AN IMPROVED APPARATUS AND PROCESS FOR GRANULATING DRY POWDER MATERIALS

摘要

Uniformly sized granules are formed using the present extruder (14) and granulation process. The extruder (14) contains a spiral worm screw (26) for guiding a granulation material to an apertured place (24). The spiral worm screw (26) is rotated within a chamber (20) and is formed from a guiding slant which terminates at a blunt edge (30) near the apertured plate (24). The blunt edge (30) rubs the granulation material against the apertured plate (24) which softens the material forming a semi-solid material. The semi-solid material is then gently pushed through the apertured plate (24) using just the required pressure. The granules are formed when the semi-solid material hardens after exiting the apertured plate (24).