JP4403259B2 - 白金族元素の回収方法 - Google Patents
白金族元素の回収方法 Download PDFInfo
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- JP4403259B2 JP4403259B2 JP2004085030A JP2004085030A JP4403259B2 JP 4403259 B2 JP4403259 B2 JP 4403259B2 JP 2004085030 A JP2004085030 A JP 2004085030A JP 2004085030 A JP2004085030 A JP 2004085030A JP 4403259 B2 JP4403259 B2 JP 4403259B2
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- Prior art keywords
- platinum group
- gold
- group element
- solution
- electrolysis
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- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 title claims description 155
- 238000000034 method Methods 0.000 title claims description 41
- 229910052737 gold Inorganic materials 0.000 claims description 108
- 239000010931 gold Substances 0.000 claims description 108
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 103
- 238000005868 electrolysis reaction Methods 0.000 claims description 66
- 238000002386 leaching Methods 0.000 claims description 45
- 229910052709 silver Inorganic materials 0.000 claims description 38
- 239000004332 silver Substances 0.000 claims description 38
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 37
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 35
- 229910017604 nitric acid Inorganic materials 0.000 claims description 35
- 238000005185 salting out Methods 0.000 claims description 24
- 239000000463 material Substances 0.000 claims description 19
- 238000011084 recovery Methods 0.000 claims description 19
- 239000003638 chemical reducing agent Substances 0.000 claims description 18
- 239000007788 liquid Substances 0.000 claims description 17
- 238000009938 salting Methods 0.000 claims description 16
- 229910021607 Silver chloride Inorganic materials 0.000 claims description 11
- 238000006386 neutralization reaction Methods 0.000 claims description 11
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical compound [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims description 11
- 239000000243 solution Substances 0.000 description 71
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 52
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 30
- 229910052763 palladium Inorganic materials 0.000 description 15
- 229910052697 platinum Inorganic materials 0.000 description 14
- -1 chlorine ions Chemical class 0.000 description 13
- 229910052802 copper Inorganic materials 0.000 description 12
- 239000010949 copper Substances 0.000 description 12
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 11
- 239000002244 precipitate Substances 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 8
- 239000002184 metal Substances 0.000 description 8
- 230000001603 reducing effect Effects 0.000 description 8
- QZPSXPBJTPJTSZ-UHFFFAOYSA-N aqua regia Chemical compound Cl.O[N+]([O-])=O QZPSXPBJTPJTSZ-UHFFFAOYSA-N 0.000 description 7
- 235000003891 ferrous sulphate Nutrition 0.000 description 7
- 239000011790 ferrous sulphate Substances 0.000 description 7
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 7
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 7
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 5
- 239000000460 chlorine Substances 0.000 description 5
- 229910052801 chlorine Inorganic materials 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- 229910002651 NO3 Inorganic materials 0.000 description 4
- 239000011780 sodium chloride Substances 0.000 description 4
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 150000002343 gold Chemical class 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 235000011121 sodium hydroxide Nutrition 0.000 description 3
- 238000003756 stirring Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- MOOAHMCRPCTRLV-UHFFFAOYSA-N boron sodium Chemical compound [B].[Na] MOOAHMCRPCTRLV-UHFFFAOYSA-N 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 230000003472 neutralizing effect Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 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 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010946 fine silver Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- 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
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- Manufacture And Refinement Of Metals (AREA)
Description
図3の銀電解(ステップS100)において生じた銀電解スライムには、金、銀、及び白金族元素(白金やパラジウム等)が濃縮されて含有されている。そこで、この銀電解スライムを硝酸浸出処理して(ステップS101)、銀電解スライム中の銀及び白金族元素を浸出液に浸出させ、浸出残渣から得られた金電解用アノードを用いて、金電解(ステップS102)により金を精製している。
更に、上述の背景技術では、塩析後液を還元した(ステップS105)後に得られた沈殿物へ王水を添加して(ステップS106)これを溶解し、さらに、蒸発乾固(ステップS107)と塩酸溶解(ステップS108)とにより、後工程で問題となる硝酸の除去をおこなっていた。そして、この脱硝工程は、場合によっては繰り返し行う必要もあり、これらの王水処理と脱硝工程とに長時間を要していた。
図1は、本発明に係る白金族元素の回収方法における一実施の形態を示すフローチャートである。
例えば、銀電解スライムを硝酸浸出した浸出液を塩析するのに、塩化ナトリウムまたは塩酸などの塩素を含む物質を添加して実施し、この塩析により塩化銀を除去した塩析後液をアルカリ性とした後に、還元剤を添加して中和還元し、得られた白金族元素含有物から、上述の実施の形態と同様にして白金族元素を回収してもよい。
Claims (3)
- 金、銀及び白金族元素を含有する被処理物を硝酸浸出し、この浸出残渣から得られる金電解用アノードを用いて金電解により金を析出して精製し、上記金電解工程の金電解後液と、上記硝酸浸出工程の浸出液とにそれぞれ含有された白金族元素を回収する白金族元素の回収方法であって、
上記金電解後液に還元剤を添加して金を還元し、還元金として金を回収すると共に、還元後液に含有された白金族元素を回収することを特徴とする白金族元素の回収方法。 - 上記金電解後液から還元金を回収した還元後液に、硝酸浸出工程の浸出液を混合して塩析処理し、塩化銀として銀を回収すると共に、白金族元素が含有された塩析後液から白金族元素を回収することを特徴とする請求項1に記載の白金族元素の回収方法。
- 上記塩析処理により塩化銀を回収した塩析後液をアルカリ性とし、その後に還元剤を添加して中和還元し、この中和還元により得られた白金族元素含有物から白金族元素を回収することを特徴とする請求項2に記載の白金族元素の回収方法。
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JP2004085030A JP4403259B2 (ja) | 2004-03-23 | 2004-03-23 | 白金族元素の回収方法 |
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JP2004085030A JP4403259B2 (ja) | 2004-03-23 | 2004-03-23 | 白金族元素の回収方法 |
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JP2005272887A JP2005272887A (ja) | 2005-10-06 |
JP4403259B2 true JP4403259B2 (ja) | 2010-01-27 |
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JP2004085030A Expired - Lifetime JP4403259B2 (ja) | 2004-03-23 | 2004-03-23 | 白金族元素の回収方法 |
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Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5132919B2 (ja) * | 2006-11-17 | 2013-01-30 | 国立大学法人九州大学 | 銀の回収方法 |
JP5327420B2 (ja) * | 2007-12-12 | 2013-10-30 | 三菱マテリアル株式会社 | 白金の回収方法 |
JP5220143B2 (ja) | 2011-02-15 | 2013-06-26 | Jx日鉱日石金属株式会社 | 白金族含有溶液からのIrの回収方法 |
CN106967886B (zh) * | 2017-03-14 | 2018-09-14 | 太原瑞麟贵金属回收有限公司 | 一种硝酸装置中在线清洗回收贵金属的方法 |
CN112813263A (zh) * | 2020-12-09 | 2021-05-18 | 深圳市环保科技集团有限公司 | 一种王水体系退镀废液的处理方法 |
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- 2004-03-23 JP JP2004085030A patent/JP4403259B2/ja not_active Expired - Lifetime
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