POTASH PROCESSING WITH A VAPOR-COMPRESSION CYCLE
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Nov 19, 2013
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Nov 20, 2012
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Abstract
A potash-extraction system and method for extracting potash from a brine containing potash without the use of water-consuming evaporation ponds or additional chemicals is disclosed. The potash processing system uses a vapor-compression cycle (e.g., heat pump or refrigeration system) to separate potash from brine containing potash and NaCl. In embodiments, heat emitted by components of the vapor-compression cycle (e.g., condenser heat exchanger, evaporator heat exchanger) may heat the brine to precipitate some NaCl from the brine. The remaining potash-concentrated brine may then be cooled to precipitate potash from the solution. The precipitated potash may then be further processed for final use.
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