Rotating furnace smelting method with high steel scrap consumption
A converter smelting and steel scrap technology, which is applied in the field of iron and steel smelting, can solve the problems of increased production costs, large heat loss, and increased production costs, and achieve the effects of reducing steelmaking production costs, increasing TFe content, and alleviating market backlogs
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[0045] Example 1:
[0046] The iron and steel materials entering the furnace are shown in Table 1:
[0047] Table 1
[0048]
[0049] According to the Si content in the molten iron, the scrap ratio is determined to be 30%, and the iron ore content in the scrap accounts for 30%. The scrap steel is made of light and thin materials. The loading capacity is 100 tons, including 70 tons of molten iron, 21 tons of scrap steel and 9 tons of iron ore. Taking the scrap ratio of 10% as the base figure, the scrap steel was increased by 13.3 tons, the iron ore was 6.7 tons, and the molten iron was reduced by 20 tons.
[0050] According to the heat balance formula:
[0051] Q Iron hydration =147.70*C%+269.70*Si%+70.00*Mn%+217.30*P%
[0052] =862.47(MJ / t)
[0053] Q Hot metal =61.9+0.88*T
[0054] =1250(MJ / t)
[0055] Q Scrap steel =147.70*C%+269.70*Si%+70.00*Mn%+217.30*P%
[0056] =102.10(MJ / t)
[0057] Q Scrap =0.74T=14.8(MJ / t)
[0058] Q Iron ore =147.70*C%+269.70*Si%+70.00*Mn%+217.30*P%
[0059] =92...
Example Embodiment
[0070] Example 2:
[0071] The steel materials entering the furnace are shown in Table 3:
[0072] table 3
[0073]
[0074] According to the Si content in the molten iron, the scrap ratio is determined to be 25%, and the iron ore content in the scrap accounts for 33%. The scrap is made of washed beans, and the furnace capacity is 100 tons, including 75 tons of molten iron, 16.7 tons of scrap steel, and 8.3 tons of iron ore. Take the scrap ratio of 10% as the base, increase scrap steel 10t, iron ore 5t, and reduce 15t hot metal.
[0075] According to the heat balance formula:
[0076] Q Iron hydration =147.70*C%+269.70*Si%+70.00*Mn%+217.30*P%
[0077] =822.02(MJ / t)
[0078] Q Hot metal =61.9+0.88*T MJ / t
[0079] =1294(MJ / t)
[0080] Q Scrap steel =147.70*C%+269.70*Si%+70.00*Mn%+217.30*P%
[0081] =310.08(MJ / t)
[0082] Q Scrap =0.74T=14.8(MJ / t)
[0083] Q Iron ore =147.70*C%+269.70*Si%+70.00*Mn%+217.30*P%
[0084] =920.03(MJ / t)
[0085] Q Iron ore =0.74T=14.8(MJ / t)
[0086] Calculated by ...
Example Embodiment
[0094] Example 3:
[0095] The iron and steel material index into the furnace is shown in Table 5:
[0096] table 5
[0097]
[0098] According to the Si content in the molten iron, the scrap ratio is determined to be 35%, and the iron ore content in the scrap steel accounts for 35%. The scrap is heavy-duty scrap steel. The loading capacity is 100 tons, including 65 tons of molten iron, 22.8 tons of scrap steel, and 12.2 tons of iron ore. Based on the scrap ratio of 10%, 16.7t of scrap steel and 8.3t of iron ore were added, and 25t of molten iron was reduced.
[0099] According to the heat balance formula:
[0100] Q Iron hydration =147.70*C%+269.70*Si%+70.00*Mn%+217.30*P%
[0101] =902.93(MJ / t)
[0102] Q Hot metal =61.9+0.88*T(MJ / t)
[0103] =1206(MJ / t)
[0104] Q Scrap steel =147.70*C%+269.70*Si%+70.00*Mn%+217.30*P%
[0105] =311.78(MJ / t)
[0106] Q Scrap =0.74T=14.8(MJ / t)
[0107] Q Iron ore =147.70*C%+269.70*Si%+70.00*Mn%+217.30*P%
[0108] =920.03(MJ / t)
[0109] Q Iron ore =0.74T=1...
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