JPS563610A - Molten iron pretreating method - Google Patents
Molten iron pretreating methodInfo
- Publication number
- JPS563610A JPS563610A JP7668279A JP7668279A JPS563610A JP S563610 A JPS563610 A JP S563610A JP 7668279 A JP7668279 A JP 7668279A JP 7668279 A JP7668279 A JP 7668279A JP S563610 A JPS563610 A JP S563610A
- Authority
- JP
- Japan
- Prior art keywords
- molten iron
- iron
- per
- sintered ore
- added
- 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.)
- Granted
Links
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
PURPOSE: To pre-refine the Si, P, etc. in molten iron, decrease the refining load at the iron making refining by a converter and considerably decrease the amount of the slag formed by adding the specific amounts of iron oxide and CaO to the molten iron and stirring the same, and further adding the specific amount of iron oxide thereto.
CONSTITUTION: Molten iron 2 is put in a molten iron pan 1 and an impeller 3 is rotated to stir the molten iron 2. At the same time, quicklime and sintered ore of iron and steel ore is charged thereto from a hopper 4. In this case, the sintered ore is added at rates of 2.0W5.0kg(Wo) when converted to the oxygen contained therein per Si 1% contained in the molten iron per 1 ton of the molten iron and the quicklime at rates of 3W5kg(Wxao) so that Wo/Wcao becomes 0.5W1.5 and CaO is added until its addition amount becomes 24W32kg per Si 1% per 1 ton of the molten iron, whereby the Si of the molten iron is desiliconized to 0.1% or less. Next, sintered ore is added 2W10kg in oxygen equivalent under the same conditions, whereby the molten iron is dephosphrized. The basicity of the slag of this times is 1W1.5 and the amounts of T and Fe are 3W10%.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7668279A JPS6059961B2 (en) | 1979-06-20 | 1979-06-20 | Hot metal pretreatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7668279A JPS6059961B2 (en) | 1979-06-20 | 1979-06-20 | Hot metal pretreatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS563610A true JPS563610A (en) | 1981-01-14 |
| JPS6059961B2 JPS6059961B2 (en) | 1985-12-27 |
Family
ID=13612197
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7668279A Expired JPS6059961B2 (en) | 1979-06-20 | 1979-06-20 | Hot metal pretreatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6059961B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58126910A (en) * | 1982-01-21 | 1983-07-28 | Nippon Steel Corp | Dephosphorizing method of molten metal |
| JP2011190532A (en) * | 2010-02-22 | 2011-09-29 | Kobe Steel Ltd | Dephosphorization treatment method of molten iron in mixer car |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01169350A (en) * | 1987-12-25 | 1989-07-04 | Ngk Insulators Ltd | Oxygen sensor |
-
1979
- 1979-06-20 JP JP7668279A patent/JPS6059961B2/en not_active Expired
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58126910A (en) * | 1982-01-21 | 1983-07-28 | Nippon Steel Corp | Dephosphorizing method of molten metal |
| JPH0255485B2 (en) * | 1982-01-21 | 1990-11-27 | Nippon Steel Corp | |
| JP2011190532A (en) * | 2010-02-22 | 2011-09-29 | Kobe Steel Ltd | Dephosphorization treatment method of molten iron in mixer car |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6059961B2 (en) | 1985-12-27 |
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