METHOD FOR CLARIFYING BAYER PROCESS LIQUORS

摘要

A method for reducing the solid content of a feed Bayer Process liquor containing residual solids, the method comprising the steps of : introducing an inert particulate material into a clarifier vessel having an upper portion and a lower portion; introducing a first flocculating agent into the clarifier vessel; allowing at least a portion of the inert particulate material to form a first layer of suspended inert particulate material in the lower portion of the clarifier vessel; introducing the feed Bayer Process liquor into the lower portion of the clarifier vessel such that the feed Bayer Process liquor passes through at least a portion of the first layer of inert particulate material; removing an overflow from the upper portion of the clarifier vessel, said overflow comprising a liquor with reduced solids content relative to the feed Bayer Process liquor.