Polyhalite is a hydrated sulphate of potash, lime, and magnesia ; sylvite is chloride of potassium; carnallite, a double chloride of magnesium and potassium ; and kainite, a compound of hydrated ...
The most common potash fertilizers are sulfate of potash (SOP) and muriate of potash (MOP). Before it can be turned into commercial fertilizers like SOP and MOP, potash ore must be extracted from ...