Cuttings dryer for removing liquid from a slurry
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United States of America Patent
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Aug 13, 2002
Grant Date -
N/A
app pub date -
Jul 21, 2000
filing date -
Jul 21, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus are provided for receiving the solids discharge of a centrifuge, shaker, or other clarification system and further drying the solids discharge. The influent into the apparatus of the invention is in the form of a slurry, such as for example the solids discharge of a shaker or centrifuge in a drilling mud clarification system. The apparatus comprises a horizontal screen rotated at a high rate of speed to remove liquid from the slurry by centrifugal force. The horizontal screen is retained by a squirrel cage rotor so that high G-forces can be obtained. Within the horizontal screen is a screw conveyor which rotates at a speed slightly slower than the horizontal screen to define a controllable conveyor speed. In this way, the residence time of the solids in contact with the horizontal screen can be controlled to provide a drier solids discharge from the apparatus. The solids and liquids are provided with separate discharge ports.
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