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Preparing method for vanadium-titanium magnetite oxidation pellet for vertical furnace

A technology of vanadium-titanium magnetite and oxidation pellets, which is applied in the field of metallurgy and can solve problems such as the difficulty of pelletizing all-vanadium-titanium-iron concentrate

Active Publication Date: 2017-06-30
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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  • Abstract
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  • Application Information

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Problems solved by technology

For this reason, an object of the present invention is to propose a kind of preparation method of vanadium-titanium-magnetite oxidized pellets for shaft furnaces, adopting this method can effectively solve the difficult problem of single all-vanadium-titanium-iron concentrate pelletizing difficulty, reduce the Manufacturing cost, improve the quality of the pellets, the shaft furnace uses the vanadium-titanium ore pellets to produce smooth furnace conditions, low energy consumption, and the economic and technical indicators can be further improved

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  • Preparing method for vanadium-titanium magnetite oxidation pellet for vertical furnace
  • Preparing method for vanadium-titanium magnetite oxidation pellet for vertical furnace
  • Preparing method for vanadium-titanium magnetite oxidation pellet for vertical furnace

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[0029] According to one aspect of the present invention, the present invention proposes the preparation method of vanadium-titanium-magnetite oxidation pellets for shaft furnaces, according to an embodiment of the present invention, the method comprises:

[0030] Mixing vanadium-titanium-magnetite concentrate powder and bentonite to obtain a first mixed material;

[0031] mixing a part of the first mixed material with sodium carbonate and water to obtain a second mixed material;

[0032] subjecting the second mixed material to a first pelletizing treatment, so as to obtain cue balls;

[0033] mixing another part of the first mixed material with water to obtain a pelletized material;

[0034] Mixing the cue ball with the pelletizing material and performing a second pelletizing treatment, so that the pelletizing material wraps the cue ball, so as to obtain vanadium-titanium magnetite pellets; and

[0035] The vanadium-titanium-magnetite pellets are dried and oxidized and roast...

Embodiment 1

[0076] 1. Get 10Kg of vanadium-titanium magnetite concentrate powder, analyze its composition and particle size, the results are shown in Table 1 and Table 2, and the water content is 0.

[0077] The main component / wt% of table 1 vanadium-titanium magnetite concentrate powder

[0078] TF FeO V 2 o 5

TiO 2

SiO 2

CaO MgO Al 2 o 3

S P 57.22 27.5 0.498 7.77 1.57 1.01 1.00 2.09 0.049 0.058

[0079] The particle size distribution of table 2 vanadium-titanium magnetite concentrate powder

[0080] Grain fraction / mm +0.15 -0.15-+0.10 -0.10-+0.074 -0.074-+0.045 -0.074 -0.045 Content / weight% 0.8 2.4 17.6 48.7 79.2 30.5

[0081] Take 0.12Kg of bentonite (the addition amount is 1.2% by weight of the mass of vanadium-titanium magnetite), and its main components are shown in Table 3.

[0082] Table 3 Main components / wt% of bentonite

[0083]

[0084] 2. Carry out dry mixing with vanadium-titan...

Embodiment 2

[0093] 1. Get 10Kg of vanadium-titanium magnetite concentrate powder, analyze its composition and particle size, the results are shown in Table 5 and Table 6, and the water content is 0.

[0094] Main component / wt% of table 5 vanadium-titanium magnetite concentrate powder

[0095] TF FeO V 2 o 5

TiO 2

SiO 2

CaO MgO Al 2 o 3

S P 67.29 27.5 0.546 1.47 1.57 0.66 0.51 0.83 0.001 0.006

[0096] The particle size distribution of table 6 vanadium-titanium magnetite concentrate powder

[0097] Grain fraction / mm +0.15 -0.15～+0.10 -0.10～+0.074 -0.074-+0.045 -0.074 -0.045 Content / weight% 2.04 4.28 3.35 42.00 90.33 48.33

[0098] Take 0.12Kg of bentonite (the addition amount is 1.2% by weight of the mass of vanadium-titanium magnetite), and its main components are shown in Table 7.

[0099] Table 7 Main Components / % by Weight of Bentonite

[0100]

[0101] 2. Carry out dry mixing with vanad...

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Abstract

The invention discloses a preparing method for a vanadium-titanium magnetite oxidation pellet for a vertical furnace. The preparing method includes the steps that vanadium-titanium magnetite concentrate powder and bentonite are mixed, so that a first mixed material is obtained; part of the first mixed material is mixed with sodium carbonate and water, so that a second mixed material is obtained; the second mixed material is subjected to first pelletizing treatment, so that a mother bulb is obtained; the other part of the first mixed material is mixed with water, so that a pelletized material is obtained; the mother bulb and the pelletized material are mixed and subjected to second pelletizing treatment, the mother bulb is wrapped by the pelletized material, and a vanadium-titanium magnetite pellet is obtained; and the vanadium-titanium magnetite pellet is subjected to drying and oxidizing roasting, so that the vanadium-titanium magnetite oxidation pellet for the vertical furnace is obtained. By the adoption of the method, the problem that direct reduction of a vanadium-titanium magnetite pellet gas base for the single full-vanadium-titanium iron concentrate preparing vertical furnace is difficult can be solved, in addition, the production cost is effectively reduced, and a guarantee is provided for economical running of the vertical furnace.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a preparation method of vanadium-titanium-magnetite oxidation pellets for a shaft furnace. Background technique [0002] Vanadium-titanium magnetite is a mineral that mainly contains iron, titanium and vanadium, accompanied by a small amount of chromium, nickel, cobalt, platinum group, scandium and other comprehensively utilizable components, and has extremely high utilization value. The grade of titanium slag obtained by using the existing mineral processing method and the traditional "sintering-blast furnace smelting-converter vanadium extraction-semi-steel making" smelting process is low, and it is difficult to achieve high efficiency of valuable components such as iron, vanadium and titanium. The gas-based shaft furnace direct reduction process for the treatment of vanadium-titanium ore has the advantages of short process, high resource utilization rate, low po...

Claims

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Application Information

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IPC IPC(8): C22B1/243C22B1/02C21B13/02
CPCC21B13/02C22B1/02C22B1/2406C22B1/243
Inventor 唐敬坤邓君冯鲁兴韩志彪薛逊曹志成吴道洪
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST
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