Study of Obtaining Potassium Hydroxide by Electrochemical Method on the Bases of Flotation and Hallurgic Potassium Chloride

To substantiate the process of obtaining potassium chloride, the compositions of white crystalline and flotation potassium chloride were studied. Studies have been carried out on the purification of the initial solution from impurities of oxides of two and trivalent metals, in particular, calcium and magnesium, which adversely affect the electrolysis process. The degree of purification when purifying a solution from calcium and magnesium ions increases with an increase in the rate of potassium hydroxide and carbonate to calcium and magnesium ions from 100 to 122%. In the case of using white crystalline potassium chloride, the degree of purification from calcium increases and in the case of flotation potassium chloride, it increases less intensively. X-ray phase analysis determined that the resulting sediments consist mainly of calcium carbonate and magnesium hydroxide. To obtain potassium hydroxide by electrolysis methods under given conditions, with an increase in the duration of the flow of the initial solutions (with an increase in the time of supply to the electrolyzer), in fact, this increase in the electrolysis time of the concentration of potassium hydroxide increased.