Toho Titanium Co., Ltd.

Takefumi Irie

Kazuhiko Kobayashi

Masanori Yamaguchi

Eiichi Fukasawa

Hiroshi Uchida

Shigenori Okudaira

Hideo Takatori

Wataru Kagohashi

A process for producing metallic powders a chlorination step for continuously producing chloride gas of metal by reacting metal with chlorine gas, and a reduction step for continuously reducing the metallic chloride gas by reacting the metallic chloride gas produced in the chlorination step with reducing gas. Regulating the feed rate of the chlorine gas can control the feed rate of the metallic chloride gas, whereby the particle diameters of produced metal powders can be stably controlled. Thus, the invention can make the particle diameters stable and arbitrarily control the diameters in the range of 0.1 to 1.0 &mgr;m.

Process for producing metal powders and apparatus for producing the same

A method for producing titanium alloy by the reduction of titanium tetrachloride and alloy components with a reducing metal agent, capable of continuously producing titanium alloy on an industrial scale. The temperature and pressure of the reaction zone for the reduction are kept above a melting point of the titanium alloy and above the vapor pressure of the reducing metal agent at that temperature respectively, so that the reducing metal agent and its chloride may be kept in a molten state but without boiling.

Method for producing titanium alloy

A method for producing metal by the reduction of a metal halide by a reducing metal agent capable of continuously producing homogeneous metal of high purity. In the method, particles of the same metal as the metal to be produced are charged into a reaction vessel and the metal halide and the reducing metal agent both in vapor form, are ejected upwards into the reaction vessel from its lower portion to form a fluidized bed of the metal particles in the vessel. The reducing reaction between the two vapors takes place on the surface of the metal particles at a temperature below the melting point of the metal product and at a pressure below a vapor pressure of each of the reducing metal agent and the metal halide at that temperature, resulting in depositing and growing the metal product on the surface of the particles.

Method for producing a metal from its halide

Growing community of inventors

Chigaski, Japan

Takefumi Irie