Ferro Vanadium

Ferro vanadium is an iron alloy consisting of vanadium and iron, mainly used as
an alloy additive in steelmaking. The main raw material of ferro vanadium
production in China is vanadium titanomagnetite. After beneficiation and
enrichment, vanadium-bearing pig iron is purified by blast furnace, and
vanadium slag is extracted in atomizing furnace or converter blowing process.
Vanadium slag is pulverized and sodium salt (soda ash, salt or anhydrous
mirthenite) is added for roasting by sodium oxide to make vanadium into soluble
sodium metavanadate (NaVO3). After leaching and purification, ammonium sulfate
is added to precipitate ammonium polyvanadate [(NH4)2V6O16], which is then
deaminated and melted to cast into sheet vanadium pentoxide.

Specification of Ferro Vanadium
Brand Chemical Compositions (%)
V C Si P S Al Mn
≤
FeV40-A 38.0~45.0 0.6 2 0.08 0.06 1.5 ---
FeV40-B 38.0~45.0 0.8 3 0.15 0.1 2 ---
FeV50-A 48.0~55.0 0.4 2 0.06 0.04 1.5 ---
FeV50-B 48.0~55.0 0.6 2.5 0.1 0.05 2 ---
FeV60-A 58.0~65.0 0.4 2 0.06 0.04 1.5 ---
FeV60-B 58.0~65.0 0.6 2.5 0.1 0.05 2 ---
FeV80-A 78.0~82.0 0.15 1.5 0.05 0.04 1.5 0.5
FeV80-B 78.0~82.0 0.2 1.5 0.06 0.05 2 0.5
Size 10-50mm
60-325mesh
80-270mesh & custom size

Application of Ferro Vanadium
Ferrovanadium is mainly used as an alloy additive in steelmaking. After adding
iron vanadium to steel, the hardness, strength, wear resistance and ductility
of steel can be significantly improved, and the cutting performance of steel
can be improved. Iron vanadium is commonly used in carbon steel, low alloy
steel strength steel, high alloy steel, tool steel and cast iron production.

Vanadium ferro alloys types are suitable for alloy steel smelting, alloying
element additive and stainless steel electrode coating.

Production Process of Ferro Vanadium
Electro-silicothermic process

With 75% ferrosilicon and a small amount of aluminum as reducing agent, the
flake vanadium pentoxide was purified in alkaline electric arc furnace through
two stages of reduction and refining. During the reduction period, all the
reducing agent of the first furnace and the sheet vanadium pentaoxide
accounting for 60 ~ 70% of the total amount were loaded into the electric
furnace, and silicon thermal reduction was carried out under the high calcium
oxide slag. When the V2O5 in the slag is less than 0.35%, the slag is released
(called poor slag, can be discarded or used as building materials), into the
refining period. At this time, flake vanadium pentaoxide and lime are added to
remove the excess silicon and aluminum in the alloy liquid. When the alloy
composition meets the requirements, the iron alloy can be slag out. The slag
released in the later stage of refining is called rich slag (containing V2O5 up
to 8 ~ 12%), which is returned to use when the next furnace begins to feed. The
alloy liquid is generally cast into cylindrical ingot, which is finished after
cooling, demolding, crushing and slag removal. This method is generally used
for smelting iron vanadium containing 40 ~ 60% vanadium. The recovery rate of
vanadium is up to 98%. Refining consumes about 1600 kilowatt-hours per ton of
iron vanadium.

Thermite process

Smelting with aluminum as reducing agent is carried out by lower ignition in a
barrel lined with alkaline furnace. First, a small part of the mixed charge is
loaded into the reactor, that is, ignition. After the beginning of the reaction
and then add the rest of the charge. Is typically used for smelting Gao Fantie
(containing vanadium 60 ~ 80%), the recovery rate was slightly lower than
electrical silicon thermal method, about 90-95%.

Features of Ferro Vanadium
01.
Ferrovanadium is an important alloy additive in iron and steel industry.
Vanadium improves the strength, toughness, ductility and heat resistance of
steel.

02.
High strength low alloy steel (HSLA) containing vanadium is widely used in the
production and construction of oil/gas pipelines, buildings, Bridges, rails,
pressure vessels, carriage frames and so on because of its high strength.

03.
The application range of various vanadium steel is more and more wide, and the
related talents are more and more important.

As one of ferro vanadium producers, we will do our best to meet all the needs
of customers.

More kinds of refractory metal products, please visit our website.

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