Thermal Analysis for Determination of Individual REM Phases in Industrial Middling Product

Abstract

Due to the great demand and high cost of rare-earth metals, recently, attention has been paid to the use of industrial waste to produce these metals. The choice of research direction when extracting valuable components depends on their phase composition. To select the effective conditions for opening REM-containing phases, their phase characteristics must be established. The article presents the results of thermal analysis method applied to identify compounds of rare-earth metals with their low content in middling products of various industries: phosphogypsum, waste production from extraction phosphoric acid; alkali leaching cakes of wolframite concentrate of the Karaoba deposit; spent molten titanium chlorinators; zircon concentration tailings.