Application of a kind of biomass active lime in reducing iron
A technology of activated lime and biomass, applied in furnaces, furnace types, blast furnaces, etc., can solve the problems of shortage of lime and high activity, and achieve the effects of low burst index, improved metallurgical properties, and high compressive strength
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Embodiment 1
[0058] Step 1, wash the conch and place it in a corundum crucible, add 3% of its mass powdered coal, heat up to 1200°C and roast for 30 minutes to obtain bioactive lime, wherein the calcium oxide content is 87.50%, and the lime with biomass activity is 337.
[0059] In step 2, the pellets are made of vanadium-titanium magnetite and a reducing agent, and the pellets are made by mixing the following raw materials in weight percentages: 5.00kg of fine iron powder, 5% of coke powder, and 3% of bentonite. The iron taste of iron concentrate powder is 56.15%. The pellets were roasted at 1250°C for 30min.
[0060] The method for preparing reduced iron in this example is as follows: Weigh 100 g of pellets after roasting, add 7.05% active quick lime, 5% coke powder, and 3% silicon dioxide to an induction furnace, and place them in an induction furnace at a temperature of 1450 ° C. The product was obtained under heat preservation for 60 minutes, and then the product was separated from ...
Embodiment 2
[0064] Step 1, wash the scallops and place them in a corundum crucible, add 5% of the mass of coal powder, heat up to 1200°C and roast for 30 minutes to obtain biologically active lime, wherein the calcium oxide content is 86.25%, and the activity of biomass active lime is for 153.
[0065] Step 2, the pellets in this embodiment are made of vanadium-titanium magnetite and a reducing agent, and the pellets are made by mixing the following raw materials in weight percentages: 5.00 kg of fine iron powder, 5% of coke powder, and 3% of bentonite. The iron grade of iron fine powder is 49.73%. The pellets were roasted at 1250°C for 30min.
[0066] The method for preparing reduced iron in this example is as follows: Weigh 100 g of pellets after roasting, add 6.84% active quick lime, 5% coke powder, and 3% silicon dioxide to an induction furnace, and place them in an induction furnace at a temperature of 1450°C. The product was obtained under heat preservation for 60 minutes, and the...
Embodiment 3
[0070] Step 1, wash the oysters and place them in a corundum crucible, add 4% of the mass of coal powder, heat up to 1200°C and roast for 30 minutes to obtain biologically active lime, wherein the calcium oxide content is 88.21%, and the biomass active lime The activity was 198.
[0071] Step 2, the pellets in this embodiment are made of vanadium-titanium magnetite and a reducing agent, and the pellets are made by mixing the following raw materials in weight percentages: 5.00 kg of fine iron powder, 5% of coke powder, and 3% of bentonite. The iron grade of iron fine powder is 50.61%. The pellets were roasted at 1250°C for 30min.
[0072] The method for preparing reduced iron in this example is as follows: Weigh 100 g of pellets after roasting, add 7.16% active quick lime, 5% coke powder, and 3% silicon dioxide to an induction furnace, and place them in an induction furnace at a temperature of 1450 ° C. The product was obtained under heat preservation for 60 minutes, and then...
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