Gisbert G Schall

US Patent:

20080191072, Aug 14, 2008

Filed:

Apr 25, 2006

Appl. No.:

11/912398

Inventors:

Gisbert Schall - Park Ridge NJ, US

International Classification:

B02C 9/04
B02C 23/06
B02C 15/00
B02C 13/00

US Classification:

241 36, 241 16, 241162, 241 70

Abstract:

A grinding mill has an outer housing and a rotor mounted in the housing to form a grinding zone between the housing and rotor into which a charge to be ground is introduced. A pair of spaced rings are located at the entranceway to the grinding zone to form an annular gap through which the charge passes. At least one of the rings is adjustable to vary the gap width in response to one or more mill operating parameters. The rings control the flow of the charge into the grinding zone and reduce the size of the charge particles before they enter the grinding zone.

US Patent:

58949984, Apr 20, 1999

Filed:

Sep 19, 1997

Appl. No.:

8/933378

Inventors:

Gisbert Schall - Park Ridge NJ
Edward Casama - Fair Lawn NJ

Assignee:

Draiswerke, Inc. - Mahwah NJ

International Classification:

B02C 1700
B02C 1716

US Classification:

241 79

Abstract:

An agitator mill for flowable mill charge grinding, has a fixed, outer, cylindrical grinding container, to which is coaxially fitted in spaced manner a cylindrical inner stator. A rotary driven, cup-shaped rotor is positioned coaxially to the grinding container and engages in the grinding area formed between the grinding container and the inner stator, so that the grinding area is subdivided into an outer grinding area and an inner grinding area, the grinding areas being interconnected hydraulically by means of a connecting area. A discharge device located within the inner stator is connected in the flow direction to the inner grinding area. A rotary, cylindrical separating screen is positioned coaxially to the rotor between the end of the inner grinding area and the discharge device. In order to ensure a correct operation of the agitator mill with relatively low constructional costs, the separating screen is fitted to the rotor and sealed with respect to the inner stator by means of a seal, particularly a slip ring seal.