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

A technology for pellets and vanadium-titanium ore, applied in the field of iron and steel smelting, can solve the problems of high content, great influence on the stable operation of furnace protection, low TFe content, etc. The effect of blast furnace age

Inactive Publication Date: 2015-02-04
PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

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

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0021] Use vanadium-titanium iron ore powder, vanadium extracting tailings, iron concentrate powder and bentonite as raw materials, and make proportioning according to the composition requirements of vanadium-titanium ore powder, vanadium extraction tailings, iron concentrate powder and furnace protection pellets Adjustment, the specific ingredients are: 10wt% vanadium extraction tailings + 53wt% white horse vanadium ilmenite powder + 37wt% iron concentrate powder. After the batching is completed, 1.5wt% bentonite is added for mechanical stirring and mixing. After the mixing is completed, 5wt% water is added for pelletizing treatment. The composition range of the obtained pellets is: TFe 53.55%, SiO 2 7.92%, MgO 2.55%, Al 2 o 3 2.78%, MnO 0.78%, V 2 o 5 0.57%, TiO 2 6.93%.

example 2

[0023] Use vanadium-titanium iron ore powder, vanadium extracting tailings, iron concentrate powder and bentonite as raw materials, and make proportioning according to the composition requirements of vanadium-titanium ore powder, vanadium extraction tailings, iron concentrate powder and furnace protection pellets Adjustment, the specific ingredients are: 30wt% vanadium extraction tailings + 35wt% white horse vanadium ilmenite powder + 35wt% iron concentrate powder. After the batching is completed, 1.5wt% bentonite is added for mechanical stirring and mixing. After the mixing is completed, 8wt% water is added for pelletizing treatment. The composition range of the obtained pellets is: TFe 52.86%, SiO 2 5.56%, MgO 2.82%, Al 2 o 3 2.63%, MnO 0.20%, V 2 o 5 0.61%, TiO 2 10.13%.

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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 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B1/248C21B5/00
Inventor 陈炼王敦旭陈永戈文荪曾建华王建蒋龙奎黄云陆高峰冉茂华
Owner PANZHIHUA IRON & STEEL RES INST OF PANGANG GROUP
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