JP6742049B1 - 有価物の回収方法 - Google Patents
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- 229910052751 metal Inorganic materials 0.000 description 84
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- 229910052719 titanium Inorganic materials 0.000 description 70
- 239000010936 titanium Substances 0.000 description 70
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 69
- 239000002585 base Substances 0.000 description 61
- 235000012431 wafers Nutrition 0.000 description 28
- 238000004458 analytical method Methods 0.000 description 23
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 19
- 238000001914 filtration Methods 0.000 description 12
- 239000000126 substance Substances 0.000 description 12
- 239000002245 particle Substances 0.000 description 9
- 238000005498 polishing Methods 0.000 description 8
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- 150000002739 metals Chemical class 0.000 description 4
- -1 platinum group metal oxide Chemical class 0.000 description 4
- 238000004611 spectroscopical analysis Methods 0.000 description 4
- KRHYYFGTRYWZRS-UHFFFAOYSA-N hydrofluoric acid Substances F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- 229910044991 metal oxide Inorganic materials 0.000 description 3
- 229910000510 noble metal Inorganic materials 0.000 description 3
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 description 3
- 229910052697 platinum Inorganic materials 0.000 description 3
- 239000010970 precious metal Substances 0.000 description 3
- 238000000967 suction filtration Methods 0.000 description 3
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- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 2
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- 229910052692 Dysprosium Inorganic materials 0.000 description 1
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- 229910052693 Europium Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910052688 Gadolinium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 229910052765 Lutetium Inorganic materials 0.000 description 1
- 229910052779 Neodymium Inorganic materials 0.000 description 1
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 1
- 229910052777 Praseodymium Inorganic materials 0.000 description 1
- 229910052772 Samarium Inorganic materials 0.000 description 1
- 229910052771 Terbium Inorganic materials 0.000 description 1
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- 238000002441 X-ray diffraction Methods 0.000 description 1
- 229910052769 Ytterbium Inorganic materials 0.000 description 1
- YJZATOSJMRIRIW-UHFFFAOYSA-N [Ir]=O Chemical compound [Ir]=O YJZATOSJMRIRIW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003463 adsorbent Substances 0.000 description 1
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- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- 229910052746 lanthanum Inorganic materials 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 229910052744 lithium Inorganic materials 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910017604 nitric acid Inorganic materials 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
- MUMZUERVLWJKNR-UHFFFAOYSA-N oxoplatinum Chemical compound [Pt]=O MUMZUERVLWJKNR-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 229910052702 rhenium Inorganic materials 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- 229910052706 scandium Inorganic materials 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- C22B11/00—Obtaining noble metals
- C22B11/02—Obtaining noble metals by dry processes
- C22B11/021—Recovery of noble metals from waste materials
- C22B11/023—Recovery of noble metals from waste materials from pyrometallurgical residues, e.g. from ashes, dross, flue dust, mud, skim, slag, sludge
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/12—Working by laser beam, e.g. welding, cutting or boring in a special atmosphere, e.g. in an enclosure
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
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Abstract
Description
準備工程においては、基材の表面に有価物を含有する有価物含有部材を有する被処理物を準備する。
浸漬工程においては、上記被処理物の上記有価物含有部材が液体中に配置されるように上記被処理物を上記液体中に浸漬する。
捕集工程においては、上記液体中に浸漬された上記被処理物の上記有価物含有部材に対し、上記液体を介してレーザー光を照射することにより、上記被処理物から上記有価物含有部材を剥離し、上記有価物含有部材の剥離物を上記液体中に捕集する。
回収工程においては、上記液体から上記有価物含有部材の剥離物を回収する。
実施形態の有価金属の回収方法は、準備工程で準備する被処理物が有価物含有部材の表面にレーザー光を遮蔽するシール等の遮蔽物を有する場合には、捕集工程前に被処理物から遮蔽物を除去する除去工程をさらに備えていてもよい。また、有価金属の回収方法は、回収工程後に回収工程で回収された剥離物に含有される有価物の品位(濃度)を高める濃縮工程をさらに備えてもよい。有価物の再利用を容易にすることができるからである。
有価物の回収装置は、その使用により実施形態の有価金属の回収方法を実施できるものであれば特に限定されないが、例えば、図2に示す有価物回収装置100のように、液槽(例えば、流水槽12)と、液槽に入れられた液体(例えば、水10)と、液槽の液体中に浸漬された被処理物の有価物含有部材に対し、液体を介してレーザー光を照射するレーザー照射装置(例えば、レーザー照射装置60)と、を備えるものである。有価物の回収装置としては、これらの構成に加えて、液槽の液体を流す送液機構(例えば、流水槽12、循環水槽22、給水路30、循環送液ポンプ24、流量調整バルブ26、及び排水路40から構成される送液機構)を備えるものが好ましい。液体を流しながら、被処理物の有価物含有部材に対しレーザー光を照射することができるからである。有価物の回収装置としては、送液機構に加えて、送液機構の液体の流路に有価物含有部材の剥離物を濾過する濾過装置を備えるものが好ましい。液体の交換を行う必要が無くなるため、有価金属の回収方法を連続して実施することができるからである。
実施形態に係る有価物の回収方法により、チタン基材電極スクラップ(被処理物)の有価物の回収処理を行った後、回収後の基材及び回収物の評価を行った。
まず、図1(a)に示すように、チタン基材2(基材)の表面2sにPt(白金)の酸化物(有価物)及びIr(イリジウム)の酸化物(有価物)を塗布することで形成した金属被膜(有価物含有部材)4を有するチタン基材電極スクラップ(被処理物)6を20枚準備した(準備工程)。
製品名:PCL株式会社製レーザークリーナー
型式:CLX−100LS SH
種類:パルスファイバーレーザー
波長:1060nm〜1070nm
最大平均出力:100W
レーザー最大ピーク出力:10kW
繰返し周波数:100kHz
消費電力:1400W(最大)
電源:AC100V±10% 15A
種別:fθ=254(焦点距離:約285mm〜290mm)
レーザービームのスポット径:50μm
照射エリアのサイズ:160mm×160mm(最大)
スキャン速度:50μm/pulse
送り速度:50μm/line
レーザー出力:100%
照射回数:10回
金属被膜剥離後の20枚のチタン基材電極スクラップ6は、合計重量が2804.7gであった。金属被膜4を剥離する前との重量差は6.2gとなった。金属被膜剥離後の20枚のチタン基材電極スクラップ6の平均の組成をXRFにより分析した結果を下記表2に示す。XRFの分析は、金属被膜剥離後の20枚のチタン基材電極スクラップ6を分析試料として用い、剥離前のスクラップの分析と同様の装置を使用して行った。
実施形態に係る有価物の回収方法により、Ir付ウェハ(被処理物)の有価物の回収処理を行った後、回収後の基材及び回収物の評価を行った。
まず、シリコンウェハ(基材)の平坦な表面にIr(イリジウム)(有価物)を含有するIr被膜(有価物含有部材)を有するIr付ウェハ(被処理物)を12枚準備した(準備工程)。
製品名:PCL株式会社製レーザークリーナー
型式:CLX−100LS SH
種類:パルスファイバーレーザー
波長:1060nm〜1070nm
最大平均出力:100W
レーザー最大ピーク出力:10kW
繰返し周波数:100kHz
消費電力:1400W(最大)
電源:AC100V±10% 15A
種別:fθ=254(焦点距離:約285mm〜290mm)
レーザービームのスポット径:50μm
照射エリアのサイズ:160mm×160mm(最大)
スキャン速度:50μm/pulse
送り速度:50μm/line
レーザー出力:100%
照射回数:10回
Ir被膜剥離後の12枚のIr付ウェハは、合計重量が640.3gであった。Ir被膜を剥離する前との重量差は0.8gとなった。Ir被膜剥離後の12枚のIr付ウェハの平均の組成をXRFにより分析した結果を下記表5に示す。XRFの分析は、Ir被膜剥離後の12枚のIr付ウェハを分析試料として用い、実施例1の剥離前のスクラップの分析と同様の装置を使用して行った。
4 金属被膜
4p 剥離物
6 チタン基材電極スクラップ
10 水
10m 水膜
12 流水槽
14 被処理物設置台
16 高さ調節ネジ
18 排水口
20 傾斜調整ジャッキ
22 循環水槽
24 循環送液ポンプ
26 流量調整バルブ
28 上下稼働架台
30 給水路
40 排水路
50 レーザー機ヘッド
60 レーザー照射装置
100 有価物回収装置
Claims (3)
- 基材の表面に有価物を含有する有価物含有部材を有する被処理物を準備する準備工程と、
前記被処理物の前記有価物含有部材が液体中に配置されるように前記被処理物を前記液体中に浸漬する浸漬工程と、
前記液体中に浸漬された前記被処理物の前記有価物含有部材に対し、前記液体を介してレーザー光を照射することにより、前記被処理物から前記有価物含有部材を剥離し、前記有価物含有部材の剥離物を前記液体中に捕集する捕集工程と、
前記液体から前記有価物含有部材の剥離物を回収する回収工程と
を備えることを特徴とする有価物の回収方法。 - 前記捕集工程において、前記液体を流しながら、前記被処理物の前記有価物含有部材に対し前記レーザー光を照射することを特徴とする請求項1に記載の有価物の回収方法。
- 前記捕集工程において、前記被処理物の前記有価物含有部材に対し、前記有価物含有部材を剥離でき、かつ前記基材に損傷を与えない照射条件で前記レーザー光を照射することを特徴とする請求項1又は2に記載の有価物の回収方法。
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JP2020100885A JP6742049B1 (ja) | 2020-06-10 | 2020-06-10 | 有価物の回収方法 |
US17/325,449 US20210388461A1 (en) | 2020-06-10 | 2021-05-20 | Method for recovering valuables |
TW110118637A TWI765719B (zh) | 2020-06-10 | 2021-05-24 | 有價物之回收方法 |
KR1020210067054A KR102510609B1 (ko) | 2020-06-10 | 2021-05-25 | 유가물의 회수 방법 |
ZA2021/03666A ZA202103666B (en) | 2020-06-10 | 2021-05-28 | Method for recovering valuables |
AU2021203602A AU2021203602B2 (en) | 2020-06-10 | 2021-06-02 | Method for recovering valuables |
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Citations (2)
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JPH10125931A (ja) * | 1996-08-27 | 1998-05-15 | Seiko Epson Corp | 薄膜素子の転写方法,薄膜素子,薄膜集積回路装置,アクティブマトリクス基板および液晶表示装置 |
JP2020117929A (ja) * | 2019-01-23 | 2020-08-06 | Ihi運搬機械株式会社 | 機械式駐車装置 |
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US6720522B2 (en) * | 2000-10-26 | 2004-04-13 | Kabushiki Kaisha Toshiba | Apparatus and method for laser beam machining, and method for manufacturing semiconductor devices using laser beam machining |
JP2007029973A (ja) * | 2005-07-25 | 2007-02-08 | Sony Corp | レーザ加工装置とその加工方法及びデブリ回収装置とその回収方法 |
KR101845480B1 (ko) * | 2010-06-25 | 2018-04-04 | 가부시키가이샤 한도오따이 에네루기 켄큐쇼 | 반도체 장치의 제작 방법 |
FR2974021B1 (fr) * | 2011-04-18 | 2013-04-05 | Commissariat Energie Atomique | Procede pour la preparation de particules metalliques |
SG11201403228RA (en) * | 2011-12-15 | 2014-07-30 | Advanced Tech Materials | Apparatus and method for stripping solder metals during the recycling of waste electrical and electronic equipment |
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JPH10125931A (ja) * | 1996-08-27 | 1998-05-15 | Seiko Epson Corp | 薄膜素子の転写方法,薄膜素子,薄膜集積回路装置,アクティブマトリクス基板および液晶表示装置 |
JP2020117929A (ja) * | 2019-01-23 | 2020-08-06 | Ihi運搬機械株式会社 | 機械式駐車装置 |
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US20210388461A1 (en) | 2021-12-16 |
JP2021194564A (ja) | 2021-12-27 |
EP3922742A1 (en) | 2021-12-15 |
ZA202103666B (en) | 2022-09-28 |
TWI765719B (zh) | 2022-05-21 |
AU2021203602A1 (en) | 2022-01-06 |
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