Vana­di­um ores are an impor­tant source of a strate­gic met­al that plays a cru­cial role in mod­ern high-tech mate­ri­als. Due to vanadium’s abil­i­ty to enhance the strength, wear resis­tance, and heat resis­tance of alloys, these ores are of key impor­tance for fer­rous and non-fer­rous met­al­lur­gy, aero­space engi­neer­ing, pow­er engi­neer­ing, and the chem­i­cal indus­try.

Although the aver­age con­tent of vana­di­um in the Earth’s crust is only about 0.02%, it is rel­a­tive­ly wide­spread in nature. Indus­tri­al deposits are main­ly found in com­plex ores of mag­mat­ic, sed­i­men­ta­ry, plac­er, and meta­mor­phogenic ori­gin, where vana­di­um typ­i­cal­ly occurs togeth­er with iron, tita­ni­um, ura­ni­um, and oth­er ele­ments. Its geo­chem­i­cal affin­i­ty with these met­als leads to its con­cen­tra­tion in min­er­als such as titano­mag­netite, ilmenite, rutile, as well as in cer­tain vana­dates that have indus­tri­al sig­nif­i­cance.

Vana­di­um ores is includ­ed in the list of min­er­als of nation­al impor­tance, approved by Res­o­lu­tion of the Cab­i­net of Min­is­ters of Ukraine No. 827 of Decem­ber 12, 1994, as ores of rare met­als.

Vana­di­um (Latin Vana­di­um, chem­i­cal sym­bol V) belongs to Group V of the peri­od­ic table, with atom­ic num­ber 23 and atom­ic mass 50.94. In its pure form, it is a duc­tile met­al of a gray-steel col­or that can be eas­i­ly processed by pres­sure. It melts at 1900 °C, boils at 3400 °C, and has a den­si­ty of 6.11 g/cm³.

The met­al is resis­tant to air, sea­wa­ter, and alka­line solu­tions at nor­mal tem­per­a­tures, but dis­solves in hydro­flu­o­ric acid. In sul­fu­ric and hydrochlo­ric acids, it exhibits high­er cor­ro­sion resis­tance than tita­ni­um and stain­less steel. When heat­ed above 300 °C, it absorbs oxy­gen and becomes brit­tle; at high tem­per­a­tures, it forms a refrac­to­ry car­bide VC (melt­ing point ≈ 2800 °C) with high hard­ness.

Two sta­ble iso­topes are known — ⁵¹V (99.75%) and the rare ⁵⁰V (0.25%), which is weak­ly radioac­tive with a half-life of about 10¹⁴ years. The aver­age con­tent of vana­di­um in the Earth’s crust is about 0.02%.

The high­est con­cen­tra­tions of vana­di­um in mag­mat­ic rocks are found in gab­bro and basalts, which account for about 90% of the met­al asso­ci­at­ed with endo­genic process­es. In sed­i­men­ta­ry rocks, it accu­mu­lates in bioliths (coal, asphaltites, bitu­mi­nous phos­phates), shales, baux­ites, oolitic and siliceous iron ores.

In mag­mat­ic for­ma­tions, vana­di­um is typ­i­cal­ly incor­po­rat­ed into the struc­ture of iron- and tita­ni­um-rich min­er­als such as titano­mag­netite, ilmenite, rutile, sphene, pyrox­enes, amphi­boles, and gar­nets. In hydrother­mal deposits, com­pounds of tri‑, tetra‑, and pen­tava­lent vana­di­um occur. Under exo­genic con­di­tions, it migrates eas­i­ly in aque­ous solu­tions as chlo­rides and oxy­chlo­rides and pre­cip­i­tates at geo­chem­i­cal bar­ri­ers.

Among more than 80 known nat­ur­al vana­dates, the most eco­nom­i­cal­ly impor­tant are:

• roscoelite — K₍V₃AlSi₃O₁₀[OH]₂₎;
• carnotite — K₂U₂(VO₄)₂O₄·2H₂O;
• vana­di­nite — Pb₅(VO₄)₃Cl;
• descloizite — (Zn,Cu)Pb(VO₄)(OH);
• coul­sonite — Fe(Fe,V)₃O₄;
• patron­ite — VS₄.

The for­ma­tion of vana­di­um deposits occurs in var­i­ous geo­log­i­cal envi­ron­ments, which deter­mine the min­er­al com­po­si­tion, met­al con­cen­tra­tion, and eco­nom­ic val­ue of the deposits. By ori­gin, five main genet­ic groups are dis­tin­guished: mag­mat­ic, weath­er­ing-relat­ed, plac­er, sed­i­men­ta­ry, and meta­mor­phogenic.

Mag­mat­ic deposits are the pri­ma­ry glob­al source of vana­di­um. They are asso­ci­at­ed with large mass­es of ultra­ba­sic and basic rocks formed dur­ing the slow cool­ing of mag­ma and char­ac­ter­ized by dis­tinct lay­er­ing. These are most com­mon­ly anorthosite and gab­broic com­plex­es, where vana­di­um is con­cen­trat­ed in titano­mag­netite and mag­netite. Such ores usu­al­ly have a low con­tent of V₂O₅ (0.1–0.3 %), but due to their huge reserves and the pos­si­bil­i­ty of com­plex pro­cess­ing, they are extreme­ly promis­ing. Notable glob­al exam­ples include the Bushveld Com­plex in South Africa and the Lac Tio deposit in Cana­da, while in Ukraine they are rep­re­sent­ed by apatite–ilmenite–titanomagnetite deposits of the Zhy­to­myr region.

Weath­er­ing deposits form as a result of oxi­da­tion of poly­metal­lic ores. Under the influ­ence of atmos­pher­ic and ground­wa­ter, sul­fides decom­pose and sec­ondary vana­di­um min­er­als accu­mu­late, such as descloizite, cuprode­scloizite, and vana­di­nite. These zones often have pipe-like or lens-shaped forms, con­fined to the upper parts of ore bod­ies. Such ores may con­tain up to 5–6% V₂O₅, although their reserves are usu­al­ly lim­it­ed.

Plac­er deposits devel­op through the destruc­tion of mag­mat­ic or meta­mor­phic rocks and the trans­port of heavy min­er­als by water. In these deposits, vana­di­um-bear­ing min­er­als include titano­mag­netite, ilmenite, and rutile. Large coastal-marine plac­ers enriched in vana­di­um-bear­ing titano­mag­netite are known in New Zealand, Aus­tralia, and Rus­sia, and in Ukraine — at the Maly­sheve deposit and the Irshan­sk plac­er group.

Sed­i­men­ta­ry deposits form in basins of accu­mu­la­tion of phos­pho­rites, baux­ites, coal, as well as in oil- and bitu­men-bear­ing stra­ta. Under such con­di­tions, vana­di­um may con­cen­trate in phos­phate, clay, or organ­ic min­er­als, as well as in the form of latron­ite in asphaltites. A typ­i­cal exam­ple is the phos­pho­rite deposits of the Rocky Moun­tains in the USA, where vana­di­um is extract­ed as a by-prod­uct, as well as Venezue­lan high-sul­fur oils con­tain­ing up to sev­er­al per­cent V₂O₅ in ash. In Ukraine, sed­i­men­ta­ry vana­di­um deposits are rep­re­sent­ed by brown iron ores of the Kerch Penin­su­la with ele­vat­ed met­al con­tent.

Meta­mor­phogenic deposits are formed under hydrother­mal-meta­so­mat­ic process­es in deep­er lev­els of the Earth’s crust. Here, vana­di­um is often asso­ci­at­ed with ura­ni­um, scan­di­um, zir­co­ni­um, and rare earth ele­ments. Con­cen­trat­ing min­er­als (such as aegirine and alka­line amphi­boles) are enriched with vana­di­um in car­bon­ate meta­so­matites. A notable exam­ple in Ukraine is the Zhov­torichenske uranium–vanadium–scandium deposit, where V₂O₅ con­tent reach­es up to 0.21%.

Glob­al vana­di­um resources are esti­mat­ed at approx­i­mate­ly 63 mil­lion tonnes in terms of V₂O₅. More than 90% of proven reserves are con­cen­trat­ed in com­plex titano­mag­netite and magnetite–ilmenite ores of mag­mat­ic ori­gin. These deposits are char­ac­ter­ized by sta­ble met­al con­tent, enor­mous reserves that may reach bil­lions of tonnes, and the pos­si­bil­i­ty of inte­grat­ed extrac­tion not only of vana­di­um, but also of iron, tita­ni­um, ura­ni­um, gold, cop­per, plat­inum, and scan­di­um.

Vana­di­um pro­duc­tion is main­ly car­ried out in South Africa, Chi­na, Rus­sia, Aus­tralia, and the Unit­ed States. South Africa is the undis­put­ed leader both in terms of pro­duc­tion scale and export vol­umes, sup­ply­ing about three-quar­ters of glob­al vana­di­um prod­ucts. In Chi­na, the main source is titano­mag­netite ores of the Panzhi­hua region, while in Rus­sia pro­duc­tion is based on Ural deposits. Aus­tralia exploits the Windimur­ra deposit by open-pit min­ing, where­as in the Unit­ed States vana­di­um is pro­duced on a rel­a­tive­ly small scale from uranium–vanadium ores of the Col­orado Plateau and from vana­di­um-bear­ing phos­pho­rites of the Soda Springs area.

An increas­ing role is being played by uncon­ven­tion­al sources, such as vana­di­um-bear­ing crude oils, oil shales, and bitu­mi­nous sands. Among these, the most sig­nif­i­cant are the oil deposits of the Orinoco Belt in Venezuela, as well as deposits in Iran. Demand for vana­di­um prod­ucts large­ly depends on the state of the glob­al econ­o­my and ener­gy prices. The mar­ket is high­ly sen­si­tive to sup­ply reduc­tions, as seen in the ear­ly 2000s, when fer­rovana­di­um prices in Europe exceed­ed 90–100 USD per kilo­gram and V₂O₅ reached about 45 USD per kilo­gram due to ris­ing demand and reduced sup­ply.

Vana­di­um ores are the pri­ma­ry source of a met­al that plays a cru­cial role in the devel­op­ment of mod­ern tech­nolo­gies. The largest share of extract­ed vana­di­um is con­vert­ed into fer­rovana­di­um, which is used for alloy­ing steels. Even small addi­tions sig­nif­i­cant­ly increase strength, elas­tic­i­ty, and wear resis­tance, while reduc­ing the weight of struc­tures with­out com­pro­mis­ing reli­a­bil­i­ty. Due to these prop­er­ties, vana­di­um has become indis­pens­able in the pro­duc­tion of steel for bridges, high-pres­sure pipelines, rail­way rails, tur­bine com­po­nents, and jet engine parts.

In non-fer­rous met­al­lur­gy, vana­di­um is used to pro­duce titanium–vanadium alloys that com­bine low weight with high strength and cor­ro­sion resis­tance, mak­ing them wide­ly used in aero­space engi­neer­ing. Copper–vanadium alloys are val­ued for their com­bi­na­tion of mechan­i­cal strength and elec­tri­cal con­duc­tiv­i­ty, which makes them impor­tant for elec­tri­cal equip­ment.

Vana­di­um also plays an impor­tant role in the chem­i­cal indus­try, where its com­pounds act as cat­a­lysts in the pro­duc­tion of sul­fu­ric acid, the syn­the­sis of ani­line dyes, rub­ber man­u­fac­tur­ing, and petro­le­um crack­ing process­es. With the devel­op­ment of next-gen­er­a­tion ener­gy sys­tems, inter­est is grow­ing in vana­di­um redox flow bat­ter­ies, which enable effi­cient stor­age of elec­tric­i­ty gen­er­at­ed from renew­able sources.

In addi­tion, vana­di­um com­pounds are used in the pro­duc­tion of spe­cial types of glass and ceram­ics, as well as in opto­elec­tron­ic devices, where their mag­net­ic and elec­tri­cal prop­er­ties are impor­tant. Thus, the use of vana­di­um ores spans both tra­di­tion­al indus­tri­al sec­tors and advanced tech­no­log­i­cal fields, ensur­ing their strate­gic impor­tance in the glob­al econ­o­my.

In Ukraine, indus­tri­al extrac­tion of vana­di­um is cur­rent­ly not car­ried out; how­ev­er, geo­log­i­cal explo­ration has con­firmed a sig­nif­i­cant poten­tial for its devel­op­ment. The met­al can be recov­ered as a by-prod­uct dur­ing the pro­cess­ing of com­plex apatite–ilmenite–titanomagnetite ores, zircon–rutile–ilmenite plac­ers, and uranium–vanadium–scandium meta­so­matites. Addi­tion­al­ly, techno­genic sources are con­sid­ered promis­ing, includ­ing ther­mal pow­er plant ash, met­al­lur­gi­cal and tita­ni­um indus­try slags, as well as “red mud” from alu­mi­na pro­duc­tion.

The main reserves are con­cen­trat­ed with­in the Volo­darsk-Volyn­skyi gabbro–anorthosite mas­sif of the Korosten plu­ton in the Zhy­to­myr region. The Stremy­horodske, Torchynske, and Zloby­chivske deposits con­tain apatite–ilmenite ores with titano­mag­netite, where the aver­age V₂O₅ con­tent is about 0.20–0.25%. The Stremy­horodske deposit is dis­tin­guished by the great depth of indus­tri­al min­er­al­iza­tion, reach­ing up to 1.2 km, and by the com­plex com­po­si­tion of its ores, which also con­tain scan­di­um and flu­o­rine. The Torchynske deposit is asso­ci­at­ed with the weath­er­ing crust of gab­bro, while the Zloby­chivske deposit has a plac­er ori­gin.

Among plac­er deposits, the most well-known are the Malyshiv­ske deposit and the Irshan­sk group of deposits. These pro­vide ilmenite con­cen­trates con­tain­ing vana­di­um in the range of 0.03–0.52% in ore and, with appro­pri­ate pro­cess­ing tech­nolo­gies, could become a sta­ble source of the met­al.

In the Dnipropetro­vsk region, the Zhov­torichenske uranium–vanadium–scandium deposit is locat­ed, where vana­di­um (approx­i­mate­ly 0.21% V₂O₅) is con­cen­trat­ed in car­bon­ate meta­so­matites togeth­er with scan­di­um, zir­co­ni­um, and rare earth ele­ments. Sig­nif­i­cant con­cen­tra­tions are also found in the brown iron ores of the Kerch Penin­su­la, where V₂O₅ con­tent ranges from 0.03 to 0.10%.

Although tech­nolo­gies for extract­ing vana­di­um from Ukrain­ian ilmenite con­cen­trates were devel­oped as ear­ly as the 1970s, they have not yet been imple­ment­ed on an indus­tri­al scale. Suc­cess­ful exam­ples exist in Kaza­khstan, where vana­di­um is recov­ered as a by-prod­uct from ilmenite con­cen­trates of the Maly­sheve deposit at the Ust-Kamenogorsk Tita­ni­um-Mag­ne­sium Plant. This demon­strates that, with the estab­lish­ment of inte­grat­ed pro­cess­ing of tita­ni­um-bear­ing raw mate­ri­als, eco­nom­i­cal­ly viable vana­di­um pro­duc­tion could also be devel­oped in Ukraine.

Vana­di­um ores rep­re­sent a strate­gic raw mate­r­i­al base for a num­ber of key sec­tors of the glob­al econ­o­my — from met­al­lur­gy and mechan­i­cal engi­neer­ing to ener­gy and the chem­i­cal indus­try. Their impor­tance is increas­ing not only due to tra­di­tion­al use in the pro­duc­tion of alloy steels, but also in con­nec­tion with the devel­op­ment of new tech­nolo­gies, par­tic­u­lar­ly vana­di­um redox flow bat­ter­ies, which are capa­ble of pro­vid­ing sta­ble ener­gy stor­age from renew­able sources.

The geo­log­i­cal diver­si­ty of deposits — from large mag­mat­ic mas­sifs to sed­i­men­ta­ry and meta­mor­phogenic for­ma­tions — deter­mines a wide range of approach­es to the extrac­tion and pro­cess­ing of vana­di­um-bear­ing raw mate­ri­als. Glob­al expe­ri­ence shows that the eco­nom­ic effi­cien­cy of devel­op­ing such deposits increas­es sig­nif­i­cant­ly when inte­grat­ed recov­ery of asso­ci­at­ed com­po­nents is applied, includ­ing iron, tita­ni­um, scan­di­um, rare earth ele­ments, and ura­ni­um.

Ukraine pos­sess­es con­sid­er­able poten­tial in this field: explored mag­mat­ic and plac­er deposits, uranium–vanadium–scandium meta­so­matites, as well as sig­nif­i­cant techno­genic resources could form the basis for the devel­op­ment of a mod­ern vana­di­um extrac­tion and pro­cess­ing indus­try. Real­iza­tion of this poten­tial requires the intro­duc­tion of advanced tech­nolo­gies for com­plex ben­e­fi­ci­a­tion and pro­cess­ing, the devel­op­ment of eco­nom­i­cal­ly jus­ti­fied projects, and invest­ment in min­ing and met­al­lur­gi­cal infra­struc­ture.