JPS6250545B2 - - Google Patents
Info
- Publication number
- JPS6250545B2 JPS6250545B2 JP594885A JP594885A JPS6250545B2 JP S6250545 B2 JPS6250545 B2 JP S6250545B2 JP 594885 A JP594885 A JP 594885A JP 594885 A JP594885 A JP 594885A JP S6250545 B2 JPS6250545 B2 JP S6250545B2
- Authority
- JP
- Japan
- Prior art keywords
- chromium
- slag
- reduction
- molten
- molten 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.)
- Expired
Links
- 239000011651 chromium Substances 0.000 claims description 60
- 229910052804 chromium Inorganic materials 0.000 claims description 53
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 52
- 239000002893 slag Substances 0.000 claims description 38
- 229910052751 metal Inorganic materials 0.000 claims description 24
- 239000002184 metal Substances 0.000 claims description 24
- 238000007664 blowing Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 18
- 239000003575 carbonaceous material Substances 0.000 claims description 12
- WGLPBDUCMAPZCE-UHFFFAOYSA-N Trioxochromium Chemical compound O=[Cr](=O)=O WGLPBDUCMAPZCE-UHFFFAOYSA-N 0.000 claims description 10
- 229910000423 chromium oxide Inorganic materials 0.000 claims description 10
- 239000002994 raw material Substances 0.000 claims description 10
- 238000006243 chemical reaction Methods 0.000 claims description 9
- 238000004519 manufacturing process Methods 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 8
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- UOUJSJZBMCDAEU-UHFFFAOYSA-N chromium(3+);oxygen(2-) Chemical class [O-2].[O-2].[O-2].[Cr+3].[Cr+3] UOUJSJZBMCDAEU-UHFFFAOYSA-N 0.000 claims description 5
- 230000004907 flux Effects 0.000 claims description 3
- 230000001590 oxidative effect Effects 0.000 claims description 2
- 239000010935 stainless steel Substances 0.000 description 15
- 229910001220 stainless steel Inorganic materials 0.000 description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 13
- 229910052799 carbon Inorganic materials 0.000 description 12
- 229910000604 Ferrochrome Inorganic materials 0.000 description 11
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 9
- 239000000843 powder Substances 0.000 description 8
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 7
- 239000000571 coke Substances 0.000 description 7
- 229910052596 spinel Inorganic materials 0.000 description 7
- 239000011029 spinel Substances 0.000 description 7
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 238000005261 decarburization Methods 0.000 description 6
- 229910052742 iron Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000000395 magnesium oxide Substances 0.000 description 5
- 238000002844 melting Methods 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000000047 product Substances 0.000 description 5
- 229910000599 Cr alloy Inorganic materials 0.000 description 4
- 238000003723 Smelting Methods 0.000 description 4
- 239000000788 chromium alloy Substances 0.000 description 4
- 230000008018 melting Effects 0.000 description 4
- 238000007670 refining Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 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
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000010405 reoxidation reaction Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 238000005255 carburizing Methods 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- -1 hot metal Chemical compound 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012768 molten material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000009628 steelmaking Methods 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
- 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
- C21C7/0685—Decarburising of stainless steel
-
- 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
-
- 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
- C21C5/30—Regulating or controlling the blowing
- C21C5/34—Blowing through the bath
Landscapes
- 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)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP594885A JPS61166910A (ja) | 1985-01-18 | 1985-01-18 | クロム含有合金の製造方法 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP594885A JPS61166910A (ja) | 1985-01-18 | 1985-01-18 | クロム含有合金の製造方法 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61166910A JPS61166910A (ja) | 1986-07-28 |
| JPS6250545B2 true JPS6250545B2 (US08197722-20120612-C00042.png) | 1987-10-26 |
Family
ID=11625115
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP594885A Granted JPS61166910A (ja) | 1985-01-18 | 1985-01-18 | クロム含有合金の製造方法 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61166910A (US08197722-20120612-C00042.png) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61253311A (ja) * | 1985-05-01 | 1986-11-11 | Nisshin Steel Co Ltd | クロム鉱石の溶融還元法 |
| JPH07100807B2 (ja) * | 1988-02-24 | 1995-11-01 | 川崎製鉄株式会社 | 低ｓ含クロム溶鉄の製造方法 |
| JP2683406B2 (ja) * | 1989-03-07 | 1997-11-26 | 川崎製鉄株式会社 | ステンレス鋼の溶製方法 |
| AU685713B2 (en) * | 1995-09-28 | 1998-01-22 | Kawasaki Steel Corporation | Chromium ore smelting reduction process |
| MXPA06012456A (es) * | 2004-05-18 | 2007-03-30 | Holcim Ltd | Metodo para reducir cr de escorias metalurgicas que contienen cr. |
| JP6090606B2 (ja) * | 2014-03-24 | 2017-03-08 | Ｊｆｅスチール株式会社 | 含クロム酸化物の溶融還元方法 |
| CN103911479B (zh) * | 2014-04-22 | 2016-01-20 | 武汉钢铁(集团)公司 | 90t顶底复吹转炉中铬矿直接还原合金化的方法 |
| CN105483315B (zh) * | 2016-01-19 | 2017-07-04 | 攀钢集团攀枝花钢铁研究院有限公司 | 半钢炼钢转炉炉内铬矿直接合金化的方法 |
-
1985
- 1985-01-18 JP JP594885A patent/JPS61166910A/ja active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61166910A (ja) | 1986-07-28 |
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