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US 2004/0200913 A1Published application
Jet mill
AssigneeKronos International, Inc.
InventorsSiegfried Blumel, Volker Jurgen, Hans-Ulrich Schwantiz, Siegfried Wensing
Life of this patent
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Abstract
The invention relates to a jet mill of modular design for the comminution of powdery materials.An inner pulverizing casing made entirely of wear-resistant material is freely mounted in an outer casing pressure vessel.
Claims26
An apparatus, comprising:
- a jet mill for the comminuation of powdery materials, comprising;
- a pressure-resistant pulverizing inner casing, the inner casing for being contained in a pressurized outer casing, the inner casing having abrasion resistant inner surfaces, the inner casing having at least one inlet port for introducing a powdery material into the inner casing, the inner casing having at least one outlet port for extracting the comminuated powdery material from the inner casing, the inner casing having at least one inlet port for introducing a propellant fluid into the inner casing, the propellant fluid introduced from a pressurized fluid filled volume contained between an inner surface of the outer casing and the outer surface of the inner casing.
A method for comminuation of a powdery material, comprising;
- a) introducing the powdery material through at least one inlet port of a pressure-resistant pulverizing inner casing, the inner casing contained in a pressurized outer casing, the inner casing having abrasion resistant inner surfaces, the inner casing having at least one inlet port for introducing a powdery material into the inner casing,
- b) introducing a propellant fluid into the inner casing through at least one inlet port, the propellant fluid introduced from a pressurized fluid filled volume contained between an inner surface of the outer casing and the outer surface of the inner casing, the propellant fluid propelling the powdery material around the inside of the inner casing;
- and
- c) extracting the comminuated powdery material from the inner casing through at least one outlet port
1 more element
Dependencies are inferred from the claim text.