JP7441056B2 - 銅めっき廃液からの銅析出法およびそれを用いた銅分離回収装置 - Google Patents
銅めっき廃液からの銅析出法およびそれを用いた銅分離回収装置 Download PDFInfo
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- JP7441056B2 JP7441056B2 JP2020009668A JP2020009668A JP7441056B2 JP 7441056 B2 JP7441056 B2 JP 7441056B2 JP 2020009668 A JP2020009668 A JP 2020009668A JP 2020009668 A JP2020009668 A JP 2020009668A JP 7441056 B2 JP7441056 B2 JP 7441056B2
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- Prior art keywords
- copper
- nabh
- plating waste
- waste liquid
- particles
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 title claims description 225
- 239000010949 copper Substances 0.000 title claims description 224
- 229910052802 copper Inorganic materials 0.000 title claims description 223
- 238000007747 plating Methods 0.000 title claims description 65
- 239000007788 liquid Substances 0.000 title claims description 53
- 239000002699 waste material Substances 0.000 title claims description 52
- 238000000034 method Methods 0.000 title claims description 21
- 238000001556 precipitation Methods 0.000 title claims description 17
- 238000000926 separation method Methods 0.000 title description 13
- 238000011084 recovery Methods 0.000 title description 8
- 239000002245 particle Substances 0.000 claims description 37
- 239000010419 fine particle Substances 0.000 claims description 20
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 claims description 3
- 235000019254 sodium formate Nutrition 0.000 claims description 3
- 239000007771 core particle Substances 0.000 claims 1
- 230000001376 precipitating effect Effects 0.000 claims 1
- 238000002156 mixing Methods 0.000 description 20
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 7
- 230000015572 biosynthetic process Effects 0.000 description 7
- 239000011247 coating layer Substances 0.000 description 6
- 238000000151 deposition Methods 0.000 description 5
- 239000002244 precipitate Substances 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 2
- 239000011859 microparticle Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 1
- JJLJMEJHUUYSSY-UHFFFAOYSA-L Copper hydroxide Chemical compound [OH-].[OH-].[Cu+2] JJLJMEJHUUYSSY-UHFFFAOYSA-L 0.000 description 1
- 239000005750 Copper hydroxide Substances 0.000 description 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 229910001956 copper hydroxide Inorganic materials 0.000 description 1
- 229910001431 copper ion Inorganic materials 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000009713 electroplating Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 235000019253 formic acid Nutrition 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000012279 sodium borohydride Substances 0.000 description 1
- 229910000033 sodium borohydride Inorganic materials 0.000 description 1
- -1 sulfuric acid peroxide Chemical class 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- Chemically Coating (AREA)
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Description
なお、この工程でHCHOは炭酸ガス(CO2)まで分解される。
本発明の銅析出法に従って、まず、Cu3000mg/Lの銅めっき廃液に対し、NaBH4を反応液中濃度96mg/L~540mg/L(全銅を還元する還元力の1/4~4/3)添加して、粒径30nmの核となる銅微粒子を形成した。その後、形成した銅微粒子上に銅被覆層を形成し、粒状の銅を形成した。処理開始から粒状の銅を形成するための反応時間は1時間と短かった。また、得られた粒状の銅の含銅率は約70%と高く、有価回収できる対象となることがわかった。
2、3 銅の被覆層
11 銅粒子
21 粒状の銅
31 銅めっき槽
32 配管
33 ポンプ
34 流量計
35 電磁弁
36 配管
41 NaBH4タンク
42 配管
43 ポンプ
44 流量計
51 NaBH4混合槽
52 撹拌機
53 pH計
54 配管
55 ポンプ
56 電磁弁
57 配管
58 ポンプ
61 固液分離装置
71 制御装置
Claims (2)
- 銅めっき廃液から銅を分離回収する銅析出法であって、
銅めっき廃液にNaBH4を添加し、核となる粒径30nm~100nmの微細な銅微粒子を形成し、
銅めっき廃液中のHCHOにより、前記銅微粒子上に銅を析出させて銅粒子を形成し、
前記銅を析出させる反応で生成したHCOONaによって、前記銅粒子上にさらに銅を析出させて粒状の銅を得る。 - 請求項1に記載の銅析出法であって、
前記NaBH4の添加量は、前記銅めっき廃液中に含まれる銅を還元する量の3.3%~10%である。
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CN202010782701.0A CN112342403A (zh) | 2019-08-07 | 2020-08-06 | 从镀铜废液中析出铜的铜析出法和使用其的铜分离回收装置 |
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JP2019145202 | 2019-08-07 | ||
JP2019145202 | 2019-08-07 |
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JP2021023926A JP2021023926A (ja) | 2021-02-22 |
JP7441056B2 true JP7441056B2 (ja) | 2024-02-29 |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009256779A (ja) | 2008-03-27 | 2009-11-05 | Furukawa Electric Co Ltd:The | 銅微粒子分散水溶液の製造方法及び銅微粒子分散水溶液の保管方法 |
JP2010174312A (ja) | 2009-01-28 | 2010-08-12 | Tosoh Corp | 銅微粒子分散体の製造方法 |
JP2014012880A (ja) | 2012-07-05 | 2014-01-23 | National Institute Of Advanced Industrial & Technology | 無電解銅めっき廃液を処理する方法およびその装置 |
JP2017538040A (ja) | 2014-12-16 | 2017-12-21 | アトテック ドイチェランド ゲーエムベーハー | 金属及び金属アロイの無電解めっきのためのめっき浴組成物 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS51139167A (en) * | 1975-02-04 | 1976-12-01 | Hitachi Chem Co Ltd | Method of recovering valiable ingredients from a waste solution of che mcal copper plating |
JPS59101444A (ja) * | 1982-11-30 | 1984-06-12 | Hitachi Condenser Co Ltd | 無電解銅メツキ廃液からedtaを回収する方法及びその装置 |
JPS6174696A (ja) * | 1984-09-18 | 1986-04-16 | Hitachi Plant Eng & Constr Co Ltd | 化学銅めつき廃液からの銅除去方法及び装置 |
IL91653A0 (en) * | 1988-10-11 | 1990-04-29 | Enthone | Waste treatment of metal containing solutions |
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2020
- 2020-01-24 JP JP2020009668A patent/JP7441056B2/ja active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009256779A (ja) | 2008-03-27 | 2009-11-05 | Furukawa Electric Co Ltd:The | 銅微粒子分散水溶液の製造方法及び銅微粒子分散水溶液の保管方法 |
JP2010174312A (ja) | 2009-01-28 | 2010-08-12 | Tosoh Corp | 銅微粒子分散体の製造方法 |
JP2014012880A (ja) | 2012-07-05 | 2014-01-23 | National Institute Of Advanced Industrial & Technology | 無電解銅めっき廃液を処理する方法およびその装置 |
JP2017538040A (ja) | 2014-12-16 | 2017-12-21 | アトテック ドイチェランド ゲーエムベーハー | 金属及び金属アロイの無電解めっきのためのめっき浴組成物 |
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