Abstract
Potash, the common name for potassium compounds, is also used frequently to indicate potassium oxide (K2O) equivalent of a compound, even though the compound may contain no oxide. For example, the chief compound of potassium in most potash ores is potassium chloride (KCl), while concentrates are sold on the basis of equivalent K2O content (about 60% for muriate). The potash minerals occurring in these deposits are all soluble in water and it is easy to concentrate their solutions to a high percentage of potassium oxides. This chapter deals with the beneficiation of the potash ores from solid deposits.
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