JPS54119302A - Self-collapsible pellets or briquettes and production of the same - Google Patents

Self-collapsible pellets or briquettes and production of the same

Info

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
Application number
JP2729778A
Other languages
Japanese (ja)
Inventor
Kiichi Narita
Masahiro Maekawa
Ichiro Shigaki
Mineo Sawada
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kobe Steel Ltd
Original Assignee
Kobe Steel Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP2729778A priority Critical patent/JPS54119302A/en
Publication of JPS54119302A publication Critical patent/JPS54119302A/en
Pending legal-status Critical Current

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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
JP2729778A 1978-03-09 1978-03-09 Self-collapsible pellets or briquettes and production of the same Pending JPS54119302A (en)

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)

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