JP2001355026A - Apparatus for treating aluminum dross - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the recovering ratio of aluminum in dross by compression- separating fluid content, such as the air, mixed in the molten-state aluminum metal and dross while suitable breaking arch formed in the dross, to obtain the high quality aluminum dross and to enable the easy treating operation and the efficient recovery by reducing the oxidation with the air. SOLUTION: An aluminum dross treating apparatus is provided with a porous receiving table on the bottom surface of a compression chamber for receiving the dross 11 held to not lower than the melting point of the aluminum, pressurizing means 3a, 4a divided into a plurality of pieces in the plane to compress the dross 11 received on this porous receiving table and pressurizing systems 3, 4 for individually pressurizing to these pressurizing means 3a, 4a in multi- steps.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aluminum dross processing apparatus, and more particularly to a dross for scraping a molten aluminum metal contained in aluminum dross scraped from a processing furnace and a flow component such as air mixed in dross. Squeezing and separating while properly destroying the arch formed inside increases the recovery rate of aluminum in the dross, and reduces oxidation of aluminum by air mixed in the dross to obtain high quality aluminum dross, and An object of the present invention is to provide an apparatus which facilitates the handling operation and enables efficient processing.

[0002]

2. Description of the Related Art As a method for recovering metallic aluminum contained in aluminum dross, high-temperature dross scraped out of a processing furnace is put into a vessel, and a flux for heating, removing slag is added thereto, and stirring is performed to oxidize the metallic aluminum. There are a method in which the film is weakened, metal droplets are combined and separated from oxides by gravity, and a method in which a liquid aluminum is squeezed out by placing it in a container having an opening at the bottom and applying pressure. Further, a method has been proposed in which squeezing is performed more efficiently by applying vibration together with pressure.

The present inventors have conducted various studies on the use of a squeezing method for the separation and recovery of metallic aluminum in dross as described above, and have made some proposals which have not been disclosed yet, namely, dross. The aluminum content in dross after treatment is increased by compressing the aluminum to increase the separation and recovery rate of metallic aluminum, and by appropriately removing air in the dross to limit the oxidation of residual aluminum. To increase
The dross has been successfully used.

[0004]

The above-mentioned conventional separation and recovery of metal aluminum in dross by gravity increases the recovery rate of aluminum. However, the one in which a flux for raising the temperature and removing slag is used to burn the aluminum at an angle. Reduce. Further, a large amount of gas or dust is generated during the processing operation, which not only deteriorates the working environment but also pollutes the surrounding environment, and in some cases, causes environmental destruction due to an explosion.
In addition, the method of adding vibrations can destroy the arch to some extent, but generates unbearable noise and vibration. Preventive measures against them are expensive and the installation place of the device is limited.

[0005] On the other hand, the press separation proposed by the present inventors effectively improves the aluminum recovery rate, suppresses the oxidative consumption of aluminum in the dross, and increases the aluminum content in the dross after the treatment. However, as a result of repeated detailed and practical studies on such a method, a considerable amount of metallic aluminum remains in the dross even by squeezing, and the metallic aluminum remaining in the dross is oxidized. Left to you. In particular, in such a dross, an arch is formed due to the frictional resistance of the dross solid, which inhibits the squeezing, leaving voids in the dross after the squeezing, and a considerable amount of metal metal remains and wasted due to oxidation of the remaining metal. Inevitable. Further, in order to limit the above-mentioned compression inhibition caused by the arch as much as possible, it is necessary to limit the amount of processing at one time, and there is a disadvantage that it is difficult to obtain a favorable result.

If the dross after collecting the metal as described above is directly discarded, a special disposal cost is required, and land or equipment for disposal is required. On the other hand, it is conceivable to use the dross after collecting the metal as an additive for deoxidizing or keeping heat during steel refining, and in this case, it is a useful resource,
Since such a flux utilizes the oxidizing action of aluminum, a high aluminum concentration in dross is required. However, the residual ash after squeezing the metal by the above-mentioned method is powdery or pumice-like, and the metal remaining in the residual ash is the dross due to the release of the squeezing force after the pressing process is completed. Is reduced by the combustion due to the entering air accompanying the restoration of the apparent volume of the metal, and the amount of metal is inevitably reduced. Making the ash into a flux for iron and steel as described above requires molding with a binder, etc., the quality is not constant, and the reaction is delayed due to the low density and floating on the slag, and the granular metal. There are disadvantages such as doing.

Accordingly, from the viewpoint of metal recovery and resource protection, aluminum in the dross is sufficiently recovered by squeezing, and furthermore, the dross in the container must be prevented from oxidizing the aluminum metal in the remaining dross. Destroys the arch due to the solid frictional resistance of the air, and eliminates air gaps and prevents air from remaining and entering.For that purpose, the pressing force will be sufficiently high, but with the increase in the diameter of the dross container, etc. The pressure required for performing sufficient pressurization becomes extremely high, and the strength of the container and the size of the pressurizing mechanism are increased. As a method of avoiding this, vibration is also used, but in this case, unacceptable noise and vibration are involved, and such measures must be taken into consideration, causing noise pollution.

Further, it is inevitable that metal or dross adheres to the opening of the perforated plate as described above, and it is difficult to remove the aluminum or the treated dross solidified and fixed to the opening of the perforated plate. Each time the squeeze is performed, a large amount of time is required to remove the solidified slag in order to remove the solidified solidification.In order to separate the solidified dross mass from the porous bottom plate, a wedge is used between the dross and the porous bottom plate. It requires a considerably strong peeling-off and peeling-off process, and requires a great deal of man-hours to separate and remove the consolidation of the perforated bottom plate or to clean the opening.

In order to further increase the efficiency of separation and recovery by pressing, it is essential to increase the pressing force. To increase the pressing force, it is necessary to increase the thickness of the porous bottom plate. The thicker the porous bottom plate, the longer the squeezed length of the metal becomes, the greater the tendency of metal consolidation in the perforated area becomes, and the more difficult it is to remove such consolidated parts. However, such an effect cannot be effectively eliminated.

[0010]

SUMMARY OF THE INVENTION The present invention has been studied to solve the problems in the prior art as described above, and in performing the above-described squeezing treatment, the occurrence of arches due to frictional resistance of dross solids. The squeezing process is efficiently achieved by adopting a squeezing method that appropriately eliminates the above-mentioned squeezing process. The present invention has been made practicable, and is as follows.

(1) A compression chamber for receiving dross held at a temperature equal to or higher than the melting point of aluminum is provided with a perforated pedestal at the bottom thereof, and the dross received on the perforated pedestal is divided into a plurality of planes for squeezing. An aluminum dross processing apparatus, comprising: a plurality of pressurizing systems for pressurizing each of these pressurizing means.

(2) A plurality of rod-shaped members, each of which is divided in a plane, are provided on both sides of the perforated pedestal. The said narrowed thing is made to oppose, consists of several parts combined mutually as a comb-tooth shape, The said one or both of these comb-tooth-like parts were provided so that separation was possible. The aluminum dross processing apparatus according to the above mode (1).

(3) A plurality of pressurizing systems for pressurizing each of pressurizing means divided into a plurality of planes for squeezing dross received on the perforated receiving table are provided in multiple stages. The aluminum dross processing apparatus according to the above mode (1) or (2).

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A specific embodiment of the present invention will be described with reference to the accompanying drawings. The general configuration of a dross processing apparatus according to the present invention is as shown in FIGS. The porous body 17 is set between the peripheral frames 16 held by the stoppers 22, and is provided on the metal receiving tank 12 having the rising portion 23.
And the container 1 for accommodating the dross 11 on its peripheral frame 16 is set by determining the position of the container 1 by the positioning part 21, and the metal receiving tank 12 is provided with the mechanism base 15.
It is held on the mechanism base 15 by the receiving part 2 provided above. Reference numeral 18 denotes a receiving portion for fixing the container 1 to the mechanism base 15 at the time of squeezing, and for lifting the container 1 while leaving the dross 11 on the porous body 17 after dross processing.

The guides 7 and 7 provided on the mechanism base 15 extend above the container 1 and slidably hold the intermediate table 14 and have an upper table 13 at the upper end thereof.
The upper table 13 is provided with a first cylinder 3 which acts to lower the intermediate table 14, and a second cylinder 4 is mounted on the lower surface of the intermediate table 14. On the outer side or peripheral side of the second cylinder 4, there is disposed an outer pressing portion 5 which is one part for partially pressing down the dross, and the piston 4a of the second cylinder 4 has a partial pressing down. The intermediate pressure lower part 6 which is the other part of the first cylinder 3 is mounted, and the hydraulic pipe 32 for the first cylinder 3 is provided.
As a result, the piston 3a acts to lower the outer pressing portion 5 via the intermediate table 14, while the hydraulic piping 33 for the second cylinder 4 causes the piston 4a to act, thereby lowering the intermediate pressing portion 6. It is made up of

On the mechanism base 15, the above-mentioned seat 1
The push plates 8 and 18 are provided so as to be able to move up and down. As described above, the push plate 8 is interposed between the dross 11 and the container 1 in which the dross 11 is accommodated. The lower part 5 and the intermediate lower part 6 are adapted to reduce the pressure. The intermediate part of the receiving part 18 is provided at the intermediate part of the mechanism base 15 for operating the receiving part 18 in the vertical direction as shown in FIG. A third cylinder 19 is provided.

Here, the pressurizing system (first cylinder 3 and second cylinder 4) includes a plurality of pressurizing means (pistons 3a).
In addition, it can be understood that the dross treatment apparatus of the present invention is provided in multiple stages in the vertical direction so as to pressurize the piston 4a). That is, as shown in FIG. 11, the first cylinder 3 above the dross processing apparatus of the present invention operates first to pressurize a plurality of pressurizing means (pistons 3a), and then the second cylinder 4 below. Is operated to press the pressurizing means (4a).

In the apparatus shown in FIG. 1, the push plate 8 is separated from both the intermediate pressure lower part 6 and the outer pressure lower part 5, and is separately loaded on or taken out of the dross 11. The push plate 8 can be worked without special loading or unloading operations on the push plate 8, in particular, by fastening it to the intermediate pressure lower part 6. 15 (a), (b) and (c) show the mounting state of the push plate 8 to the intermediate pressure lower portion 6, respectively. In the case of FIG. (B) shows the case where the push plates are connected by the chain mechanism 52, and (c) shows the case where the universal joint mechanism 53 is used.

That is, FIGS. 15 (a), (b) and (c) of FIG.
Are mounted so that the push plate 8 can be inclined to a certain extent. In particular, those shown in FIGS. 9B and 9C can have a considerably large inclination. However, since the push plate 8 can be bent as shown in FIGS. 9 and 10 described below and can be appropriately deformed when pressed against the dross 11, it is not necessarily required that the push plate 8 be inclined as described above. Any of the above-mentioned mechanisms can be adopted according to the respective working conditions at the time of the rolling down, not the essential conditions.

The relationship between the intermediate pressure lowering portion 6 and the outer pressure lowering portion 5 and the pressing action on the dross 11 in the container 1 via the pressing plate 8 is the same as the positional relationship shown in FIGS. Can be adopted. That is, in FIG. 3, the intermediate pressing portion 6 and the outer pressing portion 5 are circularly concentric with the pressing plate 8 or the container 1, and in FIG. 4, the pressing plate 8 and the container 1 are also circular. In the figure, a middle crimping portion 6 is long in the center portion, and half-moon-shaped outer crimping portions 5 and 5 are provided on both sides thereof.

FIGS. 5 and 6 show a case where the opposing member 25 or 26 is employed without taking an inside-out relationship as a member for partially reducing the pressure. The whole reduction area or the portion of the container 1 is circular as shown in FIGS. 3 and 4, and it is possible to obtain equipment that is preferable for pressure resistance to dross pressure reduction in the container 1 in FIGS. Is the same as

FIGS. 7 and 8 show a case where a rectangular push plate 8 or the container 1 is adopted in principle, in contrast to those shown in FIGS. From the viewpoint of the nature, a suitable arc portion is adopted for the corner portion, but it has a rectangular configuration in principle. 7 adopts the consolidation portions 5 and 6 based on the concentric relationship, and FIG. 8 uses the consolidation portions 25 and 2 based on the facing arrangement relationship according to FIG.
6 shows a case in which No. 6 is adopted. That is, the rectangular shape is suitable for setting the container 1 so that the furnace side of an aluminum smelting furnace or the like is set along the furnace side, and it is possible to accurately receive the dross scraped out on the furnace side.

With respect to the above-described structure of the present invention, the state of deformation of the pressing plate 8 when the pressing is performed by the pressing portions 5, 6 or 25, 26 is shown as a typical aspect in FIGS. Have been. That is, FIG. 9 shows a state in which the intermediate pressure lower part 6 in FIG. 3 is pressed down while the dross 11 is housed and filled in the container 1, and the periphery of the push plate 8 forms the bent part 10,
The central portion is recessed in a dish or bowl shape, and the peripheral side is in a floating state. Next, if the outer pressing portion 5 is pressed down, the outer portion of the pressing plate 8 is pressed down, and the center portion is in a floating state. In the case of the pressing portions 5 and 6 shown in FIG. 4, as shown in FIG. 10, the central portion and the outer portion of the pressing plate 8 are alternately pressed down, and the pressing deformation of the same pressing plate 8 is also possible in other cases. Obtained similarly. Therefore, the dross is moved in a direction different from the rolling-down direction when the dross is squeezed. Even if an arch is generated, the dross is destroyed, and the arch is not generated anyway.

The concrete dross squeezing process involving the pressing and deforming state of the pressing plate 8 as shown in FIGS. 9 and 10 is an alternate concentric squeezing method as shown in FIG. 11 and an alternate inclined squeezing method as shown in FIG. Is performed by any one of That is, the one shown in FIG. 11 employs the pressurizing system (first and second cylinders) provided in multiple stages as described above, so that the dross 11 as the raw material is received as shown in FIG. As shown in FIG. 2 (b), the whole is moderately reduced, and then, as shown in FIGS. 3 (c), 3 (d) and 3 (e), the central portion and the outer portion are alternately squeezed. After that, the whole is pressed down to obtain a concentric relationship as shown in FIG.

In the case shown in FIG. 5, the dross 11 is received and the whole is pressurized as shown in FIGS. Pressing is repeated a suitable number of times to perform inclined pressing, and then the whole is pressed as shown in FIG.

In the present invention, as the porous member 17 provided at the bottom of the container 1 described above, a grating method or any other suitable member can be adopted. Has a generally planar configuration relationship as shown in FIG. 13, and it is advantageous that a part of the configuration is as shown in FIG. That is, the plurality of divided rod members 30a and 3
0b, and a number of openings for dropping the molten aluminum squeezed between the rod-shaped members are formed by combining the rod-shaped members of the seat-shaped members. 36, wherein the cross-section of the rod-shaped member has a narrow bottom in the vertical direction, and the rod-shaped member is opposed to a receiving member which is wide on the base end side and narrow on the distal end side. Combination of the rod members to form a comb-tooth-like body, with a substantially uniform gap formed between the respective rod members, or a fixed seat member having a plurality of rod members arranged in a row. The movable seats are opposed to each other by combining the rod-shaped members of the seats with each other, and the movable seat is in the thickness direction of the fixed seat or a rod-shaped member of each seat. Being able to move in the length direction of the member, the openings are evenly distributed between the rod members And the total area of the openings is increased by 15 to 50% on the upper surface side of the seat body area and by 20% or more of the upper surface side openings on the lower surface side. It is assumed that the configuration adopts a combination of two or more.

In FIGS. 13 and 14 described above, the pivot 20 is attached to the base of the hatched rod-like member 30a, which is a fixed receiving part, and each of the movable receiving parts is a rod-like member. Although one end side of 30b is pivotally mounted, each of the above-mentioned rod-like members 30a has a wide portion 27 on the surface at the base end of pivotal connection, whereas each of the rod-like members 30b has a pivotal axis. 20 is a narrow portion 28
The wide portion 27 and the narrow portion 2 of both members 30a, 30b
8 are alternately positioned.

Each of the rod members 30a, 3a
In the thickness direction 0b, a member 30a having a wide portion 27 formed on the bottom surface as shown in FIG.
Form a narrow portion 28 on the top surface and the members 30b forming the narrow portion 28 on the bottom surface are arranged to form a wide portion 27 on the top surface, so that the opening between the two members 30a, 30b. As shown in FIG. 14, the hole gap 36 has a constant parallelogram shape from the front side to the bottom side. That is, both members 30a,
The opening gap 36 between the movable seats 30b is constant, and the tilting or rotating action of the movable seat portion 30b about the pivot 20 is pivoted on the narrow portion 28 in the state shown in the figure, and the wide portion 27 rises. As a result, the project is implemented smoothly without any problems.

That is, in the structure shown in FIGS. 13 and 14, a large number of openings for dropping the molten aluminum metal squeezed between the rod members positioned as described above are provided. Since it is formed, an opening is provided between the combined rod-shaped members for allowing the squeezed molten aluminum metal to pass therethrough. By the disassembly of the body, the coagulated and fixed part is simple and quick,
Moreover, peeling can be accurately eliminated. The cross section of the rod-shaped member has a narrow bottom portion in the vertical direction, thereby restricting the molten aluminum that is about to drop from the opening from sticking to the side surface of the opening and securing strength against squeezing force. I do. There are trapezoidal shapes, triangular shapes, and the like as cross sections in which the bottom of the rod-shaped member is narrow, and such a cross-sectional shape can be appropriately adopted for all or a part of the comb teeth.

According to the present invention as described above, dross held at a temperature equal to or higher than the melting point of aluminum is accommodated in a compression chamber, and a pressing plate covering substantially the whole of the dross is interposed on the dross. The partial pressing force is sequentially applied through the dross, and the dross is moved or deformed in the load direction while compressing the dross to separate and collect the molten aluminum in the dross, thereby reducing the pressing force. The squeezing can be performed smoothly while appropriately destroying the arch generated in the dross to be squeezed, and particularly without any vibration or impact, and can be performed smoothly under quiet conditions. In addition, by interposing a pressing plate that covers substantially the entirety of the dross, the metal can be effectively prevented from flowing out of the boundary between the pressurized parts even by the partial pressing force that acts sequentially, and is efficient. Movement in a direction different from the load direction of the squeezing and dross, such as laterally or diagonally upward when the vertical direction is reduced, for example.

By interposing a metal pressing plate which is bent and deformed by a partial pressing force on the aluminum dross housed in the compression chamber, the dross is well adapted to the deformation of the dross due to the partial pressurization described above. Efficient squeezing accompanied by arch destruction and metal outflow prevention are efficiently achieved while moving or deforming to the side in the pressing direction.

By interposing a pressing plate which is not substantially deformed by a partial pressing force on the aluminum dross housed in the pressing room, it is possible to efficiently break the arches of the entire dross by partially alternately applying pressure. Smooth metal squeezing.

By alternately repeating the partial pressing force via the pressing plate, molten aluminum is squeezed out of the entire dross while the arch is broken by a relatively low pressing force.

By sequentially applying three or more partial pressurizing means via a pressing plate in the circumferential direction of the container accommodating the dross, arches are successively broken by a slight pressing force in each of the multi-divided portions. The effective squeezing action of the squeezing is effectively performed to achieve the preferable squeezing of the molten aluminum.

[0035] A perforated pedestal is provided at the bottom of the compression chamber for receiving dross held at a temperature higher than the melting point of aluminum, and a plurality of flattened presses for compressing the dross received on the perforated pedestal are provided. By having a pressing means, and by providing a pressing system for pressing each of these pressing means, aluminum metal squeezing while destroying the arch as described above is appropriately performed by a relatively compact mechanism. Let me do it.

The multi-aperture cradle is composed of a plurality of opposing parts which are divided and are combined with each other as rod-shaped members by opposing a plurality of seats whose cross-sectional area on the distal end side is gradually narrowed. Is provided so that it can be disassembled with respect to the other, so that the above-mentioned squeezing of the aluminum metal can be appropriately performed. Easy removal and cleaning of objects.

A pressurizing system for pressurizing each of a plurality of pressurizing means divided into a plurality of planes for pressing the dross received on the perforated receiving table is provided in multiple stages with respect to the machine frame. The installation enables the above-described processing to be smoothly performed with equipment in a limited site area, and effectively achieves a combined squeezing action on dross charged in a certain container.

A pressing plate interposed on the dross so as to cover substantially the whole of the dross is engaged with the pressing force transmitting portion of the machine body so that the pressing means divided into a plurality of pieces can press each piece. As a result, the push plate is inserted into or taken out of the dross together with the pressurizing force transmitting portion of the mechanical device main body, and the members of the mechanical device main body are arranged on the dross, which is under a considerably high temperature condition, and around the dross. Appropriately eliminating the complexity or difficulty of loading and unloading the push plate under narrow conditions.

The dross held at a temperature equal to or higher than the melting point of aluminum is accommodated in a compression chamber, and a partial pressing force is sequentially applied via a pressing plate covering substantially the entire dross. Increased aluminum content by restricting oxidation of residual aluminum by being a steelmaking additive obtained from dross mass obtained by separating and recovering molten aluminum by squeezing while moving or deforming in a different direction from The aluminum dross effectively.

[0040]

[Specific processing example] In the equipment shown in FIGS. 1 and 2, the container 1 has an inner diameter of 1000 mmφ and a depth of 3 mm.
A round container having a diameter of 00 mm was used, and the dross 11 held at a temperature higher than the melting point of aluminum and scraped out of the processing furnace was received in the container 1 heated to 300 to 400 ° C., and a pressing plate 8 was placed thereon to perform squeezing treatment. As a pressing portion for the pressing plate, an intermediate pressing portion 6 and an outer pressing portion 5 as shown in FIG. 3 are typically used to apply bending deformation to the pressing plate 8 by pressing as shown in FIG. Pressure was applied at 300 t so that one of the pressing portion 6 and the outer pressing portion 5 was depressurized and the other was pressed down. At the beginning and the end of the squeezing, one of the pressing portions 5 and 6 is locked and the other is pressed down, and the entire surface is pressed down. Processed. The preheating of the container 1 is not always necessary when a large container is used as in this processing example, but the inner diameter is 500 m.
When a small container having a diameter of not more than m is used, the dross is preferably heated to 500 to 600 ° C. in order to prevent the dross from cooling and solidifying.

As a comparative example with respect to the processing example according to the present invention as described above, the dross obtained in the same manner was housed in a container under the same conditions, and the state where the entire push plate was pressed at 300 t for 5 minutes was continued. And squeezed aluminum metal. Table 1 below summarizes the processing results of the processing examples of the present invention and the comparative examples.

[0042]

[Table 1]

That is, according to the results shown in Table 1, under the processing conditions in which the amount of dross charged was a relatively large amount of 230 to 240 kg, the recovery amount or the recovery ratio of aluminum was relatively high. In the case of the processing example according to (1), a recovery amount of 90 kg or more is secured and a recovery rate of 50% or more is secured. On the other hand, regarding the dross properties after the treatment, those of the treatment example of the present invention were at least 20 kg less than those of the comparative example, and their bulk specific gravity was 2 g / cm3.
Above, especially A1% in the dross after the treatment is 50% or more,
It was 10-15% higher than that of the comparative example, and it was confirmed that the weight increase of dross was as low as about one third.

In other words, according to the results shown in Table 1, sufficient compaction is performed by the present invention in any case.
That is, it is known that the destruction of the arch and the accompanying favorable squeezing are achieved, and the amount of air re-entering the extracted dross is small, and the oxidation of the metal in the dross remaining is effectively suppressed. Was. That is, it is known that, according to the present invention, the recovery of aluminum metal in dross can be increased to a certain extent, and at the same time, a preferable dross that effectively acts as a heat retaining agent or an additive for steelmaking operations such as deoxidation and desulfurization can be appropriately obtained. Was.

[0045]

According to the present invention as described above, aluminum metal can be effectively separated and recovered from dross maintained at a temperature equal to or higher than the melting point of aluminum under arch breaking conditions, and the metal remaining in the dross after the treatment can be obtained. The present invention can provide dross having a high content of metallic aluminum by accurately preventing the oxidation and nitridation of aluminum, and is an invention having a large industrial effect.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing the general configuration of a dross recovery processing apparatus according to the present invention.

FIG. 2 is a side view of what is shown in FIG.

FIG. 3 is a plan explanatory view showing the arrangement relationship of the pressure lower portion with respect to the dross in the container according to the present invention.

FIG. 4 is a plan view showing another example of the relationship between the press-down portions according to the present invention.

FIG. 5 is a plan view of a press-down arrangement relationship showing still another example different from that of FIGS.

FIG. 6 is a plan view of the relationship between the pressing down arrangement according to another embodiment of the present invention.

FIG. 7 is a plan view showing the relationship between the press-down portions in which the shape of the container is changed.

FIG. 8 is a plan view of another press-down arrangement relation different from that of FIG. 7;

FIG. 9 is a perspective view showing a deformed state of the push plate in the case of the press-down arrangement as shown in FIG. 3;

FIG. 10 is a perspective view showing a deformed state of the push plate in the case of the pressing-down arrangement as shown in FIG.

FIG. 11 is a step-by-step explanatory diagram of a typical example of the squeezing process according to the present invention.

FIG. 12 is a step-by-step illustration of another pressing process according to the present invention.

FIG. 13 is a plan explanatory view showing a preferred configuration example of a perforated plate in the present invention.

FIG. 14 is an explanatory diagram showing an end surface configuration relationship of a part of the configuration shown in FIG. 13;

FIG. 15 is a partial explanatory view showing a typical configuration in which a push plate interposed on a dross is locked to a pressing force transmission unit.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Container 2 Receiving part 3 1st cylinder 3a Piston 4 2nd cylinder 4a Piston 5 Outer pressure lower part 6 Intermediate pressure lower part 7 Guide 8 Push plate 10 Push plate peripheral bend 11 Dross 12 Metal receiving tank 13 Upper stand 14 Intermediate stand 15 Mechanism base 16 Peripheral frame 17 Perforated pedestal 18 Receiving part 19 Third cylinder 20 Axis 21 Positioning part 22 Stopper 23 Rising part 25 Opposing part body lower part 26 Opposing part body lower part 27 Wide part 28 Narrow part 30a One side 30b The other rod member 32 Hydraulic piping (first cylinder) 33 Hydraulic piping (second cylinder) 36 Opening gap 51 Connecting pin 52 Chain mechanism 53 Universal joint mechanism

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Hiroshi Watanabe 1-34-1 Kambara, Kambara-cho, Anbara-gun, Shizuoka Prefecture Within Nippon Light Metal Co., Ltd. Group Technology Center (72) Inventor Masatoshi Nanba 3-chome Mita, Minato-ku, Tokyo No. 12 Nippon Light Metal Co., Ltd. (72) Inventor Kunio Hayashi 351 Ejiri, Takaoka-shi, Toyama F-term (reference) 4K001 AA02 BA13

Claims (3)

[Claims] 1. A pressing chamber for receiving dross held at a temperature equal to or higher than the melting point of aluminum is provided with a perforated pedestal at the bottom thereof, and is divided into a plurality of planes for squeezing the dross received on the perforated pedestal. An aluminum dross processing apparatus, comprising a plurality of pressurizing systems for pressurizing each pressurizing means individually. 2. A plurality of rod-like members each having a two-dimensionally-divided perforated pedestal opposed to each other from both sides, and the group of these rod-like members has a base end that is wider in plan view and a distal end that is gradually narrowed. And a plurality of parts that are combined in a comb-like shape with each other, and one or both of the comb-like parts are provided so as to be separable. 1
An aluminum dross processing apparatus according to item 1. 3. A pressing plate interposed on the dross so as to cover substantially the whole of the dross is engaged with a pressurizing force transmitting portion of the main body of the mechanical device, and pressurizing means divided into a plurality of pieces are pressed against each piece. The aluminum dross processing apparatus according to claim 1 or 2, wherein