Apparatus for separation, refinement, extraction and/or concentration by liquation
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United States of America Patent
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-
Jan 29, 1980
Issued Date -
N/A
app pub date -
Jul 13, 1978
filing date -
Feb 28, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
Apparatus for separation of mixtures wherein a mixture is cooled very slowly in a quiescent, nondisturbed condition to produce large dendritic crystals of solidified solvent, then heated very slowly while liquid of high solute concentration is drained from the large interstices between the crystals, the cooling and reheating being effected by slowly conveying containers of mixture in a continuous circular path through a long heat transfer conduit or tunnel having a central refrigeration zone. Adjacent trains of containers travel through the tunnel in opposite directions. Arrangements are provided for collecting liquid having high concentrations of solute and recycling this liquid back through the foregoing process in said containers after they have been emptied of liquid treated in a preceding cycle.
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