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Sintering method of fine Baima vanadium-titanium magnetite concentrate

A vanadium-titanium-magnetite concentrate and sintering method technology, which is applied in the field of iron and steel metallurgy, can solve the problems that the sintering and strengthening technology of vanadium-titanium magnetite concentrate has not been reported, and achieves the effects of making up for adverse effects, enhancing automatic heat storage, and improving strength.

Active Publication Date: 2013-04-03
PANGANG GROUP RESEARCH INSTITUTE CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, the research on the sintering strengthening technology of fine-grained high-titanium and low-silicon vanadium-titanium magnetite concentrate has not been reported at home and abroad.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] Under the conditions of sintering raw materials including fine white horse vanadium-titanium magnetite concentrate, the water in the mixture mixed with water is 7.2%, the carbon content in the mixture is 4.8%, and the height of the material layer is 640mm. Concentration of 1.5% CaCl 2 solution. The results show that, compared with the base period (that is, the production period without this technology), the total content of binder phase in sintered ore increases by 2%, the drum strength of sintered ore increases by 0.83%, the yield increases by 1.67%, and the output increases by 2.18% %, solid fuel consumption decreased by 1.10Kg / t 矿 , the low-temperature reduction pulverization rate of sintered ore (RDI -3.15 ) from 64.71% to 13.42%, a drop of 79.26%.

example 2

[0031] Under the conditions of sintering raw materials including fine white horse vanadium-titanium magnetite concentrate, the water in the mixture mixed with water is 7.3%, the carbon content in the mixture is 4.9%, and the height of the material layer is 660mm. Concentration of 2.0% CaCl 2 solution. The results show that compared with the baseline period, the total content of binder phase in sinter increased by 3.2%, the strength of sinter drum increased by 1.15%, the yield increased by 2.27%, the output increased by 3.06%, and the consumption of solid fuel decreased by 1.81Kg / t 矿 , the low-temperature reduction pulverization rate of sintered ore (RDI -3.15 ) from 64.71% to 9.44%, a drop of 85.41%.

example 3

[0033]Under the conditions of sintering raw materials including fine white horse vanadium-titanium magnetite concentrate, the water in the mixture after adding water is 7.4%, the carbon content in the mixture is 4.95%, and the height of the material layer is 680mm. Concentration of 2.5% CaCl 2 solution. The results show that compared with the baseline period, the total content of binder phase in sinter increased by 4.3%, the strength of sinter drum increased by 1.56%, the yield increased by 2.87%, the output increased by 3.90%, and the consumption of solid fuel decreased by 2.24Kg / t 矿 , the low-temperature reduction pulverization rate of sintered ore (RDI -3.15 ) from 64.71% to 7.25%, a drop of 88.80%.

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PUM

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Abstract

The invention discloses a sintering method of fine Baima vanadium-titanium magnetite concentrate. The sintering method comprises the sequential steps of burdening, mixing with water, pelletizing, igniting and sintering, spraying CaCl2 solution and blast furnace processing, wherein based on mass, the water content in the mixed material in the water mixing step is 7.2-7.5%; the carbon content in the mixed material is 4.8-5.0%; the material layer height when igniting and sintering is 640-700 mm; and the mass concentration of the sprayed CaCl2 solution is 1.5-3%. Through optimizing of the sintering technical parameters, comprehensively improving of the water content of the sintering mixed material, the carbon content in the mixed material and the height of the material layer, the grain composition and the sinter components of the mixed material when the fine Baima vanadium-titanium magnetite concentrate is sintered are greatly improved; the sintering atmosphere, flux mineralization, sintering heat system and mineral crystallization in the sintering process are effectively strengthened, so as to improve the sinter product yield and quality, and enable the yield and the quality of the sinter and the metallurgical performance to be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of iron and steel metallurgy, and more specifically relates to a sintering method of fine white horse vanadium-titanium magnetite concentrate. Background technique [0002] Baima Mine is one of the four major mines in the Panxi region. With the gradual depletion of resources in the original mine (Panzhihua vanadium-titanium magnetite), Baima Mine has become the main raw material for Panzhihua Iron and Steel's sintering production. Compared with Panzhihua vanadium-titanium magnetite concentrate, Baima mine has the characteristics of high iron, high vanadium, low silicon, and fine particle size. Using Baima vanadium-titanium magnetite concentrate to replace the same proportion of Panzhihua vanadium-titanium magnetite concentrate can extract iron and increase vanadium. The economic and social benefits are huge. Therefore, it is of great strategic significance to use Baima vanadium-titanium magnetite concentrat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16
Inventor 甘勤饶家庭龙永伟何木光刘龙全
Owner PANGANG GROUP RESEARCH INSTITUTE CO LTD
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