JPS54128416A - Preferentially desiliconizing method for hot iron - Google Patents
Preferentially desiliconizing method for hot ironInfo
- Publication number
- JPS54128416A JPS54128416A JP3704378A JP3704378A JPS54128416A JP S54128416 A JPS54128416 A JP S54128416A JP 3704378 A JP3704378 A JP 3704378A JP 3704378 A JP3704378 A JP 3704378A JP S54128416 A JPS54128416 A JP S54128416A
- Authority
- JP
- Japan
- Prior art keywords
- iron
- hot iron
- slag
- amt
- converter
- 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.)
- Pending
Links
Abstract
PURPOSE: To considerably reduce the amt. of a basic slag making material used in a steel making process in a converter or the like and the amt. of slag formed, by previously desiliconizing hot iron with iron oxide, etc. prior to oxidation refining to steel in a converter or the like.
CONSTITUTION: Hot iron manufactured in a blast furnace is first desulfurized outside the furnace. Next to the iron is added solid iron oxide of total Fe content above 60%, e.g. mill scale or sintered ore. In case the trivalent Fe content of the solid oxide is below 0.5% and above 5%, the solid oxide is supplied at a rate of 3W10 kg/min and 1W7 kg/min to 1 ton of hot iron, respectively, whereby Si in the hot iron is preferentially oxidized and removed as slag. The hot iron thus desiliconized to low Si content is then oxidized by oxygen blowing in a converter to be refined to steel by decarburization and dephosphorization. Since very little SiO2 is formed, the amt. of CaO to be added as a slag making material is considerably reduced and formation of slag is inevitably minimized.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3704378A JPS54128416A (en) | 1978-03-30 | 1978-03-30 | Preferentially desiliconizing method for hot iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3704378A JPS54128416A (en) | 1978-03-30 | 1978-03-30 | Preferentially desiliconizing method for hot iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS54128416A true JPS54128416A (en) | 1979-10-05 |
Family
ID=12486562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3704378A Pending JPS54128416A (en) | 1978-03-30 | 1978-03-30 | Preferentially desiliconizing method for hot iron |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS54128416A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54158321A (en) * | 1978-06-03 | 1979-12-14 | Nippon Steel Corp | Preferentially desiliconizing method for hot iron |
| CN108588317A (en) * | 2018-01-25 | 2018-09-28 | 河北龙凤山铸业有限公司 | a kind of ultra-pure pig iron preparation system and preparation method |
-
1978
- 1978-03-30 JP JP3704378A patent/JPS54128416A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54158321A (en) * | 1978-06-03 | 1979-12-14 | Nippon Steel Corp | Preferentially desiliconizing method for hot iron |
| CN108588317A (en) * | 2018-01-25 | 2018-09-28 | 河北龙凤山铸业有限公司 | a kind of ultra-pure pig iron preparation system and preparation method |
| CN108588317B (en) * | 2018-01-25 | 2020-12-18 | 河北龙凤山铸业有限公司 | Ultra-pure pig iron preparation system and preparation method |
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