JP2023055665A - 精錬炉又は反応炉に投入する粉原料の事前処理方法及び精錬炉又は反応炉の操業方法 - Google Patents
精錬炉又は反応炉に投入する粉原料の事前処理方法及び精錬炉又は反応炉の操業方法 Download PDFInfo
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- 239000002994 raw material Substances 0.000 title claims abstract description 66
- 239000000843 powder Substances 0.000 title claims abstract description 42
- 238000007670 refining Methods 0.000 title claims abstract description 31
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 29
- 238000002203 pretreatment Methods 0.000 title claims abstract description 6
- 238000011017 operating method Methods 0.000 title 1
- 238000000034 method Methods 0.000 claims abstract description 48
- 238000007873 sieving Methods 0.000 claims abstract description 25
- 238000003723 Smelting Methods 0.000 claims description 61
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 claims description 55
- 239000003830 anthracite Substances 0.000 claims description 55
- 239000003245 coal Substances 0.000 claims description 45
- 229910052804 chromium Inorganic materials 0.000 claims description 41
- 239000011651 chromium Substances 0.000 claims description 41
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 40
- 238000007664 blowing Methods 0.000 claims description 7
- 239000010935 stainless steel Substances 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 238000005507 spraying Methods 0.000 abstract description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 46
- 238000006722 reduction reaction Methods 0.000 description 40
- 239000007789 gas Substances 0.000 description 32
- 229910052742 iron Inorganic materials 0.000 description 23
- 238000002347 injection Methods 0.000 description 17
- 239000007924 injection Substances 0.000 description 17
- 239000000428 dust Substances 0.000 description 16
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 description 11
- 229910000423 chromium oxide Inorganic materials 0.000 description 11
- 239000002245 particle Substances 0.000 description 11
- 230000001590 oxidative effect Effects 0.000 description 10
- 239000002893 slag Substances 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 8
- 229910052799 carbon Inorganic materials 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 3
- 229910002091 carbon monoxide Inorganic materials 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 241000209094 Oryza Species 0.000 description 2
- 235000007164 Oryza sativa Nutrition 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000003575 carbonaceous material Substances 0.000 description 2
- 235000013339 cereals Nutrition 0.000 description 2
- 239000003610 charcoal Substances 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000000571 coke Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 238000011946 reduction process Methods 0.000 description 2
- 235000009566 rice Nutrition 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910000604 Ferrochrome Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- 235000012255 calcium oxide Nutrition 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 150000001844 chromium Chemical class 0.000 description 1
- 239000011362 coarse particle Substances 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
Images
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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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- Manufacture And Refinement Of Metals (AREA)
- Manufacture Of Iron (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Abstract
Description
[1]精錬炉又は反応炉に投入する粉原料の事前処理方法であって、
篩い設備の篩い網上に前記粉原料を供給する工程と、
前記篩い網上の前記粉原料に対してガスを吹き付けながら、前記篩い設備を稼働して前記篩い網にて前記粉原料を篩上と篩下とに篩い分ける工程と、
前記篩い設備から前記篩上を回収する工程と、
を有する粉原料の事前処理方法。
回収した前記篩上を前記精錬炉又は前記反応炉に投入する工程と、
を有する精錬炉又は反応炉の操業方法。
12 ベルトコンベア
14 振動式スクリーン(篩い設備)
14A 篩い網
16 ガス噴射設備
16A ヘッダ
16B ノズル
18 微粉回収設備
20 ベルトコンベア
22 第1中間ホッパ
24 ベルトコンベア
26 第2中間ホッパ
28 ベルトコンベア
30 原料ホッパ
32 シュート
40 クロム鉱石溶融還元炉
41 炉体(反応容器)
42 出湯口
43 酸化性ガス供給ランス
44 羽口
45 クロム鉱石/ダスト供給ランス
Claims (12)
- 精錬炉又は反応炉に投入する粉原料の事前処理方法であって、
篩い設備の篩い網上に前記粉原料を供給する工程と、
前記篩い網上の前記粉原料に対してガスを吹き付けながら、前記篩い設備を稼働して前記篩い網にて前記粉原料を篩上と篩下とに篩い分ける工程と、
前記篩い設備から前記篩上を回収する工程と、
を有する粉原料の事前処理方法。 - 前記篩上の含水率を5.0質量%以下とする、請求項1に記載の粉原料の事前処理方法。
- 前記粉原料が石炭である、請求項1に記載の粉原料の事前処理方法。
- 前記石炭が無煙炭である、請求項3に記載の粉原料の事前処理方法。
- 前記ガスが空気である、請求項1に記載の粉原料の事前処理方法。
- 前記篩い設備が振動式スクリーンである、請求項1に記載の粉原料の事前処理方法。
- 前記精錬炉が転炉型精錬炉である、請求項1に記載の粉原料の事前処理方法。
- 前記転炉型精錬炉が溶融還元炉である、請求項7に記載の粉原料の事前処理方法。
- 前記溶融還元炉が、ステンレス鋼を製造するためのクロム鉱石溶融還元炉である、請求項8に記載の粉原料の事前処理方法。
- 前記転炉型精錬炉が脱炭炉である、請求項7に記載の粉原料の事前処理方法。
- 前記反応炉が高炉である、請求項1に記載の粉原料の事前処理方法。
- 請求項1~11のいずれか一項に記載の粉原料の事前処理方法と、
回収した前記篩上を前記精錬炉又は前記反応炉に投入する工程と、
を有する精錬炉又は反応炉の操業方法。
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JP2023055665A true JP2023055665A (ja) | 2023-04-18 |
JP7517379B2 JP7517379B2 (ja) | 2024-07-17 |
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JP5446115B2 (ja) | 2007-11-29 | 2014-03-19 | Jfeスチール株式会社 | 塊鉱石付着粉の除去方法 |
JP5648467B2 (ja) | 2010-12-21 | 2015-01-07 | Jfeスチール株式会社 | 冶金用コークスの篩い分け方法、冶金用コークスの篩設備 |
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