Apparatus and method for controlled feeding of particulate material

摘要

An apparatus for feeding a particulate material. There is a drum having a peripheral surface and a central axis which is rotatable about its central axis. There is a first particulate material retaining wall which has an inner and outer edge. This wall is positioned such that said outer edge is remote from the peripheral surface of the drum and the inner edge is adjacent the peripheral surface of the drum. The inner edge is moveable from said peripheral surface of said drum. A second particulate material retaining wall having an inner and outer end and positioned such that said outer end is remote from the peripheral surface of the drum and the outer end is remote from the peripheral surface with the drum. The first particulate retaining wall is preferably spaced from the peripheral surface of the drum by a distance which corresponds to the angle of repose of the particulate material being used.