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US 5,992,773 AGranted
Method for fluidized bed jet mill grinding
AssigneeHosokawa Alpine Aktiengesellschaft
InventorDieter Schwechten
Life of this patent
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Abstract
The method and apparatus for impact pulverization by directing at least one high-velocity gas or vapor jet exiting from a nozzle into a fluidized bed of milling material, wherein the gas or vapor jet is jointly accelerated with a portion of the milling material and thereafter directed into the fluidized bed of milling material.
Claims9
A method for impact pulverization by directing at least one high-velocity gas or vapor jet exiting from a nozzle into a fluidized bed of milling material having a first pressure, which comprises the steps of:
- drawing a portion of milling material from a lowest section of the fluidized bed of milling material for joint acceleration with each gas or vapor jet;
- accelerating each gas or vapor jet having a second pressure jointly with the portion of the milling material;
- and directing each gas or vapor jet and the portion of milling material through the nozzle and into the fluidized bed of milling material.
Dependencies are inferred from the claim text.