JPS57161021A - Quick-melting method in arc furnace - Google Patents
Quick-melting method in arc furnaceInfo
- Publication number
- JPS57161021A JPS57161021A JP4678181A JP4678181A JPS57161021A JP S57161021 A JPS57161021 A JP S57161021A JP 4678181 A JP4678181 A JP 4678181A JP 4678181 A JP4678181 A JP 4678181A JP S57161021 A JPS57161021 A JP S57161021A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- blown
- reducing
- scrap iron
- period
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
PURPOSE: To increase the rate of dissolution of scrap iron remaining near the hearth of the cold zone of an arc furnace by blowing an oxidizing gas, a reducing gas and an inert gas respectively selectively from the position blow the slag line of the cold zone according to the respective operation stages from charging of scrap ion up to tapping.
CONSTITUTION: Right after charging of scrap iron, that is, from a firing period till a main melting period, an oxidizing gas and a reducing gas are blown into the furnace through nozzles 8, and these are blown directly to the scrap iron 4 remaining in a cold zone 3 to accelerate the melting of the scrap iron 4 by the heat of combustion. Next, since the formation of the well of molten steel 9 in a hearth 7, the oxidizing gas and the reducing ga or an inert gas or the inert gas and a recarburizer are blown through the nozzles 8 to accelerate the melting of the undissolved scrap iron 4. Next, in the case of reducing and refining the iron in an arc furnace, the inert gas or the reducing gas is blown into the molten steel 9 in the period from the end period of a heating till tapping, whereby the steel 9 is agitated and the refining is accelerated. In case double pipes are used for the nozzles 8, the oxidizing gas is blown through the inside pipes and the reducing gas through the outside pipes.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4678181A JPS57161021A (en) | 1981-03-30 | 1981-03-30 | Quick-melting method in arc furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4678181A JPS57161021A (en) | 1981-03-30 | 1981-03-30 | Quick-melting method in arc furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57161021A true JPS57161021A (en) | 1982-10-04 |
| JPS6254164B2 JPS6254164B2 (en) | 1987-11-13 |
Family
ID=12756864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4678181A Granted JPS57161021A (en) | 1981-03-30 | 1981-03-30 | Quick-melting method in arc furnace |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS57161021A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01162576U (en) * | 1988-04-26 | 1989-11-13 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5092807A (en) * | 1973-12-14 | 1975-07-24 |
-
1981
- 1981-03-30 JP JP4678181A patent/JPS57161021A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5092807A (en) * | 1973-12-14 | 1975-07-24 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6254164B2 (en) | 1987-11-13 |
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