JP5799580B2 - 磁力選別機、磁性不純物の除去方法及びリチウムイオン二次電池の製造方法 - Google Patents
磁力選別機、磁性不純物の除去方法及びリチウムイオン二次電池の製造方法 Download PDFInfo
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- JP5799580B2 JP5799580B2 JP2011115229A JP2011115229A JP5799580B2 JP 5799580 B2 JP5799580 B2 JP 5799580B2 JP 2011115229 A JP2011115229 A JP 2011115229A JP 2011115229 A JP2011115229 A JP 2011115229A JP 5799580 B2 JP5799580 B2 JP 5799580B2
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- 239000012535 impurity Substances 0.000 title claims description 62
- 239000006148 magnetic separator Substances 0.000 title claims description 46
- 238000000034 method Methods 0.000 title claims description 16
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 title claims description 12
- 229910001416 lithium ion Inorganic materials 0.000 title claims description 12
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 239000000843 powder Substances 0.000 claims description 66
- 239000003575 carbonaceous material Substances 0.000 claims description 8
- 238000007885 magnetic separation Methods 0.000 claims description 5
- 150000002642 lithium compounds Chemical class 0.000 claims description 4
- 239000011230 binding agent Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 7
- -1 iron ions Chemical class 0.000 description 7
- 239000000203 mixture Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052742 iron Inorganic materials 0.000 description 5
- 229910052744 lithium Inorganic materials 0.000 description 5
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000000696 magnetic material Substances 0.000 description 4
- 230000000452 restraining effect Effects 0.000 description 4
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 3
- 239000008151 electrolyte solution Substances 0.000 description 3
- YEJRWHAVMIAJKC-UHFFFAOYSA-N 4-Butyrolactone Chemical compound O=C1CCCO1 YEJRWHAVMIAJKC-UHFFFAOYSA-N 0.000 description 2
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- OIFBSDVPJOWBCH-UHFFFAOYSA-N Diethyl carbonate Chemical compound CCOC(=O)OCC OIFBSDVPJOWBCH-UHFFFAOYSA-N 0.000 description 1
- XTHFKEDIFFGKHM-UHFFFAOYSA-N Dimethoxyethane Chemical compound COCCOC XTHFKEDIFFGKHM-UHFFFAOYSA-N 0.000 description 1
- KMTRUDSVKNLOMY-UHFFFAOYSA-N Ethylene carbonate Chemical compound O=C1OCCO1 KMTRUDSVKNLOMY-UHFFFAOYSA-N 0.000 description 1
- 229910015015 LiAsF 6 Inorganic materials 0.000 description 1
- 229910013063 LiBF 4 Inorganic materials 0.000 description 1
- 229910013684 LiClO 4 Inorganic materials 0.000 description 1
- 229910012851 LiCoO 2 Inorganic materials 0.000 description 1
- 229910015643 LiMn 2 O 4 Inorganic materials 0.000 description 1
- 229910013290 LiNiO 2 Inorganic materials 0.000 description 1
- 229910013870 LiPF 6 Inorganic materials 0.000 description 1
- 229910012424 LiSO 3 Inorganic materials 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
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- 229910021383 artificial graphite Inorganic materials 0.000 description 1
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- 238000007664 blowing Methods 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- IEJIGPNLZYLLBP-UHFFFAOYSA-N dimethyl carbonate Chemical compound COC(=O)OC IEJIGPNLZYLLBP-UHFFFAOYSA-N 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910003002 lithium salt Inorganic materials 0.000 description 1
- 159000000002 lithium salts Chemical class 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 229910021382 natural graphite Inorganic materials 0.000 description 1
- 229910001172 neodymium magnet Inorganic materials 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
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- RUOJZAUFBMNUDX-UHFFFAOYSA-N propylene carbonate Chemical compound CC1COC(=O)O1 RUOJZAUFBMNUDX-UHFFFAOYSA-N 0.000 description 1
- 230000001846 repelling effect Effects 0.000 description 1
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- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/28—Magnetic plugs and dipsticks
- B03C1/284—Magnetic plugs and dipsticks with associated cleaning means, e.g. retractable non-magnetic sleeve
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/02—Magnetic separation acting directly on the substance being separated
- B03C1/28—Magnetic plugs and dipsticks
- B03C1/288—Magnetic plugs and dipsticks disposed at the outer circumference of a recipient
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/20—Magnetic separation whereby the particles to be separated are in solid form
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C2201/00—Details of magnetic or electrostatic separation
- B03C2201/28—Parts being easily removable for cleaning purposes
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- Battery Electrode And Active Subsutance (AREA)
Description
しかし、スラリー状混合物に含まれる金属不純物は、管路内部の側壁の一部にしか捕集されず、また管路内には突起が互い違いに配置されているため、スラリー状混合物の磁力選別には時間が掛かる。
また、拘束部材により同極の磁石片で挟まれた継鉄部分が磁力の強い磁極となるため、磁極を中心に粉体に含まれた磁性不純物が吸着される。また、磁極の位置は磁石片と継鉄によって自由に決めることができる。
さらに、継鉄の位置が、粉体の流れる方向に対してずらして配置されているため、流路を流れる粉体が磁極となる継鉄に接触する頻度を高めることができる。
ここで、突壁16を構成する上斜面16A及び下斜面16Bの傾斜角度は特定されないが、上斜面16Aと下斜面16Bとがなす角度が急峻であると、流路18を流れる粉体が流路内に滞りやすくなり、処理効率が悪くなる。
本発明の効果を確かめるために、本発明者は、本発明に係る磁力選別機10の一例を用いて、カーボン粉に含まれる磁性不純物の分離を行った。
12 筐体
14 棒状磁性体
16 突壁
18 流路
20 磁石片
22 継鉄
24 鞘管
28 ポンプ(第1の吸引手段)
44 ポンプ(第2の吸引手段)
62 シャフト(拘束部材)
72 エア噴出孔(エア噴出部)
Claims (7)
- 粉体が流れる方向に狭幅部と広幅部とを備えた流路と、
前記広幅部の中央部に前記流路に沿って1列に配置され、同極が向き合うように並べられた複数の磁石片と、前記磁石片に挟まれた継鉄と、前記磁石片と前記継鉄とを拘束する拘束部材とを含んで構成されると共に、前記狭幅部より広幅の棒状磁性体と、
を有し、
隣り合う前記棒状磁性体を構成する前記継鉄の位置が、粉体の流れる方向に対してずらして配置されている磁力選別機。 - 前記流路の内部に架設され、前記棒状磁性体が挿入される非磁性の筒体を有する請求項1に記載の磁力選別機。
- 前記流路には、前記筒体へエアを噴きつけるエア噴出部が設けられた請求項2に記載の磁力選別機。
- 前記流路は上下方向へ配置され、流路の上部には前記流路の下部から粉体を吸引する第1の吸引手段が設けられている請求項1〜3の何れか1項に記載の磁力選別機。
- 前記流路の下部には、磁力選別後に前記棒状磁性体に吸着された、粉体に含まれる磁性不純物を吸引する第2の吸引手段が設けられている請求項4に記載の磁力選別機。
- 請求項1〜5の何れか1項に記載された磁力選別機を用いて、前記流路に粉体を投入し、前記棒状磁性体に粉体に含まれた磁性不純物を吸着させることで磁性不純物を取り除く、磁性不純物の除去方法。
- 請求項1〜5の何れか1項に記載された磁力選別機によって磁性不純物が取り除かれた炭素材料を有機系結着剤及び溶剤と混合させて集電体へ塗布した後に加圧して形成される負極電極と、リチウム化合物を含む正極電極と、でリチウムイオン二次電池を製造するリチウムイオン二次電池の製造方法。
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JP2011115229A JP5799580B2 (ja) | 2011-05-23 | 2011-05-23 | 磁力選別機、磁性不純物の除去方法及びリチウムイオン二次電池の製造方法 |
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Cited By (1)
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CN109012962A (zh) * | 2017-03-27 | 2018-12-18 | 陈萍 | 一种固液电极材料两用除磁粉碎装置 |
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JP6713794B2 (ja) * | 2016-03-01 | 2020-06-24 | 太平洋セメント株式会社 | アルカリ土類金属窒化物粒子の製造法 |
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DE102017105291B4 (de) * | 2017-03-13 | 2021-09-23 | Tiemo Sehon | Magnetabscheider zur Abscheidung ferromagnetischer Partikel aus einem Absaugluftstrom |
DE202017101871U1 (de) * | 2017-03-13 | 2017-04-21 | Tiemo Sehon | Karosseriearbeitsplatz zur Bearbeitung von Fahrzeugkarosserien |
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CN116773755B (zh) * | 2023-08-23 | 2023-12-01 | 琥崧智能装备(太仓)有限公司 | 磷酸铁锂制备过程磁性物质的在线检测方法及装置 |
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JP2673500B2 (ja) * | 1995-08-23 | 1997-11-05 | 株式会社東和製作所 | 除鉄用棒磁石及び除鉄装置 |
JP3044299U (ja) * | 1997-06-11 | 1997-12-16 | 正人 野崎 | 合成樹脂ペレット中に混在する鉄粉等の除去装置 |
JP3689269B2 (ja) * | 1999-06-30 | 2005-08-31 | ハウス食品株式会社 | 粉体処理装置 |
JP2002113387A (ja) * | 2000-10-04 | 2002-04-16 | Magnetec Japan Ltd | 磁性物除去装置 |
JP2003103194A (ja) * | 2001-09-28 | 2003-04-08 | Sekisui Chem Co Ltd | 鉄粉除去装置 |
JP2003303714A (ja) * | 2002-04-09 | 2003-10-24 | Sumitomo Special Metals Co Ltd | 棒磁石および磁性体除去装置 |
JP4470366B2 (ja) * | 2002-11-18 | 2010-06-02 | ソニー株式会社 | 電池の製造装置及び製造方法 |
JP4301369B2 (ja) * | 2004-06-07 | 2009-07-22 | 有限会社 マグネットプラン | 磁石体及びその磁石体を用いた箱又は磁選機 |
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