SHOENITE OBTAINING DURING THE POTASSIUM SULFATE SYNTHESIS

Abstract

Shoenite synthesis process in one and two stages was investigated. Two-stage process allows us to obtain shoenite with lower amount of impurities. A composition of shoenite lye with equivalent indices x = 0.88 and y = 0.25 was estimated. For the shoenite synthesis in VCD the suspension humidity should be 60–62.7 % under the evaporation degree of 5–12 %. The optimal conditions for shoenite lye evaporation are as follows: evaporation degree 30–31 %, mixing of the hot evaporated suspension for 1 hour, filtration temperature of obtained suspension 80 °C. The equivalent indices of kainite lye are x = 0.97 and y = 0.06.