STUDY ON DECANTATION WAYS OF ROCK SALT BRINES AND THEIR EFFECTIVE USE

Rock salt from Dhrovjani mine (Delvina) is characterized by a very high content of insoluble in water matter (around 20%). Nevertheless, it has been used for more than 20 years in some industrial areas, particularly in soda ash production at the Vlora plant. The use of this kind of salt is accompanied by large amount generation of solid waste, and also by limited decantation rate of raw brines prepared, in particular during the wet seasons (when the salt moisture content exceeds 2.5%). The study was undertaken in relation to this rocky salt, as well as to the possibility of decantation rate increasing of the crude brines.