Blast furnace burden and method for improving comprehensive feeding grade of vanadium titano-magnetite blast furnace

A technology of vanadium-titanium magnetite and furnace grade, which is applied in the field of blast furnace charge, can solve the problems of high pig iron cost, high profit, and low output, and achieve the effects of increasing blast furnace output, improving furnace grade, and reducing costs

Active Publication Date: 2014-04-16
PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The mass percentage of Fe element in the middle and low-grade lump ore in Panxi area is 20-30%. In the prior art, the use of this middle and low-grade lump ore will cause the comprehensive furnace grade of vanadium-titanium magnetite to be low, and the coke ratio high, low output
However, the method of using high-grade imported ore to prepare sinter and pellets to improve the grade of the blast furnace is highly dependent on imported ore from abroad, and the furnace charge is uneconomical, resulting in high pig iron costs, and it is difficult to obtain a high level in the international market. profit

Method used

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  • Blast furnace burden and method for improving comprehensive feeding grade of vanadium titano-magnetite blast furnace

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example 1

[0037] In this embodiment, the composition (mass percentage) of the blast furnace charge for improving the comprehensive grade of vanadium-titanium-magnetite blast furnace into the blast furnace is:

[0038] Vanadium-titanium sinter: 82%; vanadium-titanium pellets: 12.5%; acid lump ore: 2.5%; high-grade lump ore: 3%.

[0039] Put the above-mentioned blast furnace charge into the blast furnace for smelting, wherein, the composition of the blast furnace slag and the grade of the blast furnace entering the furnace are shown in Table 1.

example 2

[0041] In this embodiment, the composition (mass percentage) of the blast furnace charge for improving the comprehensive grade of vanadium-titanium-magnetite blast furnace into the blast furnace is:

[0042] Vanadium-titanium sinter: 77.5%; vanadium-titanium pellets: 15.5%; acid lump ore: 1%; high-grade lump ore: 6%.

[0043] Put the above-mentioned blast furnace charge into the blast furnace for smelting, wherein, the composition of the blast furnace slag and the grade of the blast furnace entering the furnace are shown in Table 1.

example 3

[0045] In this embodiment, the composition (mass percentage) of the blast furnace charge for improving the comprehensive grade of vanadium-titanium-magnetite blast furnace into the blast furnace is:

[0046] Vanadium-titanium sinter: 76%; vanadium-titanium pellets: 14%; acid lump ore: 0%; high-grade lump ore: 10%.

[0047] Put the above-mentioned blast furnace charge into the blast furnace for smelting, wherein, the composition of the blast furnace slag and the grade of the blast furnace entering the furnace are shown in Table 1.

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Abstract

The invention provides a blast furnace burden and a method for improving comprehensive feeding grade of a vanadium titano-magnetite blast furnace. The blast furnace burden comprises the components in percentage by weight as follows: 64%-90% of vanadium-titanium sintering ore, 1%-35% of vanadium-titanium pellet, 0-9% of acidic lump ore and 1%-10% of high-grade lump ore, wherein the weight percentage of Fe in the high-grade lump ore is 40%-65%, and the weight percentage of SiO2 is 5%-15%. The invention further discloses the method for improving the comprehensive feeding grade of the vanadium titano-magnetite blast furnace, and the method comprises the step that the blast furnace burden is subjected to blast furnace smelting. According to the invention, the feeding grade of the blast furnace can be improved, the production of the blast furnace is increased, the focal ratio is reduced, and the cost of the blast furnace burden is reduced.

Description

technical field [0001] The invention relates to a blast furnace charge and a method for improving the comprehensive charging grade of vanadium-titanium-magnetite blast furnace, more specifically, the invention relates to a low-cost high-grade vanadium-titanium-magnetite blast furnace using high-grade lump ore as raw material Blast furnace charge and method with integrated furnace grade. Background technique [0002] my country's vanadium-titanium magnetite deposits are widely distributed and rich in reserves. The reserves and mining volume rank third in the country's iron ore deposits, mainly distributed in Panzhihua-Xichang, Sichuan and other regions. Among them, the Panzhihua-Xichang area is the main metallogenic belt of vanadium-titanium magnetite in my country and one of the important producing areas of similar deposits in the world. Vanadium-titanium magnetite is not only an important source of iron, but also associated with various components such as vanadium, titaniu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C21B5/00C21B5/04
Inventor 石军陆高峰林文康邹仕华曾中兴李清明江凌黄云毛建林胡勇张志强饶家庭刘燕姚国勋陈剑锋朱香
Owner PANGANG GRP XICHANG STEEL & VANADIUM CO LTD
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