JPS54119302A - Self-collapsible pellets or briquettes and production of the same - Google Patents
Self-collapsible pellets or briquettes and production of the sameInfo
- Publication number
- JPS54119302A JPS54119302A JP2729778A JP2729778A JPS54119302A JP S54119302 A JPS54119302 A JP S54119302A JP 2729778 A JP2729778 A JP 2729778A JP 2729778 A JP2729778 A JP 2729778A JP S54119302 A JPS54119302 A JP S54119302A
- Authority
- JP
- Japan
- Prior art keywords
- pellets
- briquettes
- hematite
- collapsible
- self
- 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 obtain pellets or briquettes of superior collapsibility having the specified hematite phase by performing firing of pellets or briquettes for iron making raw materials within the specified temperature range then slow cooling in the case of making said pellets or briquettes.
CONSTITUTION: Iron ore powder is added with water and is pelletized to sizes of about 5 to 20 mm, after which pellets are preheated and dried then fired. In this case, the slow cooling is performed after the firing was performed at temperatures of 1300 to 1450°C. Then, the hematite in the pellets thermally decomposes to form the magnetite phase containing the Al, Ti, Mn, etc. mixed in the ore powder. Next, the pellets are reoxidized, by which the deposits such as Al2O3, TiO2, MnO, etc. are finely dispersed and the pellets having the hematite phase wherein their total concentrations are 1 to 6 wt% may be obtained. The pellets are provided with the required strength and collapsibility.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2729778A JPS54119302A (en) | 1978-03-09 | 1978-03-09 | Self-collapsible pellets or briquettes and production of the same |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2729778A JPS54119302A (en) | 1978-03-09 | 1978-03-09 | Self-collapsible pellets or briquettes and production of the same |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS54119302A true JPS54119302A (en) | 1979-09-17 |
Family
ID=12217145
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2729778A Pending JPS54119302A (en) | 1978-03-09 | 1978-03-09 | Self-collapsible pellets or briquettes and production of the same |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54119302A (en) |
-
1978
- 1978-03-09 JP JP2729778A patent/JPS54119302A/en active Pending
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