Oxygen supply system of Vanadium extraction technology of BOF blowing

Oxygen consumption:

Refers to the 1t oxygen blowing into molten iron containing vanadium for semi steel oxygen consumption, the unit is m3/t. According to the general basis: hot metal composition, different blowing mode supply intensity and stirring. Converter re-vanadium oxygen consumption of per ton iron is within 14 to 18m3, 16000 to 18000m3/h.

The intensity of oxygen supply:

The intensity of oxygen supply of oxygen consumption per ton of metal refers, in unit time unit is m3/ (t.min).

The oxidation reaction of v-extraction process affects the intensity of oxygen supply intensity, big splash seriously, over an hour slow reaction, converting time is long, will cause the temperature of the molten pool increase, over temperature, leading to decarburization reaction dramatically accelerated, semi steel residue from the new increasing vanadium content.

General in the early oxygen can improve oxygen supply intensity, decreased at the later stage.

Oxygen pressure and the gun position

Oxygen pressure: under the same oxygen supply conditions, oxygen pressure can strengthen the bath stirring strengthen dynamics conditions for vanadium and other elements of the oxidation rate. Oxygen pressure control is more suitable in the range of 0.7 to 0.8MPa.

Gun: gun position refers to the oxygen lance nozzle end from the pool surface height. Such as vanadium Russia Nizhny tagil 160t oxygen top blown converter, blowing lance height control in early 2.0m to late lance position is reduced to 1m. When the silicon content in molten iron is higher, the gun position remained lower limit.

In general, the primary product of vanadium is a by-product in with other metals and oil extraction or use to produce (V2O3or V2O5). In iron ore by smelting vanadium is dissolved into molten iron, molten iron by oxidation, slag (10% to 25% V2O5), and then through the processing production of calcination / leaching process for vanadate or vanadium oxide of the final product. In the roasting / reached 1.8% on the V2O5 content in leaching process of mineral processing production of vanadate or vanadium oxide directly. Power plant fly ash recycling, waste catalyst and other residue contain vanadium. The process is the roasting / leaching process generates vanadate or vanadium oxide.