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A kind of vanadium-titanium magnetite blast furnace charge structure and blast furnace smelting method

A vanadium-titanium magnetite and charge structure technology, which is applied in the field of vanadium-titanium magnetite blast furnace charge structure and blast furnace smelting, can solve the problems of high difficulty in smelting vanadium-titanium magnetite, high fuel consumption, and low furnace grade. Achieve the effects of low price, good air permeability of the material column, and reduced return rate

Active Publication Date: 2019-05-28
SICHUAN DESHENG GRP VANADIUM & TITANIUM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The grade of TFe in the blast furnace charge is low, and the unreasonable structure of the charge makes it difficult to smelt vanadium-titanium magnetite, fuel consumption is high, and the cost is high

Method used

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  • A kind of vanadium-titanium magnetite blast furnace charge structure and blast furnace smelting method
  • A kind of vanadium-titanium magnetite blast furnace charge structure and blast furnace smelting method
  • A kind of vanadium-titanium magnetite blast furnace charge structure and blast furnace smelting method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Prepare vanadium-titanium sinter with vanadium-titanium iron concentrate, ordinary iron concentrate, ordinary powder ore, ore powder, the above-mentioned rich ore powder, active lime and coke, according to the ratio of raw materials in Table 1, through mixing, screening, and sintering , the returned ore powder is ordinary ore powder and rich ore powder obtained by sieving and returning the vanadium-titanium sintered ore, numbered A to B.

[0031] Table 1

[0032]

Embodiment 2

[0034] The raw materials for preparing the vanadium-titanium pellets include: 95-96% of vanadium-titanium magnetite, 1-2% of coal powder, 1% of magnesium oxide, 1% of vegetable protein glue and 1% of magnesite. According to the ratio of raw materials in Table 2, the vanadium-titanium pellets, numbered D to H.

[0035] Table 2

[0036]

Embodiment 3

[0038] Determination of physical and chemical indicators of vanadium-titanium sinter, vanadium-titanium pellets and pig iron, the measurement results are shown in Table 3-4.

[0039] table 3

[0040]

[0041]

[0042] Table 4

[0043]

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Abstract

The invention discloses a vanadium-titanium magnetite blast furnace burden structure. The furnace burden structure comprises mineral aggregates and coke nuts, and the mineral aggregates are composed of, by mass, 45-50% of vanadium-titanium sintered ore, 8-12% of vanadium-titanium sintered ore nuts, 34-40% of vanadium-titanium pellets, and 5-10 % of raw ore. The use ratio of vanadium-titanium magnetite is increased by optimizing the furnace burden structure, the vanadium-titanium magnetite resources are sufficiently utilized, and cost is reduced.

Description

technical field [0001] The invention relates to the technical field of blast furnace ironmaking, in particular to a vanadium-titanium magnetite blast furnace charge structure and a blast furnace smelting method. Background technique [0002] With the shortage of natural resources, there is less and less high-quality iron ore, and the price of ore continues to rise, which has brought a huge impact on the steel industry. The blast furnace process has always been the most cost-consuming link in the smelting process, and its cost accounts for about 60-70% of the entire smelting process of iron and steel enterprises. Therefore, the key link to reduce steel cost should be placed on the optimization of the blast furnace process. [0003] Modern blast furnace smelting must realize efficient and low-cost smelting in order to gain space for survival and development. At present, the ore and coke are distributed alternately in layers in the blast furnace. The grade of TFe in the blast...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21B5/00
CPCC21B5/008
Inventor 刘德安何益先江青芳王远征张杰毛晓斌
Owner SICHUAN DESHENG GRP VANADIUM & TITANIUM CO LTD
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