Investigation of Vanadium-Containing Sludge Oxidation Roasting Process for Vanadium Extraction

نویسندگان

چکیده

Vanadium containing sludge is a by-product of vanadium pentoxide obtained by hydrometallurgical methods from slag that can be estimated as promising technogeneous raw material for production. The phase analysis vanadium-containing the X-ray diffraction method showed it contains in spinel form (FeO∙V2O3). various oxidation roasting treatment were studied increasing extraction into solution. It most effective additive 1% CaCO3 at temperature 1000 °C. Oxidation with led to an increase acid-soluble V2O5 1.5% 3.7% and decrease content FeO∙V2O3 3% 0.4%. These results confirm efficiency application convert compounds forms. conversion mechanism phases during additives was investigated thermogravimetric thermodynamic simulation. formation calcium vanadates without occurs temperatures above 800 °C while addition allows one reduce this 600

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ژورنال

عنوان ژورنال: Metals

سال: 2021

ISSN: ['2075-4701']

DOI: https://doi.org/10.3390/met11010100