JP6686974B2 - 焼結鉱の製造方法 - Google Patents
焼結鉱の製造方法 Download PDFInfo
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- JP6686974B2 JP6686974B2 JP2017114857A JP2017114857A JP6686974B2 JP 6686974 B2 JP6686974 B2 JP 6686974B2 JP 2017114857 A JP2017114857 A JP 2017114857A JP 2017114857 A JP2017114857 A JP 2017114857A JP 6686974 B2 JP6686974 B2 JP 6686974B2
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- ore
- sintering
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- iron ore
- oxygen concentration
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- 238000004519 manufacturing process Methods 0.000 title claims description 59
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 136
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 91
- 229910052760 oxygen Inorganic materials 0.000 claims description 91
- 239000001301 oxygen Substances 0.000 claims description 91
- 238000005245 sintering Methods 0.000 claims description 81
- 239000002245 particle Substances 0.000 claims description 74
- 229910052742 iron Inorganic materials 0.000 claims description 68
- 239000002994 raw material Substances 0.000 claims description 37
- 239000007789 gas Substances 0.000 claims description 30
- 239000003575 carbonaceous material Substances 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 5
- 239000010410 layer Substances 0.000 description 76
- 239000000843 powder Substances 0.000 description 41
- 230000007423 decrease Effects 0.000 description 23
- 238000002485 combustion reaction Methods 0.000 description 15
- 239000008188 pellet Substances 0.000 description 15
- 238000000034 method Methods 0.000 description 13
- 238000009826 distribution Methods 0.000 description 11
- 230000000694 effects Effects 0.000 description 9
- 239000000446 fuel Substances 0.000 description 9
- 238000002474 experimental method Methods 0.000 description 8
- 230000035699 permeability Effects 0.000 description 8
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 239000000047 product Substances 0.000 description 5
- 238000010298 pulverizing process Methods 0.000 description 5
- 239000002893 slag Substances 0.000 description 5
- 230000006866 deterioration Effects 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 4
- 239000008187 granular material Substances 0.000 description 4
- 238000005469 granulation Methods 0.000 description 4
- 230000003179 granulation Effects 0.000 description 4
- 235000012255 calcium oxide Nutrition 0.000 description 3
- 239000000292 calcium oxide Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 230000001112 coagulating effect Effects 0.000 description 2
- 239000011362 coarse particle Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 239000006028 limestone Substances 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000012256 powdered iron Substances 0.000 description 2
- 238000007873 sieving Methods 0.000 description 2
- 239000002344 surface layer Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910000805 Pig iron Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000000701 coagulant Substances 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000009770 conventional sintering Methods 0.000 description 1
- 239000007771 core particle Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000010459 dolomite Substances 0.000 description 1
- 229910000514 dolomite Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Description
(1)焼結機の原料給鉱部で循環移動するパレット上に鉄鉱石と炭材とを含む焼結原料を装入して装入層を形成した後、前記原料給鉱部の下流側に配設した点火炉で前記装入層の上表面の炭材に点火し、パレット下方に配設したウインドボックスで前記装入層の上方のガスを吸引し、前記ガスを前記装入層に導入して前記装入層の炭材を燃焼させることにより焼結鉱を製造する焼結鉱の製造方法において、前記鉄鉱石は、粒径150μm以下の微粉鉄鉱石を10質量%より多く含み、前記装入層に導入する前記ガスの酸素濃度を23体積%より高くする、焼結鉱の製造方法。
(2)前記点火炉から排鉱部までの前記焼結機の機長方向の長さをLとすると、前記点火炉側であって0.05×Lから0.5×Lまでの長さの範囲内において、前記装入層に導入する前記ガスの酸素濃度を23体積%より高くする、(1)に記載の焼結鉱の製造方法。
(3)前記鉄鉱石は、粒径150μm以下の微粉鉄鉱石を15質量%以上含む、(1)または(2)に記載の焼結鉱の製造方法。
(4)前記装入層に導入する前記ガスの酸素濃度を24体積%以上にする、(1)から(3)の何れか1つに記載の焼結鉱の製造方法。
2 ドラムミキサー
3 ドラムミキサー
5 サージホッパー
6 ドラムフィーダー
7 切り出しシュート
8 カットゲート
9 パレット
10 原料装入層
11 点火炉
12 ウインドボックス(風箱)
Claims (2)
- 焼結機の原料給鉱部で循環移動するパレット上に鉄鉱石と炭材とを含有する擬似粒子を含む焼結原料を装入して装入層を形成した後、前記原料給鉱部の下流側に配設した点火炉で前記装入層の上表面の炭材に点火し、パレット下方に配設したウインドボックスで前記装入層の上方のガスを吸引し、前記ガスを前記装入層に導入して前記装入層の炭材を燃焼させることにより焼結鉱を製造する焼結鉱の製造方法において、
前記鉄鉱石は、粒径150μm以下の微粉鉄鉱石を15質量%以上含み、
前記装入層に導入する前記ガスの酸素濃度を24体積%以上にする、焼結鉱の製造方法。 - 前記点火炉から排鉱部までの前記焼結機の機長方向の長さをLとすると、前記点火炉側であって0.05×Lから0.5×Lまでの長さの範囲内において、前記装入層に導入する前記ガスの酸素濃度を24体積%以上にする、請求項1に記載の焼結鉱の製造方法。
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JP2016123502 | 2016-06-22 | ||
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JP2018003153A JP2018003153A (ja) | 2018-01-11 |
JP6686974B2 true JP6686974B2 (ja) | 2020-04-22 |
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Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2020115959A1 (ja) * | 2018-12-07 | 2020-06-11 | Jfeスチール株式会社 | 焼結鉱の製造方法 |
JP6988844B2 (ja) * | 2019-02-26 | 2022-01-05 | Jfeスチール株式会社 | 焼結鉱の製造方法 |
JP7227053B2 (ja) * | 2019-03-29 | 2023-02-21 | Jfeスチール株式会社 | 焼結鉱の製造方法 |
CN113077848B (zh) * | 2021-03-26 | 2024-05-14 | 马鞍山钢铁股份有限公司 | 一种烧结料层透气性在线判断计算方法 |
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JP3395505B2 (ja) * | 1996-02-26 | 2003-04-14 | 日本鋼管株式会社 | 無端移動型焼結機の操業方法 |
JPH11131153A (ja) * | 1997-08-27 | 1999-05-18 | Nkk Corp | 焼結機の操業方法 |
CN103154280A (zh) * | 2010-10-08 | 2013-06-12 | 新日铁住金株式会社 | 铁矿石原料的造粒物的制造方法及铁矿石原料的造粒物 |
JP2013147718A (ja) * | 2012-01-20 | 2013-08-01 | Nippon Steel & Sumitomo Metal Corp | 焼結鉱の製造方法 |
JP5979382B2 (ja) * | 2013-05-22 | 2016-08-24 | Jfeスチール株式会社 | 焼結用造粒原料の製造方法およびその製造設備 |
BR112016000103B1 (pt) * | 2013-07-10 | 2020-05-12 | Jfe Steel Corporation | Partículas granuladas contendo material de carbono para fabricar minério sinterizado, e métodos para produzir as mesmas e para produzir minério sinterizado |
JP5995005B2 (ja) * | 2013-09-12 | 2016-09-21 | Jfeスチール株式会社 | 焼結原料の製造方法 |
JP6330536B2 (ja) * | 2014-07-14 | 2018-05-30 | 新日鐵住金株式会社 | 焼結原料の事前処理方法 |
CN106282546B (zh) * | 2015-06-05 | 2018-11-06 | 中冶长天国际工程有限责任公司 | 一种烟气循环式预还原烧结工艺 |
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