JPWO2017119392A1 - 溶鉄の脱りん剤、精錬剤および脱りん方法 - Google Patents
溶鉄の脱りん剤、精錬剤および脱りん方法 Download PDFInfo
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- JPWO2017119392A1 JPWO2017119392A1 JP2017560372A JP2017560372A JPWO2017119392A1 JP WO2017119392 A1 JPWO2017119392 A1 JP WO2017119392A1 JP 2017560372 A JP2017560372 A JP 2017560372A JP 2017560372 A JP2017560372 A JP 2017560372A JP WO2017119392 A1 JPWO2017119392 A1 JP WO2017119392A1
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- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 45
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000007670 refining Methods 0.000 title claims abstract description 30
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 16
- 238000000034 method Methods 0.000 title claims description 35
- WETINTNJFLGREW-UHFFFAOYSA-N calcium;iron;tetrahydrate Chemical compound O.O.O.O.[Ca].[Fe].[Fe] WETINTNJFLGREW-UHFFFAOYSA-N 0.000 claims abstract description 49
- 229910052751 metal Inorganic materials 0.000 claims abstract description 35
- 239000002184 metal Substances 0.000 claims abstract description 35
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 64
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 41
- 238000009991 scouring Methods 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052593 corundum Inorganic materials 0.000 abstract 2
- 229910001845 yogo sapphire Inorganic materials 0.000 abstract 2
- 239000011734 sodium Substances 0.000 description 49
- 239000002893 slag Substances 0.000 description 45
- 238000007664 blowing Methods 0.000 description 31
- 238000002844 melting Methods 0.000 description 27
- 230000008018 melting Effects 0.000 description 27
- 229910000831 Steel Inorganic materials 0.000 description 22
- 239000010959 steel Substances 0.000 description 22
- 230000000694 effects Effects 0.000 description 21
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 19
- 239000011574 phosphorus Substances 0.000 description 19
- 229910052698 phosphorus Inorganic materials 0.000 description 19
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 14
- 238000004090 dissolution Methods 0.000 description 13
- 239000000203 mixture Substances 0.000 description 8
- 239000000292 calcium oxide Substances 0.000 description 7
- 235000012255 calcium oxide Nutrition 0.000 description 7
- 230000001737 promoting effect Effects 0.000 description 6
- 238000009628 steelmaking Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 230000012447 hatching Effects 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000008188 pellet Substances 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 239000002994 raw material Substances 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 230000004907 flux Effects 0.000 description 4
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 4
- 239000010931 gold Substances 0.000 description 4
- 229910052737 gold Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 229910000859 α-Fe Inorganic materials 0.000 description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 229910052791 calcium Inorganic materials 0.000 description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
- 239000010436 fluorite Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 238000002309 gasification Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000001629 suppression Effects 0.000 description 2
- 229910004261 CaF 2 Inorganic materials 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- 238000003723 Smelting Methods 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000008262 pumice Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 235000017550 sodium carbonate Nutrition 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 235000019795 sodium metasilicate Nutrition 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
- C21C1/025—Agents used for dephosphorising or desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/36—Processes yielding slags of special composition
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
- C21C7/0645—Agents used for dephosphorising or desulfurising
-
- 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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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
Description
(1)
2〜20質量%のAl2O3を含有し、残部がカルシウムフェライトと不純物であり、
(Al2O3質量%)/(CaO質量%)比が0.04〜0.5である、溶鉄の脱りん剤。
(2)
さらに、1〜10質量%のSiO2を含有し、(SiO2質量%)/(CaO質量%)比が0.04〜0.3である、(1)に記載の溶鉄の脱りん剤
(3)
さらに(Na2O質量%)/(Al2O3質量%)比が0.1〜2.0となるNa2Oを含有する、(1)または(2)のいずれか1項に記載の溶鉄の脱りん剤。
(4)
(1)〜(3)のいずれか1項に記載の脱りん剤を含有する、精錬剤。
(5)
(4)に記載の精錬剤を転炉内に添加し、溶銑の脱りん処理を行う方法であって、装入(CaO)/(SiO2)比が1.3〜2.0である、溶鉄の脱りん方法。
(6)
前記カルシウムフェライトに含まれるCaO質量が、前記精練剤に含まれるCaO質量の20%以上である、(5)に記載の溶銑の脱りん方法。
(7)
前記精錬剤を溶銑の装入よりも前に前記転炉内に投入する、(5)に記載の溶銑の脱りん方法。
本発明者らは上底吹き転炉の脱りんプロセスにおけるカルシウムフェライトの溶融性改善のため、CaOおよびFe2O3に種々の化合物を添加し、これを溶解炉で完全溶融した種々のカルシウムフェライトを作成した。また、CaOとFe2O3及びもしくは、Al2O3を混合し、常温でペレット状に成形したもの(以後、ペレットと称す)を作成した。次に赤外線ゴールドイメージ炉を搭載した高温顕微鏡を用いて、これらカルシウムフェライトおよびペレットを200℃/minの昇温速度で加熱し、溶融開始温度と溶融終了温度を測定した。
製鋼の精錬工程で用いられる精錬炉としては、通常、転炉が用いられ、転炉法による製鋼工程においては、主原料として溶銑とスクラップを装入して溶鋼が生産される。図1に、上底吹き転炉を用いた精錬工程の概略を示す。
2 スクラップ
3 精錬剤
4 溶銑
5 ランス
Claims (7)
- 2〜20質量%のAl2O3を含有し、残部がカルシウムフェライトと不純物であり、
(Al2O3質量%)/(CaO質量%)比が0.04〜0.5である、溶鉄の脱りん剤。 - さらに、1〜10質量%のSiO2を含有し、(SiO2質量%)/(CaO質量%)比が0.04〜0.3である、請求項1に記載の溶鉄の脱りん剤
- さらに(Na2O質量%)/(Al2O3質量%)比が0.1〜2.0となるNa2Oを含有する、請求項1または2のいずれか1項に記載の溶鉄の脱りん剤。
- 請求項1〜3のいずれか1項に記載の脱りん剤を含有する、精錬剤。
- 請求項4に記載の精錬剤を転炉内に添加し、溶銑の脱りん処理を行う方法であって、装入(CaO)/(SiO2)比が1.3〜2.0である、溶鉄の脱りん方法。
- 前記カルシウムフェライトに含まれるCaO質量が、前記精練剤に含まれるCaO質量の20%以上である、請求項5に記載の溶銑の脱りん方法。
- 前記精錬剤を溶銑の装入よりも前に前記転炉内に投入する、請求項5に記載の溶銑の脱りん方法。
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JP2016000488 | 2016-01-05 | ||
JP2016000488 | 2016-01-05 | ||
PCT/JP2016/089082 WO2017119392A1 (ja) | 2016-01-05 | 2016-12-28 | 溶鉄の脱りん剤、精錬剤および脱りん方法 |
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JPWO2017119392A1 true JPWO2017119392A1 (ja) | 2018-04-05 |
JP6481774B2 JP6481774B2 (ja) | 2019-03-13 |
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JP (1) | JP6481774B2 (ja) |
KR (1) | KR102105353B1 (ja) |
CN (1) | CN107849625A (ja) |
TW (1) | TWI609839B (ja) |
WO (1) | WO2017119392A1 (ja) |
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CN111670258B (zh) * | 2018-03-07 | 2023-01-10 | 日本制铁株式会社 | 铁水的脱磷方法 |
KR20240027050A (ko) * | 2021-08-10 | 2024-02-29 | 제이에프이 스틸 가부시키가이샤 | 냉철원 용해율 추정 장치, 전로형 정련로 제어 장치, 냉철원 용해율 추정 방법 및 용융철의 정련 처리 방법 |
CN113943844B (zh) * | 2021-10-19 | 2022-04-15 | 北京科技大学 | 一种铁水罐脱磷-转炉单脱碳的炼钢方法 |
CN114657326B (zh) * | 2022-03-30 | 2024-04-02 | 北京科技大学 | 一种脱磷剂及其应用 |
CN114990276A (zh) * | 2022-07-04 | 2022-09-02 | 北京科技大学 | 一种铁水同时预脱硫预脱磷的方法 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02232313A (ja) * | 1989-03-06 | 1990-09-14 | Taiyo Giken Kogyo Kk | 溶鋼の脱りん剤 |
CN101775465A (zh) * | 2009-12-31 | 2010-07-14 | 辽宁天和矿产有限公司 | 一种转炉炼钢脱磷剂及其制备方法 |
WO2013190591A1 (ja) * | 2012-06-18 | 2013-12-27 | Jfeスチール株式会社 | 精錬方法及び溶鋼の製造方法 |
JP2014031562A (ja) * | 2012-08-06 | 2014-02-20 | Nippon Steel & Sumitomo Metal | 溶銑の脱りん処理方法 |
JP2014040623A (ja) * | 2012-08-21 | 2014-03-06 | Nippon Steel & Sumitomo Metal | 溶銑の脱りん方法 |
Family Cites Families (9)
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JP2001348610A (ja) | 2000-06-07 | 2001-12-18 | Nippon Steel Corp | 滓化促進剤 |
CN1600872A (zh) * | 2004-10-26 | 2005-03-30 | 上海彭浦冶金辅料有限公司 | 一种转炉脱磷剂及其制备方法 |
JP5525939B2 (ja) | 2010-07-02 | 2014-06-18 | 大阪鋼灰株式会社 | 石灰系フラックスおよびその製造法 |
CN102453788A (zh) * | 2010-10-21 | 2012-05-16 | 金素玉 | 转炉炼钢脱磷剂制备方法 |
JP5360174B2 (ja) | 2011-09-15 | 2013-12-04 | 新日鐵住金株式会社 | 溶銑の脱りん方法 |
JP5772645B2 (ja) | 2012-02-10 | 2015-09-02 | 新日鐵住金株式会社 | 溶銑の脱りん処理方法 |
CN102787212A (zh) * | 2012-06-28 | 2012-11-21 | 辽宁中汇环保科技有限公司 | 一种炼钢脱磷剂及其制备方法 |
CN103981335B (zh) * | 2014-05-30 | 2015-11-18 | 重庆大学 | 一种含钒铁水提钒脱磷剂 |
CN104593546B (zh) * | 2014-09-26 | 2016-07-06 | 洛阳金石再生资源开发有限公司 | 一种预熔型铁酸钙脱磷剂的制备方法 |
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2016
- 2016-12-28 JP JP2017560372A patent/JP6481774B2/ja active Active
- 2016-12-28 KR KR1020187002603A patent/KR102105353B1/ko active IP Right Grant
- 2016-12-28 WO PCT/JP2016/089082 patent/WO2017119392A1/ja active Application Filing
- 2016-12-28 CN CN201680045089.0A patent/CN107849625A/zh active Pending
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- 2017-01-03 TW TW106100044A patent/TWI609839B/zh not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02232313A (ja) * | 1989-03-06 | 1990-09-14 | Taiyo Giken Kogyo Kk | 溶鋼の脱りん剤 |
CN101775465A (zh) * | 2009-12-31 | 2010-07-14 | 辽宁天和矿产有限公司 | 一种转炉炼钢脱磷剂及其制备方法 |
WO2013190591A1 (ja) * | 2012-06-18 | 2013-12-27 | Jfeスチール株式会社 | 精錬方法及び溶鋼の製造方法 |
JP2014031562A (ja) * | 2012-08-06 | 2014-02-20 | Nippon Steel & Sumitomo Metal | 溶銑の脱りん処理方法 |
JP2014040623A (ja) * | 2012-08-21 | 2014-03-06 | Nippon Steel & Sumitomo Metal | 溶銑の脱りん方法 |
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KR102105353B1 (ko) | 2020-04-29 |
KR20180021167A (ko) | 2018-02-28 |
JP6481774B2 (ja) | 2019-03-13 |
CN107849625A (zh) | 2018-03-27 |
WO2017119392A1 (ja) | 2017-07-13 |
TWI609839B (zh) | 2018-01-01 |
TW201726550A (zh) | 2017-08-01 |
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