Tdk Corporation

Sumitomo Metal Industries, Inc.

Tsutomu Tanaka

Takuo Kataho

Koji Okane

Tetsuhide Uchikawa

Yasuo Ohtani

Makoto Satoh

Kazuyoshi Kobayashi

Yoshimasa Nose

Toshihiro Hamahata

Shozo Okamura

Masanobu Sueyasu

Seiichi Masuda

Koichi Tanaka

Bunsho Hiraoka

A calcination furnace capable of variably setting calcination conditions such as a size of a calcination chamber, a temperature, a temperature distribution and flowing of gas in the calcination chamber; and the like depending on calcined intermediate products. A furnace body in which a furnace chamber is defined includes two movable sections, which are moved in predetermined directions, to thereby vary an internal volume of the furnace chamber as desired.

Calcination furnace

A gasification apparatus utilizing a molten metal bath is disclosed. The apparatus comprises:

Apparatus for gasification of solid carbonaceous material

In a process for gasification of solid carbonaceous material such as coal, powdered coal is top-blown onto a molten iron bath stored in a furnace through a non-submerged lance toward a hot spot formed by means of a jet of oxygen and steam top-blown through a non-submerged lance, the coal being blown by means of a carrier gas, and flux is optionally added into the furnace by the lump or blown toward the hot spot, thereby resulting in the coal being gasified. The ratio L/L.sub.o of the depression depth L of the molten iron bath to the molten iron bath depth L.sub.o is maintained from 0.05 to 0.15, and the blowing velocity of the solid carbonaceous material is maintained from 50 to 300 m/sec so as to suppress the formation of an adhered mass on the upper part of the furnace, hood or lance.

Process for gasification of solid carbonaceous material

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Chiba, Japan

Tsutomu Tanaka