Physicochemical and technological aspects of obtaining of mixed coagulants made of aluminum silicate ores of Tajikistan

The purpose of work is to study the decomposition processes of aluminium containing ores - nepheline syenites, kaolin clays, zeolites and bentonite clays by hydrochloric acid in order to obtain mixed coagulants; to defined the optimal decomposition conditions of ores depending on their various physicochemical properties as well as to obtain new chemical compounds for water purification based on the coal of the Fan-Yagnob Deposit and aluminium oxide; to study physicochemical parameters of initial raw materials and obtained compounds; elaboration of flowsheet of obtaining of aluminium-iron coagulants. Based on the analysis of theoretical and experimental studies of physicochemical and technological properties of the initial alumina containing ores of Tajikistan, the optimal conditions for obtaining mixed aluminium-iron coagulants from low-quality aluminium coagulant ores have been defined; the features of the decomposition process of nepheline syenites, kaolin clays, zeolites and bentonite clays by hydrochloric acid have been revealed; the coagulant capacity of the obtained products (mixed coagulants) from aluminium silicate ores of Tajikistan has been determined.