Ferro titanium parameters

Titanium Ferro specifications: 30/40/70 silver gray, 10-80mm

Supply capacity: 10 tons/day

Ferro titanium applications

Mainly used for smelting alloy steel. About 90% of the vanadium consumed globally is used in the steel industry. In ordinary low-alloy steel, vanadium mainly has the effect of refining grains, increasing the strength of the steel and inhibiting its aging; in alloy structural steel, it refines the grains and improves the strength and toughness of the steel; in spring steel, it interacts with Chromium or manganese interact and are used together to increase the elastic limit of steel and improve 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, and improves its quality. Wear resistance, extending the service life of tools; In heat-resistant steel and hydrogen-resistant steel, vanadium also plays a beneficial role; Vanadium added to cast iron promotes the formation of pearlite due to the formation of carbides, stabilizes cementite, The shape of graphite particles is small and uniform, refining the matrix grains, thereby improving the hardness, tensile strength and wear resistance of cast iron. Casting.

FeV50 and FeV80 are suitable for any vanadium-containing steel grade and are added in the same way during steelmaking. Although FEV80 has a higher melting temperature, due to the dissolution process of ferrovanadium in molten steel, it is suitable for both converter steelmaking and electric furnace steelmaking.

Ferrovanadium is mainly used as an alloy additive in steelmaking. After adding ferrovanadium to steel, the hardness, strength, wear resistance and ductility of the steel can be significantly improved, and the cutting performance of the steel can be improved. Ferrovanadium is commonly used in the production of carbon steel, low-alloy strength steel, high-alloy steel, tool steel and cast iron. Ferrovanadium is supplied in block or powder form.

Ferrotitanium smelting method

Electric silicon heating method: Flake vanadium pentoxide uses 75% ferrosilicon and a small amount of aluminum as the reducing agent, and is refined in two stages of reduction and refining in an alkaline electric arc furnace to obtain qualified products. During the reduction period, 60-70% of the total reducing agent and flake vanadium pentoxide in a furnace is put into the electric furnace, and silicon thermal reduction is performed under high calcium oxide slag. When the V2O5 in the slag is less than 0.35%, the slag is released (called lean slag, which can be discarded or used as building materials) and enters the refining period. At this time, add flake vanadium pentoxide and lime to remove excess silicon, aluminum, etc. in the alloy liquid. When the ferroalloy composition meets the requirements, the slag can be discharged to produce ferroalloy. The slag released in the later stage of refining is called rich slag (containing 8~12% V2O5), which is returned to the furnace for reuse when charging. Generally, the alloy liquid is cast into a cylindrical ingot, and the finished product is obtained after cooling, demoulding, crushing, and slag removal. This method is generally used to smelt fervanadium containing 40~60% vanadium. The recovery rate of vanadium can reach 98%. Refining each ton of ferrovanadium consumes approximately 1,600 kilowatt hours of electricity.

The thermite method uses aluminum as the reducing agent and uses the downward ignition method to smelt in a furnace barrel lined with an alkaline furnace. A small portion of the mixed charge is first placed into the reactor and ignited. After the reaction starts, the remaining materials are added in sequence. It is usually used to smelt high vanadium iron (containing 60~80% vanadium). The recovery rate is slightly lower than the electrosilicothermal method, about 90~95%.

Characteristics of ferrotitanium

Commonly used ferrovanadium contains 40%, 60% and 80% vanadium. The main raw material for the production of vanadium-titanium magnetite in my country is vanadium-titanium magnetite. After beneficiation and enrichment, vanadium-containing pig iron is produced in a blast furnace, and vanadium slag is extracted in the atomizing furnace or converter blowing process. After the vanadium slag is crushed, sodium salt (soda ash, table salt or anhydrous Glauber's salt) is added for sodium oxidation roasting to turn the vanadium into soluble sodium metavanadate (NaVO3). After leaching and purification, ammonium sulfate is added to precipitate the polyvanadate. The ammonium [(NH4)2V6O16] is then melted and cast into sheets of vanadium pentoxide via deamination. The required ingredients are V2O597~99%, P<0.05%, S<0.05%, Na2O+K2O<1.5%. In addition, vanadium pentoxide can be directly extracted from vanadium-containing iron concentrate or vanadium-containing carbonaceous shale through chemical treatment.