High-chromium and high-titanium vanadium-titanium magnetite blast furnace iron-smelting furnace burden and blast furnace smelting method thereof
A vanadium-titanium magnetite and blast furnace ironmaking technology, applied in the field of ironmaking, can solve problems such as insufficient research, low utilization efficiency of iron, vanadium, and titanium, and environmental pollution
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Embodiment 1
[0041] Step 1: Mix high-chromium and high-titanium vanadium-titanium concentrate powder with ordinary iron ore powder and auxiliary materials to make sintered ore. The mass ratio of high-chromium and high-titanium vanadium-titanium concentrate in the sintered ore is controlled at 40% to 50% %, ordinary iron ore powder 20-40%, coke powder 4-5%, flux: 10-15%, and the alkalinity of sintered ore is controlled between 2.2 and 2.5;
[0042] Step 2: Making high-chromium and high-titanium vanadium-titanium concentrate powder into pellets, the raw materials contain the following components in weight ratio: 97-99% of high-chromium and high-titanium vanadium ferromagnetite concentrate, 1-3% of bentonite ;
[0043] Step 3: 67% sintered ore, 28% pelletized ore and 5% common lump ore are mixed into the blast furnace according to mass percentage;
[0044] Step 4: Smelting in blast furnace, specific parameters: air temperature 1220°C, oxygen enrichment rate up to 2%, injection coal volume 13...
Embodiment 2
[0051] Step 1: Mix high-chromium and high-titanium vanadium-titanium concentrate powder with ordinary iron ore powder and auxiliary materials to make sintered ore. The mass ratio of high-chromium and high-titanium vanadium-titanium concentrate in the sintered ore is controlled at 40% to 50% %, ordinary iron ore powder 20-40%, coke powder 4-5%, flux: 10-15%, and the alkalinity of sintered ore is controlled between 2.2 and 2.5;
[0052] Step 2: Making high-chromium and high-titanium vanadium-titanium concentrate powder into pellets, the raw materials contain the following components in weight ratio: 97-99% of high-chromium and high-titanium vanadium ferromagnetite concentrate, 1-3% of bentonite ;
[0053] Step 3: 69% sintered ore, 27% pelletized ore and 4% common lump ore are mixed into the blast furnace according to mass percentage;
[0054] Step 4: Smelting in blast furnace, specific parameters: air temperature 1225°C, oxygen enrichment rate up to 3%, injection coal volume 13...
Embodiment 3
[0058] Step 1: Mix high-chromium and high-titanium vanadium-titanium concentrate powder with ordinary iron ore powder and auxiliary materials to make sintered ore. The mass ratio of high-chromium and high-titanium vanadium-titanium concentrate in the sintered ore is controlled at 40% to 50% %, ordinary iron ore powder 20-40%, coke powder 4-5%, flux: 10-15%, and the alkalinity of sintered ore is controlled between 2.2 and 2.5;
[0059] Step 2: Making high-chromium and high-titanium vanadium-titanium concentrate powder into pellets, the raw materials contain the following components in weight ratio: 97-99% of high-chromium and high-titanium vanadium ferromagnetite concentrate, 1-3% of bentonite ;
[0060] Step 3: 71% sintered ore, 26% pelletized ore and 3% common lump ore are mixed into the blast furnace according to mass percentage;
[0061] Step 4: Smelting in blast furnace, specific parameters: air temperature 1230°C, oxygen enrichment rate up to 4%, injection coal volume 13...
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