KR100999197B1 - 강의 정련 방법 - Google Patents
강의 정련 방법 Download PDFInfo
- Publication number
- KR100999197B1 KR100999197B1 KR1020080057243A KR20080057243A KR100999197B1 KR 100999197 B1 KR100999197 B1 KR 100999197B1 KR 1020080057243 A KR1020080057243 A KR 1020080057243A KR 20080057243 A KR20080057243 A KR 20080057243A KR 100999197 B1 KR100999197 B1 KR 100999197B1
- Authority
- KR
- South Korea
- Prior art keywords
- steel
- slag
- molten steel
- sol
- refining
- 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.)
- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 73
- 239000010959 steel Substances 0.000 title claims abstract description 73
- 238000000034 method Methods 0.000 title claims abstract description 38
- 238000007670 refining Methods 0.000 title claims abstract description 33
- 239000002893 slag Substances 0.000 claims abstract description 46
- 238000006477 desulfuration reaction Methods 0.000 claims description 8
- 230000023556 desulfurization Effects 0.000 claims description 8
- 229910000760 Hardened steel Inorganic materials 0.000 claims description 7
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 abstract description 29
- 229910052782 aluminium Inorganic materials 0.000 abstract description 22
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract description 22
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 15
- 239000001301 oxygen Substances 0.000 abstract description 15
- 229910052760 oxygen Inorganic materials 0.000 abstract description 15
- 235000012255 calcium oxide Nutrition 0.000 abstract description 14
- 239000000292 calcium oxide Substances 0.000 abstract description 14
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 abstract description 10
- 229910052791 calcium Inorganic materials 0.000 abstract description 10
- 239000011575 calcium Substances 0.000 abstract description 10
- 238000009749 continuous casting Methods 0.000 abstract description 7
- -1 De-Sol-Al Chemical compound 0.000 abstract 1
- 238000009489 vacuum treatment Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 12
- 238000009847 ladle furnace Methods 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 229910001021 Ferroalloy Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 2
- 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
- 229910014460 Ca-Fe Inorganic materials 0.000 description 2
- 229910014458 Ca-Si Inorganic materials 0.000 description 2
- 229910000914 Mn alloy Inorganic materials 0.000 description 2
- 229910000676 Si alloy Inorganic materials 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000005261 decarburization Methods 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 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
- 238000004458 analytical method Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000009529 body temperature measurement Methods 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000004807 desolvation Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 238000009849 vacuum degassing 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
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/0075—Treating in a ladle furnace, e.g. up-/reheating of molten steel within the ladle
-
- 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
- C21C7/0087—Treatment of slags covering the steel bath, e.g. for separating slag from the molten metal
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Analytical Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
Description
전기로 종점 슬래그 | Al2O3 | CaO | MgO | MnO | P2O5 | SIO2 | T-FeO | TiO2 | S |
함량비(%) | 6.25 | 25.24 | 3.36 | 8.31 | 0.136 | 12.22 | 30.52 | 0.045 | 0.981 |
Sol-Al (%) | Al (kg) | O2 (kg) | O2 (Nm3) | 슬래그합탕량(kg) | |
실시예 1 | 0.05 | 17 | 15 | 10.5 | 153.7 |
실시예 2 | 0.06 | 34 | 30 | 21 | 307.4 |
실시예 3 | 0.07 | 51 | 45 | 31.5 | 614.8 |
실시예 4 | 0.08 | 68 | 60 | 42 | 768.5 |
실시예 5 | 0.09 | 85 | 75 | 52.5 | 922.2 |
실시예 6 | 0.1 | 102 | 90 | 63 | 1075.9 |
실시예 7 | 0.11 | 119 | 105 | 73.5 | 1229.6 |
실시예 8 | 0.12 | 136 | 120 | 84 | 1383.3 |
실시예 9 | 0.13 | 153 | 135 | 94.5 | 1537 |
실시예 10 | 0.14 | 170 | 150 | 105 | 1690.7 |
실시예 11 | 0.15 | 187 | 165 | 115.5 | 1844.4 |
실시예 12 | 0.16 | 204 | 180 | 126 | 1998.1 |
실시예 13 | 0.17 | 221 | 195 | 136.5 | 2151.8 |
실시예 14 | 0.18 | 238 | 210 | 147 | 2305.5 |
실시예 15 | 0.19 | 255 | 225 | 157.5 | 2459.2 |
실시예 16 | 0.2 | 272 | 240 | 168 | 2612.9 |
Claims (4)
- 경처리 용강 슬래그를 Sol-Al 함량이 0.04%를 초과하는 용강과 합탕하여 탈Sol-Al 처리하는 단계를 포함하는 것을 특징으로 하는 강의 정련 방법.
- 제 1 항에 있어서,상기 탈Sol-Al 처리하는 단계는 탈황 단계 후 후속 차지 용강이 출강될 시 경처리 용강 슬래그를 합탕하는 것을 특징으로 하는 강의 정련 방법.
- 제 1 항 또는 제 2 항에 있어서,상기 탈Sol-Al 처리하는 단계는 탈황 단계 후 Sol-Al 함량이 0.04%를 초과하는 용강에 경처리 용강 슬래그를 합탕하는 것을 특징으로 하는 강의 정련 방법.
- 제 3 항에 있어서,경처리 용강 슬래그의 합탕량은 탈황 단계 후 용강의 Sol-Al의 함량 0.01% 감량에 153.7킬로그램(kg)의 비율로 합탕하는 것을 특징으로 하는 강의 정련 방법.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080057243A KR100999197B1 (ko) | 2008-06-18 | 2008-06-18 | 강의 정련 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080057243A KR100999197B1 (ko) | 2008-06-18 | 2008-06-18 | 강의 정련 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20090131396A KR20090131396A (ko) | 2009-12-29 |
KR100999197B1 true KR100999197B1 (ko) | 2010-12-07 |
Family
ID=41690617
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR1020080057243A Expired - Fee Related KR100999197B1 (ko) | 2008-06-18 | 2008-06-18 | 강의 정련 방법 |
Country Status (1)
Country | Link |
---|---|
KR (1) | KR100999197B1 (ko) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101485667B1 (ko) * | 2013-05-03 | 2015-01-22 | 주식회사 포스코 | 강판의 정련방법 |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100360093B1 (ko) | 1998-06-03 | 2002-12-18 | 주식회사 포스코 | 폐기물 발생량이 적은 용강의 제조방법 |
JP2007031790A (ja) | 2005-07-28 | 2007-02-08 | Sanyo Special Steel Co Ltd | 高Al鋼の二次精錬方法 |
-
2008
- 2008-06-18 KR KR1020080057243A patent/KR100999197B1/ko not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100360093B1 (ko) | 1998-06-03 | 2002-12-18 | 주식회사 포스코 | 폐기물 발생량이 적은 용강의 제조방법 |
JP2007031790A (ja) | 2005-07-28 | 2007-02-08 | Sanyo Special Steel Co Ltd | 高Al鋼の二次精錬方法 |
Also Published As
Publication number | Publication date |
---|---|
KR20090131396A (ko) | 2009-12-29 |
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