JP2012001771A - Apparatus for treating floating slag of molten nonferrous metal - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus for treating floating slag, which stirs and breaks down the floating slag produced in a melting furnace for a nonferrous metal, separates a melt of the nonferrous metal mixed in the floating slag from the broken floating slag by gravity separation and recovers the melt, provided that major parts of the apparatus are commonized so as to adapt to a wide range of situations of passages surrounding the melting furnace while realizing reduction of production cost by mass production.SOLUTION: The apparatus comprises: a floating slag treatment tank 10 which holds the floating slag; a stirring blade 2 which is arranged in the floating slag treatment tank 10; a rotary driving means 3 of the stirring blade 2; and tilting means 4A-4C for tilting the floating slag treatment tank 10 so that the melt of the nonferrous metal separated by gravity separation can flow out. A laterally projecting outlet 1c is formed on the upper edge 1b of the floating slag treatment tank 10. The rotary driving means 3 is attached to bases 5A and 5B each having a part 51 for inserting a forklift hook. The floating slag treatment tank 10 is arranged on the bases 5A and 5B in a manner such that the tank can be detached and that the horizontal orientation of the tank can be changed.

Description

  The present invention relates to a buoyancy treatment apparatus used to separate and recover a nonferrous metal melt mixed in a buoyancy produced in a nonferrous metal melting furnace such as aluminum or an alloy thereof.

  Generally, when non-ferrous metals such as aluminum and its alloys are refined from ore, or when non-ferrous metals are taken out from waste materials containing non-ferrous metal scraps and non-ferrous metals, the non-ferrous metals are melted in a high-temperature furnace. Then, non-metallic substances (mainly oxides) are generated as floats called dross, noro, slag, etc. on the surface of the melt. Therefore, since the melt of non-ferrous metal is mixed in the float by several percent to several tens of percent, the non-ferrous metal melt is recovered from the float in terms of both effective use of resources and economy. It becomes important.

  As a means to recover non-ferrous metal melt from the float in this way, the float floated from the melting furnace is put into the separation tank of the porous bottom plate and allowed to stand, and the non-ferrous metal melt is separated by the difference in specific gravity from the float. Then, a stationary separation method (for example, Patent Document 1) that drops from the hole in the bottom plate, a squeezing extraction method (for example, Patent Document 2) in which the float is accommodated in a compression chamber of the porous bottom plate, and is squeezed to squeeze the non-ferrous metal melt. The non-ferrous metal melt that has been separated and settled by storing the float in the treatment tank, lowering the stirring blade that has been waiting upward, and entering the treatment tank, stirring the float by rotation of the stirring blade The stirring separation method (for example, patent document 3) etc. which flowed out from the bottom hole of the processing tank was employ | adopted.

  However, the above-mentioned stationary separation method has a drawback that the non-ferrous metal melt contained therein cannot be sufficiently separated and the recovery rate is poor because the buoyancy is generally in a solid state. In addition, the above-described compression extraction method has a problem that the apparatus configuration is complicated and large, the equipment cost is very high, the pressing can be performed only in small amounts, and the processing efficiency is inferior. On the other hand, in the conventional stirring separation method, the non-ferrous metal melt is easily separated by specific gravity by crushing the float, but the stirring operation is performed on the upper side of the treatment tank in order to prevent the drive unit of the stirring blade from deteriorating due to high heat. Since a lifting mechanism for retracting the stirring blades upward is provided except for the time, the equipment cost is high and the lifting mechanism is bulky, so that it is difficult to apply to a processing apparatus for a small melting furnace.

  Therefore, in recent years, the agitation blade is disposed in the buoyancy treatment tank, the buoyancy treatment tank is disposed on a pedestal provided with the rotation drive mechanism, and the buoyancy treatment tank is disposed on a carriage provided with tilting means. The float is pivotally supported with the pedestal so that it can be tilted. The float placed in the float tank is crushed with stirring blades, and the non-ferrous metal melt separated by specific gravity is extracted and recovered by tilting the treatment tank. An apparatus has been proposed (Patent Document 4). In this levitation treatment apparatus, the high heat of the levitation contained in the levitation treatment tank is difficult to be transmitted to the rotation drive mechanism, the entire apparatus exhibits excellent durability, and does not require a stirring blade raising / lowering mechanism. Since there is no bulky appendage above, the equipment cost is reduced and high suitability for a small melting furnace is obtained.

JP-A-7-252547 Japanese Patent Laid-Open No. 10-195553 JP-A-9-87764 JP 2009-293080 A

  However, the surrounding conditions of non-ferrous metal melting furnaces vary depending on the factory, and the passage is narrow and bent, there is a difference in height between the position where the float is received and the position where the recovered non-ferrous metal melt is recovered, In many cases, the distance between them is large, and further, it is necessary to move or change the melt recovery position. Therefore, in the proposed buoyancy treatment apparatus, the width of the carriage provided with the tilting means is too large to be carried into the buoyancy receiving position, or it is difficult to move between the receiving position and the melt recovery position. There were many cases. On the other hand, in order to cope with this, it is necessary to set the structure of the buoyancy treatment apparatus for each factory to be applied according to the surrounding conditions of the melting furnace, the passage conditions, etc. There is a problem that the manufacturing cost is very high because it is a dedicated specification for each application factory.

  In view of the above situation, the present invention stirs and crushes the flotation produced in a nonferrous metal melting furnace, and collects the nonferrous metal melt mixed in the flotation by separating it from the flotation crushed material. As a buoyancy treatment apparatus used for the above, a stirring blade is arranged in the levitation treatment tank, and the buoyancy treatment tank is installed on a pedestal on which the rotation drive mechanism is installed. An object of the present invention is to provide an apparatus capable of widely dealing with differences in passage conditions in the vicinity of the melting furnace and capable of reducing production costs by mass production.

  In order to achieve the above object, the non-ferrous metal molten metal flotation processing apparatus according to claim 1 of the present invention, if attached with reference numerals in the drawings, stirs and crushes the flotation produced in a non-ferrous metal melting furnace. A non-ferrous metal melt mixed in the buoyancy and used for recovering by separating the specific gravity from the buoyant crushed material, and is a buoyancy treatment that opens upward and accommodates the buoyancy The tank 10, the stirring blade 2 arranged in the float processing tank 10, the rotation driving means 3 of the stirring blade 2, and the float storage tank 10 are tilted so that the non-ferrous metal melt separated by specific gravity flows out. The pedestal 5A, which includes tilting means 4A to 4C, is formed with a discharge port 1c projecting sideways on the upper edge 1b of the buoyancy treatment tank 10, and the rotation driving means 3 has a forklift claw insertion part 51. It is attached to 5B, and the buoyancy treatment tank 10 is detachable on the bases 5A and 5B. Is characterized in in that formed by and installed in the horizontal orientation can be changed to.

  According to a second aspect of the present invention, there is provided the non-ferrous metal molten metal float treatment apparatus according to the first aspect, wherein the cylindrical portion 1a standing upright at the center of the bottom of the tank body 1 of the float treatment tank 10 is integrally formed, and The rotational drive shaft 30 of the rotational drive means 3 provided in 5A and 5B is concentrically arranged in a non-contact state inside the cylindrical portion 1a, and the top of the rotational drive shaft 30 protrudes from the cylindrical portion. The mounting base 20 of the stirring blade 2 is connected to 30a so as not to be relatively rotatable.

  According to a third aspect of the present invention, in the float processing apparatus for molten non-ferrous metal according to the first or second aspect, wheels 52 and 53 are attached to a base 5A to constitute a cart 8A.

  According to a fourth aspect of the present invention, in the float apparatus for molten non-ferrous metal according to the first or second aspect, the pedestal 5B provided with the float tank 10 is detachably mounted on the carriage 8B traveling on the rail track R. It is supposed to be.

  According to a fifth aspect of the present invention, in the flotation processing apparatus for a non-ferrous metal melt according to any one of the first to fourth aspects, the tilt frame 41 as the tilt means 4A and the tilt mechanism (power cylinder 42) are provided at the melt recovery position. The pedestal 5A installed on the tilting frame 41 and mounted on the pedestal 5A via a forklift is tilted to tilt the buoyancy processing tank 10 by tilting the tilting frame 41, thereby extracting the extracted non-ferrous metal melt. It is comprised so that it may flow out from the discharge port 1c.

  The invention of claim 6 is the float processing apparatus for molten non-ferrous metal according to any one of claims 1 to 4, wherein the tilting means 4B comprises a rotary forklift having a rotatable claw holding part, and the float processing tank In the state where the pedestals 5A and 5B on which the base plate 10 is installed are lifted by the rotary forklift, the extracted non-ferrous metal melt flows out from the discharge port 1c by tilting the buoyancy treatment tank 10 by rotating the claw holding portion. It is comprised so that it may be made.

  According to a seventh aspect of the present invention, there is provided the non-ferrous metal flotation processing device according to the first or second aspect, wherein the tilting mechanism (power cylinder 42) of the tilting means 4C and the processing tank pivot ( The non-ferrous metal extracted by tilting the buoyancy treatment tank 10 by a tilting mechanism in a state where the pivot 43 and the support column 44) are mounted, and the buoyancy treatment tank 10 is pivotally supported by the treatment tank pivot portion together with the base 5B. It is comprised so that a molten material may flow out from the discharge port 1c.

  According to an eighth aspect of the present invention, there is provided the non-ferrous metal flotation processing apparatus according to the seventh aspect, wherein the carriage 8C includes a main carriage 80 on which a pedestal 5B on which the flotation treatment tank 10 is installed and a tilting mechanism of the tilting means 4C. In addition, the main carriage 80 is configured to be capable of being connected and disconnected.

  Next, effects of the present invention will be described with reference numerals in the drawings. According to the levitation processing apparatus of the first aspect of the present invention, the buoyancy treatment tank 10 in which the agitation blade 2 is incorporated on the pedestals 5A and 5B having the rotation driving means 3 of the agitation blade 2 and the claw insertion portion 51 for forklift. Since the pedestals 5A and 5B themselves have no tilting means, they can be made narrow and compact, and wheels can be attached to the pedestal 5A to form a carriage 8A, or the pedestal 5B can be changed to a carriage 8B that travels on a rail track. It can be moved between the floating receiving position and the transfer position in front of the non-ferrous metal melting furnace, and can be moved between the transfer position and the non-ferrous metal melt recovery position by a forklift. Therefore, even when the passage around the melting furnace is narrow or when there is a step between the passage from the float receiving position to the melt recovery position, it can be handled without any problem. Further, even when the passage width from the float receiving position to the melt recovery position is wide and there is no step, the tilting means 4C is mounted in a state where both are assembled using the same float processing tank 10 and the base 5B. It can be placed on a large carriage 8C and moved on the rail track between the float receiving position and the melt recovery position.

  On the other hand, at the melt recovery position, the non-ferrous metal melt separated by specific gravity is caused to flow out by tilting the float processing tank 10 by the tilting means 4A to 4C, but the waste protruding sideways from the upper edge 1b of the float process tank 10 is discharged. It is necessary to incline so that the outlet 1c is down, but the side where the forklift claw insertion part 51 faces in the bases 5A, 5B is the rear, and the case where the inclination is in the front-rear direction depending on the type of the inclination means 4A to 4C. May be in the direction. However, since the buoyancy treatment tank 10 can be installed so that the horizontal direction can be changed with respect to the pedestals 5A and 5B, the direction of the discharge port 1c is changed to the front, left and right according to the difference in the tilting direction by the tilting means 4A to 4C. Can be set to one. Therefore, in the buoyancy treatment apparatus of the present invention, in addition to the difference in the movement method from the buoyancy receiving position to the melt recovery position, even if there is a difference in the tilting means 4A to 4C, The bases 5A and 5B can be shared, and the production cost can be reduced by mass production.

  In addition, in this floatation apparatus, since the float floated in the floatation processing tank 10 is crushed by the stirring blade 2, the nonferrous metal melt is easily separated by specific gravity, and the recovery efficiency is improved accordingly. Further, since the rotation driving means 3 of the stirring blade 2 is provided on the pedestal 5A, 5B side, the high heat of the float is not easily transmitted to the rotation driving mechanism, the thermal deterioration is suppressed, and the durability of the entire apparatus is improved.

  According to the invention of claim 2, the rotary drive shaft 30 of the rotary drive means 3 provided on the bases 5 </ b> A and 5 </ b> B is provided inside the cylindrical portion 1 a standing upright at the bottom central portion of the tank body 1 of the float processing tank 10. Since the mounting base portion 20 of the stirring blade 2 is connected to the top portion 30a of the rotary drive shaft 30 protruding concentrically in a non-contact state and protruding from the cylindrical portion, Heat transfer from the bag to the rotary drive mechanism is reduced, and thermal deterioration of the rotary drive mechanism is further suppressed.

  According to the invention of claim 3, since the pedestal 5A constitutes the carriage 8A with the wheels 52, 53, the apparatus configuration including the moving means of the buoyancy treatment tank 10 between the buoyancy receiving position and the transfer position is simple. The manufacturing cost is reduced accordingly.

  According to the invention of claim 4, since the base 5B on which the buoyancy treatment tank 10 is installed is detachably mounted on the carriage 8B traveling on the rail track R, the carriage 8B moves to the buoyancy receiving position. It can be moved between the loading positions and moved between the transfer position and the melt recovery position by a forklift.

  According to the invention of claim 5, the tilt frame 41 as the tilt means 4A and its tilt mechanism (power cylinder 42) are installed at the melt recovery position, and the pedestal 5A in which the float processing tank 10 is installed in the tilt frame 41. Since the extracted non-ferrous metal melt flows out from the discharge port 1c by tilting the float processing tank 10 by tilting the tilting frame 41, the extraction and recovery operation is performed by the machine. Efficient. In addition, when there are a plurality of melting furnaces or a large furnace, a plurality of carts 8A on which the floatation tank 10 is placed are operated, and extraction and recovery of non-ferrous metal melts by them is performed by a single tilting means 4. It can also be performed sequentially.

  According to the invention of claim 6, since the rotary forklift used as the tilting means 4B can also be used as the moving means between the transfer position and the melt recovery position, the apparatus configuration as a whole buoyancy processing apparatus is extremely high. There is an advantage that it becomes simple and equipment costs can be greatly reduced.

  According to the seventh aspect of the present invention, after the buoy raked out from the melting furnace at the buoy receiving position is put into the buoyancy treatment tank 1, the carriage 8C on which the treatment tank 10 is placed collects the molten material on the rail track R. While moving to the position, the stirring blade 2 is rotationally driven to separate the specific gravity of the non-ferrous metal melt, and when the carriage 8C arrives at the melt recovery position, the buoyancy treatment tank 10 is tilted to melt the non-ferrous metal. Since the product can be extracted and recovered, the melt can be recovered very efficiently, and the entire processing process including the traveling of the cart 8C can be fully automated.

  According to the invention of claim 8, the carriage 8C moving on the rail track R includes the main carriage 80 on which the pedestal 5B on which the floating treatment tank 10 is installed, the tilting mechanism of the tilting means 4C, and the processing tank support section. Since the sub carriages 81 and 82 can be connected to and disconnected from the main carriage 80, the sub carriages 81 and 82 can be connected to and disconnected from the main carriage 80. The non-ferrous metal melt can be extracted and recovered by the tilting means 4C and only the main carriage 80 can be used for movement between the floating receiving position and the transfer position.

It is a top view of the apparatus main-body part of the buoyancy processing apparatus which concerns on 1st embodiment of this invention. It is a side view of the apparatus main-body part. It is a rear view of the apparatus main-body part. It is a vertical side view of the same apparatus main-body part. It is a side view which isolate | separates and shows the float processing tank which comprises the apparatus main-body part, a stirring blade, and a trolley | bogie. The stirring blade of the floatation apparatus is shown, (a) is a plan view, (b) is a side view seen from one direction, and (c) is a half side view seen from the other direction. The state which attached the extraction guide member and the ash discharge | release guide plate to the buoyancy processing tank of the buoyancy processing apparatus is shown, (a) is a top view of a half part, (b) is a vertical rear view, (c) is (a) It is a cross-sectional arrow view of the XX line. It is a rear view of the tilting means in the floatation apparatus. It is a side view which shows tilting operation by the tilting means. It is a rear view which shows tilting operation by the rotary forklift in the buoyancy processing apparatus. It is a side view which shows the state which mounted the apparatus main-body part and the base in the buoyancy processing apparatus which concerns on 2nd embodiment of this invention on the trolley | bogie which drive | works a rail track. It is a side view which isolate | separates and shows the buoyancy processing tank which comprises the apparatus main-body part, a stirring blade, and a base. It is a top view of the floatation processing apparatus which concerns on 3rd embodiment of this invention. It is a side view of the floatation apparatus. It is a side view which shows tilting operation by the tilting means of the buoyancy processing apparatus.

  Embodiments of a non-ferrous metal flotation apparatus according to the present invention will be specifically described below with reference to the drawings. 1 to 10 are the first embodiment, FIGS. 11 and 12 are the second embodiment, and FIGS. 13 to 15 are the third embodiment. Components common to these embodiments are denoted by the same reference numerals. ing.

  As shown in FIGS. 1 to 3, the apparatus main body M <b> 1 of the levitating apparatus of the first embodiment is mounted on a hand cart 8 </ b> A in which the levitating tank 10 has a handle bar 17. As shown in FIG. 4, the float processing tank 10 is arranged inside a vertical cylindrical outer shell 11, and a tank body 1 having a substantially circular shape in a plan view having an agitating blade 2 opened inside and disposed upward, Between the outer surface side of the tank body 1 and the outer peripheral cover plate 11a and the lower surface cover plate 11b constituting the outer shell 11, a heat insulating material 12 made of ceramic fiber is loaded. The tank body 1 is made of cast iron such as FC20, and is integrally formed with a cylindrical portion 1a that stands upright at the center of the bottom, and at one place on the upper edge 1b that projects outward in the circumferential direction. A protruding bowl-shaped discharge port 1c is formed. At the bottom of the tank body 1, a plurality of sheathed heaters 13 a constituting the preheating mechanism 13 are arranged so as to circulate in contact with the outer peripheral surface of the tank body 1.

  Thus, the carriage 8A has a pair of left and right fixed wheels 52 attached to the front part of a substantially rectangular frame-like pedestal 5A formed by assembling the mold steel material 50a, and a pair of left and right universal wheels 53 attached to the rear part thereof. As shown in FIG. 5, the pedestal 5 </ b> A has a drive motor 31 and a gear box 32, which are the driving parts of the rotation driving means 3 of the stirring blade 2, fixed at the center, and is mounted on the mounting frame 50 b of the gear box 32. A rotary drive shaft 30 that rises vertically from the gear box 32 is held by a rotary shaft holding cylinder 34 that is erected in a vertically protruding state. In addition, horizontally long rectangular tube members 54 are fixed to the left and right sides of the pedestal 5A via two angular annular mounting plates 55 at the front and rear, respectively. A claw insertion part 51 for forklift is formed by opening in the shape of a sun at the end. A vertical cylindrical handle mounting portion 56 is formed on the left and right sides of the rear end of the pedestal 5A so that the lower end of the handle bar 17 made of a pipe material can be detachably inserted.

  On the other hand, as for the cylindrical part 1a of the tank main body 1 of the float processing tank 10, the inner side is transparent in the up-down direction, and the upright rotation on the pedestal 5A side with the float process tank 10 installed on the pedestal 5A. The drive shaft 30 and the rotary shaft holding cylinder 34 are arranged in a concentric manner in a non-contact state. And although the top part of the cylindrical part 1a is located a little lower than the upper edge part 1b of the tank main body 1, the upper end part 30a of the rotational drive shaft 30 protrudes from the cylindrical part 1a to the height beyond the upper edge part 1b. The short cylindrical mounting base 20 of the stirring blade 2 is fitted on the upper end 30a, and the mounting base 20 is connected to the rotary drive shaft 30 by a connecting pin 33 penetrating in the radial direction. The lower end portion of the rotary drive shaft 30 is located in the gear box 32 and incorporated in a gear mechanism (not shown), and the stirring blade 2 rotates integrally with the rotary drive shaft 30 by driving the drive motor 31.

  The top end of the rotary shaft holding cylinder 34 is lower than the top end of the cylindrical portion 1a, and protrudes from the rotary shaft holding cylinder 34 and between the rotary shaft holding cylinder 34 and the inner periphery of the cylindrical portion 1a. The heat insulating material 12 is also interposed between the upper side of the rotary drive shaft 30 and the inner periphery of the cylindrical portion 1a. L shown in FIG. 4 indicates the maximum level of buoyancy accommodated in the tank body 1, and the top end of the cylindrical portion 1 a is higher than the maximum level L.

  The stirring blade 2 is entirely made of steel such as SS-400, and as shown in FIGS. 6A to 6C, the short cylindrical mounting base 20 and the outer periphery thereof are equally spaced at 120 ° from each other. The vertical corner bars 21a to 21c that are suspended by being welded and fixed at the three locations, and the base end side of the vertical bars 21a to 21c are fixed to the vertical corner bars 21a to 21c and are inclined along the radial direction of the tank body 1. A plurality of (in the figure, a total of five) rectangular bar-like blade pieces 22a to 22e extending downward, triangular blade pieces 23a and 23b integrated at the lower ends of the vertical rectangular rod bodies 21a and 21b, and a vertical rectangular rod body It is comprised with the reinforcement ring 24 which connects 21a-21c by the lower part side. Then, as shown in FIG. 6C, a gap t <b> 1 is set between the vertical bars 21 a to 21 c and the outer peripheral surface of the tubular portion 1 a of the tank body 1, and the lower end surface of the mounting base 20. And the top end of the tubular portion 1a is set with a gap t2, so that the entire stirring blade 2 is held in a non-contact state with respect to the tank body 1. In the figure, reference numeral 25 denotes a cover plate that is welded and fixed on the mounting base 20 to close the upper end opening of the center hole 20a, and 20b is a pin insertion hole provided in the mounting base 20.

  The square bar-shaped blade pieces 22a to 22e of the stirring blade 2 are radially arranged in the three directions from the rotation axis at the same inclination angle, but the arrangement heights are different from each other and the corners are alternately alternately arranged from the higher side. The orientation is changed between a posture in which one ridge line of the rod shape is upward and a posture in which one side surface is upward. In addition, the triangular blade pieces 23a and 23b have an upper edge that is obliquely downward at the same inclination angle as the rectangular rod-shaped blade pieces 22a to 22e, and a lower edge that has an arc shape along the inner bottom surface of the tank body 1. The upper edge height is different. And these blade | wing pieces 22a-22e, 23a, 23b are set so that the vertical cross section which match | combined these rotation track | orbits may continue substantially without the clearance gap.

  Thus, the buoyancy treatment tank 10 is screwed and fixed to the pedestal 5A at the peripheral portion on the lower surface side, but the horizontal direction can be changed in units of 90 ° at the time of the fixing. With the forklift claw insertion portion 51 on the handlebar 17 side as the rear, the protruding direction of the discharge port 1c can be set to either the front or left and right.

  As shown in detail in FIGS. 7 (a) to 7 (c), a pair of left and right strip plate-shaped guide mounting brackets 16 are disposed on both sides of the discharge port 1c at the upper part of the float processing tank 10. A pair of right and left vertical ashes are secured using an inward locking groove 16a that is fixed between the upper edge 1b of the tank body 1 and each guide mounting bracket 16 and is fixed so as to be arranged in a letter shape. A discharge guide plate 7 is attached, and an extraction guide member 6 is further attached via both ash discharge guide plates 7. Further, the opening of the buoyancy treatment tank 10 is almost sealed off by the top plate portion 61 of the extraction guide member 6 and the heat insulating cover 9. In FIG. 2, reference numeral 14 denotes a terminal box of the sheathed heater 13, and reference numeral 15 denotes an outlet box for connecting an external power source.

  The pair of left and right ash discharge guide plates 7 are integrally connected to each other in a state where they are arranged in a square shape via a horizontal connection bar 71 and a bracket plate 72 projecting forward from the vicinity of both ends thereof. The member 70 is comprised. At the lower end portion of each ash discharge guide plate 7, a latch formed between a latching protrusion 7a projecting outward by bending over almost the entire length and two upper and lower strip pieces 7b fixed to the inner surface side. A groove 73 is provided, and both locking protrusions 7a are inserted into both locking grooves 13a on the tank body 1 side as shown in FIG. Locked impossible. Further, the extraction guide member 6 is provided with a perforated plate 61 made of punching metal curved in a convex shape on the lower surface side of the substantially trapezoidal top plate portion 61 so as to be close to the front edge of the top plate portion 61. In addition, a downward U-shaped handle 62 is fixed to a central position on the upper surface side of the top plate portion 61. Thus, the extraction guide member 6 is inserted into the left and right engaging grooves 73 of the discharge guide member 70 that is first attached to the float processing tank 10 by inserting the left and right side edge portions of the top plate portion 61 into the extraction guide member 6. In this attached state, the perforated plate 61 is disposed close to the inside of the discharge port 1 c of the tank body 1.

  As shown in FIGS. 1 to 3, the heat insulating cover 9 is a notched circular flat plate portion 91 having an outer diameter slightly larger than the opening diameter of the tank body 1, and a hexagonal shape bulging upward at the center of the flat plate portion 91. A central bulging portion 92 and a rectangular tubular bulging portion 93 bulging upward along a radial direction parallel to the notch side edge 91a of the flat plate portion 91 are formed. A pair of left and right downward U-shaped handles 94 are fixed to the left and right. Thus, the heat retaining cover 9 is covered with the top plate portion 61 of the extraction guide member 6 by covering the peripheral edge of the cutout circular flat plate portion 91 so as to be placed on the upper edge portion 1b of the tank main body 1. The entire opening is almost shielded. The central side of the stirring blade 2 protruding higher than the upper edge 1b of the tank body 1 is accommodated in the central bulging portion 92 of the heat insulating cover 9.

  This buoyancy treatment apparatus extracts and collects the non-ferrous metal melt separated by specific gravity by tilting the buoyancy treatment tank 10 at the melt recovery position and the apparatus main body M1 composed of the buoyancy treatment tank 10 and the carriage 8A. And tilting means. As the tilting means, a tilting frame 41 is tilted by the power cylinder 42 as in the tilting means 4A illustrated in FIGS. 8 and 9, or a pawl holding that is rotatable as in the tilting means 4B illustrated in FIG. Various systems such as a system using a rotary forklift having a portion (illustration of the vehicle body is omitted) can be adopted. Therefore, depending on the type of tilting means, the tilting may be in the front-rear direction or the left-right direction, but the horizontal direction of the buoyancy treatment tank 10 can be changed with respect to the base 5A as described above. Depending on the tilting direction, the discharge port 1c can be set to be on the lower side when tilting.

  The tilting frame 41 of the tilting means 4A shown in FIGS. 8 and 9 is formed in a square hook shape opened upward and rearward by assembling a channel material or an angle material, and stepped carriage supports on the left and right sides of the inner lower part thereof. A portion 41a is provided. The upper left and right sides of the tilt frame 41 are pivotally supported on the tops of the left and right columns 44 via a pivot 43 fixed to the tilt frame 41, and are suspended so as to tilt forward and backward between the columns 44. Yes. The power cylinder 42 is an electric ball screw type driven by a motor 40, and is pivotally supported by a pivot base 45 so as to be able to swing back and forth, and the distal end portion of the telescopic rod 42a is a pivot 43 on one side. Is pivotally connected to the tip of a lever 46 fixed to the outer end of the lever 46b through a pin 42b, and the tilting frame 41 is held in a horizontal position when the telescopic rod 42a is extended, and the telescopic rod 42a is contracted. The tilt frame 41 is set to be in a forward tilt posture.

  In order to float a non-ferrous metal melt such as aluminum or an alloy thereof with the float treatment apparatus having the above-described configuration, first, an ash discharge guide member 70 and an extraction guide are placed on the float treatment tank 10 as shown in FIGS. The tank body 1 is preheated to a predetermined temperature by energizing the sheathed heater 13a of the preheating mechanism 13 with the member 6 and the heat insulating cover 9 attached. The degree of preheating varies depending on the type of non-ferrous metal to be used, but in general, aluminum and its alloys should be set to be about 300 to 400 ° C. at the inner bottom of the tank body 1, A radiation thermometer can be used.

  After the preheating, the energization to the sheathed heater 13a is stopped, the carriage 8A equipped with the float processing tank 10 is carried to a melting furnace (not shown), stopped in front of the scraping opening, and the heat insulating cover 9 is removed. After that, the float in the furnace is scraped out with an appropriate scraping tool and put into the tank body 1 through a chute or the like, and the stirring blade 2 is rotated by the operation of the rotation drive means 3 to stir and crush the float. To do. At this time, since the tank body 1 is preheated and heated to a high temperature, even if the buoy immediately after being put into the tank body 1 comes into contact with the tank wall surface, heat is not taken away, and thus the non-ferrous metal melt in the buoy There is no fear of partially solidifying, and it is difficult to cool the entire buoyancy, so that the subsequent processing can be performed with sufficient time.

  In the stirring crushing process, the specific gravity separation between the float and the non-ferrous metal melt proceeds by the stirring action, and the melt that has been taken into the lump is also released by crushing the lump lump. The melt settles and accumulates at the bottom of the tank body 1. In particular, in this embodiment, the stirring blade 2 has blade pieces 22a to 22e, 23a, and 23b that project radially from the center in three directions, and these blade pieces rotate in the tank body 1 at different heights. Therefore, the supplied buoy can be efficiently and uniformly crushed quickly, and the specific gravity separation of the nonferrous metal melt can easily proceed. As a result, the recovery rate and processing efficiency of the melt are improved. In the molten aluminum, the specific gravity of aluminum is about 2.7, whereas the specific gravity of the float oxide is about 1.37, and there is a sufficient specific gravity difference for separation by gravity.

  Thus, when the tilting means 4A is used for extracting and collecting the non-ferrous metal melt separated by specific gravity, the forklift claw insertion portion 87 of the carriage 8A (pedestal 5A) is used with the handle bar 81 of the carriage 8A removed. The flotation treatment tank 10 is lifted together with the carriage 8A from the rear side by a normal forklift (not shown) in which the holding part simply moves up and down and is transported to the melt recovery position. Then, as shown by the solid lines in FIGS. 8 and 9, the carriage 8A is brought into the horizontal tilting frame 41, and the left and right mounting plates 55 of the pedestal 5A are placed on the pedestal receiving portion 41a with the discharge port 1c facing forward. The wheel is placed on the tilting frame 41 with the wheels 52 and 53 floating. Next, the power cylinder 42 is contracted, the tilting frame 41 is tilted forward as shown by the phantom line in FIG. 9, and the float processing tank 1 is tilted together with the carriage 8 </ b> A to flow out from the discharge port 1 c of the processing tank 10. The non-ferrous metal melt to be poured is poured into a receiving tank 47 with wheels disposed below, finally cooled and solidified, and recovered as an ingot. In this case, as shown in FIGS. 1, 2, 8, and 9, the buoyancy treatment tank 10 is previously attached to the base 5 </ b> A in a posture in which the discharge port 1 c faces forward.

  On the other hand, when the tilting means 4B is used for extraction and collection, the buoyancy treatment tank 10 is previously attached to the base 5A so that the discharge port 1c faces left as shown in FIG. Then, after the nonferrous metal melt is separated from the contained buoy, the forklift pawl insertion part 51 of the carriage 8A is used with the handle bar 81 of the carriage 8A removed, and the above-mentioned rotation is possible. The float 8 is lifted together with the carriage 8A by a rotary forklift having a claw holding part and carried to a melt recovery position, and is further lifted as shown by the solid line in FIG. 10, and the claw holding part is rotated as it is. If the floating treatment tank 10 is tilted to the left together with the carriage 8A as shown in the phantom line in the figure, the non-ferrous metal melt flowing out from the discharge port 1c of the treatment tank 10 is poured into the receiving tank 47 with wheels disposed below. Good. In addition, the code | symbol 48 in a figure shows the fork nail | claw of the rotary forklift inserted in the nail | claw insertion part 51 for forklifts of the trolley | bogie 8A.

  In the extraction and recovery by the tilting means 4A and 4B, when the buoyancy treatment tank 10 is tilted, the floating plate 61 of the extraction guide member 6 disposed inside the discharge port 1c is prevented from discharging the buoyancy. There is an advantage that only the non-ferrous metal melt can be efficiently discharged and recovered from the discharge port 1c.

  Next, in order to take out the buoyancy remaining in the buoyancy treatment tank 10 after the recovery of the non-ferrous metal melt, the buoyancy treatment tank 10 is temporarily returned to the horizontal position, the extraction guide member 6 is removed, and then again. By tilting the buoyancy treatment tank 10, the buoyancy may be discharged and accommodated in a required container, for example, the same type as the wheeled tank 47 and having a large capacity. When discharging the float, it is preferable to rotate the stirring blade 2 to promote the discharge. At this time, since the ash discharge guide plates 7 of the ash discharge guide member 70 are arranged in a square shape on both sides of the discharge port 1c, the buoy is guided to the discharge port 1c and efficiently discharged without scattering. Discharged from.

  In the buoyancy processing apparatus of the first embodiment, the pedestal 5A (cart 8A) has no tilting means, and the apparatus main body M1 can be configured to be narrow and compact. Even if the passage between the transfer positions is narrow, the carriage 8A can move without trouble, and even if there is a large difference in height between the transfer positions, it can be easily loaded and unloaded by a forklift. Moreover, even if the tilting direction at the melt recovery position is different as described above, the same buoyancy treatment tank 10 and pedestal 5A (cart 8A) can be shared, so that the production cost can be reduced by mass production of the apparatus main body M1. It can be planned. Further, when there are a plurality of melting furnaces or a large furnace, a plurality of carts 8A provided with the floatation tank 10 are operated, and the extraction and recovery of non-ferrous metal melts by these are sequentially performed by a single tilting means. It is also possible to do this.

  In any of the tilting means 4A and 4B illustrated, the non-ferrous metal melt is extracted by tilting the buoyancy treatment tank 10 together with the carriage 8A, so that the extraction and recovery operation is mechanically efficient. There is an advantage that can be done. In particular, in the tilting means 4B, the rotary forklift used as the tilting means can also be used as the moving means between the transfer position and the melt recovery position, so that the apparatus configuration as a whole buoyancy processing apparatus is extremely simple. Therefore, there is an advantage that the equipment cost can be greatly reduced.

  On the other hand, in this embodiment, the rotational drive shaft 30 is arranged in a non-contact state inside the tubular portion 1a rising from the center of the bottom of the tank body 1, and the top of the rotational drive shaft 30 protruding from the top end of the tubular portion 1a. Since the stirring blades 2 are connected to each other, the high heat of the floats stored in the tank body 1 is not easily transmitted to the rotary drive shaft 30, and the deterioration of each part of the rotary drive means 3 due to the high heat is prevented, so that the entire apparatus is excellent. Demonstrate durability.

  The apparatus main body M2 in the levitating apparatus of the second embodiment shown in FIGS. 11 and 12 is composed of the levitating treatment tank 10 containing the same stirring blade 2 as in the first embodiment and a pedestal 5B. The orientation of the buoyancy treatment tank 10 can be changed in units of 90 ° with respect to the pedestal 5B in the same manner as in the first embodiment, but the pedestal 5B assembled with the buoyancy treatment tank 10 is placed on the rail track R. In a state where it is placed on the traveling carriage 8B, it is moved between the float receiving position and the transfer position.

  The pedestal 5B, like the pedestal 5A of the first embodiment, is fixedly provided with the drive motor 31 and the gear box 32 of the rotation driving means 3 at the center, and is erected on the mounting frame 50b of the gear box 32. A rotary drive shaft 30 is rotatably held by the rotary shaft holding cylinder 34 in a protruding state, and a forklift pawl is opened at the front and rear ends by square tube members 57 that are horizontally long and fixed on both left and right sides. The portion 51 is configured, and a pair of left and right columnar brackets 58 is provided upright on the front side, and includes a front leg plate 59a and a pair of left and right support legs 59b on the rear side. Further, the carriage 8B has a pair of left and right wheels 81 on the front and rear, and a shelf 8b on which a controller 18 is mounted is screwed in a protruding manner behind a flat carriage body 8a having substantially the same plane size as the base 8B. A vertical cylindrical handle mounting portion 84 is provided at the side end of the shelf 8b for detachably fitting the lower end portion of the handle bar 17.

  In order to perform the float processing of the non-ferrous metal melt by the float processing apparatus of the second embodiment, first, the apparatus main body M2 is placed on the carriage 8B in a posture in which the forklift claw insertion portion 51 faces the side of the rail track R1. Then, the rail track R1 is moved and carried to a target melting furnace (not shown), and the buoyancy in the furnace is scraped out and put into the tank body 1 as in the first embodiment. Next, while stirring and crushing the float with the rotation of the stirring blade 2, the carriage 8B is moved to the transfer position, and the apparatus main body M2 is transferred from the carriage 8B to the forklift at the transfer position, and the melt recovery position Carry to. Then, at the melt recovery position, the apparatus main body M2 is tilted by the tilting means, so that the non-ferrous metal melt separated by specific gravity flows down from the discharge port 1c, and flows into the receiving tank 47 with wheels waiting on the lower side for recovery. . Further, the float remaining in the tank main body 1 after this extraction and recovery may be discharged by tilting the apparatus main body M2 again as in the first embodiment.

  As the tilting means, as in the first embodiment described above, the tilting frame 41 is tilted by the power cylinder 42 as in the tilting means 4A illustrated in FIGS. 8 and 9, or the tilting illustrated in FIG. Various methods such as a method using a rotary forklift like the means 4B can be adopted. Thus, as to the difference in tilt direction depending on the type of tilting means, as in the first embodiment, the horizontal direction of the buoyancy treatment tank 10 installed on the pedestal 5B is changed, so that it can be discharged during tilting. The outlet 1c can be set on the lower side.

  The buoyancy treatment apparatus of the third embodiment shown in FIGS. 13 to 15 uses the apparatus main body M2 including the buoyancy treatment tank 10 and the pedestal 5B similar to those of the second embodiment described above, but is equipped with tilting means 4C. The apparatus main body M2 is placed on the large carriage 8C and is moved along the three parallel rail tracks R between the float receiving position and the melt recovery position.

  The cart 8C in this case is divided into a main cart 80 corresponding to the cart body 8a of the cart 8B in the second embodiment and sub-carts 81 and 82 that are detachably connected to the front and rear of the main cart 80. The main body 80 is mounted with the apparatus main body M2 in a posture in which the discharge port 1c of the buoyancy treatment tank 10 is directed to the side of the rail track R. Further, one of the pair of support columns 44 that pivotally support the apparatus main body M2 is erected on the front side sub-cart 81. Further, a power cylinder 42 and a controller 18 as a tilting mechanism of the tilting means 4C are mounted on the rear side sub-cart 82, and the remaining one of the pair of support columns 44 is erected and provided at the rear edge. A handle bar 17 is detachably attached to a vertical cylindrical handle attachment portion 84. The main carriage 80 and the front side auxiliary carriage 81 have left and right wheels 83 mounted on the right and middle rail tracks R. However, the rear side auxiliary carriage 81 having a large left and right width mounted with the power cylinder 42 is mounted. The left and right wheels 83 are placed on the right and left rail tracks R.

  In the apparatus main body M2 on the main carriage 80, a pair of columnar brackets 58 of the pedestal 8B are arranged on both sides of the discharge port 1c, and both ends of the pivot 43 inserted and fixed to the upper ends of both columnar brackets 58 are both auxiliary. It is pivotally supported on the top of the column 44 of the carriages 81 and 82. Further, a lever 46 is fixed to one end side of the pivot 43, and the tip of the telescopic rod 42a of the power cylinder 42 is pivotally connected to the tip of the lever 46 via a pin 42b. Accordingly, the apparatus main body M2 is held in a posture in which the leg plate 59a located on the discharge port 1c side is floated and the left and right pair of support legs 59a are placed on the main carriage 80 in the extended state of the telescopic rod 42a. On the other hand, when the telescopic rod 42a is in the contracted state, as shown by the imaginary line in FIG.

  In order to perform the floatation treatment of the non-ferrous metal melt by the float treatment apparatus of the third embodiment, first, the carriage 8C carrying the apparatus main body M2 is carried to a melting furnace (not shown), and the first and first As in the second embodiment, the float in the furnace is scraped out and put into the tank body 1, and then the carriage 8 </ b> C is moved to the melt recovery position while stirring and crushing the float with the rotation of the stirring blade 2. At this melt recovery position, the power cylinder 42 is contracted by driving the motor 40 to tilt the apparatus main body M2, so that the non-ferrous metal melt separated by specific gravity flows out from the discharge port 1c and waits downward. It is poured into a receiving tank 47 with wheels to be collected. Further, the float remaining in the tank main body 1 after this extraction and recovery may be discharged by tilting the apparatus main body M2 again, as in the first and second embodiments.

  Thus, the carriage 8C is divided into a main carriage 80 on which the apparatus main body M2 is mounted and sub-trolleys 81 and 82 on which the tilting mechanism of the tilting means 4C and the processing tank pivot support section are mounted. Since the sub-carts 81 and 82 can be connected and disconnected, the non-ferrous metal melt can be extracted and recovered quickly and efficiently by moving between the float receiving position and the melt recovery position in the connected state. Only the carriage 80 can be used to move between the float receiving position and the transfer position as in the carriage 8B of the second embodiment. Also, the apparatus main body M2 has the same configuration when using the tilting means 4C as in the third embodiment and when using the tilting means 4A and 4B exemplified in the first and second embodiments. Can be shared. Therefore, this floatation processing apparatus can deal widely with the difference in the passage conditions in the surroundings of the melting furnace by making the main part of the apparatus common, and can reduce the manufacturing cost by mass production.

  Although not shown in the second and third embodiments, the extraction guide as used in the first embodiment is also used for the buoyancy treatment tank 10 of the apparatus main body M2 mounted on the carriages 8B and 8C that travel on the rail. It is good also as a structure which attaches the member 6, the ash discharge | emission guide plate 7, the heat retention cover 9, etc. FIG. Moreover, the float processing tank 10 used by this invention may not provide the preheating mechanism 13 which consists of the illustrated sheathed heater 13a. In addition, in the buoyancy processing apparatus of the present invention, the configuration of the stirring blade 2, the connection structure of the stirring blade 2 and the rotation drive shaft 30, the tilting mechanism of the tilting means, the rotation transmission mechanism of the rotation driving means 3, and the carriages 8A to 8C Various modifications can be made to the detailed configuration such as the form in addition to the embodiment.

DESCRIPTION OF SYMBOLS 1 Tank main body 1a Tubular part 1b Upper edge part 1c Discharge port 10 Flotation processing tank 2 Stirring blade 20 Mounting base 3 Rotation drive means 30 Rotation drive shaft 30a Top part 4A-4C Tilt means 41 Tilt frame 42 Power cylinder (tilt mechanism)
43 Axis (Treatment tank pivot)
44 strut (treatment tank pivot)
5A, 5B Pedestal 51 Forklift claw insertion part 52, 53 Wheels 8A-8C Carry 80 Main car 81, 82 Sub car M1, M2 Device main part R Rail track

Claims (8)

A flotation treatment apparatus used for stirring and crushing a float produced in a non-ferrous metal melting furnace and separating and recovering a non-ferrous metal melt mixed in the float from a flotation crushed material,
Floating treatment tank that opens upward and accommodates buoyancy, a stirring blade disposed in the buoyancy treatment tank, rotation driving means for the stirring blade, and the non-ferrous metal melt separated by specific gravity And tilting means for tilting the buoyancy storage tank,
A discharge port that protrudes laterally is formed at the upper edge of the buoyancy treatment tank, and the rotation driving means is attached to a pedestal having a forklift claw insertion portion, and the buoyancy treatment tank is attached to and detached from the pedestal. A non-ferrous metal flotation treatment apparatus characterized in that the flotation treatment apparatus is installed so as to be changeable in a horizontal direction.   A cylindrical part standing upright at the center of the bottom of the tank body of the float processing tank is integrally formed, and the rotational drive shaft of the rotational drive means provided on the pedestal is concentrically in a non-contact state inside the cylindrical part The non-ferrous metal molten metal float treatment apparatus according to claim 1, wherein the mounting base of the stirring blade is connected to the top of the rotation drive shaft protruding from the cylindrical portion so as not to be relatively rotatable. .   The float processing apparatus for molten non-ferrous metal according to claim 1 or 2, wherein wheels are attached to the pedestal to constitute a carriage.   The float apparatus for molten non-ferrous metal according to claim 1 or 2, wherein a pedestal on which the float tank is installed is detachably mounted on a carriage traveling on a rail track.   A tilt frame as the tilting means and its tilting mechanism are installed at the melt recovery position, and a pedestal on which the buoyancy processing tank is installed is placed on the tilting frame via a forklift, and the buoyancy processing tank is tilted by the tilting frame. The non-ferrous metal molten metal float treatment apparatus according to any one of claims 1 to 4, wherein the extracted non-ferrous metal melt is caused to flow out of the discharge port by tilting.   The tilting means is composed of a rotary forklift having a rotatable claw holding portion, and the pedestal on which the buoyancy processing tank is installed is lifted by the rotary forklift, and the buoyancy treatment is performed by turning the claw holding portion. The float apparatus for molten nonferrous metal according to any one of claims 1 to 4, wherein the extracted nonferrous metal melt is caused to flow out of the discharge port by tilting the tank.   The tilting mechanism of the tilting means and the treatment tank pivot part are mounted on the carriage traveling on the rail track, and the floatation tank is pivotally supported by the tilting mechanism in the state where the float tank is pivotally supported by the treatment tank pivot part. The float apparatus for non-ferrous metal melt according to claim 1 or 2, wherein the apparatus is configured to cause the extracted non-ferrous metal melt to flow out of the discharge port by tilting.   The cart is divided into a main cart that mounts a pedestal on which the buoyancy treatment tank is installed, and a sub cart that is equipped with a tilting mechanism of the tilting means and a processing tank pivot, and the sub cart with respect to the main cart. The non-ferrous metal molten metal float treatment apparatus according to claim 7, which is configured to be connected and disconnected.

Images