JP4478585B2 - 飛灰からの有価物回収方法 - Google Patents
飛灰からの有価物回収方法 Download PDFInfo
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- JP4478585B2 JP4478585B2 JP2005009713A JP2005009713A JP4478585B2 JP 4478585 B2 JP4478585 B2 JP 4478585B2 JP 2005009713 A JP2005009713 A JP 2005009713A JP 2005009713 A JP2005009713 A JP 2005009713A JP 4478585 B2 JP4478585 B2 JP 4478585B2
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- Prior art keywords
- zinc
- fly ash
- copper
- lead
- leaching
- 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.)
- Expired - Lifetime
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- 239000010881 fly ash Substances 0.000 title claims description 40
- 239000000463 material Substances 0.000 title claims description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 50
- 229910052725 zinc Inorganic materials 0.000 claims description 50
- 239000011701 zinc Substances 0.000 claims description 50
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 40
- 229910052802 copper Inorganic materials 0.000 claims description 40
- 239000010949 copper Substances 0.000 claims description 40
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 238000002386 leaching Methods 0.000 claims description 17
- 229910052793 cadmium Inorganic materials 0.000 claims description 15
- 229910052785 arsenic Inorganic materials 0.000 claims description 14
- 239000002440 industrial waste Substances 0.000 claims description 14
- 239000003795 chemical substances by application Substances 0.000 claims description 13
- 238000000034 method Methods 0.000 claims description 12
- 150000002739 metals Chemical class 0.000 claims description 10
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 claims description 9
- 230000008018 melting Effects 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 8
- 239000000706 filtrate Substances 0.000 claims description 6
- 230000033116 oxidation-reduction process Effects 0.000 claims description 4
- 150000003839 salts Chemical class 0.000 claims description 4
- HKZLPVFGJNLROG-UHFFFAOYSA-M silver monochloride Chemical class [Cl-].[Ag+] HKZLPVFGJNLROG-UHFFFAOYSA-M 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 150000003568 thioethers Chemical class 0.000 claims 1
- 239000011133 lead Substances 0.000 description 30
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 21
- 239000002994 raw material Substances 0.000 description 17
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 11
- 239000011787 zinc oxide Substances 0.000 description 11
- 235000014692 zinc oxide Nutrition 0.000 description 11
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 10
- HYHCSLBZRBJJCH-UHFFFAOYSA-M sodium hydrosulfide Chemical compound [Na+].[SH-] HYHCSLBZRBJJCH-UHFFFAOYSA-M 0.000 description 7
- 238000005987 sulfurization reaction Methods 0.000 description 7
- UGZADUVQMDAIAO-UHFFFAOYSA-L zinc hydroxide Chemical compound [OH-].[OH-].[Zn+2] UGZADUVQMDAIAO-UHFFFAOYSA-L 0.000 description 7
- 229940007718 zinc hydroxide Drugs 0.000 description 7
- 229910021511 zinc hydroxide Inorganic materials 0.000 description 7
- -1 ferrous metals Chemical class 0.000 description 6
- 229910001385 heavy metal Inorganic materials 0.000 description 6
- PIJPYDMVFNTHIP-UHFFFAOYSA-L lead sulfate Chemical compound [PbH4+2].[O-]S([O-])(=O)=O PIJPYDMVFNTHIP-UHFFFAOYSA-L 0.000 description 5
- 239000002699 waste material Substances 0.000 description 5
- 239000002956 ash Substances 0.000 description 4
- 239000000428 dust Substances 0.000 description 4
- 239000012535 impurity Substances 0.000 description 4
- 238000011084 recovery Methods 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 3
- 239000003513 alkali Substances 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 150000002013 dioxins Chemical class 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000005486 sulfidation Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000013040 rubber vulcanization Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 150000004763 sulfides Chemical class 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000004056 waste incineration 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
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/82—Recycling of waste of electrical or electronic equipment [WEEE]
Landscapes
- Processing Of Solid Wastes (AREA)
- Manufacture And Refinement Of Metals (AREA)
Description
JIS K1410 亜鉛ハンドブック(改訂版)
以下本発明を示す。
(1)産業廃棄物の焼却および又は溶融処理によって発生する焼却飛灰であり、且つAs、Cdをも含む飛灰の処理方法であって、
該飛灰を硫酸酸性液によりpHを1.0〜3.0に調整しながら浸出を行い、
その後固液分離して、鉛を含む浸出残渣(鉛残渣)と、銅と亜鉛および随伴する金属類と塩類を含むろ液に分離する第一工程と、
得られたろ液に硫化剤を添加して、飽和塩化銀電極基準の酸化還元電位(ORP)を0から−50mVに制御し
浸出された銅と随伴するAs、Cdを含む金属類を硫化物として析出させ固液分離する第二工程と、
残液にアルカリ剤を添加してpHを10〜11に調整して固液分離し、亜鉛を水酸化物として析出させ塩類を含むろ液とに分離する第三工程と
からなる飛灰からの有価物回収方法。
銅を含有する産業廃棄物にはカーシュレッダーダスト(ASR)のように比較的鉛、亜鉛、銅以外の非鉄金属含有量の少ないものから、電子部品屑のように鉛、亜鉛、銅以外にカドミウム、砒素等の含有量の多いものまで様々である。
本発明は、飛灰中のそれら元素の含有量には影響を受けず、鉛、亜鉛、銅を資源として回収できるところに特徴がある。
この試験結果から硫酸浸出による鉛、亜鉛、銅の浸出率は表3の通りとなり、鉛と他の金属が分離できることがわかった。
図2に示すデータからORPが0mV以下になると液中に銅がほとんど存在せず、それに対して亜鉛濃度はほとんど低下していないことがわかった。ORPを0mV以下に制御しながら硫化処理した時の液組成変化を表4に示す。
図3のデータからORPが0mV以下になると液中に銅、カドミウム、砒素がほとんど存在せず、それに対して亜鉛濃度は多少低下するものの液中にかなり残存していることから亜鉛と他の金属が本方法で分離できることがわかった。ORPを0mV以下に制御しながら硫化処理した時の液組成変化を表10に示す。
Claims (1)
- 産業廃棄物の焼却および又は溶融処理によって発生する焼却飛灰であり、且つAs、Cdをも含む飛灰の処理方法であって、
該飛灰を硫酸酸性液によりpHを1.0〜3.0に調整しながら浸出を行い、
その後固液分離して、鉛を含む浸出残渣(鉛残渣)と、銅と亜鉛および随伴する金属類と塩類を含むろ液に分離する第一工程と、
得られたろ液に硫化剤を添加して、飽和塩化銀電極基準の酸化還元電位(ORP)を0から−50mVに制御し
浸出された銅と随伴するAs、Cdを含む金属類を硫化物として析出させ固液分離する第二工程と、
残液にアルカリ剤を添加してpHを10〜11に調整して固液分離し、亜鉛を水酸化物として析出させ塩類を含むろ液とに分離する第三工程と
からなることを特徴とする飛灰からの有価物回収方法。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2005009713A JP4478585B2 (ja) | 2005-01-17 | 2005-01-17 | 飛灰からの有価物回収方法 |
Applications Claiming Priority (1)
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JP2005009713A JP4478585B2 (ja) | 2005-01-17 | 2005-01-17 | 飛灰からの有価物回収方法 |
Publications (2)
Publication Number | Publication Date |
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JP2006198448A JP2006198448A (ja) | 2006-08-03 |
JP4478585B2 true JP4478585B2 (ja) | 2010-06-09 |
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JP2005009713A Expired - Lifetime JP4478585B2 (ja) | 2005-01-17 | 2005-01-17 | 飛灰からの有価物回収方法 |
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Families Citing this family (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4216307B2 (ja) | 2006-09-27 | 2009-01-28 | 日鉱金属株式会社 | 電解沈殿銅の処理方法 |
JP5084272B2 (ja) * | 2007-01-11 | 2012-11-28 | 太平洋セメント株式会社 | 亜鉛を含む重金属類及び塩素を含有する物質の処理方法 |
JP2009242223A (ja) | 2007-07-13 | 2009-10-22 | Dowa Metals & Mining Co Ltd | 三酸化二砒素の処理方法 |
JP2009242935A (ja) | 2007-07-13 | 2009-10-22 | Dowa Metals & Mining Co Ltd | 砒素を含むもののアルカリ処理方法 |
JP5188297B2 (ja) * | 2007-07-13 | 2013-04-24 | Dowaメタルマイン株式会社 | 砒素を含む非鉄製錬中間産物の処理方法 |
JP5188296B2 (ja) | 2007-07-13 | 2013-04-24 | Dowaメタルマイン株式会社 | 銅砒素化合物の処理方法 |
JP5188298B2 (ja) | 2007-08-09 | 2013-04-24 | Dowaメタルマイン株式会社 | 砒素を含む非鉄製錬中間産物の処理方法 |
JP5046306B2 (ja) * | 2008-08-27 | 2012-10-10 | 太平洋セメント株式会社 | カルシウム成分及び鉛成分を含有する微粉末の処理方法並びに処理システム |
WO2010074516A2 (ko) | 2008-12-23 | 2010-07-01 | 주식회사 포스코 | 이차 더스트를 이용한 고 순도 산화아연의 제조방법 |
JP4921529B2 (ja) * | 2009-07-29 | 2012-04-25 | パンパシフィック・カッパー株式会社 | 銅転炉ダストの処理方法 |
JP5718590B2 (ja) * | 2010-06-29 | 2015-05-13 | メタウォーター株式会社 | 汚泥焼却灰の処理方法および処理装置 |
CN103451439B (zh) * | 2013-09-11 | 2015-11-25 | 云南永昌铅锌股份有限公司 | 硫酸锌溶液净化后渣的处理方法 |
CN105567984B (zh) * | 2016-01-18 | 2017-07-07 | 中南大学 | 一种铜烟灰控电位选择分离的方法 |
CN110964915B (zh) * | 2019-12-25 | 2021-07-30 | 北京工业大学 | 一种废线路板裂解渣与冶炼烟灰协同处置的方法 |
CN113913624A (zh) * | 2020-07-10 | 2022-01-11 | 西南科技大学 | 一种资源回收再生铜熔炼收尘灰中铜的方法 |
CN114807618B (zh) * | 2022-06-27 | 2022-11-01 | 长沙华时捷环保科技发展股份有限公司 | 一种金矿高温氯化焙烧烟气洗涤液中各有价金属的综合回收工艺 |
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2005
- 2005-01-17 JP JP2005009713A patent/JP4478585B2/ja not_active Expired - Lifetime
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