JP6888741B2 - 鋼の製造方法及びスラグの塩基度低減方法 - Google Patents
鋼の製造方法及びスラグの塩基度低減方法 Download PDFInfo
- Publication number
- JP6888741B2 JP6888741B2 JP2020514773A JP2020514773A JP6888741B2 JP 6888741 B2 JP6888741 B2 JP 6888741B2 JP 2020514773 A JP2020514773 A JP 2020514773A JP 2020514773 A JP2020514773 A JP 2020514773A JP 6888741 B2 JP6888741 B2 JP 6888741B2
- Authority
- JP
- Japan
- Prior art keywords
- refining treatment
- slag
- furnace body
- molten steel
- hot metal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 229910000831 Steel Inorganic materials 0.000 title claims description 120
- 239000010959 steel Substances 0.000 title claims description 120
- 239000002893 slag Substances 0.000 title claims description 116
- 238000000034 method Methods 0.000 title claims description 51
- 238000004519 manufacturing process Methods 0.000 title claims description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 150
- 238000007670 refining Methods 0.000 claims description 122
- 238000011282 treatment Methods 0.000 claims description 99
- 239000000377 silicon dioxide Substances 0.000 claims description 75
- 238000007664 blowing Methods 0.000 claims description 72
- 239000000126 substance Substances 0.000 claims description 69
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 55
- 229910001882 dioxygen Inorganic materials 0.000 claims description 55
- 239000002184 metal Substances 0.000 claims description 54
- 229910052751 metal Inorganic materials 0.000 claims description 54
- 230000001590 oxidative effect Effects 0.000 claims description 40
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 26
- 229910052760 oxygen Inorganic materials 0.000 claims description 26
- 239000001301 oxygen Substances 0.000 claims description 26
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 21
- 239000007789 gas Substances 0.000 claims description 20
- 238000006243 chemical reaction Methods 0.000 claims description 14
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- 230000003647 oxidation Effects 0.000 claims description 9
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 61
- 229910052742 iron Inorganic materials 0.000 description 30
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 238000007654 immersion Methods 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 9
- 230000007423 decrease Effects 0.000 description 9
- 229910052698 phosphorus Inorganic materials 0.000 description 9
- 239000011574 phosphorus Substances 0.000 description 9
- 239000003795 chemical substances by application Substances 0.000 description 8
- 238000002844 melting Methods 0.000 description 8
- 230000008018 melting Effects 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 239000002994 raw material Substances 0.000 description 7
- 239000004575 stone Substances 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 4
- 238000009826 distribution Methods 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 3
- 235000011941 Tilia x europaea Nutrition 0.000 description 3
- 238000005261 decarburization Methods 0.000 description 3
- 239000004571 lime Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000009628 steelmaking Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 238000011017 operating method Methods 0.000 description 2
- 238000002407 reforming Methods 0.000 description 2
- 239000002436 steel type Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000009844 basic oxygen steelmaking Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 238000009749 continuous casting Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000994 depressogenic effect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5211—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace
- C21C5/5217—Manufacture of steel in electric furnaces in an alternating current [AC] electric arc furnace equipped with burners or devices for injecting gas, i.e. oxygen, or pulverulent materials into the furnace
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B5/00—Treatment of metallurgical slag ; Artificial stone from molten metallurgical slag
- C04B5/06—Ingredients, other than water, added to the molten slag or to the granulating medium or before remelting; Treatment with gases or gas generating compounds, e.g. to obtain porous slag
-
- 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
-
- 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
- C21C7/068—Decarburising
-
- 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
- C21C7/072—Treatment with gases
-
- 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
- C21C2250/00—Specific additives; Means for adding material different from burners or lances
- C21C2250/02—Hot oxygen
-
- 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
-
- 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
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/40—Production or processing of lime, e.g. limestone regeneration of lime in pulp and sugar mills
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Structural Engineering (AREA)
- Carbon Steel Or Casting Steel Manufacturing (AREA)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2018221656 | 2018-11-27 | ||
| JP2018221656 | 2018-11-27 | ||
| PCT/JP2019/033574 WO2020110392A1 (ja) | 2018-11-27 | 2019-08-27 | 鋼の製造方法及びスラグの塩基度低減方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPWO2020110392A1 JPWO2020110392A1 (ja) | 2021-02-15 |
| JP6888741B2 true JP6888741B2 (ja) | 2021-06-16 |
Family
ID=70852778
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2020514773A Active JP6888741B2 (ja) | 2018-11-27 | 2019-08-27 | 鋼の製造方法及びスラグの塩基度低減方法 |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6888741B2 (ko) |
| KR (1) | KR102535289B1 (ko) |
| TW (1) | TWI722622B (ko) |
| WO (1) | WO2020110392A1 (ko) |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4945120A (ko) * | 1972-09-06 | 1974-04-30 | ||
| JPH05271740A (ja) * | 1992-03-30 | 1993-10-19 | Sumitomo Metal Ind Ltd | 転炉スラグの改質方法 |
| JPH0711322A (ja) * | 1993-06-28 | 1995-01-13 | Kawasaki Steel Corp | 有効利用が可能な転炉スラグの製造方法 |
| JP2001192721A (ja) * | 2000-01-12 | 2001-07-17 | Nippon Steel Corp | 製鋼工程で発生するスラグおよびスラグの処理方法 |
| JP4634674B2 (ja) * | 2001-09-27 | 2011-02-16 | 新日本製鐵株式会社 | 溶銑脱燐スラグの改質方法 |
| JP4571818B2 (ja) | 2004-04-21 | 2010-10-27 | 新日本製鐵株式会社 | 製鋼スラグの改質方法 |
| JP4734167B2 (ja) * | 2006-05-08 | 2011-07-27 | 新日本製鐵株式会社 | 製鋼スラグの処理方法 |
| KR102214879B1 (ko) * | 2016-04-13 | 2021-02-09 | 제이에프이 스틸 가부시키가이샤 | 슬래그의 분석 방법 및 용융 철의 정련 방법 |
-
2019
- 2019-08-27 WO PCT/JP2019/033574 patent/WO2020110392A1/ja active Application Filing
- 2019-08-27 KR KR1020217015964A patent/KR102535289B1/ko active IP Right Grant
- 2019-08-27 JP JP2020514773A patent/JP6888741B2/ja active Active
- 2019-10-28 TW TW108138779A patent/TWI722622B/zh active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020110392A1 (ja) | 2020-06-04 |
| KR102535289B1 (ko) | 2023-05-26 |
| JPWO2020110392A1 (ja) | 2021-02-15 |
| TW202020166A (zh) | 2020-06-01 |
| KR20210084563A (ko) | 2021-07-07 |
| TWI722622B (zh) | 2021-03-21 |
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