FIELD: metallurgy.
SUBSTANCE: present invention describes a method for two-step sodium calcining of vanadium-containing material, including successive execution of a first calcining step and a second step of calcining raw material. Raw material is a mixture of vanadium-containing material with addition of sodium salt. Temperature at second calcining step is 760–800 °C, wherein temperature at second calcining step is higher than that at first calcining step, and duration of both first calcining step, and second calcining step is 60–300 minutes.
EFFECT: technical result is improved process of converting vanadium due to elimination of agglomeration and sticking of material when calcining.
9 cl, 3 ex
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