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Japan TAPPI gave praise to Mr. Morizane, the president of Shinhama Pump Mfg. Co., Ltd., who developed the new flotation cell which was based on his own idea.The kneading process is used to improve the quality of deinked pulp by helping to release the ink particles from the surface of the fiber.A certain portion of the ink particles are small in size. These small particles are difficult to remove by conventional flotation cells.It has been proven in both pilot plant and commercial scale runs that the new type of flotation cell has excellent small particle removal efficiency.This makes it possible to reduce the amount of wash water required and, to potentially reduce the size of the washer itself.The new “Hi-FLOTATOR” has other advantages apart from excellent ink removal, these include clean operation, compact design, reduced maintenance and increased energy savings due to fewer motors and pumps.To date, Nippon Paper group has installed 11 “Hi-FLOTATOR” plants in 8 mills. In this paper, I will show some comparisons between the “Hi-FLOTATOR” and other flotation cells thats are in operation in our mills.

"Hi-FLOTATOR" a new cyclone-type flotation cell designed for deinking, which has been developed by Shinhama Pump Mfg. Co., Ltd.