| 摘要 |
PROBLEM TO BE SOLVED: To provide an advantageous finish heat treatment method for iron powder for improving production efficiency in the finish heat treatment stage of iron powder production, and to provide a finish heat treatment device used for the treatment. SOLUTION: In the finish heat treatment method for iron powder where raw material iron powder dischargaed from a hopper for iron powder storage is preheated in the stage of the discharge, is thereafter continuously fed into a finish heat treatment furnace, and is subjected one or more treatments selected from deoxidizing, decarburizing and denitriding, a gas for heating is blown from the lower part of the hopper so as to preheat the raw material iron powder. COPYRIGHT: (C)2007,JPO&INPIT
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