JPS6250543B2 - - Google Patents
Info
- Publication number
- JPS6250543B2 JPS6250543B2 JP58088992A JP8899283A JPS6250543B2 JP S6250543 B2 JPS6250543 B2 JP S6250543B2 JP 58088992 A JP58088992 A JP 58088992A JP 8899283 A JP8899283 A JP 8899283A JP S6250543 B2 JPS6250543 B2 JP S6250543B2
- Authority
- JP
- Japan
- Prior art keywords
- slag
- chromium
- stainless steel
- generated
- blowing
- 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
Links
- 239000002893 slag Substances 0.000 claims description 60
- 239000011651 chromium Substances 0.000 claims description 59
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 53
- 229910052804 chromium Inorganic materials 0.000 claims description 49
- 238000007664 blowing Methods 0.000 claims description 32
- 229910052751 metal Inorganic materials 0.000 claims description 32
- 239000002184 metal Substances 0.000 claims description 32
- 239000010935 stainless steel Substances 0.000 claims description 30
- 229910001220 stainless steel Inorganic materials 0.000 claims description 30
- 238000004519 manufacturing process Methods 0.000 claims description 26
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 22
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 22
- 239000003575 carbonaceous material Substances 0.000 claims description 21
- 239000002253 acid Substances 0.000 claims description 19
- 238000000034 method Methods 0.000 claims description 15
- 239000002994 raw material Substances 0.000 claims description 14
- 238000003723 Smelting Methods 0.000 claims description 13
- 230000009467 reduction Effects 0.000 claims description 13
- 239000000463 material Substances 0.000 claims description 12
- 238000003756 stirring Methods 0.000 claims description 7
- 230000008018 melting Effects 0.000 claims description 6
- 230000008569 process Effects 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 16
- 238000006722 reduction reaction Methods 0.000 description 13
- 229910000604 Ferrochrome Inorganic materials 0.000 description 11
- 239000000428 dust Substances 0.000 description 11
- 229910052799 carbon Inorganic materials 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 239000000292 calcium oxide Substances 0.000 description 8
- 235000012255 calcium oxide Nutrition 0.000 description 8
- 239000000571 coke Substances 0.000 description 8
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 7
- 229910002091 carbon monoxide Inorganic materials 0.000 description 7
- 238000005261 decarburization Methods 0.000 description 7
- 239000010802 sludge Substances 0.000 description 7
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- 238000000227 grinding Methods 0.000 description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 5
- 235000011941 Tilia x europaea Nutrition 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 5
- 239000004571 lime Substances 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000008188 pellet Substances 0.000 description 4
- 238000011946 reduction process Methods 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000010309 melting process Methods 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 238000010405 reoxidation reaction Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 229910000599 Cr alloy Inorganic materials 0.000 description 1
- 229910017082 Fe-Si Inorganic materials 0.000 description 1
- 229910017133 Fe—Si Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 239000000788 chromium alloy Substances 0.000 description 1
- UOUJSJZBMCDAEU-UHFFFAOYSA-N chromium(3+);oxygen(2-) Chemical class [O-2].[O-2].[O-2].[Cr+3].[Cr+3] UOUJSJZBMCDAEU-UHFFFAOYSA-N 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 1
- 235000013980 iron oxide Nutrition 0.000 description 1
- VBMVTYDPPZVILR-UHFFFAOYSA-N iron(2+);oxygen(2-) Chemical class [O-2].[Fe+2] VBMVTYDPPZVILR-UHFFFAOYSA-N 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000005554 pickling Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 239000003507 refrigerant Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- C21C5/005—Manufacture of stainless steel
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8899283A JPS59215414A (ja) | 1983-05-20 | 1983-05-20 | ステンレス鋼製造時の酸化クロムを含有する発生物の処理方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8899283A JPS59215414A (ja) | 1983-05-20 | 1983-05-20 | ステンレス鋼製造時の酸化クロムを含有する発生物の処理方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59215414A JPS59215414A (ja) | 1984-12-05 |
| JPS6250543B2 true JPS6250543B2 (ko) | 1987-10-26 |
Family
ID=13958301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8899283A Granted JPS59215414A (ja) | 1983-05-20 | 1983-05-20 | ステンレス鋼製造時の酸化クロムを含有する発生物の処理方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59215414A (ko) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61183406A (ja) * | 1985-02-07 | 1986-08-16 | Daiichi Nenryo Kogyo Kk | 製鉄．製鋼用非鉄金属成分添加材 |
| JPS62167810A (ja) * | 1986-01-20 | 1987-07-24 | Kobe Steel Ltd | 溶鉄へのクロムの添加方法 |
| US5342589A (en) * | 1992-09-22 | 1994-08-30 | Minnesota Mining And Manufacturing Company | Process for converting chromium dioxide magnetic pigment particles into nonmagnetic chromium (III) oxide |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53119210A (en) * | 1977-03-28 | 1978-10-18 | Kawasaki Steel Co | Method of recovering and utilizing chrome from chromeecontaining steel slag |
-
1983
- 1983-05-20 JP JP8899283A patent/JPS59215414A/ja active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53119210A (en) * | 1977-03-28 | 1978-10-18 | Kawasaki Steel Co | Method of recovering and utilizing chrome from chromeecontaining steel slag |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59215414A (ja) | 1984-12-05 |
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