FIELD: chemistry.
SUBSTANCE: present invention relates to a method of producing vanadium oxide using ion exchange. The method involves mixing vanadium-containing material with CaO or limestone to obtain stating material which is calcined in an oxidising atmosphere and leached, the solid and liquid phases are separated, the leaching product undergoes ion exchange with resin, having strong acid cations, vanadium is precipitated and ammonia is removed by calcination or reduction to obtain vanadium oxide. Waste water from vanadium extraction is returned into the system for recycling after treatment with lime milk.
EFFECT: invention increases degree of extraction of vanadium and reduces cost of the product.
11 cl, 1 dwg, 12 tbl, 5 ex
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|---|---|---|---|
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