JPS5719337A - Pellet having double structure for iron manufacture - Google Patents
Pellet having double structure for iron manufactureInfo
- Publication number
- JPS5719337A JPS5719337A JP9313880A JP9313880A JPS5719337A JP S5719337 A JPS5719337 A JP S5719337A JP 9313880 A JP9313880 A JP 9313880A JP 9313880 A JP9313880 A JP 9313880A JP S5719337 A JPS5719337 A JP S5719337A
- Authority
- JP
- Japan
- Prior art keywords
- temp
- specified
- pellets
- iron
- basicity
- 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
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
PURPOSE: To improve the softening properties of pellets at high temp. by forming each pellet with a basic core part having a specified iron content or above and a specified basicity value or below and a shell part satisfying 2 conditions of basicity and MgO content in a region above a specified temp. in specified melt-producing isothermal curves.
CONSTITUTION: Baic pellets for iron manufacture are formed with fine iron ore as starting material. Each core part has ≥64% iron content and ≤1.9 basicity represented by CaO/SiO2. Each shell part is allowed to satisfy 2 conditions of the ratio of CaO/SiO2 and MgO content in a region above 1425°C in melt-producing isothermal curves shown by the figure. Thus, the softening starting temp. of the core part is raised, and delayed reduction occurs hardly. Even if the iron content of the shell part is changed somewhat, the melting-down temp. is stably maintained at a high level, so the softening properties of the pellets at high temp. are improved.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9313880A JPS5719337A (en) | 1980-07-07 | 1980-07-07 | Pellet having double structure for iron manufacture |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9313880A JPS5719337A (en) | 1980-07-07 | 1980-07-07 | Pellet having double structure for iron manufacture |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5719337A true JPS5719337A (en) | 1982-02-01 |
Family
ID=14074158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9313880A Pending JPS5719337A (en) | 1980-07-07 | 1980-07-07 | Pellet having double structure for iron manufacture |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5719337A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01133748A (en) * | 1987-11-20 | 1989-05-25 | Canon Inc | Liquid jet recording head |
KR100504392B1 (en) * | 2000-10-11 | 2005-07-28 | 주식회사 포스코 | A cold bonded pellet considering high temperature properties |
-
1980
- 1980-07-07 JP JP9313880A patent/JPS5719337A/en active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01133748A (en) * | 1987-11-20 | 1989-05-25 | Canon Inc | Liquid jet recording head |
KR100504392B1 (en) * | 2000-10-11 | 2005-07-28 | 주식회사 포스코 | A cold bonded pellet considering high temperature properties |
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