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在一代高炉炉龄的中后期阶段，在入炉料结构中配加一定量的钒钛烧结矿或含钒钛的钢渣等物料入炉冶炼，改善了渣铁的理化性能，减轻了对炉缸、炉底的浸蚀，从而起到护炉，使高炉寿命延长给企业带来了经济效益。
In the middle and later stages of the blast furnace age, adding a certain amount of vanadium-titanium sinter or vanadium-titanium-containing slag into the furnace charge structure into the furnace smelting, improving the physical and chemical properties of slag iron, reducing the hearth, Bottom erosion, which play a protective furnace, so that blast furnace life extension to the enterprise has brought economic benefits.