SYNTHESIS OF SHOENITE FROM THE SUSPENSION WITH A LOW CONTENT OF SODIUM CHLORIDE

Abstract

Shoenite synthesis process from the suspensions with low sodium chloride content was investigated. Two techniques of synthesis were used: dissolution of solid phase which contains huge amount of chlorides and water evaporation from the suspension. The evaporation was carried out under vacuum at the temperature of 80 °C with subsequent cooling. Chemical compositions of solid and liquid phases were estimated. It was established that evaporation degree increase (or decreasе of the amount of water in the system) slows down the shoenite output and increases the impurities amount in it. Should the content of magnesium chloride in the initial suspension be increased, the evaporation degree during the shoenite synthesis should be decreased. The compositions of the products obtained allow us to calculate the evaporation degree of the shoenite suspension.