JPS56221A - Removal of harmful metal component in molten metal - Google Patents
Removal of harmful metal component in molten metalInfo
- Publication number
- JPS56221A JPS56221A JP7335279A JP7335279A JPS56221A JP S56221 A JPS56221 A JP S56221A JP 7335279 A JP7335279 A JP 7335279A JP 7335279 A JP7335279 A JP 7335279A JP S56221 A JPS56221 A JP S56221A
- Authority
- JP
- Japan
- Prior art keywords
- impurities
- molten steel
- tuyere
- inert gas
- container
- 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
- Treatment Of Steel In Its Molten State (AREA)
Abstract
PURPOSE: To remove impurities in molten metal effectively in a short time by blowing an inert gas into a molten steel containing such impurities as Pb, Zn, Bi, Te, etc., at a specific flow rate.
CONSTITUTION: In the refining container 1 provided with three electrodes 4, the tuyere 5, the porous plug 6, and the sliding nozzle 7, the molten steel 2 containing Pb, Zn, Bi, Te, etc., as impurities is put, and the molten steel 2 is heated by arc from three electrodes 4 and at the same time an inert gas is blown from the porous plug 6 into the container for heat refining. Then, the tuyere 5 is turned below the level of the molten metal 2 by tilting the container 1 and then an inert gas, e.g., Ar, N2 etc., together with a slag-forming agent and an alloy additive as needed, is blown into the tuyere 5 as a blowing rate of 200W700 N liter/minute/ton. Thus, impurities, e.g., Pb, Bi, Zn, Te, etc., in the molten steel can be removed to traces in a very short time.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7335279A JPS56221A (en) | 1979-06-11 | 1979-06-11 | Removal of harmful metal component in molten metal |
US06/100,433 US4308415A (en) | 1978-12-27 | 1979-12-05 | Process for refining a molten metal and an apparatus therefor |
US06/284,802 US4371392A (en) | 1978-12-27 | 1981-07-20 | Process for refining a molten metal |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7335279A JPS56221A (en) | 1979-06-11 | 1979-06-11 | Removal of harmful metal component in molten metal |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS56221A true JPS56221A (en) | 1981-01-06 |
JPS5748628B2 JPS5748628B2 (en) | 1982-10-16 |
Family
ID=13515679
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7335279A Granted JPS56221A (en) | 1978-12-27 | 1979-06-11 | Removal of harmful metal component in molten metal |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS56221A (en) |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5029410A (en) * | 1973-07-20 | 1975-03-25 | ||
JPS5156723A (en) * | 1974-09-20 | 1976-05-18 | Asea Ab |
-
1979
- 1979-06-11 JP JP7335279A patent/JPS56221A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5029410A (en) * | 1973-07-20 | 1975-03-25 | ||
JPS5156723A (en) * | 1974-09-20 | 1976-05-18 | Asea Ab |
Also Published As
Publication number | Publication date |
---|---|
JPS5748628B2 (en) | 1982-10-16 |
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