JPH10286528A - Device for sorting metal waste - Google Patents

Abstract

PROBLEM TO BE SOLVED: To enable the positive sorting by the specific gravity of a metal waste mixture of non-ferrous metals of different specific gravities. SOLUTION: This sorting device for metal wastes has a rolling mill 8 provided as a pretreating device for a sorting device by specific gravity difference which sort non-ferrous metals by specific gravity differences. A metal waste mixture 1B of non-ferrous metals remaining unremoved after rejecting iron 1A from a metal waste 1 by magnetic sorting, is collapsed using the rolling mill 8 to be highly identified. Further, the non-ferrous metals are arranged by their specific gravities and are loaded into a sorter 6 using a specific gravity difference to performed the storing work by specific gravity difference.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sorting apparatus used for sorting non-ferrous metals among metal wastes such as shredder dust of automobiles and household electric appliances which have been disposed of.

[0002]

2. Description of the Related Art Among metal wastes such as shredder dust of this kind, a technique of recovering and recycling iron by magnetic separation has already been established. On the other hand, non-ferrous metals have been mainly sorted by hand until now, but in recent years, as a mechanical sorting method, specific gravity using the difference in specific gravity of metals such as heavy liquid sorting and liquid sand sorting has been used. Discrimination is being conducted.

[0003]

However, when a mixed metal waste mixed with non-ferrous metals having different specific gravities is separated by a conventional specific gravity difference sorter, the specific gravities of the respective metals are uniform at the pre-sorting treatment stage. In many cases, the specific gravity difference sorting ability is not sufficient. In other words, when the mixed metal waste of non-ferrous metals having different specific gravities after the iron has been selectively removed includes, for example, those having a large hollow portion such as a copper tube or an aluminum tube, these hollow portions are removed. In such a case, the specific gravity is apparently smaller than the actual specific gravity, so that the specific gravity difference sorting ability of the non-ferrous metal is deteriorated, and the non-ferrous metal cannot be reliably separated.

[0004] Therefore, the present invention provides a method of sorting metal wastes that can be subjected to specific gravity difference sorting by equalizing the specific gravity of each non-ferrous metal mixed metal waste having a specific gravity difference before performing the specific gravity difference sorting. It is intended to provide a sorting device.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention sorts and removes iron in crushed metal waste, and then uses non-ferrous metal by using a specific gravity difference by a specific gravity difference sorter. In the metal waste sorting device that is configured to perform mechanical sorting, a crushing device for crushing mixed metal waste of nonferrous metals having different specific gravities is installed upstream of the non-ferrous metal specific gravity difference sorter, As a pretreatment for differential sorting, a configuration is adopted in which mixed metal waste is crushed.

When the mixed metal waste is subjected to a crushing device as a pretreatment for specific gravity difference sorting, the material is densified by crushing and the specific gravity of each metal is made uniform. Specific gravity difference sorting is performed.

Further, a cutting machine is placed between the crushing device and the specific gravity difference sorter, and the mixed metal waste crushed by the crushing device is removed.
By adding a configuration that cuts with a cutting machine and then transfers to a specific gravity difference sorting machine, the shape and size of the crushed mixed metal waste can be made uniform by cutting with a cutting machine, Sorting can be performed more reliably.

[0008]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows an embodiment of the present invention. A crusher 2 for crushing metal waste 1 such as automobiles and household appliances into shredder dust, and crushing by the crusher 2 A wind separator 4 that removes non-metals by separating the metal waste 1 transported and conveyed by the conveyor 3 by wind power, and a metal after the non-metals are removed by the wind separator 4 A magnetic separator 5 configured to adsorb and remove iron 1A from the waste 1, and a mixed metal waste of non-ferrous metals such as copper and aluminum having different specific gravities left after the iron 1A is removed by the magnetic separator 5 In a metal waste sorting apparatus having a configuration including a specific gravity difference sorting machine 6 for sorting the objects 1B into a heavy metal 1a and a light metal 1b, a magnetic sorting machine 5 is provided as a pretreatment device for the specific gravity sorting machine 6. Non-ferrous conveyed by conveyor 7 from A rolling mill 8, which is a crushing device for crushing the mixed metal waste 1B belonging to the genus, is provided between the conveyor 7 and the specific gravity difference sorter 6, and the mixed metal waste crushed by the rolling mill 8 is provided. 1B is supplied to the specific gravity difference sorter 6.

As a pretreatment for the specific gravity sorting by the specific gravity sorting machine 6, iron 1A is extracted from the metal waste 1 by the magnetic sorting machine 5.
The mixed metal waste 1B of the non-ferrous metal after the removal is transported by the transport conveyor 7 and applied to the rolling mill 8. Since the mixed metal waste 1B is crushed when passing through the rolling mill 8, the non-ferrous metal mixed metal waste 1B having a hollow portion is densified for each non-ferrous metal. Can be substantially equalized.

Therefore, the crushed mixed metal waste 1B
Is supplied to the specific gravity difference sorter 6, since the specific gravity of the mixed metal waste 1B is made uniform for each non-ferrous metal, the sorting ability of the specific gravity difference sorter 6 is improved, and the heavy metal 1a and the light metal 1b are separated. Sorting can be performed reliably.

FIG. 2 shows another embodiment of the present invention. In a configuration similar to that shown in FIG. 1, mixed metal waste 1B crushed by a rolling mill 8 is subjected to specific gravity. A cutting machine 9 for cutting into small pieces before being put into a differential sorting machine 6 is installed between a rolling mill 8 and a specific gravity difference sorting machine 6.

In the case shown in FIG. 2, the rolling mill 8
The shape and size of the mixed metal waste 1B can be made uniform by cutting the mixed metal waste 1B after being crushed by the cutting machine 9, so that the specific gravity difference of the non-ferrous metal in the specific gravity sorter 6 Sorting can be performed more reliably.

The present invention is not limited to the above embodiment. For example, the crushing apparatus is not limited to the rolling mill 8, and the cutting machine 9 may have any structure and type. Of course, various modifications can be made without departing from the spirit of the present invention.

[0015]

As described above, according to the metal waste sorting apparatus of the present invention, the following excellent effects are exhibited. (1) In the metal waste sorting apparatus in which the iron in the crushed metal waste is sorted and removed, the non-ferrous metal is machine-sorted using a specific gravity difference by a specific gravity difference sorter, On the upstream side of the specific gravity difference sorter, a crushing device for crushing mixed metal waste of non-ferrous metals having different specific gravities is installed, and as a configuration to crush the mixed metal waste as a pretreatment of specific gravity difference sorting. As a pre-treatment for specific gravity sorting, metal waste can be densified by crushing it with a crushing device, and the specific gravity of each metal can be made uniform. Thus, non-ferrous metals can be sorted out reliably. (2) A configuration in which a cutting machine is placed between the crushing device and the specific gravity sorting machine, and the mixed metal waste crushed by the crushing device is cut by the cutting machine and then transferred to the specific gravity sorting machine. By adding, the metal waste crushed by the crushing device can be cut before entering into the specific gravity sorting machine to make its shape and size uniform, so that the non-ferrous metal sorting by the specific gravity sorting machine can be performed. It can be performed more reliably.

[Brief description of the drawings]

FIG. 1 is a schematic diagram showing one embodiment of the present invention.

FIG. 2 is a schematic diagram showing another embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Metal waste 1A Iron 1B Mixed metal waste 6 Specific gravity difference sorter 8 Rolling mill (crushing apparatus) 9 Cutting machine

Claims (2)

[Claims] 1. A metal waste sorting apparatus wherein a non-ferrous metal is machine-sorted using a specific gravity difference machine by using a specific gravity difference machine after selectively removing iron in the crushed metal waste. A crushing device for crushing mixed metal waste of non-ferrous metals having different specific gravities was installed upstream of the non-ferrous metal specific gravity difference sorter, and the mixed metal waste was crushed as a pretreatment for specific gravity difference sorting. An apparatus for sorting metal waste. 2. A cutting machine is placed between the crushing device and the specific gravity sorting machine, and the mixed metal waste crushed by the crushing device is cut by the cutting machine and then transferred to the specific gravity sorting machine. The metal waste sorting apparatus according to claim 1.