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Method of creating ultra-fine particles of materials using a high-pressure mill
| Details |
Inventors: Mazurkiewicz, Marian; Conrad, Bruce E.;
Assignee: Cornerstone Technologies, L.L.C. (Wilkes Barre, PA)
Primary Examiner: Hong; William
Assistant Examiner:
Attorney, Agent or Firm: Sterne, Kessler, Goldstein & Fox P.L.L.C.
A method for creating ultra-fine particles of material using a high-pressure mill is described. The method includes placing a material in a first chamber and subjecting the material to a high-pressure fluid jet to divide it into particles. These particles are then transferred to a second chamber in which they are subjected to cavitation to further divide the particles into relatively smaller particles. These relatively smaller particles are then transferred to a third chamber, in which the particles collide with a collider to still further divide them into ultra-fine particles of the material. The mill of the present invention includes a first chamber having an high-pressure liquid jet nozzle, first and second slurry nozzles, a second cavitation chamber and a third chamber which houses a collider. In one embodiment, the slurry nozzle has an inner surface and sharp edges that project slightly out from the inner surface. Sensors may be located throughout the mill to collect data on the comminution process and to use the data to control the resultant particle size. The product size of the ultra-fine particles made according to the mill of the present invention are preferably less than 15 microns. Further, the particles produced using the mill of the present invention are formed as flakes or platelets which have been broken along nature planes in the material. |
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DETAILED DESCRIPTION OF THE PREFFERED EMBODIMENTS A preferred embodiment of the present invention is now described with reference to the figures where like reference numbers indicate identical or functionally similar elements.
Also in the figures, the left most digit or digits of each reference number corresponds to the figure in which the reference number is first used.
While specific configurations and arrangements are discussed, it should be understood that this is done for illustrative purposes only.
A person skilled in the relevant art will recognize that other configurations and arrangements can be used without departing from the spirit and scope of the invention.
FIG.
1 shows a first embodiment of a high-pressure mill 100 for processing materials into ultra-fine particles.
Mill 100 includes a first chamber 102, nozzle chambers 104 and 108, a second chamber 106, and a third chamber 110.
In one embodiment, chambers 102, 106 and 110 each have a length (measured from inlet to outlet) in the range of 1-20 inches and a diameter in the range of 0.
25-10 inches.
However, it would be apparent to one skilled in the relevant art that various other sizes and configurations of chambers 102, 106 and 110 could be used to implement mill 100 of the present invention.
First chamber 102 includes an inlet 112.
The material to be processed is fed into first chamber 102 via inlet 112.
In this embodiment, a funnel 114 is disposed above inlet 112 to facilitate loading of the material to be processed into first chamber 102.
In an alternate embodiment, inlet 112 could be connected via a port to an outlet of another similar mill, so that the particles exiting a first mill could be pumped into a second stage mill to achieve further comminution of the particles.
The second stage mill could be designed with the same chambers and features as the first mill, however, the nozzle sizes would be smaller than the first mill to accommodate the reduced size of the particles.
The entire interior of each chamber is coated with a thin layer of a material
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Liquid Purification 
