Nippon Kokan Kabushiki Kaisha

Michio Nakayama

Masahiro Abe

Shuzo Fukuda

Shiro Fukunaka

Shunichi Sugiyama

Koichiro Arima

Koji Matsui

Hideyuki Yoshikoshi

Osamu Tajima

Seiji Matsui

Hiroshi Fukuyo

Tsuneo Miyashita

Shuji Kaneto

Masayuki Yamazaki

Kouichiro Arima

A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combusion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce burning without oxidation.

Burner with a cylindrical body

A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce buring without oxidation.

A burner for directly flaming steel making materials to accomplish reduction without oxidation, wherein the burner comprises a plurality of combustion air outlets spaced circumferentially of the inner wall of a tubular burner tile, and fuel gas outlets disposed centrally of the burner tile, and wherein the combustion air outlets and fuel gas outlets are formed and disposed with specified jetting angles and distances to produce burning without oxidation.

Burner

Continuously treating line for steel bands having a heating furnace by

A treating furnace for manufacturing non-fired iron-bearing pellets comprising a green iron-bearing pellet inlet at one end thereof and a non-fired iron-bearing pellet outlet at the other end. Green iron-bearing pellets are continuously fed into the treating furnace through said inlet and after being heated are discharged through said outlet. The treating furnace contains at least one heating gas blowing port for blowing heating gas into the furnace and at least one heating gas discharge port for discharging said gas after it has heated the pellets. The furnace also contains a preheating zone and at least one preheating gas blowing port and at least one preheating gas discharge port to pass preheating gas through said preheating zone. The heating gas discharged from the heating gas discharge port is used as the preheating gas. The gas discharged from the heating gas discharge port is admixed with the gas discharged from the preheating gas discharge port and then the thus mixed gas is utilized as the feed preheating gas to the preheating gas blowing (inlet) port.

Method and apparatus for manufacturing non-fired iron-bearing pellet

A method and an apparatus for continuously manufacturing a non-sintered pellet, which comprises:

Method and apparatus for continuously manufacturing non-sintered pellet

A method and an apparatus for manufacturing a non-fired iron-bearing pellet, 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 thereof and having at least one heating gas blowing port and at least one heating gas discharge port, blowing through said blowing port into said treating furnace a gas containing a saturated steam at a temperature substantially equal to the heating target temperature of the green pellets, replenishing the heat of said gas lost through heat exchange with said green pellet with the condensation heat produced from condensation of at least part of the steam contained in said gas through heat exchange with said green pellets, and holding said green pellets at said target temperature for a prescribed period of time to harden said green pellets, thereby continuously manufacturing a non-fired iron-bearing pellets. The green iron-bearing pellets introduced into the furnace are first pretreated by contact with the gas which had been used to heat the already preheated pellets.

Growing community of inventors

Kawasaki, Japan

Michio Nakayama