Patent CA-2096047-A1 (CA)
Title: Pelletizer and water treatment
Inventor: LUSSIER BERTRAND
IPC: B09B3/00
Filed: 1993-05-12
Abstract: ABSTRACT OF THE DISCLOSURE       The invention pertains to ... a method and a system for making ? Granulated and/or pelletized materials from cellulosed materials mixed with waste residues and/or other materials. The granulated materials will be produced of a non-uniform shape and size. The pelletized materials will be produced of a desired shape and size.       IN GENERAL, THE METHOD comprises the steps of making and preparing cellulosed materials, mixing cellulosed materials and waste residues and/or other materials with flocculent agent according to recipes, passing the mixture into a screw conveyor having a tight flexible porous bottom which makes a first separation of the liquid and the solid material; at that step, liquid is sent back to the initial treatment operation and solid materials do go into a high efficiency mixer; the next step, passing the mixture into a screw conveyor having a metal screen bottom with holes and partially separating liquid which is also sent back to the initial treatment operation and solid material do still go into a high efficiency mixer; then, passing the mixture into a pusher screw press which separates water from solid materials thus providing the percentage of desired moisture into granulated materials; in addition, granulated materials can be pelletized by mixing granulated materials into a cutter-mixer and pelletizing it into a multi-pelletizer; water going out the pusher screw press is sent into a water mixer which gets it activated then passed into a water polishing system to get water recycled according to environmental regulations.   THE GRANULATING AND/OR PELLETIZING MATERIALS SYSTEM essentially comprises:      ? A machine making cellulose materials provided with a knife hammer mill operating with heat to crystallize materials, and also provided with magnetic head to AB ?ACT OF THE DISCLOSURE remove metals particles; rotary shaft to remove tapes, adhesives and cloths; air and dust collecting; functions are to strip materials into celluloses. ? A screw conveyor having a tight and flexible porous bottom which partially gets liquid from the mixture; the conveyor having an adjustable angle. ? A screw conveyor having a metal screen bottom, with holes which partially gets liquid from the mixture; the conveyor having an adjustable angle. ? Two high efficiency mixers getting the mixture homogeneous. ? A pusher screw press which is a continuous screw dewatering press for liquid/solids separation. ? A cutter-mixer and a multi-pelletizer; the cutter-mixer provided with a rotatable shaft equipped with a worm and plurality of different types of blades and cutting-blades which functions are to cut and/or to mix and to direct the mixture; the pelletizer comprising two or more fan-like devices with vanes on each fan, having blades who have been folded according to some specific angles turning along screens and forcing a quantity of mixture through the holes of the screens to produce pellets. ? A water polishing system provided with polishing filters which gets water at a recycled level means by micronising it.