JPS55122808A - Production of raw material iron powder for deoxidizing agent - Google Patents
Production of raw material iron powder for deoxidizing agentInfo
- Publication number
- JPS55122808A JPS55122808A JP2909079A JP2909079A JPS55122808A JP S55122808 A JPS55122808 A JP S55122808A JP 2909079 A JP2909079 A JP 2909079A JP 2909079 A JP2909079 A JP 2909079A JP S55122808 A JPS55122808 A JP S55122808A
- Authority
- JP
- Japan
- Prior art keywords
- aqueous solution
- powder
- iron
- reducing
- sagger
- 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
Abstract
PURPOSE: To produce iron powder possessing excellent deoxidizing performance, by roughly reducing powder of iron oxide with reducing agent such as powder coke at high temperature, grinding finely, tempering in hydrogen atmosphere, and covering the surface with metal halide aqueous solution or aqueous solution of acid, and drying in vacuum.
CONSTITUTION: After grinding iron oxide material such as mill scale, it is charged in a sagger in layers with reducing agent of powder coke. Putting a lid on the sagger, the material is heated in a tunnel furnace to 1000W1200°C to be roughly reduced to produce a cake-form sponge iron. This sponge iron is ground to 35W 100-mesh size or below until the apparent specific gravity is 2.0W2.5kg/cm2. This fine ground sponge iron is tempered at 600W750°C in reducing atmosphere mainly composed of hydrogen. After cooling, the surface is sufficiently covered with aqueous solution of acid or metal halide aqueous solution by ordinary method, and is dried in vacuum. Thus is produced iron powder for deoxidation, having a strong affinity for oxygen.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2909079A JPS55122808A (en) | 1979-03-13 | 1979-03-13 | Production of raw material iron powder for deoxidizing agent |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2909079A JPS55122808A (en) | 1979-03-13 | 1979-03-13 | Production of raw material iron powder for deoxidizing agent |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS55122808A true JPS55122808A (en) | 1980-09-20 |
JPS5761802B2 JPS5761802B2 (en) | 1982-12-27 |
Family
ID=12266644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2909079A Granted JPS55122808A (en) | 1979-03-13 | 1979-03-13 | Production of raw material iron powder for deoxidizing agent |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS55122808A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0490848A (en) * | 1990-08-03 | 1992-03-24 | Toyo Seikan Kaisha Ltd | Oxygen absorbing agent and resin composition using the same, and film, sheet, or wrapping container consisting of said resin composition |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS491421A (en) * | 1972-04-25 | 1974-01-08 | ||
JPS4938867A (en) * | 1972-08-17 | 1974-04-11 |
-
1979
- 1979-03-13 JP JP2909079A patent/JPS55122808A/en active Granted
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS491421A (en) * | 1972-04-25 | 1974-01-08 | ||
JPS4938867A (en) * | 1972-08-17 | 1974-04-11 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0490848A (en) * | 1990-08-03 | 1992-03-24 | Toyo Seikan Kaisha Ltd | Oxygen absorbing agent and resin composition using the same, and film, sheet, or wrapping container consisting of said resin composition |
Also Published As
Publication number | Publication date |
---|---|
JPS5761802B2 (en) | 1982-12-27 |
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