Oxygen blast furnace iron-making process adopting water-coal-slurry as fuel
A technology of blast furnace ironmaking and coal water slurry, which is applied in blast furnaces, blast furnace details, furnaces, etc., can solve the problems of large emissions, pollution, and low productivity, and achieve the effects of eliminating pollution, reducing environmental pollution, and improving blast furnace productivity
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Embodiment 1
[0030] Theoretical calculations show that 75%, 15% pellets and 10% lump ore are used as raw materials in the oxygen blast furnace, and coal-water slurry is injected from the tuyere and pure oxygen is blown in. The production technical indicators are as follows:
[0031] CWS dosage: 200kg / tHM
[0032] Oxygen consumption: 289m 3 / tHM
[0033] Coke ratio: 376kg / tHM
[0034] Furnace circulating gas volume: 278m 3 / tHM
[0035] Furnace circulation gas composition: H 2 : 21.37% CO: 77.91% N 2 : 0.72%
[0036] Bosh gas composition: H 2 : 23.51% CO: 75.77% N 2 : 0.72%
[0037] Bosh gas volume: 1113m 3 / tHM
[0038] Theoretical combustion temperature: 2050°C
[0039] Furnace top gas volume: 1552m 3 / tHM
[0040]Top gas composition: H 2 : 8.86% CO: 33.34% CO 2 : 48.72%H 2 O: 8.4% N 2 : 0.68%.
Embodiment 2
[0042] Theoretical calculations show that 75%, 15% pellets and 10% lump ore are used as raw materials in the oxygen blast furnace, and coal-water slurry is injected from the tuyere and pure oxygen is blown in. The production technical indicators are as follows:
[0043] CWS dosage: 250kg / tHM
[0044] Oxygen consumption: 311m 3 / tHM
[0045] Coke ratio: 350kg / tHM
[0046] Furnace circulating gas volume: 280m 3 / tHM
[0047] Furnace circulation gas composition: H 2 : 21.64% CO: 77.64% N 2 : 0.72%
[0048] Bosh gas composition: H 2 : 26.23% CO: 73.05% N 2 : 0.72%
[0049] Bosh gas volume: 1139m 3 / tHM
[0050] Theoretical combustion temperature: 2041°C
[0051] Furnace top gas volume: 1576m 3 / tHM
[0052] Top gas composition: H 2 : 8.93% CO: 33.20% CO 2 : 48.56%H 2 O: 8.60% N 2 : 0.71%.
Embodiment 3
[0054] Theoretical calculations show that 75%, 15% pellets and 10% lump ore are used as raw materials in the oxygen blast furnace, and coal-water slurry is injected from the tuyere and pure oxygen is blown in. The production technical indicators are as follows:
[0055] CWS dosage: 300kg / tHM
[0056] Oxygen consumption: 334m 3 / tHM
[0057] Coke ratio: 298kg / tHM
[0058] Furnace circulating gas volume: 281m 3 / tHM
[0059] Furnace circulation gas composition: H 2 : 21.77% CO: 77.50% N 2 : 0.73%
[0060] Bosh gas composition: H 2 : 27.41% CO: 71.86% N 2 : 0.73%
[0061] Bosh gas volume: 1151m 3 / tHM
[0062] Theoretical combustion temperature: 2041°C
[0063] Furnace top gas volume: 1598m 3 / tHM
[0064] Top gas composition: H 2 : 8.95% CO: 33.02% CO 2 : 48.72%H 2 O: 8.61% N 2 : 0.70%.
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