METHOD OF RECOVERING POTASSIUM COMPOUND FROM BRINE

摘要

The present invention relates to a method for collecting a potassium compound from saline water, comprising the steps of preparing saline water; removing lithium, magnesium and calcium from the saline water, and obtaining mixed fuel salt; making slurry by mixing the mixed fuel salt with saturated saline water, and then mixing the same with a flotation reagent; injecting air bubbles into the slurry mixed with the mixed fuel salt, the saturated saline water and the flotation reagent, and selectively collecting a potassium compound; separating and screening potassium chloride and Na_2SO_4·3K_2SO_4 from the collected potassium compound; and extracting potassium sulfate from the separated Na_2SO_4·3K_2SO_4.