JPS6238406B2 - - Google Patents

Info

Publication number: JPS6238406B2
Authority: JP; Japan
Prior art keywords: hot metal; desulfurization; flux; cao; desiliconization
Prior art date: 1981-06-17
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

Application number

JP9438981A

Other languages

English (en)

Japanese (ja)

Other versions

JPS57210907A (en

Inventor

Kiichi Narita

Takehisa Makino

Hiroshi Matsumoto

Akihide Hikosaka

Toshasu Oonishi

Wataru Takagi

Junichiro Katsuta

Masatoshi Sasaki

Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Kobe Steel Ltd

Original Assignee

Kobe Steel Ltd

Priority date (The priority date 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 date listed.)

1981-06-17

Filing date

1981-06-17

Publication date

1987-08-18

1981-06-17 Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd

1981-06-17 Priority to JP9438981A priority Critical patent/JPS57210907A/ja

1982-12-24 Publication of JPS57210907A publication Critical patent/JPS57210907A/ja

1987-08-18 Publication of JPS6238406B2 publication Critical patent/JPS6238406B2/ja

Status Granted legal-status Critical Current

Links

229910052751 metal Inorganic materials 0.000 claims description 72
239000002184 metal Substances 0.000 claims description 72
238000006477 desulfuration reaction Methods 0.000 claims description 48
230000023556 desulfurization Effects 0.000 claims description 48
230000004907 flux Effects 0.000 claims description 43
238000007664 blowing Methods 0.000 claims description 31
239000001301 oxygen Substances 0.000 claims description 25
229910052760 oxygen Inorganic materials 0.000 claims description 25
QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 24
238000000034 method Methods 0.000 claims description 18
238000006243 chemical reaction Methods 0.000 claims description 16
239000007789 gas Substances 0.000 claims description 11
239000002904 solvent Substances 0.000 claims description 7
230000003009 desulfurizing effect Effects 0.000 claims description 2
UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 21
IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 13
229910004298 SiO 2 Inorganic materials 0.000 description 13
239000002893 slag Substances 0.000 description 13
239000011572 manganese Substances 0.000 description 10
238000011282 treatment Methods 0.000 description 10
238000007254 oxidation reaction Methods 0.000 description 9
230000003647 oxidation Effects 0.000 description 8
239000011734 sodium Substances 0.000 description 7
238000009628 steelmaking Methods 0.000 description 7
229910052799 carbon Inorganic materials 0.000 description 6
230000007423 decrease Effects 0.000 description 6
229910052748 manganese Inorganic materials 0.000 description 6
238000002844 melting Methods 0.000 description 6
230000008018 melting Effects 0.000 description 6
229910004261 CaF 2 Inorganic materials 0.000 description 5
MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 5
238000002347 injection Methods 0.000 description 5
239000007924 injection Substances 0.000 description 5
239000000203 mixture Substances 0.000 description 5
229910052757 nitrogen Inorganic materials 0.000 description 5
XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
239000012159 carrier gas Substances 0.000 description 4
229910001882 dioxygen Inorganic materials 0.000 description 4
230000000694 effects Effects 0.000 description 4
238000012545 processing Methods 0.000 description 4
238000007670 refining Methods 0.000 description 4
229910000831 Steel Inorganic materials 0.000 description 3
230000005587 bubbling Effects 0.000 description 3
WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 3
238000005261 decarburization Methods 0.000 description 3
229910001873 dinitrogen Inorganic materials 0.000 description 3
238000002474 experimental method Methods 0.000 description 3
230000001590 oxidative effect Effects 0.000 description 3
238000011160 research Methods 0.000 description 3
239000010959 steel Substances 0.000 description 3
239000002699 waste material Substances 0.000 description 3
229910000805 Pig iron Inorganic materials 0.000 description 2
CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
239000000654 additive Substances 0.000 description 2
238000013019 agitation Methods 0.000 description 2
229910001634 calcium fluoride Inorganic materials 0.000 description 2
239000003795 chemical substances by application Substances 0.000 description 2
230000003628 erosive effect Effects 0.000 description 2
229910052742 iron Inorganic materials 0.000 description 2
239000007800 oxidant agent Substances 0.000 description 2
BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
230000009257 reactivity Effects 0.000 description 2
238000003756 stirring Methods 0.000 description 2
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
235000008733 Citrus aurantifolia Nutrition 0.000 description 1
229910001341 Crude steel Inorganic materials 0.000 description 1
PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
235000011941 Tilia x europaea Nutrition 0.000 description 1
230000000996 additive effect Effects 0.000 description 1
150000001339 alkali metal compounds Chemical class 0.000 description 1
230000008901 benefit Effects 0.000 description 1
229910021538 borax Inorganic materials 0.000 description 1
238000002485 combustion reaction Methods 0.000 description 1
238000009749 continuous casting Methods 0.000 description 1
230000008094 contradictory effect Effects 0.000 description 1
238000007796 conventional method Methods 0.000 description 1
229910001610 cryolite Inorganic materials 0.000 description 1
238000000354 decomposition reaction Methods 0.000 description 1
230000003247 decreasing effect Effects 0.000 description 1
238000011161 development Methods 0.000 description 1
238000010586 diagram Methods 0.000 description 1
238000005516 engineering process Methods 0.000 description 1
239000010436 fluorite Substances 0.000 description 1
230000004927 fusion Effects 0.000 description 1
230000017525 heat dissipation Effects 0.000 description 1
239000002440 industrial waste Substances 0.000 description 1
239000004615 ingredient Substances 0.000 description 1
239000004571 lime Substances 0.000 description 1
XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 1
229910052808 lithium carbonate Inorganic materials 0.000 description 1
238000011866 long-term treatment Methods 0.000 description 1
239000000463 material Substances 0.000 description 1
230000007246 mechanism Effects 0.000 description 1
238000002156 mixing Methods 0.000 description 1
150000002926 oxygen Chemical class 0.000 description 1
229910000027 potassium carbonate Inorganic materials 0.000 description 1
238000006722 reduction reaction Methods 0.000 description 1
238000010079 rubber tapping Methods 0.000 description 1
229910052710 silicon Inorganic materials 0.000 description 1
239000010703 silicon Substances 0.000 description 1
229910000029 sodium carbonate Inorganic materials 0.000 description 1
235000010339 sodium tetraborate Nutrition 0.000 description 1
VRSRNLHMYUACMN-UHFFFAOYSA-H trilithium;hexafluoroaluminum(3-) Chemical compound [Li+].[Li+].[Li+].[F-].[F-].[F-].[F-].[F-].[F-].[Al+3] VRSRNLHMYUACMN-UHFFFAOYSA-H 0.000 description 1
BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-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
- C21C1/00—Refining of pig-iron; Cast iron
- C21C1/02—Dephosphorising or desulfurising

Landscapes

Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Materials Engineering (AREA)
Metallurgy (AREA)
Organic Chemistry (AREA)
Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)

JP9438981A 1981-06-17 1981-06-17 Desiliconizing and desulfurizing method for molten iron Granted JPS57210907A (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
JP9438981A JPS57210907A (en)	1981-06-17	1981-06-17	Desiliconizing and desulfurizing method for molten iron

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
JP9438981A JPS57210907A (en)	1981-06-17	1981-06-17	Desiliconizing and desulfurizing method for molten iron

Publications (2)

Publication Number	Publication Date
JPS57210907A JPS57210907A (en)	1982-12-24
JPS6238406B2 true JPS6238406B2 (cs)	1987-08-18

Family

ID=14108922

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
JP9438981A Granted JPS57210907A (en)	1981-06-17	1981-06-17	Desiliconizing and desulfurizing method for molten iron

Country Status (1)

Country	Link
JP (1)	JPS57210907A (cs)

1981
- 1981-06-17 JP JP9438981A patent/JPS57210907A/ja active Granted

Also Published As

Publication number	Publication date
JPS57210907A (en)	1982-12-24

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