Rotary mill

• US 4,889,428 A
• Filed: 07/29/1985
• Issued: 12/26/1989
• Est. Priority Date: 07/29/1985
• Status: Expired due to Fees

• Current Assignee: ISG Resources, Inc. (Seven Group Holdings Limited)
• Original Assignee: Concrete Technology Corporation
• Inventors: Hodson, Harry
• Primary Examiner(s): Hornsby, Harvey C.
• Assistant Examiner(s): Haugland, Scott J.
• Application Number:
  US06/760,046
• Time in Patent Office: 1,611 Days
• Field of Search: 366/1, 366/2, 366/293, 366/294, 366/296, 366/315, 366/316, 366/317, 241/251, 241/253, 241/261.3, 241/296, 241/257 R, 241/258, 241/259, 241/261.2, 241/297
• US Class Current: 366/1
• CPC Class Codes: B01F 2025/91 Direction of flow or arrangement of feed and discharge openings
• CPC Class Codes: B01F 27/40 Mixers with rotor-rotor system, e.g. with intermeshing teeth

Abstract

A rotary mill to colloidalize a premixed mortar in a high energy manner so as to increase the degree of hydration comprising a hollow collector casing having a feed inlet to receive the premixed mortar and a discharge outlet for the mixed product, a pair of counterrotating members cooperatively forming a shear zone therebetween wherein the shear zone comprises an inlet region to receive the premixed mortar from the feed inlet, a convergency region to impart a high energy shear to the premixed mortar and an expanding discharge region to feed the premixed mortar to the discharge outlet, and a drive and drive train coupled to the counterrotating members to impart rotational movement thereto.

Claims

1. A rotary mill to colloidalize a premixed fluid mortar in a high energy manner so as to increase the degree of hydration comprising a hollow collector casing having a feed inlet to receive the premixed fluid mortar and a discharge outlet for the mixed fluid product, a pair of substantially horizontal parallel counterrotating members cooperatively forming a shear zone therebetween, each of said pair of substantially horizontal parallel counterrotating members including a helical groove formed on the surface thereof extending from substantially the geometric center thereof to the outer edge thereof;

said helical grooves of said pair of substantially horizontal parallel counterrotating members being formed in opposite directions relative to each other.

2. A rotary mill to colloidalize a premixed fluid mortar in a high energy manner so as to increase the degree of hydration comprising a hollow collector casing having a feed inlet to receive the premixed fluid mortar and a discharge outlet for the mixed fluid product, a pair of substantially horizontal parallel counterrotating members cooperatively forming a shear zone therebetween each of said pair of substantially horizontal parallel counterrotating members including a helical ridge formed on the surface thereof extending from substantially the geometric center thereof to the outer edge thereof, said helical ridges of said pair of substantially horizontal parallel counterrotating members being formed in opposite directions relative to each other.