JP4887728B2 - 焼結原料の造粒方法 - Google Patents
焼結原料の造粒方法 Download PDFInfo
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- JP4887728B2 JP4887728B2 JP2005307343A JP2005307343A JP4887728B2 JP 4887728 B2 JP4887728 B2 JP 4887728B2 JP 2005307343 A JP2005307343 A JP 2005307343A JP 2005307343 A JP2005307343 A JP 2005307343A JP 4887728 B2 JP4887728 B2 JP 4887728B2
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- 239000002994 raw material Substances 0.000 title claims description 57
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- 239000011230 binding agent Substances 0.000 claims description 39
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 34
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- 238000009818 secondary granulation Methods 0.000 claims description 21
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
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- 239000000292 calcium oxide Substances 0.000 claims description 17
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- 229910052742 iron Inorganic materials 0.000 claims description 13
- 239000000440 bentonite Substances 0.000 claims description 11
- 229910000278 bentonite Inorganic materials 0.000 claims description 11
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 11
- 239000000203 mixture Substances 0.000 claims description 8
- 235000019353 potassium silicate Nutrition 0.000 claims description 8
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 8
- 239000000571 coke Substances 0.000 claims description 7
- 238000002156 mixing Methods 0.000 claims description 7
- 235000019738 Limestone Nutrition 0.000 claims description 5
- 239000006028 limestone Substances 0.000 claims description 5
- 239000011361 granulated particle Substances 0.000 description 21
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- 239000001856 Ethyl cellulose Substances 0.000 description 2
- 239000004372 Polyvinyl alcohol Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 2
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- 229920001249 ethyl cellulose Polymers 0.000 description 2
- 235000019325 ethyl cellulose Nutrition 0.000 description 2
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- LNAZSHAWQACDHT-XIYTZBAFSA-N (2r,3r,4s,5r,6s)-4,5-dimethoxy-2-(methoxymethyl)-3-[(2s,3r,4s,5r,6r)-3,4,5-trimethoxy-6-(methoxymethyl)oxan-2-yl]oxy-6-[(2r,3r,4s,5r,6r)-4,5,6-trimethoxy-2-(methoxymethyl)oxan-3-yl]oxyoxane Chemical compound CO[C@@H]1[C@@H](OC)[C@H](OC)[C@@H](COC)O[C@H]1O[C@H]1[C@H](OC)[C@@H](OC)[C@H](O[C@H]2[C@@H]([C@@H](OC)[C@H](OC)O[C@@H]2COC)OC)O[C@@H]1COC LNAZSHAWQACDHT-XIYTZBAFSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- ZZSNKZQZMQGXPY-UHFFFAOYSA-N Ethyl cellulose Chemical compound CCOCC1OC(OC)C(OCC)C(OCC)C1OC1C(O)C(O)C(OC)C(CO)O1 ZZSNKZQZMQGXPY-UHFFFAOYSA-N 0.000 description 1
- 229920002907 Guar gum Polymers 0.000 description 1
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- CPGKMLVTFNUAHL-UHFFFAOYSA-N [Ca].[Ca] Chemical compound [Ca].[Ca] CPGKMLVTFNUAHL-UHFFFAOYSA-N 0.000 description 1
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- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
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- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 description 1
- 239000000920 calcium hydroxide Substances 0.000 description 1
- 235000011116 calcium hydroxide Nutrition 0.000 description 1
- 229910001861 calcium hydroxide Inorganic materials 0.000 description 1
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- -1 hydroxypropyl ethyl Chemical group 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229920005610 lignin Polymers 0.000 description 1
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- 229920000609 methyl cellulose Polymers 0.000 description 1
- 239000001923 methylcellulose Substances 0.000 description 1
- 235000010981 methylcellulose Nutrition 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000008107 starch Substances 0.000 description 1
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- 238000009628 steelmaking Methods 0.000 description 1
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Description
製鉄研究第288号(1976)第9頁〜第18頁
GI指数=((1−A’/A)+(1−B’/B))×100
A :粒径0.25〜0.5mmの真粒子の割合(重量%)
A’:粒径0.25〜0.5mmの造粒粒子の割合(重量%)
B :粒径0.25mm以下の真粒子の割合(重量%)
B’:粒径0.25mm以下の造粒粒子の割合(重量%)
焼結原料(各種鉄鉱石、蛇紋岩、珪石、石灰石、返鉱、粉コークス)に生石灰を表1に示す配合で添加した配合原料(含水率4重量%)をドラムミキサーに投入し、20rpmで回転させながら、散水下に一次造粒し、表1に示す含水率の一次造粒物を得た。散水は1分間かけて行い、回転時間は表1に示す通りとした。
2,3,6 ベルトコンベア
4 ドラムミキサー
4A 一次ドラムミキサー
4B 二次ドラムミキサー
Claims (4)
- 焼結鉱の焼結原料として用いられる鉄鉱石、石灰石、及び粉コークスを含む混合物である焼結原料に生石灰を配合し、散水を行って一次造粒を行った後、更に粘度が5〜100mPa・sの液状バインダーを添加して二次造粒を行って、含水率6〜9重量%の造粒物を得る焼結原料の造粒方法であって、前記液状バインダーがベントナイトを含むことを特徴とする焼結原料の造粒方法。
- 請求項1において、前記液状バインダーがベントナイトと水ガラスを含むことを特徴とする焼結原料の造粒方法。
- 請求項1又は2において、前記一次造粒と二次造粒とを個別のミキサーを用いて行うことを特徴とする焼結原料の造粒方法。
- 請求項1又は2において、前記一次造粒と二次造粒とを1台のミキサーを用いて行うことを特徴とする焼結原料の造粒方法。
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JP2005307343A JP4887728B2 (ja) | 2005-10-21 | 2005-10-21 | 焼結原料の造粒方法 |
CN 200610152822 CN1952185A (zh) | 2005-10-21 | 2006-10-20 | 烧结原料的造粒方法 |
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JP2005307343A JP4887728B2 (ja) | 2005-10-21 | 2005-10-21 | 焼結原料の造粒方法 |
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JP2007113086A JP2007113086A (ja) | 2007-05-10 |
JP4887728B2 true JP4887728B2 (ja) | 2012-02-29 |
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CN (1) | CN1952185A (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2009017059A1 (ja) | 2007-07-27 | 2009-02-05 | Kabushiki Kaisha Kobe Seiko Sho | 炭材内装酸化金属ブリケットの製造方法 |
CN102002583B (zh) * | 2009-09-03 | 2012-07-25 | 西南科技大学 | 一种铁矿石粉球团化方法 |
JP5821362B2 (ja) * | 2010-07-30 | 2015-11-24 | Jfeスチール株式会社 | 焼結用原料の製造方法 |
CN102700954A (zh) * | 2012-06-14 | 2012-10-03 | 中冶北方(大连)工程技术有限公司 | 烧结球团粉料接受储存与配料系统 |
CN103484665B (zh) * | 2013-10-14 | 2016-05-25 | 北京科技大学 | 采用不同粘结剂和两次成球方式制作冶金复合球团的方法 |
US9580769B2 (en) * | 2013-10-22 | 2017-02-28 | Vale S.A. | Device for the improvement of crude pellets and pelletizing process |
CN104004906A (zh) * | 2014-03-12 | 2014-08-27 | 北京宇航同辉能源科技有限公司 | 一种球团添加剂及其制备方法 |
CN104805280B (zh) * | 2015-04-30 | 2017-04-26 | 马钢(集团)控股有限公司 | 一种煤基法生产高品质电炉用金属炉料的工艺 |
WO2017221774A1 (ja) * | 2016-06-22 | 2017-12-28 | Jfeスチール株式会社 | 炭材内装焼結鉱の製造方法 |
JP7115212B2 (ja) * | 2018-10-18 | 2022-08-09 | 日本製鉄株式会社 | 製鋼用塊成物の製造方法 |
CN110283995A (zh) * | 2019-07-31 | 2019-09-27 | 河北东慈环保科技有限公司 | 含炭铁粉球团的干粉粘合剂及其制备方法和应用 |
CN110592374B (zh) * | 2019-10-21 | 2021-05-28 | 攀钢集团攀枝花钢铁研究院有限公司 | 一种转炉化渣剂球团及其成型用粘结剂 |
JP7419155B2 (ja) * | 2020-05-07 | 2024-01-22 | 株式会社神戸製鋼所 | 鉄鉱石ペレットの製造方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2000178662A (ja) * | 1998-10-05 | 2000-06-27 | Daicel Chem Ind Ltd | 粉末金属原料用造粒剤及び湿式造粒法 |
JP4261672B2 (ja) * | 1999-03-26 | 2009-04-30 | 新日本製鐵株式会社 | 焼結原料の造粒方法 |
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- 2005-10-21 JP JP2005307343A patent/JP4887728B2/ja active Active
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JP2007113086A (ja) | 2007-05-10 |
CN1952185A (zh) | 2007-04-25 |
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