WO2015050208A1 - 非鉄金属溶解炉及び非鉄金属溶解方法 - Google Patents
非鉄金属溶解炉及び非鉄金属溶解方法 Download PDFInfo
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- WO2015050208A1 WO2015050208A1 PCT/JP2014/076411 JP2014076411W WO2015050208A1 WO 2015050208 A1 WO2015050208 A1 WO 2015050208A1 JP 2014076411 W JP2014076411 W JP 2014076411W WO 2015050208 A1 WO2015050208 A1 WO 2015050208A1
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- ferrous metal
- molten metal
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- metal melting
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- 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
- C22B21/00—Obtaining aluminium
- C22B21/0084—Obtaining aluminium melting and handling molten aluminium
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- 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
- C22B21/00—Obtaining aluminium
- C22B21/0084—Obtaining aluminium melting and handling molten aluminium
- C22B21/0092—Remelting scrap, skimmings or any secondary source aluminium
-
- 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
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- 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
- F27B3/00—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces
- F27B3/04—Hearth-type furnaces, e.g. of reverberatory type; Tank furnaces of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces
- F27B3/045—Multiple chambers, e.g. one of which is used for charging
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- 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
- F27D27/00—Stirring devices for molten material
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- 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
- F27D27/00—Stirring devices for molten material
- F27D27/005—Pumps
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- 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
- F27D3/0025—Charging or loading melting furnaces with material in the solid state
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- 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
-
- 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
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/0001—Heating elements or systems
- F27D99/0033—Heating elements or systems using burners
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- 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
- F27D99/00—Subject matter not provided for in other groups of this subclass
- F27D99/007—Partitions
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- 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 non-ferrous metal melting furnace and a non-ferrous metal melting method for melting a non-ferrous metal such as an aluminum alloy to be used for manufacturing various cast products.
- non-ferrous metal melting furnace for melting a non-ferrous metal such as an aluminum alloy to be used for manufacturing various cast products, for example, as shown in FIG. While circulating between the vortex chambers 23, the molten metal 10 is heated by the radiant flame F of the burner 25 provided in the temperature raising chamber 22, and the nonferrous metal is introduced into the vortex chamber 23 from the inlet of the charging chute 27. What is dissolved is known (for example, refer to Patent Document 1). Note that the molten metal 10 can be heated using an electric heater instead of the burner 25.
- the briquette material contains oil and moisture. Therefore, there is a risk of causing a steam explosion if the briquette material is completely immersed and melted in the molten aluminum. Therefore, when the briquette material is melted by heating directly with a flame of a burner in a reflection furnace or the like, the briquette material is dispersed in the melting process to become a chip, and is directly heated and melted in a state where the surface area is large. There is a problem that the oxidation is promoted and the yield becomes very bad.
- FIG. 7 there is a method in which the aluminum chips supplied from the storage hopper are dried in a state of the chips through a large drying device 29 such as a kiln dryer, but the oil content as a lubricant during compression molding is also available. Since it is also dried at the same time, it is extremely difficult to briquette the dried aluminum chips. Even if the briquette can be made, a large drying device 29 is required, so that the installation and maintenance of the briquette requires considerable costs.
- a large drying device 29 such as a kiln dryer
- an object of the present invention is to provide a non-ferrous metal melting furnace and a non-ferrous metal melting method that can be safely and efficiently dissolved, for example, even in the case of a massive non-ferrous metal material containing oil and moisture. .
- a non-ferrous metal melting furnace includes a heating chamber (32) for heating and maintaining a temperature of a molten metal (10), and the heating chamber (32).
- a vortex chamber (33) is provided that communicates and immerses and melts the charged nonferrous metal material by vortex, and the circulating pump (21) is used to transfer the molten metal (10) of the temperature raising chamber (32) to the vortex chamber ( 33) a non-ferrous metal melting furnace (30) configured to return the molten metal (10) supplied to and discharged from the vortex chamber (33) to the heating chamber (32),
- the vortex chamber (33) An outer peripheral wall (331) which is installed in a state in which a flow path (34) to which the molten metal (10) is supplied from the temperature raising chamber (32) side is secured and a space (330) is formed inside;
- a container (332) disposed at the inner center of the outer peripheral wall (331), the upper part being open and the lower part having a substantially inverted conical shape by a
- Consisting of a weir (334)
- the intrusion direction of the flow path (34) is communicated directly to the shallow portion (333) at a position shifted in the horizontal direction from the central axis (X) direction extending in the vertical direction of the container (332), and the molten metal (10) circulates in the shallow part (333), and part of it passes over the weir part (334) and enters the container (332) to form a vortex.
- the invention according to claim 2 is characterized in that the flow path (34) is communicated in a tangential direction of the shallow portion (333).
- the nonferrous metal melting method according to claim 3 is a nonferrous metal melting method using the nonferrous metal melting furnace (30) according to claim 1 or 2, As the non-ferrous metal material, an undried massive non-ferrous metal material having a size that is not completely immersed in the shallow portion (333) through which the molten metal (10) circulates is used.
- the massive non-ferrous metal material is an aluminum briquette material (M) obtained by compressing and solidifying aluminum chips, and the molten metal (10) is a molten aluminum. It is characterized by.
- the distance (T) from the bottom of the shallow portion (333) to the upper surface of the molten metal (10) is smaller than the height (S) of the briquette material (M).
- the circulation pump (21) is controlled.
- the annular shallow shallow portion is a weir portion so as to surround the outer periphery of the mortar-shaped container in the vortex chamber, that is, the upper part is opened and the lower part is formed in a substantially inverted conical shape by the tapered wall. Since the molten metal circulates in the shallow part and part of the molten metal enters the container beyond the weir part and forms a vortex, a non-ferrous metal material such as an aluminum alloy is formed, for example, When introduced into the shallow water channel or the flow path to which the molten metal is supplied, the non-ferrous metal material is melted while circling the shallow water region, and is fed into the container over the weir and stirred.
- an undried massive non-ferrous metal material such as an aluminum briquette material that has been compressed and solidified from aluminum chips is exposed from the molten metal, that is, a massive mass that is not completely immersed in the shallow water.
- the non-ferrous metal material is gradually melted by the molten metal circulating in the shallow part and the volume is reduced.
- the massive non-ferrous metal material becomes small pieces and powder of non-ferrous metal and is melted while being sent into the container over the weir part together with the molten metal.
- the massive non-ferrous metal material since it is not necessary to dry the bulk nonferrous metal material before it is added, no extra cost or labor is required, and the yield is not deteriorated.
- the massive non-ferrous metal material for example, it may be introduced into a shallow portion or a flow path in the state of chips like aluminum chips and fed into the container while circulating. It is also possible to put a chip in the state of chips directly into the container from above the container.
- the non-ferrous metal melting furnace of the present invention since the flow path of the molten metal supplied to the shallow section is communicated in the tangential direction of the shallow section, the molten metal is circulated at a large flow rate in the shallow section. Therefore, the nonferrous metal can be efficiently dissolved and circulated in the shallow portion.
- Non-dried massive non-ferrous metal material that does not completely immerse in the shallow part where the molten metal circulates, for example, aluminum briquette material that is solidified by compressing aluminum chips, for example, the shallow part or molten metal
- the oil and water are dried using the heat of the molten metal directly into the supply channel, and gradually melted down to reduce the volume.
- annular shallow portion is provided across the weir portion so as to surround the outer periphery of the container whose upper portion is open and whose lower portion is substantially inverted conical by a tapered wall. What efficiently dissolved is not described in the above-mentioned patent document.
- FIG. 3 is a sectional view taken along line AA in FIG. 2.
- FIG. 3 is a sectional view taken along line BB in FIG.
- FIG. 3 is a cross-sectional view when the position of the inlet is changed in the vortex chamber shown in FIG.
- FIG. 3 is a schematic plan view which shows the nonferrous metal melting furnace which concerns on a prior art example.
- This non-ferrous metal melting furnace 30 is a melting that can be immersed and melted by directly putting in a non-dried lump-like non-ferrous metal material such as an aluminum briquette material M obtained by compressing and solidifying aluminum chips.
- This is a furnace and is connected to the temperature raising chamber 32 for heating and keeping the temperature of the molten metal 10 circulated by using the circulation pump 31, and the temperature rising chamber 32, and the charged briquette material M is immersed and melted by vortex.
- the vortex chamber 33 is provided.
- a burner 35 using fossil fuel such as petroleum is attached to the temperature raising chamber 32, and the molten aluminum 10 is heated by the radiant flame F of the burner 35.
- an electric heater may be immersed in the molten aluminum 10 to directly heat the molten metal 10.
- the molten metal 10 heated in the temperature raising chamber 32 is raised to the level of the molten metal 10 by the circulation pump 31 and supplied to the vortex chamber 33. Then, the briquette material M charged from the charging chute 37 is melted in the vortex chamber 33. Further, the molten metal 10 discharged from the vortex chamber 33 is returned to the temperature raising chamber 32, and thus the molten metal 10 is circulated in the non-ferrous metal melting furnace 30.
- the vortex chamber 33 stands up on the outer peripheral wall 331 that surrounds the whole, the container 332 formed inside thereof, the shallow portion 333 provided so as to surround the outer periphery of the container 332, and the outer periphery of the upper surface of the container 332.
- the dam portion 334 is provided.
- the outer peripheral wall 331 has a cylindrical shape in which a hollow cylindrical space 330 is formed on the inner side, and the flow path 34 is provided so as to secure the flow path 34 through which the molten metal 10 is supplied inward from the temperature raising chamber 32 side. It is installed avoiding.
- a hole is formed in the outer peripheral wall 331 to form the flow path 34, but any mode may be used as long as the flow path 34 is secured.
- the outer shape of the outer peripheral wall 331 is substantially rectangular, but it may be any shape.
- the inner shape may be any shape as long as the container 332 and the shallow portion 333 can be provided inward, but in a circular shape as in the present embodiment.
- the space 330 can be formed into a hollow substantially columnar shape such as a hexagonal column shape or an octagonal column shape, and the inner shape can be formed into a substantially circular shape.
- the container 332 is a mortar shape that is open at the top and has a substantially inverted conical shape at the bottom, and is disposed at an inner center position with respect to the outer peripheral wall 331.
- the depth of the container used here is 300 mm. Then, the molten metal 10 is dropped in an oblique direction from above so that a vortex is generated. In addition, you may make it easy to generate a vortex
- the shallow portion 333 is annularly provided between the outer peripheral wall 331 so as to surround the outer periphery of the container 332, and is partitioned from the container 332 by a dam portion 334 provided so as to stand on the outer periphery of the upper surface of the container 332.
- the dam portion 334 is provided in a strip shape lower than the outer peripheral wall 331.
- the upper surface of the dam portion 334 is made higher than the position of the bottom of the shallow portion 333.
- the depth D of the shallow portion 333 that is, the distance D between the bottom of the shallow portion 333 and the upper surface of the dam portion 334 is set to 30 mm.
- the weir portion 334 can be arbitrarily designed depending on the height S of the briquette material M.
- the shallow portion 333 is directed to the charging port of the charging chute 37 into which the briquette material M is directly input.
- the flow path 34 guided from the temperature raising chamber 32 side to the inside of the outer peripheral wall 331 is directly connected to the shallow portion 333.
- the entrance direction of the flow path 34 is communicated in a tangential direction with respect to a position shifted in the horizontal direction from the central axis X direction extending in the vertical direction of the container 332, here, the annular shallow portion 333.
- the molten metal 10 supplied from the temperature raising chamber 32 side through the flow path 34 by the function of the circulation pump 31 circulates in the shallow portion 333 and part of the molten metal 10 enters the container 332 beyond the dam portion 334. Is formed.
- the depth of the vortex is about 120 to 200 mm.
- the molten metal 10 is circulated from the flow path 34 through the shallow portion 333 and a part of the molten metal 10 exceeds the weir portion 334, and between the upper surface of the molten metal 10 in the shallow portion 333 and the bottom of the shallow portion 333.
- the distance T is set to 50 mm, which is lower than the height S (usually 80 mm) of the briquette material M to be input. The distance T can be changed by the actual height S of the briquette material M.
- the circulation pump 31 changes the output via the control unit according to the amount of the molten metal 10 held in the temperature raising chamber 32, thereby making the distance T between the upper surface of the molten metal 10 and the bottom of the shallow portion 333 constant in the shallow portion 333. In addition, it is controlled so as to be smaller than the height S of the briquette material M.
- a return port 335 for returning the molten metal 10 to the circulating pump 31 side is provided as shown in FIG.
- the undried briquette material M is sized so as not to be completely immersed in the shallow portion 333 in which the molten metal 10 circulates. Is charged directly from the charging chute 37.
- the briquette material M is placed in a state where a part of the briquette material M is exposed from the shallow portion 333, but the portion immersed in the molten metal 10 is dissolved by the circulating molten metal 10, so that the volume of the briquette material M gradually decreases.
- the water vapor including oil
- the briquette material M is not likely to explode with water vapor.
- the released water vapor (including oil) is burned and harmless by the burner 36 (installed on the outer peripheral wall 331 at the upper part of the space 330 by a burner different from the burner 35 provided in the heating chamber 32).
- the air is exhausted from the upper part of the space 330.
- the briquette material M becomes a small piece and powder of aluminum and is dropped into the container 332 over the weir portion 334 while circling the shallow portion 333 together with the molten metal 10 and is immersed and melted by vortex.
- the aluminum briquette material M which is formed by compressing and solidifying the aluminum chips, is introduced into the melting furnace 30, but the size is such that a part of the aluminum briquette M is exposed from the molten metal 10 when it is introduced into the shallow portion 333.
- Any other non-ferrous metal material may be used.
- the massive non-ferrous metal material not only the massive non-ferrous metal material but also, for example, it may be put into the shallow portion 333 in the state of chips like aluminum chips and fed into the container 332 while circling.
- the briquette material M is directly input to the shallow portion 333, but may be directly input to the flow path 34 to which the molten metal is supplied. Further, as indicated by a dotted line in FIG. 5, an input port of the input chute 37 can be provided on the container 332, and a chip-shaped one can be directly input from the container 332 into the container 332.
- the non-ferrous metal melting furnace 30 including at least the temperature raising chamber 32 and the vortex chamber 33 has been described as an example.
- a hot water discharge chamber, a removal chamber, a sedation chamber, and the like may be provided. .
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Abstract
Description
そこで、ブリケット材を反射炉等で直接バーナの火炎によって加熱することで溶解した場合、溶解の過程でブリケット材が分散して切粉の状態となり、表面積が多い状態で直接加熱溶解されるため、酸化が促進され歩留りが非常に悪くなるといった問題がある。
なお、仮にブリケットにすることができたとしても大型の乾燥装置29を必要とするためその設置や保守には相当の費用がかかる。
前記渦室(33)は、
前記昇温室(32)側から溶湯(10)が供給される流路(34)を確保した状態で設置されるとともに内方には空間(330)が形成されてなる外周壁(331)と、
前記外周壁(331)の内方中央に配置され、上方が開放し下方はテーパー壁によって略逆円錐状にされた容器(332)と、
該容器(332)と前記外周壁(331)との間に、該容器(332)の外周を取り囲むように環状に設けられた浅瀬部(333)と、
前記容器(332)と前記浅瀬部(333)との間を仕切ると共に上面が前記浅瀬部(333)の底の位置よりも高くなるよう前記容器(332)の上面外周に起立するように設けられた堰部(334)からなり、
前記流路(34)の進入方向を、前記容器(332)の上下方向に延びる中心軸(X)方向から水平方向にズラした位置でかつ前記浅瀬部(333)に直接連通させて、前記溶湯(10)が前記浅瀬部(333)を循環するとともにその一部が前記堰部(334)を越えて前記容器(332)内に入り込み渦流が形成されるようにしたことを特徴とする。
前記非鉄金属材として前記溶湯(10)が循環する前記浅瀬部(333)に対して完全に浸漬しない大きさで未乾燥の塊状非鉄金属材を用いることを特徴とする。
よって、例えば、アルミ切粉を圧縮して固形化したアルミのブリケット材のような未乾燥の塊状非鉄金属材を溶湯から露出するように、つまり浅瀬部において完全に浸漬しない程度の大きさの塊状非鉄金属材は、浅瀬部を循環する溶湯によって徐々に溶解して体積が小さくなる。このとき、溶湯から露出した塊状非鉄金属材の部分からは水蒸気が放出されるので塊状非鉄金属材が水蒸気爆発する恐れはない。そして、塊状非鉄金属材は非鉄金属の小片及び粉となり溶湯とともに堰部を越えて容器内に送られつつ溶解される。
なお、塊状非鉄金属材だけでなく、例えば、アルミ切粉のように切粉の状態で浅瀬部や流路に投入し周回しつつ容器に送り込むようにしてもよい。また、切粉の状態のものを容器上から直接容器内に投入させることもできる。
これによれば、特に大がかりな装置を必要とするものではなく容器の外周に環状の浅瀬部を設けるようにするだけで安全性が高まり効率的に未乾燥の塊状非鉄金属材を連続して溶解することができる。
この非鉄金属溶解炉30は、アルミ切粉を圧縮して固形化したアルミのブリケット材Mのような塊状非鉄金属材であってしかも未乾燥のものを直接投入して浸漬溶解することのできる溶解炉であり、循環ポンプ31を利用することで循環させられる溶湯10を加熱し昇温及び保温する昇温室32と、昇温室32に連通されるとともに、投入されたブリケット材Mを渦流によって浸漬溶解する渦室33を備えている。
なお、バーナ35にかえて電気ヒーターをアルミニウムの溶湯10中に浸漬して溶湯10を直接加熱するようにしてもよい。
これにより、循環ポンプ31のはたらきによって流路34を介して昇温室32側から供給された溶湯10は、浅瀬部333を循環するとともにその一部が堰部334を越えて容器332内に入り込み渦流が形成される。渦流の深さは120~200mm程度である。
このとき、流路34からは浅瀬部333を循環するとともにその一部が堰部334を越える程度の量の溶湯10が供給され、浅瀬部333における溶湯10の上面と浅瀬部333の底間の距離Tは、投入されるブリケット材Mの高さS(通常80mm)よりも低い50mmに設定されている。なお、実際のブリケット材Mの高さSにより距離Tは変更できる。
ブリケット材Mは浅瀬部333からその一部が露出した状態でおかれるが溶湯10に浸漬した部分は循環する溶湯10によって溶解するためブリケット材Mはその体積が徐々に小さくなる。このとき、溶湯10から露出したブリケット材Mの部分からは水蒸気(油分を含む)が放出されるのでブリケット材Mが水蒸気爆発する恐れはない。なお、放出された水蒸気(油分を含む)はバーナ36(昇温室32に設けられたバーナ35とは別のバーナで空間330の上部で外周壁331に設置されている)によって燃焼され無害の状態で空間330の上部から外に排気される。
その後、ブリケット材Mはアルミの小片及び粉となり溶湯10とともに浅瀬部333を周回しつつ堰部334を越えて容器332内に落下させられ渦流によって浸漬溶解される。
また、本実施形態ではアルミ切粉を圧縮して固形化したアルミのブリケット材Mを溶解炉30に投入したが、浅瀬部333に投入した際に一部が溶湯10から露出する大きさのものであればその他の塊状非鉄金属材であってもよい。
また塊状非鉄金属材だけでなく、例えば、アルミ切粉のように切粉の状態で浅瀬部333に投入し周回しつつ容器332に送り込むようにしてもよい。
また、本実施形態では浅瀬部333に対してブリケット材Mを直接投入するようにしたが、溶湯が供給される流路34に対して直接投入するようにしてもよい。
さらに、図5に点線で示したように、投入シュート37の投入口を容器332上に設け、切粉の状態のものを容器332上から直接容器332内に投入させることもできる。
20 非鉄金属溶解炉
21 循環ポンプ
22 昇温室
23 渦室
25 バーナ
27 投入シュート
29 乾燥装置
30 非鉄金属溶解炉
31 循環ポンプ
32 昇温室
33 渦室
34 流路
35 バーナ
36 バーナ
37 投入シュート
330 空間
331 外周壁
332 容器
333 浅瀬部
334 堰部
335 戻し口
D 浅瀬部の底と堰部の上面間の距離
F 火炎
M ブリケット材(塊状非鉄金属材)
S ブリケット材の高さ
T 浅瀬部における溶湯の上面と浅瀬部の底間の距離
X 中心軸
Claims (5)
- 溶湯を加熱し昇温及び保温する昇温室と、前記昇温室に連通されるとともに、投入された非鉄金属材を渦流によって浸漬溶解する渦室を備え、循環ポンプを利用して前記昇温室の溶湯を前記渦室に供給し前記渦室から排出された溶湯を前記昇温室に戻すようにした非鉄金属溶解炉であって、
前記渦室は、
前記昇温室側から溶湯が供給される流路を確保した状態で設置されるとともに内方には空間が形成されてなる外周壁と、
前記外周壁の内方中央に配置され、上方が開放し下方はテーパー壁によって略逆円錐状にされた容器と、
該容器と前記外周壁との間に、該容器の外周を取り囲むように環状に設けられた浅瀬部と、
前記容器と前記浅瀬部との間を仕切ると共に上面が前記浅瀬部の底の位置よりも高くなるよう前記容器の上面外周に起立するように設けられた堰部からなり、
前記流路の進入方向を、前記容器の上下方向に延びる中心軸方向から水平方向にズラした位置でかつ前記浅瀬部に直接連通させて、前記溶湯が前記浅瀬部を循環するとともにその一部が前記堰部を越えて前記容器内に入り込み渦流が形成されるようにしたことを特徴とする非鉄金属溶解炉。 - 前記流路は、前記浅瀬部の接線方向に連通されてなることを特徴とする請求項1に記載の非鉄金属溶解炉。
- 前記請求項1又は2に記載の非鉄金属溶解炉を利用した非鉄金属溶解方法であって、
前記非鉄金属材として前記溶湯が循環する前記浅瀬部に対して完全に浸漬しない大きさで未乾燥の塊状非鉄金属材を用いることを特徴とする非鉄金属溶解方法。 - 前記塊状非鉄金属材は、アルミ切粉を圧縮して固形化したアルミのブリケット材であり、前記溶湯はアルミの溶湯であることを特徴とする請求項3に記載の非鉄金属溶解方法。
- 前記ブリケット材の高さよりも前記浅瀬部の底から溶湯上面までの距離が小さくなるように前記循環ポンプを制御することを特徴とする請求項4に記載の非鉄金属溶解方法。
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JP2015540545A JP6085685B2 (ja) | 2013-10-04 | 2014-10-02 | 非鉄金属溶解炉及び非鉄金属溶解方法 |
US15/084,551 US10138532B2 (en) | 2013-10-04 | 2016-03-30 | Nonferrous metal melting furnace and method for melting nonferrous metal |
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KR20190038943A (ko) * | 2016-08-29 | 2019-04-09 | 파이로텍, 인크. | 스크랩 침지 장치 |
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US10138532B2 (en) | 2018-11-27 |
JPWO2015050208A1 (ja) | 2017-03-09 |
CN105593388A (zh) | 2016-05-18 |
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