Ferro VanadiumMetallurgical Product Description

Ferrovanadium is an iron alloy that is obtained by reducing vanadium pentoxide with carbon in an electric furnace. It can also be obtained by reducing vanadium pentoxide by the silicon thermal method of an electric furnace. It is widely used as an element additive in smelting vanadium-containing alloy steel and alloy cast iron and is also used to make permanent magnets. Ferrovanadium produced in China includes V401, V402, and other varieties, containing about 40% vanadium.

Product Parameters

Size: 03 – 20mm, 10 – 50mm
Color: Silver Gray/Gray
Melting point: 1800°C
Packing: Steel Drums (25Kgs, 50Kgs, 100Kgs & 250Kgs) or 1 Ton bags.

Product Advantages

The atomic weight of vanadium is 50. 9414, and its outer electronic structure is 3d4s. Melting point 1902℃. Boiling point 3410℃. The density is 6. 1g/cm (20℃). Vanadium is a malleable metal. The binary phase diagram of vanadium and iron is shown in Figure 1. Vanadium forms a continuous solid solution with iron. When the temperature is lower than 1210°C and in the range of V35% to 55%, the intermetallic compound α (FeV) phase is formed.

Manufacture And Use

The abundance of vanadium in the earth’s crust is 135×10%. There are more than 70 kinds of vanadium minerals, but there are very few single vanadium deposits (only Mina Lagra in Peru is a single deposit. It has been mined.), and they are all symbiotic with other minerals. The raw materials used to produce vanadium include vanadium titanium magnetite (containing VO.4% ~ 1.4%), uranium-vanadium ore (containing V2O51.5% ~ 2.0%), crude oil ash (containing V2O520% ~ 40%), containing vanadium Ferrophosphorus (containing V3%~6%), waste vanadium catalyst, residue from alumina production, etc. These raw materials contain low vanadium and require hydrometallurgy. First, vanadium pentoxide is extracted from these raw materials, and then the vanadium pentoxide is smelted into ferrovanadium and vanadium additives. Vanadium-titanium magnetite concentrate is the main raw material for the production of vanadium, and 90% of the world’s vanadium production is produced with this raw material.

Applications

Mainly used for smelting alloy steel. About 90% of the vanadium consumed in the world is used in the steel industry. In ordinary low-alloy steel, vanadium mainly refines the grains, increases the strength of the steel and inhibits its aging effect; in alloy structural steel, it refines the grains, increasing the strength and toughness of the steel; in spring steel, it interacts with chromium or manganese Used together, it increases the elastic limit of steel and improves its quality; in tool steel it mainly refines the structure and grains of steel, increases the tempering stability of steel, enhances its secondary hardening effect, improves its wear resistance, and prolongs The service life of the tool; in heat-resistant steel and hydrogen-resistant steel, vanadium also plays a beneficial role; the vanadium added to cast iron promotes the formation of pearlite due to the formation of carbides, stabilizes cementite, and the shape of graphite particles is fine and Uniform and refine the grains of the matrix, thereby improving the hardness, tensile strength and wear resistance of the casting.