JP6938414B2 - How to dispose of parts waste - Google Patents

How to dispose of parts waste Download PDF

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JP6938414B2
JP6938414B2 JP2018063005A JP2018063005A JP6938414B2 JP 6938414 B2 JP6938414 B2 JP 6938414B2 JP 2018063005 A JP2018063005 A JP 2018063005A JP 2018063005 A JP2018063005 A JP 2018063005A JP 6938414 B2 JP6938414 B2 JP 6938414B2
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直樹 樋口
直樹 樋口
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JX Nippon Mining and Metals Corp
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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
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/20—Waste processing or separation
    • 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
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]

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Description

本発明は、部品屑の処理方法に関し、特に、使用済み電子・電気機器部品屑、具体的には電線屑のリサイクル処理に好適な部品屑の処理方法に関する。 The present invention relates to a method for treating parts scraps, and more particularly to a method for treating used electronic / electrical equipment parts scraps, specifically, parts scraps suitable for recycling electric wire scraps.

近年、資源保護の観点から、廃家電製品・ＰＣや携帯電話等の電子・電気機器部品屑から、有価金属を回収することがますます盛んになってきており、その効率的な回収方法が検討され、提案されている。 In recent years, from the viewpoint of resource protection, it has become more and more popular to recover valuable metals from waste home appliances, electronic / electrical equipment parts scraps such as PCs and mobile phones, and an efficient recovery method is being investigated. Has been proposed.

例えば、特開平９−７８１５１号公報（特許文献１）では、有価金属を含有するスクラップ類を銅鉱石溶錬用自溶炉へ装入し、有価金属を炉内に滞留するマットへ回収させる工程を含む有価金属のリサイクル方法が記載されている。このようなリサイクル方法によれば、銅溶錬自溶炉での銅製錬にスクラップ処理を組み合わせることができるため、有価金属含有率が低いスクラップ類からでも低コストで有価金属を回収することができる。 For example, in Japanese Patent Application Laid-Open No. 9-78151 (Patent Document 1), a step of charging scraps containing valuable metals into a flash smelting furnace for copper ore smelting and collecting the valuable metals in a mat staying in the furnace. The method of recycling valuable metals including is described. According to such a recycling method, since scrap processing can be combined with copper smelting in a copper smelting flash smelting furnace, valuable metals can be recovered at low cost even from scraps having a low valuable metal content. ..

しかしながら、特許文献１に記載されるような銅溶錬自溶炉を用いた処理においては、電子・電気機器部品屑の処理量が増えことにより、銅溶錬自溶炉でトラブルが発生することが懸念されている。 However, in the treatment using the copper smelting flash smelting furnace as described in Patent Document 1, troubles may occur in the copper smelting flash smelting furnace due to the increase in the amount of waste of electronic / electrical equipment parts. Is a concern.

銅溶錬自溶炉の過還元によるトラブルを発生する手法の一つとして、電子・電気機器部品屑を銅溶錬自溶炉で処理する前に電子・電気機器部品屑を粉砕処理し、容量を小さくすることが提案されている。例えば、特開２０１５−１２３４１８号公報（特許文献２）では、銅を含む電気・電子機器部品屑を焼却後、所定のサイズ以下に粉砕し、粉砕した電気・電子機器部品屑を銅の溶錬炉で処理することが記載されている。 As one of the methods to cause troubles due to over-reduction of copper smelting flash smelting furnace, electronic / electrical equipment parts scraps are crushed and capacity before being processed in the copper smelting flash smelting furnace. Is proposed to be smaller. For example, in Japanese Patent Application Laid-Open No. 2015-123418 (Patent Document 2), electrical / electronic equipment component scraps containing copper are incinerated, crushed to a predetermined size or less, and the crushed electrical / electronic equipment component scraps are smelted with copper. It is described that it is processed in a furnace.

しかしながら、電子・電気機器部品屑の処理量が増加することにより、電子・電気機器部品屑に含まれる物質の種類によっては、その後の銅製錬工程での処理に好ましくない物質（製錬阻害物質）が従来よりも多量に投入されることとなる。このような銅製錬工程に装入される製錬阻害物質の量が多くなると、電子・電気機器部品屑の投入量を制限せざるを得なくなる状況が生じる。 However, due to the increase in the amount of electronic / electrical equipment parts waste processed, depending on the type of material contained in the electronic / electrical equipment parts waste, substances unfavorable for processing in the subsequent copper smelting process (smelting inhibitor). Will be input in a larger amount than before. If the amount of smelting inhibitor charged into such a copper smelting process increases, there will be a situation in which the amount of waste of electronic / electrical equipment parts must be limited.

例えば、電子・電気機器部品屑中に含まれる電線屑には、アンチモン（Ｓｂ）を含有する被覆銅線が含まれているが、銅製錬工程にこのようなＳｂを含む物質が多量に混入すると銅製錬における製品である電気銅の品質規格に影響を与えるおそれがある。このような電線屑を製錬工程に送る前に前処理において除去し、銅製錬で回収可能な有価金属を濃縮することができれば、銅製錬工程での部品屑処理をより効率良く進めることができる点で有望である。 For example, electric wire scraps contained in electronic / electrical equipment parts scraps contain coated copper wires containing antimony (Sb), but if a large amount of such substances containing Sb are mixed in the copper smelting process. It may affect the quality standard of electrolytic copper, which is a product in copper smelting. If such electric wire scraps can be removed in the pretreatment before being sent to the smelting process and the valuable metal recoverable in the copper smelting can be concentrated, the parts scrap treatment in the copper smelting process can proceed more efficiently. Promising in terms of points.

例えば、特開２０１３−２２５２２号公報には、電線屑の回収装置の例が記載されている。具体的には、傾斜した選別台上にシャワー装置から水を流すとともに、選別台に斜め上方に向かう振動を与え、粉砕した電線くずを選別台上へ投入することにより、粉砕物中に含まれる銅材等を選別台上の上方に移動させて回収し、粉砕物に含まれる樹脂くずを選別台上の下方部分に移動させて分離する装置が記載されている。 For example, Japanese Patent Application Laid-Open No. 2013-22522 describes an example of a device for collecting electric wire scraps. Specifically, it is contained in the crushed material by flowing water from the shower device on the inclined sorting table, giving the sorting table an obliquely upward vibration, and throwing the crushed electric wire waste onto the sorting table. Described is an apparatus for moving a copper material or the like upward on a sorting table to collect it, and moving resin waste contained in the crushed material to a lower portion on the sorting table for separation.

しかしながら、特許文献３に記載されるような回収装置は、電線屑を一度粉砕し、粉砕した後の材料を湿式処理するための従来の装置が記載されるだけであって、電子・電気機器部品屑のような種々の部品を含む原料を処理することについては記載されていない。 However, as the recovery device as described in Patent Document 3, only a conventional device for crushing electric wire waste once and wet-treating the material after crushing is described, and electronic / electrical equipment parts. There is no mention of processing raw materials containing various parts such as scraps.

特開平９−７８１５１号公報Japanese Unexamined Patent Publication No. 9-78151 特開２０１５−１２３４１８号公報Japanese Unexamined Patent Publication No. 2015-123418 特開２０１３−２２５２２号公報Japanese Unexamined Patent Publication No. 2013-22522

上記課題を鑑み、本発明は、電線屑を含む電子・電気機器部品屑の中から、銅製錬工程で回収可能な有価金属の損失を抑制しながら、製錬阻害物質の１つであるＳｂを取り除くことが可能な部品屑の処理方法を提供する。 In view of the above problems, the present invention presents Sb, which is one of the smelting inhibitors, from among the scraps of electronic and electrical equipment parts including electric wire scraps, while suppressing the loss of valuable metals that can be recovered in the copper smelting process. Provided is a method for treating component waste that can be removed.

本発明者は上記課題を解決するために鋭意検討したところ、電線屑を含む電子・電気機器部品屑に対し、破砕、磁選及び粉砕した後に湿式比重選別を行い、重比重物、中間比重物及び軽比重物に選別することが有効であるとの知見を得た。 As a result of diligent studies to solve the above problems, the present inventor crushes, magnetically sorts, and crushes electronic / electrical equipment parts scraps including electric wire scraps, and then performs wet specific density sorting to perform heavy specific density substances, intermediate specific gravity substances, and wastes. We obtained the finding that it is effective to sort into light-density materials.

以上の知見を基礎として完成した本発明の実施の形態に係る部品屑の処理方法は一側面において、電線屑を含む電子・電気機器部品屑を破砕することと、破砕物を磁力選別して鉄を含む電線屑を除去することと、磁力選別で得られた非磁選物を粉砕処理することと、粉砕処理による粉砕物を湿式比重選別機で重比重物、中間比重物及び軽比重物に分け、軽比重物中にアンチモンを濃縮させることを含む。 The method for treating parts scraps according to the embodiment of the present invention completed based on the above findings is, on one side, crushing electronic / electrical equipment parts scraps including electric wire scraps and magnetically separating the crushed materials to iron. Removes electric wire scraps containing Includes concentration of antimony in light density material.

本発明に係る部品屑の処理方法は一実施態様において、電子・電気機器部品屑中の電線屑の比率が３０％以上である。 In one embodiment of the method for treating component scraps according to the present invention, the ratio of wire scraps to electronic / electrical equipment component scraps is 30% or more.

本発明に係る部品屑の処理方法は別の一実施態様において、電子・電気機器部品屑が、風力選別後、スリット状の篩を有する篩別機で選別された篩下物である。 In another embodiment, the method for treating component waste according to the present invention is a sieve product in which electronic / electrical equipment component waste is sorted by a sieving machine having a slit-shaped sieve after wind power sorting.

本発明に係る部品屑の処理方法は更に別の一実施態様において、重比重物及び中間比重物から有価金属を回収することを含む。 In yet another embodiment, the method for treating component scraps according to the present invention includes recovering valuable metals from heavy-weight and intermediate-density materials.

本発明に係る部品屑の処理方法は更に別の一実施態様において、軽比重物を篩別し、篩上物にアンチモンを更に濃縮させる篩別工程を更に含む。 In yet another embodiment, the method for treating component waste according to the present invention further includes a sieving step of sieving a light specific gravity substance and further concentrating antimony on the sieving product.

本発明に係る部品屑の処理方法は更に別の一実施態様において、篩別工程が、０．１〜１．０ｍｍの篩で分別することを含み、１．０ｍｍの篩で篩い分けされた篩上物を取り除く。 In still another embodiment, the method for treating component waste according to the present invention comprises a sieving step of sorting with a 0.1 to 1.0 mm sieve, and the sieve is sieved with a 1.0 mm sieve. Remove the finest.

本発明に係る部品屑の処理方法は更に別の一実施態様において、有価金属が、金、銀、銅を含む。 In yet another embodiment of the method for treating component scraps according to the present invention, valuable metals include gold, silver, and copper.

本発明に係る部品屑の処理方法は更に別の一実施態様において、電線屑を含む電子・電気機器部品屑を破砕する前に、電子・電気機器部品屑に含まれるネジ及び針金を含むステンレス片を手選別することを更に含む。 In still another embodiment, the method for treating component scraps according to the present invention is a stainless steel piece containing screws and wires contained in electronic / electrical equipment component scraps before crushing the electronic / electrical equipment component scraps including electric wire scraps. Further includes hand sorting.

本発明によれば、銅製錬工程で回収可能な有価金属の損失を抑制しながら、製錬阻害物質の１つであるＳｂを取り除くことが可能な部品屑の処理方法が提供できる。 According to the present invention, it is possible to provide a method for treating parts waste capable of removing Sb, which is one of the smelting inhibitors, while suppressing the loss of valuable metals that can be recovered in the copper smelting process.

本実施例に係る部品屑の処理方法を表す処理フロー及び各処理における主要金属の品位、物量及び分配率を表すフロー図である。It is a processing flow which shows the processing method of the component waste which concerns on this Example, and is the flow figure which shows the grade, quantity and distribution rate of the main metal in each processing.

本発明の実施の形態に係る部品屑の処理方法は、電線屑を含む電子・電気機器部品屑を破砕することと、破砕物を磁力選別して鉄を含む電線屑を除去することと、磁力選別で得られた磁選物を粉砕処理することと、粉砕処理による粉砕物を湿式比重選別機で重比重物、中間比重物及び軽比重物に分け、軽比重物中にアンチモンを濃縮させることを含む。 The method for treating component scraps according to the embodiment of the present invention is to crush electronic / electrical equipment component scraps including electric wire scraps, magnetically separate crushed materials to remove electric wire scraps containing iron, and magnetic force. The magnetic separation obtained by sorting is crushed, and the crushed material is separated into a heavy-weight material, an intermediate-weight material and a light-density material by a wet specific-density sorter, and antimony is concentrated in the light-density material. include.

本実施形態に係る「電子・電気機器部品屑」は、廃家電製品・ＰＣや携帯電話等の電子・電気機器を破砕した屑であり、回収された後、適当な大きさに破砕されたものを指す。この電子・電気機器部品屑は、基板、パーツ、筐体などに使われる合成樹脂類（プラスチック）、電線屑、メタル、フィルム状部品屑、破砕や粉砕によって生じる粉状物、その他からなる部品屑を含んでいる。以下に限定されるものではないが、本実施形態では、粒度５０ｍｍ以下に破砕されており、且つ部品屑として単体分離されている割合が７０％以上のものでも電子・電気機器部品屑を好適に処理することができる。 The "electronic / electrical equipment parts waste" according to the present embodiment is waste crushed electronic / electrical equipment such as waste home appliances / PCs and mobile phones, and is crushed to an appropriate size after being collected. Point to. This electronic / electrical equipment parts waste consists of synthetic resins (plastics) used for substrates, parts, housings, etc., electric wire waste, metal, film-like parts waste, powders generated by crushing and crushing, and other parts waste. Includes. Although not limited to the following, in the present embodiment, even if the particle size is crushed to 50 mm or less and the ratio of being separated as individual parts is 70% or more, the electronic / electrical equipment parts waste is preferably used. Can be processed.

特に、本発明の実施の形態に係る部品屑の処理方法に適した原料としては、種々の部品屑を含む電子・電気機器部品屑の中でも、電線屑の比率を高めた原料が好ましい。電線屑には、被覆銅線、非被覆銅線、鉄屑、ネジ、針金などのステンレス片が含まれる。典型的には、電子・電気機器部品屑中の電線屑の比率が３０％以上、更には６０％以上、更には９０％以上の材料が好適に利用できる。 In particular, as a raw material suitable for the method for treating component scraps according to the embodiment of the present invention, a raw material having a high ratio of electric wire scraps among electronic / electrical equipment component scraps including various component scraps is preferable. Wire scraps include coated copper wires, uncoated copper wires, iron scraps, screws, wires and other stainless steel pieces. Typically, a material having a ratio of electric wire scraps in electronic / electrical equipment component scraps of 30% or more, further 60% or more, and further 90% or more can be preferably used.

このような電線屑の比率の高い原料としては、廃家電製品・ＰＣや携帯電話等の電子・電気機器を破砕した後の原料を、風力選別し、スリット状のスリット状の篩を有する篩別機で選別された篩下物が好適に利用できる。このような順で処理された原料を利用することにより、本実施形態に係る湿式比重選別機によってより効率的に軽比重物側にアンチモンを濃縮させることができる。 As a raw material with a high ratio of such electric wire waste, the raw material after crushing waste home appliances, electronic / electrical equipment such as PCs and mobile phones is sorted by wind power, and a sieve having a slit-shaped slit-shaped sieve is separated. Machine-sorted sieves can be preferably used. By using the raw materials processed in such an order, antimony can be more efficiently concentrated on the light specific density side by the wet specific gravity sorter according to the present embodiment.

このような電線屑を含む電子・電気機器部品屑は、具体的には下記の（１）〜（５）の基本構成を有する装置によって処理することができる。 Specifically, electronic / electrical equipment component scraps including such electric wire scraps can be treated by an apparatus having the following basic configurations (1) to (5).

（１）破砕工程
破砕工程は、本実施形態に係る電線屑に衝撃を加えて破砕する工程であり、一軸破砕機、ジョークラッシャー、ハンマーミルなどの粗破砕機などが好適に用いられる。例えば、一軸破砕機を利用する場合には、電線屑を破砕する回転刃の回転数を１〜１０００ｒｐｍ、好ましくは１０〜３００ｒｐｍ、更に好ましくは１００〜２００ｒｐｍで投入量５００〜１５００ｋｇ／ｈで処理することが好ましい。 (1) Crushing Step The crushing step is a step of applying an impact to crushing the electric wire scraps according to the present embodiment, and a uniaxial crusher, a jaw crusher, a coarse crusher such as a hammer mill, or the like is preferably used. For example, when a uniaxial crusher is used, the rotation speed of the rotary blade for crushing the electric wire waste is 1 to 1000 rpm, preferably 10 to 300 rpm, more preferably 100 to 200 rpm, and the input amount is 500 to 1500 kg / h. Is preferable.

（２）磁選工程
磁力選別工程では、破砕工程で得られた破砕物を磁力で磁着物と非磁着物とに選別する工程である。磁着物としては、鉄、ステンレスなどを含み、非磁着物としては、銅、アルミ、合成樹脂類などを含む。Ｓｂを含む被覆銅線の破砕物は非磁着物中に含まれる。磁力選別には、磁力線選別機を用いることができる。例えば、鉄除去に磁力線別機を用いた場合は磁力を１０００〜３０００Ｇ、好ましくは１５００〜２５００Ｇ、ステンレスを合わせて除去するために磁力選別機を用いた場合には５０００〜２００００Ｇ、好ましくは１００００〜１５０００Ｇに設定して行うことができる。 (2) Magnetic Separation Step The magnetic force sorting step is a step of sorting the crushed material obtained in the crushing step into magnetic and non-magnetic particles by magnetic force. The magnetic material includes iron, stainless steel and the like, and the non-magnetic material includes copper, aluminum, synthetic resins and the like. The crushed material of the coated copper wire containing Sb is contained in the non-magnetic material. A magnetic force line sorter can be used for magnetic force sorting. For example, when a magnetic force line separator is used to remove iron, the magnetic force is 1000 to 3000 G, preferably 1500 to 2500 G, and when a magnetic force sorter is used to remove stainless steel together, 5000 to 20000 G, preferably 1000 to 0 It can be set to 15000G.

（３）粉砕工程
粉砕工程では、磁力選別で得られた破砕処理後の非磁選物を更に細かく粉状にする工程であり、粉砕機を用いた処理が行われる。粉砕機としては、カッターミルなどせん断式の破砕機が用いられる。粉砕機によって非磁選物として粒径約０〜５ｍｍ程度の粉末物が得られる。粉砕機での処理に付随して発生するダストや粉砕機内に残る微粉は処理系外へ出される。 (3) Crushing Step The crushing step is a step of further finely pulverizing the non-magnetic material after the crushing treatment obtained by magnetic force sorting, and the treatment using a crusher is performed. As the crusher, a shear type crusher such as a cutter mill is used. A powder having a particle size of about 0 to 5 mm can be obtained as a non-magnetic separation by a crusher. The dust generated by the processing in the crusher and the fine powder remaining in the crusher are discharged to the outside of the processing system.

（４）湿式比重工程
粉砕処理で得られた粉砕物は更に湿式比重選別が行われる。湿式比重選別とは、比重の違いにより被処理物を選別する処理であり、湿式比重選別機を用いて処理を行うことができる。湿式比重選別機としては、例えば湿式薄流選別機などを用いることができ、これにより、重比重物、中間比重物及び軽比重物に分類される。重比重物、中間比重物及び軽比重物は相対的な比重の違いを意味するものであるが、概ね重比中物は嵩比重が１．２〜１０．０ｇ／ｃｍ3、中間比重物は嵩比重が０．６〜１．２ｇ／ｃｍ3、軽比重物は嵩比重が０．２〜０．６ｇ／ｃｍ3程度である。 (4) Wet Specific Density Step The pulverized product obtained by the pulverization treatment is further subjected to wet specific gravity sorting. The wet specific gravity sorting is a process of sorting an object to be treated according to the difference in specific densities, and the process can be performed using a wet specific gravity sorter. As the wet specific gravity sorter, for example, a wet thin flow sorter can be used, and the wet specific gravity sorter is classified into a heavy specific density substance, an intermediate specific gravity substance, and a light specific gravity substance. Heavy specific gravity thereof, the intermediate specific gravity thereof and light specific gravity thereof is intended to mean the difference between relative density generally heavy ratio in the product has a bulk density 1.2~10.0g / cm 3, an intermediate specific gravity was The bulk specific density is 0.6 to 1.2 g / cm 3 , and the light specific density is about 0.2 to 0.6 g / cm 3.

湿式比重選別は、例えばテーブル選別機を用いて処理を行うことができる。これにより、Ｓｂを含む被覆銅線の粉状物は軽比重物側に濃縮され、重比重物中に金を含む有価金属が濃縮される。有価金属は中間比重物にも多く含まれるため、重比重物及び中間比重物から有価金属を回収する。 The wet specific gravity sorting can be performed using, for example, a table sorter. As a result, the powdery material of the coated copper wire containing Sb is concentrated on the side of the light specific weight material, and the valuable metal containing gold is concentrated in the heavy specific weight material. Since a large amount of valuable metal is also contained in the intermediate specific density material, the valuable metal is recovered from the heavy specific density material and the intermediate specific gravity material.

（５）篩別工程
Ｓｂが濃縮された軽比重物にも金、銀、銅などの有価金属が含まれているため、軽比重物に対しては、更に篩別工程を実施する。篩別工程は、軽比重物を篩にかけて選別する工程であり篩別機を用いて処理することができる。篩としては０．１〜１．０ｍｍの篩を用いることができ、更に好ましくは０．５〜１．０ｍｍの篩を用いることができる。 (5) Sieving Step Since the light specific weight material in which Sb is concentrated also contains valuable metals such as gold, silver, and copper, a further sieving step is carried out for the light specific weight material. The sieving step is a step of sieving a light specific weight substance to sort it, and can be processed by using a sieving machine. As the sieve, a sieve of 0.1 to 1.0 mm can be used, and more preferably a sieve of 0.5 to 1.0 mm can be used.

篩別工程によって得られた篩上物にはＳｂが濃縮されるため、篩上物を取り除くことにより、電線屑中からＳｂを分離することができる。篩下物には、金、銀、銅などの有価金属が含まれるため、上述の重比重物及び中間比重物と同様に製錬工程において処理する処理物とすることで、電線屑中の被覆銅線に含まれるＳｂを選択的に分離でき、これにより銅製錬で回収可能な金属を濃縮して銅製錬工程での部品屑処理をより効率的に進めることが可能となる。 Since Sb is concentrated in the sieve product obtained by the sieving step, Sb can be separated from the wire waste by removing the sieve product. Since the sieving material contains valuable metals such as gold, silver, and copper, it is possible to cover the wire waste by making it a processed material to be processed in the smelting process in the same manner as the above-mentioned heavy weighted material and intermediate specific weighted material. Sb contained in the copper wire can be selectively separated, which makes it possible to concentrate the metal recoverable in the copper smelting and proceed with the waste processing of parts in the copper smelting process more efficiently.

なお、粉砕工程に供給される破砕物中にネジ、針金などの異物が混入すると、破砕機のカッターを傷める場合がある。そのため、電線屑を含む電子・電気機器部品屑を破砕処理する前に、電線屑に含まれるネジ、針金を含むステンレス片や鉄片を除去する手選別工程を更に含むことが好ましい。 If foreign matter such as screws or wires is mixed in the crushed material supplied to the crushing process, the cutter of the crusher may be damaged. Therefore, it is preferable to further include a manual sorting step of removing stainless steel pieces and iron pieces including screws and wires contained in the wire scraps before crushing the electronic / electrical equipment parts scraps including the wire scraps.

以下に本発明の実施例を比較例と共に示すが、これらの実施例は本発明及びその利点をよりよく理解するために提供するものであり、発明が限定されることを意図するものではない。 Examples of the present invention are shown below together with comparative examples, but these examples are provided for a better understanding of the present invention and its advantages, and are not intended to limit the invention.

図１に示すように、電線屑を質量比で３０％程度含む電子・電気機器部品屑に対し、上述した手選、破砕、磁選、粉砕、湿式比重選別を行って、重比量物、軽比量物、中間比量物を得たところ、軽比量物中に原料全体の５０％程度のＳｂを濃縮させることができた。更に、軽比量物に対して１．０ｍｍの篩を用いて篩い分けを行ったところ、１．０ｍｍの篩の篩上物にアンチモンを３５％濃縮させることができた。 As shown in FIG. 1, the electronic / electrical equipment parts scraps containing about 30% by mass of electric wire scraps are subjected to the above-mentioned manual selection, crushing, magnetic sorting, crushing, and wet specific gravity sorting to produce a heavy weight material and a light weight. When the specific product and the intermediate specific product were obtained, about 50% of Sb of the whole raw material could be concentrated in the light specific product. Further, when the light specific weight was sieved using a 1.0 mm sieve, antimony could be concentrated by 35% on the sieved product of the 1.0 mm sieve.

このように、本実施例によれば、湿式比重選別により軽比重物を選別し、軽比重物に対して篩別工程を行うことにより、Ｓｂの濃縮とＡｕの重比重物、中間比重物及び篩下物への濃縮ができることが分かった。 As described above, according to the present embodiment, the light specific densities are sorted by wet specific gravities and the light densities are screened to concentrate Sb and Au's heavy densities, intermediate densities and the like. It was found that it can be concentrated in the sieve.

Claims (8)

電線屑を含む電子・電気機器部品屑を破砕することと、
破砕物を磁力選別して鉄を含む電線屑を除去することと、
磁力選別で得られた非磁選物を粉砕処理することと、
前記粉砕処理による粉砕物を湿式比重選別機で重比重物、中間比重物及び軽比重物に分け、前記軽比重物中にアンチモンを濃縮させること
を含むことを特徴とする部品屑の処理方法。 Crushing electronic and electrical equipment parts scraps, including wire scraps,
By magnetically sorting the crushed material to remove electric wire scraps containing iron,
Grinding the non-magnetic separation obtained by magnetic separation and
A method for treating parts waste, which comprises separating a crushed product by the pulverization treatment into a heavy specific density substance, an intermediate specific gravity substance, and a light specific gravity substance by a wet specific gravity sorter, and concentrating antimony in the light specific gravity substance. 前記電子・電気機器部品屑中の前記電線屑の比率が３０％以上であることを特徴とする請求項１に記載の部品屑の処理方法。 The method for treating component waste according to claim 1, wherein the ratio of the electric wire waste to the electronic / electrical equipment component waste is 30% or more. 前記電子・電気機器部品屑が、風力選別後、スリット状の篩を有する篩別機で選別された篩下物であることを特徴とする請求項１又は２に記載の部品屑の処理方法。 The method for treating component waste according to claim 1 or 2, wherein the electronic / electrical equipment component waste is a sieve product sorted by a sieving machine having a slit-shaped sieve after wind power sorting. 前記重比重物及び前記中間比重物から有価金属を回収することを含むことを特徴とする請求項１〜３のいずれか１項に記載の部品屑の処理方法。 The method for treating parts waste according to any one of claims 1 to 3, further comprising recovering a valuable metal from the heavy-weight material and the intermediate-weight material. 前記軽比重物を篩別し、篩上物にアンチモンを更に濃縮させる篩別工程を更に含むことを特徴とする請求項１〜４のいずれか１項に記載の部品屑の処理方法。 The method for treating component waste according to any one of claims 1 to 4, further comprising a sieving step of sieving the light specific gravity substance and further concentrating antimony on the sieving product. 前記篩別工程が、０．１〜１．０ｍｍの篩で分別することを含み、１．０ｍｍの篩で篩い分けされた篩上物を取り除くことを特徴とする請求項５に記載の部品屑の処理方法。 The component waste according to claim 5, wherein the sieving step includes sorting with a 0.1 to 1.0 mm sieve, and removes the sieving material sieved with a 1.0 mm sieve. Processing method. 前記有価金属が、金、銀、銅を含むことを特徴とする請求項４に記載の部品屑の処理方法。 The method for treating parts waste according to claim 4, wherein the valuable metal contains gold, silver, and copper. 前記電線屑を含む電子・電気機器部品屑を破砕する前に、前記電子・電気機器部品屑に含まれるネジ及び針金を含むステンレス片を手選別することを更に含む請求項１〜７のいずれか１項に記載の部品屑の処理方法。 Any of claims 1 to 7, further comprising manually sorting stainless steel pieces containing screws and wires contained in the electronic / electrical equipment component waste before crushing the electronic / electrical equipment component waste containing the electric wire waste. The method for treating parts waste according to item 1.
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