JPH0631197A - Metal recovery device - Google Patents

Abstract

PURPOSE:To use a bucket made of a reticular member for the recovery of crushed metal and to easily drain the metal by entraining the crushed metal suspending close to the surface of molten metal by the molten metal moved by the magnetic force from a magnetism generator. CONSTITUTION:Two kinds of molten metals A and B having a different sp.gr. are filled in a bath 1, and magnetism generators 5A and 5B for exerting a magnetic force on the molten metals A and B to move the molten metal in a specified direction are arranged close to the surfaces of the molten metals A and B. The crushed metal C charged into the bath 1 from a feed hopper 3 is suspended close to the surface of the molten metal A or B and entrained by the molten metal A or B moved by the magnetism generator 5A or 5B. The crushed metal C is scraped up by a bucket made of a reticular member provided to conveyors 11A and 11B and discharged outside the bath.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for recovering metal from waste such as automobiles and household appliances.

[0002]

2. Description of the Related Art Generally, when separating metal (also referred to as useful metal or valuable metal) from waste such as automobiles and household appliances, the waste is crushed by a shredder and the crushed material is crushed. Metals were separated and recovered by liquid sorting, wind sorting, magnetic sorting, etc.

However, in heavy liquid sorting, only light metals having a small specific gravity can be separated, and in wind sorting, there are restrictions due to the specific gravity and shape of the crushed material.
Further, in magnetic sorting, there is a drawback that stainless steel and non-ferrous metals cannot be separated.

As a device for solving such a defect, a device using a thermal gravity classification method (TGC method) has recently been proposed. An apparatus using this thermal gravity classification method places molten lead having a large specific gravity in the lower layer and molten zinc having a smaller specific gravity in the upper layer to determine the difference in specific gravity and melting point between the crushed material and these molten metals. It is used to separate the light metal and the heavy metal at once, regardless of whether they are ferrous or non-ferrous, and the recovery thereof has been performed by a rotary screw arranged in the molten metal.

[0005]

However, according to the structure of the metal recovery apparatus using the above-mentioned thermal gravity classification method, since the shape of the crushed material is not constant, the crushed material, that is, the crushed metal is bitten by the rotary screw. As a result, the rotary screw stops, and the rotary screw is placed in the molten metal, so that the molten metal adheres to the screw itself, causing a problem.

Therefore, an object of the present invention is to provide a metal recovery device which can solve the above problems.

[0007]

[MEANS FOR SOLVING THE PROBLEMS] In order to solve the above-mentioned problems, the metal recovery apparatus of the present invention puts two kinds of molten metals having different specific gravities into a tank into which a crushed metal is put, and A magnetic field generator that applies a magnetic force to each molten metal to move the molten metal in a predetermined direction is arranged near the surface of the, and moves with the movement of the molten metal moved by each magnetic field generator. Crushed metal crushed material,
The present invention is provided with a carry-out device having a bucket configured by a net-like member for scooping and carrying out to the outside of the tank.

[0008]

According to the above construction, when the metal crushed material is thrown into the bath, it floats near the surface of each molten metal according to its specific gravity, and the floating metal crushed material is generated by the magnetic field generator. It is moved to the side wall portion side of the tank together with the molten metal moved by the magnetic force generated by, and is scooped up by the bucket of the carry-out device and carried out to the outside.

As described above, the crushed metal floating in the vicinity of the surface of each molten metal is moved together with the molten metal moved by the action of the magnetic force. There is no risk of sticking to the screw, and because the metal crushed material is collected from the molten metal by the bucket composed of a net-like member, draining is performed smoothly, and therefore the metal crushed material can be easily collected. It can be performed.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIG. In FIG. 1, 1 is a bathtub into which the metal crushed material C is charged, a lid 2 which is an upper wall portion thereof is provided with a hopper 3 for charging the metal crushed material, and inside thereof,
Two types of first and second molten metals A and B having different specific gravities are put in predetermined amounts, and a heating device for heating the molten metals A and B in the bath to control the temperature, for example, a heater. (A burner or the like may be used) 4.

As the first molten metal A, for example, a metal having a higher specific gravity and a lower melting point than a light metal such as aluminum (eg, zinc, tin, etc.) is used, and as the second molten metal B, for example, copper is used. A metal (for example, lead) having a higher specific gravity and a lower melting point than a heavy metal such as is used. Therefore, in the state in which these molten metals A and B are put, they are divided into upper and lower two layers.

A magnetic force is applied to each of the molten metals A and B at a position below the surface of each of the molten metals A and B in the bath 1,
First and second magnetic field generators 5A and 5B for moving at least the surface layers thereof in respective predetermined directions, for example, to the side wall portions opposite to each other are arranged. For example, these magnetic field generators 5A and 5B include magnetic field generating coils 6A and 6B directly inserted into the bath 1 and the bath 1
It is composed of a power supply device (not shown) which is arranged outside and supplies a current to each of the coils 6A and 6B.

The crushed metal C moved by the coils 6A and 6B is discharged into the bathtub 1 from discharge ports 7A and 7B formed in the flange portion 1a of the bathtub 1, respectively. Bucket type first and second for
The carry-out devices 11A and 11B are provided.

These carry-out devices 11A, 11B are chains 14 wound endlessly on drive side sprockets 12A, 12B and driven side sprockets 13A, 13B.
A, 14B, and a bucket (not shown) for scooping up the suspended metal crushed material C, which is composed of a plurality of mesh members (for example, wire mesh) attached to the chains 14A, 14B at predetermined intervals. , And an electric motor (not shown) for rotating the drive side sprockets 12A, 12B.

Then, for example, the first unloading device 11A is for collecting and carrying out the crushed metal C floating on the surface of the first molten metal A, and the second unloading device 11B.
Is a crushed metal C floating near the surface of the second molten metal B.
Is to collect and carry out. Therefore, the lower end side position of the chain 14A of the first unloading device 11A is located slightly below the surface of the first molten metal A, and the lower end side position of the second unloading device 11B is the second molten metal B.
It is located slightly below the surface of the.

Numerals 15A and 15B are the carry-out devices 11
Drive side sprockets 12A and 12B in A and 11B
And the driven side sprockets 13A and 13B.

Below the outlets 7A, 7B formed in the flange portion 1a of the bath 1, the outlet 7 is provided.
The metal crushed material C dropped from A, 7B
Shoots 9A and 9B for guiding to A and 8B are arranged, respectively.

In the above structure, the crushed metal C crushed by, for example, a shredder, when charged into the bath 1 through the charging hopper 3, has a first or second molten metal A, B depending on its specific gravity. It will be in a floating state near one of the surfaces.

The suspended metal crushed material C is first and second along with the molten metals A and B which are moved to the side wall side by the coils 6A and 6B arranged near the surfaces of the molten metals A and B, respectively. It moves to the 2nd carrying-out apparatus 11A, 11B side. The magnetic field generators 5A and 5B are alternately operated to prevent the metal fragments C having different specific gravities floating on the surfaces of the molten metals A and B from being mixed with each other.

Then, the crushed metal pieces C respectively moved
Are scooped up by the buckets of the carry-out devices 11A and 11B, and the discharge ports 7A formed in the flange portions 1a,
7B, through the chutes 8A, 8B, the collection containers 9A,
You are led to 9B.

As described above, the metal crushed material C floating on the surface of each molten metal A, B along with each molten metal A, B moved by the magnetic force of the coils 6A, 6B is provided on the side wall portion side of the bath 1. Therefore, compared to the case where a mechanical moving mechanism such as a rotary screw is arranged in the molten metal, almost no trouble occurs, and the metal crushed material C moved to the side wall is Since the material is scraped up by the bucket constituted by the mesh member, the liquid can be drained smoothly, and the crushed metal C can be recovered from the molten metal without any problem.

The size of the metal crushed material C to be collected can be selected by changing the opening diameter of the mesh of the mesh member.

[0023]

As described above, according to the configuration of the present invention, the crushed metal floating in the vicinity of the surface of each molten metal is accompanied by the molten metal moved by the magnetic force from the magnetic generator,
Since it is moved to a predetermined place and separated, compared to the conventional one in which it is separated by a rotary screw arranged in the molten metal, there is no fear of the molten metal adhering to the screw, and metal crushed material Since the bucket constituted by the mesh member is used to collect the metal, the liquid can be drained smoothly, and thus the crushed metal can be easily separated and recovered from the molten metal.

[Brief description of drawings]

FIG. 1 is a side view showing a schematic configuration of a recovery device according to an embodiment of the present invention.

[Explanation of symbols]

 A, B Molten metal C Crushed metal 1 Bath 4 Heater 5A, 5B Magnetic field generator 6A, 6B Coil 11A, 11B Unloader

Claims (1)

[Claims] 1. A molten metal having different specific gravities is put in a tank in which a crushed metal is put, and a magnetic force is applied to each molten metal near the surface of each molten metal to melt the molten metal. A magnetic field generator that moves in a predetermined direction is arranged, and a crushed metal that is moved with the movement of the molten metal moved by each of these magnetic field generators is scooped up by a mesh member for carrying it out of the tank. A metal recovery device comprising a carry-out device having a configured bucket.