JP5852916B2 - 貴金属の回収方法 - Google Patents
貴金属の回収方法 Download PDFInfo
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- JP5852916B2 JP5852916B2 JP2012084958A JP2012084958A JP5852916B2 JP 5852916 B2 JP5852916 B2 JP 5852916B2 JP 2012084958 A JP2012084958 A JP 2012084958A JP 2012084958 A JP2012084958 A JP 2012084958A JP 5852916 B2 JP5852916 B2 JP 5852916B2
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- JP
- Japan
- Prior art keywords
- noble metal
- gold
- electrolysis
- aqueous solution
- cathode
- 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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- 238000000034 method Methods 0.000 title claims description 32
- 238000011084 recovery Methods 0.000 title claims description 11
- 239000010970 precious metal Substances 0.000 title claims description 6
- 238000005868 electrolysis reaction Methods 0.000 claims description 79
- 239000010931 gold Substances 0.000 claims description 76
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 75
- 229910052737 gold Inorganic materials 0.000 claims description 75
- 229910000510 noble metal Inorganic materials 0.000 claims description 62
- 239000007864 aqueous solution Substances 0.000 claims description 59
- 230000033116 oxidation-reduction process Effects 0.000 claims description 52
- 229910052709 silver Inorganic materials 0.000 claims description 20
- 239000004332 silver Substances 0.000 claims description 20
- 150000003464 sulfur compounds Chemical class 0.000 claims description 14
- 238000001556 precipitation Methods 0.000 claims description 4
- 239000007789 gas Substances 0.000 description 60
- 239000000243 solution Substances 0.000 description 32
- 238000007747 plating Methods 0.000 description 25
- 210000004027 cell Anatomy 0.000 description 21
- 238000000151 deposition Methods 0.000 description 20
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 19
- 239000002699 waste material Substances 0.000 description 19
- 230000008021 deposition Effects 0.000 description 18
- 239000007788 liquid Substances 0.000 description 16
- 239000002994 raw material Substances 0.000 description 16
- 230000009467 reduction Effects 0.000 description 11
- 230000003247 decreasing effect Effects 0.000 description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 5
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 5
- -1 gold thiosulfate compound Chemical class 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910001220 stainless steel Inorganic materials 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000010948 rhodium Substances 0.000 description 3
- 229910052717 sulfur Inorganic materials 0.000 description 3
- 239000010936 titanium Substances 0.000 description 3
- 229910052719 titanium Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 230000002378 acidificating effect Effects 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- GTKRFUAGOKINCA-UHFFFAOYSA-M chlorosilver;silver Chemical compound [Ag].[Ag]Cl GTKRFUAGOKINCA-UHFFFAOYSA-M 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 229910052697 platinum Inorganic materials 0.000 description 2
- 239000011148 porous material Substances 0.000 description 2
- 229910052703 rhodium Inorganic materials 0.000 description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 2
- 229910052707 ruthenium Inorganic materials 0.000 description 2
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical class [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- DHCDFWKWKRSZHF-UHFFFAOYSA-L thiosulfate(2-) Chemical compound [O-]S([S-])(=O)=O DHCDFWKWKRSZHF-UHFFFAOYSA-L 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- CPDKISYFHRCKRW-UHFFFAOYSA-J [K+].[Au+3].[O-]S([O-])(=O)=S.[O-]S([O-])(=O)=S Chemical compound [K+].[Au+3].[O-]S([O-])(=O)=S.[O-]S([O-])(=O)=S CPDKISYFHRCKRW-UHFFFAOYSA-J 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- GABPAXJCPQEORA-UHFFFAOYSA-K azanium;gold(3+);disulfite Chemical compound [NH4+].[Au+3].[O-]S([O-])=O.[O-]S([O-])=O GABPAXJCPQEORA-UHFFFAOYSA-K 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 150000002344 gold compounds Chemical class 0.000 description 1
- FDWREHZXQUYJFJ-UHFFFAOYSA-M gold monochloride Chemical compound [Cl-].[Au+] FDWREHZXQUYJFJ-UHFFFAOYSA-M 0.000 description 1
- SRCZENKQCOSNAI-UHFFFAOYSA-H gold(3+);trisulfite Chemical class [Au+3].[Au+3].[O-]S([O-])=O.[O-]S([O-])=O.[O-]S([O-])=O SRCZENKQCOSNAI-UHFFFAOYSA-H 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 210000004400 mucous membrane Anatomy 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- AKHNMLFCWUSKQB-UHFFFAOYSA-L sodium thiosulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=S AKHNMLFCWUSKQB-UHFFFAOYSA-L 0.000 description 1
- 235000019345 sodium thiosulphate Nutrition 0.000 description 1
- GGCZERPQGJTIQP-UHFFFAOYSA-N sodium;9,10-dioxoanthracene-2-sulfonic acid Chemical compound [Na+].C1=CC=C2C(=O)C3=CC(S(=O)(=O)O)=CC=C3C(=O)C2=C1 GGCZERPQGJTIQP-UHFFFAOYSA-N 0.000 description 1
- ZWZLRIBPAZENFK-UHFFFAOYSA-J sodium;gold(3+);disulfite Chemical compound [Na+].[Au+3].[O-]S([O-])=O.[O-]S([O-])=O ZWZLRIBPAZENFK-UHFFFAOYSA-J 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 125000004434 sulfur atom Chemical group 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 150000004764 thiosulfuric acid derivatives Chemical class 0.000 description 1
- KRZKNIQKJHKHPL-UHFFFAOYSA-J tripotassium;gold(1+);disulfite Chemical compound [K+].[K+].[K+].[Au+].[O-]S([O-])=O.[O-]S([O-])=O KRZKNIQKJHKHPL-UHFFFAOYSA-J 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- 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
Description
実験例1では気体の供給の有無による酸化還元電位の変化、及び水溶性硫黄化合物と金を含む水性溶液(以下、原料溶液という)の安定性(陰極以外の部分への金の析出の有無)について調べた。
原料溶液には、亜硫酸塩を含む金メッキ廃液(3L、pH8、金含有量9g/L)を用いた。金の回収に用いる回収装置(容量5L)として図1に示す電解槽を用いた。陽極はステンレス製の電極を2枚用い、陰極はチタン製の電極を用いた。各電極の大きさは、横20cm×縦10cm×厚み2mmである。陽極は陰極を挟むようにして陰極の両側に配置した。また電解槽中央付近の底部に気体(空気)導入用の棒状の散気管(直径2cm、長さ20cm、気体供給口の各孔径20μm)を配置した。
No.1−2では、散気管から空気を供給しなかった以外はNo.1−1と同じ条件で亜硫酸塩を含む金メッキ廃液の電気分解を15時間行った。
空気の供給量(実験中は一定の供給量を維持)を表2に示すように変更した以外は、実験例1のNo.1−1と同じ条件で亜硫酸塩を含む金メッキ廃液の電気分解を行った。電気分解開始から12時間経過した時点で、陰極以外の部分の金の析出の有無を確認した。結果を表2に示す。なお、No.2−4は上記No.1−1である。
pHの異なる亜硫酸塩を含む金メッキ廃液を用いた以外は、実験例1のNo.1−1と同じ条件で電気分解を行った(No.3−1、3−3)。なお、No.3−2は実験例1のNo.1−1であり、No.3−4はNo.1−2である。電気分解開始時(0時間)と電気分解開始後12時間の金濃度と酸化還元電位を調べると共に、電気分解開始後12時間経過した時点で陰極以外での金の析出の有無を確認した。結果を表3に示す。
散気管を球状の散気管(直径2.5cm、気体供給口の各孔径20μm)に変更すると共に、散気管を図2に示すように電解槽端側、かつ電解槽内の原料溶液の深さに対して1/2程度の高さに設置した。なお、散気管から供給された空気は直接電極に当たらないようにすると共に、電解槽に設置した散気管と反対側の側面に循環ポンプを設けた以外は実験例1のNo.1−1と同じ条件で亜硫酸塩を含む金メッキ廃液の電気分解を行った。実験例1と同様にして金濃度と酸化還元電位を測定すると共に、金の析出の有無を目視で観察した。結果を表4に示す。
電解槽に供給する気体を空気から窒素に変更した以外は実験例1のNo.1−1と同じ条件で電気分解を行った。結果を表5に示す。
No.6−1
亜硫酸塩を含む金メッキ廃液をチオ硫酸塩を含む銀廃液(3L、pH5、銀濃度3g/L)に変更すると共に、電解槽への空気の導入開始を酸化還元電位が−400mV付近(電気分解開始後1時間経過した時点)まで低下してから行った以外は実験例1のNo.1−1と同じ条件で電気分解を行った。結果を表6に示す。
電解槽へ空気を供給しなかった以外は、No.6−1と同じ条件で電気分解を行った。結果を表6に示す。
Claims (6)
- 水溶性硫黄化合物と貴金属とを含む水性溶液から電気分解法によって貴金属を回収するにあたり、電気分解中の前記水性溶液中に気体を供給し、前記水性溶液の酸化還元電位が−500mV〜+100mVとなるように制御することを特徴とする貴金属の回収方法。
- 前記水性溶液中に供給する前記気体の平均供給量を電解電流1Aあたり0.1L/分〜10L/分とするものである請求項1に記載の貴金属の回収方法。
- 前記貴金属は、金、または銀である請求項1または2に記載の貴金属の回収方法。
- 前記水性溶液のpHは4〜10である請求項1〜3のいずれかに記載の貴金属の回収方法。
- 前記水性溶液の前記酸化還元電位を制御して陰極以外での貴金属の析出を防止するものである請求項1〜4のいずれかに記載の貴金属の回収方法。
- 前記貴金属は陰極表面に析出させて回収するものである請求項1〜5のいずれかに記載の貴金属の回収方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012084958A JP5852916B2 (ja) | 2012-04-03 | 2012-04-03 | 貴金属の回収方法 |
CN201280071376.0A CN104169473B (zh) | 2012-04-03 | 2012-04-26 | 贵金属的回收方法 |
PCT/JP2012/061237 WO2013150664A1 (ja) | 2012-04-03 | 2012-04-26 | 貴金属の回収方法 |
TW102100073A TWI443227B (zh) | 2012-04-03 | 2013-01-03 | Precious metal recycling method |
HK15101584.3A HK1201082A1 (en) | 2012-04-03 | 2015-02-13 | Method for recovering precious metal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2012084958A JP5852916B2 (ja) | 2012-04-03 | 2012-04-03 | 貴金属の回収方法 |
Publications (2)
Publication Number | Publication Date |
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JP2013213267A JP2013213267A (ja) | 2013-10-17 |
JP5852916B2 true JP5852916B2 (ja) | 2016-02-03 |
Family
ID=49300181
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2012084958A Active JP5852916B2 (ja) | 2012-04-03 | 2012-04-03 | 貴金属の回収方法 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP5852916B2 (ja) |
CN (1) | CN104169473B (ja) |
HK (1) | HK1201082A1 (ja) |
TW (1) | TWI443227B (ja) |
WO (1) | WO2013150664A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113621995B (zh) * | 2021-07-16 | 2023-12-26 | 武汉理工大学 | 一种基于电化学联合催化技术回收硫代硫酸盐浸出液中贵金属的方法 |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1272231A (en) * | 1968-12-09 | 1972-04-26 | B J S Electro Plating Company | Silver electrolytes |
JPS57207190A (en) * | 1981-06-15 | 1982-12-18 | Nippon Mining Co Ltd | Ruthenium plating method |
GB8605278D0 (en) * | 1986-03-04 | 1986-04-09 | Fixersave Ltd | Photographic processing |
JP2676644B2 (ja) * | 1990-04-27 | 1997-11-17 | 富士写真フイルム株式会社 | 写真処理液の銀回収方法及び装置 |
JPH06256988A (ja) * | 1993-03-02 | 1994-09-13 | Japan Energy Corp | ルテニウムめっき方法 |
JP2745449B2 (ja) * | 1994-07-07 | 1998-04-28 | 株式会社ミカサ | 水の酸化還元電位制御装置 |
FI113667B (fi) * | 2002-04-23 | 2004-05-31 | Outokumpu Oy | Menetelmä kullan talteenottamiseksi |
JP4699105B2 (ja) * | 2005-06-24 | 2011-06-08 | アサヒプリテック株式会社 | 金の回収方法および装置 |
JP4397961B1 (ja) * | 2008-12-10 | 2010-01-13 | 小島化学薬品株式会社 | 銀の電解回収装置 |
TWI412628B (zh) * | 2008-12-10 | 2013-10-21 | Kojima Chemicals Co Ltd | Gold or silver electrolytic recovery unit |
JP2011105969A (ja) * | 2009-11-13 | 2011-06-02 | Sumitomo Metal Mining Co Ltd | 含銅硫化物からの銀の回収方法 |
CN101838828B (zh) * | 2010-03-25 | 2011-11-30 | 福州大学 | 一种无氰镀金电镀液 |
-
2012
- 2012-04-03 JP JP2012084958A patent/JP5852916B2/ja active Active
- 2012-04-26 WO PCT/JP2012/061237 patent/WO2013150664A1/ja active Application Filing
- 2012-04-26 CN CN201280071376.0A patent/CN104169473B/zh active Active
-
2013
- 2013-01-03 TW TW102100073A patent/TWI443227B/zh active
-
2015
- 2015-02-13 HK HK15101584.3A patent/HK1201082A1/xx unknown
Also Published As
Publication number | Publication date |
---|---|
CN104169473A (zh) | 2014-11-26 |
TWI443227B (zh) | 2014-07-01 |
CN104169473B (zh) | 2017-03-01 |
HK1201082A1 (en) | 2015-08-21 |
TW201341595A (zh) | 2013-10-16 |
WO2013150664A1 (ja) | 2013-10-10 |
JP2013213267A (ja) | 2013-10-17 |
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R250 | Receipt of annual fees |
Free format text: JAPANESE INTERMEDIATE CODE: R250 |