KR20160054619A - 폐 인쇄 회로판의 재순환 방법 - Google Patents
폐 인쇄 회로판의 재순환 방법 Download PDFInfo
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- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/20—Electrolytic production, recovery or refining of metals by electrolysis of solutions of noble metals
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
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- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/17—Post-manufacturing processes
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- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
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Abstract
Description
도 2는 인쇄 배선판을 재순환시키는 방법의 제 2 실시양태를 도시한다.
도 3은 인쇄 배선판을 재순환시키는 방법의 제 3 실시양태를 도시한다.
도 4는 인쇄 배선판을 재순환시키는 방법의 제 4 실시양태를 도시한다.
도 5는 인쇄 배선판을 재순환시키는 방법의 제 5 실시양태를 도시한다.
| 배합물 | 수욕 결과 |
| C | 10분, Au 70%가 용해됨 20분, Au 100%가 용해됨 |
| D | 10분, 변화 없음 20분, 변화 없음 30분, 변화 없음 |
| E | 10분, Au 100%가 용해됨 |
| F | 10분, Au 75%가 용해됨 15분 이내, Au 100%가 용해됨 |
| G | 10분, Au 5%가 용해됨 20분, Au 50%가 용해됨 25분 이내, Au 85%가 용해됨 30분 이내, Au 100%가 용해됨 |
| KI, 과황산나트륨 및 물 | KI, 과황산암모늄 및 물 | KI, 옥손 및 물 | |
| 금속 | ㎍/mL | ||
| Ag | 0.14 | 0.09 | 0.42 |
| Al | 0.092 | ||
| Au | 281.42 | 250.47 | 214.44 |
| Co | 0.031 | 0.02 | 0.013 |
| Cu | 19.3 | 23.15 | 28.2 |
| Fe | 0.15 | ||
| Ni | 10.89 | 9.64 | 15.07 |
| Pb | 3.3 | 3.06 | 2.21 |
| Sn | 0.37 | 0.33 | 0.44 |
| Zn | 24.46 | 25.69 | 0.17 |
| 40℃, 조성물 F 50g, PWB 21조각 | 실온, 조성물 F 36g, PWB 27조각 | |
| 금속 | ㎍/mL | |
| Ag | 0.012 | 0.014 |
| Au | 160.99 | 676.97 |
| Co | 0.008 | 0.014 |
| Cu | 4.91 | 5.39 |
| Ni | 4.38 | 9.14 |
| Pb | 0.11 | 0.088 |
| Sn | 0.13 | |
| 원소 | Ag | Au | Pt | Pb | Zn | Cu | Fe | Sn | 기타 |
| % | 0.158 | 1.564 | 0.395 | 15.615 | 10.794 | 52.766 | 6.015 | 9.813 | 2.880 |
Claims (30)
- 인쇄 배선판(PWB)의 배취(batch) 및/또는 PWB 소자들의 배취를 처리하는 방법으로서,
(a) 용기 내에서 상기 PWB의 배취 및/또는 PWB 소자들의 배취를 침출(leaching) 조성물과 접촉시키는 단계; 및
(b) 상기 PWB의 배취 및/또는 PWB 소자들의 배취를 세정(rinse) 용액으로 세정하는 단계
를 포함하며, 이때
상기 침출 조성물이 상기 PWB 및/또는 PWB 소자들로부터 하나 이상의 귀금속을 제거하는, 방법. - 제 1 항에 있어서,
상기 침출 조성물에 상기 하나 이상의 귀금속이 용해되는, 방법. - 제 1 항에 있어서,
상기 침출 조성물이, 하나 이상의 산화제, 하나 이상의 요오다이드 염 또는 요오드화수소산, 물, 및 임의적으로, 하나 이상의 금속 부동태화제를 포함하는, 방법. - 제 1 항에 있어서,
상기 PWB로부터 하나 이상의 PWB 소자를 분리함을 추가로 포함하는 방법. - 제 1 항에 있어서,
상기 하나 이상의 PWB 소자가, 트랜지스터, 커패시터, 방열기, 집적 회로, 저항기, 집적 스위치, 칩, 프로세서, 및 이들의 조합으로 이루어진 군으로부터 선택되는, 방법. - 제 4 항에 있어서,
상기 PWB 소자가 땜납에 의해 상기 PWB에 결합되어 있고,
상기 분리는, 상기 땜납을 용해시키는 것, 상기 땜납을 용융시키는 것 또는 상기 PWB로부터 상기 PWB 소자를 절단하거나, 전단처리(shearing)하거나 또는 당기는 것을 포함하는, 방법. - 제 6 항에 있어서,
상기 땜납이 납, 주석 또는 납/주석 합금을 포함하는, 방법. - 제 1 항에 있어서,
상기 침출 조성물과 접촉될 상기 PWB 및/또는 PWB 소자들이 분말로 분쇄되거나 조각으로 절단되거나 파쇄되거나 그대로 처리되는, 방법. - 제 1 항에 있어서,
상기 침출 조성물이 트라이요오다이드 이온을 포함하는, 방법. - 제 1 항에 있어서,
상기 하나 이상의 귀금속이 금을 포함하고,
상기 금이 불균등화(disproportionation) 반응 또는 환원제를 이용하여, 또는 전해채취(electrowinning)에 의해 회수되는, 방법. - 제 1 항에 있어서,
상기 PWB가 유리 섬유 층, 구리 필름 및 접착제를 포함하는, 방법. - 제 1 항에 있어서,
상기 세정 용액이 전해채취에 의해 처리되는, 방법. - 제 6 항에 있어서,
상기 땜납이 제 1 조성물을 사용하여 용해되고, 이때 상기 제 1 조성물은 귀금속, 비귀금속(base metal) 및/또는 탄탈-함유 금속에 대해 땜납을 선택적으로 제거하는, 방법. - 제 13 항에 있어서,
상기 제 1 조성물이 하나 이상의 산화제 및 하나 이상의 부동태화제를 포함하고,
상기 제 1 조성물이 플루오라이드 염, 질산 제2철 및 다른 제2철 염, 티탄(IV) 염, 마모성 물질 및 플루오로붕산 중 하나 이상을 실질적으로 함유하지 않는, 방법. - 제 14 항에 있어서,
상기 하나 이상의 산화제가, 질산, 메테인설폰산, 에테인설폰산, 2-하이드록시에테인설폰산, n-프로페인설폰산, 아이소프로페인설폰산, 아이소뷰텐설폰산, n-뷰테인설폰산, n-옥테인설폰산, 벤젠설폰산, 4-메톡시벤젠설폰산, 4-하이드록시벤젠설폰산, 4-아미노벤젠설폰산, 4-나이트로벤젠설폰산, 톨루엔설폰산, 헥실벤젠설폰산, 헵틸벤젠설폰산, 옥틸벤젠설폰산, 노닐벤젠설폰산, 데실벤젠설폰산, 운데실벤젠설폰산, 도데실벤젠설폰산, 트라이데실벤젠설폰산, 테트라데실벤젠 설폰산, 헥사데실벤젠 설폰산, 3-나이트로벤젠설폰산, 2-나이트로벤젠설폰산, 2-나이트로나프탈렌설폰산, 3-나이트로나프탈렌설폰산, 2,3-다이나이트로벤젠설폰산, 2,4-다이나이트로벤젠설폰산, 2,5-다이나이트로벤젠설폰산, 2,6-다이나이트로벤젠설폰산, 3,5-다이나이트로벤젠설폰산, 2,4,6-트라이나이트로벤젠설폰산, 3-아미노벤젠설폰산, 2-아미노벤젠설폰산, 2-아미노나프탈렌설폰산, 3-아미노나프탈렌설폰산, 2,3-다이아미노벤젠설폰산, 2,4-다이아미노벤젠설폰산, 2,5-다이아미노벤젠설폰산, 2,6-다이아미노벤젠설폰산, 3,5-다이아미노벤젠설폰산, 2,4,6-트라이아미노벤젠설폰산, 3-하이드록시벤젠설폰산, 2-하이드록시벤젠설폰산, 2-하이드록시나프탈렌설폰산, 3-하이드록시나프탈렌설폰산, 2,3-다이하이드록시벤젠설폰산, 2,4-다이하이드록시벤젠설폰산, 2,5-다이하이드록시벤젠설폰산, 2,6-다이하이드록시벤젠설폰산, 3,5-다이하이드록시벤젠설폰산, 2,3,4-트라이하이드록시벤젠설폰산, 2,3,5-트라이하이드록시벤젠설폰산, 2,3,6-트라이하이드록시벤젠설폰산, 2,4,5-트라이하이드록시벤젠설폰산, 2,4,6-트라이하이드록시벤젠설폰산, 3,4,5-트라이하이드록시벤젠설폰산, 2,3,4,5-테트라하이드록시벤젠설폰산, 2,3,4,6-테트라하이드록시벤젠설폰산, 2,3,5,6-테트라하이드록시벤젠설폰산, 2,4,5,6-테트라하이드록시벤젠설폰산, 3-메톡시벤젠설폰산, 2-메톡시벤젠설폰산, 2,3-다이메톡시벤젠설폰산, 2,4-다이메톡시벤젠설폰산, 2,5-다이메톡시벤젠설폰산, 2,6-다이메톡시벤젠설폰산, 3,5-다이메톡시벤젠설폰산, 2,4,6-트라이메톡시벤젠설폰산, 오존, 폭기(bubbled) 공기, 사이클로헥실아미노설폰산, 과산화수소, 옥손, 암모늄 퍼옥소모노설페이트, 아염소산암모늄, 염소산암모늄, 요오드산암모늄, 과붕산암모늄, 과염소산암모늄, 과요오드산암모늄, 과황산암모늄, 차아염소산암모늄, 과황산나트륨, 차아염소산나트륨, 요오드산칼륨, 과망간산칼륨, 과황산칼륨, 차아염소산칼륨, 테트라메틸암모늄 클로라이트, 테트라메틸암모늄 클로레이트, 테트라메틸암모늄 요오데이트, 테트라메틸암모늄 퍼보레이트, 테트라메틸암모늄 퍼클로레이트, 테트라메틸암모늄 퍼요오데이트, 테트라메틸암모늄 퍼설페이트, 테트라뷰틸암모늄 퍼옥소모노설페이트, 퍼옥소모노황산, 우레아 과산화수소, 과아세트산, 질산나트륨, 질산칼륨, 질산암모늄, 또는 이들의 조합을 포함하는, 방법. - 제 14 항에 있어서,
상기 하나 이상의 산화제가 질산을 포함하는, 방법. - 제 14 항에 있어서,
상기 하나 이상의 산화제가, 메테인설폰산, 에테인설폰산, 2-하이드록시에테인설폰산, n-프로페인설폰산, 아이소프로페인설폰산, 아이소뷰텐설폰산, n-뷰테인설폰산 및 n-옥테인설폰산으로 이루어진 군으로부터 선택되는 알케인설폰산을 포함하는, 방법. - 제 17 항에 있어서,
상기 알케인설폰산이 메테인설폰산을 포함하는, 방법. - 제 14 항에 있어서,
상기 하나 이상의 부동태화제가 트라이아졸 유도체를 포함하는, 방법. - 제 19 항에 있어서,
상기 트라이아졸 유도체가 1,2,4-트라이아졸, 벤조트라이아졸, 톨릴트라이아졸, 5-페닐-벤조트라이아졸, 5-나이트로-벤조트라이아졸, 3-아미노-5-머캅토-1,2,4-트라이아졸, 1-아미노-1,2,4-트라이아졸, 하이드록시벤조트라이아졸, 2-(5-아미노-펜틸)-벤조트라이아졸, 1-아미노-1,2,3-트라이아졸, 1-아미노-5-메틸-1,2,3-트라이아졸, 3-아미노-1,2,4-트라이아졸, 3-머캅토-1,2,4-트라이아졸, 3-아이소프로필-1,2,4-트라이아졸, 5-페닐티올-벤조트라이아졸, 할로-벤조트라이아졸, 나프토트라이아졸 및 4-메틸-4H-1,2,4-트라이아졸-3-티올로 이루어진 군으로부터 선택되는, 방법. - 제 4 항에 있어서,
상기 분리 후에, 상기 PWB에 PWB 소자가 없는, 방법. - 제 1 항에 있어서,
상기 용기 내에서 상기 침출 조성물과 접촉시키는 동안 초음파선(ultrasonic radiation)을 생성시키는 단계를 포함하는 방법. - 제 3 항에 있어서,
상기 하나 이상의 산화제가 옥손, 과황산나트륨, 과황산암모늄, 과황산칼륨, 질산, 과요오드산, 차아염소산나트륨, 과산화수소, 염화 제2철, 질산 제2철 또는 이들의 조합으로 이루어진 군으로부터 선택되는 종을 포함하는, 방법. - 제 3 항에 있어서,
상기 하나 이상의 요오다이드 염이 요오드화리튬, 요오드화나트륨, 요오드화칼륨, 요오드화암모늄, 요오드화칼슘, 요오드화마그네슘 및 테트라알킬암모늄 요오다이드로 이루어진 군으로부터 선택되는 종을 포함하고, 이때 알킬기는 서로 동일하거나 상이할 수 있고 직쇄 C1-C6 알킬 및 분지된 C1-C6 알킬로 이루어진 군으로부터 선택되는, 방법. - 제 3 항에 있어서,
상기 침출 조성물이 상기 하나 이상의 부동태화제를 포함하고, 이때 상기 하나 이상의 부동태화제가, 벤조트라이아졸(BTA), 5-아미노테트라졸(ATA), 1,2,4-트라이아졸(TAZ), 트라이아졸 유도체, 아스코르브산, 몰리브덴산 나트륨 및 이들의 조합으로 이루어진 군으로부터 선택되는 종을 포함하는, 방법. - 제 3 항에 있어서,
상기 침출 조성물이 왕수(aqua regia) 및 시아나이드-함유 성분을 함유하지 않는, 방법. - 제 1 항에 있어서,
상기 귀금속이 금, 은, 백금, 팔라듐 및/또는 이들을 포함하는 합금을 포함하는, 방법. - 제 1 항에 있어서,
상기 침출 조성물을 재사용하는 것을 추가로 포함하는 방법. - 제 13 항에 있어서,
상기 제 1 조성물을 재사용하는 것을 추가로 포함하는 방법. - 제 1 항에 있어서,
하나 이상의 비귀금속이 상기 침출 조성물에 용해되는, 방법.
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