| 摘要 |
PURPOSE:To heat-treat uniformly the individual raw material particles, by heat- treating a particulate or granular material in a dispersed state under pressure while dropping the particulate and granular material in saturated steam and/or superheated steam, and releasing the heat-treated particulate and granular material to a zone under a low pressure. CONSTITUTION:Saturated steam or superheated steam or mixed steam thereof is circulated from a pipe 5 through a blower 2 and the interior of a circulation pipe 1 and then made to flow further into a heating vessel 6. A raw material is passed through a charging valve 3, fed into the circulation pipe 1, carried by a steam current and introduced into the heating vessel 6 to separate the raw material from the steam by the action of centrifugal force. The raw material is heat-treated while swirled and dropped in the heating vessel 6, and the steam is discharged from an outlet 8. |
