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 WhirlSizer
The Krebs Whirlsizer™ is best described as a hydraulic sizing device that utilizes a swirl action as well as a rising current of water to produce two sharply sized products from an unclassified feed solids stream. This device is best used to produce relatively coarse separations ranging from 16-65 mesh. The swirl action is created from the tangential entry of both the feed and velocity water into the sizer. The primary markets for this device are in the silica sand and phosphate industries.
An initial separation of solids by particle size occurs as the feed is introduced tangentially into the Whirlsizer™ with the coarser solids decending in a downward helical path and the finer particles are displaced via an upward helical path. Any intrained intermediate size particles are eventually displace to the sizer overflow by the rising column of velocity water injected into the underflow chamber below the velocity plate. An inverted cone section exists just above the velocity plate that helps create a velocity gradient that help clean the fine particles from the coarse product.
SPECIFICATIONS:
Housing
Carbon steel plate with integral structural steel support columns. The interior surfaces of the cylindrical shell and coarse product discharge cone are lined with ¼" rubber. The standard housing includes rubber lined victaulic grooved connections for slurry feed, velocity water, and above plate dilution water. The overflow launder is unlined.
Velocity Plate
Carbon steel plate with an inverted cone. The upper surface is lined with ¼" rubber. All velocity plate orifices are equipped with individually replaceable urethane inserts.
Coarse Solids Underflow Control Valve
A manually adjustable Series 2200 Flex Valve is used to regulate the underflow. This valve is a fully enclosed elastomeric valve with a positioner.
APPLICATIONS:
The Whirlsizer™’s primary applications are in the Phosphate, Silica Sand and Sand and Gravel industries. The application in each of the industries is to make a size separation in the 16 to 65 mesh range which is coarser than can be easily done in a hydrocyclone.
FLOW CHARTS:
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