Patent ID: 6178192
Filing Date: 2001-01-23
Classification: F27B,F27D

Abstract:
A raw-material heating apparatus comprising:a furnace cover;a peripheral wall suspended from a periphery of said furnace cover;a hearth adapted to rotate at a position which is in close proximity to a lower edge of said peripheral wall, a heating space being formed by said furnace cover, said peripheral wall, and said hearth;a raw-material supplying pipe disposed in a peripheral portion of said furnace cover so as to supply a raw material onto said hearth, the raw material which is supplied from said raw-material supplying pipe and deposited on said hearth being heated by a heating gas which flows into said heating space;an exhaust pipe disposed in the peripheral portion of said furnace cover; anda pusher supported by said peripheral wall in such a manner as to be capable of reciprocating in a radial direction of said hearth so as to push out the raw material on said hearth toward a drop port formed in a central portion of said hearth, the deposited raw material on said hearth being caused to drop consecutively through said drop port by the reciprocating motion of said pusher,wherein lower-end openings of said raw-material supplying pipe and said exhaust pipe, when viewed in an axial direction of said apparatus, are disposed at a same position or at positions close to each other in an effective region for pushing out the raw material by said pusher.