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Method for preparing full-vanadium-titanium pellets

A technology of pelletizing and vanadium-titanium, which is applied in the field of preparing all-vanadium-titanium pellets, can solve problems such as methods to be studied, and achieve the effects of large porosity, compressive strength, and shortening of pelletizing time.

Active Publication Date: 2017-01-25
JIANGSU PROVINCE METALLURGICAL DESIGN INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But at the same time, the direct reduction of vanadium-titanium ore in a shaft furnace puts forward higher requirements on the compressive strength, pulverization rate, and porosity of the all-vanadium-titanium pellets. Therefore, the method for preparing all-vanadium-titanium pellets for the shaft furnace remains to be Research

Method used

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  • Method for preparing full-vanadium-titanium pellets
  • Method for preparing full-vanadium-titanium pellets

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Chengde vanadium-titanium magnetite and bentonite are used as raw materials to prepare all-vanadium-titanium pellets. Among them, the water content of Chengde vanadium-titanium magnetite is 1.3%, and the main components and particle size distribution are as follows:

[0050] The main components of Chengde vanadium-titanium magnetite are:

[0051] 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

[0052] The particle size distribution of Chengde vanadium-titanium magnetite is:

[0053] Grain fraction / mm +0.15 -0.15～+0.10 -0.10～+0.074 -0.074～+0.045 -0.074 -0.045 content / % 0.8 2.4 17.6 48.7 79.2 30.5

[0054] The main components of bentonite:

[0055]

[0056] Utilize above-mentioned raw material to prepare the method for pellet as follows:

[0057] (1) Add 2% by mass of bentonite to Chengde vanadium-titanium magnetite.

...

Embodiment 2

[0066] Using Kazakhstan vanadium-titanium magnetite and bentonite as raw materials to prepare all-vanadium-titanium pellets, wherein the water content of Kazakhstan vanadium-titanium magnetite is 1.0%, and the main components and particle size distribution are as follows:

[0067] Main components of vanadium-titanium magnetite in Kazakhstan

[0068] 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

[0069] Particle Size Distribution of Vanadium-Titanium Magnetite in Kazakhstan

[0070] Grain fraction / mm +0.15 -0.15～+0.10 -0.10～+0.074 -0.074～+0.045 -0.074 -0.045 content / % 2.04 4.28 3.35 42.00 90.33 48.33

[0071] The main components of bentonite:

[0072]

[0073] (1) Add 0.8% by mass of bentonite to Kazakhstan vanadium-titanium magnetite.

[0074] (2) Dry blend the materials obtained in step (1). After the materials are evenly...

Embodiment 3

[0082] Using Mozambique vanadium-titanium magnetite and bentonite as raw materials, all-vanadium-titanium pellets are prepared. Among them, the water content of Mozambique vanadium-titanium magnetite is 0.8%, and the main components and particle size distribution are as follows:

[0083] The main components of vanadium-titanium magnetite in Mozambique are:

[0084] TF FeO V 2 o 5

TiO 2

SiO 2

CaO MgO Al 2 o 3

S P MnO Cr 2 o 3

54.16 9.91 0.815 16.16 1.69 0.36 0.86 3.25 0.01 0.01 0.26 0.24

[0085] Mozambique vanadium-titanium magnetite particle size distribution is:

[0086]

[0087] The main components of bentonite:

[0088]

[0089] Utilize above-mentioned raw material to prepare the method for pellet as follows:

[0090] (1) Mozambique vanadium-titanium magnetite was added with 2% by mass of bentonite.

[0091] (2) Dry blend the materials obtained in step (1). After the materials are evenly mi...

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Abstract

The invention discloses a method for preparing full-vanadium-titanium pellets. The method comprises the steps: carrying out wet grinding and drying treatment on vanadium titano-magnetite powder, so as to obtain dried vanadium titano-magnetite powder; carrying out dry mixing treatment on the dried vanadium titano-magnetite powder and a binder, so as to obtain a dry-mixed material; carrying out first wet-mixing treatment on one part of the dry-mixed material, so as to obtain a first wet-mixed material; carrying out second wet-mixing treatment on the other part of the dry-mixed material, so as to obtain a second wet-mixed material, wherein the moisture content of the second wet-mixed material is higher than that of the first wet-mixed material; carrying out first pelletizing treatment by using the first wet-mixed material, so as to obtain parent nuclei; carrying out second pelletizing treatment by using the parent nuclei and the second wet-mixed material, so as to obtain pellets; carrying out screening treatment on the pellets, so as to obtain screened pellets; carrying out drying treatment on the screened pellets, so as to obtain dried pellets; carrying out oxidizing roasting treatment on the dried pellets, thereby obtaining the full-vanadium-titanium pellets.

Description

technical field [0001] The invention relates to a method for preparing all-vanadium-titanium pellets. 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. recycling. The gas-based shaft furnace direct reduction process for vanadium-titanium ore has the advantages of short process, high resource utilization rate, low pollution, and high-quality products, and has certain technical advantages in the comprehensive utilization ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/02C22B1/24C22B1/243
CPCC22B1/02C22B1/2406C22B1/243
Inventor 唐敬坤邓君冯鲁兴薛逊吴道洪
Owner JIANGSU PROVINCE METALLURGICAL DESIGN INST
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