Classifying – separating – and assorting solids – Electrostatic – Attracting and repelling
Reexamination Certificate
2006-10-26
2011-12-06
Rodriguez, Joseph C (Department: 3653)
Classifying, separating, and assorting solids
Electrostatic
Attracting and repelling
C209S127100
Reexamination Certificate
active
08071904
ABSTRACT:
The present invention provides an electrostatic separation method and an electrostatic separation device each of which, even in a case where the concentration of unburned components of coal ash produced by a boiler of a coal-fired power plant is as high as 15% to 30%, can stably separate the ash (into high unburned component ash and low unburned component ash) without generating spark, reuse the high unburned component ash as fuel, and reuse the low unburned component ash as, for example, an auxiliary material of concrete.The electrostatic separation method and the electrostatic separation device each of which separates unburned carbon ash contained in the coal ash by an electrostatic force, wherein: a substantially flat plate lower side electrode and an upper side electrode disposed above the lower side electrode and including a high dielectric resin element are disposed; a separation zone formed by an electrostatic force is formed by generating a DC electric field between the lower side electrode and the upper side electrode where one of the lower side electrode and the upper side electrode is a positive polarity, and another electrode is a negative polarity; and the unburned carbon ash in the coal ash supplied to the separation zone is separated.
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Fukumoto Kouji
Masamoto Manabu
Mashio Keiichi
Mayumi Yasuhiro
Takikawa Noboru
Alleman Hall McCoy Russell & Tuttle LLP
Kawasaki Jukogyo Kabushiki Kaisha
Rodriguez Joseph C
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