Nkk Corporation

Nkc Corporation

Tatsuro Ariyama

Minoru Asanuma

Mitsuhiro Fujii

Yukihiko Asakawa

Koichi Tomioka

Tsutomu Shikada

Hiromi Nakamura

Ryota Murai

Michitaka Sato

Masahiro Matsuura

Kazumasa Wakimoto

Hidetoshi Noda

Shinichi Isozaki

Genji Kanatani

Iwao Okochi

Yutuka Yamada

Hiroki Ishiguro

Takanori Inoguchi

Noboru Sakamoto

Kenzo Yamada

Haruhito Tsuboi

Takashi Sumigama

Kenichi Tezuka

Masahiro Matsuo

Atsushi Yamaguchi

Hitoshi Kawata

Yoshiyuki Kitano

Michinori Hattori

Tetsuo Akashi

Tsuneo Nagaoka

Takeshi Konishi

Sakae Arakawa

Jiro Mase

Hideaki Tsukiji

Toshihiko Okada

Jun Ishii

A method and an apparatus for decomposing halogenated hydrocarbon gas economically and stably without relying on any special treatment and without generating dioxins. A catalyst to decompose halogenated hydrocarbon gas, 4, is supported on a carrier 3. A target gas, which contains the halogenated hydrocarbon gas, is passed through the carrier 3, while heating the carrier 3 using an electromagnetic induction heating mechanism 5, 6.

Method of decomposing halogenated hydrocarbon gas

A method of blowing a synthetic resin material into a furnace comprising preparing a synthetic resin material having an average specific surface area of at least 50 m,/kg; and blowing the synthetic resin material from tuyeres of a shaft furnace for ironmaking.

Method of blowing synthetic resin into a furnace

A method for disposing synthetic resinous material comprises: dechlorinating a synthetic resinous material by heating the synthetic resinous material and decomposing the same; and supplying the synthetic resinous material into the furnace as a fuel or a reducing agent. An apparatus comprises: a chlorine removing means for dechlorinating the synthetic resinous material by heating the synthetic resinous material; and a pulverizer for pulverizing the dechlorinated synthetic resinous material, a supply means for supplying the processed synthetic resinous material into a furnace.

Apparatus for disposing synthetic resinous materials

Scrap melting process

Method for disposing synthetic resinous material

A method for blowing a synthetic resin material into a furnace which comprises processing film-shaped synthetic resins into a first granular resin material; crushing non-film-shaped synthetic resins into a second granular resin material; pneumatically feeding the first granular resin material and the second granular resin material to a furnace; and blowing the first and second granular resin material into the furnace.

Method of blowing synthetic resin into furnace and apparatus therefor

Provided herein is a scrap melting method capable of both producing a molten iron by efficiently melting scrap and producing a large amount of high calorie exhaust gas having a high utility value as a fuel gas and at the same time capable of performing such operation at a low production cost. Scrap, the source of iron, and coke are charged into a shaft furnace and pulverized coal and oxygen are injected into the furnace from a burner provided at the tuyere portion; in such injection of the pulverized coal and oxygen, the pulverized coal is injected from the center or in the vicinity thereof in diametrical direction of the burner and the oxygen is injected from the surrounding portion thereof to mix the two, thereby rapidly burning the pulverized coal in a combustion zone formed beyond the tuyere; and the scrap is melted by the sensible heat of thus generated combustion gas to produce a molten iron and the combustion gas is collected as a fuel gas without causing a significant post combustion of the combustion gas.

Scrap melting method

A method for controlling a flow rate of gas for prereducing ore comprises the steps of prereducing ore in a prereduction furnace having a fluidized bed with a gas generated in a smelting reduction furnace and controlling a pressure of gas generated in the smelting reduction furnace and introduced into the prereduction furnace, thereby controlling the actual flow rate of gas introduced into the prereduction furnace. An apparatus for controlling a flow rate of gas for prereducing ore comprises a flow passage for introducing gas generated in a smelting reduction furnace into a prereduction furnace and a gas pressure control valve positioned in the flow passage.

Method for controlling a flow rate of gas for prereducing ore and

A prereduction furnace of a smelting reduction facility comprises a fluidizing prereduction chamber in the upper part of the prereduction furnace wherein iron ores are fed and prereduced, a gas blowing chamber installed in the lower part of the prereduction furnace wherein a reducing gas is fed, a distributor for separating the fluidizing prereduction chamber from the gas blowing chamber, and a discharge pipe for discharging the prereduced ore from the fluidizing prereduction chamber. The distributor includes a body of refractory material, a metal plate installed on the bottom of the body, nozzles passing through the body and the metal plate, metallic pipes inserted in the nozzles, and cooling pipes connected to the metal plate. A metallic box may be installed below the metal plate for providing passages for gas flow. A bottom plate may be installed spacedly below the metal plate, with nozzles passing therethrough. The distributor may comprise a rigid thick plate and a refractory layer thereon.

Prereduction furnace of a smelting reduction facility of iron ore

Growing community of inventors

Yokohama, Japan

Tatsuro Ariyama