Preparation method of vanadium-titanium magnetite oxide pellets for shaft furnace

A technology of vanadium titanomagnetite and oxidizing pellets is applied in the field of metallurgy and can solve the problems of difficulty in pelletizing all-vanadium ilmenite concentrates and the like

Active Publication Date: 2018-08-28
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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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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  • Preparation method of vanadium-titanium magnetite oxide pellets for shaft furnace
  • Preparation method of vanadium-titanium magnetite oxide pellets for shaft furnace
  • Preparation method of vanadium-titanium magnetite oxide pellets for shaft furnace

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preparation example Construction

[0029] According to one aspect of the present invention, the present invention proposes a preparation method of vanadium titanomagnetite oxidized pellets for shaft furnace. According to an embodiment of the present invention, the method includes:

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

[0031] mixing a portion of the first mixture with sodium carbonate and water to obtain a second mixture;

[0032] subjecting the second mixed material to a first pelletizing process to obtain a cue ball;

[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 process, so that the pelletizing material wraps the cue ball, so as to obtain vanadium titanomagnetite pellets; and

[0035] The vanadium titanomagnetite pellets are dried and oxidatively roasted to obtain vanadium titanomagnetite o...

Embodiment 1

[0076] 1. Take 10Kg of vanadium titanomagnetite 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] Table 1 Main components / wt% of vanadium titanomagnetite concentrate powder

[0078] TFe

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] Table 2 Particle size distribution of vanadium titanomagnetite concentrate powder

[0080] Grain size / 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 amount added is 1.2% by weight of the mass of vanadium titanomagnetite), and its main components are shown in Table 3.

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

[0083] ...

Embodiment 2

[0093] 1. Take 10Kg of vanadium titanomagnetite 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] Table 5 Main components / wt% of vanadium titanomagnetite concentrate powder

[0095] TFe

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] Table 6 Particle size distribution of vanadium titanomagnetite concentrate powder

[0097] Grain size / 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 amount added is 1.2% by weight of the mass of vanadium titanomagnetite), and its main components are shown in Table 7.

[0099] Table 7 Main components / wt% of bentonite

[01...

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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, in particular, the invention relates to a preparation method of vanadium titanomagnetite oxidized pellets for shaft furnaces. Background technique [0002] Vanadium titanomagnetite is a mineral mainly containing iron, titanium and vanadium with a small amount of chromium, nickel, cobalt, platinum group, scandium and other components that can be comprehensively utilized, and has extremely high utilization value. The titanium slag obtained by using the existing mineral processing methods and the traditional "sintering-blast furnace smelting-converter vanadium extraction-semi-steel-making" smelting process flow is low in grade, 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 vanadium-titanium ore has the advantages of short process flow, high resource utilization rate, low pollutio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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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