WO2008038556A1 - Appareil de récupération de métaux précieux - Google Patents

Appareil de récupération de métaux précieux Download PDF

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Publication number
WO2008038556A1
WO2008038556A1 PCT/JP2007/068231 JP2007068231W WO2008038556A1 WO 2008038556 A1 WO2008038556 A1 WO 2008038556A1 JP 2007068231 W JP2007068231 W JP 2007068231W WO 2008038556 A1 WO2008038556 A1 WO 2008038556A1
Authority
WO
WIPO (PCT)
Prior art keywords
combustion chamber
combustion
heating container
molten metal
metal recovery
Prior art date
Application number
PCT/JP2007/068231
Other languages
English (en)
Japanese (ja)
Inventor
Tamio Okada
Tadao Sasaki
Katsuyuki Shirakawa
Long Yun Piao
Hideo Yoshikawa
Original Assignee
Nippon Crucible Co., Ltd.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Crucible Co., Ltd. filed Critical Nippon Crucible Co., Ltd.
Publication of WO2008038556A1 publication Critical patent/WO2008038556A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C22B11/02—Obtaining noble metals by dry processes
    • C22B11/021—Recovery of noble metals from waste materials
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B11/00—Obtaining noble metals
    • C22B11/02—Obtaining noble metals by dry processes
    • C22B11/021—Recovery of noble metals from waste materials
    • C22B11/025—Recovery of noble metals from waste materials from manufactured products, e.g. from printed circuit boards, from photographic films, paper, or baths
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/001—Dry processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/001—Dry processes
    • C22B7/003—Dry processes only remelting, e.g. of chips, borings, turnings; apparatus used therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/027—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment pyrolising or gasifying stage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/04—Crucible or pot furnaces adapted for treating the charge in vacuum or special atmosphere
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/0806—Charging or discharging devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/10—Crucibles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/14—Arrangements of heating devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B14/00—Crucible or pot furnaces
    • F27B14/08—Details peculiar to crucible or pot furnaces
    • F27B14/14—Arrangements of heating devices
    • F27B14/143—Heating of the crucible by convection of combustion gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/08—Screw feeders; Screw dischargers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/14—Charging or discharging liquid or molten material
    • F27D3/145—Runners therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2201/00—Pretreatment
    • F23G2201/50—Devolatilising; from soil, objects
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/20—Combustion to temperatures melting waste
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the present invention relates to a valuable metal recovery device for recovering valuable metals contained in an object to be treated such as waste.
  • Patent Document 1 a valuable metal recovery apparatus disclosed in Patent Document 1 is known.
  • the valuable metal recovery device 50 includes an apparatus main body 52 having a combustion chamber 51, a combustion pan 53 for supplying heated gas to the combustion chamber 51, and a combustion generated in the combustion chamber 51.
  • a flue (not shown) for discharging the gas to the outside and a heating container 54 accommodated in the combustion chamber 51 are provided.
  • the heating container 54 has an opening that can be freely opened and closed by a lid 55, and includes a communication portion 56 that communicates with the upper portion of the combustion chamber 51 with the lid 55 closed.
  • Patent Document 1 International Publication No. 2006/035570 Pamphlet
  • the valuable metal recovery apparatus 50 described above can burn the waste in the heating container 54 in a reducing atmosphere, it can suppress oxidation of the molten metal and efficiently recover the valuable metal. I can do it. However, in the case of waste with a relatively large specific surface area, such as aluminum chips and aluminum beverage cans, even if such valuable metal recovery equipment 50 is used, it is oxidized during the heat treatment to form oxide slag. In addition, there is a possibility that inclusions, mainly oxides, may be mixed in the dissolved material, so there is room for further improvement in terms of recovering high-quality aluminum with high yield and high efficiency.
  • an object of the present invention is to provide a valuable metal recovery device that can efficiently recover high-quality valuable metals.
  • the object of the present invention is a valuable metal recovery device for recovering a valuable metal contained in an object to be processed, the apparatus main body having a combustion chamber, and a combustion pan for supplying a heated gas to the combustion chamber. And a flue that discharges the combustion gas generated in the combustion chamber to the outside, and a heating container that is disposed in the combustion chamber and accommodates an object to be processed, the heating container having a bottom and an upper part. A communication portion having an opening that can be sealed and communicating with an upper portion of the combustion chamber is formed, and a charging device that continuously charges an object to be processed into the heating container through the opening; This is achieved by a valuable metal recovery device further comprising a stirring device for stirring the generated molten metal.
  • the stirring device includes a stirring blade that is immersed in the molten metal and generates a vortex in the molten metal by rotation, and the charging device is covered in the vortex. Arranged to drop the processed object!
  • the heating container includes a discharge passage whose lower portion communicates with the outside of the apparatus main body via a side wall of the combustion chamber, and through a molten metal discharge port formed at a tip of the discharge passage.
  • the molten metal can be discharged, and in this case, it is preferable that the molten metal discharge port is formed above the stirring blade!
  • the discharge channel may include an upper guide portion that is led out from a side wall of the container main body and extends upward while adjoining the side wall.
  • the molten metal discharge port is connected to the upper guide portion. It can be formed at the tip.
  • the discharge channel may be provided with a maintenance port that is formed below the molten metal discharge port and communicates with the vicinity of the bottom of the heating container.
  • the heating container can include a graphite crucible in which the discharge flow paths are integrated.
  • the heating container may include a cylindrical preheating tower that protrudes above the combustion chamber and seals the opening.
  • the charging device is provided in the preheating tower. Can do.
  • the preheating tower is arranged so as to be movable along the upper surface of the apparatus main body.
  • the stirring blade moves the preheating tower when moving the preheating tower. It is preferable to be able to retract upward so as not to interfere with the thermal container.
  • the input device can include a streak conveyor that conveys the workpiece.
  • the combustion chamber includes a first combustion chamber that houses the heating container and a second combustion that surrounds the first combustion chamber by disposing a partition wall therein. And a chamber.
  • the heating container communicates with the second combustion chamber via the communication portion, and the combustion burner is disposed at least in the first combustion chamber, and is configured as the first combustion chamber. So that the combustion gas generated in step 2 is discharged to the second combustion chamber through the combustion gas discharge unit, and is discharged to the outside through the flue gas in the second combustion chamber. Can be configured.
  • FIG. 1 is a cross-sectional view of a valuable metal recovery device according to an embodiment of the present invention.
  • FIG. 2 is a cross-sectional view of a valuable metal recovery device according to another embodiment of the present invention.
  • FIG. 3 is a cross-sectional view of a valuable metal recovery device according to still another embodiment of the present invention.
  • FIG. 4 is a cross-sectional view of a conventional valuable metal recovery device.
  • FIG. 1 is a cross-sectional view of a valuable metal recovery device according to an embodiment of the present invention.
  • the valuable metal recovery device 1 includes a device main body 10, a combustion paner 20 and a flue 30 attached to the device main body 10.
  • the apparatus main body 10 is configured by lining a refractory material 12 on an iron casing 11, and a space surrounded by the refractory material 12 is a combustion chamber 13.
  • a combustion chamber 13 In the combustion chamber 13, an exhaust port 131 is formed in the lower part, and the flue 30 is connected to the exhaust port 131.
  • a support base 14 is installed on the floor surface of the combustion chamber 13, and a heating container 15 is placed on the support base 14.
  • An air supply port 132 for introducing combustion air from the outside is formed in the side wall of the combustion chamber 13.
  • the air supply port 132 is formed in three force points at substantially equal intervals along the circumferential direction with respect to the combustion chamber 13 having a circular shape in plan view, and is formed in three upper and lower stages at each point.
  • the flow rate of the air introduced from each air supply port 132 can be individually controlled by adjusting the opening degree of the valve 132a installed in the pipe connected to the air supply port 132.
  • the direction in which the combustion air is introduced from the air supply port 132 is a force that is substantially the same as the radial direction of the combustion chamber 13 in the present embodiment.
  • the air inlet 132 may be formed so that air is introduced along the tangential direction of the chamber 13.
  • the air introduced from the air supply port 132 is not limited to normal temperature, and is preheated by, for example, exchanging heat with the combustion gas exhausted through the exhaust port 131 or other waste heat. Air may be introduced. Further, the formation position and the number of the air supply openings 132 are limited to the present embodiment. It can be set as appropriate depending on the necessary air introduction amount. Further, when sufficient air can be introduced from the combustion burner 20 described later, the air supply port 132 is not necessarily provided.
  • the support base 14 is formed in a cylindrical shape, has a ventilation part 141 on a side wall, and supports the heating container 15 by having an end surface abutting against the bottom surface of the heating container 15.
  • the ventilation portion 141 is a groove portion force formed at four force locations at equal intervals on the upper and lower ends of the support base 14.
  • the heating container 15 has a bottom and has an opening 15a at the top, and is made of a material having good thermal conductivity.
  • the main part is made of a graphite crucible. Consists of a container body 151. Graphite crucibles are widely used in crucible furnaces for melting non-ferrous metals, mainly composed of scaly graphite and silicon carbide, having high thermal conductivity and excellent oxidation resistance, heat resistance and thermal shock resistance. Excellent durability in a wide temperature range from low to high.
  • One or more grooves are formed in the upper part of the container main body 151, and the upper end of the container main body 151 is connected to the lower surface of the disc-shaped holding body 152 via a cushioning material (not shown) such as ceramic fiber. By the contact, the groove functions as the communication portion 153.
  • the holding body 152 is detachably fixed to the upper surface of the apparatus main body 10, and the upper end surface of the portion protruding upward is a horizontal plane.
  • the size and number of the communication portion 153 are not particularly limited, but it is preferable that the number is preferably as small as possible so that dust or ash generated in the heating container 15 is not discharged. S is preferred.
  • a filter in the communication part 153 it is possible to reliably prevent the discharge of dust and ash.
  • the filter include a bata-like, felt-like, sheet-like, and mesh-like breathable member made of a ceramic fiber or the like.
  • baffle plates around the communication part 153 so that dust ash in the container body 151 does not scatter due to the flow of combustion gas generated in the combustion chamber 13. Also good.
  • the communication part 153 is preferably formed so as to communicate with the upper part of the combustion chamber, but its shape does not necessarily have to be a groove as in this embodiment.
  • a through hole formed in the side wall of the heating container 15 can be used as the communication portion 153.
  • a protrusion is provided on the lower surface of the holding body 152, and this protrusion is formed by contacting the upper end surface of the container body 151.
  • a gap between the protrusions may be used as the communication portion 153.
  • a gap formed between the upper end surface of the container main body 151 and the lower surface of the holding body 152 may be used as the communication portion 153.
  • Combustion burner 20 has a known configuration including a pilot burner that performs pre-combustion and a main burner that performs main combustion, and fuel supplied through fuel pipe 21 and combustion air supply pipe 22 respectively. By appropriately adjusting the flow rate (air ratio) of the combustion air, the combustion load and combustion temperature can be controlled.
  • the combustion pan 20 is provided at a lower position than the communication part 153 in the upper part of the combustion chamber 13 so that it is discharged from the exhaust port 131 while swirling around the generated combustion gas force heating vessel 15.
  • the heating container 15 is arranged in the tangential direction and slightly downward from the horizontal direction.
  • the arrangement of the combustion panner 20 and the exhaust port 131 is not necessarily limited to that of the present embodiment, but the combustion gas supplied from the combustion panner 20 to the combustion chamber 13 is sufficiently stirred in the combustion chamber 13, and It is preferable that the arrangement is such that a sufficient combustion time until exhaust from the exhaust port 131 can be secured. If necessary, a stirring plate may be installed inside the combustion chamber 13 to encourage stirring and mixing of the combustion gas.
  • the flue 30 is formed such that a pipe extending horizontally from the exhaust port 131 is bent and extends vertically upward. A part of the flue 30 has an enlarged diameter portion 31 having an enlarged cross-sectional area. Is formed. A second auxiliary capable of supplying combustion air from a pressurized air supply source (not shown) such as a blower between the exhaust port 131 and the enlarged diameter portion 31 (that is, upstream of the enlarged diameter portion 31). An air supply pipe 32 is provided. One or more air inlets 321, 21 are formed at the tip of the second auxiliary air supply pipe 32.
  • the combustion air can be supplied to the flue 30 at a desired flow rate.
  • a sealed opening / closing door 301 for cleaning is provided at the bent portion of the flue 30.
  • a plurality of baffle plates 311 are arranged in the up-down direction in the enlarged diameter portion 31, and are introduced from the combustion gas introduced from the exhaust port 131 and the second auxiliary air supply pipe 32. Combustion air is sufficiently mixed and stirred inside the enlarged diameter portion 31 and the residence time is secured! /.
  • the heating container 15 includes a preheating tower 40 having a cylindrical tower body 41.
  • the preheating tower 40 includes a roller 401 at the bottom, and is arranged along the upper surface of the apparatus main body 10. It is possible to move on the rail 402 placed in the drawing through direction.
  • the lower end of the tower body 41 can be tightly fixed to the upper end of the holding body 152 by a fixing means (not shown) in a state where the lower end is moved right above the holding body 152. Thereby, the preheating tower 40 seals the opening 15a of the heating container 15 in a state of protruding upward from the combustion chamber 13.
  • the preheating tower 40 includes an input device 42 for supplying waste containing valuable metals such as aluminum chips into the heating container 15, and an agitation device 44 for stirring the molten metal in the heating container 15. And a heat-resistant camera 46 for observing the combustion state in the heating container 15.
  • the charging device 42 includes a casing 421 provided so as to extend in a direction (horizontal direction) orthogonal to the side wall of the tower main body 41.
  • the casing 421 includes a hono 422 into which waste is charged and a screw conveyor 423 extending horizontally toward the center of the tower main body 41, and an open / close lid 422a is attached to the hopper 422.
  • the screw conveyor 423 has spiral screw blades 423a on its outer peripheral surface, and rotates by the operation of the electric motor 424, so that the processing object such as waste thrown in from the hopper 422 is directed toward the tower body 41. And then push it in.
  • a waste discharge port 425 is formed that is opened at a substantially middle position between the inner peripheral surface of the main body 41 and the central axis, and the transported waste is discharged from the waste discharge port. Drops into heating container 15 from 425. The rotation speed of the electric motor 424 can be adjusted, and the supply amount when the waste is continuously supplied into the heating container 15 can be controlled. In addition, a cooling water jacket 426 is provided around the casing 422, and the force S for cooling the waste in the casing 422 being conveyed is used.
  • the stirring device 44 is fixed to the tip of a shaft 441 made of a heat-resistant material such as stainless steel by screwing or the like with the stirring blade 442, and the base end side of the shaft 441 is preheated. It protrudes upward through a through-hole 40a formed in the upper part and is connected to an electric motor 443.
  • the stirring blade 442 is horizontally rotatable at the lower center in the container main body 151 by transmitting a driving force via the shaft 441 by the operation of the electric motor 443.
  • the shaft 441 is separable at the flange portion 441a, and a sealing fiber or the like is interposed between the shaft 441 and the through hole 40a, thereby maintaining an airtight state.
  • the shaft 4 41 can move up and down in the vertical direction, and when the preheating tower 40 is moved along the rail 402, In addition, the stirring blade 442 can be retracted upward so as not to interfere with the heating container 15.
  • the shape of the stirring blade 442 in this embodiment, a propeller blade is used, and by generating a vortex in the molten metal stored in the container main body 151, the waste that has fallen on the molten metal surface can be promptly removed.
  • the force S is configured to be entrained in the molten metal, and the shape of the blade that causes such an action.
  • a screw blade, a turbine blade, an anchor blade, a paddle blade, etc. are used. You can also.
  • the force with which the number of the stirring blades 442 is four is not particularly limited, and may be two or three, for example. In addition, this is particularly effective when the viscosity of the molten metal in which the stirring blades 442 are provided in a plurality of stages along the axial direction of the shaft 441 is high.
  • the heat-resistant camera 46 can use a CCD camera or the like, and is arranged so as to take an image of the inside of the heating container 15, and the remaining amount of waste in the heating container 15 and the generation of dissolved gas etc. You can check the situation.
  • a discharge channel 154 that is connected to the outside of the apparatus main body 10 through the side wall of the combustion chamber 13 and made of piping for discharging the molten metal to the outside is connected to the lower part of the container main body 151.
  • the discharge channel 154 includes a horizontal portion 155 that extends in the horizontal direction, and an upper guide portion 156 that branches from the horizontal portion 155 and guides the molten metal upward.
  • a maintenance port 155a and a molten metal discharge port 156a are formed at the front ends of the horizontal portion 155 and the upper guide portion 156, respectively, and the molten metal is externally supplied via the hot water discharge pipes 155b and 156b formed on the side wall of the apparatus body 10. It is possible to discharge S.
  • the hot water discharge pipes 155b and 156b are closed by heat insulating lids 155c and 156c, respectively, and during the heat treatment, the maintenance port 155a of the horizontal portion 155 is sealed with a tap 155d and corresponds to the upper guide portion 156.
  • the lid 156c By opening the lid 156c, the molten metal can be continuously discharged from the hot water discharge pipe 156b to the outside.
  • the molten metal discharge port 156a is formed above the stirring blade 442 in a state where the stirring blade 442 is disposed at the stirring position in the heating container 15.
  • the tap 155d is opened during maintenance of the heating container 15.
  • Each air supply port 132 of the combustion chamber 13 and the combustion air supply pipe 22 of the combustion burner 20 are each connected to a pressurized air supply source such as a factory air blower. These may be individually connected to multiple pressurized air sources or the same pressurized air. Even if it branches off from the supply source, it can be connected.
  • the valuable metal recovery device 1 of the present embodiment is a chip or shredded waste containing combustible waste such as oil, plastic, organic paint, rubber, cloth, paper, and wood (for example, aluminum with oil). Or wastes with a relatively large specific surface area, such as copper chips, sash scraps with plastic, cans, metal scrap, etc. It is suitable for recovering valuable metals such as zinc, tin and noble metals with a high yield.
  • the stirring blade 442 is retracted upward and the tower main body 41 is moved to open the upper portion of the container main body 151, and an ingot made of the same material as the valuable metal to be recovered is contained in the container main body 151.
  • the tower main body 41 is moved directly above the container main body 151 and sealed, and high temperature combustion gas is supplied from the combustion burner 20 to the combustion chamber 13, thereby melting the ingot in the container main body 151.
  • the temperature of the combustion chamber should be set appropriately in consideration of the melting temperature of the valuable metal to be recovered.For example, when the metal waste is an aluminum material such as an aluminum beverage can or aluminum chips, the temperature of the combustion chamber 13 Can be set to about 900 ° C.
  • the combustion is performed by on / off control of the main and pilot burners in the combustion burner 20 and by adjusting the opening of the valve 132a of the supply port 132. It can be set to the desired temperature by adjusting the volume and air ratio.
  • the stirring blade 442 is lowered and immersed in the molten metal to operate the stirring device 44, and the stirring blade 442 is rotated. .
  • the molten metal in the container body 151 is swirled by the rotation of the stirring blade 442 to generate a vortex.
  • the liquid level L of the molten metal is lifted at the portion in contact with the inner surface of the container body 151 as shown in the figure, so that the stored molten metal is guided to the outlet pipe 156b via the upper guide part 156 of the discharge channel 154.
  • the molten metal can be supplied to the outside by removing the lid 156c.
  • the molten metal discharge port 156a of the discharge channel 154 is formed above the stirring blade 442, the supply of the molten metal is stopped when the charging device 42 and the stirring device 44 are stopped. Therefore, supply of molten metal consisting of valuable metals and The stoppage can be linked to the operating state of the charging device 42 and the stirring device 44.
  • the inside of the discharge channel 154 is always filled with the molten metal, it is possible to prevent the unburned gas, etc. generated inside the heating vessel 15 from being discharged from the molten metal outlet 156a to the outside. Touch with S.
  • the screw conveyor 423 of the input device 42 is operated to input waste from the hopper 422.
  • the thrown-in waste is transported toward the tower main body 41 by the screw conveyor 423 and falls to the container main body 151 through the opening 15a. Since the opening 15a is hermetically sealed by the preheating tower 40, the combustion inside the container body 151 becomes anoxic or low-oxygen state due to the combustion of the waste that has fallen into the container body 151, and the combustion is performed in a reducing atmosphere. Is called.
  • the ventilation portion 141 is formed in the support base 14 that supports the container main body 151, the combustion gas contacts not only the side wall but also the bottom of the container main body 151, and the entire heating container 15 is It can be heated efficiently.
  • the container body 151 may be filled with a material that promotes carbonization, such as coconut or plastic, if necessary, so as to enhance the reducing atmosphere.
  • the pulverized waste that has fallen into the container main body 151 is quickly caught in the molten metal by the vortex generated by the rotation of the stirring blade 442, and is in a state of being submerged.
  • valuable metals in the waste melt without coming into contact with the outside air, so it is possible to more reliably prevent oxidation of valuable metals.
  • Combustible waste such as oil, paints and plastics other than valuable metals are released in the form of gas by thermal decomposition.
  • the charging device 42 is arranged to disperse and drop the processing object into the vortex generated by the rotation of the stirring blade 442 so that the processing object can enter the molten metal as quickly as possible! / I prefer to do that!
  • the waste discharge port 425 is formed at a substantially intermediate position between the inner peripheral surface of the tower body 41 and the central axis, and the object to be treated can be distributed substantially uniformly on the molten metal surface in the vortex. it can.
  • the surface of the molten metal may be configured to be quickly submerged into the melt by the lower surface of the guide plate!
  • the combustion chamber 13 Since the combustion chamber 13 has a negative pressure due to the high-temperature combustion gas rising up the flue 30 through the exhaust port 131, water vapor generated from waste due to heating of the heating container 15 and organic Unburned gas such as a system material is led out from the communication part 153 to the combustion chamber 13. This unburned gas is burned in the combustion chamber 13 to become a combustion gas, and is discharged from the exhaust port 131 together with the combustion gas of the combustion pan 20.
  • the combustion burner 20 is disposed above the exhaust port 131, and the combustion gas injected from the combustion burner 20 swirls along the wall surface of the combustion chamber 13. It is possible to sufficiently stir in 13 and to ensure a sufficient combustion time of unburned gas in the combustion chamber 13. As a result, complete combustion of the unburned gas in the combustion chamber 13 can be promoted, the exhaust can be maintained in a clean state, and emission of smoke, odor, dust ash and the like can be prevented.
  • combustion air can be introduced into the combustion chamber 13 from the air supply port 132, when the amount of air introduced into the combustion chamber 13 from the combustion partner 20 is insufficient, This shortage can be compensated to ensure complete combustion in the combustion chamber 13.
  • the temperature of the combustion gas supplied from the combustion pan 20 is preferably 800 ° C or higher from the viewpoint of promoting complete combustion of unburned gas and dioxins, etc. preferable.
  • the upper limit of the combustion temperature is determined in consideration of the heat resistance of the material used, but for example, when using a graphite crucible as in this embodiment, it can be used at a high temperature of about 1500 ° C. .
  • the combustion amount of the combustion burner 20 can be reduced.
  • the main burner of the combustion burner 20 may be stopped and only the pilot burner may be burned, or the fuel supply to the combustion burner 20 is stopped and only air at normal temperature is supplied from the combustion burner 20 You may do it.
  • the opening degree of the valve 132a of the air supply port 132 can be adjusted to control the inside of the combustion chamber 13 to have an optimum air-fuel ratio.
  • waste containing materials with high calorific values such as PET resin and chlorinated resin, large self-combustion heat can be obtained.
  • the fuel consumption can be reduced and the high-temperature exhaust gas discharged from the discharge port 131 can be effectively used for boilers and drying.
  • the valuable metal recovery device of the present embodiment can effectively recover the combustion heat of combustible waste, which can recover valuable metals from waste efficiently, and can be applied by creating thermal energy. is there.
  • the gas introduced into the combustion chamber 13 from the air supply port 132 may be other combustion-supporting gas such as oxygen in addition to air, thereby promoting complete combustion in the combustion chamber 13. It is possible
  • the valuable metal recovery device 1 of the present embodiment reliably prevents oxidation of the molten metal by quickly submerging the continuously charged waste into the molten metal in the heating vessel 15 capable of reducing combustion. This is characterized in that high-quality valuable metals can be recovered. Therefore, in order to obtain a large treatment capacity, it is preferable to entrap as much waste as possible in the molten metal in a short time without depositing it on the molten metal surface. For this purpose, it is preferable to increase the swirl speed of the molten metal by the rotation of the stirring blade 442 and to increase the inner diameter of the container main body 151.
  • a container body 151 with an inner diameter of about 400 to 1200 mm is used, and the swirl speed of the melt is about 3 at the fastest outermost circumference. What is necessary is just to set the rotational speed of the stirring blade 442 so that it may be set to -30m / sec. In order to realize such rotation of the stirring blade 442, it is preferable to use a variable rotary stirring propeller device that can rotate at a rotational speed of about 100 to 500 rpm. Increasing the inner diameter of the container main body 151 is also preferable from the viewpoint of enabling stable continuous melting treatment because the molten metal storage amount is increased and the molten metal temperature is easily maintained.
  • the valuable metal recovery apparatus 1 of the present embodiment melts the waste thrown into the heating container 15 into the molten metal. Therefore, in order to recover high-quality valuable metal at a high yield, the heating container 15
  • the structure which can fully heat is preferable. Therefore, as shown in FIG. 2, by disposing a partition wall 1302 inside the combustion chamber 1301, the combustion chamber 1301 surrounds the first combustion chamber 1303 that houses the heating container 15 and the first combustion chamber 1303.
  • a double structure including the second combustion chamber 1304 may be used.
  • the same components as those shown in FIG. 1 are denoted by the same reference numerals.
  • a gap is formed between the upper end of the partition wall 1302 and the lower surface of the holding body 152.
  • a ring-shaped flange portion 1511 is fixed to the upper end of the container main body 151, and an outer edge portion of the flange portion 1511 extends to the second combustion chamber 1304 via the gap.
  • a communication portion 1531 that connects the inside of the heating container 15 and the second combustion chamber 1304 is formed between the flange portion 1511 and the holding body 152.
  • the communication portion 1531 directly communicates with the second combustion chamber 1304 without passing through the first combustion chamber 1303, and a ring-shaped filter 1531a is disposed so as to be replaceable.
  • a first combustion burner 201 is disposed below the first combustion chamber 1303, and a second combustion burner 202 is disposed above the second combustion chamber 1304.
  • the configuration of the first combustion burner 201 and the second combustion burner 202 is the same as that of the combustion burner 20 shown in FIG.
  • Combustion gas generated in the first combustion chamber 1303 by the first combustion burner 201 enters the second combustion chamber 1304 via a combustion gas discharge portion 1305 formed between the flange portion 1511 and the upper end of the partition wall 1302. Discharged.
  • a plurality of spacers 1306 are disposed along the circumferential direction between the first combustion chamber 1303 and the second combustion chamber 1304, and the interior of the second combustion chamber 1304 is maintained at a predetermined size. Yes.
  • the unburned gas generated in the heating container 15 is not supplied, and the combustion is not necessarily completed. Therefore, the heating efficiency of the container main body 151 by the first combustion burner 201 can be increased, and the molten metal can be maintained at a high temperature.
  • the unburned gas force S generated in the heating container 15 merges with the combustion gas generated in the first combustion chamber 1303, and is supplied from the air inlet 132 as necessary. Mixing with air promotes complete combustion. Therefore, it is possible to improve the combustion efficiency and achieve clean combustion while maintaining good heating efficiency for the molten metal in the heating container 15.
  • the total of the volume of the first combustion chamber 1303 and the volume of the second combustion chamber 1304 is the same as the volume of the combustion chamber 13 shown in FIG.
  • the second combustion chamber 202 disposed in the second combustion chamber 1304 is not necessarily required, and only the first combustion chamber 1303 is not required. It is also possible to have a configuration with 201.
  • a plurality of input devices 42 may be provided for the tower main body 41. For example, by disposing a plurality of input devices 42 in a radiating manner from the center of the tower main body 41, it becomes easy to uniformly disperse the waste into the vortex of the container main body 151.
  • the charging device 42 instead of providing the charging device 42 on the side wall of the tower body 41, it may be arranged so that the workpiece falls from the top of the tower body 41! /.
  • a pulverizer may be connected to the hopper 422 of the charging device 42 so that the object to be processed is previously pulverized by the pulverizing device and then charged into the charging device 42.
  • the charging device 42 may appropriately arrange a fixed blade or a rotary blade in the casing 421 in order to promote the pulverization of the waste being conveyed by the screw conveyor 423.
  • the specific configuration of the charging device 42 is not limited to that of the present embodiment, and is capable of dropping an object to be treated such as waste in the vortex of the molten metal generated in the heating container 15.
  • other configurations may be used.
  • a container main body 151 made of a graphite crucible and a discharge flow path 154 also having a heat resistant material force such as a graphite crucible material are integrated.
  • a deformed graphite crucible can be used.
  • the container main body in which the upper guide part 1561 constituting the discharge flow path 1541 integrated with the container main body 151 is not branched from the horizontal part 155.
  • the molten metal may be discharged through a hot water outlet 1562 formed in the middle of the upper guide portion 1561 so as to be guided from the side wall of 151 and extend upward while adjoining the side wall.
  • the temperature of the molten metal discharged from the outlet pipe 156b can be maintained at a high temperature. it can.
  • the container body 151 is composed of a graphite crucible.
  • the melting temperature is low, such as zinc or a low melting point aluminum alloy material, and the metal waste is melted.
  • a container body 151 made of an iron container that is inexpensive and has good thermal conductivity.
  • a container made of a metal other than refractory ceramics or iron can be used as the container body 151.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Geology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Furnace Charging Or Discharging (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Processing Of Solid Wastes (AREA)
  • Crucibles And Fluidized-Bed Furnaces (AREA)

Abstract

L'invention concerne un appareil (1) de récupération de métaux précieux pour récupérer des métaux précieux contenus dans un objet de traitement. L'appareil (1) de récupération de métaux précieux comprend un corps d'appareil (10) ayant une chambre de combustion (13), un brûleur de combustion (20) pour alimenter en gaz de chauffage la chambre de combustion (13), un conduit de fumée (30) pour décharger à l'extérieur le gaz de combustion produit dans la chambre de combustion (13), et un conteneur chauffant (15) disposé dans la chambre de combustion (13) pour contenir l'objet de traitement. Le conteneur chauffant (15) comprend une ouverture à fond (15a) réalisée scellable de manière étanche vers le haut, et une partie de communication (153) communiquant avec la partie supérieure de la chambre de combustion (13). Sont également inclus un dispositif de versement (42) pour verser l'objet de traitement en continu à travers l'ouverture (15a) dans le conteneur chauffant (15), et un dispositif d'agitation (44) pour agiter le métal fondu obtenu dans le conteneur chauffant (15). L'appareil de récupération de métaux précieux permet de récupérer les métaux précieux de grande qualité de façon très efficace.
PCT/JP2007/068231 2006-09-28 2007-09-20 Appareil de récupération de métaux précieux WO2008038556A1 (fr)

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JP2006-264483 2006-09-28
JP2006264483A JP2008082640A (ja) 2006-09-28 2006-09-28 有価金属回収装置

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CN103017518A (zh) * 2011-09-22 2013-04-03 品达科技股份有限公司 金属熔解炉及金属熔解方法
CN105444178A (zh) * 2015-12-09 2016-03-30 张建臣 杂物无害热解炉
CN106766885A (zh) * 2016-11-29 2017-05-31 遵义恒佳铝业有限公司 均匀充分投料的熔炼炉
CN107297489A (zh) * 2017-05-15 2017-10-27 胡逸琴 一种用于轮毂加工的成型装置
CN108463680A (zh) * 2016-01-15 2018-08-28 中央精机株式会社 金属熔化装置
CN110107903A (zh) * 2019-04-30 2019-08-09 四川利百川科技有限公司 一种垃圾立式高温热解气化双旋炉
CN110425875A (zh) * 2019-08-12 2019-11-08 张素烨 一种金属冶炼添加剂投料装置
CN112063852A (zh) * 2020-09-14 2020-12-11 湘潭云萃环保技术有限公司 一种含铜污泥中回收贵金属的设备
WO2020257834A1 (fr) * 2019-06-24 2020-12-30 Sehrschoen Harald Dispositif et procédé pour la fusion de copeaux
WO2022178884A1 (fr) * 2021-02-27 2022-09-01 苏州赛荣建筑装饰工程有限公司 Dispositif d'élimination de métaux lourds dans des déchets en décomposition
CN115823899A (zh) * 2023-01-06 2023-03-21 宁波兴展旺节能科技有限公司 一种浸入式集中熔化炉

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JP5631169B2 (ja) * 2010-05-20 2014-11-26 日本坩堝株式会社 有価金属回収装置
CN102310457A (zh) * 2011-03-09 2012-01-11 维苏威太阳能坩埚(苏州)有限公司 一种混料加料机
KR101377252B1 (ko) * 2011-08-11 2014-03-26 주식회사 예스윈 폐 수지 및 카본으로부터 귀금속 회수장치
AT512275B1 (de) * 2012-03-12 2013-07-15 Pinda Technology Co Ltd Metallschmelzvorrichtung und Verfahren zum Schmelzen von Metall
JP6452182B2 (ja) * 2015-09-26 2019-01-16 株式会社広築 アルミニウム切粉溶解装置及び溶解方法
CN106225479B (zh) * 2016-08-26 2018-03-23 越研环境工程盐城有限公司 一种升温速率快具有废气净化功能的冶炼设备

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Publication number Priority date Publication date Assignee Title
CN103017518A (zh) * 2011-09-22 2013-04-03 品达科技股份有限公司 金属熔解炉及金属熔解方法
CN105444178A (zh) * 2015-12-09 2016-03-30 张建臣 杂物无害热解炉
CN105444178B (zh) * 2015-12-09 2018-04-03 张建臣 杂物无害热解炉
CN108463680B (zh) * 2016-01-15 2020-02-21 中央精机株式会社 金属熔化装置
CN108463680A (zh) * 2016-01-15 2018-08-28 中央精机株式会社 金属熔化装置
CN106766885A (zh) * 2016-11-29 2017-05-31 遵义恒佳铝业有限公司 均匀充分投料的熔炼炉
CN107297489A (zh) * 2017-05-15 2017-10-27 胡逸琴 一种用于轮毂加工的成型装置
CN107297489B (zh) * 2017-05-15 2019-08-20 山东菏泽振华精密模具有限公司 一种用于轮毂加工的成型装置
CN110107903A (zh) * 2019-04-30 2019-08-09 四川利百川科技有限公司 一种垃圾立式高温热解气化双旋炉
WO2020257834A1 (fr) * 2019-06-24 2020-12-30 Sehrschoen Harald Dispositif et procédé pour la fusion de copeaux
CN110425875B (zh) * 2019-08-12 2020-10-13 张素烨 一种金属冶炼添加剂投料装置
CN110425875A (zh) * 2019-08-12 2019-11-08 张素烨 一种金属冶炼添加剂投料装置
CN112063852A (zh) * 2020-09-14 2020-12-11 湘潭云萃环保技术有限公司 一种含铜污泥中回收贵金属的设备
CN112063852B (zh) * 2020-09-14 2022-07-05 湘潭云萃环保技术有限公司 一种含铜污泥中回收贵金属的设备
WO2022178884A1 (fr) * 2021-02-27 2022-09-01 苏州赛荣建筑装饰工程有限公司 Dispositif d'élimination de métaux lourds dans des déchets en décomposition
CN115823899A (zh) * 2023-01-06 2023-03-21 宁波兴展旺节能科技有限公司 一种浸入式集中熔化炉
CN115823899B (zh) * 2023-01-06 2023-08-04 宁波兴展旺节能科技有限公司 一种浸入式集中熔化炉

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