Труды КНЦ (Технические науки вып.1/2023(14))

CHEMICAL TECHNOLOGIES, MATERIAL SCIENCES, METALLURGY Orlov A. P., Shchavelev V. B., Concentration of hydrofluoric acid during processing columbite Migaenko E. S., SmirnovA. V., and loparite concentrates......................................................................... 197 NechaevA. V. Permyakova N. A., Likhnikeevich E. G. Technological assessment of prospects for processing of carbonatite weathering core to produce commercial niobium compounds.......... 202 Povetkin K. A., Novikov M. L., Pilot and industrial testing of the extraction technology for obtaining Smirnov A. V., Nechaev A. V. tantalum oxide from tantalum-containing residues............................. 207 Sibilev A. S., Zaitseva T. N., Extraction of ruthenium from solutions of refining production using Karmannikov V. P., Ryabukhin E. A. tributyl phosphate...................................................................................... 213 Smirnov A. A., Golikova A. D., Efficiency of separation of alcohol — ester mixtures by deep eutectic Toikka M. A. solvents based on choline chloride........................................................ 218 Smirnov A. V., Zhukov S. V., Features of the extraction sulfuric acid-fluoride technology Orlov A. P., Nechaev A. V. for processing niobium- and tantalum-containing raw materials...... 223 Sokolov A. Yu., Shchelokova E. A., Complex recycling of spent copper electrolyte..................................... 229 Vorontsov K. A., Kasikov A. G. Sycheva G. A., Kolobov A. Yu. Features of crystallization of cristobalit in quarts glass obtained on plasmotrons of JSC “DINUR” from quarts sand of the Ramenskoye deposit..................................................................... 234 Tyulyubaev Z. M., Leksin A. M. Nanofiltration method in the technology of uranium desorbate Leonova L. A. processing.................................................................................................. 240 Fureev I. L., Neradovsky Yu. N. Choice of a rational technology for processing ore of the Kolmozerskoye deposit on the basis of studying the chemical and mineral composition of the ore sample......................................... 245 8