Solid material comminution or disintegration – Processes – By utilizing kinetic energy of projected or suspended material
Patent
1989-10-02
1990-10-16
Rosenbaum, Mark
Solid material comminution or disintegration
Processes
By utilizing kinetic energy of projected or suspended material
241 23, 241 24, 241 39, 241 65, 241 80, 241DIG37, B02C 1906
Patent
active
049628933
ABSTRACT:
Fluidized-bed counter-jet mills are gas-jet mills with which extremely fine milling results can be produced with very little wear and tear. An improvement in the milling results can be achieved by cooling the gas jets with a refrigerant, but the improvement that can be achieved is not substantial and the consumption of refrigerant is very high. In order to lower the consumption of refrigerant while considerably improving the fineness of the milled material, the coarse material which is separated by the grader of the mill is cooled by the refrigerant within the fluidized-bed counter-jet mill and fed back into the milling chamber. Liquid nitrogen is the preferred refrigerant with which the sump of the mill is cooled.
REFERENCES:
patent: 3186648 (1965-06-01), Mandle et al.
patent: 4273294 (1981-06-01), Hollely et al.
patent: 4579288 (1986-04-01), McDermid et al.
Bochmann Klaus
Gursky Helmut
Risto Hans-Joachim
Steidl Dieter
Volker Wolfgang
Messer. Griesheim
Rosenbaum Mark
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