Furnace maintenance vanadium-titanium pellet for normal blast furnace and production method thereof

Abstract

The invention provides a furnace maintenance vanadium-titanium pellet for normal blast furnace and a production method thereof. The vanadium-titanium pellet comprises the following constituents: 50%-55% of TFe, 5%-8% of SiO2, 2%-4% of MgO, 2%-3% of Al2O3, less than 1% of MnO, less than 1% of V2O5 and 5%-15% of TiO2. The method comprises the following steps of: dosing with vanadium-titanium mineral powder, vanadium extraction tailings and iron ore concentrate powder; further adding 1%-5% of adhesive, and then, mixing materials while stirring; and after mixing the materials, further adding water for pelletizing, wherein the dosage of the vanadium-titanium mineral powder, the vanadium extraction tailings and the iron ore concentrate powder is determined according the requirements on the constituents of the furnace maintenance vanadium-titanium pellet for normal blast furnace. The furnace maintenance vanadium-titanium pellet can be used for improving the slag melting point and viscosity of the blast furnace in normal iron ore smelting process on the premise of meeting the normal production of the blast furnace, and after the furnace maintenance vanadium-titanium pellet is used, the furnace condition of the blast furnace can be improved, the smooth operation of the blast furnace is guaranteed, and the furnace age of the blast furnace is prolonged.

Description

technical field [0001] The invention relates to the field of iron and steel smelting, in particular to a furnace-protected vanadium-titanium pellet for ordinary blast furnaces capable of effectively utilizing vanadium extraction tailings and a production method thereof. Background technique [0002] Usually, the blast furnace is the most important main equipment of modern large-scale iron and steel complexes, which is related to the smooth production of the entire iron and steel enterprises. Therefore, whether the blast furnace runs smoothly or not is not only related to the production cost of the blast furnace, but also related to the subsequent steelmaking production organization. The lifetime of a blast furnace depends to a certain extent on the degree of erosion of the hearth and furnace bottom. In order to extend the service life of a generation of furnaces, although people have taken various measures in terms of material, structure, construction quality, and smelting ...

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Problems solved by technology

[0004] However, the content of TFe in the furnace protection pellets of the above-mentioned patent application is low and TiO 2 If the content is too high, it will have a great impact on the stability and operability of the furnace protection