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Sintering method for improving vanadium-titanium sinter output and quality

A technology of vanadium-titanium sinter and sintering method, applied in the field of iron making, can solve the problem of less application, and achieve the effects of improving the strength of the drum, the yield of finished products, and the performance of low-temperature reduction and pulverization

Active Publication Date: 2021-05-07
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] At present, the methods for improving the quality of vanadium-titanium sintered ore have their shortcomings, and they are rarely used in the actual production process.

Method used

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  • Sintering method for improving vanadium-titanium sinter output and quality

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The iron-containing raw material of vanadium-titanium sinter is 100% vanadium-titanium magnetite.

[0033] In the high alkalinity mixture: the solvent is a mixture of unslaked lime, limestone and dolomite, its mass ratio is 14:5:10, the proportion of coke powder is 3.8wt% of the high alkalinity mixture, and the control alkalinity is 2.50. The water content of the granules is 7.0%, which is used as a high-alkalinity mixture after mixing and granulating in a cylinder mixer;

[0034] Low-alkalinity mixture: the solvent is quicklime, the proportion of coke powder is 3.8wt% of the low-alkalinity mixture, the alkalinity is controlled to 1.50, and the granulation water is 7.0%. Alkalinity mix.

[0035] First lay a 30mm base material, then spread the low-alkalinity mixture, the height of the fabric is 350mm, and then spread the high-alkalinity mixture on the top of the low-alkalinity mixture, the fabric height is 350mm, and the height of the two layers is 700mm , the comprehe...

Embodiment 2

[0037] Under the situation that other conditions are identical with embodiment 1, the high-basicity mixture is first carried out cloth, then the low-basicity mixture is distributed above the high-basicity mixture, the yield of obtained sintered ore, drum strength, Utilization coefficient, solid burnup and low-temperature reducing pulverization index RDI +3.15 Respectively 68.86%, 57.33%, 1.71t / (m 2 h), 57.73Kg / t 烧结矿 and 54.81%.

Embodiment 3

[0039]Under the situation that other conditions are identical with embodiment 1, earlier high alkalinity mixture is carried out cloth, cloth height is 490mm, then low alkalinity mixture is clothed on high alkalinity mixture top, cloth height is 210mm, comprehensive alkali degree of 2.2, the obtained sinter yield, drum strength, utilization coefficient, solid fuel consumption and low temperature reduction pulverization index RDI +3.15 Respectively 69.68%, 57.93%, 1.75t / (m 2 h), 56.92Kg / t 烧结矿 and 60.09%.

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Abstract

The invention discloses a sintering method for improving the vanadium-titanium sinter output and quality. The method comprises the following steps of preparing a vanadium-titanium sinter raw material into a high-alkalinity mixture and a low-alkalinity mixture, and sequentially distributing two sintering mixtures with different kinds of alkalinity on a sintering trolley, so that sintering materials are of a double-layer mixture layer structure with two kinds of alkalinity, and finally, carrying out primary ignition sintering, crushing and cooling to obtain vanadium-titanium sinter. The method can effectively solve the problems that a vanadium-titanium sinter product is low in yield, poor in strength and particularly poor in low-temperature reduction degradation performance, meanwhile, the heat storage effect of a material layer can be fully utilized, sintering energy consumption is remarkably reduced, and pollutant emission is reduced.

Description

technical field [0001] The invention belongs to the technical field of ironmaking, and relates to a sintering method for improving the quality of vanadium-titanium sintered ore. Background technique [0002] Vanadium-titanium magnetite is an important strategic resource, and its rich reserves of iron, titanium and vanadium have a decisive position in my country and the world. The treatment of vanadium-titanium magnetite by blast furnace method is a relatively mature process. The industrial resources such as vanadium and titanium in my country are mainly extracted by blast furnace method. Vanadium-titanium magnetite is sintered to prepare artificial lump ore, and then smelted in blast furnace to separate valuable resources such as iron, titanium and vanadium. Due to the unique properties of vanadium-titanium magnetite, the sintered ore produced has problems such as poor low-temperature reduction pulverization performance, low yield, and poor drum strength. In particular, th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16
CPCC22B1/16
Inventor 钟强姜涛李光辉徐良平彭志伟饶明军张鑫郭宇峰杨永斌李骞刘会波程德
Owner CENT SOUTH UNIV
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