NEIL R DOCK
Engineers in Blue Hill, PA

6309211, Oct 30, 2001

Jun 13, 2000

9/592924

Neil R. Dock - Selinsgrove PA
Edward T. Maciejewski - Catawissa PA

Suedala Industries, Inc. - Waukesha WI

F27B 728

432119

A rotary kiln includes a novel air conveying system for delivering a supply of port air beneath the material bed of feed stock passing through the interior of the kiln. The air conveying system includes an air inlet port disposed in the shell of the kiln, a main air conveying channel which communicates with the air inlet port, and a plurality of air vent channels communicating with the main air conveying channel and the interior chamber of the kiln. The main air conveying channel is formed integrally in the refractory bricks which line the inner surface of the kiln shell and extends longitudinally and parallel to the rotary axis of the kiln. The air vent channels extend through the refractory bricks substantially radially with respect to the rotary axis of the kiln.

7354266, Apr 8, 2008

Jan 27, 2006

11/342051

Samuel A. Miller - Danville PA, US
Neil R. Dock - Selinsgrove PA, US
John D. Zerphey - Montoursville PA, US

Metso Minerals Industries, Inc. - Waukesha WI

F27B 7/14

432118, 241183

A rotary kiln for pyroprocessing particulate material includes a cylindrical kiln shell supported for rotation about a longitudinal central axis. The kiln has a discharge opening that includes a lump breaker system. The lump breaker system includes multiple insert retainers mounted to the shell and positioned along the inner circumference of the rotary kiln. Each insert retainer includes multiple mounting slots for receiving breaker inserts that can be easily removed and replaced when worn. Each of the breaker inserts can be individually removed from its respective retainer without removing either the retainer or the layer of refractory in the rotary kiln.