JP6071138B2 - フェロニッケルの脱硫方法 - Google Patents
フェロニッケルの脱硫方法 Download PDFInfo
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- JP6071138B2 JP6071138B2 JP2013143803A JP2013143803A JP6071138B2 JP 6071138 B2 JP6071138 B2 JP 6071138B2 JP 2013143803 A JP2013143803 A JP 2013143803A JP 2013143803 A JP2013143803 A JP 2013143803A JP 6071138 B2 JP6071138 B2 JP 6071138B2
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- Prior art keywords
- desulfurization
- ferronickel
- agent
- molten metal
- stirring blade
- Prior art date
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- 238000006477 desulfuration reaction Methods 0.000 title claims description 144
- 230000023556 desulfurization Effects 0.000 title claims description 144
- 229910000863 Ferronickel Inorganic materials 0.000 title claims description 98
- 238000000034 method Methods 0.000 title claims description 39
- 239000003795 chemical substances by application Substances 0.000 claims description 124
- 238000003756 stirring Methods 0.000 claims description 92
- 230000003009 desulfurizing effect Effects 0.000 claims description 78
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 29
- 239000002893 slag Substances 0.000 claims description 29
- 229910052717 sulfur Inorganic materials 0.000 claims description 29
- 239000011593 sulfur Substances 0.000 claims description 29
- 238000009434 installation Methods 0.000 claims description 16
- 238000007790 scraping Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 description 79
- 239000002184 metal Substances 0.000 description 79
- 239000000155 melt Substances 0.000 description 12
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 8
- 239000005997 Calcium carbide Substances 0.000 description 7
- 238000003723 Smelting Methods 0.000 description 7
- CLZWAWBPWVRRGI-UHFFFAOYSA-N tert-butyl 2-[2-[2-[2-[bis[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]amino]-5-bromophenoxy]ethoxy]-4-methyl-n-[2-[(2-methylpropan-2-yl)oxy]-2-oxoethyl]anilino]acetate Chemical compound CC1=CC=C(N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)C(OCCOC=2C(=CC=C(Br)C=2)N(CC(=O)OC(C)(C)C)CC(=O)OC(C)(C)C)=C1 CLZWAWBPWVRRGI-UHFFFAOYSA-N 0.000 description 7
- JGIATAMCQXIDNZ-UHFFFAOYSA-N calcium sulfide Chemical compound [Ca]=S JGIATAMCQXIDNZ-UHFFFAOYSA-N 0.000 description 6
- 238000005266 casting Methods 0.000 description 6
- 230000007423 decrease Effects 0.000 description 6
- 238000007654 immersion Methods 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 230000008018 melting Effects 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- 238000010907 mechanical stirring Methods 0.000 description 4
- 239000003638 chemical reducing agent Substances 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000446 fuel Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910000480 nickel oxide Inorganic materials 0.000 description 3
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 241000283014 Dama Species 0.000 description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 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
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- JNSGIVNNHKGGRU-JYRVWZFOSA-N diethoxyphosphinothioyl (2z)-2-(2-amino-1,3-thiazol-4-yl)-2-methoxyiminoacetate Chemical compound CCOP(=S)(OCC)OC(=O)C(=N/OC)\C1=CSC(N)=N1 JNSGIVNNHKGGRU-JYRVWZFOSA-N 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000003317 industrial substance Substances 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 238000010309 melting process Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Description
電気炉から産出された粗フェロニッケル熔湯(硫黄品位:0.4重量%)30トンを、撹拌羽根を用いる機械式撹拌装置を備えた取鍋内に装入し、これに脱硫剤としてカルシウムカーバイドを所定量(20kg)投入して、脱硫処理を行った。カルシウムカーバイド投入量は、粗フェロニッケル熔湯の硫黄品位、及び、製品スペックを満足する実操業での脱硫管理目標値(硫黄品位0.025重量%以下)を勘案した上で決定した。
比較例1では、脱硫剤の投入口を1箇所とし(図3参照。符号「100」が取鍋、「200」が撹拌羽根、「300」が脱硫剤の投入口を示す。)、その1箇所の投入口から脱硫剤を投入して脱硫処理を行ったこと以外は、実施例1と同様にして脱硫処理の操業を行った。なお、合計の脱硫剤投入量も実施例1と同じであり、その1箇所の投入口の設置位置も、撹拌羽根の回転半径の外側であってその撹拌羽根の端部に近接する位置とした。
Claims (3)
- 撹拌羽根を有する撹拌装置を備えた取鍋内で、還元炉から出銑された粗フェロニッケル熔湯に脱硫剤を投入し、該撹拌羽根により撹拌することで該粗フェロニッケル熔湯中の硫黄を精製スラグ中に固定し分離するフェロニッケルの脱硫方法であって、
脱硫処理に要する所定量の前記脱硫剤を投入する投入口を、少なくとも2箇所設けるようにし、その2箇所以上の投入口から均等量の脱硫剤を同時に投入し、
前記脱硫剤の投入口は、円形のパイプ状であり、前記粗フェロニッケル熔湯の水平面に対する傾斜角度が40〜85度の範囲であり、
パイプの断面積が300〜10000mm 2 の範囲であることを特徴とするフェロニッケルの脱硫方法。 - 前記脱硫剤の投入口の設置位置を、前記撹拌羽根の回転半径よりも外側であって該撹拌羽根に近接する箇所に脱硫剤が投入される位置とし、該投入口から該撹拌羽根の回転により精製スラグが掻き分けられて現れた粗フェロニッケル熔湯の表面に前記脱硫剤を投入することを特徴とする請求項1に記載のフェロニッケルの脱硫方法。
- 少なくとも2箇所備える前記脱硫剤の投入口を、前記取鍋の中心に対して対称性を有するように設けることを特徴とする請求項1又は2に記載のフェロニッケルの脱硫方法。
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Families Citing this family (3)
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JP6849280B2 (ja) * | 2017-02-24 | 2021-03-24 | 株式会社日向製錬所 | 脱硫剤添加設備 |
JP7235238B2 (ja) * | 2019-03-06 | 2023-03-08 | 株式会社日向製錬所 | フェロニッケルの脱硫方法 |
CN115927874A (zh) * | 2022-12-12 | 2023-04-07 | 江苏惠然实业有限公司 | 一种镍铁硫化的方法 |
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JP5194678B2 (ja) * | 2007-09-26 | 2013-05-08 | Jfeスチール株式会社 | 溶銑の脱硫方法 |
JP2012241246A (ja) * | 2011-05-20 | 2012-12-10 | Hyuga Seirensho:Kk | フェロニッケルの脱硫方法 |
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