Co-axial basket mill and method of use

Details Co-axial basket mill and method of use Co-axial basket mill and method of use

2009-06-29

2011-11-01

Rosenbaum, Mark (Department: 3725)

Solid material comminution or disintegration

Processes

With application of fluid or lubricant material

C241S074000, C241S171000, C241S172000

Reexamination Certificate

active

08047459

ABSTRACT:
For use in a basket mill having a process vessel in which particles are ground so as to reduce their size, a basket for retaining a grinding medium, having an opening in its top and a screen at its bottom. A first shaft extends into the basket and has a grinding assembly extending from the shaft. A first drive apparatus rotates the first shaft at a first rotational rate. A second shaft is coaxial with the first shaft and has an impeller for causing material to be ground to move into the basket through the opening and out of said basket through the screen. A second drive apparatus rotates the second shaft at a second rotational rate independent of the first rotational rate. The first shaft may be a tube. A tube may be disposed within the first shaft, and have at its end a bushing for receiving for rotation the second shaft. The bushing may be located outside of a region of the basket where grinding media is disposed. Methods for operating the apparatus.

REFERENCES:
patent: 5184783 (1993-02-01), Hockmeyer et al.
patent: 5346147 (1994-09-01), Ishikawa et al.
patent: 5497948 (1996-03-01), Hockmeyer
patent: 5820040 (1998-10-01), Hockmeyer et al.
patent: 5934579 (1999-08-01), Hiersche et al.
The Hockmeyer HSD Immersion Mill One Step Solution 4 page brochure-unknown date.
Premier Submersible Mill, 2 pages, date unknown.

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