Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
REDUCED PELLET
Document Type and Number:
Japanese Patent JP2000109937
Kind Code:
A
Abstract:

To provide a reduced pellet having the strength suitable to the treatment.

Residual carbon in the reduced pellet 40 is regulated to ≤1%. In a production of the residual pellet 40, firstly, green pellet 30, in which metallic oxide and reducing agent are mixed and granulated, is heated to high temp. in a heating zone 22 of a rotary hearth furnace 10. The metallic oxide in this heated green pellet 30 is reduced and metallized by allowing the atmospheric gas to contact with a carbon base reducing agent in this pellet 30 in a reducing zone 24. In this way, the reduced pellet 40 having ≤1% residual carbon, is obtd. The crushing strength of the reduced pellet 40 having ≤1% residual carbon secures ≥50 kgf/cm2 collapsing strength suitable to the treatment of the pellet 40.


Inventors:
MATSUI KOJI
TERAKADO EIJI
Application Number:
JP27906398A
Publication Date:
April 18, 2000
Filing Date:
September 30, 1998
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
DAIDO STEEL CO LTD
International Classes:
C22B1/16; (IPC1-7): C22B1/16
Attorney, Agent or Firm:
Kimoto Yamamoto