Method and device for discharging hard to grind particles from a spiral jet mill
AssigneeNEIZSCH Trockenmahltechnik GmbH
InventorsFrank Winter, Hermann Sickel
Life of this patent
Estimating the term…
Abstract
A grinding, separating, and discharging of hard to grind parts of a material mixture of components with different grindability from a spiral jet mill, wherein the hard to grind parts are discharged from the process chamber via at least one additional discharge nozzle. A spiral jet mill for comminuting and classifying grinding material, including at least one process chamber, wherein this at least one process chamber is enclosed by a housing, at least one grinding material feeding, which leads into the at least one process chamber, at least two grinding nozzles, a fine material outlet, which is radially enclosed by a separator wheel, wherein at least one discharge nozzle is assigned to the process chamber.
Claims13
A method for comminuting a material mixture of components with different grindability, the material mixture containing grindable parts and hard to grind parts, the method comprising:
- using a spiral jet mill that has a process chamber, a fine material outlet, and at least one discharge nozzle,
- feeding the material mixture into the process chamber,
- grinding the material mixture within the process chamber such that the grindable parts are ground into a fine material;
- discharging the fine material from the process chamber via the fine material outlet,
- opening the discharge nozzle upon detecting an accumulation of the hard to grind parts within the process chamber,
- interrupting the feeding of the material mixture into the process chamber upon detecting the accumulation of the hard to grind parts within the process chamber,
- discharging the hard to grind parts from the process chamber via the opened discharge nozzle by means of a fluid,
- wherein the opening of the discharge nozzle and the interruption of the feeding are synchronized with each other.
Dependencies are inferred from the claim text.