Preparation method of vanadium iron
A vanadium ferroalloy and a qualified technology, applied in the field of preparation of vanadium ferroalloy, can solve problems such as difficulty in controlling vanadium content, achieve the effects of improving smelting kinetics and thermodynamic conditions, high smelting efficiency, and accelerating aluminothermic reaction
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Embodiment 1
[0043] with V 2 o 5 When used as smelting raw materials (160 parts in total), the aluminum distribution coefficient of the first and second phases is 1.05, the aluminum distribution coefficient of the third phase raw material is 1.0, the mass ratio of lime to vanadium oxide is 1.5:10, and iron The mass ratio of the input amount to the vanadium oxide is 11:20. For V that meets the requirements of raw material composition 2 o 5 , aluminum, iron and lime are mixed and fed in 3 phases, the feeding order is 4:3:1, and the slag is tapped twice and the iron is tapped once. The first phase of smelting raw materials is added to V 2 o 5 80 parts, 41 parts of aluminum, 44 parts of iron, 12 parts of lime; the raw material of the second phase is V 2 o 5 60 parts, 30 parts of aluminum, 33 parts of iron filings, 9 parts of lime; the raw material composition of the third phase is V 2 o 5 20 parts, aluminum 10 parts, iron filings 11 parts, lime 3 parts. The amount of slag in the firs...
Embodiment 2
[0045] V 2 o 3 and V 2 o 5 The ratio is 7:1 (V 2 o 3 140 copies; V 2 o 5 20 parts), the first and second phase raw materials have an aluminum ratio of 1.05, the third phase raw material aluminum ratio is 1.0, the mass ratio of lime dosage to vanadium oxide is 1.5:10, and the ratio of iron dosage to vanadium oxide The mass ratio is 13:20, and the mixture is mixed as required. Join V in the first phase 2 o 5 20 copies, V 2 o 3 60 parts, 34 parts of aluminum, 49 parts of iron, 16 parts of lime; add V in the second phase 2 o 3 60 parts, 21 parts of aluminum, 39 parts of iron, 9 parts of lime; the raw material composition of the third phase is V 2 o 5 20 parts, aluminum 10 parts, iron filings 11 parts, lime 3 parts. The amount of slag in the first two taps was 71 and 52 parts respectively, and the vanadium content in the slag was 1.73% and 1.87% respectively; the vanadium content in the slag before the third phase of iron tapping was 2.02%. The energization time of ...
Embodiment 3
[0047] V 2 o 3 and V 2 o 5 The ratio is 6:2 (V 2 o 3 120 copies; V 2 o 5 40 parts), the aluminum distribution coefficient in the first two phases was adjusted to 1.10, the aluminum distribution coefficient in the third phase was 0.80, and the mass ratio of lime dosage to vanadium oxide was 2:10. Join V in the first phase 2 o 5 20 copies, V 2 o 3 60 parts, aluminum 35 parts, iron 50 parts, lime 16 parts; add V in the second phase 2 o 3 60 parts, 20 parts of aluminum, 38 parts of iron, 9 parts of lime; add V in the third phase 2 o 5 20 parts, aluminum 8 parts, iron 11 parts, lime 5 parts. The amount of slag in the first two taps was 71 and 51 parts respectively, and the vanadium content in the slag was 0.85% and 0.73% respectively; the vanadium content in the slag before the third phase of iron tapping was 1.85%, and the average vanadium content in the slag was 1.24%. The single furnace poor slag time is 165min, the refining time is 47min, and the total smelting t...
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