The research of ammonium hexafluorosilicate sublimation

The authors have studied thermal properties of refined ammonium hexafluorosilicate obtained by anhydrous fluorine-ammonium scheme. The sublimation stages within the temperature range 20…500 °С were studied by thermogravimetric method. The authors have studied the laws of influence of sample heating rate and evaporator geometry on temperature conditions of heating and sublimation of ammonium hexafluorosilicate. Possible ways of improving the equipment for raising the efficiency of heating and evaporation were proposed

The research of ammonium hexafluorosilicate desublimation

The authors have studied the laws of ammonium hexafluorosilicate desublimation on a pilot production unit. The proposed explanation of desublimation was proved by a set of investigations of physical and mechanical properties of desublimate samples. The paper introduces the construction of the improved desublimator, cyclone type advective desublimator