Laboratory of fluoroammonium technology of mineral raw materials

In Tomsk Polytechnic University at the chair of Engineering Chemistry of Rare Elements for more than 50 years there exists a school of fluoride technology. It has been developing within the framework of nuclear-powered complex where technologies of chemical industry have achieved their perfection. During the last decade fluoride technologies have been intensively used in nuclear-power engineering, as well as in great economy of many countries. It is impossible to consider present industry development without fluorine. Fluorides are used in production of aluminum, plastic, teflon and various other materials of everyday use. We would like to draw your attention to our commercial offers on fluoride technology of mineral raw materials processing.

On this site we invite you to take part in promotion of fluoride technologies use in our life. Gradually with your help here will be collected and presented information about present-day condition of fluorine industry development and researches made in this area.

Professor Alexander Diachenko 


Artem Andreev Ph.D. 

General engineer

 Kraydenko Roman Ph.D.

 General chemist

All technologies presented here have a series of common characteristics and are based on decomposition of parent materials by ammonium fluoride. In contrast to fluorine and hydrogen fluoride, ammonium fluoride has convenient physicochemical properties. At standard conditions it is a solid crystalline nonaggressive material, quickly soluble in water; solution has neutral pH reaction.  Ammonium fluoride’s melting point is 140 °C, and its melt (unlike solid and dissolved state) is the most powerful fluorinating agent. One of the most important economic factors to use ammonium fluoride is possibility of its regeneration and return into the process, whereas fluorine as an element virtually cannot be regenerated and is irretrievably lost after fluorination.

Physicochemical fundamentals of mineral decomposition process lie in the properties of the components fluorides. As a rule, some fluorides are volatile and can be easily separated from the mass. Other fluorides are soluble and can be leached from the fluorinated mass. Some of them are exposed to pyrohydrolysis or have various pH sedimentations. Thus, there is a mixture of fluorides in the melt of ammonium fluoride after fluorination; and by variation of differences in the physiochemical properties of fluorides there can be selected modes for full separation of mineral composition into individual components.