Classication of Fine Particles in a wet Inertial Clssifier

Research Project

Project/Area Number	61550464
Research Category	Grant-in-Aid for General Scientific Research (C)
Allocation Type	Single-year Grants
Research Field	資源開発工学
Research Institution	The Univ. of Tokyo
Principal Investigator	OKAYA Katsunori Research Associate,Faculty of Engineering,The Univ. of Tokyo, 工学部, 助手 (80134493)
Co-Investigator(Kenkyū-buntansha)	NONAKA Michio Reseah Associate ,Dr.,Faculty of Engineering,The Univ. of Tokyo, 工学部, 助手 (70010981) OKANO Yasuhiko Assoc.Prof.,Dr.,Faculty of Engineering,The Univ. of Tokyo, 工学部, 助教授 (30011092) INOUE Toshio Prof.,Dr.,Faculty of Engineering,The Univ. of Tokyo, 工学部, 教授 (80010742)
Project Period (FY)	1986 – 1987
Project Status	Completed (Fiscal Year 1987)
Budget Amount *help	¥1,100,000 (Direct Cost: ¥1,100,000) Fiscal Year 1987: ¥300,000 (Direct Cost: ¥300,000) Fiscal Year 1986: ¥800,000 (Direct Cost: ¥800,000)
Keywords	classification / classifier / principle / inertia / flow / simulation / fine particle / 湿式
Research Abstract	In this report the auther has tried to search for the possibility of inertial classification in domain of wet process. Because of the higher density and viscosity of water compared with air as the domain, it is more difficult to attain a high flow velocity. This results in reduced inertial effect of particles inwater and difficulty in separation of particles from the main stream. Only through careful configuration of inertial field it will be possible to attain proper effect of inertial deflection of coarser particles in water. A series of computed simulation of the flow pattern and the particle locus in the inertial classifier was conducted. Some experimental data on a simple inertial classifier unit against the results of the simulations proved that the simulation is reliable enough. By the simulations on various flow velocity and several classifier sizes, it has been found that particles below 10 m can be separated by the reversal flow type of a wet inertial classifier.