Method and centrifugal apparatus for slurry testing

Patent · Tue Apr 17 00:00:00 EST 1984

OSTI ID:6517325

Tuzson, J J

In accordance with the centrifugal erosion testing method of the invention, a material specimen is rotated with a flat surface facing the direction of rotation and a narrow stream of an abrasive particle slurry is concurrently flowed at a preselected rate in a radial direction across the flat surface, the rotating step being at sufficiently high angular velocity to urge the abrasive particles by Coriolis acceleration into a compacted mass against the flat surface and erode material therefrom by scouring type action as the particles flow radially outward. The rotating and flowing steps are continued for a sufficient preselected duration to erode material to a measurable depth, and the depth to which the flat surface is worn by the abrasive particles is measured as an indication of the erosion resistance of the specimen material. The centrifugal slurry erosion testing apparatus includes a rotatable cylindrical vessel into the interior of which the abrasive slurry is fed and a specimen holder extending radially from the vessel having a cavity for receiving the specimen and a radial slurry flow passage communicating with the interior of the vessel. One of the radial passage longitudinal walls is defined by the flat surface of the specimen. Preferably the specimen holder comprises mating semicylindrical halves one of which has a specimen-receiving cavity in its abutting surface and the other has a narrow rectangular-in-cross section groove in its abutting surface which communicates with the interior of the vessel and together with the flat surface of the specimen defines the radial slurry flow passage. The mating semicylindrical halves are enclosed by a sleeve having an annular rim disposed interiorly of the vessel to prevent radially outward movement of the specimen holder.

• Assignee: Allis-Chalmers Corporation
• Patent Number(s): US 4442707
• OSTI ID: 6517325
• Resource Relation: Patent File Date: Filed date 20 Dec 1982; Other Information: PAT-APPL-451556
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL PREPARATION PLANTS
EROSION
MATERIALS TESTING
ABRASIVES
ANGULAR VELOCITY
CENTRIFUGATION
CORIOLIS FORCE
CORROSIVE EFFECTS
DEPTH
ROTATION
SLEEVES
SLURRIES
TEST FACILITIES
DIMENSIONS
DISPERSIONS
INDUSTRIAL PLANTS
MIXTURES
MOTION
SEPARATION PROCESSES
SUSPENSIONS
TESTING
VELOCITY
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage