C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
39/118, 53/6
C22B 1/02 (2006.01) C22B 1/24 (2006.01)
Patent
CA 1186153
ABSTRACT OF THE DISCLOSURE A method and an apparatus for manufacturing non-fired, iron-bearing pellets, which comprise: supplying a green, iron-bearing pellet containing a hydraulic binder and water into a treating furnace provided with a green, iron-bearing pellet inlet at an end thereof and a non- fired, iron-bearing pellet outlet at the other end there- of and having at least one heating gas blowing port and at least one heating gas discharge port. Blowing through the blowing port into the treating furnace a gas containing saturated steam at a temperature substantially equal to the target heating temperature of the green pellets, replenishing the heat of the gas as lost through heat exchange with the green pellets with the condensation heat produced from condensation of at least part of the steam contained in the gas through heat exchange with the green pellets, and maintaining the green pellets at the target temperature for a prescribed period of time to harden the green pellets, thereby continuously manufacturing non- fired, iron-bearing pellets.
400665
Fukuyo Hiroshi
Matsui Seiji
Nakayama Michio
Tajima Osamu
Yoshikoshi Hideyuki
Macrae & Co.
Nippon Kokan Kabushiki Kaisha
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