Abstract：The chemical phases of vanadium in vanadium-titanium magnetite are usually divided into four categories, i.e., vanadium in sulfide, vanadium in titanomagnetite, vanadium in silicate, and vanadium in ilmenite. The vanadium in sulfide was separated using strong oxidant; the vanadium in titanomagnetite was separated according to its strong magnetism; the vanadium in silicate was separated using ammonium fluoride-nitric acid; finally, the vanadium in ilmenite was obtain in residue. The content of vanadium was determined by inductively coupled plasma atomic emission spectrometry (ICP-AES). The phase division of vanadium in vanadium-titanium magnetite ore was unitized in experiments. The extracting solvent for each phase was selected and optimized. The analytical line was determined and the detection limit was calculated. The content of total vanadium and vanadium in each phase in vanadium-titanium magnetite samples from three mine areas were determined according to the experimental method. The results of total vanadium and vanadium in titanomagnetite were consistent with those obtained by spectrophotometry. The relative standard deviations (RSD, n=12) of determination results of vanadium in each phase were almost less than 5%. Total vanadium was compared to the sum of each phase vanadium, and the relative deviation was within 5%, which could meet the requirements in The specification of testing quality management for geological laboratories.
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MA Hai-ping, MA Ling, LIU Zhen, CHEN Bo, SUN Li. Application of inductively coupled plasma atomic emission spectrometry in chemical phase analysis of vanadium in vanadium-titanium magnetite. , 2019, 39(8): 61-66.
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