JP2019026890A - Method for removing oil from copper recycled raw-material and method for recovering copper - Google Patents
Method for removing oil from copper recycled raw-material and method for recovering copper Download PDFInfo
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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
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- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
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- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
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Abstract
Description
本発明は、銅リサイクル原料からの油の除去方法及び銅の回収方法に関する。 The present invention relates to a method for removing oil from a copper recycling raw material and a method for recovering copper.
銅は、銅鉱石から製錬をして銅を得るだけでなく、銅配線、銅、銅合金の切屑、切粉などをリサイクルして銅原料とすることが行われている。また、電気電子部品屑中にも銅が多く含まれるため、電気電子部品屑中から銅を回収することも盛んに行われている。 Copper is not only smelted from copper ore to obtain copper, but also recycles copper wiring, copper, copper alloy chips, swarf, and the like into a copper raw material. In addition, since a large amount of copper is contained in the electrical and electronic component waste, it is also actively performed to collect copper from the electrical and electronic component waste.
しかしながら、銅配線、銅、銅合金の切屑、切粉などには、潤滑油、切削油などが付着していることがあり、付着した油が、銅リサイクルの工程に支障を来す場合がある。 However, lubricating oil, cutting oil, etc. may adhere to copper wiring, copper, copper alloy chips, chips, etc., which may interfere with the copper recycling process. .
特許第５９５０８８１号公報では、油分が付着したダライ粉や故銅等のリサイクル原料を３つの処理炉で加熱して前処理する方法が記載されている。 Japanese Patent No. 5950881 describes a method of pretreatment by heating recycled raw materials such as dairy powder and waste copper to which oil has adhered in three processing furnaces.
しかしながら、銅リサイクル原料に付着した油の種類によっては銅リサイクル原料に付着した油が後工程に影響を及ぼす場合があり、特許文献１に記載された発明に更に改良を加える必要が生じる場合もある。 However, depending on the type of oil adhering to the copper recycling raw material, the oil adhering to the copper recycling raw material may affect the subsequent process, and it may be necessary to further improve the invention described in Patent Document 1. .
上記課題を鑑み、本発明は、銅リサイクル原料に付着する油をその後の銅の回収工程に適した形態で効率良く前処理することが可能な銅リサイクル原料からの油の除去方法及び銅の回収方法を提供する。 In view of the above problems, the present invention provides a method for removing oil from a copper recycling raw material and a copper recovery capable of efficiently pretreating oil adhering to the copper recycling raw material in a form suitable for a subsequent copper recovery step. Provide a method.
上記課題を解決するために本発明者らが検討した結果、銅リサイクル原料を８５０℃以上で加熱して銅リサイクル原料中の油分を加熱分解することが必要であることが分かった。 As a result of investigations by the present inventors in order to solve the above problems, it has been found that it is necessary to heat and decompose the oil content in the copper recycled raw material by heating the copper recycled raw material at 850 ° C. or higher.
以上の知見を基礎として完成した本発明は一側面において、銅リサイクル原料に付着した油を８５０℃以上で加熱して、銅リサイクル原料中の油を加熱分解させることを含む銅リサイクル原料からの油の除去方法である。 The present invention completed on the basis of the above knowledge, in one aspect, heats oil adhering to the copper recycling raw material at 850 ° C. or higher and thermally decomposes the oil in the copper recycling raw material. This is a removal method.
本発明に係る銅リサイクル原料からの油の除去方法は一実施態様において、銅リサイクル原料に付着した油を還元性雰囲気で加熱することを含む。 In one embodiment, the method for removing oil from a copper recycled material according to the present invention includes heating the oil attached to the copper recycled material in a reducing atmosphere.
本発明に係る銅リサイクル原料からの油の除去方法は更に別の一実施態様において、銅リサイクル原料に付着した油を固定床炉で処理することを含む。 In still another embodiment, the method for removing oil from a copper recycled material according to the present invention includes treating oil adhering to the copper recycled material in a fixed bed furnace.
本発明に係る銅リサイクル原料からの油の除去方法は更に別の一実施態様において、銅リサイクル原料に付着した油をロータリーキルン炉で処理することを含む。 In yet another embodiment, the method for removing oil from a copper recycled material according to the present invention includes treating the oil adhering to the copper recycled material in a rotary kiln furnace.
本発明に係る銅リサイクル原料からの油の除去方法は更に別の一実施態様において、銅リサイクル原料に付着した油を８５０℃以上で加熱して、銅リサイクル原料中の油を加熱分解させることが、銅リサイクル原料に付着した油を８５０℃以上で加熱して油を揮発させることと、揮発した油を８５０℃以上で２秒以上再加熱して、ダイオキシンを発生させないように完全燃焼させ、無害化することを含む。 In yet another embodiment of the method for removing oil from a copper recycling raw material according to the present invention, the oil adhering to the copper recycling raw material is heated at 850 ° C. or more to thermally decompose the oil in the copper recycling raw material. The oil attached to the copper recycling raw material is heated at 850 ° C. or more to volatilize the oil, and the volatilized oil is reheated at 850 ° C. or more for 2 seconds or more to completely burn so as not to generate dioxin Including.
本発明は別の一側面において、銅リサイクル原料に付着した油を８５０℃以上で加熱して、銅リサイクル原料中の油を加熱分解させることと、加熱後の銅リサイクル原料を銅製錬炉へ投入して銅を回収することを含む銅の回収方法である。 In another aspect of the present invention, the oil adhering to the copper recycling raw material is heated at 850 ° C. or more to thermally decompose the oil in the copper recycling raw material, and the heated copper recycling raw material is put into a copper smelting furnace. And a copper recovery method including recovering copper.
本発明によれば、銅リサイクル原料に付着する油をその後の銅の回収工程に適した形態で効率良く前処理することが可能な銅リサイクル原料からの油の除去方法及び銅の回収方法が提供できる。 ADVANTAGE OF THE INVENTION According to this invention, the removal method of the oil from the copper recycling raw material which can efficiently pre-process the oil adhering to a copper recycling raw material with the form suitable for the subsequent copper recovery process, and the copper recovery method are provided. it can.
本発明の実施の形態に係る銅リサイクル原料からの油の除去方法に好適な処理設備の一例を図１に示す。図１に示すように、処理設備は、ロータリーキルン１と、固定床炉２と、二次燃焼炉３と、冷却塔４と、バグフィルタ５と、洗浄塔６と、ミストコットレル７と、煙突８とを備える。 An example of processing equipment suitable for the method of removing oil from the copper recycling raw material according to the embodiment of the present invention is shown in FIG. As shown in FIG. 1, the processing equipment includes a rotary kiln 1, a fixed bed furnace 2, a secondary combustion furnace 3, a cooling tower 4, a bag filter 5, a cleaning tower 6, a mist cotrel 7, and a chimney 8. With.
ロータリーキルン１は、円筒状の横置き回転炉１１を備え、ホッパ１２と二次燃焼炉３とに接続されている。ホッパ１２には、固形廃棄物や固形燃料、液状廃棄物等がホッパ１２を介して回転炉１１内に投入されるが、この構成に制限されるものではない。液状廃棄物は二次燃焼炉３へ吹き込み、再生油やＡ重油などの燃料は別ラインでロータリーキルン１や二次燃焼炉３内へ供給されることが可能である。回転炉１１では回転炉１１内に投入された銅リサイクル原料に付着した油が所定の回転数で回転しながら加熱分解処理される。 The rotary kiln 1 includes a cylindrical horizontal rotary furnace 11 and is connected to a hopper 12 and a secondary combustion furnace 3. Solid waste, solid fuel, liquid waste, or the like is put into the rotary furnace 11 through the hopper 12 in the hopper 12, but is not limited to this configuration. Liquid waste can be blown into the secondary combustion furnace 3, and fuels such as reclaimed oil and A heavy oil can be supplied into the rotary kiln 1 and the secondary combustion furnace 3 through separate lines. In the rotary furnace 11, the oil adhering to the copper recycling raw material charged into the rotary furnace 11 is subjected to a thermal decomposition process while rotating at a predetermined rotational speed.
図１の固定床炉２は銅製錬用前処理炉であり、炉内の雰囲気及び温度が制御できるようになっている。固定床炉２の上方には、炉内のガスを排出するためのガス排出口２１を備える。ガス排出口２１は、ロータリーキルン１のガス排出口１３と連結されている。固定床炉２には、銅リサイクル原料として例えば、少なくとも銅系部材と鉄系部材とを選別することにより得られた銅系部材が装入される。 The fixed-bed furnace 2 in FIG. 1 is a copper smelting pretreatment furnace, and the atmosphere and temperature in the furnace can be controlled. A gas discharge port 21 for discharging the gas in the furnace is provided above the fixed bed furnace 2. The gas discharge port 21 is connected to the gas discharge port 13 of the rotary kiln 1. The fixed bed furnace 2 is charged with, for example, a copper-based member obtained by sorting at least a copper-based member and an iron-based member as a copper recycling raw material.
本実施形態においては、例えば銅リサイクル原料として、銅配線、銅、銅合金の切屑、切粉、油分が付着したダライ粉や故銅等のリサイクル原料の他、銅系部材と鉄系部材とを含む原料から銅系部材を選別した後の材料が用いられる。銅系部材としては、例えば、ＰＣＢ含有物を解体し、選別することにより得られた銅系部材を用いてもよい。銅リサイクル原料を固定床炉２へ装入し、ダイオキシン類等の有害物質の発生を極力抑制しながら高温で焼却処理することにより、銅リサイクル原料に付着する油を、その後の銅の回収工程に適した形態で、効率良く前処理することができる。 In the present embodiment, for example, as copper recycling raw materials, copper wiring, copper, copper alloy chips, chips, recycle raw materials such as dairy powder and waste copper with attached oil, copper-based members and iron-based members. The material after selecting the copper-based member from the raw material to be used is used. As the copper-based member, for example, a copper-based member obtained by disassembling and selecting a PCB-containing material may be used. By charging the copper recycling raw material into the fixed-bed furnace 2 and incinerating it at a high temperature while suppressing the generation of harmful substances such as dioxins as much as possible, the oil adhering to the copper recycling raw material is used in the subsequent copper recovery process. Pretreatment can be efficiently performed in a suitable form.
銅リサイクル原料として銅系部材を用いた場合には、焼却処理後に種々の金属を有する原料の中から銅を選別する必要がないため、そのまま銅製錬炉で処理することができる。これにより、銅リサイクル原料から効率良く銅を回収することが可能となる。例えば、トランスなどのＰＣＢ含有物をそのまま焼却する場合に比べ、焼却の対象となる銅系部材の外形も小さいため、焼却処理も短時間で済み、よりエネルギー消費の少ない処理となる。 When a copper-based member is used as the copper recycling raw material, it is not necessary to select copper from the raw materials having various metals after the incineration treatment, so that it can be processed as it is in a copper smelting furnace. Thereby, copper can be efficiently recovered from the copper recycling raw material. For example, in comparison with the case where a PCB-containing material such as a transformer is incinerated as it is, the outer shape of the copper-based member to be incinerated is small.
製錬工程において銅リサイクル原料から銅を回収する場合、銅リサイクル原料に油が付着している場合には、転炉に投入した際に油が燃焼して発煙するなどの安全面、操業面で不具合が生じる。本実施形態によれば、前処理によって予め油を適切に除去することができるため、銅製錬工程において、転炉に銅リサイクル原料を投入した場合であっても安定的に処理を行うことができる。 When recovering copper from copper recycling raw materials in the smelting process, if oil adheres to the copper recycling raw materials, the oil burns and emits smoke when put into the converter. A malfunction occurs. According to this embodiment, oil can be appropriately removed in advance by the pretreatment, and therefore, in the copper smelting process, even when the copper recycling raw material is input to the converter, the treatment can be stably performed. .
固定床炉２へ装入される銅リサイクル原料は、本処理設備が設置された場所とは別の場所で予め解体選別処理してもよいし、固定床炉２へ装入する直前に解体選別処理してもよい。銅リサイクル原料の解体に際して発生する油分を、二次燃焼炉３へ供給して、排ガスの加熱処理の燃料として利用することで、二次燃焼炉３の加熱に必要な燃料を節約することができる。或いは、ロータリーキルン１のホッパ１２から銅リサイクル原料の解体に際して発生する油分を投入することができる。 The copper recycling raw material charged into the fixed-bed furnace 2 may be disassembled and sorted in advance at a place different from the place where the treatment facility is installed, or immediately before being charged into the fixed-bed furnace 2. It may be processed. By supplying the oil component generated when the copper recycling raw material is disassembled to the secondary combustion furnace 3 and using it as a fuel for the heat treatment of the exhaust gas, the fuel necessary for heating the secondary combustion furnace 3 can be saved. . Alternatively, oil generated when the copper recycling raw material is disassembled can be fed from the hopper 12 of the rotary kiln 1.
銅リサイクル原料は、固定床炉２へ装入される前に予め破砕処理することが好ましい。処理対象物のサイズを破砕処理により小さくしておくことで、銅リサイクル原料の焼却処理に要する時間をより短縮化できる。焼却処理後の銅回収工程においても搬送が容易である。銅リサイクル原料中に不純物が混入している場合には、不純物を除去するための選別を更に行うことも好ましい。 The copper recycling raw material is preferably crushed in advance before being charged into the fixed bed furnace 2. By reducing the size of the object to be processed by the crushing process, the time required for the incineration process of the copper recycling raw material can be further shortened. It is easy to transport in the copper recovery process after incineration. When impurities are mixed in the copper recycling raw material, it is also preferable to further select for removing the impurities.
本処理設備が設置された場所とは別の場所で解体選別処理された銅リサイクル原料は、搬送され、固定床炉２へ装入される際に、銅リサイクル原料から油分が出る場合がある。この銅リサイクル原料から出た油分を、例えばウエスなどで拭き取り、使用済みのウエスを二次燃焼炉３やロータリーキルン１或いは固定床炉２の燃料として使用することで、エネルギー消費が少なく、より効率の良い処理を行うことができる。 When the copper recycling raw material that has been dismantled and sorted in a place different from the place where the processing facility is installed is transported and charged into the fixed-bed furnace 2, oil may come out of the copper recycling raw material. By wiping off the oil content from this copper recycling raw material with, for example, waste cloth, and using the used waste as fuel for the secondary combustion furnace 3, the rotary kiln 1 or the fixed bed furnace 2, energy consumption is reduced and more efficient. Good processing can be done.
固定床炉２では、適度な負圧を維持することで炉内温度を８５０℃以上、より典型的には８５０〜９５０℃とすることが好ましい。これにより、固定床炉２内に装入された銅系部材に付着した油分を揮発させることができる。炉内温度が８５０℃より低いと、揮発した油分が分解せず、次工程で問題となる恐れがある。固定床炉２の炉内温度を高くしすぎると、炉内耐火物の損耗が進行する恐れがある。 In the fixed bed furnace 2, it is preferable that the furnace temperature is set to 850 ° C. or higher, more typically 850 to 950 ° C. by maintaining an appropriate negative pressure. Thereby, the oil component adhering to the copper-based member charged in the fixed bed furnace 2 can be volatilized. When the furnace temperature is lower than 850 ° C., the volatilized oil component is not decomposed, which may cause a problem in the next process. If the furnace temperature of the fixed bed furnace 2 is too high, the refractory in the furnace may be worn out.
固定床炉２では、銅系部材の処理時間を２．５時間以内とすることが好ましく、より好ましくは２時間以内である。銅系部材に含まれる油分をより確実に、かつ効率的に処理するための時間を考慮すると、処理時間は、例えば０．５時間以上、より好ましくは１時間以上とすることが好ましい。処理時間は、銅系部材のサイズによって調整することができる。 In the fixed bed furnace 2, the treatment time of the copper-based member is preferably within 2.5 hours, and more preferably within 2 hours. In consideration of the time for more reliably and efficiently treating the oil contained in the copper-based member, the treatment time is preferably 0.5 hours or more, more preferably 1 hour or more, for example. Processing time can be adjusted with the size of a copper-type member.
固定床炉２内の雰囲気は、酸素濃度１〜１５％程度、より好ましくは１〜１０％程度の還元性雰囲気とすることが好ましい。固定床炉２内は圧力空気、またはやや酸素冨化した空気等が装入される。固定床炉２の雰囲気を酸素濃度１〜１５％程度の還元性雰囲気とすることで、銅表面を極度に酸化させることを防止でき、後段の二次燃焼炉３においてより確実に油分を無害化することができるとともに、二次燃焼炉３における処理の加熱負担を軽くすることができる。 The atmosphere in the fixed bed furnace 2 is preferably a reducing atmosphere having an oxygen concentration of about 1 to 15%, more preferably about 1 to 10%. The fixed-bed furnace 2 is charged with pressurized air, air that has been slightly oxygenated, or the like. By making the atmosphere of the fixed-bed furnace 2 a reducing atmosphere with an oxygen concentration of about 1 to 15%, it is possible to prevent the copper surface from being extremely oxidized, and to make the oil content more harmless in the secondary combustion furnace 3 at the subsequent stage. It is possible to reduce the heating burden of the treatment in the secondary combustion furnace 3.
銅リサイクル原料中の油を加熱分解させて得られた加熱物は、灰分が多量に付着しているため、その後の選別が行い難い場合がある。本実施形態によれば、選別により予め銅系部材を濃縮させた材料を銅リサイクル原料として用いることにより、その後に必要に応じて選別作業を行う場合に灰が舞い上がる等の作業環境の悪化を抑制することができる。 A heated product obtained by thermally decomposing oil in a copper recycling raw material has a large amount of ash adhering thereto, so that subsequent sorting may be difficult. According to the present embodiment, by using a material obtained by concentrating a copper-based member in advance by sorting as a copper recycling raw material, it is possible to suppress deterioration of the working environment such as ash soaring when sorting is performed as necessary thereafter. can do.
固定炉２では炉内温度を８５０℃とすることを原則とするが、銅リサイクル原料の中の油の種類によっては、例えば５００〜６００℃程度で油を熱分解させてガス化するような場合もある。この場合は、５００〜６００℃程度で銅リサイクル原料中の油を熱分解させ、後述する二次燃焼炉３で８５０℃以上で２秒以上再加熱することが望ましい。 In the fixed furnace 2, the temperature in the furnace is basically 850 ° C., but depending on the type of oil in the copper recycling raw material, for example, when the oil is thermally decomposed and gasified at about 500 to 600 ° C. There is also. In this case, it is desirable to thermally decompose the oil in the copper recycling raw material at about 500 to 600 ° C. and to reheat at 850 ° C. or higher for 2 seconds or longer in the secondary combustion furnace 3 described later.
二次燃焼炉３は、ロータリーキルン１及び固定床炉２で発生した排ガスを加熱して、排ガス中に含まれるダイオキシン等の有害物質を無害化させるための装置である。二次燃焼炉３は、排ガスを８５０℃以上、より好ましくは９００℃以上、更に好ましくは１０００℃以上に加熱して２秒以上対流させることにより、ダイオキシン等の有害物質を加熱分解することが好ましい。二次燃焼炉３で加熱処理された排ガスは冷却塔４へ供給されて、典型的には１００℃以下に冷却される。そして、冷却された排ガスが、バグフィルタ５を通過して、塵芥物や粒状物等がろ過除去される。バグフィルタ５を通過した排ガスは洗浄塔６へ送られ、ミストコットレル７を介して煙突８から外気へと放出される。バグフィルタ５で回収されたバグダストは、中和設備９１によって中和処理され、フィルタープレスなどの固液分離装置９２で固液分離されて、分離液が排水処理設備９３で処理される。洗浄塔６、ミストコットレル７及び煙突８で発生する排水も排水処理設備９３で処理される。排水処理設備で処理された排水はフィルタープレスなどの固液分離装置９４で固液分離処理される。次に、加熱処理後の銅系部材を必要に応じて粉砕し、転炉へ装入して、銅系部材に含まれる銅を回収する。 The secondary combustion furnace 3 is an apparatus for heating the exhaust gas generated in the rotary kiln 1 and the fixed bed furnace 2 and detoxifying harmful substances such as dioxin contained in the exhaust gas. The secondary combustion furnace 3 preferably heats and decomposes harmful substances such as dioxins by heating the exhaust gas to 850 ° C. or higher, more preferably 900 ° C. or higher, more preferably 1000 ° C. or higher and causing convection for 2 seconds or longer. . The exhaust gas heat-treated in the secondary combustion furnace 3 is supplied to the cooling tower 4 and is typically cooled to 100 ° C. or lower. Then, the cooled exhaust gas passes through the bag filter 5 to remove dust, particulates, and the like by filtration. The exhaust gas that has passed through the bag filter 5 is sent to the cleaning tower 6 and is discharged from the chimney 8 to the outside air via the mist cot rel 7. The bag dust collected by the bag filter 5 is neutralized by the neutralization equipment 91, solid-liquid separated by a solid-liquid separation device 92 such as a filter press, and the separated liquid is processed by the waste water treatment equipment 93. Waste water generated in the cleaning tower 6, the mist cot rel 7 and the chimney 8 is also treated by the waste water treatment equipment 93. The wastewater treated by the wastewater treatment facility is subjected to solid-liquid separation processing by a solid-liquid separation device 94 such as a filter press. Next, the copper-based member after the heat treatment is pulverized as necessary and charged into the converter to recover the copper contained in the copper-based member.
本発明の実施の形態に係る銅リサイクル原料からの油の除去方法によれば、銅リサイクル原料に付着する油を、その後の銅の回収工程に適した形態で、効率良く前処理することが可能となる。 According to the method for removing oil from the copper recycling raw material according to the embodiment of the present invention, the oil adhering to the copper recycling raw material can be efficiently pretreated in a form suitable for the subsequent copper recovery process. It becomes.
更に本発明の実施の形態によれば、銅リサイクル原料として、トランスなどのＰＣＢ含有物を解体し、銅成分の多い部材（銅系部材）を利用することにより、銅の回収効率を向上させることができる。また、銅回収に際し、トランスなどのＰＣＢ含有物を単体でそのまま焼却した後、選別する場合に比べ、リサイクルのためのより高濃度の銅原料を得ることができる。 Furthermore, according to the embodiment of the present invention, as a copper recycling raw material, a PCB-containing material such as a transformer is disassembled, and a copper-rich member (copper-based member) is used to improve copper recovery efficiency. Can do. In addition, when collecting copper, it is possible to obtain a higher-concentration copper raw material for recycling as compared with a case where a PCB-containing material such as a transformer is incinerated as it is and then sorted.
なお、上述においては、油が付着した銅リサイクル原料を固定床炉２で処理する例を示したが、ロータリーキルン１内に油が付着した銅リサイクル原料を投入して処理することもできる。その場合は、ロータリーキルン１の炉内温度を８５０℃以上とすべきであることは勿論である。 In the above description, the example in which the copper recycling raw material to which oil is attached is treated in the fixed bed furnace 2 is described. However, the copper recycling raw material to which oil is attached can be put into the rotary kiln 1 for processing. In that case, of course, the furnace temperature of the rotary kiln 1 should be 850 ° C. or higher.
１…ロータリーキルン
２…固定床炉
３…二次燃焼炉
４…冷却塔
５…バグフィルタ
７…ミストコットレル
８…煙突
１１…回転炉
１２…ホッパ
１３…ガス排出口
２１…ガス排出口
９１…中和設備
９２…固液分離装置
９３…排水処理設備
９４…固液分離装置
DESCRIPTION OF SYMBOLS 1 ... Rotary kiln 2 ... Fixed bed furnace 3 ... Secondary combustion furnace 4 ... Cooling tower 5 ... Bag filter 7 ... Mistcottrell 8 ... Chimney 11 ... Rotary furnace 12 ... Hopper 13 ... Gas exhaust port 21 ... Gas exhaust port 91 ... Neutralization Equipment 92 ... Solid-liquid separator 93 ... Waste water treatment equipment 94 ... Solid-liquid separator
Claims (6)
銅リサイクル原料に付着した油を８５０℃以上で加熱して前記油を揮発させることと、
揮発した油を８５０℃以上で２秒以上再加熱して、ダイオキシンを発生させないように完全燃焼させ、無害化することを含む請求項１〜４のいずれか１項に記載の銅リサイクル原料からの油の除去方法。 Heating the oil adhering to the copper recycling raw material at 850 ° C. or higher to thermally decompose the oil in the copper recycling raw material;
Heating the oil adhering to the copper recycling raw material at 850 ° C. or higher to volatilize the oil;
It reheats at 850 degreeC or more for 2 seconds or more, volatilized oil completely burns so that a dioxin may not be generated, and detoxifies it. Oil removal method.
加熱後の前記銅リサイクル原料を銅製錬炉へ投入して銅を回収すること
を含む銅の回収方法。 Heating the oil adhering to the copper recycling raw material at 850 ° C. or more to thermally decompose the oil in the copper recycling raw material;
A method for recovering copper, comprising: introducing the copper recycling raw material after heating into a copper smelting furnace and recovering copper.
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Citations (3)
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| JP2012106182A (en) * | 2010-11-17 | 2012-06-07 | Kowa Seiko Kk | Method for treating pcb inclusion |
| JP2014196550A (en) * | 2013-03-29 | 2014-10-16 | パンパシフィック・カッパー株式会社 | Method of charging recycle raw material into converter furnace |
| JP2018171280A (en) * | 2017-03-31 | 2018-11-08 | Ｊｘ金属株式会社 | Method for treating pcb-containing material |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2012106182A (en) * | 2010-11-17 | 2012-06-07 | Kowa Seiko Kk | Method for treating pcb inclusion |
| JP2014196550A (en) * | 2013-03-29 | 2014-10-16 | パンパシフィック・カッパー株式会社 | Method of charging recycle raw material into converter furnace |
| JP2018171280A (en) * | 2017-03-31 | 2018-11-08 | Ｊｘ金属株式会社 | Method for treating pcb-containing material |
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