed with its substantial center removed from the axial center indicated by the alternate long and short dash line in FIG. Further, the crankshaft 15a has bearings 17b of the supporting portions 17a of the supporting bases 17 provided on both sides of the melting tank 12 at both ends thereof.
Each of them is rotatably attached between the support bases 17 by being inserted into each of them.

A motor 15b is mounted on one of the supports 17 so as to be off the axis of the crankshaft 15a. A drive gear 15d is attached to the rotary shaft 15c of the motor 15b, and a driven gear 15 that meshes with the drive gear 15d at one end of the crank shaft 15a and transmits the rotational driving force of the motor 15b to the crank shaft 15a.
e is attached. The drive gear 15d and the driven gear 15e constitute a transmission mechanism 15f.

Next, a method for recovering non-ferrous metal in iron scrap using the non-ferrous metal recovering device 10 in iron scrap according to the first embodiment of the present invention will be described. First, after putting the iron scraps 13 in the basket container 14, the hanging hooks 14f are hooked by the transporting means 16 to suspend the basket container 14, and then the basket container 14 is transported to above the melting tank 12. . Next, the basket container 14 is lowered, and the hook 14c of the handle 14c is attached to the crankshaft 15a.
Hook. Thereby, the iron scraps 13 in the basket container 14 can be immersed in the low melting point non-ferrous molten metal 11 in the melting tank 12 having a temperature of about 650 ° C to 1050 ° C.

Then, by driving the motor 15b, the basket container 14 hooked on the crankshaft 15a is moved up and down and back and forth so as to draw a substantially circle when viewed from the side. This allows
Due to the high temperature of the low melting point non-ferrous molten metal 11 in the melting tank 12 and the like, the non-ferrous metal in the iron scrap 13 is dissolved in the low melting point non-ferrous molten metal 11 to remove the non-ferrous metal in the iron scrap 13. In addition to being capable of being removed, the iron scraps 13 stored in the basket container 14 collide with each other, and the iron scraps 13 having a coating such as enamel on the surface thereof, such as a copper wire, collide with each other. The coating can be mechanically peeled off to remove the non-ferrous metal in the iron scrap 13.

Next, the motor 15b is driven for a predetermined time to remove the non-ferrous metal in the iron scraps 13, the motor 15b is stopped, and then the basket container 14 is hung by using the carrying means 16, and then the predetermined amount is given. The iron scraps 13 from which the non-ferrous metal is removed in the basket container 14 are conveyed to a location and discharged. After that, the iron scrap 13 from which the non-ferrous metal has been removed is used as an iron source in, for example, a steel factory.

As described above, according to the first embodiment, the iron scrap 13 contained in the basket container 14 is immersed in the high-melting low-melting non-ferrous metal 11 in the melting tank 12, The non-ferrous metal in the iron scrap 13 can be dissolved in the low melting point non-ferrous molten metal 11, and further, the cage 14 is vibrated by the vibrating means 15 in a substantially circular motion.
The coatings on the surface of the iron scraps 13 can be mechanically peeled off by colliding each other, and as a result, the non-ferrous metal in the iron scraps 13 can be removed in a short time.

In the non-ferrous metal recovering apparatus 10 for scrap iron according to the first embodiment of the present invention, the rotational driving force of the motor 15b is transmitted to the crankshaft 15a by using the driving gear 15d and the driven gear 15e. Is, for example, the crankshaft 15a
Alternatively, sprockets (or pulleys) may be attached to the rotary shaft 15c of the motor 15b so as to face each other, and the sprockets (or pulleys) may be connected by a chain (or belt) or the like. Further, the rotation shaft 15c is opposed to one end of the crank shaft 15a mounted on the support portion 17a, and the motor 15
b may be attached, and one end of the crank shaft 15a and the rotary shaft 15c of the motor 15b may be connected by a coupling. Further, although a columnar one is used as the support stand 17, normally,
Since the non-ferrous metal recovery device 10 in the iron scrap is installed in the factory, a table (or a shelf) may be provided on the side wall of the factory and this table may be used as a support table.

Further, each hook 14d is attached to the crankshaft 15a.
Two bearings may be mounted at substantially the same interval, and insertion grooves for inserting the bearings may be provided on the surface of each hook 14d facing the bearing. This allows
Since frictional resistance can be significantly reduced as compared with the case where the crankshaft 15a is simply hooked to the hooking portion 14d, the required power of the motor 15b can be extremely reduced.

Further, as shown in FIG. 2 (b), the hook portion 1
A stopper 14e may be provided rotatably at the tip of 4d. The stopper 14e is formed into a solid or hollow shape or a substantially rod shape such as a substantially U-shaped cross section, and is rotatable by a rotation shaft 14m penetrating from one side portion thereof to a tip portion of the latching portion 14d. Has been done. Further, the stopper 14e is elastically applied in the direction of arrow B in FIG. 2 (b) by an elastic material (not shown) such as a spring wound in a helical shape.
Similarly, the stopper 14i may also be elastically applied in the direction of arrow A in FIG. 2A by an elastic material (not shown) such as a spring wound in a helical shape. Further handle 14c
It is possible to reliably prevent the basket container 14 from falling off the crankshaft 15a and falling.

Next, a nonferrous metal recovery apparatus 20 for scrap iron according to a second embodiment of the present invention will be described. Nonferrous metal recovery device 2 in iron scrap according to the second embodiment of the present invention
0 is different from the non-ferrous metal recovery apparatus 10 in iron scrap according to the first embodiment of the present invention, as shown in FIGS. 3 and 4, the basket container 21 has a substantially cylindrical shape and both end portions thereof. And a rotatable handle 21c provided on the support shaft 14b of the basket container 21 are bent and formed so as to project in a direction substantially orthogonal to the longitudinal direction, and the bent forming portion 2
A point where a substantially plate-like hooking portion 21d is provided on 1g, and each support 1
The vibrating means 22 formed of a cylinder such as a hydraulic cylinder is provided on the support base portion 18 spanned between the 7 and the vibrating means at intervals substantially the same as the distance between the respective hooking portions 21d of the handle 21c. Each of the 22 movable rod portions 22a has a basket container 2
This is a point at which a hooking portion 22b having a substantially U shape in a side view is attached to hook the one hooking portion 21d.

As shown in FIG. 3, an opening 21a for loading the iron scrap 13 into the basket container 21 is formed on one side wall of the basket container 21 and covers the opening 21a. A lid plate 21h is attached by a hinge (not shown) or the like so as to be openable and closable. Of course, the formation location and the formation number of the opening 21a are not particularly limited, and one or more may be provided at other locations. Further, as shown in FIG. 4, a through hole 22c is formed in each of the hooking portions 21d and each of the hooking portions 22b so as to penetrate from each hooking portion 21d to each hooking portion 22b. By inserting the stoppers 23 into the holes 22c, it is possible to prevent the hanging portions 21d from coming off the hanging portions 22b and the basket container 21 from dropping. Further, since the rim of each hooking portion 22b is chamfered, it is possible to easily carry out the inserting work when each hooking portion 21d is inserted into each hooking portion 22b.

As a result, the iron scraps 1 placed in the basket container 21
The non-ferrous metal in the iron scrap 13 can be dissolved in the low-melting non-ferrous metal 11 by immersing 3 in the high-melting low-melting non-ferrous metal 11 in the melting tank 12. Further, the basket container 21 is moved up and down by the vibrating means 22 composed of a cylinder to collide the iron scraps 13 stored in the basket container 21 with each other, whereby the coating film of the iron scraps 13 is mechanically peeled off in a short time. It was possible to remove non-ferrous metals in iron scrap.

Next, a nonferrous metal recovering apparatus 30 for scrap iron according to a third embodiment of the present invention will be described. Nonferrous metal recovery device 3 in iron scrap according to the third embodiment of the present invention
0 is different from the non-ferrous metal recovery apparatus 10 in iron scrap according to the first embodiment of the present invention, as shown in FIGS. In addition to the point that the base portion 18 is bridged, two hook protrusions 14g are formed in front and back from one side surface of the handle 14c for hooking the basket container 14 on each support base portion 18, and the basket container In order to move 14 upward and downward, a contact point portion 14h is formed above the hooking protrusion portion 14g so as to be in contact with the protrusion portion 24b of the cam plate 24a, and the contact point portion 14h of the handle 14c is engaged with the contact point portion 14h. The point is that a motor 24 such as a hydraulic transmission having a cam plate 24a attached to the rotary shaft 24c is provided.

When the basket container 14 is inserted into the dissolution tank 12 and the two hooking protrusions 14g of the basket container 14 are hooked on the support bases 18, the basket container 14 contacts the support bases 18 respectively. One of the support bases 18 is detachably attached to the support base 17 in order to prevent the insertion from becoming impossible. Further, as shown in FIG. 6B, the eccentric cam 2 is provided above the hooking protrusion 14g to move the basket container 14 in a substantially circular motion in a side view.
Two contact parts 14n that are in contact with 4d are formed at a distance substantially the same as the outer diameter of the eccentric cam 24d, and a removable contact plate 14p is attached to the tip of each contact part 14n from each contact part 14n. Support pin 14q across the plate material 14p
May be penetrated, and a groove 18a may be further provided at a portion of each support base 18 facing the handle 14c. Also, the eccentric cam 24d
The rotary shaft 24c of the motor 24 is attached to the eccentric position.

As a result, as shown in FIG. 6 (a), by rotating the cam plate 24a via the rotary shaft 24c of the motor 24, the protrusion 24b of the cam plate 24a and the handle 1 are rotated.
The contact portion 14h of 4c is engaged and the basket container 14 moves up and down. Further, as shown in FIG. 6B, by rotating the eccentric cam 24d via the rotation shaft 24c of the motor 24,
Each contact portion 1 of the handle 14c that contacts the eccentric cam 24d
By pressing 4n and the contact plate member 14p to move the basket container 14 in a substantially circular motion in a side view, the iron scraps 13 stored in the basket container 14 can collide with each other. The film can be removed mechanically and removed in a short time. In addition, the example shown in FIG. 6A is a gravity dropping method in which the basket container 14 is immersed in the low-melting point non-ferrous molten metal 11, so that the basket container 14 may depend on the viscosity of the low-melting point non-ferrous molten metal 11. It took a long time to soak
As a result, it is considered that the time for removing the non-ferrous metal in the iron scraps becomes long. However, by using the configuration shown in FIG. 6B, the outer surface of the eccentric cam 24d has the contact portion 14n and the contact plate 14p. Since it is closely attached to the inner surface of the eccentric cam 2,
The lower contact part 14n can be pressed and easily lowered by simply rotating the 4d, and the fall time of the basket container 14 can be shortened and the removal time of the non-ferrous metal in the iron scrap can be extremely shortened. .

Next, a nonferrous metal recovery apparatus 40 for scrap iron according to a fourth embodiment of the present invention will be described. Nonferrous metal recovery device 4 in iron scrap according to the fourth embodiment of the present invention
0 is different from the non-ferrous metal recovery apparatus 20 in iron scraps according to the second embodiment of the present invention, as shown in FIG. A motor 31 such as a DC motor is provided on a handle 21c rotatably provided on each of the support shafts 21b, and the rotary shaft 31a is passed through the handle 21c via a bearing (not shown). Motor 31 with a predetermined interval at 31a
This is a point in which a pair of friction rollers 32 for transmitting the rotational driving force to the basket container 21 are provided.

As a result, the rotational driving force of the motor 31 is transmitted to the basket container 21 via the rotary shaft 31a of the motor 31 and the friction roller 32 in sequence, so that the basket container 14 is rotated about the axis of rotation indicated by the one-dot chain line in the figure. Rotate around, and basket container 21
The iron scraps 13 stored inside can collide with each other,
Similarly to the above, the coating of the iron scrap 13 can be mechanically peeled and removed in a short time. The basket container 21 has about 6
Since it rotates at a rotation speed of ~ 20 rpm, it is possible to prevent the iron scraps 13 from sticking to the inner peripheral surface of the basket container 21 due to the centrifugal force caused by the rotation of the basket container 21, and efficiently recover the non-ferrous metal. can do.

Next, a nonferrous metal recovery apparatus 50 for scrap iron according to a fifth embodiment of the present invention will be described. Nonferrous metal recovery device 5 in iron scrap according to the fifth embodiment of the present invention
0 is different from the non-ferrous metal recovery device 40 in iron scrap according to the fourth embodiment of the present invention, as shown in FIG. 8, one or a plurality of protrusions 41a are attached inside a basket container 41. At the same time, the driven gear 41b of the basket container 41 is used as the rotation driving means 42 at the point where the driven gear 41b is attached to the edge portion.
Four support rollers 42b rotatably provided below the large-diameter support ring 42a surrounding 1b and supporting the driven gear 41b, and the driven gear 41 above the support ring 42a.
The point is that a motor 42d provided with a drive gear (not shown) is provided on its rotating shaft 42c to transmit the rotational drive force to the basket container 41 via b. The support shafts 42e are respectively provided at substantially rotationally symmetrical positions of the support ring 42a.
A rotatable handle 14c is attached to the.

As a result, the rotation shaft 42 of the motor 42d
c, the driving gear and the driven gear 41b in this order to the motor 4
By transmitting the rotation driving force of 2d to the basket container 41, the basket container 41 is rotated about the axis of rotation indicated by the alternate long and short dash line in the figure, and the iron scraps 13 stored in the basket container 41 collide with each other. As described above, the coating of the iron scrap 13 can be mechanically peeled and removed in a short time.

Next, a nonferrous metal recovery apparatus 60 for scrap iron according to a sixth embodiment of the present invention will be described. Device 6 for recovering non-ferrous metal in iron scrap according to the sixth embodiment of the present invention
0 is different from the non-ferrous metal recovery device 10 in iron scrap according to the first embodiment of the present invention, as shown in FIG. A point where the scrap 13 is kept in a temperature range lower than the magnetic transformation point temperature (A ₂ = 723 ° C.), the iron scrap 13 is immersed in the melting tank 12, and a permanent magnet provided on a conveying means 16 such as an overhead crane is used. This is the point that the magnetizing means 51 such as an electromagnet is used to magnetize and convey. As a result, the processing time is somewhat longer than in the case where various vibrating means are used, but the non-ferrous metal in the iron scrap 13 can be dissolved in the low melting point non-ferrous molten metal 11 with simple equipment. Further, since the temperature of the low melting point non-ferrous molten metal 11 is set to be lower than the magnetic transformation point temperature (A ₂ = 723 ° C.) of the iron scrap 13, magnetic transformation of the magnetizing means 51 such as a permanent magnet or an electromagnet is prevented. As a result, the iron scrap 13 can always be magnetically attached. Further, the magnetizing means 51 can be used not only for taking out the iron scrap 13 from which the non-ferrous metal has been removed from the melting tank 12, but also for carrying the iron scrap 13 into the melting tank 12.

Next explained is a non-ferrous metal recovery device 70 for scrap iron according to the seventh embodiment of the invention. Non-ferrous metal recovery device 7 in iron scrap according to the seventh embodiment of the present invention
0 is different from the non-ferrous metal recovery apparatus 10 in iron scrap according to the first embodiment of the present invention, as shown in FIG. 10, after being immersed in the melting tank 12 to remove the non-ferrous metal, This is a point provided with a liquid-cutting vibrating means 61 such as a vibrating screen for draining the iron waste 13 taken out from the melting tank 12.

The liquid-cutting vibrating means 61 of the vibrating screen is
As shown in FIG. 10, in order to load the iron scraps 13 in which the non-ferrous metal has been removed by being immersed in the melting tank 12, a metal such as iron is formed into a substantially rectangular frame shape and the rim is A charging tank 61a which is expanded outward, and a low melting point non-ferrous molten metal 11 attached to the surface of the iron scrap 13 which is provided in the lower portion of the charging tank 61a and which is made of iron or the like for sieving into the storage tank 61c. A reticulate body 61b formed by attaching a reticulate body to a metal frame body, and a metal such as iron for storing the low melting point non-ferrous molten metal 11 provided under the reticulate body 61b and sieved by the reticulate body 61b Made storage tank 61c formed in a substantially rectangular shape
And the low melting point non-ferrous molten metal 11 attached to the surface of the iron scrap 13.
The vibration motor 61e provided on the bottom plate of the storage tank 61c in order to add vibration to the iron scraps 13 in order to sift out the waste, and the vibration added from the vibration motor 61e is stored in order to suppress the propagation to the installation floor 61f. Four elastic support parts 61d, such as spring materials, provided in the lower part of the tank 61c and wound helically.
And

As a result, the low melting point non-ferrous metal 11 attached to the surface of the iron scrap 13 from which the non-ferrous metal has been removed in the melting tank 12
Since it is possible to remove quickly, it is possible to prevent the low melting point non-ferrous molten metal 11 from being contained in steel making. As a result, it is possible to obtain iron scrap with a small amount of the low melting point non-ferrous molten metal 11 attached.

Next, an apparatus 80 for recovering non-ferrous metal in iron scraps according to an eighth embodiment of the present invention will be described. Nonferrous metal recovery device 8 in iron scrap according to an eighth embodiment of the present invention
0 is different from the non-ferrous metal recovery device 10 in iron scrap according to the first embodiment of the present invention, as shown in FIG. 11, a stirring means including stirring blades for stirring the low melting point non-ferrous molten metal 11. It is a point equipped with 71. The stirring means 71 is provided on a rotary shaft 72a of a motor 72 such as a DC electric motor, so that the stirring means 71 is rotated.
As a result, the low melting point non-ferrous molten metal 11 can be agitated. Therefore, when the low melting point non-ferrous molten metal 11 is not agitated, the concentration of the non-ferrous metal in the low melting point non-ferrous molten metal 11 near the iron scrap 13 becomes high. The dissolution rate can be prevented from decreasing, and as a result, the processing time can be shortened.

Next explained is a non-ferrous metal recovery device 90 for scrap iron according to the ninth embodiment of the present invention. Device 9 for recovering non-ferrous metal in iron scrap according to the ninth embodiment of the present invention
0 is different from the nonferrous metal recovery apparatus 10 in iron scrap according to the first embodiment of the present invention, as shown in FIGS. 12 and 13, the low melting point nonferrous molten metal 11 is melted for stirring. The point is that a stirring means 81 composed of three electromagnetic induction stirring devices is provided around the tank 12 at substantially equal intervals. Thereby, the low-melting point non-ferrous molten metal 11 can be electromagnetically stirred. Therefore, when the low-melting point non-ferrous molten metal 11 is not stirred, the non-ferrous metal in the low-melting point non-ferrous molten metal 11 near the iron scrap 13 is similarly stirred. It is possible to prevent the concentration from increasing and the dissolution rate of the non-ferrous metal from decreasing, thereby shortening the processing time.

Next explained is a non-ferrous metal recovering apparatus 100 for scrap iron according to the tenth embodiment of the present invention. 14 is different from the non-ferrous metal recovering apparatus 100 in iron scrap according to the tenth embodiment of the present invention in FIG. As shown, the ultrasonic wave oscillation source 91 is provided on the outer surface of the melting tank 12 in the basket container 14 immersed in the low melting point non-ferrous molten metal 11 in the melting tank 12. As a result, the low-melting point non-ferrous molten metal 11 can be vibrated by ultrasonic waves. Therefore, as described above, when the low-melting point non-ferrous molten metal 11 is not stirred,
By preventing the concentration of the non-ferrous metal in the low melting point non-ferrous molten metal 11 near the iron scrap 13 from increasing and the dissolution rate of the non-ferrous metal decreasing, and peeling the coating film on the surface of the iron scrap 13,
The processing time can be shortened.

The embodiment of the present invention has been described above.
The present invention is not limited to these embodiments, and changes in conditions and the like without departing from the spirit are all within the scope of application of the present invention.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of an apparatus for recovering non-ferrous metal in iron scrap according to a first embodiment of the present invention.

FIG. 2 (a) is a side view of a main part of the handle. (B) It is a principal part side view of the other handle.

FIG. 3 is a schematic configuration diagram of an apparatus for recovering non-ferrous metal in iron scrap according to a second embodiment of the present invention.

FIG. 4 is a side view of a main part of the handle.

FIG. 5 is a schematic configuration diagram of a nonferrous metal recovery apparatus for scrap iron according to a third embodiment of the present invention.

FIG. 6 (a) is an explanatory view of a hooked state of the handle and the cam plate. (B) It is explanatory drawing of the hooked state of another handle and a cam plate.

FIG. 7 is a schematic configuration diagram of an apparatus for recovering non-ferrous metal in iron scraps according to a fourth embodiment of the present invention.

FIG. 8 is a schematic configuration diagram of a nonferrous metal recovery device for iron scrap according to a fifth embodiment of the present invention.

FIG. 9 is a schematic configuration diagram of an apparatus for recovering non-ferrous metal in iron scraps according to a sixth embodiment of the present invention.

FIG. 10 is a schematic configuration diagram of an apparatus for recovering non-ferrous metal in iron scrap according to a seventh embodiment of the present invention.

FIG. 11 is a schematic configuration diagram of an apparatus for recovering non-ferrous metal in iron scrap according to an eighth embodiment of the present invention.

FIG. 12 is a schematic configuration diagram of an apparatus for recovering non-ferrous metal in iron scraps according to a ninth embodiment of the present invention.

FIG. 13 is a plan view of the basket container and stirring means.

FIG. 14 is a schematic configuration diagram of an apparatus for recovering non-ferrous metal in iron scraps according to a tenth embodiment of the present invention.

FIG. 15 is an Al—Mg binary system phase diagram.

[Explanation of symbols]

10 Nonferrous metal recovery device in iron scrap 11 Low melting point nonferrous molten metal 12 Melting tank 13 Iron scrap 14 Basket container 14a Liquid permeation small hole 14b Spindle 14c Handle 14d Locking part 14e Stopper 14f Hanging hook 14g Locking protrusion 14h contact part 14i stopper 14j rotating shaft 14k through hole 14m rotating shaft 14n contact part 14p contact plate 14q support pin 15 vibrating means 15a crankshaft 15b motor 15c rotating shaft 15d driving gear 15e driven gear 15f transmission mechanism 16 conveying means Support stand 17a Support section 17b Bearing 18 Support stand section 18a Groove section 20 Non-ferrous metal recovery device in iron scrap 21 Basket container 21a Opening 21b Spindle 21c Handle 21d Hooking section 21g Bending formation section 21h Lid plate 22 Vibrating means 22a Rod section 22b Hanging part 22c Through hole 23 Stop Metal fitting 24 Motor 24a Cam plate 24b Projection portion 24c Rotating shaft 24d Eccentric cam 30 Non-ferrous metal recovery device in iron scrap 31 Motor 31a Rotating shaft 32 Friction roller 33 Rotation drive means 40 Non-ferrous metal recovery device in iron scrap 41 Basket container 41a Protrusion 41b Driven gear 42 Rotational drive means 42a Support ring 42b Support roller 42c Rotation shaft 42d Motor 42e Spindle 50 Non-ferrous metal recovery device in iron scrap 51 Magnetic sticking means 60 Non-ferrous metal recovery device in iron scrap 61 Liquid cutting vibration means 61a Charging tank 61b Reticulate body 61c Storage tank 61d Elastic support portion 61e Vibration motor 61f Installation floor 70 Non-ferrous metal recovery device in iron scrap 71 Stirring means 72 Motor 72a Rotating shaft 80 Non-ferrous metal recovery device in iron scrap 81 Stirring means 90 Iron Non-ferrous metal recovery device in scrap 91 Ultrasonic oscillator 100 Non-ferrous metal in scrap Metal recovery equipment

Claims (9)

[Claims] 1. Iron scraps which are obtained by immersing iron scrap containing non-ferrous metal such as copper in a non-ferrous molten metal having a melting point lower than that of the scrap and dissolving the non-ferrous metal in the low-melting non-ferrous metal to recover. A non-ferrous metal recovery apparatus for a non-ferrous metal, comprising: a non-ferrous metal melting tank provided with a heating source; a basket container having a large number of liquid permeation small holes formed therein; An apparatus for recovering non-ferrous metal in iron scraps, comprising: a vibrating means for vibrating the container in the melting tank and a conveying means for moving the basket container into and out of the melting tank. 2. The basket container is provided with a handle projecting upward, and the vibrating means has a crank shaft for locking the handle and a motor for rotating the crank shaft. Non-ferrous metal recovery device for iron scraps in Japan. 3. The non-ferrous metal recovery apparatus for scrap iron according to claim 1, wherein the basket container is provided with a handle protruding upward, and the vibrating means is provided with a cylinder for vertically driving the upper part of the handle. . 4. The basket container is provided with a handle protruding upward, and the vibrating means has a cam plate for vertically driving the upper part of the handle and a motor for driving the cam plate. Nonferrous metal recovery device in the iron scrap described. 5. Iron scraps recovered by immersing an iron scrap containing a non-ferrous metal such as copper in a non-ferrous molten metal having a melting point lower than that of the iron scraps and dissolving the non-ferrous metal in the low-melting non-ferrous metal Which is a non-ferrous metal recovery device of: a non-ferrous metal dissolution tank equipped with a heating source, a cylindrical basket container in which a large number of liquid permeation small holes are formed and which stores the iron scraps and is immersed in the dissolution tank, An apparatus for recovering non-ferrous metal in iron scraps, comprising: a rotation driving means for rotating the basket container in the melting tank and a conveying means for moving the basket container into and out of the melting tank. . 6. An iron scrap containing a non-ferrous metal such as copper is immersed in a non-ferrous molten metal having a low melting point lower than the magnetic transformation point temperature of the iron scrap,
A non-ferrous metal recovery apparatus for recovering non-ferrous metal by dissolving the non-ferrous metal in the low-melting non-ferrous metal, the non-ferrous metal melting tank having a heating source, and the non-ferrous metal in the non-ferrous metal. An apparatus for recovering non-ferrous metal in iron scraps, comprising: a magnetizing means for taking out the iron scraps after the removal from the melting tank, and a conveying means for moving the magnetizing means. 7. The apparatus for recovering non-ferrous metal in iron scrap according to claim 1, wherein the melting tank is provided with stirring blades or stirring means utilizing electromagnetic induction. 8. The liquid-cutting vibrating means for removing the iron scrap from which the non-ferrous metal is dipped in the melting tank and taking out the liquid from the melting tank, the liquid-cutting vibrating means according to claim 1. Non-ferrous metal recovery device for iron scraps in Japan. 9. The ultrasonic oscillating source for applying ultrasonic vibration to the low-melting non-ferrous molten metal in the melting tank is provided in the melting tank. Nonferrous metal recovery device in iron scrap.