On-going technological developments, especially in the field of microelectronics and
communication have reflected in concomitant increase in the demand for strategic metals …

Niobium and tantalum are generally found together in nature in ores such as columbite,
tantalite, and pyrochlore. These ores can occasionally associate with cassiterite, the tin ore …

Pure tantalum and niobium oxides were produced from the molten cake after mixing ore-NH
(HF&-KOH in a respective mass ratio of 1/4/3. This resulted in solubilization yields of over …

The results of the research interaction between ash and slag samples from Vladivostok
TPP's landfills saturated with underburning and ammonium hydrodifluoride were given. It …

The paper is devoted to investigation of the complex processing of titanium-rare metal raw
materials with ammonium hydrodifluoride. It is stated that fluorination of the main …