Classifying – separating – and assorting solids – Precedent preparation of items or materials to facilitate... – Sorting special items or sorting by methods and apparatus...
Patent
1990-06-15
1991-10-29
Hajec, Donald T.
Classifying, separating, and assorting solids
Precedent preparation of items or materials to facilitate...
Sorting special items or sorting by methods and apparatus...
55 2, 55102, 55131, 55138, 209129, B03B 100
Patent
active
050608053
ABSTRACT:
A photoelectron emitting member having a multiplex structure comprises a matrix and a protective film. The matrix being selected from the group consisting of elements, inorganic compounds, alloys, mixtures thereof and composites thereof which emit photoelectrons upon exposure to uv rays and other forms of radiation, the protective film comprising at least one material selected from the group consisting of metals, metallic compounds, plastics, polycyclic aromatic hydrocarbon, derivatives thereof or a mixture thereof which is film-forming and not thicker than 0.2 .mu.m. The member can be used in a consistent way over a prolonged period as well as being capable of effective emission of photoelectrons. Fine particles electrically charged with photoelectrons which are emitted upon applying uv rays and/or other forms of radiation to the photoelectron emitting member, can be used in various applications such as (a) separation and classification of fine particles, as well as modifying their surfaces and controlling an electrically charged amount thereof; (b) the measurement of the concentration and size of fine particles in gases such as air and waste gases by using electrically charged fine particles; and (c) trapping and removal of charged fine particles to produce clean gases.
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The Sixth Technical and Research Forum of Aerosol Science, Aug. 1988, "Charging of Aerosol Particles by Photoelectric Effect", (English Abstract).
Man and His Ecosystem, Proceedings of the 8th World Clean Air Congress 1989 held at The Hague, 11-15 Sep. 1989.
Environmental Pollution, vol. 24, No. 5, (1989), 63-71, "Charging and Electrostatic Precipitation of Fine Particles by UV Irradiation".
Fujii Toshiaki
Sakamoto Kazuhiko
Ebara Research Co. Ltd.
Hajec Donald T.
Kaufman Joseph A.
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