Spiral jet mill and method for grinding materials to be ground in a spiral jet mill
AssigneeLANXESS Deutschland GmbH
InventorsBartholomäus Luczak, Rolf MÜLLER, Tim PESCH
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Abstract
The invention relates to a spiral jet mill (1) having a grinding chamber (10), which is delimited by a bottom (11), a cover (12), and a wall (13) that connects the bottom (11) and the cover (12), and having a plurality of grinding gas nozzles (14) that pass through the wall (13) and are connected to a grinding gas source, wherein each of at least part of the grinding gas nozzles (14) is provided with an associated switchable shut-off mechanism (15), which is able to independently open and close the connection to the grinding gas source. In addition, a method for grinding milling materials in a spiral jet mill is also disclosed.
Claims28
A spiral jet mill having a grinding chamber, which is delimited by a bottom, a cover, and a wall that connects the bottom and the cover, and having a plurality of grinding gas nozzles that pass through the wall and are connected to a grinding gas source, characterized in that comprising each of at least part of the grinding gas nozzles is provided with an associated switchable shut-off mechanism, which is able to independently open and close the connection to the grinding gas source.
A method for grinding milling materials in a spiral jet mill, wherein the spiral jet mill has a grinding chamber, which is delimited by a bottom, a cover, and a wall and into which the milling material is introduced and acted on by a grinding gas flow from a plurality of grinding gas nozzles that pass through the wall, wherein the grinding gas flow is regulated by varying the number of grinding gas nozzles that are acted on with the grinding gas flow.
Dependencies are inferred from the claim text.