Patent ID: 8152963

Claim:
A method for manufacturing a regenerated particle aggregate usable as a filler or pigment for paper making, the regenerated particle aggregate being obtained through a dehydration process, a drying process, a calcined process, and a pulverization process of a main raw material using a deinked froth separated from a pulp fiber in a deinking process of manufacturing recycled pulp as the main raw material, wherein a moisture percentage of the raw material after the dehydration process is set to 2 to 20 mass % in the drying process, and the calcined process includes at least two steps of calcined processes of a first stage calcining furnace of a cyclone type, and a second stage calcining furnace following the first stage calcining furnace, the second stage calcining furnace having a furnace temperature lower than a temperature in a top portion of the first stage calcining furnace.