Chapter
Jul 11, 2012
Centrifugal Sieve for Size-Segregation and Beneficiation of Regolith
Authors: C. B. Dreyer [email protected], O. Walton [email protected], and E. P. Riedel [email protected]Author Affiliations
Publication: Earth and Space 2012: Engineering, Science, Construction, and Operations in Challenging Environments
Abstract
Reliable, robust methods for separation of granular materials that operate independent of gravity level would be useful for many applications in space exploration. Utilizing centrifugal force as the primary body-force, combined with shearing flow and vibratory motion the centrifugal-sieve separator can provide efficient gravity-level-independent size classification of granular feedstock like lunar regolith. A test apparatus has been built using a size-separating screen at the outside of the flow that will separate particles, with the fines passing through the outer wall screen, and the coarse material passing axially through the continuous feed system. The test apparatus is designed for semi-autonomous operation during reduced-gravity flights, and/or under vacuum conditions.
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© 2012 American Society of Civil Engineers.
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Published online: Jul 11, 2012
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Colorado School of Mines, Department of Mechanical Engineering, 1600 Illinois St, Golden CO 80401. E-mail: [email protected]
Grainflow Dynamics, Inc., 1141 Catalina Drive, PMB 270, Livermore, CA 94550-5928. E-mail: [email protected]
Ned Riedel Engineering, LLC, 150 South 31st Street, Boulder, CO 80305. E-mail: [email protected]
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