JP2022107343A - クロム回収方法 - Google Patents
クロム回収方法 Download PDFInfo
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- JP2022107343A JP2022107343A JP2021002227A JP2021002227A JP2022107343A JP 2022107343 A JP2022107343 A JP 2022107343A JP 2021002227 A JP2021002227 A JP 2021002227A JP 2021002227 A JP2021002227 A JP 2021002227A JP 2022107343 A JP2022107343 A JP 2022107343A
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- Prior art keywords
- chromium
- slag
- voltage
- stainless
- electrodes
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- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 title claims abstract description 70
- 229910052804 chromium Inorganic materials 0.000 title claims abstract description 70
- 239000011651 chromium Substances 0.000 title claims abstract description 70
- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000011084 recovery Methods 0.000 title claims abstract description 23
- 239000002893 slag Substances 0.000 claims abstract description 62
- 239000002245 particle Substances 0.000 claims abstract description 56
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 239000000696 magnetic material Substances 0.000 claims abstract description 13
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910000423 chromium oxide Inorganic materials 0.000 claims abstract description 12
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000000463 material Substances 0.000 claims description 12
- 238000010298 pulverizing process Methods 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 abstract description 16
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 16
- 238000007885 magnetic separation Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 18
- 239000000126 substance Substances 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 9
- 230000005484 gravity Effects 0.000 description 6
- 238000009628 steelmaking Methods 0.000 description 6
- 239000006249 magnetic particle Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000006148 magnetic separator Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 229910017060 Fe Cr Inorganic materials 0.000 description 1
- 229910002544 Fe-Cr Inorganic materials 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000000306 component Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000008151 electrolyte solution Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- -1 for example Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000004611 spectroscopical analysis Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Images
Classifications
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- 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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- Disintegrating Or Milling (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
実施例で用いた被粉砕物は、酸化クロム成分が1.64重量%、酸化鉄成分が3.81重量%の組成からなる重量が50gのステンレススラグである。
電気パルス粉砕装置1の構成は前記の通りであるが、本実施例においては、極間距離を40mm、印加電圧を180kV、電圧パルス照射回数を250回の条件にそれぞれ設定した。
処理槽10内には液体として略3.0Lの水道水で満たし、液体の導電率は167.3mS/m以下である。
10 処理槽
20 電圧パルス印加装置
30 電極
30a 負極
30b 正極
40 配線
Claims (7)
- 酸化クロム成分が1.0重量%以上で酸化鉄成分が2.0重量%以上であるステンレススラグを電圧印加用の液体に浸漬して一対の電極間に設置する工程と、
前記電極間に所定電圧のパルス電圧を印加して前記ステンレススラグを粉砕する工程と、
前記ステンレススラグを粉砕して得られる粉砕物から、所定濃度以上のクロムを含有する粉砕物を選別する工程と、を備える
クロム回収方法。 - 前記粉砕物を選別する工程は、
前記粉砕物を磁力選別して、磁着物と非磁着物に分別する工程と、
前記磁着物から所定濃度以上のクロムを含有する粉砕物を選別する工程と、を有する
請求項1に記載のクロム回収方法。 - 前記電極間の距離が略10mm~40mmの範囲であり、
前記パルス電圧は、電圧が略100kV~200kV、印加回数が50回~1000回である
請求項1または請求項2に記載のクロム回収方法。 - 前記粉砕物の平均粒径が1mm~5mmである
請求項1から請求項3の何れか一項に記載のクロム回収方法。 - 前記電圧印加用の液体の導電率が略400mS/m以下であり、より好ましくは略200mS/s以下である
請求項1から請求項4の何れか一項に記載のクロム回収方法。 - 所定の酸化物成分を含むステンレススラグを電圧印加用の液体に浸漬して一対の電極間に設置する工程と、
前記電極間に所定電圧のパルス電圧を印加して前記ステンレススラグを粉砕する工程と、
前記ステンレススラグを粉砕して得られる粉砕物から、所定濃度以上のクロムを含有する粉砕物を選別する工程と、を備える
クロム回収方法。 - 所定の酸化物成分を含むステンレススラグを電圧印加用の液体に浸漬して一対の電極間に設置する工程と、
前記電極間に所定電圧のパルス電圧を印加して前記ステンレススラグを粉砕する工程と、
前記ステンレススラグを粉砕して得られる粉砕物を磁力選別して、磁着物と非磁着物に分別する工程と、
前記磁着物から所定濃度以上のクロムを含有する粉砕物を選別する工程と、を備える
クロム回収方法。
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JP2021002227A JP6961275B1 (ja) | 2021-01-08 | 2021-01-08 | クロム回収方法 |
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JP2022107343A true JP2022107343A (ja) | 2022-07-21 |
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Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007138209A (ja) * | 2005-11-16 | 2007-06-07 | Jfe Steel Kk | クロム含有鋼精錬スラグの分離方法及び再利用方法 |
JP2007284727A (ja) * | 2006-04-13 | 2007-11-01 | Nippon Steel Corp | 含クロムスラグからのクロム回収方法 |
JP2017136516A (ja) * | 2016-02-01 | 2017-08-10 | 三菱電機株式会社 | 分解処理装置および分解処理方法 |
WO2018232438A1 (en) * | 2017-06-21 | 2018-12-27 | The University Of Queensland | INTEGRATED SEPARATOR SYSTEM AND METHOD FOR PRECONCENTRATION AND PRETREATMENT OF MATERIAL |
JP2019527028A (ja) * | 2016-08-31 | 2019-09-19 | ゼルフラーク アクチエンゲゼルシャフトselFrag AG | 高電圧パルスシステムを動作させる方法 |
-
2021
- 2021-01-08 JP JP2021002227A patent/JP6961275B1/ja active Active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2007138209A (ja) * | 2005-11-16 | 2007-06-07 | Jfe Steel Kk | クロム含有鋼精錬スラグの分離方法及び再利用方法 |
JP2007284727A (ja) * | 2006-04-13 | 2007-11-01 | Nippon Steel Corp | 含クロムスラグからのクロム回収方法 |
JP2017136516A (ja) * | 2016-02-01 | 2017-08-10 | 三菱電機株式会社 | 分解処理装置および分解処理方法 |
JP2019527028A (ja) * | 2016-08-31 | 2019-09-19 | ゼルフラーク アクチエンゲゼルシャフトselFrag AG | 高電圧パルスシステムを動作させる方法 |
WO2018232438A1 (en) * | 2017-06-21 | 2018-12-27 | The University Of Queensland | INTEGRATED SEPARATOR SYSTEM AND METHOD FOR PRECONCENTRATION AND PRETREATMENT OF MATERIAL |
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