JPS6223943A - Aluminum recovering device - Google Patents

Abstract

PURPOSE:To recover Al out of molten Al slag at a high yield by melting Al scrap. scraping the slag on the surface into a bucket and squeezing the molten metallic Al contained in the slag out of the slag by a squeezing member. CONSTITUTION:Al scrap and Al ingots such as Al cans and Al sashes are introduced into a melting furnace A and are melted. The slag (b) floating on the surface of the molten Al (a) in this stage contains Al; therefore, the slag is scraped into the bucket C. The bucket is imposed on a pedestal 5 and is pulled up by a lifting machine 3. The greater part of the molten metal Al contained in the slag (b) gathers on the base of the bucket C by the own weight and therefore, the molten Al is returned to the furnace A through a through 19 by opening a discharge port 9 at the bottom of the bucket C. The discharge port 0 is then closed and the squeezing member 10 is lowered into the bucket C. Rotary vanes 10a at the top end thereof are rotated to separate the molten Al remaining in the slag from the slag (b). The port 9 is opened to return the molten Al through the through 19 into the furnace A. The Al in the slag is thus separated and recovered at the high recovery rate.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field of the Invention) The present invention relates to an aluminum recovery device, and more particularly to a device for efficiently recovering aluminum contained in aluminum shakers assembled in a melting furnace.

(Summary of the Invention) To recover aluminum from aluminum sashes, aluminum cans, aluminum ingots, etc., it is necessary to melt them in a melting furnace and then remove impure oxides melted and suspended in the melting furnace.

The present invention provides an apparatus for recovering aluminum from such aluminum waste, and in particular, an apparatus that can separate aluminum from slag produced in a melting furnace with good workability and recover pure aluminum with a high recovery rate. It was done for the purpose of To this end, the present invention provides an aluminum melting furnace, an aluminum slag squeezing unit disposed on the side of the melting furnace, and an aluminum slag storage bucket for collecting aluminum slag generated in the melting furnace. A regenerating device is configured, and a scraper is formed in the melting furnace to scrape and collect the aluminum slag melted and floating in the melting furnace into two buckets, and the bucket is raised and lowered in the squeezing unit. A lift is installed for
A rotary blade for separating the aluminum slag in the packet held in the raised position by the elevator into pure aluminum and slag is rotatably disposed close to the inner wall surface of the bucket, and In order to return the pure aluminum separated from the slag to the melting furnace with good workability, a stopper is provided at the bottom of the bucket, and a movable conveyor is provided to connect the lower part of the stopper with the melting furnace. Furthermore, a lid is provided to cover the bucket in the raised position, and the lid is connected to a suction machine via a tally.

By configuring the aluminum recovery device in this way, the aluminum slag generated in the melting furnace is collected in a bucket, and this bucket is transported to the squeezing unit by any means such as a forklift or a conveyor, and the upper part is lifted by an elevator and the state is The rotating blade is rotated to separate the aluminum slag into pure aluminum and slag, and the separated and precipitated aluminum is dropped onto a movable conveyor by releasing the shutoff valve, and the conveyor recirculates it to the melting furnace. According to this device, the aluminum contained in the aluminum shaking cloth can be recovered easily, with good workability, and with high purity and a high recovery rate.

(Example) Hereinafter, the present invention will be described in detail with reference to the drawings.

FIG. 1 is a plan view of an aluminum recovery device according to the present invention;
Fig. 2 is a side view, and this device consists of a melting furnace A and a throttle unit B installed on the side of the melting furnace A. Storage bucket C
Aluminum slag is collected and pure aluminum is separated from the slag in squeezing unit B.

The KF melting furnace A is a furnace in which aluminum ingots, aluminum sashes, aluminum cans, etc. are put into the furnace for melting, and the surface of the molten aluminum a contains impurities such as paint that had adhered to the waste. A substance, that is, a slag, is floating, and a bucket C is inserted into the slag opening 2 formed on the wall.
and collect the slag into the bucket C using the raking rod 1. In addition to the slag, pure aluminum is also mixed in the collected material collected in the bucket C in this way, and the mixture of the slag and aluminum collected in the bucket C in this way is used in the present invention. It is called aluminum slag C. The bucket C is a bowl-shaped body, and a discharge hole 9 for molten aluminum is formed at the bottom thereof. Reference numeral 16 denotes an opening/closing plug for the discharge hole 9, which is made of highly heat-resistant elastic ceramic and has a cone shape, and is elastically fitted into the discharge hole 9.

Next, details of the aperture unit B will be explained with reference to FIG.

3.3 is an elevator for the bucket C, 4 is a driving motor thereof, and the elevator 3.3 is for raising and lowering the bucket placed on the pedestal 5.

A weight 6 serves as a counterweight for the bucket C, and is connected to the elevator 3.3 via a pulley 7, a wire 8, etc., and reduces the load of the bucket C on the elevator 3.3. 10 is a diaphragm member, and a vertical shaft 1
It consists of an arc-shaped rotating blade 10a that is detachably attached to the lower part of the rotary blade 0c, and a straight rod-shaped overflow prevention member 10b that is attached to the upper part of the rotary blade 10a orthogonally to the rotating blade m1oa. The lower surface 10a of the rotary blade 10a is arc-shaped and comes into close sliding contact with the inner wall surface of the bucket C in the raised position. The reason why the rotating blade 10a and the preventing member 10b are made perpendicular to each other in this way is to maintain a good rotational balance. The aperture member 10 is driven by a motor 13 via a rotating shaft 11. 14 is a drive box in which a transmission system such as a reduction gear, bearings, and joints is housed.

Reference numeral 15 denotes a lid of the bucket, in the upper part of which a fitting hole 15a for the rotary shaft 11 is formed. 17
is a duct communicating with this lid I5, and its end is connected to suction 818. The lid 15 prevents dust from flying into the air when the aperture part +410 rotates, and the dust is sucked and collected by the suction device 18 through the duct 17.

19 is a movable conveyor consisting of a gutter body, and a receiving part 19a (see figure 4) formed at one end is "1".
It is located directly under the bucket C in the raised position, and the other end enters the opening 20 to the melting furnace and is arranged with a downward slope toward the opening 20, and the bucket C The aluminum flowing down from the discharge hole 9 is returned to the melting furnace. This conveyor 19 is movably disposed, and when lifting or lowering the bucket c, it is moved to the side so as not to interfere with the lifting operation (see the chain line in FIG. 1).

Note that the means for moving the conveyor I9 is a well-known means, and therefore a detailed explanation of the means will be omitted. 2
] is an operating rod for the opening/closing valve 16, which has a key part 21a formed at its tip, holds a rear end holding part 21b, and locks the opening/closing valve 16 to the key part 21a to open the above-mentioned discharge hole. 9 or with the key part 21a.
By striking 6 to break it, the discharge hole 9 is opened.

This equipment consists of the above-mentioned structure, and the aluminum recovery work will be explained next.

In the melting furnace, the slag floating on the surface of the aluminum molten material a is collected by the scraping rod 1 into a bucket C placed in the slag scraping opening 2, and the bucket C is transferred to a position directly below the elevator 3.3. Next, after moving the conveyor 19 to the side,
The bucket C is raised by A dismounting 3.3, the blade member 10a is brought close to the inner wall surface of the bucket C, and the motor 13 is driven to rotate the blade member 10a and the prevention part], and the conveyor 19 is rotated as shown in FIG. It is moved to the solid line position so that its receiving part 19a is located directly below the discharge hole 9 of the bucket C, and the other end is thrust into the opening 20 of the melting furnace A.

In this way, while the bucket C is being transferred from the slag raking port 2 to the raised position of the slag holder B, a considerable amount of the aluminum slag contained in the aluminum slag collected in the bucket C is removed due to its own weight. It has already settled at the bottom of the bucket C, so if you hold the bucket C in the raised position, operate the operating rod 21 and hit the stopper 16 to destroy it and open the discharge hole 9, it has already settled. The sedimented aluminum flows down from the discharge hole 9 to the receiving part 19a, flows on the conveyor 9, and is returned to the melting furnace A.

Once a considerable portion of the aluminum has been discharged in this way, operate the operating rod 21 again to create a new opening/closing valve 16.
is fitted into the discharge hole 9, and the blade member 10a is rotated. Then, the aluminum in the aluminum slag remaining in the packet C is separated from the slag, and the aluminum settles to the lower layer. While the rotary blade 10a (F) is rotating, the overflow of aluminum slag is prevented by the prevention member 10b, and the dust floating on the bucket C is collected by the suction machine 18 through the duct 17. Further, by appropriately inverting the rotary blade 10a, the aperture effect can be further enhanced. Next, the operation lever 2I is operated again to break the stopcock 16, and the discharge hole 9 is opened to allow the lower layer of aluminum in the packet C to flow back into the melting furnace by the conveyor 19.

If this operation is repeated several times, only the dregs will remain in the packet C at the end. After moving the conveyor 19 to the side again, the bucket C is lowered by the elevator 3.3, and the slag in the packet C is discarded by moving it to another bucket (not shown). The bucket C that has become empty is transported again to the slag raking port 2 and the above operation is repeated.

In this way, with this device, pure aluminum contained in aluminum slag can be easily recovered with good workability and high purity.In particular, the high-temperature aluminum discharged from bucket Because it can be refluxed to A.

It has low heat loss and extremely high thermal efficiency.

(Effects of the Invention) As explained above, the aluminum recovery apparatus according to the present invention includes a slag squeezing unit B disposed on the side of the melting furnace A, and a packet for storing aluminum slag into an aluminum melting furnace. C, which forms an aluminum slag scraping port 2 in the melting furnace A, and rotates the squeezing unit B in close proximity to the elevator 3.3 of the bucket C and the inner wall surface of the bucket C in the raised position. A movable conveyor 19 is provided, one end of which is located below the stopper 16 provided on the bottom of the bucket C in the raised position, and the other end extends to the melting furnace A. , a lid body 15 that covers the bucket C in the raised position.
Since the lid body 15 is connected to the suction machine 18 via the duct 17, pure aluminum can be easily recovered from the aluminum slag collected in the melting furnace A with good workability and high purity. In addition, since the aluminum discharged from the bucket C is immediately returned to the melting furnace A by the conveyor 19 in a high-temperature state, there are various effects such as extremely good thermal efficiency.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which FIG. 1 is a plan view of an aluminum recovery device, FIG. 2 is a side view, FIG. 3 is a partially exploded view, and FIG. 4 is a partially side view.

Claims (1)

[Claims] It consists of an aluminum melting furnace, a slag squeezing unit disposed on the side of the melting furnace, and an aluminum slag storage bucket. It consists of a bucket elevator and a rotating blade that rotates close to the inner wall surface of the bucket in the raised position, one end of which is located below the opening/closing stopper provided on the bottom of the bucket in the raised position, and the other end thereof. An aluminum recovery apparatus characterized in that a movable conveyor whose part extends to the melting furnace is provided, a lid is provided to cover the bucket in the raised position, and the lid is connected to a suction machine via a duct. .