Oil shale beneficiation process using a spiral separator

Details Oil shale beneficiation process using a spiral separator Oil shale beneficiation process using a spiral separator

1991-12-31

1993-03-09

Silverman, Stanley S.

Classifying, separating, and assorting solids

Fluid suspension

Liquid

209166, 209 10, 209 17, 209459, 241 20, 241 21, 241 24, 208425, 208426, B03B 562, B03B 700, B03D 102

Patent

active

051924226

ABSTRACT:
A stream containing kerogen-rich and mineral-rich oil shale particles flow in a downward helical course such that the stream is confined in a manner to give the stream an outer and upper side having a first depth and comprising a substantial amount of said kerogen-rich particles, and an inner and lower side having a second depth and comprising a substantial amount of said mineral-rich particles, the first depth being greater than the second depth. The kerogen-rich and mineral-rich particles are subsequently separated in order to recover the kerogen-rich particles. The mineral-rich particles are further processed using froth flotation.

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"Oil Shale Beneficiation for Above Grand Retorting" by Moudgil et al. Mining Engineering, Sep. 1982, 1336-1338.

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