Asahi Kasei Kogyo Kabushiki Kaisha

Asahi Kasei Kabushiki Kaisha

Masaaki Sakurai

Tadashi Kai

Kunihiro Imada

Kenji Inokuchi

Yuji Matsue

The invention provides an iron sulfide characterized in that it comprises FeS,, Fe,S, Fe,O,and FeSO,, and that the secondary particles thereof, have a 50% volume-cumulative particle diameter of from 20 to 300 &mgr;m. The invention also provides a process for producing an iron sulfide comprising the steps of introducing (a) ferrous sulfate monohydrate having a d,of from 20 to 300 &mgr;m and (b) not less than stoichiometric amount of at least one sulfur compound selected from elemental sulfur and hydrogen sulfide into the fluidized bed of a furnace and then fluidizing, burning, and reacting the ingredients at a temperature of from 350 to less than 630&deg; C., a superficial velocity of 0.1 m/sec or higher, and a pressure of 1 atm or higher using air as a fluidizing gas. The present invention is useful, for example, in a process of coal liquefaction or heavy-oil hydrocracking.

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Kanagawa, Japan

Masaaki Sakurai